forked from OSchip/llvm-project
7569 lines
288 KiB
C++
7569 lines
288 KiB
C++
//===-- RewriteModernObjC.cpp - Playground for the code rewriter ----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Hacks and fun related to the code rewriter.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Rewrite/Frontend/ASTConsumers.h"
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#include "clang/AST/AST.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/Attr.h"
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#include "clang/AST/ParentMap.h"
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#include "clang/Basic/CharInfo.h"
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Config/config.h"
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#include "clang/Lex/Lexer.h"
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#include "clang/Rewrite/Core/Rewriter.h"
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#include "llvm/ADT/DenseSet.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/raw_ostream.h"
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#include <memory>
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#if CLANG_ENABLE_OBJC_REWRITER
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using namespace clang;
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using llvm::utostr;
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namespace {
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class RewriteModernObjC : public ASTConsumer {
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protected:
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enum {
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BLOCK_FIELD_IS_OBJECT = 3, /* id, NSObject, __attribute__((NSObject)),
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block, ... */
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BLOCK_FIELD_IS_BLOCK = 7, /* a block variable */
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BLOCK_FIELD_IS_BYREF = 8, /* the on stack structure holding the
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__block variable */
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BLOCK_FIELD_IS_WEAK = 16, /* declared __weak, only used in byref copy
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helpers */
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BLOCK_BYREF_CALLER = 128, /* called from __block (byref) copy/dispose
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support routines */
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BLOCK_BYREF_CURRENT_MAX = 256
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};
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enum {
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BLOCK_NEEDS_FREE = (1 << 24),
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BLOCK_HAS_COPY_DISPOSE = (1 << 25),
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BLOCK_HAS_CXX_OBJ = (1 << 26),
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BLOCK_IS_GC = (1 << 27),
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BLOCK_IS_GLOBAL = (1 << 28),
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BLOCK_HAS_DESCRIPTOR = (1 << 29)
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};
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Rewriter Rewrite;
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DiagnosticsEngine &Diags;
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const LangOptions &LangOpts;
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ASTContext *Context;
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SourceManager *SM;
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TranslationUnitDecl *TUDecl;
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FileID MainFileID;
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const char *MainFileStart, *MainFileEnd;
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Stmt *CurrentBody;
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ParentMap *PropParentMap; // created lazily.
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std::string InFileName;
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std::unique_ptr<raw_ostream> OutFile;
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std::string Preamble;
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TypeDecl *ProtocolTypeDecl;
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VarDecl *GlobalVarDecl;
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Expr *GlobalConstructionExp;
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unsigned RewriteFailedDiag;
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unsigned GlobalBlockRewriteFailedDiag;
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// ObjC string constant support.
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unsigned NumObjCStringLiterals;
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VarDecl *ConstantStringClassReference;
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RecordDecl *NSStringRecord;
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// ObjC foreach break/continue generation support.
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int BcLabelCount;
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unsigned TryFinallyContainsReturnDiag;
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// Needed for super.
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ObjCMethodDecl *CurMethodDef;
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RecordDecl *SuperStructDecl;
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RecordDecl *ConstantStringDecl;
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FunctionDecl *MsgSendFunctionDecl;
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FunctionDecl *MsgSendSuperFunctionDecl;
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FunctionDecl *MsgSendStretFunctionDecl;
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FunctionDecl *MsgSendSuperStretFunctionDecl;
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FunctionDecl *MsgSendFpretFunctionDecl;
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FunctionDecl *GetClassFunctionDecl;
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FunctionDecl *GetMetaClassFunctionDecl;
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FunctionDecl *GetSuperClassFunctionDecl;
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FunctionDecl *SelGetUidFunctionDecl;
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FunctionDecl *CFStringFunctionDecl;
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FunctionDecl *SuperConstructorFunctionDecl;
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FunctionDecl *CurFunctionDef;
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/* Misc. containers needed for meta-data rewrite. */
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SmallVector<ObjCImplementationDecl *, 8> ClassImplementation;
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SmallVector<ObjCCategoryImplDecl *, 8> CategoryImplementation;
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llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCSynthesizedStructs;
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llvm::SmallPtrSet<ObjCProtocolDecl*, 8> ObjCSynthesizedProtocols;
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llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCWrittenInterfaces;
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llvm::SmallPtrSet<TagDecl*, 32> GlobalDefinedTags;
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SmallVector<ObjCInterfaceDecl*, 32> ObjCInterfacesSeen;
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/// DefinedNonLazyClasses - List of defined "non-lazy" classes.
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SmallVector<ObjCInterfaceDecl*, 8> DefinedNonLazyClasses;
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/// DefinedNonLazyCategories - List of defined "non-lazy" categories.
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SmallVector<ObjCCategoryDecl *, 8> DefinedNonLazyCategories;
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SmallVector<Stmt *, 32> Stmts;
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SmallVector<int, 8> ObjCBcLabelNo;
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// Remember all the @protocol(<expr>) expressions.
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llvm::SmallPtrSet<ObjCProtocolDecl *, 32> ProtocolExprDecls;
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llvm::DenseSet<uint64_t> CopyDestroyCache;
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// Block expressions.
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SmallVector<BlockExpr *, 32> Blocks;
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SmallVector<int, 32> InnerDeclRefsCount;
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SmallVector<DeclRefExpr *, 32> InnerDeclRefs;
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SmallVector<DeclRefExpr *, 32> BlockDeclRefs;
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// Block related declarations.
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SmallVector<ValueDecl *, 8> BlockByCopyDecls;
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llvm::SmallPtrSet<ValueDecl *, 8> BlockByCopyDeclsPtrSet;
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SmallVector<ValueDecl *, 8> BlockByRefDecls;
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llvm::SmallPtrSet<ValueDecl *, 8> BlockByRefDeclsPtrSet;
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llvm::DenseMap<ValueDecl *, unsigned> BlockByRefDeclNo;
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llvm::SmallPtrSet<ValueDecl *, 8> ImportedBlockDecls;
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llvm::SmallPtrSet<VarDecl *, 8> ImportedLocalExternalDecls;
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llvm::DenseMap<BlockExpr *, std::string> RewrittenBlockExprs;
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llvm::DenseMap<ObjCInterfaceDecl *,
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llvm::SmallSetVector<ObjCIvarDecl *, 8> > ReferencedIvars;
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// ivar bitfield grouping containers
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llvm::DenseSet<const ObjCInterfaceDecl *> ObjCInterefaceHasBitfieldGroups;
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llvm::DenseMap<const ObjCIvarDecl* , unsigned> IvarGroupNumber;
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// This container maps an <class, group number for ivar> tuple to the type
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// of the struct where the bitfield belongs.
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llvm::DenseMap<std::pair<const ObjCInterfaceDecl*, unsigned>, QualType> GroupRecordType;
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SmallVector<FunctionDecl*, 32> FunctionDefinitionsSeen;
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// This maps an original source AST to it's rewritten form. This allows
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// us to avoid rewriting the same node twice (which is very uncommon).
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// This is needed to support some of the exotic property rewriting.
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llvm::DenseMap<Stmt *, Stmt *> ReplacedNodes;
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// Needed for header files being rewritten
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bool IsHeader;
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bool SilenceRewriteMacroWarning;
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bool GenerateLineInfo;
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bool objc_impl_method;
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bool DisableReplaceStmt;
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class DisableReplaceStmtScope {
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RewriteModernObjC &R;
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bool SavedValue;
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public:
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DisableReplaceStmtScope(RewriteModernObjC &R)
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: R(R), SavedValue(R.DisableReplaceStmt) {
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R.DisableReplaceStmt = true;
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}
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~DisableReplaceStmtScope() {
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R.DisableReplaceStmt = SavedValue;
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}
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};
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void InitializeCommon(ASTContext &context);
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public:
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llvm::DenseMap<ObjCMethodDecl*, std::string> MethodInternalNames;
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// Top Level Driver code.
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bool HandleTopLevelDecl(DeclGroupRef D) override {
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for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
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if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(*I)) {
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if (!Class->isThisDeclarationADefinition()) {
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RewriteForwardClassDecl(D);
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break;
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} else {
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// Keep track of all interface declarations seen.
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ObjCInterfacesSeen.push_back(Class);
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break;
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}
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}
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if (ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(*I)) {
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if (!Proto->isThisDeclarationADefinition()) {
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RewriteForwardProtocolDecl(D);
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break;
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}
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}
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if (FunctionDecl *FDecl = dyn_cast<FunctionDecl>(*I)) {
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// Under modern abi, we cannot translate body of the function
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// yet until all class extensions and its implementation is seen.
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// This is because they may introduce new bitfields which must go
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// into their grouping struct.
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if (FDecl->isThisDeclarationADefinition() &&
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// Not c functions defined inside an objc container.
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!FDecl->isTopLevelDeclInObjCContainer()) {
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FunctionDefinitionsSeen.push_back(FDecl);
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break;
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}
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}
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HandleTopLevelSingleDecl(*I);
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}
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return true;
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}
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void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) override {
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for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
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if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(*I)) {
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if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
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RewriteBlockPointerDecl(TD);
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else if (TD->getUnderlyingType()->isFunctionPointerType())
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CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
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else
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RewriteObjCQualifiedInterfaceTypes(TD);
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}
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}
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}
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void HandleTopLevelSingleDecl(Decl *D);
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void HandleDeclInMainFile(Decl *D);
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RewriteModernObjC(std::string inFile, std::unique_ptr<raw_ostream> OS,
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DiagnosticsEngine &D, const LangOptions &LOpts,
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bool silenceMacroWarn, bool LineInfo);
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~RewriteModernObjC() override {}
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void HandleTranslationUnit(ASTContext &C) override;
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void ReplaceStmt(Stmt *Old, Stmt *New) {
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ReplaceStmtWithRange(Old, New, Old->getSourceRange());
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}
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void ReplaceStmtWithRange(Stmt *Old, Stmt *New, SourceRange SrcRange) {
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assert(Old != nullptr && New != nullptr && "Expected non-null Stmt's");
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Stmt *ReplacingStmt = ReplacedNodes[Old];
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if (ReplacingStmt)
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return; // We can't rewrite the same node twice.
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if (DisableReplaceStmt)
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return;
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// Measure the old text.
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int Size = Rewrite.getRangeSize(SrcRange);
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if (Size == -1) {
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Diags.Report(Context->getFullLoc(Old->getBeginLoc()), RewriteFailedDiag)
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<< Old->getSourceRange();
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return;
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}
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// Get the new text.
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std::string SStr;
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llvm::raw_string_ostream S(SStr);
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New->printPretty(S, nullptr, PrintingPolicy(LangOpts));
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const std::string &Str = S.str();
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// If replacement succeeded or warning disabled return with no warning.
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if (!Rewrite.ReplaceText(SrcRange.getBegin(), Size, Str)) {
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ReplacedNodes[Old] = New;
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return;
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}
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if (SilenceRewriteMacroWarning)
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return;
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Diags.Report(Context->getFullLoc(Old->getBeginLoc()), RewriteFailedDiag)
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<< Old->getSourceRange();
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}
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void InsertText(SourceLocation Loc, StringRef Str,
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bool InsertAfter = true) {
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// If insertion succeeded or warning disabled return with no warning.
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if (!Rewrite.InsertText(Loc, Str, InsertAfter) ||
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SilenceRewriteMacroWarning)
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return;
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Diags.Report(Context->getFullLoc(Loc), RewriteFailedDiag);
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}
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void ReplaceText(SourceLocation Start, unsigned OrigLength,
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StringRef Str) {
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// If removal succeeded or warning disabled return with no warning.
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if (!Rewrite.ReplaceText(Start, OrigLength, Str) ||
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SilenceRewriteMacroWarning)
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return;
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Diags.Report(Context->getFullLoc(Start), RewriteFailedDiag);
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}
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// Syntactic Rewriting.
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void RewriteRecordBody(RecordDecl *RD);
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void RewriteInclude();
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void RewriteLineDirective(const Decl *D);
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void ConvertSourceLocationToLineDirective(SourceLocation Loc,
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std::string &LineString);
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void RewriteForwardClassDecl(DeclGroupRef D);
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void RewriteForwardClassDecl(const SmallVectorImpl<Decl *> &DG);
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void RewriteForwardClassEpilogue(ObjCInterfaceDecl *ClassDecl,
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const std::string &typedefString);
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void RewriteImplementations();
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void RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
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ObjCImplementationDecl *IMD,
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ObjCCategoryImplDecl *CID);
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void RewriteInterfaceDecl(ObjCInterfaceDecl *Dcl);
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void RewriteImplementationDecl(Decl *Dcl);
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void RewriteObjCMethodDecl(const ObjCInterfaceDecl *IDecl,
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ObjCMethodDecl *MDecl, std::string &ResultStr);
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void RewriteTypeIntoString(QualType T, std::string &ResultStr,
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const FunctionType *&FPRetType);
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void RewriteByRefString(std::string &ResultStr, const std::string &Name,
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ValueDecl *VD, bool def=false);
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void RewriteCategoryDecl(ObjCCategoryDecl *Dcl);
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void RewriteProtocolDecl(ObjCProtocolDecl *Dcl);
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void RewriteForwardProtocolDecl(DeclGroupRef D);
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void RewriteForwardProtocolDecl(const SmallVectorImpl<Decl *> &DG);
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void RewriteMethodDeclaration(ObjCMethodDecl *Method);
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void RewriteProperty(ObjCPropertyDecl *prop);
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void RewriteFunctionDecl(FunctionDecl *FD);
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void RewriteBlockPointerType(std::string& Str, QualType Type);
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void RewriteBlockPointerTypeVariable(std::string& Str, ValueDecl *VD);
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void RewriteBlockLiteralFunctionDecl(FunctionDecl *FD);
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void RewriteObjCQualifiedInterfaceTypes(Decl *Dcl);
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void RewriteTypeOfDecl(VarDecl *VD);
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void RewriteObjCQualifiedInterfaceTypes(Expr *E);
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std::string getIvarAccessString(ObjCIvarDecl *D);
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// Expression Rewriting.
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Stmt *RewriteFunctionBodyOrGlobalInitializer(Stmt *S);
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Stmt *RewriteAtEncode(ObjCEncodeExpr *Exp);
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Stmt *RewritePropertyOrImplicitGetter(PseudoObjectExpr *Pseudo);
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Stmt *RewritePropertyOrImplicitSetter(PseudoObjectExpr *Pseudo);
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Stmt *RewriteAtSelector(ObjCSelectorExpr *Exp);
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Stmt *RewriteMessageExpr(ObjCMessageExpr *Exp);
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Stmt *RewriteObjCStringLiteral(ObjCStringLiteral *Exp);
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Stmt *RewriteObjCBoolLiteralExpr(ObjCBoolLiteralExpr *Exp);
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Stmt *RewriteObjCBoxedExpr(ObjCBoxedExpr *Exp);
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Stmt *RewriteObjCArrayLiteralExpr(ObjCArrayLiteral *Exp);
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Stmt *RewriteObjCDictionaryLiteralExpr(ObjCDictionaryLiteral *Exp);
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Stmt *RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp);
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Stmt *RewriteObjCTryStmt(ObjCAtTryStmt *S);
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Stmt *RewriteObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S);
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Stmt *RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S);
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Stmt *RewriteObjCThrowStmt(ObjCAtThrowStmt *S);
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Stmt *RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
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SourceLocation OrigEnd);
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Stmt *RewriteBreakStmt(BreakStmt *S);
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Stmt *RewriteContinueStmt(ContinueStmt *S);
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void RewriteCastExpr(CStyleCastExpr *CE);
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void RewriteImplicitCastObjCExpr(CastExpr *IE);
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// Computes ivar bitfield group no.
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unsigned ObjCIvarBitfieldGroupNo(ObjCIvarDecl *IV);
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// Names field decl. for ivar bitfield group.
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void ObjCIvarBitfieldGroupDecl(ObjCIvarDecl *IV, std::string &Result);
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// Names struct type for ivar bitfield group.
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void ObjCIvarBitfieldGroupType(ObjCIvarDecl *IV, std::string &Result);
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// Names symbol for ivar bitfield group field offset.
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void ObjCIvarBitfieldGroupOffset(ObjCIvarDecl *IV, std::string &Result);
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// Given an ivar bitfield, it builds (or finds) its group record type.
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QualType GetGroupRecordTypeForObjCIvarBitfield(ObjCIvarDecl *IV);
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QualType SynthesizeBitfieldGroupStructType(
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ObjCIvarDecl *IV,
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SmallVectorImpl<ObjCIvarDecl *> &IVars);
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// Block rewriting.
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void RewriteBlocksInFunctionProtoType(QualType funcType, NamedDecl *D);
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// Block specific rewrite rules.
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void RewriteBlockPointerDecl(NamedDecl *VD);
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void RewriteByRefVar(VarDecl *VD, bool firstDecl, bool lastDecl);
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Stmt *RewriteBlockDeclRefExpr(DeclRefExpr *VD);
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Stmt *RewriteLocalVariableExternalStorage(DeclRefExpr *DRE);
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void RewriteBlockPointerFunctionArgs(FunctionDecl *FD);
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void RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl,
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std::string &Result);
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void RewriteObjCFieldDecl(FieldDecl *fieldDecl, std::string &Result);
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bool IsTagDefinedInsideClass(ObjCContainerDecl *IDecl, TagDecl *Tag,
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bool &IsNamedDefinition);
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void RewriteLocallyDefinedNamedAggregates(FieldDecl *fieldDecl,
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std::string &Result);
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bool RewriteObjCFieldDeclType(QualType &Type, std::string &Result);
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void RewriteIvarOffsetSymbols(ObjCInterfaceDecl *CDecl,
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std::string &Result);
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void Initialize(ASTContext &context) override;
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// Misc. AST transformation routines. Sometimes they end up calling
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// rewriting routines on the new ASTs.
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CallExpr *SynthesizeCallToFunctionDecl(FunctionDecl *FD,
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ArrayRef<Expr *> Args,
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SourceLocation StartLoc=SourceLocation(),
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SourceLocation EndLoc=SourceLocation());
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Expr *SynthMsgSendStretCallExpr(FunctionDecl *MsgSendStretFlavor,
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QualType returnType,
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SmallVectorImpl<QualType> &ArgTypes,
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SmallVectorImpl<Expr*> &MsgExprs,
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ObjCMethodDecl *Method);
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Stmt *SynthMessageExpr(ObjCMessageExpr *Exp,
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SourceLocation StartLoc=SourceLocation(),
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SourceLocation EndLoc=SourceLocation());
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void SynthCountByEnumWithState(std::string &buf);
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void SynthMsgSendFunctionDecl();
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void SynthMsgSendSuperFunctionDecl();
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void SynthMsgSendStretFunctionDecl();
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void SynthMsgSendFpretFunctionDecl();
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void SynthMsgSendSuperStretFunctionDecl();
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void SynthGetClassFunctionDecl();
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void SynthGetMetaClassFunctionDecl();
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void SynthGetSuperClassFunctionDecl();
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void SynthSelGetUidFunctionDecl();
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void SynthSuperConstructorFunctionDecl();
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// Rewriting metadata
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template<typename MethodIterator>
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void RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
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MethodIterator MethodEnd,
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bool IsInstanceMethod,
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StringRef prefix,
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StringRef ClassName,
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std::string &Result);
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void RewriteObjCProtocolMetaData(ObjCProtocolDecl *Protocol,
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std::string &Result);
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void RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
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std::string &Result);
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void RewriteClassSetupInitHook(std::string &Result);
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void RewriteMetaDataIntoBuffer(std::string &Result);
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void WriteImageInfo(std::string &Result);
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void RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *CDecl,
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std::string &Result);
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void RewriteCategorySetupInitHook(std::string &Result);
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// Rewriting ivar
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void RewriteIvarOffsetComputation(ObjCIvarDecl *ivar,
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std::string &Result);
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Stmt *RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV);
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std::string SynthesizeByrefCopyDestroyHelper(VarDecl *VD, int flag);
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|
std::string SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
|
|
StringRef funcName, std::string Tag);
|
|
std::string SynthesizeBlockFunc(BlockExpr *CE, int i,
|
|
StringRef funcName, std::string Tag);
|
|
std::string SynthesizeBlockImpl(BlockExpr *CE,
|
|
std::string Tag, std::string Desc);
|
|
std::string SynthesizeBlockDescriptor(std::string DescTag,
|
|
std::string ImplTag,
|
|
int i, StringRef funcName,
|
|
unsigned hasCopy);
|
|
Stmt *SynthesizeBlockCall(CallExpr *Exp, const Expr* BlockExp);
|
|
void SynthesizeBlockLiterals(SourceLocation FunLocStart,
|
|
StringRef FunName);
|
|
FunctionDecl *SynthBlockInitFunctionDecl(StringRef name);
|
|
Stmt *SynthBlockInitExpr(BlockExpr *Exp,
|
|
const SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs);
|
|
|
|
// Misc. helper routines.
|
|
QualType getProtocolType();
|
|
void WarnAboutReturnGotoStmts(Stmt *S);
|
|
void CheckFunctionPointerDecl(QualType dType, NamedDecl *ND);
|
|
void InsertBlockLiteralsWithinFunction(FunctionDecl *FD);
|
|
void InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD);
|
|
|
|
bool IsDeclStmtInForeachHeader(DeclStmt *DS);
|
|
void CollectBlockDeclRefInfo(BlockExpr *Exp);
|
|
void GetBlockDeclRefExprs(Stmt *S);
|
|
void GetInnerBlockDeclRefExprs(Stmt *S,
|
|
SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs,
|
|
llvm::SmallPtrSetImpl<const DeclContext *> &InnerContexts);
|
|
|
|
// We avoid calling Type::isBlockPointerType(), since it operates on the
|
|
// canonical type. We only care if the top-level type is a closure pointer.
|
|
bool isTopLevelBlockPointerType(QualType T) {
|
|
return isa<BlockPointerType>(T);
|
|
}
|
|
|
|
/// convertBlockPointerToFunctionPointer - Converts a block-pointer type
|
|
/// to a function pointer type and upon success, returns true; false
|
|
/// otherwise.
|
|
bool convertBlockPointerToFunctionPointer(QualType &T) {
|
|
if (isTopLevelBlockPointerType(T)) {
|
|
const BlockPointerType *BPT = T->getAs<BlockPointerType>();
|
|
T = Context->getPointerType(BPT->getPointeeType());
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool convertObjCTypeToCStyleType(QualType &T);
|
|
|
|
bool needToScanForQualifiers(QualType T);
|
|
QualType getSuperStructType();
|
|
QualType getConstantStringStructType();
|
|
QualType convertFunctionTypeOfBlocks(const FunctionType *FT);
|
|
|
|
void convertToUnqualifiedObjCType(QualType &T) {
|
|
if (T->isObjCQualifiedIdType()) {
|
|
bool isConst = T.isConstQualified();
|
|
T = isConst ? Context->getObjCIdType().withConst()
|
|
: Context->getObjCIdType();
|
|
}
|
|
else if (T->isObjCQualifiedClassType())
|
|
T = Context->getObjCClassType();
|
|
else if (T->isObjCObjectPointerType() &&
|
|
T->getPointeeType()->isObjCQualifiedInterfaceType()) {
|
|
if (const ObjCObjectPointerType * OBJPT =
|
|
T->getAsObjCInterfacePointerType()) {
|
|
const ObjCInterfaceType *IFaceT = OBJPT->getInterfaceType();
|
|
T = QualType(IFaceT, 0);
|
|
T = Context->getPointerType(T);
|
|
}
|
|
}
|
|
}
|
|
|
|
// FIXME: This predicate seems like it would be useful to add to ASTContext.
|
|
bool isObjCType(QualType T) {
|
|
if (!LangOpts.ObjC)
|
|
return false;
|
|
|
|
QualType OCT = Context->getCanonicalType(T).getUnqualifiedType();
|
|
|
|
if (OCT == Context->getCanonicalType(Context->getObjCIdType()) ||
|
|
OCT == Context->getCanonicalType(Context->getObjCClassType()))
|
|
return true;
|
|
|
|
if (const PointerType *PT = OCT->getAs<PointerType>()) {
|
|
if (isa<ObjCInterfaceType>(PT->getPointeeType()) ||
|
|
PT->getPointeeType()->isObjCQualifiedIdType())
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool PointerTypeTakesAnyBlockArguments(QualType QT);
|
|
bool PointerTypeTakesAnyObjCQualifiedType(QualType QT);
|
|
void GetExtentOfArgList(const char *Name, const char *&LParen,
|
|
const char *&RParen);
|
|
|
|
void QuoteDoublequotes(std::string &From, std::string &To) {
|
|
for (unsigned i = 0; i < From.length(); i++) {
|
|
if (From[i] == '"')
|
|
To += "\\\"";
|
|
else
|
|
To += From[i];
|
|
}
|
|
}
|
|
|
|
QualType getSimpleFunctionType(QualType result,
|
|
ArrayRef<QualType> args,
|
|
bool variadic = false) {
|
|
if (result == Context->getObjCInstanceType())
|
|
result = Context->getObjCIdType();
|
|
FunctionProtoType::ExtProtoInfo fpi;
|
|
fpi.Variadic = variadic;
|
|
return Context->getFunctionType(result, args, fpi);
|
|
}
|
|
|
|
// Helper function: create a CStyleCastExpr with trivial type source info.
|
|
CStyleCastExpr* NoTypeInfoCStyleCastExpr(ASTContext *Ctx, QualType Ty,
|
|
CastKind Kind, Expr *E) {
|
|
TypeSourceInfo *TInfo = Ctx->getTrivialTypeSourceInfo(Ty, SourceLocation());
|
|
return CStyleCastExpr::Create(*Ctx, Ty, VK_RValue, Kind, E, nullptr,
|
|
TInfo, SourceLocation(), SourceLocation());
|
|
}
|
|
|
|
bool ImplementationIsNonLazy(const ObjCImplDecl *OD) const {
|
|
IdentifierInfo* II = &Context->Idents.get("load");
|
|
Selector LoadSel = Context->Selectors.getSelector(0, &II);
|
|
return OD->getClassMethod(LoadSel) != nullptr;
|
|
}
|
|
|
|
StringLiteral *getStringLiteral(StringRef Str) {
|
|
QualType StrType = Context->getConstantArrayType(
|
|
Context->CharTy, llvm::APInt(32, Str.size() + 1), ArrayType::Normal,
|
|
0);
|
|
return StringLiteral::Create(*Context, Str, StringLiteral::Ascii,
|
|
/*Pascal=*/false, StrType, SourceLocation());
|
|
}
|
|
};
|
|
} // end anonymous namespace
|
|
|
|
void RewriteModernObjC::RewriteBlocksInFunctionProtoType(QualType funcType,
|
|
NamedDecl *D) {
|
|
if (const FunctionProtoType *fproto
|
|
= dyn_cast<FunctionProtoType>(funcType.IgnoreParens())) {
|
|
for (const auto &I : fproto->param_types())
|
|
if (isTopLevelBlockPointerType(I)) {
|
|
// All the args are checked/rewritten. Don't call twice!
|
|
RewriteBlockPointerDecl(D);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::CheckFunctionPointerDecl(QualType funcType, NamedDecl *ND) {
|
|
const PointerType *PT = funcType->getAs<PointerType>();
|
|
if (PT && PointerTypeTakesAnyBlockArguments(funcType))
|
|
RewriteBlocksInFunctionProtoType(PT->getPointeeType(), ND);
|
|
}
|
|
|
|
static bool IsHeaderFile(const std::string &Filename) {
|
|
std::string::size_type DotPos = Filename.rfind('.');
|
|
|
|
if (DotPos == std::string::npos) {
|
|
// no file extension
|
|
return false;
|
|
}
|
|
|
|
std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end());
|
|
// C header: .h
|
|
// C++ header: .hh or .H;
|
|
return Ext == "h" || Ext == "hh" || Ext == "H";
|
|
}
|
|
|
|
RewriteModernObjC::RewriteModernObjC(std::string inFile,
|
|
std::unique_ptr<raw_ostream> OS,
|
|
DiagnosticsEngine &D,
|
|
const LangOptions &LOpts,
|
|
bool silenceMacroWarn, bool LineInfo)
|
|
: Diags(D), LangOpts(LOpts), InFileName(inFile), OutFile(std::move(OS)),
|
|
SilenceRewriteMacroWarning(silenceMacroWarn), GenerateLineInfo(LineInfo) {
|
|
IsHeader = IsHeaderFile(inFile);
|
|
RewriteFailedDiag = Diags.getCustomDiagID(DiagnosticsEngine::Warning,
|
|
"rewriting sub-expression within a macro (may not be correct)");
|
|
// FIXME. This should be an error. But if block is not called, it is OK. And it
|
|
// may break including some headers.
|
|
GlobalBlockRewriteFailedDiag = Diags.getCustomDiagID(DiagnosticsEngine::Warning,
|
|
"rewriting block literal declared in global scope is not implemented");
|
|
|
|
TryFinallyContainsReturnDiag = Diags.getCustomDiagID(
|
|
DiagnosticsEngine::Warning,
|
|
"rewriter doesn't support user-specified control flow semantics "
|
|
"for @try/@finally (code may not execute properly)");
|
|
}
|
|
|
|
std::unique_ptr<ASTConsumer> clang::CreateModernObjCRewriter(
|
|
const std::string &InFile, std::unique_ptr<raw_ostream> OS,
|
|
DiagnosticsEngine &Diags, const LangOptions &LOpts,
|
|
bool SilenceRewriteMacroWarning, bool LineInfo) {
|
|
return std::make_unique<RewriteModernObjC>(InFile, std::move(OS), Diags,
|
|
LOpts, SilenceRewriteMacroWarning,
|
|
LineInfo);
|
|
}
|
|
|
|
void RewriteModernObjC::InitializeCommon(ASTContext &context) {
|
|
Context = &context;
|
|
SM = &Context->getSourceManager();
|
|
TUDecl = Context->getTranslationUnitDecl();
|
|
MsgSendFunctionDecl = nullptr;
|
|
MsgSendSuperFunctionDecl = nullptr;
|
|
MsgSendStretFunctionDecl = nullptr;
|
|
MsgSendSuperStretFunctionDecl = nullptr;
|
|
MsgSendFpretFunctionDecl = nullptr;
|
|
GetClassFunctionDecl = nullptr;
|
|
GetMetaClassFunctionDecl = nullptr;
|
|
GetSuperClassFunctionDecl = nullptr;
|
|
SelGetUidFunctionDecl = nullptr;
|
|
CFStringFunctionDecl = nullptr;
|
|
ConstantStringClassReference = nullptr;
|
|
NSStringRecord = nullptr;
|
|
CurMethodDef = nullptr;
|
|
CurFunctionDef = nullptr;
|
|
GlobalVarDecl = nullptr;
|
|
GlobalConstructionExp = nullptr;
|
|
SuperStructDecl = nullptr;
|
|
ProtocolTypeDecl = nullptr;
|
|
ConstantStringDecl = nullptr;
|
|
BcLabelCount = 0;
|
|
SuperConstructorFunctionDecl = nullptr;
|
|
NumObjCStringLiterals = 0;
|
|
PropParentMap = nullptr;
|
|
CurrentBody = nullptr;
|
|
DisableReplaceStmt = false;
|
|
objc_impl_method = false;
|
|
|
|
// Get the ID and start/end of the main file.
|
|
MainFileID = SM->getMainFileID();
|
|
const llvm::MemoryBuffer *MainBuf = SM->getBuffer(MainFileID);
|
|
MainFileStart = MainBuf->getBufferStart();
|
|
MainFileEnd = MainBuf->getBufferEnd();
|
|
|
|
Rewrite.setSourceMgr(Context->getSourceManager(), Context->getLangOpts());
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Top Level Driver Code
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void RewriteModernObjC::HandleTopLevelSingleDecl(Decl *D) {
|
|
if (Diags.hasErrorOccurred())
|
|
return;
|
|
|
|
// Two cases: either the decl could be in the main file, or it could be in a
|
|
// #included file. If the former, rewrite it now. If the later, check to see
|
|
// if we rewrote the #include/#import.
|
|
SourceLocation Loc = D->getLocation();
|
|
Loc = SM->getExpansionLoc(Loc);
|
|
|
|
// If this is for a builtin, ignore it.
|
|
if (Loc.isInvalid()) return;
|
|
|
|
// Look for built-in declarations that we need to refer during the rewrite.
|
|
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
|
|
RewriteFunctionDecl(FD);
|
|
} else if (VarDecl *FVD = dyn_cast<VarDecl>(D)) {
|
|
// declared in <Foundation/NSString.h>
|
|
if (FVD->getName() == "_NSConstantStringClassReference") {
|
|
ConstantStringClassReference = FVD;
|
|
return;
|
|
}
|
|
} else if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(D)) {
|
|
RewriteCategoryDecl(CD);
|
|
} else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
|
|
if (PD->isThisDeclarationADefinition())
|
|
RewriteProtocolDecl(PD);
|
|
} else if (LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(D)) {
|
|
// Recurse into linkage specifications
|
|
for (DeclContext::decl_iterator DI = LSD->decls_begin(),
|
|
DIEnd = LSD->decls_end();
|
|
DI != DIEnd; ) {
|
|
if (ObjCInterfaceDecl *IFace = dyn_cast<ObjCInterfaceDecl>((*DI))) {
|
|
if (!IFace->isThisDeclarationADefinition()) {
|
|
SmallVector<Decl *, 8> DG;
|
|
SourceLocation StartLoc = IFace->getBeginLoc();
|
|
do {
|
|
if (isa<ObjCInterfaceDecl>(*DI) &&
|
|
!cast<ObjCInterfaceDecl>(*DI)->isThisDeclarationADefinition() &&
|
|
StartLoc == (*DI)->getBeginLoc())
|
|
DG.push_back(*DI);
|
|
else
|
|
break;
|
|
|
|
++DI;
|
|
} while (DI != DIEnd);
|
|
RewriteForwardClassDecl(DG);
|
|
continue;
|
|
}
|
|
else {
|
|
// Keep track of all interface declarations seen.
|
|
ObjCInterfacesSeen.push_back(IFace);
|
|
++DI;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>((*DI))) {
|
|
if (!Proto->isThisDeclarationADefinition()) {
|
|
SmallVector<Decl *, 8> DG;
|
|
SourceLocation StartLoc = Proto->getBeginLoc();
|
|
do {
|
|
if (isa<ObjCProtocolDecl>(*DI) &&
|
|
!cast<ObjCProtocolDecl>(*DI)->isThisDeclarationADefinition() &&
|
|
StartLoc == (*DI)->getBeginLoc())
|
|
DG.push_back(*DI);
|
|
else
|
|
break;
|
|
|
|
++DI;
|
|
} while (DI != DIEnd);
|
|
RewriteForwardProtocolDecl(DG);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
HandleTopLevelSingleDecl(*DI);
|
|
++DI;
|
|
}
|
|
}
|
|
// If we have a decl in the main file, see if we should rewrite it.
|
|
if (SM->isWrittenInMainFile(Loc))
|
|
return HandleDeclInMainFile(D);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Syntactic (non-AST) Rewriting Code
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void RewriteModernObjC::RewriteInclude() {
|
|
SourceLocation LocStart = SM->getLocForStartOfFile(MainFileID);
|
|
StringRef MainBuf = SM->getBufferData(MainFileID);
|
|
const char *MainBufStart = MainBuf.begin();
|
|
const char *MainBufEnd = MainBuf.end();
|
|
size_t ImportLen = strlen("import");
|
|
|
|
// Loop over the whole file, looking for includes.
|
|
for (const char *BufPtr = MainBufStart; BufPtr < MainBufEnd; ++BufPtr) {
|
|
if (*BufPtr == '#') {
|
|
if (++BufPtr == MainBufEnd)
|
|
return;
|
|
while (*BufPtr == ' ' || *BufPtr == '\t')
|
|
if (++BufPtr == MainBufEnd)
|
|
return;
|
|
if (!strncmp(BufPtr, "import", ImportLen)) {
|
|
// replace import with include
|
|
SourceLocation ImportLoc =
|
|
LocStart.getLocWithOffset(BufPtr-MainBufStart);
|
|
ReplaceText(ImportLoc, ImportLen, "include");
|
|
BufPtr += ImportLen;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void WriteInternalIvarName(const ObjCInterfaceDecl *IDecl,
|
|
ObjCIvarDecl *IvarDecl, std::string &Result) {
|
|
Result += "OBJC_IVAR_$_";
|
|
Result += IDecl->getName();
|
|
Result += "$";
|
|
Result += IvarDecl->getName();
|
|
}
|
|
|
|
std::string
|
|
RewriteModernObjC::getIvarAccessString(ObjCIvarDecl *D) {
|
|
const ObjCInterfaceDecl *ClassDecl = D->getContainingInterface();
|
|
|
|
// Build name of symbol holding ivar offset.
|
|
std::string IvarOffsetName;
|
|
if (D->isBitField())
|
|
ObjCIvarBitfieldGroupOffset(D, IvarOffsetName);
|
|
else
|
|
WriteInternalIvarName(ClassDecl, D, IvarOffsetName);
|
|
|
|
std::string S = "(*(";
|
|
QualType IvarT = D->getType();
|
|
if (D->isBitField())
|
|
IvarT = GetGroupRecordTypeForObjCIvarBitfield(D);
|
|
|
|
if (!isa<TypedefType>(IvarT) && IvarT->isRecordType()) {
|
|
RecordDecl *RD = IvarT->getAs<RecordType>()->getDecl();
|
|
RD = RD->getDefinition();
|
|
if (RD && !RD->getDeclName().getAsIdentifierInfo()) {
|
|
// decltype(((Foo_IMPL*)0)->bar) *
|
|
ObjCContainerDecl *CDecl =
|
|
dyn_cast<ObjCContainerDecl>(D->getDeclContext());
|
|
// ivar in class extensions requires special treatment.
|
|
if (ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(CDecl))
|
|
CDecl = CatDecl->getClassInterface();
|
|
std::string RecName = CDecl->getName();
|
|
RecName += "_IMPL";
|
|
RecordDecl *RD =
|
|
RecordDecl::Create(*Context, TTK_Struct, TUDecl, SourceLocation(),
|
|
SourceLocation(), &Context->Idents.get(RecName));
|
|
QualType PtrStructIMPL = Context->getPointerType(Context->getTagDeclType(RD));
|
|
unsigned UnsignedIntSize =
|
|
static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
|
|
Expr *Zero = IntegerLiteral::Create(*Context,
|
|
llvm::APInt(UnsignedIntSize, 0),
|
|
Context->UnsignedIntTy, SourceLocation());
|
|
Zero = NoTypeInfoCStyleCastExpr(Context, PtrStructIMPL, CK_BitCast, Zero);
|
|
ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
|
|
Zero);
|
|
FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
|
|
SourceLocation(),
|
|
&Context->Idents.get(D->getNameAsString()),
|
|
IvarT, nullptr,
|
|
/*BitWidth=*/nullptr, /*Mutable=*/true,
|
|
ICIS_NoInit);
|
|
MemberExpr *ME = MemberExpr::CreateImplicit(
|
|
*Context, PE, true, FD, FD->getType(), VK_LValue, OK_Ordinary);
|
|
IvarT = Context->getDecltypeType(ME, ME->getType());
|
|
}
|
|
}
|
|
convertObjCTypeToCStyleType(IvarT);
|
|
QualType castT = Context->getPointerType(IvarT);
|
|
std::string TypeString(castT.getAsString(Context->getPrintingPolicy()));
|
|
S += TypeString;
|
|
S += ")";
|
|
|
|
// ((char *)self + IVAR_OFFSET_SYMBOL_NAME)
|
|
S += "((char *)self + ";
|
|
S += IvarOffsetName;
|
|
S += "))";
|
|
if (D->isBitField()) {
|
|
S += ".";
|
|
S += D->getNameAsString();
|
|
}
|
|
ReferencedIvars[const_cast<ObjCInterfaceDecl *>(ClassDecl)].insert(D);
|
|
return S;
|
|
}
|
|
|
|
/// mustSynthesizeSetterGetterMethod - returns true if setter or getter has not
|
|
/// been found in the class implementation. In this case, it must be synthesized.
|
|
static bool mustSynthesizeSetterGetterMethod(ObjCImplementationDecl *IMP,
|
|
ObjCPropertyDecl *PD,
|
|
bool getter) {
|
|
return getter ? !IMP->getInstanceMethod(PD->getGetterName())
|
|
: !IMP->getInstanceMethod(PD->getSetterName());
|
|
|
|
}
|
|
|
|
void RewriteModernObjC::RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
|
|
ObjCImplementationDecl *IMD,
|
|
ObjCCategoryImplDecl *CID) {
|
|
static bool objcGetPropertyDefined = false;
|
|
static bool objcSetPropertyDefined = false;
|
|
SourceLocation startGetterSetterLoc;
|
|
|
|
if (PID->getBeginLoc().isValid()) {
|
|
SourceLocation startLoc = PID->getBeginLoc();
|
|
InsertText(startLoc, "// ");
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
assert((*startBuf == '@') && "bogus @synthesize location");
|
|
const char *semiBuf = strchr(startBuf, ';');
|
|
assert((*semiBuf == ';') && "@synthesize: can't find ';'");
|
|
startGetterSetterLoc = startLoc.getLocWithOffset(semiBuf-startBuf+1);
|
|
} else
|
|
startGetterSetterLoc = IMD ? IMD->getEndLoc() : CID->getEndLoc();
|
|
|
|
if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
|
|
return; // FIXME: is this correct?
|
|
|
|
// Generate the 'getter' function.
|
|
ObjCPropertyDecl *PD = PID->getPropertyDecl();
|
|
ObjCIvarDecl *OID = PID->getPropertyIvarDecl();
|
|
assert(IMD && OID && "Synthesized ivars must be attached to @implementation");
|
|
|
|
unsigned Attributes = PD->getPropertyAttributes();
|
|
if (mustSynthesizeSetterGetterMethod(IMD, PD, true /*getter*/)) {
|
|
bool GenGetProperty = !(Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic) &&
|
|
(Attributes & (ObjCPropertyDecl::OBJC_PR_retain |
|
|
ObjCPropertyDecl::OBJC_PR_copy));
|
|
std::string Getr;
|
|
if (GenGetProperty && !objcGetPropertyDefined) {
|
|
objcGetPropertyDefined = true;
|
|
// FIXME. Is this attribute correct in all cases?
|
|
Getr = "\nextern \"C\" __declspec(dllimport) "
|
|
"id objc_getProperty(id, SEL, long, bool);\n";
|
|
}
|
|
RewriteObjCMethodDecl(OID->getContainingInterface(),
|
|
PD->getGetterMethodDecl(), Getr);
|
|
Getr += "{ ";
|
|
// Synthesize an explicit cast to gain access to the ivar.
|
|
// See objc-act.c:objc_synthesize_new_getter() for details.
|
|
if (GenGetProperty) {
|
|
// return objc_getProperty(self, _cmd, offsetof(ClassDecl, OID), 1)
|
|
Getr += "typedef ";
|
|
const FunctionType *FPRetType = nullptr;
|
|
RewriteTypeIntoString(PD->getGetterMethodDecl()->getReturnType(), Getr,
|
|
FPRetType);
|
|
Getr += " _TYPE";
|
|
if (FPRetType) {
|
|
Getr += ")"; // close the precedence "scope" for "*".
|
|
|
|
// Now, emit the argument types (if any).
|
|
if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)){
|
|
Getr += "(";
|
|
for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
|
|
if (i) Getr += ", ";
|
|
std::string ParamStr =
|
|
FT->getParamType(i).getAsString(Context->getPrintingPolicy());
|
|
Getr += ParamStr;
|
|
}
|
|
if (FT->isVariadic()) {
|
|
if (FT->getNumParams())
|
|
Getr += ", ";
|
|
Getr += "...";
|
|
}
|
|
Getr += ")";
|
|
} else
|
|
Getr += "()";
|
|
}
|
|
Getr += ";\n";
|
|
Getr += "return (_TYPE)";
|
|
Getr += "objc_getProperty(self, _cmd, ";
|
|
RewriteIvarOffsetComputation(OID, Getr);
|
|
Getr += ", 1)";
|
|
}
|
|
else
|
|
Getr += "return " + getIvarAccessString(OID);
|
|
Getr += "; }";
|
|
InsertText(startGetterSetterLoc, Getr);
|
|
}
|
|
|
|
if (PD->isReadOnly() ||
|
|
!mustSynthesizeSetterGetterMethod(IMD, PD, false /*setter*/))
|
|
return;
|
|
|
|
// Generate the 'setter' function.
|
|
std::string Setr;
|
|
bool GenSetProperty = Attributes & (ObjCPropertyDecl::OBJC_PR_retain |
|
|
ObjCPropertyDecl::OBJC_PR_copy);
|
|
if (GenSetProperty && !objcSetPropertyDefined) {
|
|
objcSetPropertyDefined = true;
|
|
// FIXME. Is this attribute correct in all cases?
|
|
Setr = "\nextern \"C\" __declspec(dllimport) "
|
|
"void objc_setProperty (id, SEL, long, id, bool, bool);\n";
|
|
}
|
|
|
|
RewriteObjCMethodDecl(OID->getContainingInterface(),
|
|
PD->getSetterMethodDecl(), Setr);
|
|
Setr += "{ ";
|
|
// Synthesize an explicit cast to initialize the ivar.
|
|
// See objc-act.c:objc_synthesize_new_setter() for details.
|
|
if (GenSetProperty) {
|
|
Setr += "objc_setProperty (self, _cmd, ";
|
|
RewriteIvarOffsetComputation(OID, Setr);
|
|
Setr += ", (id)";
|
|
Setr += PD->getName();
|
|
Setr += ", ";
|
|
if (Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic)
|
|
Setr += "0, ";
|
|
else
|
|
Setr += "1, ";
|
|
if (Attributes & ObjCPropertyDecl::OBJC_PR_copy)
|
|
Setr += "1)";
|
|
else
|
|
Setr += "0)";
|
|
}
|
|
else {
|
|
Setr += getIvarAccessString(OID) + " = ";
|
|
Setr += PD->getName();
|
|
}
|
|
Setr += "; }\n";
|
|
InsertText(startGetterSetterLoc, Setr);
|
|
}
|
|
|
|
static void RewriteOneForwardClassDecl(ObjCInterfaceDecl *ForwardDecl,
|
|
std::string &typedefString) {
|
|
typedefString += "\n#ifndef _REWRITER_typedef_";
|
|
typedefString += ForwardDecl->getNameAsString();
|
|
typedefString += "\n";
|
|
typedefString += "#define _REWRITER_typedef_";
|
|
typedefString += ForwardDecl->getNameAsString();
|
|
typedefString += "\n";
|
|
typedefString += "typedef struct objc_object ";
|
|
typedefString += ForwardDecl->getNameAsString();
|
|
// typedef struct { } _objc_exc_Classname;
|
|
typedefString += ";\ntypedef struct {} _objc_exc_";
|
|
typedefString += ForwardDecl->getNameAsString();
|
|
typedefString += ";\n#endif\n";
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteForwardClassEpilogue(ObjCInterfaceDecl *ClassDecl,
|
|
const std::string &typedefString) {
|
|
SourceLocation startLoc = ClassDecl->getBeginLoc();
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
const char *semiPtr = strchr(startBuf, ';');
|
|
// Replace the @class with typedefs corresponding to the classes.
|
|
ReplaceText(startLoc, semiPtr-startBuf+1, typedefString);
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteForwardClassDecl(DeclGroupRef D) {
|
|
std::string typedefString;
|
|
for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
|
|
if (ObjCInterfaceDecl *ForwardDecl = dyn_cast<ObjCInterfaceDecl>(*I)) {
|
|
if (I == D.begin()) {
|
|
// Translate to typedef's that forward reference structs with the same name
|
|
// as the class. As a convenience, we include the original declaration
|
|
// as a comment.
|
|
typedefString += "// @class ";
|
|
typedefString += ForwardDecl->getNameAsString();
|
|
typedefString += ";";
|
|
}
|
|
RewriteOneForwardClassDecl(ForwardDecl, typedefString);
|
|
}
|
|
else
|
|
HandleTopLevelSingleDecl(*I);
|
|
}
|
|
DeclGroupRef::iterator I = D.begin();
|
|
RewriteForwardClassEpilogue(cast<ObjCInterfaceDecl>(*I), typedefString);
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteForwardClassDecl(
|
|
const SmallVectorImpl<Decl *> &D) {
|
|
std::string typedefString;
|
|
for (unsigned i = 0; i < D.size(); i++) {
|
|
ObjCInterfaceDecl *ForwardDecl = cast<ObjCInterfaceDecl>(D[i]);
|
|
if (i == 0) {
|
|
typedefString += "// @class ";
|
|
typedefString += ForwardDecl->getNameAsString();
|
|
typedefString += ";";
|
|
}
|
|
RewriteOneForwardClassDecl(ForwardDecl, typedefString);
|
|
}
|
|
RewriteForwardClassEpilogue(cast<ObjCInterfaceDecl>(D[0]), typedefString);
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteMethodDeclaration(ObjCMethodDecl *Method) {
|
|
// When method is a synthesized one, such as a getter/setter there is
|
|
// nothing to rewrite.
|
|
if (Method->isImplicit())
|
|
return;
|
|
SourceLocation LocStart = Method->getBeginLoc();
|
|
SourceLocation LocEnd = Method->getEndLoc();
|
|
|
|
if (SM->getExpansionLineNumber(LocEnd) >
|
|
SM->getExpansionLineNumber(LocStart)) {
|
|
InsertText(LocStart, "#if 0\n");
|
|
ReplaceText(LocEnd, 1, ";\n#endif\n");
|
|
} else {
|
|
InsertText(LocStart, "// ");
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteProperty(ObjCPropertyDecl *prop) {
|
|
SourceLocation Loc = prop->getAtLoc();
|
|
|
|
ReplaceText(Loc, 0, "// ");
|
|
// FIXME: handle properties that are declared across multiple lines.
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteCategoryDecl(ObjCCategoryDecl *CatDecl) {
|
|
SourceLocation LocStart = CatDecl->getBeginLoc();
|
|
|
|
// FIXME: handle category headers that are declared across multiple lines.
|
|
if (CatDecl->getIvarRBraceLoc().isValid()) {
|
|
ReplaceText(LocStart, 1, "/** ");
|
|
ReplaceText(CatDecl->getIvarRBraceLoc(), 1, "**/ ");
|
|
}
|
|
else {
|
|
ReplaceText(LocStart, 0, "// ");
|
|
}
|
|
|
|
for (auto *I : CatDecl->instance_properties())
|
|
RewriteProperty(I);
|
|
|
|
for (auto *I : CatDecl->instance_methods())
|
|
RewriteMethodDeclaration(I);
|
|
for (auto *I : CatDecl->class_methods())
|
|
RewriteMethodDeclaration(I);
|
|
|
|
// Lastly, comment out the @end.
|
|
ReplaceText(CatDecl->getAtEndRange().getBegin(),
|
|
strlen("@end"), "/* @end */\n");
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteProtocolDecl(ObjCProtocolDecl *PDecl) {
|
|
SourceLocation LocStart = PDecl->getBeginLoc();
|
|
assert(PDecl->isThisDeclarationADefinition());
|
|
|
|
// FIXME: handle protocol headers that are declared across multiple lines.
|
|
ReplaceText(LocStart, 0, "// ");
|
|
|
|
for (auto *I : PDecl->instance_methods())
|
|
RewriteMethodDeclaration(I);
|
|
for (auto *I : PDecl->class_methods())
|
|
RewriteMethodDeclaration(I);
|
|
for (auto *I : PDecl->instance_properties())
|
|
RewriteProperty(I);
|
|
|
|
// Lastly, comment out the @end.
|
|
SourceLocation LocEnd = PDecl->getAtEndRange().getBegin();
|
|
ReplaceText(LocEnd, strlen("@end"), "/* @end */\n");
|
|
|
|
// Must comment out @optional/@required
|
|
const char *startBuf = SM->getCharacterData(LocStart);
|
|
const char *endBuf = SM->getCharacterData(LocEnd);
|
|
for (const char *p = startBuf; p < endBuf; p++) {
|
|
if (*p == '@' && !strncmp(p+1, "optional", strlen("optional"))) {
|
|
SourceLocation OptionalLoc = LocStart.getLocWithOffset(p-startBuf);
|
|
ReplaceText(OptionalLoc, strlen("@optional"), "/* @optional */");
|
|
|
|
}
|
|
else if (*p == '@' && !strncmp(p+1, "required", strlen("required"))) {
|
|
SourceLocation OptionalLoc = LocStart.getLocWithOffset(p-startBuf);
|
|
ReplaceText(OptionalLoc, strlen("@required"), "/* @required */");
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteForwardProtocolDecl(DeclGroupRef D) {
|
|
SourceLocation LocStart = (*D.begin())->getBeginLoc();
|
|
if (LocStart.isInvalid())
|
|
llvm_unreachable("Invalid SourceLocation");
|
|
// FIXME: handle forward protocol that are declared across multiple lines.
|
|
ReplaceText(LocStart, 0, "// ");
|
|
}
|
|
|
|
void
|
|
RewriteModernObjC::RewriteForwardProtocolDecl(const SmallVectorImpl<Decl *> &DG) {
|
|
SourceLocation LocStart = DG[0]->getBeginLoc();
|
|
if (LocStart.isInvalid())
|
|
llvm_unreachable("Invalid SourceLocation");
|
|
// FIXME: handle forward protocol that are declared across multiple lines.
|
|
ReplaceText(LocStart, 0, "// ");
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteTypeIntoString(QualType T, std::string &ResultStr,
|
|
const FunctionType *&FPRetType) {
|
|
if (T->isObjCQualifiedIdType())
|
|
ResultStr += "id";
|
|
else if (T->isFunctionPointerType() ||
|
|
T->isBlockPointerType()) {
|
|
// needs special handling, since pointer-to-functions have special
|
|
// syntax (where a decaration models use).
|
|
QualType retType = T;
|
|
QualType PointeeTy;
|
|
if (const PointerType* PT = retType->getAs<PointerType>())
|
|
PointeeTy = PT->getPointeeType();
|
|
else if (const BlockPointerType *BPT = retType->getAs<BlockPointerType>())
|
|
PointeeTy = BPT->getPointeeType();
|
|
if ((FPRetType = PointeeTy->getAs<FunctionType>())) {
|
|
ResultStr +=
|
|
FPRetType->getReturnType().getAsString(Context->getPrintingPolicy());
|
|
ResultStr += "(*";
|
|
}
|
|
} else
|
|
ResultStr += T.getAsString(Context->getPrintingPolicy());
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteObjCMethodDecl(const ObjCInterfaceDecl *IDecl,
|
|
ObjCMethodDecl *OMD,
|
|
std::string &ResultStr) {
|
|
//fprintf(stderr,"In RewriteObjCMethodDecl\n");
|
|
const FunctionType *FPRetType = nullptr;
|
|
ResultStr += "\nstatic ";
|
|
RewriteTypeIntoString(OMD->getReturnType(), ResultStr, FPRetType);
|
|
ResultStr += " ";
|
|
|
|
// Unique method name
|
|
std::string NameStr;
|
|
|
|
if (OMD->isInstanceMethod())
|
|
NameStr += "_I_";
|
|
else
|
|
NameStr += "_C_";
|
|
|
|
NameStr += IDecl->getNameAsString();
|
|
NameStr += "_";
|
|
|
|
if (ObjCCategoryImplDecl *CID =
|
|
dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext())) {
|
|
NameStr += CID->getNameAsString();
|
|
NameStr += "_";
|
|
}
|
|
// Append selector names, replacing ':' with '_'
|
|
{
|
|
std::string selString = OMD->getSelector().getAsString();
|
|
int len = selString.size();
|
|
for (int i = 0; i < len; i++)
|
|
if (selString[i] == ':')
|
|
selString[i] = '_';
|
|
NameStr += selString;
|
|
}
|
|
// Remember this name for metadata emission
|
|
MethodInternalNames[OMD] = NameStr;
|
|
ResultStr += NameStr;
|
|
|
|
// Rewrite arguments
|
|
ResultStr += "(";
|
|
|
|
// invisible arguments
|
|
if (OMD->isInstanceMethod()) {
|
|
QualType selfTy = Context->getObjCInterfaceType(IDecl);
|
|
selfTy = Context->getPointerType(selfTy);
|
|
if (!LangOpts.MicrosoftExt) {
|
|
if (ObjCSynthesizedStructs.count(const_cast<ObjCInterfaceDecl*>(IDecl)))
|
|
ResultStr += "struct ";
|
|
}
|
|
// When rewriting for Microsoft, explicitly omit the structure name.
|
|
ResultStr += IDecl->getNameAsString();
|
|
ResultStr += " *";
|
|
}
|
|
else
|
|
ResultStr += Context->getObjCClassType().getAsString(
|
|
Context->getPrintingPolicy());
|
|
|
|
ResultStr += " self, ";
|
|
ResultStr += Context->getObjCSelType().getAsString(Context->getPrintingPolicy());
|
|
ResultStr += " _cmd";
|
|
|
|
// Method arguments.
|
|
for (const auto *PDecl : OMD->parameters()) {
|
|
ResultStr += ", ";
|
|
if (PDecl->getType()->isObjCQualifiedIdType()) {
|
|
ResultStr += "id ";
|
|
ResultStr += PDecl->getNameAsString();
|
|
} else {
|
|
std::string Name = PDecl->getNameAsString();
|
|
QualType QT = PDecl->getType();
|
|
// Make sure we convert "t (^)(...)" to "t (*)(...)".
|
|
(void)convertBlockPointerToFunctionPointer(QT);
|
|
QT.getAsStringInternal(Name, Context->getPrintingPolicy());
|
|
ResultStr += Name;
|
|
}
|
|
}
|
|
if (OMD->isVariadic())
|
|
ResultStr += ", ...";
|
|
ResultStr += ") ";
|
|
|
|
if (FPRetType) {
|
|
ResultStr += ")"; // close the precedence "scope" for "*".
|
|
|
|
// Now, emit the argument types (if any).
|
|
if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)) {
|
|
ResultStr += "(";
|
|
for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
|
|
if (i) ResultStr += ", ";
|
|
std::string ParamStr =
|
|
FT->getParamType(i).getAsString(Context->getPrintingPolicy());
|
|
ResultStr += ParamStr;
|
|
}
|
|
if (FT->isVariadic()) {
|
|
if (FT->getNumParams())
|
|
ResultStr += ", ";
|
|
ResultStr += "...";
|
|
}
|
|
ResultStr += ")";
|
|
} else {
|
|
ResultStr += "()";
|
|
}
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteImplementationDecl(Decl *OID) {
|
|
ObjCImplementationDecl *IMD = dyn_cast<ObjCImplementationDecl>(OID);
|
|
ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(OID);
|
|
|
|
if (IMD) {
|
|
if (IMD->getIvarRBraceLoc().isValid()) {
|
|
ReplaceText(IMD->getBeginLoc(), 1, "/** ");
|
|
ReplaceText(IMD->getIvarRBraceLoc(), 1, "**/ ");
|
|
}
|
|
else {
|
|
InsertText(IMD->getBeginLoc(), "// ");
|
|
}
|
|
}
|
|
else
|
|
InsertText(CID->getBeginLoc(), "// ");
|
|
|
|
for (auto *OMD : IMD ? IMD->instance_methods() : CID->instance_methods()) {
|
|
std::string ResultStr;
|
|
RewriteObjCMethodDecl(OMD->getClassInterface(), OMD, ResultStr);
|
|
SourceLocation LocStart = OMD->getBeginLoc();
|
|
SourceLocation LocEnd = OMD->getCompoundBody()->getBeginLoc();
|
|
|
|
const char *startBuf = SM->getCharacterData(LocStart);
|
|
const char *endBuf = SM->getCharacterData(LocEnd);
|
|
ReplaceText(LocStart, endBuf-startBuf, ResultStr);
|
|
}
|
|
|
|
for (auto *OMD : IMD ? IMD->class_methods() : CID->class_methods()) {
|
|
std::string ResultStr;
|
|
RewriteObjCMethodDecl(OMD->getClassInterface(), OMD, ResultStr);
|
|
SourceLocation LocStart = OMD->getBeginLoc();
|
|
SourceLocation LocEnd = OMD->getCompoundBody()->getBeginLoc();
|
|
|
|
const char *startBuf = SM->getCharacterData(LocStart);
|
|
const char *endBuf = SM->getCharacterData(LocEnd);
|
|
ReplaceText(LocStart, endBuf-startBuf, ResultStr);
|
|
}
|
|
for (auto *I : IMD ? IMD->property_impls() : CID->property_impls())
|
|
RewritePropertyImplDecl(I, IMD, CID);
|
|
|
|
InsertText(IMD ? IMD->getEndLoc() : CID->getEndLoc(), "// ");
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteInterfaceDecl(ObjCInterfaceDecl *ClassDecl) {
|
|
// Do not synthesize more than once.
|
|
if (ObjCSynthesizedStructs.count(ClassDecl))
|
|
return;
|
|
// Make sure super class's are written before current class is written.
|
|
ObjCInterfaceDecl *SuperClass = ClassDecl->getSuperClass();
|
|
while (SuperClass) {
|
|
RewriteInterfaceDecl(SuperClass);
|
|
SuperClass = SuperClass->getSuperClass();
|
|
}
|
|
std::string ResultStr;
|
|
if (!ObjCWrittenInterfaces.count(ClassDecl->getCanonicalDecl())) {
|
|
// we haven't seen a forward decl - generate a typedef.
|
|
RewriteOneForwardClassDecl(ClassDecl, ResultStr);
|
|
RewriteIvarOffsetSymbols(ClassDecl, ResultStr);
|
|
|
|
RewriteObjCInternalStruct(ClassDecl, ResultStr);
|
|
// Mark this typedef as having been written into its c++ equivalent.
|
|
ObjCWrittenInterfaces.insert(ClassDecl->getCanonicalDecl());
|
|
|
|
for (auto *I : ClassDecl->instance_properties())
|
|
RewriteProperty(I);
|
|
for (auto *I : ClassDecl->instance_methods())
|
|
RewriteMethodDeclaration(I);
|
|
for (auto *I : ClassDecl->class_methods())
|
|
RewriteMethodDeclaration(I);
|
|
|
|
// Lastly, comment out the @end.
|
|
ReplaceText(ClassDecl->getAtEndRange().getBegin(), strlen("@end"),
|
|
"/* @end */\n");
|
|
}
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewritePropertyOrImplicitSetter(PseudoObjectExpr *PseudoOp) {
|
|
SourceRange OldRange = PseudoOp->getSourceRange();
|
|
|
|
// We just magically know some things about the structure of this
|
|
// expression.
|
|
ObjCMessageExpr *OldMsg =
|
|
cast<ObjCMessageExpr>(PseudoOp->getSemanticExpr(
|
|
PseudoOp->getNumSemanticExprs() - 1));
|
|
|
|
// Because the rewriter doesn't allow us to rewrite rewritten code,
|
|
// we need to suppress rewriting the sub-statements.
|
|
Expr *Base;
|
|
SmallVector<Expr*, 2> Args;
|
|
{
|
|
DisableReplaceStmtScope S(*this);
|
|
|
|
// Rebuild the base expression if we have one.
|
|
Base = nullptr;
|
|
if (OldMsg->getReceiverKind() == ObjCMessageExpr::Instance) {
|
|
Base = OldMsg->getInstanceReceiver();
|
|
Base = cast<OpaqueValueExpr>(Base)->getSourceExpr();
|
|
Base = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Base));
|
|
}
|
|
|
|
unsigned numArgs = OldMsg->getNumArgs();
|
|
for (unsigned i = 0; i < numArgs; i++) {
|
|
Expr *Arg = OldMsg->getArg(i);
|
|
if (isa<OpaqueValueExpr>(Arg))
|
|
Arg = cast<OpaqueValueExpr>(Arg)->getSourceExpr();
|
|
Arg = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Arg));
|
|
Args.push_back(Arg);
|
|
}
|
|
}
|
|
|
|
// TODO: avoid this copy.
|
|
SmallVector<SourceLocation, 1> SelLocs;
|
|
OldMsg->getSelectorLocs(SelLocs);
|
|
|
|
ObjCMessageExpr *NewMsg = nullptr;
|
|
switch (OldMsg->getReceiverKind()) {
|
|
case ObjCMessageExpr::Class:
|
|
NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
|
|
OldMsg->getValueKind(),
|
|
OldMsg->getLeftLoc(),
|
|
OldMsg->getClassReceiverTypeInfo(),
|
|
OldMsg->getSelector(),
|
|
SelLocs,
|
|
OldMsg->getMethodDecl(),
|
|
Args,
|
|
OldMsg->getRightLoc(),
|
|
OldMsg->isImplicit());
|
|
break;
|
|
|
|
case ObjCMessageExpr::Instance:
|
|
NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
|
|
OldMsg->getValueKind(),
|
|
OldMsg->getLeftLoc(),
|
|
Base,
|
|
OldMsg->getSelector(),
|
|
SelLocs,
|
|
OldMsg->getMethodDecl(),
|
|
Args,
|
|
OldMsg->getRightLoc(),
|
|
OldMsg->isImplicit());
|
|
break;
|
|
|
|
case ObjCMessageExpr::SuperClass:
|
|
case ObjCMessageExpr::SuperInstance:
|
|
NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
|
|
OldMsg->getValueKind(),
|
|
OldMsg->getLeftLoc(),
|
|
OldMsg->getSuperLoc(),
|
|
OldMsg->getReceiverKind() == ObjCMessageExpr::SuperInstance,
|
|
OldMsg->getSuperType(),
|
|
OldMsg->getSelector(),
|
|
SelLocs,
|
|
OldMsg->getMethodDecl(),
|
|
Args,
|
|
OldMsg->getRightLoc(),
|
|
OldMsg->isImplicit());
|
|
break;
|
|
}
|
|
|
|
Stmt *Replacement = SynthMessageExpr(NewMsg);
|
|
ReplaceStmtWithRange(PseudoOp, Replacement, OldRange);
|
|
return Replacement;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewritePropertyOrImplicitGetter(PseudoObjectExpr *PseudoOp) {
|
|
SourceRange OldRange = PseudoOp->getSourceRange();
|
|
|
|
// We just magically know some things about the structure of this
|
|
// expression.
|
|
ObjCMessageExpr *OldMsg =
|
|
cast<ObjCMessageExpr>(PseudoOp->getResultExpr()->IgnoreImplicit());
|
|
|
|
// Because the rewriter doesn't allow us to rewrite rewritten code,
|
|
// we need to suppress rewriting the sub-statements.
|
|
Expr *Base = nullptr;
|
|
SmallVector<Expr*, 1> Args;
|
|
{
|
|
DisableReplaceStmtScope S(*this);
|
|
// Rebuild the base expression if we have one.
|
|
if (OldMsg->getReceiverKind() == ObjCMessageExpr::Instance) {
|
|
Base = OldMsg->getInstanceReceiver();
|
|
Base = cast<OpaqueValueExpr>(Base)->getSourceExpr();
|
|
Base = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Base));
|
|
}
|
|
unsigned numArgs = OldMsg->getNumArgs();
|
|
for (unsigned i = 0; i < numArgs; i++) {
|
|
Expr *Arg = OldMsg->getArg(i);
|
|
if (isa<OpaqueValueExpr>(Arg))
|
|
Arg = cast<OpaqueValueExpr>(Arg)->getSourceExpr();
|
|
Arg = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Arg));
|
|
Args.push_back(Arg);
|
|
}
|
|
}
|
|
|
|
// Intentionally empty.
|
|
SmallVector<SourceLocation, 1> SelLocs;
|
|
|
|
ObjCMessageExpr *NewMsg = nullptr;
|
|
switch (OldMsg->getReceiverKind()) {
|
|
case ObjCMessageExpr::Class:
|
|
NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
|
|
OldMsg->getValueKind(),
|
|
OldMsg->getLeftLoc(),
|
|
OldMsg->getClassReceiverTypeInfo(),
|
|
OldMsg->getSelector(),
|
|
SelLocs,
|
|
OldMsg->getMethodDecl(),
|
|
Args,
|
|
OldMsg->getRightLoc(),
|
|
OldMsg->isImplicit());
|
|
break;
|
|
|
|
case ObjCMessageExpr::Instance:
|
|
NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
|
|
OldMsg->getValueKind(),
|
|
OldMsg->getLeftLoc(),
|
|
Base,
|
|
OldMsg->getSelector(),
|
|
SelLocs,
|
|
OldMsg->getMethodDecl(),
|
|
Args,
|
|
OldMsg->getRightLoc(),
|
|
OldMsg->isImplicit());
|
|
break;
|
|
|
|
case ObjCMessageExpr::SuperClass:
|
|
case ObjCMessageExpr::SuperInstance:
|
|
NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
|
|
OldMsg->getValueKind(),
|
|
OldMsg->getLeftLoc(),
|
|
OldMsg->getSuperLoc(),
|
|
OldMsg->getReceiverKind() == ObjCMessageExpr::SuperInstance,
|
|
OldMsg->getSuperType(),
|
|
OldMsg->getSelector(),
|
|
SelLocs,
|
|
OldMsg->getMethodDecl(),
|
|
Args,
|
|
OldMsg->getRightLoc(),
|
|
OldMsg->isImplicit());
|
|
break;
|
|
}
|
|
|
|
Stmt *Replacement = SynthMessageExpr(NewMsg);
|
|
ReplaceStmtWithRange(PseudoOp, Replacement, OldRange);
|
|
return Replacement;
|
|
}
|
|
|
|
/// SynthCountByEnumWithState - To print:
|
|
/// ((NSUInteger (*)
|
|
/// (id, SEL, struct __objcFastEnumerationState *, id *, NSUInteger))
|
|
/// (void *)objc_msgSend)((id)l_collection,
|
|
/// sel_registerName(
|
|
/// "countByEnumeratingWithState:objects:count:"),
|
|
/// &enumState,
|
|
/// (id *)__rw_items, (NSUInteger)16)
|
|
///
|
|
void RewriteModernObjC::SynthCountByEnumWithState(std::string &buf) {
|
|
buf += "((_WIN_NSUInteger (*) (id, SEL, struct __objcFastEnumerationState *, "
|
|
"id *, _WIN_NSUInteger))(void *)objc_msgSend)";
|
|
buf += "\n\t\t";
|
|
buf += "((id)l_collection,\n\t\t";
|
|
buf += "sel_registerName(\"countByEnumeratingWithState:objects:count:\"),";
|
|
buf += "\n\t\t";
|
|
buf += "&enumState, "
|
|
"(id *)__rw_items, (_WIN_NSUInteger)16)";
|
|
}
|
|
|
|
/// RewriteBreakStmt - Rewrite for a break-stmt inside an ObjC2's foreach
|
|
/// statement to exit to its outer synthesized loop.
|
|
///
|
|
Stmt *RewriteModernObjC::RewriteBreakStmt(BreakStmt *S) {
|
|
if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
|
|
return S;
|
|
// replace break with goto __break_label
|
|
std::string buf;
|
|
|
|
SourceLocation startLoc = S->getBeginLoc();
|
|
buf = "goto __break_label_";
|
|
buf += utostr(ObjCBcLabelNo.back());
|
|
ReplaceText(startLoc, strlen("break"), buf);
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
void RewriteModernObjC::ConvertSourceLocationToLineDirective(
|
|
SourceLocation Loc,
|
|
std::string &LineString) {
|
|
if (Loc.isFileID() && GenerateLineInfo) {
|
|
LineString += "\n#line ";
|
|
PresumedLoc PLoc = SM->getPresumedLoc(Loc);
|
|
LineString += utostr(PLoc.getLine());
|
|
LineString += " \"";
|
|
LineString += Lexer::Stringify(PLoc.getFilename());
|
|
LineString += "\"\n";
|
|
}
|
|
}
|
|
|
|
/// RewriteContinueStmt - Rewrite for a continue-stmt inside an ObjC2's foreach
|
|
/// statement to continue with its inner synthesized loop.
|
|
///
|
|
Stmt *RewriteModernObjC::RewriteContinueStmt(ContinueStmt *S) {
|
|
if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
|
|
return S;
|
|
// replace continue with goto __continue_label
|
|
std::string buf;
|
|
|
|
SourceLocation startLoc = S->getBeginLoc();
|
|
buf = "goto __continue_label_";
|
|
buf += utostr(ObjCBcLabelNo.back());
|
|
ReplaceText(startLoc, strlen("continue"), buf);
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/// RewriteObjCForCollectionStmt - Rewriter for ObjC2's foreach statement.
|
|
/// It rewrites:
|
|
/// for ( type elem in collection) { stmts; }
|
|
|
|
/// Into:
|
|
/// {
|
|
/// type elem;
|
|
/// struct __objcFastEnumerationState enumState = { 0 };
|
|
/// id __rw_items[16];
|
|
/// id l_collection = (id)collection;
|
|
/// NSUInteger limit = [l_collection countByEnumeratingWithState:&enumState
|
|
/// objects:__rw_items count:16];
|
|
/// if (limit) {
|
|
/// unsigned long startMutations = *enumState.mutationsPtr;
|
|
/// do {
|
|
/// unsigned long counter = 0;
|
|
/// do {
|
|
/// if (startMutations != *enumState.mutationsPtr)
|
|
/// objc_enumerationMutation(l_collection);
|
|
/// elem = (type)enumState.itemsPtr[counter++];
|
|
/// stmts;
|
|
/// __continue_label: ;
|
|
/// } while (counter < limit);
|
|
/// } while ((limit = [l_collection countByEnumeratingWithState:&enumState
|
|
/// objects:__rw_items count:16]));
|
|
/// elem = nil;
|
|
/// __break_label: ;
|
|
/// }
|
|
/// else
|
|
/// elem = nil;
|
|
/// }
|
|
///
|
|
Stmt *RewriteModernObjC::RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
|
|
SourceLocation OrigEnd) {
|
|
assert(!Stmts.empty() && "ObjCForCollectionStmt - Statement stack empty");
|
|
assert(isa<ObjCForCollectionStmt>(Stmts.back()) &&
|
|
"ObjCForCollectionStmt Statement stack mismatch");
|
|
assert(!ObjCBcLabelNo.empty() &&
|
|
"ObjCForCollectionStmt - Label No stack empty");
|
|
|
|
SourceLocation startLoc = S->getBeginLoc();
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
StringRef elementName;
|
|
std::string elementTypeAsString;
|
|
std::string buf;
|
|
// line directive first.
|
|
SourceLocation ForEachLoc = S->getForLoc();
|
|
ConvertSourceLocationToLineDirective(ForEachLoc, buf);
|
|
buf += "{\n\t";
|
|
if (DeclStmt *DS = dyn_cast<DeclStmt>(S->getElement())) {
|
|
// type elem;
|
|
NamedDecl* D = cast<NamedDecl>(DS->getSingleDecl());
|
|
QualType ElementType = cast<ValueDecl>(D)->getType();
|
|
if (ElementType->isObjCQualifiedIdType() ||
|
|
ElementType->isObjCQualifiedInterfaceType())
|
|
// Simply use 'id' for all qualified types.
|
|
elementTypeAsString = "id";
|
|
else
|
|
elementTypeAsString = ElementType.getAsString(Context->getPrintingPolicy());
|
|
buf += elementTypeAsString;
|
|
buf += " ";
|
|
elementName = D->getName();
|
|
buf += elementName;
|
|
buf += ";\n\t";
|
|
}
|
|
else {
|
|
DeclRefExpr *DR = cast<DeclRefExpr>(S->getElement());
|
|
elementName = DR->getDecl()->getName();
|
|
ValueDecl *VD = DR->getDecl();
|
|
if (VD->getType()->isObjCQualifiedIdType() ||
|
|
VD->getType()->isObjCQualifiedInterfaceType())
|
|
// Simply use 'id' for all qualified types.
|
|
elementTypeAsString = "id";
|
|
else
|
|
elementTypeAsString = VD->getType().getAsString(Context->getPrintingPolicy());
|
|
}
|
|
|
|
// struct __objcFastEnumerationState enumState = { 0 };
|
|
buf += "struct __objcFastEnumerationState enumState = { 0 };\n\t";
|
|
// id __rw_items[16];
|
|
buf += "id __rw_items[16];\n\t";
|
|
// id l_collection = (id)
|
|
buf += "id l_collection = (id)";
|
|
// Find start location of 'collection' the hard way!
|
|
const char *startCollectionBuf = startBuf;
|
|
startCollectionBuf += 3; // skip 'for'
|
|
startCollectionBuf = strchr(startCollectionBuf, '(');
|
|
startCollectionBuf++; // skip '('
|
|
// find 'in' and skip it.
|
|
while (*startCollectionBuf != ' ' ||
|
|
*(startCollectionBuf+1) != 'i' || *(startCollectionBuf+2) != 'n' ||
|
|
(*(startCollectionBuf+3) != ' ' &&
|
|
*(startCollectionBuf+3) != '[' && *(startCollectionBuf+3) != '('))
|
|
startCollectionBuf++;
|
|
startCollectionBuf += 3;
|
|
|
|
// Replace: "for (type element in" with string constructed thus far.
|
|
ReplaceText(startLoc, startCollectionBuf - startBuf, buf);
|
|
// Replace ')' in for '(' type elem in collection ')' with ';'
|
|
SourceLocation rightParenLoc = S->getRParenLoc();
|
|
const char *rparenBuf = SM->getCharacterData(rightParenLoc);
|
|
SourceLocation lparenLoc = startLoc.getLocWithOffset(rparenBuf-startBuf);
|
|
buf = ";\n\t";
|
|
|
|
// unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
|
|
// objects:__rw_items count:16];
|
|
// which is synthesized into:
|
|
// NSUInteger limit =
|
|
// ((NSUInteger (*)
|
|
// (id, SEL, struct __objcFastEnumerationState *, id *, NSUInteger))
|
|
// (void *)objc_msgSend)((id)l_collection,
|
|
// sel_registerName(
|
|
// "countByEnumeratingWithState:objects:count:"),
|
|
// (struct __objcFastEnumerationState *)&state,
|
|
// (id *)__rw_items, (NSUInteger)16);
|
|
buf += "_WIN_NSUInteger limit =\n\t\t";
|
|
SynthCountByEnumWithState(buf);
|
|
buf += ";\n\t";
|
|
/// if (limit) {
|
|
/// unsigned long startMutations = *enumState.mutationsPtr;
|
|
/// do {
|
|
/// unsigned long counter = 0;
|
|
/// do {
|
|
/// if (startMutations != *enumState.mutationsPtr)
|
|
/// objc_enumerationMutation(l_collection);
|
|
/// elem = (type)enumState.itemsPtr[counter++];
|
|
buf += "if (limit) {\n\t";
|
|
buf += "unsigned long startMutations = *enumState.mutationsPtr;\n\t";
|
|
buf += "do {\n\t\t";
|
|
buf += "unsigned long counter = 0;\n\t\t";
|
|
buf += "do {\n\t\t\t";
|
|
buf += "if (startMutations != *enumState.mutationsPtr)\n\t\t\t\t";
|
|
buf += "objc_enumerationMutation(l_collection);\n\t\t\t";
|
|
buf += elementName;
|
|
buf += " = (";
|
|
buf += elementTypeAsString;
|
|
buf += ")enumState.itemsPtr[counter++];";
|
|
// Replace ')' in for '(' type elem in collection ')' with all of these.
|
|
ReplaceText(lparenLoc, 1, buf);
|
|
|
|
/// __continue_label: ;
|
|
/// } while (counter < limit);
|
|
/// } while ((limit = [l_collection countByEnumeratingWithState:&enumState
|
|
/// objects:__rw_items count:16]));
|
|
/// elem = nil;
|
|
/// __break_label: ;
|
|
/// }
|
|
/// else
|
|
/// elem = nil;
|
|
/// }
|
|
///
|
|
buf = ";\n\t";
|
|
buf += "__continue_label_";
|
|
buf += utostr(ObjCBcLabelNo.back());
|
|
buf += ": ;";
|
|
buf += "\n\t\t";
|
|
buf += "} while (counter < limit);\n\t";
|
|
buf += "} while ((limit = ";
|
|
SynthCountByEnumWithState(buf);
|
|
buf += "));\n\t";
|
|
buf += elementName;
|
|
buf += " = ((";
|
|
buf += elementTypeAsString;
|
|
buf += ")0);\n\t";
|
|
buf += "__break_label_";
|
|
buf += utostr(ObjCBcLabelNo.back());
|
|
buf += ": ;\n\t";
|
|
buf += "}\n\t";
|
|
buf += "else\n\t\t";
|
|
buf += elementName;
|
|
buf += " = ((";
|
|
buf += elementTypeAsString;
|
|
buf += ")0);\n\t";
|
|
buf += "}\n";
|
|
|
|
// Insert all these *after* the statement body.
|
|
// FIXME: If this should support Obj-C++, support CXXTryStmt
|
|
if (isa<CompoundStmt>(S->getBody())) {
|
|
SourceLocation endBodyLoc = OrigEnd.getLocWithOffset(1);
|
|
InsertText(endBodyLoc, buf);
|
|
} else {
|
|
/* Need to treat single statements specially. For example:
|
|
*
|
|
* for (A *a in b) if (stuff()) break;
|
|
* for (A *a in b) xxxyy;
|
|
*
|
|
* The following code simply scans ahead to the semi to find the actual end.
|
|
*/
|
|
const char *stmtBuf = SM->getCharacterData(OrigEnd);
|
|
const char *semiBuf = strchr(stmtBuf, ';');
|
|
assert(semiBuf && "Can't find ';'");
|
|
SourceLocation endBodyLoc = OrigEnd.getLocWithOffset(semiBuf-stmtBuf+1);
|
|
InsertText(endBodyLoc, buf);
|
|
}
|
|
Stmts.pop_back();
|
|
ObjCBcLabelNo.pop_back();
|
|
return nullptr;
|
|
}
|
|
|
|
static void Write_RethrowObject(std::string &buf) {
|
|
buf += "{ struct _FIN { _FIN(id reth) : rethrow(reth) {}\n";
|
|
buf += "\t~_FIN() { if (rethrow) objc_exception_throw(rethrow); }\n";
|
|
buf += "\tid rethrow;\n";
|
|
buf += "\t} _fin_force_rethow(_rethrow);";
|
|
}
|
|
|
|
/// RewriteObjCSynchronizedStmt -
|
|
/// This routine rewrites @synchronized(expr) stmt;
|
|
/// into:
|
|
/// objc_sync_enter(expr);
|
|
/// @try stmt @finally { objc_sync_exit(expr); }
|
|
///
|
|
Stmt *RewriteModernObjC::RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
|
|
// Get the start location and compute the semi location.
|
|
SourceLocation startLoc = S->getBeginLoc();
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
|
|
assert((*startBuf == '@') && "bogus @synchronized location");
|
|
|
|
std::string buf;
|
|
SourceLocation SynchLoc = S->getAtSynchronizedLoc();
|
|
ConvertSourceLocationToLineDirective(SynchLoc, buf);
|
|
buf += "{ id _rethrow = 0; id _sync_obj = (id)";
|
|
|
|
const char *lparenBuf = startBuf;
|
|
while (*lparenBuf != '(') lparenBuf++;
|
|
ReplaceText(startLoc, lparenBuf-startBuf+1, buf);
|
|
|
|
buf = "; objc_sync_enter(_sync_obj);\n";
|
|
buf += "try {\n\tstruct _SYNC_EXIT { _SYNC_EXIT(id arg) : sync_exit(arg) {}";
|
|
buf += "\n\t~_SYNC_EXIT() {objc_sync_exit(sync_exit);}";
|
|
buf += "\n\tid sync_exit;";
|
|
buf += "\n\t} _sync_exit(_sync_obj);\n";
|
|
|
|
// We can't use S->getSynchExpr()->getEndLoc() to find the end location, since
|
|
// the sync expression is typically a message expression that's already
|
|
// been rewritten! (which implies the SourceLocation's are invalid).
|
|
SourceLocation RParenExprLoc = S->getSynchBody()->getBeginLoc();
|
|
const char *RParenExprLocBuf = SM->getCharacterData(RParenExprLoc);
|
|
while (*RParenExprLocBuf != ')') RParenExprLocBuf--;
|
|
RParenExprLoc = startLoc.getLocWithOffset(RParenExprLocBuf-startBuf);
|
|
|
|
SourceLocation LBranceLoc = S->getSynchBody()->getBeginLoc();
|
|
const char *LBraceLocBuf = SM->getCharacterData(LBranceLoc);
|
|
assert (*LBraceLocBuf == '{');
|
|
ReplaceText(RParenExprLoc, (LBraceLocBuf - SM->getCharacterData(RParenExprLoc) + 1), buf);
|
|
|
|
SourceLocation startRBraceLoc = S->getSynchBody()->getEndLoc();
|
|
assert((*SM->getCharacterData(startRBraceLoc) == '}') &&
|
|
"bogus @synchronized block");
|
|
|
|
buf = "} catch (id e) {_rethrow = e;}\n";
|
|
Write_RethrowObject(buf);
|
|
buf += "}\n";
|
|
buf += "}\n";
|
|
|
|
ReplaceText(startRBraceLoc, 1, buf);
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
void RewriteModernObjC::WarnAboutReturnGotoStmts(Stmt *S)
|
|
{
|
|
// Perform a bottom up traversal of all children.
|
|
for (Stmt *SubStmt : S->children())
|
|
if (SubStmt)
|
|
WarnAboutReturnGotoStmts(SubStmt);
|
|
|
|
if (isa<ReturnStmt>(S) || isa<GotoStmt>(S)) {
|
|
Diags.Report(Context->getFullLoc(S->getBeginLoc()),
|
|
TryFinallyContainsReturnDiag);
|
|
}
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
|
|
SourceLocation startLoc = S->getAtLoc();
|
|
ReplaceText(startLoc, strlen("@autoreleasepool"), "/* @autoreleasepool */");
|
|
ReplaceText(S->getSubStmt()->getBeginLoc(), 1,
|
|
"{ __AtAutoreleasePool __autoreleasepool; ");
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteObjCTryStmt(ObjCAtTryStmt *S) {
|
|
ObjCAtFinallyStmt *finalStmt = S->getFinallyStmt();
|
|
bool noCatch = S->getNumCatchStmts() == 0;
|
|
std::string buf;
|
|
SourceLocation TryLocation = S->getAtTryLoc();
|
|
ConvertSourceLocationToLineDirective(TryLocation, buf);
|
|
|
|
if (finalStmt) {
|
|
if (noCatch)
|
|
buf += "{ id volatile _rethrow = 0;\n";
|
|
else {
|
|
buf += "{ id volatile _rethrow = 0;\ntry {\n";
|
|
}
|
|
}
|
|
// Get the start location and compute the semi location.
|
|
SourceLocation startLoc = S->getBeginLoc();
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
|
|
assert((*startBuf == '@') && "bogus @try location");
|
|
if (finalStmt)
|
|
ReplaceText(startLoc, 1, buf);
|
|
else
|
|
// @try -> try
|
|
ReplaceText(startLoc, 1, "");
|
|
|
|
for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I) {
|
|
ObjCAtCatchStmt *Catch = S->getCatchStmt(I);
|
|
VarDecl *catchDecl = Catch->getCatchParamDecl();
|
|
|
|
startLoc = Catch->getBeginLoc();
|
|
bool AtRemoved = false;
|
|
if (catchDecl) {
|
|
QualType t = catchDecl->getType();
|
|
if (const ObjCObjectPointerType *Ptr = t->getAs<ObjCObjectPointerType>()) {
|
|
// Should be a pointer to a class.
|
|
ObjCInterfaceDecl *IDecl = Ptr->getObjectType()->getInterface();
|
|
if (IDecl) {
|
|
std::string Result;
|
|
ConvertSourceLocationToLineDirective(Catch->getBeginLoc(), Result);
|
|
|
|
startBuf = SM->getCharacterData(startLoc);
|
|
assert((*startBuf == '@') && "bogus @catch location");
|
|
SourceLocation rParenLoc = Catch->getRParenLoc();
|
|
const char *rParenBuf = SM->getCharacterData(rParenLoc);
|
|
|
|
// _objc_exc_Foo *_e as argument to catch.
|
|
Result += "catch (_objc_exc_"; Result += IDecl->getNameAsString();
|
|
Result += " *_"; Result += catchDecl->getNameAsString();
|
|
Result += ")";
|
|
ReplaceText(startLoc, rParenBuf-startBuf+1, Result);
|
|
// Foo *e = (Foo *)_e;
|
|
Result.clear();
|
|
Result = "{ ";
|
|
Result += IDecl->getNameAsString();
|
|
Result += " *"; Result += catchDecl->getNameAsString();
|
|
Result += " = ("; Result += IDecl->getNameAsString(); Result += "*)";
|
|
Result += "_"; Result += catchDecl->getNameAsString();
|
|
|
|
Result += "; ";
|
|
SourceLocation lBraceLoc = Catch->getCatchBody()->getBeginLoc();
|
|
ReplaceText(lBraceLoc, 1, Result);
|
|
AtRemoved = true;
|
|
}
|
|
}
|
|
}
|
|
if (!AtRemoved)
|
|
// @catch -> catch
|
|
ReplaceText(startLoc, 1, "");
|
|
|
|
}
|
|
if (finalStmt) {
|
|
buf.clear();
|
|
SourceLocation FinallyLoc = finalStmt->getBeginLoc();
|
|
|
|
if (noCatch) {
|
|
ConvertSourceLocationToLineDirective(FinallyLoc, buf);
|
|
buf += "catch (id e) {_rethrow = e;}\n";
|
|
}
|
|
else {
|
|
buf += "}\n";
|
|
ConvertSourceLocationToLineDirective(FinallyLoc, buf);
|
|
buf += "catch (id e) {_rethrow = e;}\n";
|
|
}
|
|
|
|
SourceLocation startFinalLoc = finalStmt->getBeginLoc();
|
|
ReplaceText(startFinalLoc, 8, buf);
|
|
Stmt *body = finalStmt->getFinallyBody();
|
|
SourceLocation startFinalBodyLoc = body->getBeginLoc();
|
|
buf.clear();
|
|
Write_RethrowObject(buf);
|
|
ReplaceText(startFinalBodyLoc, 1, buf);
|
|
|
|
SourceLocation endFinalBodyLoc = body->getEndLoc();
|
|
ReplaceText(endFinalBodyLoc, 1, "}\n}");
|
|
// Now check for any return/continue/go statements within the @try.
|
|
WarnAboutReturnGotoStmts(S->getTryBody());
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
// This can't be done with ReplaceStmt(S, ThrowExpr), since
|
|
// the throw expression is typically a message expression that's already
|
|
// been rewritten! (which implies the SourceLocation's are invalid).
|
|
Stmt *RewriteModernObjC::RewriteObjCThrowStmt(ObjCAtThrowStmt *S) {
|
|
// Get the start location and compute the semi location.
|
|
SourceLocation startLoc = S->getBeginLoc();
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
|
|
assert((*startBuf == '@') && "bogus @throw location");
|
|
|
|
std::string buf;
|
|
/* void objc_exception_throw(id) __attribute__((noreturn)); */
|
|
if (S->getThrowExpr())
|
|
buf = "objc_exception_throw(";
|
|
else
|
|
buf = "throw";
|
|
|
|
// handle "@ throw" correctly.
|
|
const char *wBuf = strchr(startBuf, 'w');
|
|
assert((*wBuf == 'w') && "@throw: can't find 'w'");
|
|
ReplaceText(startLoc, wBuf-startBuf+1, buf);
|
|
|
|
SourceLocation endLoc = S->getEndLoc();
|
|
const char *endBuf = SM->getCharacterData(endLoc);
|
|
const char *semiBuf = strchr(endBuf, ';');
|
|
assert((*semiBuf == ';') && "@throw: can't find ';'");
|
|
SourceLocation semiLoc = startLoc.getLocWithOffset(semiBuf-startBuf);
|
|
if (S->getThrowExpr())
|
|
ReplaceText(semiLoc, 1, ");");
|
|
return nullptr;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteAtEncode(ObjCEncodeExpr *Exp) {
|
|
// Create a new string expression.
|
|
std::string StrEncoding;
|
|
Context->getObjCEncodingForType(Exp->getEncodedType(), StrEncoding);
|
|
Expr *Replacement = getStringLiteral(StrEncoding);
|
|
ReplaceStmt(Exp, Replacement);
|
|
|
|
// Replace this subexpr in the parent.
|
|
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
|
|
return Replacement;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteAtSelector(ObjCSelectorExpr *Exp) {
|
|
if (!SelGetUidFunctionDecl)
|
|
SynthSelGetUidFunctionDecl();
|
|
assert(SelGetUidFunctionDecl && "Can't find sel_registerName() decl");
|
|
// Create a call to sel_registerName("selName").
|
|
SmallVector<Expr*, 8> SelExprs;
|
|
SelExprs.push_back(getStringLiteral(Exp->getSelector().getAsString()));
|
|
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
|
|
SelExprs);
|
|
ReplaceStmt(Exp, SelExp);
|
|
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
|
|
return SelExp;
|
|
}
|
|
|
|
CallExpr *
|
|
RewriteModernObjC::SynthesizeCallToFunctionDecl(FunctionDecl *FD,
|
|
ArrayRef<Expr *> Args,
|
|
SourceLocation StartLoc,
|
|
SourceLocation EndLoc) {
|
|
// Get the type, we will need to reference it in a couple spots.
|
|
QualType msgSendType = FD->getType();
|
|
|
|
// Create a reference to the objc_msgSend() declaration.
|
|
DeclRefExpr *DRE = new (Context) DeclRefExpr(*Context, FD, false, msgSendType,
|
|
VK_LValue, SourceLocation());
|
|
|
|
// Now, we cast the reference to a pointer to the objc_msgSend type.
|
|
QualType pToFunc = Context->getPointerType(msgSendType);
|
|
ImplicitCastExpr *ICE =
|
|
ImplicitCastExpr::Create(*Context, pToFunc, CK_FunctionToPointerDecay,
|
|
DRE, nullptr, VK_RValue);
|
|
|
|
const FunctionType *FT = msgSendType->getAs<FunctionType>();
|
|
|
|
CallExpr *Exp = CallExpr::Create(
|
|
*Context, ICE, Args, FT->getCallResultType(*Context), VK_RValue, EndLoc);
|
|
return Exp;
|
|
}
|
|
|
|
static bool scanForProtocolRefs(const char *startBuf, const char *endBuf,
|
|
const char *&startRef, const char *&endRef) {
|
|
while (startBuf < endBuf) {
|
|
if (*startBuf == '<')
|
|
startRef = startBuf; // mark the start.
|
|
if (*startBuf == '>') {
|
|
if (startRef && *startRef == '<') {
|
|
endRef = startBuf; // mark the end.
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
startBuf++;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void scanToNextArgument(const char *&argRef) {
|
|
int angle = 0;
|
|
while (*argRef != ')' && (*argRef != ',' || angle > 0)) {
|
|
if (*argRef == '<')
|
|
angle++;
|
|
else if (*argRef == '>')
|
|
angle--;
|
|
argRef++;
|
|
}
|
|
assert(angle == 0 && "scanToNextArgument - bad protocol type syntax");
|
|
}
|
|
|
|
bool RewriteModernObjC::needToScanForQualifiers(QualType T) {
|
|
if (T->isObjCQualifiedIdType())
|
|
return true;
|
|
if (const PointerType *PT = T->getAs<PointerType>()) {
|
|
if (PT->getPointeeType()->isObjCQualifiedIdType())
|
|
return true;
|
|
}
|
|
if (T->isObjCObjectPointerType()) {
|
|
T = T->getPointeeType();
|
|
return T->isObjCQualifiedInterfaceType();
|
|
}
|
|
if (T->isArrayType()) {
|
|
QualType ElemTy = Context->getBaseElementType(T);
|
|
return needToScanForQualifiers(ElemTy);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteObjCQualifiedInterfaceTypes(Expr *E) {
|
|
QualType Type = E->getType();
|
|
if (needToScanForQualifiers(Type)) {
|
|
SourceLocation Loc, EndLoc;
|
|
|
|
if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E)) {
|
|
Loc = ECE->getLParenLoc();
|
|
EndLoc = ECE->getRParenLoc();
|
|
} else {
|
|
Loc = E->getBeginLoc();
|
|
EndLoc = E->getEndLoc();
|
|
}
|
|
// This will defend against trying to rewrite synthesized expressions.
|
|
if (Loc.isInvalid() || EndLoc.isInvalid())
|
|
return;
|
|
|
|
const char *startBuf = SM->getCharacterData(Loc);
|
|
const char *endBuf = SM->getCharacterData(EndLoc);
|
|
const char *startRef = nullptr, *endRef = nullptr;
|
|
if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
|
|
// Get the locations of the startRef, endRef.
|
|
SourceLocation LessLoc = Loc.getLocWithOffset(startRef-startBuf);
|
|
SourceLocation GreaterLoc = Loc.getLocWithOffset(endRef-startBuf+1);
|
|
// Comment out the protocol references.
|
|
InsertText(LessLoc, "/*");
|
|
InsertText(GreaterLoc, "*/");
|
|
}
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteObjCQualifiedInterfaceTypes(Decl *Dcl) {
|
|
SourceLocation Loc;
|
|
QualType Type;
|
|
const FunctionProtoType *proto = nullptr;
|
|
if (VarDecl *VD = dyn_cast<VarDecl>(Dcl)) {
|
|
Loc = VD->getLocation();
|
|
Type = VD->getType();
|
|
}
|
|
else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(Dcl)) {
|
|
Loc = FD->getLocation();
|
|
// Check for ObjC 'id' and class types that have been adorned with protocol
|
|
// information (id<p>, C<p>*). The protocol references need to be rewritten!
|
|
const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
|
|
assert(funcType && "missing function type");
|
|
proto = dyn_cast<FunctionProtoType>(funcType);
|
|
if (!proto)
|
|
return;
|
|
Type = proto->getReturnType();
|
|
}
|
|
else if (FieldDecl *FD = dyn_cast<FieldDecl>(Dcl)) {
|
|
Loc = FD->getLocation();
|
|
Type = FD->getType();
|
|
}
|
|
else if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(Dcl)) {
|
|
Loc = TD->getLocation();
|
|
Type = TD->getUnderlyingType();
|
|
}
|
|
else
|
|
return;
|
|
|
|
if (needToScanForQualifiers(Type)) {
|
|
// Since types are unique, we need to scan the buffer.
|
|
|
|
const char *endBuf = SM->getCharacterData(Loc);
|
|
const char *startBuf = endBuf;
|
|
while (*startBuf != ';' && *startBuf != '<' && startBuf != MainFileStart)
|
|
startBuf--; // scan backward (from the decl location) for return type.
|
|
const char *startRef = nullptr, *endRef = nullptr;
|
|
if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
|
|
// Get the locations of the startRef, endRef.
|
|
SourceLocation LessLoc = Loc.getLocWithOffset(startRef-endBuf);
|
|
SourceLocation GreaterLoc = Loc.getLocWithOffset(endRef-endBuf+1);
|
|
// Comment out the protocol references.
|
|
InsertText(LessLoc, "/*");
|
|
InsertText(GreaterLoc, "*/");
|
|
}
|
|
}
|
|
if (!proto)
|
|
return; // most likely, was a variable
|
|
// Now check arguments.
|
|
const char *startBuf = SM->getCharacterData(Loc);
|
|
const char *startFuncBuf = startBuf;
|
|
for (unsigned i = 0; i < proto->getNumParams(); i++) {
|
|
if (needToScanForQualifiers(proto->getParamType(i))) {
|
|
// Since types are unique, we need to scan the buffer.
|
|
|
|
const char *endBuf = startBuf;
|
|
// scan forward (from the decl location) for argument types.
|
|
scanToNextArgument(endBuf);
|
|
const char *startRef = nullptr, *endRef = nullptr;
|
|
if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
|
|
// Get the locations of the startRef, endRef.
|
|
SourceLocation LessLoc =
|
|
Loc.getLocWithOffset(startRef-startFuncBuf);
|
|
SourceLocation GreaterLoc =
|
|
Loc.getLocWithOffset(endRef-startFuncBuf+1);
|
|
// Comment out the protocol references.
|
|
InsertText(LessLoc, "/*");
|
|
InsertText(GreaterLoc, "*/");
|
|
}
|
|
startBuf = ++endBuf;
|
|
}
|
|
else {
|
|
// If the function name is derived from a macro expansion, then the
|
|
// argument buffer will not follow the name. Need to speak with Chris.
|
|
while (*startBuf && *startBuf != ')' && *startBuf != ',')
|
|
startBuf++; // scan forward (from the decl location) for argument types.
|
|
startBuf++;
|
|
}
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteTypeOfDecl(VarDecl *ND) {
|
|
QualType QT = ND->getType();
|
|
const Type* TypePtr = QT->getAs<Type>();
|
|
if (!isa<TypeOfExprType>(TypePtr))
|
|
return;
|
|
while (isa<TypeOfExprType>(TypePtr)) {
|
|
const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
|
|
QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
|
|
TypePtr = QT->getAs<Type>();
|
|
}
|
|
// FIXME. This will not work for multiple declarators; as in:
|
|
// __typeof__(a) b,c,d;
|
|
std::string TypeAsString(QT.getAsString(Context->getPrintingPolicy()));
|
|
SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
|
|
const char *startBuf = SM->getCharacterData(DeclLoc);
|
|
if (ND->getInit()) {
|
|
std::string Name(ND->getNameAsString());
|
|
TypeAsString += " " + Name + " = ";
|
|
Expr *E = ND->getInit();
|
|
SourceLocation startLoc;
|
|
if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
|
|
startLoc = ECE->getLParenLoc();
|
|
else
|
|
startLoc = E->getBeginLoc();
|
|
startLoc = SM->getExpansionLoc(startLoc);
|
|
const char *endBuf = SM->getCharacterData(startLoc);
|
|
ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString);
|
|
}
|
|
else {
|
|
SourceLocation X = ND->getEndLoc();
|
|
X = SM->getExpansionLoc(X);
|
|
const char *endBuf = SM->getCharacterData(X);
|
|
ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString);
|
|
}
|
|
}
|
|
|
|
// SynthSelGetUidFunctionDecl - SEL sel_registerName(const char *str);
|
|
void RewriteModernObjC::SynthSelGetUidFunctionDecl() {
|
|
IdentifierInfo *SelGetUidIdent = &Context->Idents.get("sel_registerName");
|
|
SmallVector<QualType, 16> ArgTys;
|
|
ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
|
|
QualType getFuncType =
|
|
getSimpleFunctionType(Context->getObjCSelType(), ArgTys);
|
|
SelGetUidFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SourceLocation(),
|
|
SelGetUidIdent, getFuncType,
|
|
nullptr, SC_Extern);
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteFunctionDecl(FunctionDecl *FD) {
|
|
// declared in <objc/objc.h>
|
|
if (FD->getIdentifier() &&
|
|
FD->getName() == "sel_registerName") {
|
|
SelGetUidFunctionDecl = FD;
|
|
return;
|
|
}
|
|
RewriteObjCQualifiedInterfaceTypes(FD);
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteBlockPointerType(std::string& Str, QualType Type) {
|
|
std::string TypeString(Type.getAsString(Context->getPrintingPolicy()));
|
|
const char *argPtr = TypeString.c_str();
|
|
if (!strchr(argPtr, '^')) {
|
|
Str += TypeString;
|
|
return;
|
|
}
|
|
while (*argPtr) {
|
|
Str += (*argPtr == '^' ? '*' : *argPtr);
|
|
argPtr++;
|
|
}
|
|
}
|
|
|
|
// FIXME. Consolidate this routine with RewriteBlockPointerType.
|
|
void RewriteModernObjC::RewriteBlockPointerTypeVariable(std::string& Str,
|
|
ValueDecl *VD) {
|
|
QualType Type = VD->getType();
|
|
std::string TypeString(Type.getAsString(Context->getPrintingPolicy()));
|
|
const char *argPtr = TypeString.c_str();
|
|
int paren = 0;
|
|
while (*argPtr) {
|
|
switch (*argPtr) {
|
|
case '(':
|
|
Str += *argPtr;
|
|
paren++;
|
|
break;
|
|
case ')':
|
|
Str += *argPtr;
|
|
paren--;
|
|
break;
|
|
case '^':
|
|
Str += '*';
|
|
if (paren == 1)
|
|
Str += VD->getNameAsString();
|
|
break;
|
|
default:
|
|
Str += *argPtr;
|
|
break;
|
|
}
|
|
argPtr++;
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteBlockLiteralFunctionDecl(FunctionDecl *FD) {
|
|
SourceLocation FunLocStart = FD->getTypeSpecStartLoc();
|
|
const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
|
|
const FunctionProtoType *proto = dyn_cast<FunctionProtoType>(funcType);
|
|
if (!proto)
|
|
return;
|
|
QualType Type = proto->getReturnType();
|
|
std::string FdStr = Type.getAsString(Context->getPrintingPolicy());
|
|
FdStr += " ";
|
|
FdStr += FD->getName();
|
|
FdStr += "(";
|
|
unsigned numArgs = proto->getNumParams();
|
|
for (unsigned i = 0; i < numArgs; i++) {
|
|
QualType ArgType = proto->getParamType(i);
|
|
RewriteBlockPointerType(FdStr, ArgType);
|
|
if (i+1 < numArgs)
|
|
FdStr += ", ";
|
|
}
|
|
if (FD->isVariadic()) {
|
|
FdStr += (numArgs > 0) ? ", ...);\n" : "...);\n";
|
|
}
|
|
else
|
|
FdStr += ");\n";
|
|
InsertText(FunLocStart, FdStr);
|
|
}
|
|
|
|
// SynthSuperConstructorFunctionDecl - id __rw_objc_super(id obj, id super);
|
|
void RewriteModernObjC::SynthSuperConstructorFunctionDecl() {
|
|
if (SuperConstructorFunctionDecl)
|
|
return;
|
|
IdentifierInfo *msgSendIdent = &Context->Idents.get("__rw_objc_super");
|
|
SmallVector<QualType, 16> ArgTys;
|
|
QualType argT = Context->getObjCIdType();
|
|
assert(!argT.isNull() && "Can't find 'id' type");
|
|
ArgTys.push_back(argT);
|
|
ArgTys.push_back(argT);
|
|
QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
|
|
ArgTys);
|
|
SuperConstructorFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType,
|
|
nullptr, SC_Extern);
|
|
}
|
|
|
|
// SynthMsgSendFunctionDecl - id objc_msgSend(id self, SEL op, ...);
|
|
void RewriteModernObjC::SynthMsgSendFunctionDecl() {
|
|
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend");
|
|
SmallVector<QualType, 16> ArgTys;
|
|
QualType argT = Context->getObjCIdType();
|
|
assert(!argT.isNull() && "Can't find 'id' type");
|
|
ArgTys.push_back(argT);
|
|
argT = Context->getObjCSelType();
|
|
assert(!argT.isNull() && "Can't find 'SEL' type");
|
|
ArgTys.push_back(argT);
|
|
QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
|
|
ArgTys, /*variadic=*/true);
|
|
MsgSendFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType, nullptr,
|
|
SC_Extern);
|
|
}
|
|
|
|
// SynthMsgSendSuperFunctionDecl - id objc_msgSendSuper(void);
|
|
void RewriteModernObjC::SynthMsgSendSuperFunctionDecl() {
|
|
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSendSuper");
|
|
SmallVector<QualType, 2> ArgTys;
|
|
ArgTys.push_back(Context->VoidTy);
|
|
QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
|
|
ArgTys, /*variadic=*/true);
|
|
MsgSendSuperFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType,
|
|
nullptr, SC_Extern);
|
|
}
|
|
|
|
// SynthMsgSendStretFunctionDecl - id objc_msgSend_stret(id self, SEL op, ...);
|
|
void RewriteModernObjC::SynthMsgSendStretFunctionDecl() {
|
|
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_stret");
|
|
SmallVector<QualType, 16> ArgTys;
|
|
QualType argT = Context->getObjCIdType();
|
|
assert(!argT.isNull() && "Can't find 'id' type");
|
|
ArgTys.push_back(argT);
|
|
argT = Context->getObjCSelType();
|
|
assert(!argT.isNull() && "Can't find 'SEL' type");
|
|
ArgTys.push_back(argT);
|
|
QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
|
|
ArgTys, /*variadic=*/true);
|
|
MsgSendStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType,
|
|
nullptr, SC_Extern);
|
|
}
|
|
|
|
// SynthMsgSendSuperStretFunctionDecl -
|
|
// id objc_msgSendSuper_stret(void);
|
|
void RewriteModernObjC::SynthMsgSendSuperStretFunctionDecl() {
|
|
IdentifierInfo *msgSendIdent =
|
|
&Context->Idents.get("objc_msgSendSuper_stret");
|
|
SmallVector<QualType, 2> ArgTys;
|
|
ArgTys.push_back(Context->VoidTy);
|
|
QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
|
|
ArgTys, /*variadic=*/true);
|
|
MsgSendSuperStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SourceLocation(),
|
|
msgSendIdent,
|
|
msgSendType, nullptr,
|
|
SC_Extern);
|
|
}
|
|
|
|
// SynthMsgSendFpretFunctionDecl - double objc_msgSend_fpret(id self, SEL op, ...);
|
|
void RewriteModernObjC::SynthMsgSendFpretFunctionDecl() {
|
|
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_fpret");
|
|
SmallVector<QualType, 16> ArgTys;
|
|
QualType argT = Context->getObjCIdType();
|
|
assert(!argT.isNull() && "Can't find 'id' type");
|
|
ArgTys.push_back(argT);
|
|
argT = Context->getObjCSelType();
|
|
assert(!argT.isNull() && "Can't find 'SEL' type");
|
|
ArgTys.push_back(argT);
|
|
QualType msgSendType = getSimpleFunctionType(Context->DoubleTy,
|
|
ArgTys, /*variadic=*/true);
|
|
MsgSendFpretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType,
|
|
nullptr, SC_Extern);
|
|
}
|
|
|
|
// SynthGetClassFunctionDecl - Class objc_getClass(const char *name);
|
|
void RewriteModernObjC::SynthGetClassFunctionDecl() {
|
|
IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getClass");
|
|
SmallVector<QualType, 16> ArgTys;
|
|
ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
|
|
QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(),
|
|
ArgTys);
|
|
GetClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SourceLocation(),
|
|
getClassIdent, getClassType,
|
|
nullptr, SC_Extern);
|
|
}
|
|
|
|
// SynthGetSuperClassFunctionDecl - Class class_getSuperclass(Class cls);
|
|
void RewriteModernObjC::SynthGetSuperClassFunctionDecl() {
|
|
IdentifierInfo *getSuperClassIdent =
|
|
&Context->Idents.get("class_getSuperclass");
|
|
SmallVector<QualType, 16> ArgTys;
|
|
ArgTys.push_back(Context->getObjCClassType());
|
|
QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(),
|
|
ArgTys);
|
|
GetSuperClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SourceLocation(),
|
|
getSuperClassIdent,
|
|
getClassType, nullptr,
|
|
SC_Extern);
|
|
}
|
|
|
|
// SynthGetMetaClassFunctionDecl - Class objc_getMetaClass(const char *name);
|
|
void RewriteModernObjC::SynthGetMetaClassFunctionDecl() {
|
|
IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getMetaClass");
|
|
SmallVector<QualType, 16> ArgTys;
|
|
ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
|
|
QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(),
|
|
ArgTys);
|
|
GetMetaClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SourceLocation(),
|
|
getClassIdent, getClassType,
|
|
nullptr, SC_Extern);
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteObjCStringLiteral(ObjCStringLiteral *Exp) {
|
|
assert (Exp != nullptr && "Expected non-null ObjCStringLiteral");
|
|
QualType strType = getConstantStringStructType();
|
|
|
|
std::string S = "__NSConstantStringImpl_";
|
|
|
|
std::string tmpName = InFileName;
|
|
unsigned i;
|
|
for (i=0; i < tmpName.length(); i++) {
|
|
char c = tmpName.at(i);
|
|
// replace any non-alphanumeric characters with '_'.
|
|
if (!isAlphanumeric(c))
|
|
tmpName[i] = '_';
|
|
}
|
|
S += tmpName;
|
|
S += "_";
|
|
S += utostr(NumObjCStringLiterals++);
|
|
|
|
Preamble += "static __NSConstantStringImpl " + S;
|
|
Preamble += " __attribute__ ((section (\"__DATA, __cfstring\"))) = {__CFConstantStringClassReference,";
|
|
Preamble += "0x000007c8,"; // utf8_str
|
|
// The pretty printer for StringLiteral handles escape characters properly.
|
|
std::string prettyBufS;
|
|
llvm::raw_string_ostream prettyBuf(prettyBufS);
|
|
Exp->getString()->printPretty(prettyBuf, nullptr, PrintingPolicy(LangOpts));
|
|
Preamble += prettyBuf.str();
|
|
Preamble += ",";
|
|
Preamble += utostr(Exp->getString()->getByteLength()) + "};\n";
|
|
|
|
VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
|
|
SourceLocation(), &Context->Idents.get(S),
|
|
strType, nullptr, SC_Static);
|
|
DeclRefExpr *DRE = new (Context)
|
|
DeclRefExpr(*Context, NewVD, false, strType, VK_LValue, SourceLocation());
|
|
Expr *Unop = new (Context)
|
|
UnaryOperator(DRE, UO_AddrOf, Context->getPointerType(DRE->getType()),
|
|
VK_RValue, OK_Ordinary, SourceLocation(), false);
|
|
// cast to NSConstantString *
|
|
CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, Exp->getType(),
|
|
CK_CPointerToObjCPointerCast, Unop);
|
|
ReplaceStmt(Exp, cast);
|
|
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
|
|
return cast;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteObjCBoolLiteralExpr(ObjCBoolLiteralExpr *Exp) {
|
|
unsigned IntSize =
|
|
static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
|
|
|
|
Expr *FlagExp = IntegerLiteral::Create(*Context,
|
|
llvm::APInt(IntSize, Exp->getValue()),
|
|
Context->IntTy, Exp->getLocation());
|
|
CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, Context->ObjCBuiltinBoolTy,
|
|
CK_BitCast, FlagExp);
|
|
ParenExpr *PE = new (Context) ParenExpr(Exp->getLocation(), Exp->getExprLoc(),
|
|
cast);
|
|
ReplaceStmt(Exp, PE);
|
|
return PE;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteObjCBoxedExpr(ObjCBoxedExpr *Exp) {
|
|
// synthesize declaration of helper functions needed in this routine.
|
|
if (!SelGetUidFunctionDecl)
|
|
SynthSelGetUidFunctionDecl();
|
|
// use objc_msgSend() for all.
|
|
if (!MsgSendFunctionDecl)
|
|
SynthMsgSendFunctionDecl();
|
|
if (!GetClassFunctionDecl)
|
|
SynthGetClassFunctionDecl();
|
|
|
|
FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
|
|
SourceLocation StartLoc = Exp->getBeginLoc();
|
|
SourceLocation EndLoc = Exp->getEndLoc();
|
|
|
|
// Synthesize a call to objc_msgSend().
|
|
SmallVector<Expr*, 4> MsgExprs;
|
|
SmallVector<Expr*, 4> ClsExprs;
|
|
|
|
// Create a call to objc_getClass("<BoxingClass>"). It will be the 1st argument.
|
|
ObjCMethodDecl *BoxingMethod = Exp->getBoxingMethod();
|
|
ObjCInterfaceDecl *BoxingClass = BoxingMethod->getClassInterface();
|
|
|
|
IdentifierInfo *clsName = BoxingClass->getIdentifier();
|
|
ClsExprs.push_back(getStringLiteral(clsName->getName()));
|
|
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs,
|
|
StartLoc, EndLoc);
|
|
MsgExprs.push_back(Cls);
|
|
|
|
// Create a call to sel_registerName("<BoxingMethod>:"), etc.
|
|
// it will be the 2nd argument.
|
|
SmallVector<Expr*, 4> SelExprs;
|
|
SelExprs.push_back(
|
|
getStringLiteral(BoxingMethod->getSelector().getAsString()));
|
|
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
|
|
SelExprs, StartLoc, EndLoc);
|
|
MsgExprs.push_back(SelExp);
|
|
|
|
// User provided sub-expression is the 3rd, and last, argument.
|
|
Expr *subExpr = Exp->getSubExpr();
|
|
if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(subExpr)) {
|
|
QualType type = ICE->getType();
|
|
const Expr *SubExpr = ICE->IgnoreParenImpCasts();
|
|
CastKind CK = CK_BitCast;
|
|
if (SubExpr->getType()->isIntegralType(*Context) && type->isBooleanType())
|
|
CK = CK_IntegralToBoolean;
|
|
subExpr = NoTypeInfoCStyleCastExpr(Context, type, CK, subExpr);
|
|
}
|
|
MsgExprs.push_back(subExpr);
|
|
|
|
SmallVector<QualType, 4> ArgTypes;
|
|
ArgTypes.push_back(Context->getObjCClassType());
|
|
ArgTypes.push_back(Context->getObjCSelType());
|
|
for (const auto PI : BoxingMethod->parameters())
|
|
ArgTypes.push_back(PI->getType());
|
|
|
|
QualType returnType = Exp->getType();
|
|
// Get the type, we will need to reference it in a couple spots.
|
|
QualType msgSendType = MsgSendFlavor->getType();
|
|
|
|
// Create a reference to the objc_msgSend() declaration.
|
|
DeclRefExpr *DRE = new (Context) DeclRefExpr(
|
|
*Context, MsgSendFlavor, false, msgSendType, VK_LValue, SourceLocation());
|
|
|
|
CastExpr *cast = NoTypeInfoCStyleCastExpr(
|
|
Context, Context->getPointerType(Context->VoidTy), CK_BitCast, DRE);
|
|
|
|
// Now do the "normal" pointer to function cast.
|
|
QualType castType =
|
|
getSimpleFunctionType(returnType, ArgTypes, BoxingMethod->isVariadic());
|
|
castType = Context->getPointerType(castType);
|
|
cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
|
|
cast);
|
|
|
|
// Don't forget the parens to enforce the proper binding.
|
|
ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
|
|
|
|
const FunctionType *FT = msgSendType->getAs<FunctionType>();
|
|
CallExpr *CE = CallExpr::Create(*Context, PE, MsgExprs, FT->getReturnType(),
|
|
VK_RValue, EndLoc);
|
|
ReplaceStmt(Exp, CE);
|
|
return CE;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteObjCArrayLiteralExpr(ObjCArrayLiteral *Exp) {
|
|
// synthesize declaration of helper functions needed in this routine.
|
|
if (!SelGetUidFunctionDecl)
|
|
SynthSelGetUidFunctionDecl();
|
|
// use objc_msgSend() for all.
|
|
if (!MsgSendFunctionDecl)
|
|
SynthMsgSendFunctionDecl();
|
|
if (!GetClassFunctionDecl)
|
|
SynthGetClassFunctionDecl();
|
|
|
|
FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
|
|
SourceLocation StartLoc = Exp->getBeginLoc();
|
|
SourceLocation EndLoc = Exp->getEndLoc();
|
|
|
|
// Build the expression: __NSContainer_literal(int, ...).arr
|
|
QualType IntQT = Context->IntTy;
|
|
QualType NSArrayFType =
|
|
getSimpleFunctionType(Context->VoidTy, IntQT, true);
|
|
std::string NSArrayFName("__NSContainer_literal");
|
|
FunctionDecl *NSArrayFD = SynthBlockInitFunctionDecl(NSArrayFName);
|
|
DeclRefExpr *NSArrayDRE = new (Context) DeclRefExpr(
|
|
*Context, NSArrayFD, false, NSArrayFType, VK_RValue, SourceLocation());
|
|
|
|
SmallVector<Expr*, 16> InitExprs;
|
|
unsigned NumElements = Exp->getNumElements();
|
|
unsigned UnsignedIntSize =
|
|
static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
|
|
Expr *count = IntegerLiteral::Create(*Context,
|
|
llvm::APInt(UnsignedIntSize, NumElements),
|
|
Context->UnsignedIntTy, SourceLocation());
|
|
InitExprs.push_back(count);
|
|
for (unsigned i = 0; i < NumElements; i++)
|
|
InitExprs.push_back(Exp->getElement(i));
|
|
Expr *NSArrayCallExpr =
|
|
CallExpr::Create(*Context, NSArrayDRE, InitExprs, NSArrayFType, VK_LValue,
|
|
SourceLocation());
|
|
|
|
FieldDecl *ARRFD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
|
|
SourceLocation(),
|
|
&Context->Idents.get("arr"),
|
|
Context->getPointerType(Context->VoidPtrTy),
|
|
nullptr, /*BitWidth=*/nullptr,
|
|
/*Mutable=*/true, ICIS_NoInit);
|
|
MemberExpr *ArrayLiteralME =
|
|
MemberExpr::CreateImplicit(*Context, NSArrayCallExpr, false, ARRFD,
|
|
ARRFD->getType(), VK_LValue, OK_Ordinary);
|
|
QualType ConstIdT = Context->getObjCIdType().withConst();
|
|
CStyleCastExpr * ArrayLiteralObjects =
|
|
NoTypeInfoCStyleCastExpr(Context,
|
|
Context->getPointerType(ConstIdT),
|
|
CK_BitCast,
|
|
ArrayLiteralME);
|
|
|
|
// Synthesize a call to objc_msgSend().
|
|
SmallVector<Expr*, 32> MsgExprs;
|
|
SmallVector<Expr*, 4> ClsExprs;
|
|
QualType expType = Exp->getType();
|
|
|
|
// Create a call to objc_getClass("NSArray"). It will be th 1st argument.
|
|
ObjCInterfaceDecl *Class =
|
|
expType->getPointeeType()->getAs<ObjCObjectType>()->getInterface();
|
|
|
|
IdentifierInfo *clsName = Class->getIdentifier();
|
|
ClsExprs.push_back(getStringLiteral(clsName->getName()));
|
|
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs,
|
|
StartLoc, EndLoc);
|
|
MsgExprs.push_back(Cls);
|
|
|
|
// Create a call to sel_registerName("arrayWithObjects:count:").
|
|
// it will be the 2nd argument.
|
|
SmallVector<Expr*, 4> SelExprs;
|
|
ObjCMethodDecl *ArrayMethod = Exp->getArrayWithObjectsMethod();
|
|
SelExprs.push_back(
|
|
getStringLiteral(ArrayMethod->getSelector().getAsString()));
|
|
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
|
|
SelExprs, StartLoc, EndLoc);
|
|
MsgExprs.push_back(SelExp);
|
|
|
|
// (const id [])objects
|
|
MsgExprs.push_back(ArrayLiteralObjects);
|
|
|
|
// (NSUInteger)cnt
|
|
Expr *cnt = IntegerLiteral::Create(*Context,
|
|
llvm::APInt(UnsignedIntSize, NumElements),
|
|
Context->UnsignedIntTy, SourceLocation());
|
|
MsgExprs.push_back(cnt);
|
|
|
|
SmallVector<QualType, 4> ArgTypes;
|
|
ArgTypes.push_back(Context->getObjCClassType());
|
|
ArgTypes.push_back(Context->getObjCSelType());
|
|
for (const auto *PI : ArrayMethod->parameters())
|
|
ArgTypes.push_back(PI->getType());
|
|
|
|
QualType returnType = Exp->getType();
|
|
// Get the type, we will need to reference it in a couple spots.
|
|
QualType msgSendType = MsgSendFlavor->getType();
|
|
|
|
// Create a reference to the objc_msgSend() declaration.
|
|
DeclRefExpr *DRE = new (Context) DeclRefExpr(
|
|
*Context, MsgSendFlavor, false, msgSendType, VK_LValue, SourceLocation());
|
|
|
|
CastExpr *cast = NoTypeInfoCStyleCastExpr(
|
|
Context, Context->getPointerType(Context->VoidTy), CK_BitCast, DRE);
|
|
|
|
// Now do the "normal" pointer to function cast.
|
|
QualType castType =
|
|
getSimpleFunctionType(returnType, ArgTypes, ArrayMethod->isVariadic());
|
|
castType = Context->getPointerType(castType);
|
|
cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
|
|
cast);
|
|
|
|
// Don't forget the parens to enforce the proper binding.
|
|
ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
|
|
|
|
const FunctionType *FT = msgSendType->getAs<FunctionType>();
|
|
CallExpr *CE = CallExpr::Create(*Context, PE, MsgExprs, FT->getReturnType(),
|
|
VK_RValue, EndLoc);
|
|
ReplaceStmt(Exp, CE);
|
|
return CE;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteObjCDictionaryLiteralExpr(ObjCDictionaryLiteral *Exp) {
|
|
// synthesize declaration of helper functions needed in this routine.
|
|
if (!SelGetUidFunctionDecl)
|
|
SynthSelGetUidFunctionDecl();
|
|
// use objc_msgSend() for all.
|
|
if (!MsgSendFunctionDecl)
|
|
SynthMsgSendFunctionDecl();
|
|
if (!GetClassFunctionDecl)
|
|
SynthGetClassFunctionDecl();
|
|
|
|
FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
|
|
SourceLocation StartLoc = Exp->getBeginLoc();
|
|
SourceLocation EndLoc = Exp->getEndLoc();
|
|
|
|
// Build the expression: __NSContainer_literal(int, ...).arr
|
|
QualType IntQT = Context->IntTy;
|
|
QualType NSDictFType =
|
|
getSimpleFunctionType(Context->VoidTy, IntQT, true);
|
|
std::string NSDictFName("__NSContainer_literal");
|
|
FunctionDecl *NSDictFD = SynthBlockInitFunctionDecl(NSDictFName);
|
|
DeclRefExpr *NSDictDRE = new (Context) DeclRefExpr(
|
|
*Context, NSDictFD, false, NSDictFType, VK_RValue, SourceLocation());
|
|
|
|
SmallVector<Expr*, 16> KeyExprs;
|
|
SmallVector<Expr*, 16> ValueExprs;
|
|
|
|
unsigned NumElements = Exp->getNumElements();
|
|
unsigned UnsignedIntSize =
|
|
static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
|
|
Expr *count = IntegerLiteral::Create(*Context,
|
|
llvm::APInt(UnsignedIntSize, NumElements),
|
|
Context->UnsignedIntTy, SourceLocation());
|
|
KeyExprs.push_back(count);
|
|
ValueExprs.push_back(count);
|
|
for (unsigned i = 0; i < NumElements; i++) {
|
|
ObjCDictionaryElement Element = Exp->getKeyValueElement(i);
|
|
KeyExprs.push_back(Element.Key);
|
|
ValueExprs.push_back(Element.Value);
|
|
}
|
|
|
|
// (const id [])objects
|
|
Expr *NSValueCallExpr =
|
|
CallExpr::Create(*Context, NSDictDRE, ValueExprs, NSDictFType, VK_LValue,
|
|
SourceLocation());
|
|
|
|
FieldDecl *ARRFD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
|
|
SourceLocation(),
|
|
&Context->Idents.get("arr"),
|
|
Context->getPointerType(Context->VoidPtrTy),
|
|
nullptr, /*BitWidth=*/nullptr,
|
|
/*Mutable=*/true, ICIS_NoInit);
|
|
MemberExpr *DictLiteralValueME =
|
|
MemberExpr::CreateImplicit(*Context, NSValueCallExpr, false, ARRFD,
|
|
ARRFD->getType(), VK_LValue, OK_Ordinary);
|
|
QualType ConstIdT = Context->getObjCIdType().withConst();
|
|
CStyleCastExpr * DictValueObjects =
|
|
NoTypeInfoCStyleCastExpr(Context,
|
|
Context->getPointerType(ConstIdT),
|
|
CK_BitCast,
|
|
DictLiteralValueME);
|
|
// (const id <NSCopying> [])keys
|
|
Expr *NSKeyCallExpr = CallExpr::Create(
|
|
*Context, NSDictDRE, KeyExprs, NSDictFType, VK_LValue, SourceLocation());
|
|
|
|
MemberExpr *DictLiteralKeyME =
|
|
MemberExpr::CreateImplicit(*Context, NSKeyCallExpr, false, ARRFD,
|
|
ARRFD->getType(), VK_LValue, OK_Ordinary);
|
|
|
|
CStyleCastExpr * DictKeyObjects =
|
|
NoTypeInfoCStyleCastExpr(Context,
|
|
Context->getPointerType(ConstIdT),
|
|
CK_BitCast,
|
|
DictLiteralKeyME);
|
|
|
|
// Synthesize a call to objc_msgSend().
|
|
SmallVector<Expr*, 32> MsgExprs;
|
|
SmallVector<Expr*, 4> ClsExprs;
|
|
QualType expType = Exp->getType();
|
|
|
|
// Create a call to objc_getClass("NSArray"). It will be th 1st argument.
|
|
ObjCInterfaceDecl *Class =
|
|
expType->getPointeeType()->getAs<ObjCObjectType>()->getInterface();
|
|
|
|
IdentifierInfo *clsName = Class->getIdentifier();
|
|
ClsExprs.push_back(getStringLiteral(clsName->getName()));
|
|
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs,
|
|
StartLoc, EndLoc);
|
|
MsgExprs.push_back(Cls);
|
|
|
|
// Create a call to sel_registerName("arrayWithObjects:count:").
|
|
// it will be the 2nd argument.
|
|
SmallVector<Expr*, 4> SelExprs;
|
|
ObjCMethodDecl *DictMethod = Exp->getDictWithObjectsMethod();
|
|
SelExprs.push_back(getStringLiteral(DictMethod->getSelector().getAsString()));
|
|
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
|
|
SelExprs, StartLoc, EndLoc);
|
|
MsgExprs.push_back(SelExp);
|
|
|
|
// (const id [])objects
|
|
MsgExprs.push_back(DictValueObjects);
|
|
|
|
// (const id <NSCopying> [])keys
|
|
MsgExprs.push_back(DictKeyObjects);
|
|
|
|
// (NSUInteger)cnt
|
|
Expr *cnt = IntegerLiteral::Create(*Context,
|
|
llvm::APInt(UnsignedIntSize, NumElements),
|
|
Context->UnsignedIntTy, SourceLocation());
|
|
MsgExprs.push_back(cnt);
|
|
|
|
SmallVector<QualType, 8> ArgTypes;
|
|
ArgTypes.push_back(Context->getObjCClassType());
|
|
ArgTypes.push_back(Context->getObjCSelType());
|
|
for (const auto *PI : DictMethod->parameters()) {
|
|
QualType T = PI->getType();
|
|
if (const PointerType* PT = T->getAs<PointerType>()) {
|
|
QualType PointeeTy = PT->getPointeeType();
|
|
convertToUnqualifiedObjCType(PointeeTy);
|
|
T = Context->getPointerType(PointeeTy);
|
|
}
|
|
ArgTypes.push_back(T);
|
|
}
|
|
|
|
QualType returnType = Exp->getType();
|
|
// Get the type, we will need to reference it in a couple spots.
|
|
QualType msgSendType = MsgSendFlavor->getType();
|
|
|
|
// Create a reference to the objc_msgSend() declaration.
|
|
DeclRefExpr *DRE = new (Context) DeclRefExpr(
|
|
*Context, MsgSendFlavor, false, msgSendType, VK_LValue, SourceLocation());
|
|
|
|
CastExpr *cast = NoTypeInfoCStyleCastExpr(
|
|
Context, Context->getPointerType(Context->VoidTy), CK_BitCast, DRE);
|
|
|
|
// Now do the "normal" pointer to function cast.
|
|
QualType castType =
|
|
getSimpleFunctionType(returnType, ArgTypes, DictMethod->isVariadic());
|
|
castType = Context->getPointerType(castType);
|
|
cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
|
|
cast);
|
|
|
|
// Don't forget the parens to enforce the proper binding.
|
|
ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
|
|
|
|
const FunctionType *FT = msgSendType->getAs<FunctionType>();
|
|
CallExpr *CE = CallExpr::Create(*Context, PE, MsgExprs, FT->getReturnType(),
|
|
VK_RValue, EndLoc);
|
|
ReplaceStmt(Exp, CE);
|
|
return CE;
|
|
}
|
|
|
|
// struct __rw_objc_super {
|
|
// struct objc_object *object; struct objc_object *superClass;
|
|
// };
|
|
QualType RewriteModernObjC::getSuperStructType() {
|
|
if (!SuperStructDecl) {
|
|
SuperStructDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
|
|
SourceLocation(), SourceLocation(),
|
|
&Context->Idents.get("__rw_objc_super"));
|
|
QualType FieldTypes[2];
|
|
|
|
// struct objc_object *object;
|
|
FieldTypes[0] = Context->getObjCIdType();
|
|
// struct objc_object *superClass;
|
|
FieldTypes[1] = Context->getObjCIdType();
|
|
|
|
// Create fields
|
|
for (unsigned i = 0; i < 2; ++i) {
|
|
SuperStructDecl->addDecl(FieldDecl::Create(*Context, SuperStructDecl,
|
|
SourceLocation(),
|
|
SourceLocation(), nullptr,
|
|
FieldTypes[i], nullptr,
|
|
/*BitWidth=*/nullptr,
|
|
/*Mutable=*/false,
|
|
ICIS_NoInit));
|
|
}
|
|
|
|
SuperStructDecl->completeDefinition();
|
|
}
|
|
return Context->getTagDeclType(SuperStructDecl);
|
|
}
|
|
|
|
QualType RewriteModernObjC::getConstantStringStructType() {
|
|
if (!ConstantStringDecl) {
|
|
ConstantStringDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
|
|
SourceLocation(), SourceLocation(),
|
|
&Context->Idents.get("__NSConstantStringImpl"));
|
|
QualType FieldTypes[4];
|
|
|
|
// struct objc_object *receiver;
|
|
FieldTypes[0] = Context->getObjCIdType();
|
|
// int flags;
|
|
FieldTypes[1] = Context->IntTy;
|
|
// char *str;
|
|
FieldTypes[2] = Context->getPointerType(Context->CharTy);
|
|
// long length;
|
|
FieldTypes[3] = Context->LongTy;
|
|
|
|
// Create fields
|
|
for (unsigned i = 0; i < 4; ++i) {
|
|
ConstantStringDecl->addDecl(FieldDecl::Create(*Context,
|
|
ConstantStringDecl,
|
|
SourceLocation(),
|
|
SourceLocation(), nullptr,
|
|
FieldTypes[i], nullptr,
|
|
/*BitWidth=*/nullptr,
|
|
/*Mutable=*/true,
|
|
ICIS_NoInit));
|
|
}
|
|
|
|
ConstantStringDecl->completeDefinition();
|
|
}
|
|
return Context->getTagDeclType(ConstantStringDecl);
|
|
}
|
|
|
|
/// getFunctionSourceLocation - returns start location of a function
|
|
/// definition. Complication arises when function has declared as
|
|
/// extern "C" or extern "C" {...}
|
|
static SourceLocation getFunctionSourceLocation (RewriteModernObjC &R,
|
|
FunctionDecl *FD) {
|
|
if (FD->isExternC() && !FD->isMain()) {
|
|
const DeclContext *DC = FD->getDeclContext();
|
|
if (const LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(DC))
|
|
// if it is extern "C" {...}, return function decl's own location.
|
|
if (!LSD->getRBraceLoc().isValid())
|
|
return LSD->getExternLoc();
|
|
}
|
|
if (FD->getStorageClass() != SC_None)
|
|
R.RewriteBlockLiteralFunctionDecl(FD);
|
|
return FD->getTypeSpecStartLoc();
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteLineDirective(const Decl *D) {
|
|
|
|
SourceLocation Location = D->getLocation();
|
|
|
|
if (Location.isFileID() && GenerateLineInfo) {
|
|
std::string LineString("\n#line ");
|
|
PresumedLoc PLoc = SM->getPresumedLoc(Location);
|
|
LineString += utostr(PLoc.getLine());
|
|
LineString += " \"";
|
|
LineString += Lexer::Stringify(PLoc.getFilename());
|
|
if (isa<ObjCMethodDecl>(D))
|
|
LineString += "\"";
|
|
else LineString += "\"\n";
|
|
|
|
Location = D->getBeginLoc();
|
|
if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
|
|
if (FD->isExternC() && !FD->isMain()) {
|
|
const DeclContext *DC = FD->getDeclContext();
|
|
if (const LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(DC))
|
|
// if it is extern "C" {...}, return function decl's own location.
|
|
if (!LSD->getRBraceLoc().isValid())
|
|
Location = LSD->getExternLoc();
|
|
}
|
|
}
|
|
InsertText(Location, LineString);
|
|
}
|
|
}
|
|
|
|
/// SynthMsgSendStretCallExpr - This routine translates message expression
|
|
/// into a call to objc_msgSend_stret() entry point. Tricky part is that
|
|
/// nil check on receiver must be performed before calling objc_msgSend_stret.
|
|
/// MsgSendStretFlavor - function declaration objc_msgSend_stret(...)
|
|
/// msgSendType - function type of objc_msgSend_stret(...)
|
|
/// returnType - Result type of the method being synthesized.
|
|
/// ArgTypes - type of the arguments passed to objc_msgSend_stret, starting with receiver type.
|
|
/// MsgExprs - list of argument expressions being passed to objc_msgSend_stret,
|
|
/// starting with receiver.
|
|
/// Method - Method being rewritten.
|
|
Expr *RewriteModernObjC::SynthMsgSendStretCallExpr(FunctionDecl *MsgSendStretFlavor,
|
|
QualType returnType,
|
|
SmallVectorImpl<QualType> &ArgTypes,
|
|
SmallVectorImpl<Expr*> &MsgExprs,
|
|
ObjCMethodDecl *Method) {
|
|
// Now do the "normal" pointer to function cast.
|
|
QualType FuncType = getSimpleFunctionType(
|
|
returnType, ArgTypes, Method ? Method->isVariadic() : false);
|
|
QualType castType = Context->getPointerType(FuncType);
|
|
|
|
// build type for containing the objc_msgSend_stret object.
|
|
static unsigned stretCount=0;
|
|
std::string name = "__Stret"; name += utostr(stretCount);
|
|
std::string str =
|
|
"extern \"C\" void * __cdecl memset(void *_Dst, int _Val, size_t _Size);\n";
|
|
str += "namespace {\n";
|
|
str += "struct "; str += name;
|
|
str += " {\n\t";
|
|
str += name;
|
|
str += "(id receiver, SEL sel";
|
|
for (unsigned i = 2; i < ArgTypes.size(); i++) {
|
|
std::string ArgName = "arg"; ArgName += utostr(i);
|
|
ArgTypes[i].getAsStringInternal(ArgName, Context->getPrintingPolicy());
|
|
str += ", "; str += ArgName;
|
|
}
|
|
// could be vararg.
|
|
for (unsigned i = ArgTypes.size(); i < MsgExprs.size(); i++) {
|
|
std::string ArgName = "arg"; ArgName += utostr(i);
|
|
MsgExprs[i]->getType().getAsStringInternal(ArgName,
|
|
Context->getPrintingPolicy());
|
|
str += ", "; str += ArgName;
|
|
}
|
|
|
|
str += ") {\n";
|
|
str += "\t unsigned size = sizeof(";
|
|
str += returnType.getAsString(Context->getPrintingPolicy()); str += ");\n";
|
|
|
|
str += "\t if (size == 1 || size == 2 || size == 4 || size == 8)\n";
|
|
|
|
str += "\t s = (("; str += castType.getAsString(Context->getPrintingPolicy());
|
|
str += ")(void *)objc_msgSend)(receiver, sel";
|
|
for (unsigned i = 2; i < ArgTypes.size(); i++) {
|
|
str += ", arg"; str += utostr(i);
|
|
}
|
|
// could be vararg.
|
|
for (unsigned i = ArgTypes.size(); i < MsgExprs.size(); i++) {
|
|
str += ", arg"; str += utostr(i);
|
|
}
|
|
str+= ");\n";
|
|
|
|
str += "\t else if (receiver == 0)\n";
|
|
str += "\t memset((void*)&s, 0, sizeof(s));\n";
|
|
str += "\t else\n";
|
|
|
|
str += "\t s = (("; str += castType.getAsString(Context->getPrintingPolicy());
|
|
str += ")(void *)objc_msgSend_stret)(receiver, sel";
|
|
for (unsigned i = 2; i < ArgTypes.size(); i++) {
|
|
str += ", arg"; str += utostr(i);
|
|
}
|
|
// could be vararg.
|
|
for (unsigned i = ArgTypes.size(); i < MsgExprs.size(); i++) {
|
|
str += ", arg"; str += utostr(i);
|
|
}
|
|
str += ");\n";
|
|
|
|
str += "\t}\n";
|
|
str += "\t"; str += returnType.getAsString(Context->getPrintingPolicy());
|
|
str += " s;\n";
|
|
str += "};\n};\n\n";
|
|
SourceLocation FunLocStart;
|
|
if (CurFunctionDef)
|
|
FunLocStart = getFunctionSourceLocation(*this, CurFunctionDef);
|
|
else {
|
|
assert(CurMethodDef && "SynthMsgSendStretCallExpr - CurMethodDef is null");
|
|
FunLocStart = CurMethodDef->getBeginLoc();
|
|
}
|
|
|
|
InsertText(FunLocStart, str);
|
|
++stretCount;
|
|
|
|
// AST for __Stretn(receiver, args).s;
|
|
IdentifierInfo *ID = &Context->Idents.get(name);
|
|
FunctionDecl *FD =
|
|
FunctionDecl::Create(*Context, TUDecl, SourceLocation(), SourceLocation(),
|
|
ID, FuncType, nullptr, SC_Extern, false, false);
|
|
DeclRefExpr *DRE = new (Context)
|
|
DeclRefExpr(*Context, FD, false, castType, VK_RValue, SourceLocation());
|
|
CallExpr *STCE = CallExpr::Create(*Context, DRE, MsgExprs, castType,
|
|
VK_LValue, SourceLocation());
|
|
|
|
FieldDecl *FieldD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
|
|
SourceLocation(),
|
|
&Context->Idents.get("s"),
|
|
returnType, nullptr,
|
|
/*BitWidth=*/nullptr,
|
|
/*Mutable=*/true, ICIS_NoInit);
|
|
MemberExpr *ME = MemberExpr::CreateImplicit(
|
|
*Context, STCE, false, FieldD, FieldD->getType(), VK_LValue, OK_Ordinary);
|
|
|
|
return ME;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::SynthMessageExpr(ObjCMessageExpr *Exp,
|
|
SourceLocation StartLoc,
|
|
SourceLocation EndLoc) {
|
|
if (!SelGetUidFunctionDecl)
|
|
SynthSelGetUidFunctionDecl();
|
|
if (!MsgSendFunctionDecl)
|
|
SynthMsgSendFunctionDecl();
|
|
if (!MsgSendSuperFunctionDecl)
|
|
SynthMsgSendSuperFunctionDecl();
|
|
if (!MsgSendStretFunctionDecl)
|
|
SynthMsgSendStretFunctionDecl();
|
|
if (!MsgSendSuperStretFunctionDecl)
|
|
SynthMsgSendSuperStretFunctionDecl();
|
|
if (!MsgSendFpretFunctionDecl)
|
|
SynthMsgSendFpretFunctionDecl();
|
|
if (!GetClassFunctionDecl)
|
|
SynthGetClassFunctionDecl();
|
|
if (!GetSuperClassFunctionDecl)
|
|
SynthGetSuperClassFunctionDecl();
|
|
if (!GetMetaClassFunctionDecl)
|
|
SynthGetMetaClassFunctionDecl();
|
|
|
|
// default to objc_msgSend().
|
|
FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
|
|
// May need to use objc_msgSend_stret() as well.
|
|
FunctionDecl *MsgSendStretFlavor = nullptr;
|
|
if (ObjCMethodDecl *mDecl = Exp->getMethodDecl()) {
|
|
QualType resultType = mDecl->getReturnType();
|
|
if (resultType->isRecordType())
|
|
MsgSendStretFlavor = MsgSendStretFunctionDecl;
|
|
else if (resultType->isRealFloatingType())
|
|
MsgSendFlavor = MsgSendFpretFunctionDecl;
|
|
}
|
|
|
|
// Synthesize a call to objc_msgSend().
|
|
SmallVector<Expr*, 8> MsgExprs;
|
|
switch (Exp->getReceiverKind()) {
|
|
case ObjCMessageExpr::SuperClass: {
|
|
MsgSendFlavor = MsgSendSuperFunctionDecl;
|
|
if (MsgSendStretFlavor)
|
|
MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
|
|
assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
|
|
|
|
ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface();
|
|
|
|
SmallVector<Expr*, 4> InitExprs;
|
|
|
|
// set the receiver to self, the first argument to all methods.
|
|
InitExprs.push_back(
|
|
NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
|
|
CK_BitCast,
|
|
new (Context) DeclRefExpr(*Context,
|
|
CurMethodDef->getSelfDecl(),
|
|
false,
|
|
Context->getObjCIdType(),
|
|
VK_RValue,
|
|
SourceLocation()))
|
|
); // set the 'receiver'.
|
|
|
|
// (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
|
|
SmallVector<Expr*, 8> ClsExprs;
|
|
ClsExprs.push_back(getStringLiteral(ClassDecl->getIdentifier()->getName()));
|
|
// (Class)objc_getClass("CurrentClass")
|
|
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetMetaClassFunctionDecl,
|
|
ClsExprs, StartLoc, EndLoc);
|
|
ClsExprs.clear();
|
|
ClsExprs.push_back(Cls);
|
|
Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl, ClsExprs,
|
|
StartLoc, EndLoc);
|
|
|
|
// (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
|
|
// To turn off a warning, type-cast to 'id'
|
|
InitExprs.push_back( // set 'super class', using class_getSuperclass().
|
|
NoTypeInfoCStyleCastExpr(Context,
|
|
Context->getObjCIdType(),
|
|
CK_BitCast, Cls));
|
|
// struct __rw_objc_super
|
|
QualType superType = getSuperStructType();
|
|
Expr *SuperRep;
|
|
|
|
if (LangOpts.MicrosoftExt) {
|
|
SynthSuperConstructorFunctionDecl();
|
|
// Simulate a constructor call...
|
|
DeclRefExpr *DRE = new (Context)
|
|
DeclRefExpr(*Context, SuperConstructorFunctionDecl, false, superType,
|
|
VK_LValue, SourceLocation());
|
|
SuperRep = CallExpr::Create(*Context, DRE, InitExprs, superType,
|
|
VK_LValue, SourceLocation());
|
|
// The code for super is a little tricky to prevent collision with
|
|
// the structure definition in the header. The rewriter has it's own
|
|
// internal definition (__rw_objc_super) that is uses. This is why
|
|
// we need the cast below. For example:
|
|
// (struct __rw_objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
|
|
//
|
|
SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
|
|
Context->getPointerType(SuperRep->getType()),
|
|
VK_RValue, OK_Ordinary,
|
|
SourceLocation(), false);
|
|
SuperRep = NoTypeInfoCStyleCastExpr(Context,
|
|
Context->getPointerType(superType),
|
|
CK_BitCast, SuperRep);
|
|
} else {
|
|
// (struct __rw_objc_super) { <exprs from above> }
|
|
InitListExpr *ILE =
|
|
new (Context) InitListExpr(*Context, SourceLocation(), InitExprs,
|
|
SourceLocation());
|
|
TypeSourceInfo *superTInfo
|
|
= Context->getTrivialTypeSourceInfo(superType);
|
|
SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
|
|
superType, VK_LValue,
|
|
ILE, false);
|
|
// struct __rw_objc_super *
|
|
SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
|
|
Context->getPointerType(SuperRep->getType()),
|
|
VK_RValue, OK_Ordinary,
|
|
SourceLocation(), false);
|
|
}
|
|
MsgExprs.push_back(SuperRep);
|
|
break;
|
|
}
|
|
|
|
case ObjCMessageExpr::Class: {
|
|
SmallVector<Expr*, 8> ClsExprs;
|
|
ObjCInterfaceDecl *Class
|
|
= Exp->getClassReceiver()->getAs<ObjCObjectType>()->getInterface();
|
|
IdentifierInfo *clsName = Class->getIdentifier();
|
|
ClsExprs.push_back(getStringLiteral(clsName->getName()));
|
|
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs,
|
|
StartLoc, EndLoc);
|
|
CastExpr *ArgExpr = NoTypeInfoCStyleCastExpr(Context,
|
|
Context->getObjCIdType(),
|
|
CK_BitCast, Cls);
|
|
MsgExprs.push_back(ArgExpr);
|
|
break;
|
|
}
|
|
|
|
case ObjCMessageExpr::SuperInstance:{
|
|
MsgSendFlavor = MsgSendSuperFunctionDecl;
|
|
if (MsgSendStretFlavor)
|
|
MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
|
|
assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
|
|
ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface();
|
|
SmallVector<Expr*, 4> InitExprs;
|
|
|
|
InitExprs.push_back(
|
|
NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
|
|
CK_BitCast,
|
|
new (Context) DeclRefExpr(*Context,
|
|
CurMethodDef->getSelfDecl(),
|
|
false,
|
|
Context->getObjCIdType(),
|
|
VK_RValue, SourceLocation()))
|
|
); // set the 'receiver'.
|
|
|
|
// (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
|
|
SmallVector<Expr*, 8> ClsExprs;
|
|
ClsExprs.push_back(getStringLiteral(ClassDecl->getIdentifier()->getName()));
|
|
// (Class)objc_getClass("CurrentClass")
|
|
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs,
|
|
StartLoc, EndLoc);
|
|
ClsExprs.clear();
|
|
ClsExprs.push_back(Cls);
|
|
Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl, ClsExprs,
|
|
StartLoc, EndLoc);
|
|
|
|
// (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
|
|
// To turn off a warning, type-cast to 'id'
|
|
InitExprs.push_back(
|
|
// set 'super class', using class_getSuperclass().
|
|
NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
|
|
CK_BitCast, Cls));
|
|
// struct __rw_objc_super
|
|
QualType superType = getSuperStructType();
|
|
Expr *SuperRep;
|
|
|
|
if (LangOpts.MicrosoftExt) {
|
|
SynthSuperConstructorFunctionDecl();
|
|
// Simulate a constructor call...
|
|
DeclRefExpr *DRE = new (Context)
|
|
DeclRefExpr(*Context, SuperConstructorFunctionDecl, false, superType,
|
|
VK_LValue, SourceLocation());
|
|
SuperRep = CallExpr::Create(*Context, DRE, InitExprs, superType,
|
|
VK_LValue, SourceLocation());
|
|
// The code for super is a little tricky to prevent collision with
|
|
// the structure definition in the header. The rewriter has it's own
|
|
// internal definition (__rw_objc_super) that is uses. This is why
|
|
// we need the cast below. For example:
|
|
// (struct __rw_objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
|
|
//
|
|
SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
|
|
Context->getPointerType(SuperRep->getType()),
|
|
VK_RValue, OK_Ordinary,
|
|
SourceLocation(), false);
|
|
SuperRep = NoTypeInfoCStyleCastExpr(Context,
|
|
Context->getPointerType(superType),
|
|
CK_BitCast, SuperRep);
|
|
} else {
|
|
// (struct __rw_objc_super) { <exprs from above> }
|
|
InitListExpr *ILE =
|
|
new (Context) InitListExpr(*Context, SourceLocation(), InitExprs,
|
|
SourceLocation());
|
|
TypeSourceInfo *superTInfo
|
|
= Context->getTrivialTypeSourceInfo(superType);
|
|
SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
|
|
superType, VK_RValue, ILE,
|
|
false);
|
|
}
|
|
MsgExprs.push_back(SuperRep);
|
|
break;
|
|
}
|
|
|
|
case ObjCMessageExpr::Instance: {
|
|
// Remove all type-casts because it may contain objc-style types; e.g.
|
|
// Foo<Proto> *.
|
|
Expr *recExpr = Exp->getInstanceReceiver();
|
|
while (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(recExpr))
|
|
recExpr = CE->getSubExpr();
|
|
CastKind CK = recExpr->getType()->isObjCObjectPointerType()
|
|
? CK_BitCast : recExpr->getType()->isBlockPointerType()
|
|
? CK_BlockPointerToObjCPointerCast
|
|
: CK_CPointerToObjCPointerCast;
|
|
|
|
recExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
|
|
CK, recExpr);
|
|
MsgExprs.push_back(recExpr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Create a call to sel_registerName("selName"), it will be the 2nd argument.
|
|
SmallVector<Expr*, 8> SelExprs;
|
|
SelExprs.push_back(getStringLiteral(Exp->getSelector().getAsString()));
|
|
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
|
|
SelExprs, StartLoc, EndLoc);
|
|
MsgExprs.push_back(SelExp);
|
|
|
|
// Now push any user supplied arguments.
|
|
for (unsigned i = 0; i < Exp->getNumArgs(); i++) {
|
|
Expr *userExpr = Exp->getArg(i);
|
|
// Make all implicit casts explicit...ICE comes in handy:-)
|
|
if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(userExpr)) {
|
|
// Reuse the ICE type, it is exactly what the doctor ordered.
|
|
QualType type = ICE->getType();
|
|
if (needToScanForQualifiers(type))
|
|
type = Context->getObjCIdType();
|
|
// Make sure we convert "type (^)(...)" to "type (*)(...)".
|
|
(void)convertBlockPointerToFunctionPointer(type);
|
|
const Expr *SubExpr = ICE->IgnoreParenImpCasts();
|
|
CastKind CK;
|
|
if (SubExpr->getType()->isIntegralType(*Context) &&
|
|
type->isBooleanType()) {
|
|
CK = CK_IntegralToBoolean;
|
|
} else if (type->isObjCObjectPointerType()) {
|
|
if (SubExpr->getType()->isBlockPointerType()) {
|
|
CK = CK_BlockPointerToObjCPointerCast;
|
|
} else if (SubExpr->getType()->isPointerType()) {
|
|
CK = CK_CPointerToObjCPointerCast;
|
|
} else {
|
|
CK = CK_BitCast;
|
|
}
|
|
} else {
|
|
CK = CK_BitCast;
|
|
}
|
|
|
|
userExpr = NoTypeInfoCStyleCastExpr(Context, type, CK, userExpr);
|
|
}
|
|
// Make id<P...> cast into an 'id' cast.
|
|
else if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(userExpr)) {
|
|
if (CE->getType()->isObjCQualifiedIdType()) {
|
|
while ((CE = dyn_cast<CStyleCastExpr>(userExpr)))
|
|
userExpr = CE->getSubExpr();
|
|
CastKind CK;
|
|
if (userExpr->getType()->isIntegralType(*Context)) {
|
|
CK = CK_IntegralToPointer;
|
|
} else if (userExpr->getType()->isBlockPointerType()) {
|
|
CK = CK_BlockPointerToObjCPointerCast;
|
|
} else if (userExpr->getType()->isPointerType()) {
|
|
CK = CK_CPointerToObjCPointerCast;
|
|
} else {
|
|
CK = CK_BitCast;
|
|
}
|
|
userExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
|
|
CK, userExpr);
|
|
}
|
|
}
|
|
MsgExprs.push_back(userExpr);
|
|
// We've transferred the ownership to MsgExprs. For now, we *don't* null
|
|
// out the argument in the original expression (since we aren't deleting
|
|
// the ObjCMessageExpr). See RewritePropertyOrImplicitSetter() usage for more info.
|
|
//Exp->setArg(i, 0);
|
|
}
|
|
// Generate the funky cast.
|
|
CastExpr *cast;
|
|
SmallVector<QualType, 8> ArgTypes;
|
|
QualType returnType;
|
|
|
|
// Push 'id' and 'SEL', the 2 implicit arguments.
|
|
if (MsgSendFlavor == MsgSendSuperFunctionDecl)
|
|
ArgTypes.push_back(Context->getPointerType(getSuperStructType()));
|
|
else
|
|
ArgTypes.push_back(Context->getObjCIdType());
|
|
ArgTypes.push_back(Context->getObjCSelType());
|
|
if (ObjCMethodDecl *OMD = Exp->getMethodDecl()) {
|
|
// Push any user argument types.
|
|
for (const auto *PI : OMD->parameters()) {
|
|
QualType t = PI->getType()->isObjCQualifiedIdType()
|
|
? Context->getObjCIdType()
|
|
: PI->getType();
|
|
// Make sure we convert "t (^)(...)" to "t (*)(...)".
|
|
(void)convertBlockPointerToFunctionPointer(t);
|
|
ArgTypes.push_back(t);
|
|
}
|
|
returnType = Exp->getType();
|
|
convertToUnqualifiedObjCType(returnType);
|
|
(void)convertBlockPointerToFunctionPointer(returnType);
|
|
} else {
|
|
returnType = Context->getObjCIdType();
|
|
}
|
|
// Get the type, we will need to reference it in a couple spots.
|
|
QualType msgSendType = MsgSendFlavor->getType();
|
|
|
|
// Create a reference to the objc_msgSend() declaration.
|
|
DeclRefExpr *DRE = new (Context) DeclRefExpr(
|
|
*Context, MsgSendFlavor, false, msgSendType, VK_LValue, SourceLocation());
|
|
|
|
// Need to cast objc_msgSend to "void *" (to workaround a GCC bandaid).
|
|
// If we don't do this cast, we get the following bizarre warning/note:
|
|
// xx.m:13: warning: function called through a non-compatible type
|
|
// xx.m:13: note: if this code is reached, the program will abort
|
|
cast = NoTypeInfoCStyleCastExpr(Context,
|
|
Context->getPointerType(Context->VoidTy),
|
|
CK_BitCast, DRE);
|
|
|
|
// Now do the "normal" pointer to function cast.
|
|
// If we don't have a method decl, force a variadic cast.
|
|
const ObjCMethodDecl *MD = Exp->getMethodDecl();
|
|
QualType castType =
|
|
getSimpleFunctionType(returnType, ArgTypes, MD ? MD->isVariadic() : true);
|
|
castType = Context->getPointerType(castType);
|
|
cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
|
|
cast);
|
|
|
|
// Don't forget the parens to enforce the proper binding.
|
|
ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
|
|
|
|
const FunctionType *FT = msgSendType->getAs<FunctionType>();
|
|
CallExpr *CE = CallExpr::Create(*Context, PE, MsgExprs, FT->getReturnType(),
|
|
VK_RValue, EndLoc);
|
|
Stmt *ReplacingStmt = CE;
|
|
if (MsgSendStretFlavor) {
|
|
// We have the method which returns a struct/union. Must also generate
|
|
// call to objc_msgSend_stret and hang both varieties on a conditional
|
|
// expression which dictate which one to envoke depending on size of
|
|
// method's return type.
|
|
|
|
Expr *STCE = SynthMsgSendStretCallExpr(MsgSendStretFlavor,
|
|
returnType,
|
|
ArgTypes, MsgExprs,
|
|
Exp->getMethodDecl());
|
|
ReplacingStmt = STCE;
|
|
}
|
|
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
|
|
return ReplacingStmt;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteMessageExpr(ObjCMessageExpr *Exp) {
|
|
Stmt *ReplacingStmt =
|
|
SynthMessageExpr(Exp, Exp->getBeginLoc(), Exp->getEndLoc());
|
|
|
|
// Now do the actual rewrite.
|
|
ReplaceStmt(Exp, ReplacingStmt);
|
|
|
|
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
|
|
return ReplacingStmt;
|
|
}
|
|
|
|
// typedef struct objc_object Protocol;
|
|
QualType RewriteModernObjC::getProtocolType() {
|
|
if (!ProtocolTypeDecl) {
|
|
TypeSourceInfo *TInfo
|
|
= Context->getTrivialTypeSourceInfo(Context->getObjCIdType());
|
|
ProtocolTypeDecl = TypedefDecl::Create(*Context, TUDecl,
|
|
SourceLocation(), SourceLocation(),
|
|
&Context->Idents.get("Protocol"),
|
|
TInfo);
|
|
}
|
|
return Context->getTypeDeclType(ProtocolTypeDecl);
|
|
}
|
|
|
|
/// RewriteObjCProtocolExpr - Rewrite a protocol expression into
|
|
/// a synthesized/forward data reference (to the protocol's metadata).
|
|
/// The forward references (and metadata) are generated in
|
|
/// RewriteModernObjC::HandleTranslationUnit().
|
|
Stmt *RewriteModernObjC::RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp) {
|
|
std::string Name = "_OBJC_PROTOCOL_REFERENCE_$_" +
|
|
Exp->getProtocol()->getNameAsString();
|
|
IdentifierInfo *ID = &Context->Idents.get(Name);
|
|
VarDecl *VD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
|
|
SourceLocation(), ID, getProtocolType(),
|
|
nullptr, SC_Extern);
|
|
DeclRefExpr *DRE = new (Context) DeclRefExpr(
|
|
*Context, VD, false, getProtocolType(), VK_LValue, SourceLocation());
|
|
CastExpr *castExpr = NoTypeInfoCStyleCastExpr(
|
|
Context, Context->getPointerType(DRE->getType()), CK_BitCast, DRE);
|
|
ReplaceStmt(Exp, castExpr);
|
|
ProtocolExprDecls.insert(Exp->getProtocol()->getCanonicalDecl());
|
|
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
|
|
return castExpr;
|
|
}
|
|
|
|
/// IsTagDefinedInsideClass - This routine checks that a named tagged type
|
|
/// is defined inside an objective-c class. If so, it returns true.
|
|
bool RewriteModernObjC::IsTagDefinedInsideClass(ObjCContainerDecl *IDecl,
|
|
TagDecl *Tag,
|
|
bool &IsNamedDefinition) {
|
|
if (!IDecl)
|
|
return false;
|
|
SourceLocation TagLocation;
|
|
if (RecordDecl *RD = dyn_cast<RecordDecl>(Tag)) {
|
|
RD = RD->getDefinition();
|
|
if (!RD || !RD->getDeclName().getAsIdentifierInfo())
|
|
return false;
|
|
IsNamedDefinition = true;
|
|
TagLocation = RD->getLocation();
|
|
return Context->getSourceManager().isBeforeInTranslationUnit(
|
|
IDecl->getLocation(), TagLocation);
|
|
}
|
|
if (EnumDecl *ED = dyn_cast<EnumDecl>(Tag)) {
|
|
if (!ED || !ED->getDeclName().getAsIdentifierInfo())
|
|
return false;
|
|
IsNamedDefinition = true;
|
|
TagLocation = ED->getLocation();
|
|
return Context->getSourceManager().isBeforeInTranslationUnit(
|
|
IDecl->getLocation(), TagLocation);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// RewriteObjCFieldDeclType - This routine rewrites a type into the buffer.
|
|
/// It handles elaborated types, as well as enum types in the process.
|
|
bool RewriteModernObjC::RewriteObjCFieldDeclType(QualType &Type,
|
|
std::string &Result) {
|
|
if (isa<TypedefType>(Type)) {
|
|
Result += "\t";
|
|
return false;
|
|
}
|
|
|
|
if (Type->isArrayType()) {
|
|
QualType ElemTy = Context->getBaseElementType(Type);
|
|
return RewriteObjCFieldDeclType(ElemTy, Result);
|
|
}
|
|
else if (Type->isRecordType()) {
|
|
RecordDecl *RD = Type->getAs<RecordType>()->getDecl();
|
|
if (RD->isCompleteDefinition()) {
|
|
if (RD->isStruct())
|
|
Result += "\n\tstruct ";
|
|
else if (RD->isUnion())
|
|
Result += "\n\tunion ";
|
|
else
|
|
assert(false && "class not allowed as an ivar type");
|
|
|
|
Result += RD->getName();
|
|
if (GlobalDefinedTags.count(RD)) {
|
|
// struct/union is defined globally, use it.
|
|
Result += " ";
|
|
return true;
|
|
}
|
|
Result += " {\n";
|
|
for (auto *FD : RD->fields())
|
|
RewriteObjCFieldDecl(FD, Result);
|
|
Result += "\t} ";
|
|
return true;
|
|
}
|
|
}
|
|
else if (Type->isEnumeralType()) {
|
|
EnumDecl *ED = Type->getAs<EnumType>()->getDecl();
|
|
if (ED->isCompleteDefinition()) {
|
|
Result += "\n\tenum ";
|
|
Result += ED->getName();
|
|
if (GlobalDefinedTags.count(ED)) {
|
|
// Enum is globall defined, use it.
|
|
Result += " ";
|
|
return true;
|
|
}
|
|
|
|
Result += " {\n";
|
|
for (const auto *EC : ED->enumerators()) {
|
|
Result += "\t"; Result += EC->getName(); Result += " = ";
|
|
llvm::APSInt Val = EC->getInitVal();
|
|
Result += Val.toString(10);
|
|
Result += ",\n";
|
|
}
|
|
Result += "\t} ";
|
|
return true;
|
|
}
|
|
}
|
|
|
|
Result += "\t";
|
|
convertObjCTypeToCStyleType(Type);
|
|
return false;
|
|
}
|
|
|
|
|
|
/// RewriteObjCFieldDecl - This routine rewrites a field into the buffer.
|
|
/// It handles elaborated types, as well as enum types in the process.
|
|
void RewriteModernObjC::RewriteObjCFieldDecl(FieldDecl *fieldDecl,
|
|
std::string &Result) {
|
|
QualType Type = fieldDecl->getType();
|
|
std::string Name = fieldDecl->getNameAsString();
|
|
|
|
bool EleboratedType = RewriteObjCFieldDeclType(Type, Result);
|
|
if (!EleboratedType)
|
|
Type.getAsStringInternal(Name, Context->getPrintingPolicy());
|
|
Result += Name;
|
|
if (fieldDecl->isBitField()) {
|
|
Result += " : "; Result += utostr(fieldDecl->getBitWidthValue(*Context));
|
|
}
|
|
else if (EleboratedType && Type->isArrayType()) {
|
|
const ArrayType *AT = Context->getAsArrayType(Type);
|
|
do {
|
|
if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(AT)) {
|
|
Result += "[";
|
|
llvm::APInt Dim = CAT->getSize();
|
|
Result += utostr(Dim.getZExtValue());
|
|
Result += "]";
|
|
}
|
|
AT = Context->getAsArrayType(AT->getElementType());
|
|
} while (AT);
|
|
}
|
|
|
|
Result += ";\n";
|
|
}
|
|
|
|
/// RewriteLocallyDefinedNamedAggregates - This routine rewrites locally defined
|
|
/// named aggregate types into the input buffer.
|
|
void RewriteModernObjC::RewriteLocallyDefinedNamedAggregates(FieldDecl *fieldDecl,
|
|
std::string &Result) {
|
|
QualType Type = fieldDecl->getType();
|
|
if (isa<TypedefType>(Type))
|
|
return;
|
|
if (Type->isArrayType())
|
|
Type = Context->getBaseElementType(Type);
|
|
ObjCContainerDecl *IDecl =
|
|
dyn_cast<ObjCContainerDecl>(fieldDecl->getDeclContext());
|
|
|
|
TagDecl *TD = nullptr;
|
|
if (Type->isRecordType()) {
|
|
TD = Type->getAs<RecordType>()->getDecl();
|
|
}
|
|
else if (Type->isEnumeralType()) {
|
|
TD = Type->getAs<EnumType>()->getDecl();
|
|
}
|
|
|
|
if (TD) {
|
|
if (GlobalDefinedTags.count(TD))
|
|
return;
|
|
|
|
bool IsNamedDefinition = false;
|
|
if (IsTagDefinedInsideClass(IDecl, TD, IsNamedDefinition)) {
|
|
RewriteObjCFieldDeclType(Type, Result);
|
|
Result += ";";
|
|
}
|
|
if (IsNamedDefinition)
|
|
GlobalDefinedTags.insert(TD);
|
|
}
|
|
}
|
|
|
|
unsigned RewriteModernObjC::ObjCIvarBitfieldGroupNo(ObjCIvarDecl *IV) {
|
|
const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
|
|
if (ObjCInterefaceHasBitfieldGroups.count(CDecl)) {
|
|
return IvarGroupNumber[IV];
|
|
}
|
|
unsigned GroupNo = 0;
|
|
SmallVector<const ObjCIvarDecl *, 8> IVars;
|
|
for (const ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
|
|
IVD; IVD = IVD->getNextIvar())
|
|
IVars.push_back(IVD);
|
|
|
|
for (unsigned i = 0, e = IVars.size(); i < e; i++)
|
|
if (IVars[i]->isBitField()) {
|
|
IvarGroupNumber[IVars[i++]] = ++GroupNo;
|
|
while (i < e && IVars[i]->isBitField())
|
|
IvarGroupNumber[IVars[i++]] = GroupNo;
|
|
if (i < e)
|
|
--i;
|
|
}
|
|
|
|
ObjCInterefaceHasBitfieldGroups.insert(CDecl);
|
|
return IvarGroupNumber[IV];
|
|
}
|
|
|
|
QualType RewriteModernObjC::SynthesizeBitfieldGroupStructType(
|
|
ObjCIvarDecl *IV,
|
|
SmallVectorImpl<ObjCIvarDecl *> &IVars) {
|
|
std::string StructTagName;
|
|
ObjCIvarBitfieldGroupType(IV, StructTagName);
|
|
RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct,
|
|
Context->getTranslationUnitDecl(),
|
|
SourceLocation(), SourceLocation(),
|
|
&Context->Idents.get(StructTagName));
|
|
for (unsigned i=0, e = IVars.size(); i < e; i++) {
|
|
ObjCIvarDecl *Ivar = IVars[i];
|
|
RD->addDecl(FieldDecl::Create(*Context, RD, SourceLocation(), SourceLocation(),
|
|
&Context->Idents.get(Ivar->getName()),
|
|
Ivar->getType(),
|
|
nullptr, /*Expr *BW */Ivar->getBitWidth(),
|
|
false, ICIS_NoInit));
|
|
}
|
|
RD->completeDefinition();
|
|
return Context->getTagDeclType(RD);
|
|
}
|
|
|
|
QualType RewriteModernObjC::GetGroupRecordTypeForObjCIvarBitfield(ObjCIvarDecl *IV) {
|
|
const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
|
|
unsigned GroupNo = ObjCIvarBitfieldGroupNo(IV);
|
|
std::pair<const ObjCInterfaceDecl*, unsigned> tuple = std::make_pair(CDecl, GroupNo);
|
|
if (GroupRecordType.count(tuple))
|
|
return GroupRecordType[tuple];
|
|
|
|
SmallVector<ObjCIvarDecl *, 8> IVars;
|
|
for (const ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
|
|
IVD; IVD = IVD->getNextIvar()) {
|
|
if (IVD->isBitField())
|
|
IVars.push_back(const_cast<ObjCIvarDecl *>(IVD));
|
|
else {
|
|
if (!IVars.empty()) {
|
|
unsigned GroupNo = ObjCIvarBitfieldGroupNo(IVars[0]);
|
|
// Generate the struct type for this group of bitfield ivars.
|
|
GroupRecordType[std::make_pair(CDecl, GroupNo)] =
|
|
SynthesizeBitfieldGroupStructType(IVars[0], IVars);
|
|
IVars.clear();
|
|
}
|
|
}
|
|
}
|
|
if (!IVars.empty()) {
|
|
// Do the last one.
|
|
unsigned GroupNo = ObjCIvarBitfieldGroupNo(IVars[0]);
|
|
GroupRecordType[std::make_pair(CDecl, GroupNo)] =
|
|
SynthesizeBitfieldGroupStructType(IVars[0], IVars);
|
|
}
|
|
QualType RetQT = GroupRecordType[tuple];
|
|
assert(!RetQT.isNull() && "GetGroupRecordTypeForObjCIvarBitfield struct type is NULL");
|
|
|
|
return RetQT;
|
|
}
|
|
|
|
/// ObjCIvarBitfieldGroupDecl - Names field decl. for ivar bitfield group.
|
|
/// Name would be: classname__GRBF_n where n is the group number for this ivar.
|
|
void RewriteModernObjC::ObjCIvarBitfieldGroupDecl(ObjCIvarDecl *IV,
|
|
std::string &Result) {
|
|
const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
|
|
Result += CDecl->getName();
|
|
Result += "__GRBF_";
|
|
unsigned GroupNo = ObjCIvarBitfieldGroupNo(IV);
|
|
Result += utostr(GroupNo);
|
|
}
|
|
|
|
/// ObjCIvarBitfieldGroupType - Names struct type for ivar bitfield group.
|
|
/// Name of the struct would be: classname__T_n where n is the group number for
|
|
/// this ivar.
|
|
void RewriteModernObjC::ObjCIvarBitfieldGroupType(ObjCIvarDecl *IV,
|
|
std::string &Result) {
|
|
const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
|
|
Result += CDecl->getName();
|
|
Result += "__T_";
|
|
unsigned GroupNo = ObjCIvarBitfieldGroupNo(IV);
|
|
Result += utostr(GroupNo);
|
|
}
|
|
|
|
/// ObjCIvarBitfieldGroupOffset - Names symbol for ivar bitfield group field offset.
|
|
/// Name would be: OBJC_IVAR_$_classname__GRBF_n where n is the group number for
|
|
/// this ivar.
|
|
void RewriteModernObjC::ObjCIvarBitfieldGroupOffset(ObjCIvarDecl *IV,
|
|
std::string &Result) {
|
|
Result += "OBJC_IVAR_$_";
|
|
ObjCIvarBitfieldGroupDecl(IV, Result);
|
|
}
|
|
|
|
#define SKIP_BITFIELDS(IX, ENDIX, VEC) { \
|
|
while ((IX < ENDIX) && VEC[IX]->isBitField()) \
|
|
++IX; \
|
|
if (IX < ENDIX) \
|
|
--IX; \
|
|
}
|
|
|
|
/// RewriteObjCInternalStruct - Rewrite one internal struct corresponding to
|
|
/// an objective-c class with ivars.
|
|
void RewriteModernObjC::RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl,
|
|
std::string &Result) {
|
|
assert(CDecl && "Class missing in SynthesizeObjCInternalStruct");
|
|
assert(CDecl->getName() != "" &&
|
|
"Name missing in SynthesizeObjCInternalStruct");
|
|
ObjCInterfaceDecl *RCDecl = CDecl->getSuperClass();
|
|
SmallVector<ObjCIvarDecl *, 8> IVars;
|
|
for (ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
|
|
IVD; IVD = IVD->getNextIvar())
|
|
IVars.push_back(IVD);
|
|
|
|
SourceLocation LocStart = CDecl->getBeginLoc();
|
|
SourceLocation LocEnd = CDecl->getEndOfDefinitionLoc();
|
|
|
|
const char *startBuf = SM->getCharacterData(LocStart);
|
|
const char *endBuf = SM->getCharacterData(LocEnd);
|
|
|
|
// If no ivars and no root or if its root, directly or indirectly,
|
|
// have no ivars (thus not synthesized) then no need to synthesize this class.
|
|
if ((!CDecl->isThisDeclarationADefinition() || IVars.size() == 0) &&
|
|
(!RCDecl || !ObjCSynthesizedStructs.count(RCDecl))) {
|
|
endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
|
|
ReplaceText(LocStart, endBuf-startBuf, Result);
|
|
return;
|
|
}
|
|
|
|
// Insert named struct/union definitions inside class to
|
|
// outer scope. This follows semantics of locally defined
|
|
// struct/unions in objective-c classes.
|
|
for (unsigned i = 0, e = IVars.size(); i < e; i++)
|
|
RewriteLocallyDefinedNamedAggregates(IVars[i], Result);
|
|
|
|
// Insert named structs which are syntheized to group ivar bitfields
|
|
// to outer scope as well.
|
|
for (unsigned i = 0, e = IVars.size(); i < e; i++)
|
|
if (IVars[i]->isBitField()) {
|
|
ObjCIvarDecl *IV = IVars[i];
|
|
QualType QT = GetGroupRecordTypeForObjCIvarBitfield(IV);
|
|
RewriteObjCFieldDeclType(QT, Result);
|
|
Result += ";";
|
|
// skip over ivar bitfields in this group.
|
|
SKIP_BITFIELDS(i , e, IVars);
|
|
}
|
|
|
|
Result += "\nstruct ";
|
|
Result += CDecl->getNameAsString();
|
|
Result += "_IMPL {\n";
|
|
|
|
if (RCDecl && ObjCSynthesizedStructs.count(RCDecl)) {
|
|
Result += "\tstruct "; Result += RCDecl->getNameAsString();
|
|
Result += "_IMPL "; Result += RCDecl->getNameAsString();
|
|
Result += "_IVARS;\n";
|
|
}
|
|
|
|
for (unsigned i = 0, e = IVars.size(); i < e; i++) {
|
|
if (IVars[i]->isBitField()) {
|
|
ObjCIvarDecl *IV = IVars[i];
|
|
Result += "\tstruct ";
|
|
ObjCIvarBitfieldGroupType(IV, Result); Result += " ";
|
|
ObjCIvarBitfieldGroupDecl(IV, Result); Result += ";\n";
|
|
// skip over ivar bitfields in this group.
|
|
SKIP_BITFIELDS(i , e, IVars);
|
|
}
|
|
else
|
|
RewriteObjCFieldDecl(IVars[i], Result);
|
|
}
|
|
|
|
Result += "};\n";
|
|
endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
|
|
ReplaceText(LocStart, endBuf-startBuf, Result);
|
|
// Mark this struct as having been generated.
|
|
if (!ObjCSynthesizedStructs.insert(CDecl).second)
|
|
llvm_unreachable("struct already synthesize- RewriteObjCInternalStruct");
|
|
}
|
|
|
|
/// RewriteIvarOffsetSymbols - Rewrite ivar offset symbols of those ivars which
|
|
/// have been referenced in an ivar access expression.
|
|
void RewriteModernObjC::RewriteIvarOffsetSymbols(ObjCInterfaceDecl *CDecl,
|
|
std::string &Result) {
|
|
// write out ivar offset symbols which have been referenced in an ivar
|
|
// access expression.
|
|
llvm::SmallSetVector<ObjCIvarDecl *, 8> Ivars = ReferencedIvars[CDecl];
|
|
|
|
if (Ivars.empty())
|
|
return;
|
|
|
|
llvm::DenseSet<std::pair<const ObjCInterfaceDecl*, unsigned> > GroupSymbolOutput;
|
|
for (ObjCIvarDecl *IvarDecl : Ivars) {
|
|
const ObjCInterfaceDecl *IDecl = IvarDecl->getContainingInterface();
|
|
unsigned GroupNo = 0;
|
|
if (IvarDecl->isBitField()) {
|
|
GroupNo = ObjCIvarBitfieldGroupNo(IvarDecl);
|
|
if (GroupSymbolOutput.count(std::make_pair(IDecl, GroupNo)))
|
|
continue;
|
|
}
|
|
Result += "\n";
|
|
if (LangOpts.MicrosoftExt)
|
|
Result += "__declspec(allocate(\".objc_ivar$B\")) ";
|
|
Result += "extern \"C\" ";
|
|
if (LangOpts.MicrosoftExt &&
|
|
IvarDecl->getAccessControl() != ObjCIvarDecl::Private &&
|
|
IvarDecl->getAccessControl() != ObjCIvarDecl::Package)
|
|
Result += "__declspec(dllimport) ";
|
|
|
|
Result += "unsigned long ";
|
|
if (IvarDecl->isBitField()) {
|
|
ObjCIvarBitfieldGroupOffset(IvarDecl, Result);
|
|
GroupSymbolOutput.insert(std::make_pair(IDecl, GroupNo));
|
|
}
|
|
else
|
|
WriteInternalIvarName(CDecl, IvarDecl, Result);
|
|
Result += ";";
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Meta Data Emission
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// RewriteImplementations - This routine rewrites all method implementations
|
|
/// and emits meta-data.
|
|
|
|
void RewriteModernObjC::RewriteImplementations() {
|
|
int ClsDefCount = ClassImplementation.size();
|
|
int CatDefCount = CategoryImplementation.size();
|
|
|
|
// Rewrite implemented methods
|
|
for (int i = 0; i < ClsDefCount; i++) {
|
|
ObjCImplementationDecl *OIMP = ClassImplementation[i];
|
|
ObjCInterfaceDecl *CDecl = OIMP->getClassInterface();
|
|
if (CDecl->isImplicitInterfaceDecl())
|
|
assert(false &&
|
|
"Legacy implicit interface rewriting not supported in moder abi");
|
|
RewriteImplementationDecl(OIMP);
|
|
}
|
|
|
|
for (int i = 0; i < CatDefCount; i++) {
|
|
ObjCCategoryImplDecl *CIMP = CategoryImplementation[i];
|
|
ObjCInterfaceDecl *CDecl = CIMP->getClassInterface();
|
|
if (CDecl->isImplicitInterfaceDecl())
|
|
assert(false &&
|
|
"Legacy implicit interface rewriting not supported in moder abi");
|
|
RewriteImplementationDecl(CIMP);
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteByRefString(std::string &ResultStr,
|
|
const std::string &Name,
|
|
ValueDecl *VD, bool def) {
|
|
assert(BlockByRefDeclNo.count(VD) &&
|
|
"RewriteByRefString: ByRef decl missing");
|
|
if (def)
|
|
ResultStr += "struct ";
|
|
ResultStr += "__Block_byref_" + Name +
|
|
"_" + utostr(BlockByRefDeclNo[VD]) ;
|
|
}
|
|
|
|
static bool HasLocalVariableExternalStorage(ValueDecl *VD) {
|
|
if (VarDecl *Var = dyn_cast<VarDecl>(VD))
|
|
return (Var->isFunctionOrMethodVarDecl() && !Var->hasLocalStorage());
|
|
return false;
|
|
}
|
|
|
|
std::string RewriteModernObjC::SynthesizeBlockFunc(BlockExpr *CE, int i,
|
|
StringRef funcName,
|
|
std::string Tag) {
|
|
const FunctionType *AFT = CE->getFunctionType();
|
|
QualType RT = AFT->getReturnType();
|
|
std::string StructRef = "struct " + Tag;
|
|
SourceLocation BlockLoc = CE->getExprLoc();
|
|
std::string S;
|
|
ConvertSourceLocationToLineDirective(BlockLoc, S);
|
|
|
|
S += "static " + RT.getAsString(Context->getPrintingPolicy()) + " __" +
|
|
funcName.str() + "_block_func_" + utostr(i);
|
|
|
|
BlockDecl *BD = CE->getBlockDecl();
|
|
|
|
if (isa<FunctionNoProtoType>(AFT)) {
|
|
// No user-supplied arguments. Still need to pass in a pointer to the
|
|
// block (to reference imported block decl refs).
|
|
S += "(" + StructRef + " *__cself)";
|
|
} else if (BD->param_empty()) {
|
|
S += "(" + StructRef + " *__cself)";
|
|
} else {
|
|
const FunctionProtoType *FT = cast<FunctionProtoType>(AFT);
|
|
assert(FT && "SynthesizeBlockFunc: No function proto");
|
|
S += '(';
|
|
// first add the implicit argument.
|
|
S += StructRef + " *__cself, ";
|
|
std::string ParamStr;
|
|
for (BlockDecl::param_iterator AI = BD->param_begin(),
|
|
E = BD->param_end(); AI != E; ++AI) {
|
|
if (AI != BD->param_begin()) S += ", ";
|
|
ParamStr = (*AI)->getNameAsString();
|
|
QualType QT = (*AI)->getType();
|
|
(void)convertBlockPointerToFunctionPointer(QT);
|
|
QT.getAsStringInternal(ParamStr, Context->getPrintingPolicy());
|
|
S += ParamStr;
|
|
}
|
|
if (FT->isVariadic()) {
|
|
if (!BD->param_empty()) S += ", ";
|
|
S += "...";
|
|
}
|
|
S += ')';
|
|
}
|
|
S += " {\n";
|
|
|
|
// Create local declarations to avoid rewriting all closure decl ref exprs.
|
|
// First, emit a declaration for all "by ref" decls.
|
|
for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
|
|
E = BlockByRefDecls.end(); I != E; ++I) {
|
|
S += " ";
|
|
std::string Name = (*I)->getNameAsString();
|
|
std::string TypeString;
|
|
RewriteByRefString(TypeString, Name, (*I));
|
|
TypeString += " *";
|
|
Name = TypeString + Name;
|
|
S += Name + " = __cself->" + (*I)->getNameAsString() + "; // bound by ref\n";
|
|
}
|
|
// Next, emit a declaration for all "by copy" declarations.
|
|
for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
|
|
E = BlockByCopyDecls.end(); I != E; ++I) {
|
|
S += " ";
|
|
// Handle nested closure invocation. For example:
|
|
//
|
|
// void (^myImportedClosure)(void);
|
|
// myImportedClosure = ^(void) { setGlobalInt(x + y); };
|
|
//
|
|
// void (^anotherClosure)(void);
|
|
// anotherClosure = ^(void) {
|
|
// myImportedClosure(); // import and invoke the closure
|
|
// };
|
|
//
|
|
if (isTopLevelBlockPointerType((*I)->getType())) {
|
|
RewriteBlockPointerTypeVariable(S, (*I));
|
|
S += " = (";
|
|
RewriteBlockPointerType(S, (*I)->getType());
|
|
S += ")";
|
|
S += "__cself->" + (*I)->getNameAsString() + "; // bound by copy\n";
|
|
}
|
|
else {
|
|
std::string Name = (*I)->getNameAsString();
|
|
QualType QT = (*I)->getType();
|
|
if (HasLocalVariableExternalStorage(*I))
|
|
QT = Context->getPointerType(QT);
|
|
QT.getAsStringInternal(Name, Context->getPrintingPolicy());
|
|
S += Name + " = __cself->" +
|
|
(*I)->getNameAsString() + "; // bound by copy\n";
|
|
}
|
|
}
|
|
std::string RewrittenStr = RewrittenBlockExprs[CE];
|
|
const char *cstr = RewrittenStr.c_str();
|
|
while (*cstr++ != '{') ;
|
|
S += cstr;
|
|
S += "\n";
|
|
return S;
|
|
}
|
|
|
|
std::string RewriteModernObjC::SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
|
|
StringRef funcName,
|
|
std::string Tag) {
|
|
std::string StructRef = "struct " + Tag;
|
|
std::string S = "static void __";
|
|
|
|
S += funcName;
|
|
S += "_block_copy_" + utostr(i);
|
|
S += "(" + StructRef;
|
|
S += "*dst, " + StructRef;
|
|
S += "*src) {";
|
|
for (ValueDecl *VD : ImportedBlockDecls) {
|
|
S += "_Block_object_assign((void*)&dst->";
|
|
S += VD->getNameAsString();
|
|
S += ", (void*)src->";
|
|
S += VD->getNameAsString();
|
|
if (BlockByRefDeclsPtrSet.count(VD))
|
|
S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
|
|
else if (VD->getType()->isBlockPointerType())
|
|
S += ", " + utostr(BLOCK_FIELD_IS_BLOCK) + "/*BLOCK_FIELD_IS_BLOCK*/);";
|
|
else
|
|
S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
|
|
}
|
|
S += "}\n";
|
|
|
|
S += "\nstatic void __";
|
|
S += funcName;
|
|
S += "_block_dispose_" + utostr(i);
|
|
S += "(" + StructRef;
|
|
S += "*src) {";
|
|
for (ValueDecl *VD : ImportedBlockDecls) {
|
|
S += "_Block_object_dispose((void*)src->";
|
|
S += VD->getNameAsString();
|
|
if (BlockByRefDeclsPtrSet.count(VD))
|
|
S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
|
|
else if (VD->getType()->isBlockPointerType())
|
|
S += ", " + utostr(BLOCK_FIELD_IS_BLOCK) + "/*BLOCK_FIELD_IS_BLOCK*/);";
|
|
else
|
|
S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
|
|
}
|
|
S += "}\n";
|
|
return S;
|
|
}
|
|
|
|
std::string RewriteModernObjC::SynthesizeBlockImpl(BlockExpr *CE, std::string Tag,
|
|
std::string Desc) {
|
|
std::string S = "\nstruct " + Tag;
|
|
std::string Constructor = " " + Tag;
|
|
|
|
S += " {\n struct __block_impl impl;\n";
|
|
S += " struct " + Desc;
|
|
S += "* Desc;\n";
|
|
|
|
Constructor += "(void *fp, "; // Invoke function pointer.
|
|
Constructor += "struct " + Desc; // Descriptor pointer.
|
|
Constructor += " *desc";
|
|
|
|
if (BlockDeclRefs.size()) {
|
|
// Output all "by copy" declarations.
|
|
for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
|
|
E = BlockByCopyDecls.end(); I != E; ++I) {
|
|
S += " ";
|
|
std::string FieldName = (*I)->getNameAsString();
|
|
std::string ArgName = "_" + FieldName;
|
|
// Handle nested closure invocation. For example:
|
|
//
|
|
// void (^myImportedBlock)(void);
|
|
// myImportedBlock = ^(void) { setGlobalInt(x + y); };
|
|
//
|
|
// void (^anotherBlock)(void);
|
|
// anotherBlock = ^(void) {
|
|
// myImportedBlock(); // import and invoke the closure
|
|
// };
|
|
//
|
|
if (isTopLevelBlockPointerType((*I)->getType())) {
|
|
S += "struct __block_impl *";
|
|
Constructor += ", void *" + ArgName;
|
|
} else {
|
|
QualType QT = (*I)->getType();
|
|
if (HasLocalVariableExternalStorage(*I))
|
|
QT = Context->getPointerType(QT);
|
|
QT.getAsStringInternal(FieldName, Context->getPrintingPolicy());
|
|
QT.getAsStringInternal(ArgName, Context->getPrintingPolicy());
|
|
Constructor += ", " + ArgName;
|
|
}
|
|
S += FieldName + ";\n";
|
|
}
|
|
// Output all "by ref" declarations.
|
|
for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
|
|
E = BlockByRefDecls.end(); I != E; ++I) {
|
|
S += " ";
|
|
std::string FieldName = (*I)->getNameAsString();
|
|
std::string ArgName = "_" + FieldName;
|
|
{
|
|
std::string TypeString;
|
|
RewriteByRefString(TypeString, FieldName, (*I));
|
|
TypeString += " *";
|
|
FieldName = TypeString + FieldName;
|
|
ArgName = TypeString + ArgName;
|
|
Constructor += ", " + ArgName;
|
|
}
|
|
S += FieldName + "; // by ref\n";
|
|
}
|
|
// Finish writing the constructor.
|
|
Constructor += ", int flags=0)";
|
|
// Initialize all "by copy" arguments.
|
|
bool firsTime = true;
|
|
for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
|
|
E = BlockByCopyDecls.end(); I != E; ++I) {
|
|
std::string Name = (*I)->getNameAsString();
|
|
if (firsTime) {
|
|
Constructor += " : ";
|
|
firsTime = false;
|
|
}
|
|
else
|
|
Constructor += ", ";
|
|
if (isTopLevelBlockPointerType((*I)->getType()))
|
|
Constructor += Name + "((struct __block_impl *)_" + Name + ")";
|
|
else
|
|
Constructor += Name + "(_" + Name + ")";
|
|
}
|
|
// Initialize all "by ref" arguments.
|
|
for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
|
|
E = BlockByRefDecls.end(); I != E; ++I) {
|
|
std::string Name = (*I)->getNameAsString();
|
|
if (firsTime) {
|
|
Constructor += " : ";
|
|
firsTime = false;
|
|
}
|
|
else
|
|
Constructor += ", ";
|
|
Constructor += Name + "(_" + Name + "->__forwarding)";
|
|
}
|
|
|
|
Constructor += " {\n";
|
|
if (GlobalVarDecl)
|
|
Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n";
|
|
else
|
|
Constructor += " impl.isa = &_NSConcreteStackBlock;\n";
|
|
Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n";
|
|
|
|
Constructor += " Desc = desc;\n";
|
|
} else {
|
|
// Finish writing the constructor.
|
|
Constructor += ", int flags=0) {\n";
|
|
if (GlobalVarDecl)
|
|
Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n";
|
|
else
|
|
Constructor += " impl.isa = &_NSConcreteStackBlock;\n";
|
|
Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n";
|
|
Constructor += " Desc = desc;\n";
|
|
}
|
|
Constructor += " ";
|
|
Constructor += "}\n";
|
|
S += Constructor;
|
|
S += "};\n";
|
|
return S;
|
|
}
|
|
|
|
std::string RewriteModernObjC::SynthesizeBlockDescriptor(std::string DescTag,
|
|
std::string ImplTag, int i,
|
|
StringRef FunName,
|
|
unsigned hasCopy) {
|
|
std::string S = "\nstatic struct " + DescTag;
|
|
|
|
S += " {\n size_t reserved;\n";
|
|
S += " size_t Block_size;\n";
|
|
if (hasCopy) {
|
|
S += " void (*copy)(struct ";
|
|
S += ImplTag; S += "*, struct ";
|
|
S += ImplTag; S += "*);\n";
|
|
|
|
S += " void (*dispose)(struct ";
|
|
S += ImplTag; S += "*);\n";
|
|
}
|
|
S += "} ";
|
|
|
|
S += DescTag + "_DATA = { 0, sizeof(struct ";
|
|
S += ImplTag + ")";
|
|
if (hasCopy) {
|
|
S += ", __" + FunName.str() + "_block_copy_" + utostr(i);
|
|
S += ", __" + FunName.str() + "_block_dispose_" + utostr(i);
|
|
}
|
|
S += "};\n";
|
|
return S;
|
|
}
|
|
|
|
void RewriteModernObjC::SynthesizeBlockLiterals(SourceLocation FunLocStart,
|
|
StringRef FunName) {
|
|
bool RewriteSC = (GlobalVarDecl &&
|
|
!Blocks.empty() &&
|
|
GlobalVarDecl->getStorageClass() == SC_Static &&
|
|
GlobalVarDecl->getType().getCVRQualifiers());
|
|
if (RewriteSC) {
|
|
std::string SC(" void __");
|
|
SC += GlobalVarDecl->getNameAsString();
|
|
SC += "() {}";
|
|
InsertText(FunLocStart, SC);
|
|
}
|
|
|
|
// Insert closures that were part of the function.
|
|
for (unsigned i = 0, count=0; i < Blocks.size(); i++) {
|
|
CollectBlockDeclRefInfo(Blocks[i]);
|
|
// Need to copy-in the inner copied-in variables not actually used in this
|
|
// block.
|
|
for (int j = 0; j < InnerDeclRefsCount[i]; j++) {
|
|
DeclRefExpr *Exp = InnerDeclRefs[count++];
|
|
ValueDecl *VD = Exp->getDecl();
|
|
BlockDeclRefs.push_back(Exp);
|
|
if (!VD->hasAttr<BlocksAttr>()) {
|
|
if (!BlockByCopyDeclsPtrSet.count(VD)) {
|
|
BlockByCopyDeclsPtrSet.insert(VD);
|
|
BlockByCopyDecls.push_back(VD);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (!BlockByRefDeclsPtrSet.count(VD)) {
|
|
BlockByRefDeclsPtrSet.insert(VD);
|
|
BlockByRefDecls.push_back(VD);
|
|
}
|
|
|
|
// imported objects in the inner blocks not used in the outer
|
|
// blocks must be copied/disposed in the outer block as well.
|
|
if (VD->getType()->isObjCObjectPointerType() ||
|
|
VD->getType()->isBlockPointerType())
|
|
ImportedBlockDecls.insert(VD);
|
|
}
|
|
|
|
std::string ImplTag = "__" + FunName.str() + "_block_impl_" + utostr(i);
|
|
std::string DescTag = "__" + FunName.str() + "_block_desc_" + utostr(i);
|
|
|
|
std::string CI = SynthesizeBlockImpl(Blocks[i], ImplTag, DescTag);
|
|
|
|
InsertText(FunLocStart, CI);
|
|
|
|
std::string CF = SynthesizeBlockFunc(Blocks[i], i, FunName, ImplTag);
|
|
|
|
InsertText(FunLocStart, CF);
|
|
|
|
if (ImportedBlockDecls.size()) {
|
|
std::string HF = SynthesizeBlockHelperFuncs(Blocks[i], i, FunName, ImplTag);
|
|
InsertText(FunLocStart, HF);
|
|
}
|
|
std::string BD = SynthesizeBlockDescriptor(DescTag, ImplTag, i, FunName,
|
|
ImportedBlockDecls.size() > 0);
|
|
InsertText(FunLocStart, BD);
|
|
|
|
BlockDeclRefs.clear();
|
|
BlockByRefDecls.clear();
|
|
BlockByRefDeclsPtrSet.clear();
|
|
BlockByCopyDecls.clear();
|
|
BlockByCopyDeclsPtrSet.clear();
|
|
ImportedBlockDecls.clear();
|
|
}
|
|
if (RewriteSC) {
|
|
// Must insert any 'const/volatile/static here. Since it has been
|
|
// removed as result of rewriting of block literals.
|
|
std::string SC;
|
|
if (GlobalVarDecl->getStorageClass() == SC_Static)
|
|
SC = "static ";
|
|
if (GlobalVarDecl->getType().isConstQualified())
|
|
SC += "const ";
|
|
if (GlobalVarDecl->getType().isVolatileQualified())
|
|
SC += "volatile ";
|
|
if (GlobalVarDecl->getType().isRestrictQualified())
|
|
SC += "restrict ";
|
|
InsertText(FunLocStart, SC);
|
|
}
|
|
if (GlobalConstructionExp) {
|
|
// extra fancy dance for global literal expression.
|
|
|
|
// Always the latest block expression on the block stack.
|
|
std::string Tag = "__";
|
|
Tag += FunName;
|
|
Tag += "_block_impl_";
|
|
Tag += utostr(Blocks.size()-1);
|
|
std::string globalBuf = "static ";
|
|
globalBuf += Tag; globalBuf += " ";
|
|
std::string SStr;
|
|
|
|
llvm::raw_string_ostream constructorExprBuf(SStr);
|
|
GlobalConstructionExp->printPretty(constructorExprBuf, nullptr,
|
|
PrintingPolicy(LangOpts));
|
|
globalBuf += constructorExprBuf.str();
|
|
globalBuf += ";\n";
|
|
InsertText(FunLocStart, globalBuf);
|
|
GlobalConstructionExp = nullptr;
|
|
}
|
|
|
|
Blocks.clear();
|
|
InnerDeclRefsCount.clear();
|
|
InnerDeclRefs.clear();
|
|
RewrittenBlockExprs.clear();
|
|
}
|
|
|
|
void RewriteModernObjC::InsertBlockLiteralsWithinFunction(FunctionDecl *FD) {
|
|
SourceLocation FunLocStart =
|
|
(!Blocks.empty()) ? getFunctionSourceLocation(*this, FD)
|
|
: FD->getTypeSpecStartLoc();
|
|
StringRef FuncName = FD->getName();
|
|
|
|
SynthesizeBlockLiterals(FunLocStart, FuncName);
|
|
}
|
|
|
|
static void BuildUniqueMethodName(std::string &Name,
|
|
ObjCMethodDecl *MD) {
|
|
ObjCInterfaceDecl *IFace = MD->getClassInterface();
|
|
Name = IFace->getName();
|
|
Name += "__" + MD->getSelector().getAsString();
|
|
// Convert colons to underscores.
|
|
std::string::size_type loc = 0;
|
|
while ((loc = Name.find(':', loc)) != std::string::npos)
|
|
Name.replace(loc, 1, "_");
|
|
}
|
|
|
|
void RewriteModernObjC::InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD) {
|
|
// fprintf(stderr,"In InsertBlockLiteralsWitinMethod\n");
|
|
// SourceLocation FunLocStart = MD->getBeginLoc();
|
|
SourceLocation FunLocStart = MD->getBeginLoc();
|
|
std::string FuncName;
|
|
BuildUniqueMethodName(FuncName, MD);
|
|
SynthesizeBlockLiterals(FunLocStart, FuncName);
|
|
}
|
|
|
|
void RewriteModernObjC::GetBlockDeclRefExprs(Stmt *S) {
|
|
for (Stmt *SubStmt : S->children())
|
|
if (SubStmt) {
|
|
if (BlockExpr *CBE = dyn_cast<BlockExpr>(SubStmt))
|
|
GetBlockDeclRefExprs(CBE->getBody());
|
|
else
|
|
GetBlockDeclRefExprs(SubStmt);
|
|
}
|
|
// Handle specific things.
|
|
if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S))
|
|
if (DRE->refersToEnclosingVariableOrCapture() ||
|
|
HasLocalVariableExternalStorage(DRE->getDecl()))
|
|
// FIXME: Handle enums.
|
|
BlockDeclRefs.push_back(DRE);
|
|
}
|
|
|
|
void RewriteModernObjC::GetInnerBlockDeclRefExprs(Stmt *S,
|
|
SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs,
|
|
llvm::SmallPtrSetImpl<const DeclContext *> &InnerContexts) {
|
|
for (Stmt *SubStmt : S->children())
|
|
if (SubStmt) {
|
|
if (BlockExpr *CBE = dyn_cast<BlockExpr>(SubStmt)) {
|
|
InnerContexts.insert(cast<DeclContext>(CBE->getBlockDecl()));
|
|
GetInnerBlockDeclRefExprs(CBE->getBody(),
|
|
InnerBlockDeclRefs,
|
|
InnerContexts);
|
|
}
|
|
else
|
|
GetInnerBlockDeclRefExprs(SubStmt, InnerBlockDeclRefs, InnerContexts);
|
|
}
|
|
// Handle specific things.
|
|
if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
|
|
if (DRE->refersToEnclosingVariableOrCapture() ||
|
|
HasLocalVariableExternalStorage(DRE->getDecl())) {
|
|
if (!InnerContexts.count(DRE->getDecl()->getDeclContext()))
|
|
InnerBlockDeclRefs.push_back(DRE);
|
|
if (VarDecl *Var = cast<VarDecl>(DRE->getDecl()))
|
|
if (Var->isFunctionOrMethodVarDecl())
|
|
ImportedLocalExternalDecls.insert(Var);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// convertObjCTypeToCStyleType - This routine converts such objc types
|
|
/// as qualified objects, and blocks to their closest c/c++ types that
|
|
/// it can. It returns true if input type was modified.
|
|
bool RewriteModernObjC::convertObjCTypeToCStyleType(QualType &T) {
|
|
QualType oldT = T;
|
|
convertBlockPointerToFunctionPointer(T);
|
|
if (T->isFunctionPointerType()) {
|
|
QualType PointeeTy;
|
|
if (const PointerType* PT = T->getAs<PointerType>()) {
|
|
PointeeTy = PT->getPointeeType();
|
|
if (const FunctionType *FT = PointeeTy->getAs<FunctionType>()) {
|
|
T = convertFunctionTypeOfBlocks(FT);
|
|
T = Context->getPointerType(T);
|
|
}
|
|
}
|
|
}
|
|
|
|
convertToUnqualifiedObjCType(T);
|
|
return T != oldT;
|
|
}
|
|
|
|
/// convertFunctionTypeOfBlocks - This routine converts a function type
|
|
/// whose result type may be a block pointer or whose argument type(s)
|
|
/// might be block pointers to an equivalent function type replacing
|
|
/// all block pointers to function pointers.
|
|
QualType RewriteModernObjC::convertFunctionTypeOfBlocks(const FunctionType *FT) {
|
|
const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
|
|
// FTP will be null for closures that don't take arguments.
|
|
// Generate a funky cast.
|
|
SmallVector<QualType, 8> ArgTypes;
|
|
QualType Res = FT->getReturnType();
|
|
bool modified = convertObjCTypeToCStyleType(Res);
|
|
|
|
if (FTP) {
|
|
for (auto &I : FTP->param_types()) {
|
|
QualType t = I;
|
|
// Make sure we convert "t (^)(...)" to "t (*)(...)".
|
|
if (convertObjCTypeToCStyleType(t))
|
|
modified = true;
|
|
ArgTypes.push_back(t);
|
|
}
|
|
}
|
|
QualType FuncType;
|
|
if (modified)
|
|
FuncType = getSimpleFunctionType(Res, ArgTypes);
|
|
else FuncType = QualType(FT, 0);
|
|
return FuncType;
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::SynthesizeBlockCall(CallExpr *Exp, const Expr *BlockExp) {
|
|
// Navigate to relevant type information.
|
|
const BlockPointerType *CPT = nullptr;
|
|
|
|
if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BlockExp)) {
|
|
CPT = DRE->getType()->getAs<BlockPointerType>();
|
|
} else if (const MemberExpr *MExpr = dyn_cast<MemberExpr>(BlockExp)) {
|
|
CPT = MExpr->getType()->getAs<BlockPointerType>();
|
|
}
|
|
else if (const ParenExpr *PRE = dyn_cast<ParenExpr>(BlockExp)) {
|
|
return SynthesizeBlockCall(Exp, PRE->getSubExpr());
|
|
}
|
|
else if (const ImplicitCastExpr *IEXPR = dyn_cast<ImplicitCastExpr>(BlockExp))
|
|
CPT = IEXPR->getType()->getAs<BlockPointerType>();
|
|
else if (const ConditionalOperator *CEXPR =
|
|
dyn_cast<ConditionalOperator>(BlockExp)) {
|
|
Expr *LHSExp = CEXPR->getLHS();
|
|
Stmt *LHSStmt = SynthesizeBlockCall(Exp, LHSExp);
|
|
Expr *RHSExp = CEXPR->getRHS();
|
|
Stmt *RHSStmt = SynthesizeBlockCall(Exp, RHSExp);
|
|
Expr *CONDExp = CEXPR->getCond();
|
|
ConditionalOperator *CondExpr =
|
|
new (Context) ConditionalOperator(CONDExp,
|
|
SourceLocation(), cast<Expr>(LHSStmt),
|
|
SourceLocation(), cast<Expr>(RHSStmt),
|
|
Exp->getType(), VK_RValue, OK_Ordinary);
|
|
return CondExpr;
|
|
} else if (const ObjCIvarRefExpr *IRE = dyn_cast<ObjCIvarRefExpr>(BlockExp)) {
|
|
CPT = IRE->getType()->getAs<BlockPointerType>();
|
|
} else if (const PseudoObjectExpr *POE
|
|
= dyn_cast<PseudoObjectExpr>(BlockExp)) {
|
|
CPT = POE->getType()->castAs<BlockPointerType>();
|
|
} else {
|
|
assert(false && "RewriteBlockClass: Bad type");
|
|
}
|
|
assert(CPT && "RewriteBlockClass: Bad type");
|
|
const FunctionType *FT = CPT->getPointeeType()->getAs<FunctionType>();
|
|
assert(FT && "RewriteBlockClass: Bad type");
|
|
const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
|
|
// FTP will be null for closures that don't take arguments.
|
|
|
|
RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
|
|
SourceLocation(), SourceLocation(),
|
|
&Context->Idents.get("__block_impl"));
|
|
QualType PtrBlock = Context->getPointerType(Context->getTagDeclType(RD));
|
|
|
|
// Generate a funky cast.
|
|
SmallVector<QualType, 8> ArgTypes;
|
|
|
|
// Push the block argument type.
|
|
ArgTypes.push_back(PtrBlock);
|
|
if (FTP) {
|
|
for (auto &I : FTP->param_types()) {
|
|
QualType t = I;
|
|
// Make sure we convert "t (^)(...)" to "t (*)(...)".
|
|
if (!convertBlockPointerToFunctionPointer(t))
|
|
convertToUnqualifiedObjCType(t);
|
|
ArgTypes.push_back(t);
|
|
}
|
|
}
|
|
// Now do the pointer to function cast.
|
|
QualType PtrToFuncCastType = getSimpleFunctionType(Exp->getType(), ArgTypes);
|
|
|
|
PtrToFuncCastType = Context->getPointerType(PtrToFuncCastType);
|
|
|
|
CastExpr *BlkCast = NoTypeInfoCStyleCastExpr(Context, PtrBlock,
|
|
CK_BitCast,
|
|
const_cast<Expr*>(BlockExp));
|
|
// Don't forget the parens to enforce the proper binding.
|
|
ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
|
|
BlkCast);
|
|
//PE->dump();
|
|
|
|
FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
|
|
SourceLocation(),
|
|
&Context->Idents.get("FuncPtr"),
|
|
Context->VoidPtrTy, nullptr,
|
|
/*BitWidth=*/nullptr, /*Mutable=*/true,
|
|
ICIS_NoInit);
|
|
MemberExpr *ME = MemberExpr::CreateImplicit(
|
|
*Context, PE, true, FD, FD->getType(), VK_LValue, OK_Ordinary);
|
|
|
|
CastExpr *FunkCast = NoTypeInfoCStyleCastExpr(Context, PtrToFuncCastType,
|
|
CK_BitCast, ME);
|
|
PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), FunkCast);
|
|
|
|
SmallVector<Expr*, 8> BlkExprs;
|
|
// Add the implicit argument.
|
|
BlkExprs.push_back(BlkCast);
|
|
// Add the user arguments.
|
|
for (CallExpr::arg_iterator I = Exp->arg_begin(),
|
|
E = Exp->arg_end(); I != E; ++I) {
|
|
BlkExprs.push_back(*I);
|
|
}
|
|
CallExpr *CE = CallExpr::Create(*Context, PE, BlkExprs, Exp->getType(),
|
|
VK_RValue, SourceLocation());
|
|
return CE;
|
|
}
|
|
|
|
// We need to return the rewritten expression to handle cases where the
|
|
// DeclRefExpr is embedded in another expression being rewritten.
|
|
// For example:
|
|
//
|
|
// int main() {
|
|
// __block Foo *f;
|
|
// __block int i;
|
|
//
|
|
// void (^myblock)() = ^() {
|
|
// [f test]; // f is a DeclRefExpr embedded in a message (which is being rewritten).
|
|
// i = 77;
|
|
// };
|
|
//}
|
|
Stmt *RewriteModernObjC::RewriteBlockDeclRefExpr(DeclRefExpr *DeclRefExp) {
|
|
// Rewrite the byref variable into BYREFVAR->__forwarding->BYREFVAR
|
|
// for each DeclRefExp where BYREFVAR is name of the variable.
|
|
ValueDecl *VD = DeclRefExp->getDecl();
|
|
bool isArrow = DeclRefExp->refersToEnclosingVariableOrCapture() ||
|
|
HasLocalVariableExternalStorage(DeclRefExp->getDecl());
|
|
|
|
FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
|
|
SourceLocation(),
|
|
&Context->Idents.get("__forwarding"),
|
|
Context->VoidPtrTy, nullptr,
|
|
/*BitWidth=*/nullptr, /*Mutable=*/true,
|
|
ICIS_NoInit);
|
|
MemberExpr *ME = MemberExpr::CreateImplicit(
|
|
*Context, DeclRefExp, isArrow, FD, FD->getType(), VK_LValue, OK_Ordinary);
|
|
|
|
StringRef Name = VD->getName();
|
|
FD = FieldDecl::Create(*Context, nullptr, SourceLocation(), SourceLocation(),
|
|
&Context->Idents.get(Name),
|
|
Context->VoidPtrTy, nullptr,
|
|
/*BitWidth=*/nullptr, /*Mutable=*/true,
|
|
ICIS_NoInit);
|
|
ME = MemberExpr::CreateImplicit(*Context, ME, true, FD, DeclRefExp->getType(),
|
|
VK_LValue, OK_Ordinary);
|
|
|
|
// Need parens to enforce precedence.
|
|
ParenExpr *PE = new (Context) ParenExpr(DeclRefExp->getExprLoc(),
|
|
DeclRefExp->getExprLoc(),
|
|
ME);
|
|
ReplaceStmt(DeclRefExp, PE);
|
|
return PE;
|
|
}
|
|
|
|
// Rewrites the imported local variable V with external storage
|
|
// (static, extern, etc.) as *V
|
|
//
|
|
Stmt *RewriteModernObjC::RewriteLocalVariableExternalStorage(DeclRefExpr *DRE) {
|
|
ValueDecl *VD = DRE->getDecl();
|
|
if (VarDecl *Var = dyn_cast<VarDecl>(VD))
|
|
if (!ImportedLocalExternalDecls.count(Var))
|
|
return DRE;
|
|
Expr *Exp = new (Context) UnaryOperator(DRE, UO_Deref, DRE->getType(),
|
|
VK_LValue, OK_Ordinary,
|
|
DRE->getLocation(), false);
|
|
// Need parens to enforce precedence.
|
|
ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
|
|
Exp);
|
|
ReplaceStmt(DRE, PE);
|
|
return PE;
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteCastExpr(CStyleCastExpr *CE) {
|
|
SourceLocation LocStart = CE->getLParenLoc();
|
|
SourceLocation LocEnd = CE->getRParenLoc();
|
|
|
|
// Need to avoid trying to rewrite synthesized casts.
|
|
if (LocStart.isInvalid())
|
|
return;
|
|
// Need to avoid trying to rewrite casts contained in macros.
|
|
if (!Rewriter::isRewritable(LocStart) || !Rewriter::isRewritable(LocEnd))
|
|
return;
|
|
|
|
const char *startBuf = SM->getCharacterData(LocStart);
|
|
const char *endBuf = SM->getCharacterData(LocEnd);
|
|
QualType QT = CE->getType();
|
|
const Type* TypePtr = QT->getAs<Type>();
|
|
if (isa<TypeOfExprType>(TypePtr)) {
|
|
const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
|
|
QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
|
|
std::string TypeAsString = "(";
|
|
RewriteBlockPointerType(TypeAsString, QT);
|
|
TypeAsString += ")";
|
|
ReplaceText(LocStart, endBuf-startBuf+1, TypeAsString);
|
|
return;
|
|
}
|
|
// advance the location to startArgList.
|
|
const char *argPtr = startBuf;
|
|
|
|
while (*argPtr++ && (argPtr < endBuf)) {
|
|
switch (*argPtr) {
|
|
case '^':
|
|
// Replace the '^' with '*'.
|
|
LocStart = LocStart.getLocWithOffset(argPtr-startBuf);
|
|
ReplaceText(LocStart, 1, "*");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteImplicitCastObjCExpr(CastExpr *IC) {
|
|
CastKind CastKind = IC->getCastKind();
|
|
if (CastKind != CK_BlockPointerToObjCPointerCast &&
|
|
CastKind != CK_AnyPointerToBlockPointerCast)
|
|
return;
|
|
|
|
QualType QT = IC->getType();
|
|
(void)convertBlockPointerToFunctionPointer(QT);
|
|
std::string TypeString(QT.getAsString(Context->getPrintingPolicy()));
|
|
std::string Str = "(";
|
|
Str += TypeString;
|
|
Str += ")";
|
|
InsertText(IC->getSubExpr()->getBeginLoc(), Str);
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteBlockPointerFunctionArgs(FunctionDecl *FD) {
|
|
SourceLocation DeclLoc = FD->getLocation();
|
|
unsigned parenCount = 0;
|
|
|
|
// We have 1 or more arguments that have closure pointers.
|
|
const char *startBuf = SM->getCharacterData(DeclLoc);
|
|
const char *startArgList = strchr(startBuf, '(');
|
|
|
|
assert((*startArgList == '(') && "Rewriter fuzzy parser confused");
|
|
|
|
parenCount++;
|
|
// advance the location to startArgList.
|
|
DeclLoc = DeclLoc.getLocWithOffset(startArgList-startBuf);
|
|
assert((DeclLoc.isValid()) && "Invalid DeclLoc");
|
|
|
|
const char *argPtr = startArgList;
|
|
|
|
while (*argPtr++ && parenCount) {
|
|
switch (*argPtr) {
|
|
case '^':
|
|
// Replace the '^' with '*'.
|
|
DeclLoc = DeclLoc.getLocWithOffset(argPtr-startArgList);
|
|
ReplaceText(DeclLoc, 1, "*");
|
|
break;
|
|
case '(':
|
|
parenCount++;
|
|
break;
|
|
case ')':
|
|
parenCount--;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool RewriteModernObjC::PointerTypeTakesAnyBlockArguments(QualType QT) {
|
|
const FunctionProtoType *FTP;
|
|
const PointerType *PT = QT->getAs<PointerType>();
|
|
if (PT) {
|
|
FTP = PT->getPointeeType()->getAs<FunctionProtoType>();
|
|
} else {
|
|
const BlockPointerType *BPT = QT->getAs<BlockPointerType>();
|
|
assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type");
|
|
FTP = BPT->getPointeeType()->getAs<FunctionProtoType>();
|
|
}
|
|
if (FTP) {
|
|
for (const auto &I : FTP->param_types())
|
|
if (isTopLevelBlockPointerType(I))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool RewriteModernObjC::PointerTypeTakesAnyObjCQualifiedType(QualType QT) {
|
|
const FunctionProtoType *FTP;
|
|
const PointerType *PT = QT->getAs<PointerType>();
|
|
if (PT) {
|
|
FTP = PT->getPointeeType()->getAs<FunctionProtoType>();
|
|
} else {
|
|
const BlockPointerType *BPT = QT->getAs<BlockPointerType>();
|
|
assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type");
|
|
FTP = BPT->getPointeeType()->getAs<FunctionProtoType>();
|
|
}
|
|
if (FTP) {
|
|
for (const auto &I : FTP->param_types()) {
|
|
if (I->isObjCQualifiedIdType())
|
|
return true;
|
|
if (I->isObjCObjectPointerType() &&
|
|
I->getPointeeType()->isObjCQualifiedInterfaceType())
|
|
return true;
|
|
}
|
|
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void RewriteModernObjC::GetExtentOfArgList(const char *Name, const char *&LParen,
|
|
const char *&RParen) {
|
|
const char *argPtr = strchr(Name, '(');
|
|
assert((*argPtr == '(') && "Rewriter fuzzy parser confused");
|
|
|
|
LParen = argPtr; // output the start.
|
|
argPtr++; // skip past the left paren.
|
|
unsigned parenCount = 1;
|
|
|
|
while (*argPtr && parenCount) {
|
|
switch (*argPtr) {
|
|
case '(': parenCount++; break;
|
|
case ')': parenCount--; break;
|
|
default: break;
|
|
}
|
|
if (parenCount) argPtr++;
|
|
}
|
|
assert((*argPtr == ')') && "Rewriter fuzzy parser confused");
|
|
RParen = argPtr; // output the end
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteBlockPointerDecl(NamedDecl *ND) {
|
|
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
|
|
RewriteBlockPointerFunctionArgs(FD);
|
|
return;
|
|
}
|
|
// Handle Variables and Typedefs.
|
|
SourceLocation DeclLoc = ND->getLocation();
|
|
QualType DeclT;
|
|
if (VarDecl *VD = dyn_cast<VarDecl>(ND))
|
|
DeclT = VD->getType();
|
|
else if (TypedefNameDecl *TDD = dyn_cast<TypedefNameDecl>(ND))
|
|
DeclT = TDD->getUnderlyingType();
|
|
else if (FieldDecl *FD = dyn_cast<FieldDecl>(ND))
|
|
DeclT = FD->getType();
|
|
else
|
|
llvm_unreachable("RewriteBlockPointerDecl(): Decl type not yet handled");
|
|
|
|
const char *startBuf = SM->getCharacterData(DeclLoc);
|
|
const char *endBuf = startBuf;
|
|
// scan backward (from the decl location) for the end of the previous decl.
|
|
while (*startBuf != '^' && *startBuf != ';' && startBuf != MainFileStart)
|
|
startBuf--;
|
|
SourceLocation Start = DeclLoc.getLocWithOffset(startBuf-endBuf);
|
|
std::string buf;
|
|
unsigned OrigLength=0;
|
|
// *startBuf != '^' if we are dealing with a pointer to function that
|
|
// may take block argument types (which will be handled below).
|
|
if (*startBuf == '^') {
|
|
// Replace the '^' with '*', computing a negative offset.
|
|
buf = '*';
|
|
startBuf++;
|
|
OrigLength++;
|
|
}
|
|
while (*startBuf != ')') {
|
|
buf += *startBuf;
|
|
startBuf++;
|
|
OrigLength++;
|
|
}
|
|
buf += ')';
|
|
OrigLength++;
|
|
|
|
if (PointerTypeTakesAnyBlockArguments(DeclT) ||
|
|
PointerTypeTakesAnyObjCQualifiedType(DeclT)) {
|
|
// Replace the '^' with '*' for arguments.
|
|
// Replace id<P> with id/*<>*/
|
|
DeclLoc = ND->getLocation();
|
|
startBuf = SM->getCharacterData(DeclLoc);
|
|
const char *argListBegin, *argListEnd;
|
|
GetExtentOfArgList(startBuf, argListBegin, argListEnd);
|
|
while (argListBegin < argListEnd) {
|
|
if (*argListBegin == '^')
|
|
buf += '*';
|
|
else if (*argListBegin == '<') {
|
|
buf += "/*";
|
|
buf += *argListBegin++;
|
|
OrigLength++;
|
|
while (*argListBegin != '>') {
|
|
buf += *argListBegin++;
|
|
OrigLength++;
|
|
}
|
|
buf += *argListBegin;
|
|
buf += "*/";
|
|
}
|
|
else
|
|
buf += *argListBegin;
|
|
argListBegin++;
|
|
OrigLength++;
|
|
}
|
|
buf += ')';
|
|
OrigLength++;
|
|
}
|
|
ReplaceText(Start, OrigLength, buf);
|
|
}
|
|
|
|
/// SynthesizeByrefCopyDestroyHelper - This routine synthesizes:
|
|
/// void __Block_byref_id_object_copy(struct Block_byref_id_object *dst,
|
|
/// struct Block_byref_id_object *src) {
|
|
/// _Block_object_assign (&_dest->object, _src->object,
|
|
/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
|
|
/// [|BLOCK_FIELD_IS_WEAK]) // object
|
|
/// _Block_object_assign(&_dest->object, _src->object,
|
|
/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
|
|
/// [|BLOCK_FIELD_IS_WEAK]) // block
|
|
/// }
|
|
/// And:
|
|
/// void __Block_byref_id_object_dispose(struct Block_byref_id_object *_src) {
|
|
/// _Block_object_dispose(_src->object,
|
|
/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
|
|
/// [|BLOCK_FIELD_IS_WEAK]) // object
|
|
/// _Block_object_dispose(_src->object,
|
|
/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
|
|
/// [|BLOCK_FIELD_IS_WEAK]) // block
|
|
/// }
|
|
|
|
std::string RewriteModernObjC::SynthesizeByrefCopyDestroyHelper(VarDecl *VD,
|
|
int flag) {
|
|
std::string S;
|
|
if (CopyDestroyCache.count(flag))
|
|
return S;
|
|
CopyDestroyCache.insert(flag);
|
|
S = "static void __Block_byref_id_object_copy_";
|
|
S += utostr(flag);
|
|
S += "(void *dst, void *src) {\n";
|
|
|
|
// offset into the object pointer is computed as:
|
|
// void * + void* + int + int + void* + void *
|
|
unsigned IntSize =
|
|
static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
|
|
unsigned VoidPtrSize =
|
|
static_cast<unsigned>(Context->getTypeSize(Context->VoidPtrTy));
|
|
|
|
unsigned offset = (VoidPtrSize*4 + IntSize + IntSize)/Context->getCharWidth();
|
|
S += " _Block_object_assign((char*)dst + ";
|
|
S += utostr(offset);
|
|
S += ", *(void * *) ((char*)src + ";
|
|
S += utostr(offset);
|
|
S += "), ";
|
|
S += utostr(flag);
|
|
S += ");\n}\n";
|
|
|
|
S += "static void __Block_byref_id_object_dispose_";
|
|
S += utostr(flag);
|
|
S += "(void *src) {\n";
|
|
S += " _Block_object_dispose(*(void * *) ((char*)src + ";
|
|
S += utostr(offset);
|
|
S += "), ";
|
|
S += utostr(flag);
|
|
S += ");\n}\n";
|
|
return S;
|
|
}
|
|
|
|
/// RewriteByRefVar - For each __block typex ND variable this routine transforms
|
|
/// the declaration into:
|
|
/// struct __Block_byref_ND {
|
|
/// void *__isa; // NULL for everything except __weak pointers
|
|
/// struct __Block_byref_ND *__forwarding;
|
|
/// int32_t __flags;
|
|
/// int32_t __size;
|
|
/// void *__Block_byref_id_object_copy; // If variable is __block ObjC object
|
|
/// void *__Block_byref_id_object_dispose; // If variable is __block ObjC object
|
|
/// typex ND;
|
|
/// };
|
|
///
|
|
/// It then replaces declaration of ND variable with:
|
|
/// struct __Block_byref_ND ND = {__isa=0B, __forwarding=&ND, __flags=some_flag,
|
|
/// __size=sizeof(struct __Block_byref_ND),
|
|
/// ND=initializer-if-any};
|
|
///
|
|
///
|
|
void RewriteModernObjC::RewriteByRefVar(VarDecl *ND, bool firstDecl,
|
|
bool lastDecl) {
|
|
int flag = 0;
|
|
int isa = 0;
|
|
SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
|
|
if (DeclLoc.isInvalid())
|
|
// If type location is missing, it is because of missing type (a warning).
|
|
// Use variable's location which is good for this case.
|
|
DeclLoc = ND->getLocation();
|
|
const char *startBuf = SM->getCharacterData(DeclLoc);
|
|
SourceLocation X = ND->getEndLoc();
|
|
X = SM->getExpansionLoc(X);
|
|
const char *endBuf = SM->getCharacterData(X);
|
|
std::string Name(ND->getNameAsString());
|
|
std::string ByrefType;
|
|
RewriteByRefString(ByrefType, Name, ND, true);
|
|
ByrefType += " {\n";
|
|
ByrefType += " void *__isa;\n";
|
|
RewriteByRefString(ByrefType, Name, ND);
|
|
ByrefType += " *__forwarding;\n";
|
|
ByrefType += " int __flags;\n";
|
|
ByrefType += " int __size;\n";
|
|
// Add void *__Block_byref_id_object_copy;
|
|
// void *__Block_byref_id_object_dispose; if needed.
|
|
QualType Ty = ND->getType();
|
|
bool HasCopyAndDispose = Context->BlockRequiresCopying(Ty, ND);
|
|
if (HasCopyAndDispose) {
|
|
ByrefType += " void (*__Block_byref_id_object_copy)(void*, void*);\n";
|
|
ByrefType += " void (*__Block_byref_id_object_dispose)(void*);\n";
|
|
}
|
|
|
|
QualType T = Ty;
|
|
(void)convertBlockPointerToFunctionPointer(T);
|
|
T.getAsStringInternal(Name, Context->getPrintingPolicy());
|
|
|
|
ByrefType += " " + Name + ";\n";
|
|
ByrefType += "};\n";
|
|
// Insert this type in global scope. It is needed by helper function.
|
|
SourceLocation FunLocStart;
|
|
if (CurFunctionDef)
|
|
FunLocStart = getFunctionSourceLocation(*this, CurFunctionDef);
|
|
else {
|
|
assert(CurMethodDef && "RewriteByRefVar - CurMethodDef is null");
|
|
FunLocStart = CurMethodDef->getBeginLoc();
|
|
}
|
|
InsertText(FunLocStart, ByrefType);
|
|
|
|
if (Ty.isObjCGCWeak()) {
|
|
flag |= BLOCK_FIELD_IS_WEAK;
|
|
isa = 1;
|
|
}
|
|
if (HasCopyAndDispose) {
|
|
flag = BLOCK_BYREF_CALLER;
|
|
QualType Ty = ND->getType();
|
|
// FIXME. Handle __weak variable (BLOCK_FIELD_IS_WEAK) as well.
|
|
if (Ty->isBlockPointerType())
|
|
flag |= BLOCK_FIELD_IS_BLOCK;
|
|
else
|
|
flag |= BLOCK_FIELD_IS_OBJECT;
|
|
std::string HF = SynthesizeByrefCopyDestroyHelper(ND, flag);
|
|
if (!HF.empty())
|
|
Preamble += HF;
|
|
}
|
|
|
|
// struct __Block_byref_ND ND =
|
|
// {0, &ND, some_flag, __size=sizeof(struct __Block_byref_ND),
|
|
// initializer-if-any};
|
|
bool hasInit = (ND->getInit() != nullptr);
|
|
// FIXME. rewriter does not support __block c++ objects which
|
|
// require construction.
|
|
if (hasInit)
|
|
if (CXXConstructExpr *CExp = dyn_cast<CXXConstructExpr>(ND->getInit())) {
|
|
CXXConstructorDecl *CXXDecl = CExp->getConstructor();
|
|
if (CXXDecl && CXXDecl->isDefaultConstructor())
|
|
hasInit = false;
|
|
}
|
|
|
|
unsigned flags = 0;
|
|
if (HasCopyAndDispose)
|
|
flags |= BLOCK_HAS_COPY_DISPOSE;
|
|
Name = ND->getNameAsString();
|
|
ByrefType.clear();
|
|
RewriteByRefString(ByrefType, Name, ND);
|
|
std::string ForwardingCastType("(");
|
|
ForwardingCastType += ByrefType + " *)";
|
|
ByrefType += " " + Name + " = {(void*)";
|
|
ByrefType += utostr(isa);
|
|
ByrefType += "," + ForwardingCastType + "&" + Name + ", ";
|
|
ByrefType += utostr(flags);
|
|
ByrefType += ", ";
|
|
ByrefType += "sizeof(";
|
|
RewriteByRefString(ByrefType, Name, ND);
|
|
ByrefType += ")";
|
|
if (HasCopyAndDispose) {
|
|
ByrefType += ", __Block_byref_id_object_copy_";
|
|
ByrefType += utostr(flag);
|
|
ByrefType += ", __Block_byref_id_object_dispose_";
|
|
ByrefType += utostr(flag);
|
|
}
|
|
|
|
if (!firstDecl) {
|
|
// In multiple __block declarations, and for all but 1st declaration,
|
|
// find location of the separating comma. This would be start location
|
|
// where new text is to be inserted.
|
|
DeclLoc = ND->getLocation();
|
|
const char *startDeclBuf = SM->getCharacterData(DeclLoc);
|
|
const char *commaBuf = startDeclBuf;
|
|
while (*commaBuf != ',')
|
|
commaBuf--;
|
|
assert((*commaBuf == ',') && "RewriteByRefVar: can't find ','");
|
|
DeclLoc = DeclLoc.getLocWithOffset(commaBuf - startDeclBuf);
|
|
startBuf = commaBuf;
|
|
}
|
|
|
|
if (!hasInit) {
|
|
ByrefType += "};\n";
|
|
unsigned nameSize = Name.size();
|
|
// for block or function pointer declaration. Name is already
|
|
// part of the declaration.
|
|
if (Ty->isBlockPointerType() || Ty->isFunctionPointerType())
|
|
nameSize = 1;
|
|
ReplaceText(DeclLoc, endBuf-startBuf+nameSize, ByrefType);
|
|
}
|
|
else {
|
|
ByrefType += ", ";
|
|
SourceLocation startLoc;
|
|
Expr *E = ND->getInit();
|
|
if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
|
|
startLoc = ECE->getLParenLoc();
|
|
else
|
|
startLoc = E->getBeginLoc();
|
|
startLoc = SM->getExpansionLoc(startLoc);
|
|
endBuf = SM->getCharacterData(startLoc);
|
|
ReplaceText(DeclLoc, endBuf-startBuf, ByrefType);
|
|
|
|
const char separator = lastDecl ? ';' : ',';
|
|
const char *startInitializerBuf = SM->getCharacterData(startLoc);
|
|
const char *separatorBuf = strchr(startInitializerBuf, separator);
|
|
assert((*separatorBuf == separator) &&
|
|
"RewriteByRefVar: can't find ';' or ','");
|
|
SourceLocation separatorLoc =
|
|
startLoc.getLocWithOffset(separatorBuf-startInitializerBuf);
|
|
|
|
InsertText(separatorLoc, lastDecl ? "}" : "};\n");
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::CollectBlockDeclRefInfo(BlockExpr *Exp) {
|
|
// Add initializers for any closure decl refs.
|
|
GetBlockDeclRefExprs(Exp->getBody());
|
|
if (BlockDeclRefs.size()) {
|
|
// Unique all "by copy" declarations.
|
|
for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
|
|
if (!BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>()) {
|
|
if (!BlockByCopyDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) {
|
|
BlockByCopyDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl());
|
|
BlockByCopyDecls.push_back(BlockDeclRefs[i]->getDecl());
|
|
}
|
|
}
|
|
// Unique all "by ref" declarations.
|
|
for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
|
|
if (BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>()) {
|
|
if (!BlockByRefDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) {
|
|
BlockByRefDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl());
|
|
BlockByRefDecls.push_back(BlockDeclRefs[i]->getDecl());
|
|
}
|
|
}
|
|
// Find any imported blocks...they will need special attention.
|
|
for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
|
|
if (BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>() ||
|
|
BlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
|
|
BlockDeclRefs[i]->getType()->isBlockPointerType())
|
|
ImportedBlockDecls.insert(BlockDeclRefs[i]->getDecl());
|
|
}
|
|
}
|
|
|
|
FunctionDecl *RewriteModernObjC::SynthBlockInitFunctionDecl(StringRef name) {
|
|
IdentifierInfo *ID = &Context->Idents.get(name);
|
|
QualType FType = Context->getFunctionNoProtoType(Context->VoidPtrTy);
|
|
return FunctionDecl::Create(*Context, TUDecl, SourceLocation(),
|
|
SourceLocation(), ID, FType, nullptr, SC_Extern,
|
|
false, false);
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::SynthBlockInitExpr(BlockExpr *Exp,
|
|
const SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs) {
|
|
const BlockDecl *block = Exp->getBlockDecl();
|
|
|
|
Blocks.push_back(Exp);
|
|
|
|
CollectBlockDeclRefInfo(Exp);
|
|
|
|
// Add inner imported variables now used in current block.
|
|
int countOfInnerDecls = 0;
|
|
if (!InnerBlockDeclRefs.empty()) {
|
|
for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++) {
|
|
DeclRefExpr *Exp = InnerBlockDeclRefs[i];
|
|
ValueDecl *VD = Exp->getDecl();
|
|
if (!VD->hasAttr<BlocksAttr>() && !BlockByCopyDeclsPtrSet.count(VD)) {
|
|
// We need to save the copied-in variables in nested
|
|
// blocks because it is needed at the end for some of the API generations.
|
|
// See SynthesizeBlockLiterals routine.
|
|
InnerDeclRefs.push_back(Exp); countOfInnerDecls++;
|
|
BlockDeclRefs.push_back(Exp);
|
|
BlockByCopyDeclsPtrSet.insert(VD);
|
|
BlockByCopyDecls.push_back(VD);
|
|
}
|
|
if (VD->hasAttr<BlocksAttr>() && !BlockByRefDeclsPtrSet.count(VD)) {
|
|
InnerDeclRefs.push_back(Exp); countOfInnerDecls++;
|
|
BlockDeclRefs.push_back(Exp);
|
|
BlockByRefDeclsPtrSet.insert(VD);
|
|
BlockByRefDecls.push_back(VD);
|
|
}
|
|
}
|
|
// Find any imported blocks...they will need special attention.
|
|
for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++)
|
|
if (InnerBlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>() ||
|
|
InnerBlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
|
|
InnerBlockDeclRefs[i]->getType()->isBlockPointerType())
|
|
ImportedBlockDecls.insert(InnerBlockDeclRefs[i]->getDecl());
|
|
}
|
|
InnerDeclRefsCount.push_back(countOfInnerDecls);
|
|
|
|
std::string FuncName;
|
|
|
|
if (CurFunctionDef)
|
|
FuncName = CurFunctionDef->getNameAsString();
|
|
else if (CurMethodDef)
|
|
BuildUniqueMethodName(FuncName, CurMethodDef);
|
|
else if (GlobalVarDecl)
|
|
FuncName = std::string(GlobalVarDecl->getNameAsString());
|
|
|
|
bool GlobalBlockExpr =
|
|
block->getDeclContext()->getRedeclContext()->isFileContext();
|
|
|
|
if (GlobalBlockExpr && !GlobalVarDecl) {
|
|
Diags.Report(block->getLocation(), GlobalBlockRewriteFailedDiag);
|
|
GlobalBlockExpr = false;
|
|
}
|
|
|
|
std::string BlockNumber = utostr(Blocks.size()-1);
|
|
|
|
std::string Func = "__" + FuncName + "_block_func_" + BlockNumber;
|
|
|
|
// Get a pointer to the function type so we can cast appropriately.
|
|
QualType BFT = convertFunctionTypeOfBlocks(Exp->getFunctionType());
|
|
QualType FType = Context->getPointerType(BFT);
|
|
|
|
FunctionDecl *FD;
|
|
Expr *NewRep;
|
|
|
|
// Simulate a constructor call...
|
|
std::string Tag;
|
|
|
|
if (GlobalBlockExpr)
|
|
Tag = "__global_";
|
|
else
|
|
Tag = "__";
|
|
Tag += FuncName + "_block_impl_" + BlockNumber;
|
|
|
|
FD = SynthBlockInitFunctionDecl(Tag);
|
|
DeclRefExpr *DRE = new (Context)
|
|
DeclRefExpr(*Context, FD, false, FType, VK_RValue, SourceLocation());
|
|
|
|
SmallVector<Expr*, 4> InitExprs;
|
|
|
|
// Initialize the block function.
|
|
FD = SynthBlockInitFunctionDecl(Func);
|
|
DeclRefExpr *Arg = new (Context) DeclRefExpr(
|
|
*Context, FD, false, FD->getType(), VK_LValue, SourceLocation());
|
|
CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
|
|
CK_BitCast, Arg);
|
|
InitExprs.push_back(castExpr);
|
|
|
|
// Initialize the block descriptor.
|
|
std::string DescData = "__" + FuncName + "_block_desc_" + BlockNumber + "_DATA";
|
|
|
|
VarDecl *NewVD = VarDecl::Create(
|
|
*Context, TUDecl, SourceLocation(), SourceLocation(),
|
|
&Context->Idents.get(DescData), Context->VoidPtrTy, nullptr, SC_Static);
|
|
UnaryOperator *DescRefExpr = new (Context) UnaryOperator(
|
|
new (Context) DeclRefExpr(*Context, NewVD, false, Context->VoidPtrTy,
|
|
VK_LValue, SourceLocation()),
|
|
UO_AddrOf, Context->getPointerType(Context->VoidPtrTy), VK_RValue,
|
|
OK_Ordinary, SourceLocation(), false);
|
|
InitExprs.push_back(DescRefExpr);
|
|
|
|
// Add initializers for any closure decl refs.
|
|
if (BlockDeclRefs.size()) {
|
|
Expr *Exp;
|
|
// Output all "by copy" declarations.
|
|
for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
|
|
E = BlockByCopyDecls.end(); I != E; ++I) {
|
|
if (isObjCType((*I)->getType())) {
|
|
// FIXME: Conform to ABI ([[obj retain] autorelease]).
|
|
FD = SynthBlockInitFunctionDecl((*I)->getName());
|
|
Exp = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(),
|
|
VK_LValue, SourceLocation());
|
|
if (HasLocalVariableExternalStorage(*I)) {
|
|
QualType QT = (*I)->getType();
|
|
QT = Context->getPointerType(QT);
|
|
Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT, VK_RValue,
|
|
OK_Ordinary, SourceLocation(),
|
|
false);
|
|
}
|
|
} else if (isTopLevelBlockPointerType((*I)->getType())) {
|
|
FD = SynthBlockInitFunctionDecl((*I)->getName());
|
|
Arg = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(),
|
|
VK_LValue, SourceLocation());
|
|
Exp = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
|
|
CK_BitCast, Arg);
|
|
} else {
|
|
FD = SynthBlockInitFunctionDecl((*I)->getName());
|
|
Exp = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(),
|
|
VK_LValue, SourceLocation());
|
|
if (HasLocalVariableExternalStorage(*I)) {
|
|
QualType QT = (*I)->getType();
|
|
QT = Context->getPointerType(QT);
|
|
Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT, VK_RValue,
|
|
OK_Ordinary, SourceLocation(),
|
|
false);
|
|
}
|
|
|
|
}
|
|
InitExprs.push_back(Exp);
|
|
}
|
|
// Output all "by ref" declarations.
|
|
for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
|
|
E = BlockByRefDecls.end(); I != E; ++I) {
|
|
ValueDecl *ND = (*I);
|
|
std::string Name(ND->getNameAsString());
|
|
std::string RecName;
|
|
RewriteByRefString(RecName, Name, ND, true);
|
|
IdentifierInfo *II = &Context->Idents.get(RecName.c_str()
|
|
+ sizeof("struct"));
|
|
RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
|
|
SourceLocation(), SourceLocation(),
|
|
II);
|
|
assert(RD && "SynthBlockInitExpr(): Can't find RecordDecl");
|
|
QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
|
|
|
|
FD = SynthBlockInitFunctionDecl((*I)->getName());
|
|
Exp = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(),
|
|
VK_LValue, SourceLocation());
|
|
bool isNestedCapturedVar = false;
|
|
if (block)
|
|
for (const auto &CI : block->captures()) {
|
|
const VarDecl *variable = CI.getVariable();
|
|
if (variable == ND && CI.isNested()) {
|
|
assert (CI.isByRef() &&
|
|
"SynthBlockInitExpr - captured block variable is not byref");
|
|
isNestedCapturedVar = true;
|
|
break;
|
|
}
|
|
}
|
|
// captured nested byref variable has its address passed. Do not take
|
|
// its address again.
|
|
if (!isNestedCapturedVar)
|
|
Exp = new (Context) UnaryOperator(Exp, UO_AddrOf,
|
|
Context->getPointerType(Exp->getType()),
|
|
VK_RValue, OK_Ordinary, SourceLocation(),
|
|
false);
|
|
Exp = NoTypeInfoCStyleCastExpr(Context, castT, CK_BitCast, Exp);
|
|
InitExprs.push_back(Exp);
|
|
}
|
|
}
|
|
if (ImportedBlockDecls.size()) {
|
|
// generate BLOCK_HAS_COPY_DISPOSE(have helper funcs) | BLOCK_HAS_DESCRIPTOR
|
|
int flag = (BLOCK_HAS_COPY_DISPOSE | BLOCK_HAS_DESCRIPTOR);
|
|
unsigned IntSize =
|
|
static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
|
|
Expr *FlagExp = IntegerLiteral::Create(*Context, llvm::APInt(IntSize, flag),
|
|
Context->IntTy, SourceLocation());
|
|
InitExprs.push_back(FlagExp);
|
|
}
|
|
NewRep = CallExpr::Create(*Context, DRE, InitExprs, FType, VK_LValue,
|
|
SourceLocation());
|
|
|
|
if (GlobalBlockExpr) {
|
|
assert (!GlobalConstructionExp &&
|
|
"SynthBlockInitExpr - GlobalConstructionExp must be null");
|
|
GlobalConstructionExp = NewRep;
|
|
NewRep = DRE;
|
|
}
|
|
|
|
NewRep = new (Context) UnaryOperator(NewRep, UO_AddrOf,
|
|
Context->getPointerType(NewRep->getType()),
|
|
VK_RValue, OK_Ordinary, SourceLocation(), false);
|
|
NewRep = NoTypeInfoCStyleCastExpr(Context, FType, CK_BitCast,
|
|
NewRep);
|
|
// Put Paren around the call.
|
|
NewRep = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
|
|
NewRep);
|
|
|
|
BlockDeclRefs.clear();
|
|
BlockByRefDecls.clear();
|
|
BlockByRefDeclsPtrSet.clear();
|
|
BlockByCopyDecls.clear();
|
|
BlockByCopyDeclsPtrSet.clear();
|
|
ImportedBlockDecls.clear();
|
|
return NewRep;
|
|
}
|
|
|
|
bool RewriteModernObjC::IsDeclStmtInForeachHeader(DeclStmt *DS) {
|
|
if (const ObjCForCollectionStmt * CS =
|
|
dyn_cast<ObjCForCollectionStmt>(Stmts.back()))
|
|
return CS->getElement() == DS;
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Function Body / Expression rewriting
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
Stmt *RewriteModernObjC::RewriteFunctionBodyOrGlobalInitializer(Stmt *S) {
|
|
if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
|
|
isa<DoStmt>(S) || isa<ForStmt>(S))
|
|
Stmts.push_back(S);
|
|
else if (isa<ObjCForCollectionStmt>(S)) {
|
|
Stmts.push_back(S);
|
|
ObjCBcLabelNo.push_back(++BcLabelCount);
|
|
}
|
|
|
|
// Pseudo-object operations and ivar references need special
|
|
// treatment because we're going to recursively rewrite them.
|
|
if (PseudoObjectExpr *PseudoOp = dyn_cast<PseudoObjectExpr>(S)) {
|
|
if (isa<BinaryOperator>(PseudoOp->getSyntacticForm())) {
|
|
return RewritePropertyOrImplicitSetter(PseudoOp);
|
|
} else {
|
|
return RewritePropertyOrImplicitGetter(PseudoOp);
|
|
}
|
|
} else if (ObjCIvarRefExpr *IvarRefExpr = dyn_cast<ObjCIvarRefExpr>(S)) {
|
|
return RewriteObjCIvarRefExpr(IvarRefExpr);
|
|
}
|
|
else if (isa<OpaqueValueExpr>(S))
|
|
S = cast<OpaqueValueExpr>(S)->getSourceExpr();
|
|
|
|
SourceRange OrigStmtRange = S->getSourceRange();
|
|
|
|
// Perform a bottom up rewrite of all children.
|
|
for (Stmt *&childStmt : S->children())
|
|
if (childStmt) {
|
|
Stmt *newStmt = RewriteFunctionBodyOrGlobalInitializer(childStmt);
|
|
if (newStmt) {
|
|
childStmt = newStmt;
|
|
}
|
|
}
|
|
|
|
if (BlockExpr *BE = dyn_cast<BlockExpr>(S)) {
|
|
SmallVector<DeclRefExpr *, 8> InnerBlockDeclRefs;
|
|
llvm::SmallPtrSet<const DeclContext *, 8> InnerContexts;
|
|
InnerContexts.insert(BE->getBlockDecl());
|
|
ImportedLocalExternalDecls.clear();
|
|
GetInnerBlockDeclRefExprs(BE->getBody(),
|
|
InnerBlockDeclRefs, InnerContexts);
|
|
// Rewrite the block body in place.
|
|
Stmt *SaveCurrentBody = CurrentBody;
|
|
CurrentBody = BE->getBody();
|
|
PropParentMap = nullptr;
|
|
// block literal on rhs of a property-dot-sytax assignment
|
|
// must be replaced by its synthesize ast so getRewrittenText
|
|
// works as expected. In this case, what actually ends up on RHS
|
|
// is the blockTranscribed which is the helper function for the
|
|
// block literal; as in: self.c = ^() {[ace ARR];};
|
|
bool saveDisableReplaceStmt = DisableReplaceStmt;
|
|
DisableReplaceStmt = false;
|
|
RewriteFunctionBodyOrGlobalInitializer(BE->getBody());
|
|
DisableReplaceStmt = saveDisableReplaceStmt;
|
|
CurrentBody = SaveCurrentBody;
|
|
PropParentMap = nullptr;
|
|
ImportedLocalExternalDecls.clear();
|
|
// Now we snarf the rewritten text and stash it away for later use.
|
|
std::string Str = Rewrite.getRewrittenText(BE->getSourceRange());
|
|
RewrittenBlockExprs[BE] = Str;
|
|
|
|
Stmt *blockTranscribed = SynthBlockInitExpr(BE, InnerBlockDeclRefs);
|
|
|
|
//blockTranscribed->dump();
|
|
ReplaceStmt(S, blockTranscribed);
|
|
return blockTranscribed;
|
|
}
|
|
// Handle specific things.
|
|
if (ObjCEncodeExpr *AtEncode = dyn_cast<ObjCEncodeExpr>(S))
|
|
return RewriteAtEncode(AtEncode);
|
|
|
|
if (ObjCSelectorExpr *AtSelector = dyn_cast<ObjCSelectorExpr>(S))
|
|
return RewriteAtSelector(AtSelector);
|
|
|
|
if (ObjCStringLiteral *AtString = dyn_cast<ObjCStringLiteral>(S))
|
|
return RewriteObjCStringLiteral(AtString);
|
|
|
|
if (ObjCBoolLiteralExpr *BoolLitExpr = dyn_cast<ObjCBoolLiteralExpr>(S))
|
|
return RewriteObjCBoolLiteralExpr(BoolLitExpr);
|
|
|
|
if (ObjCBoxedExpr *BoxedExpr = dyn_cast<ObjCBoxedExpr>(S))
|
|
return RewriteObjCBoxedExpr(BoxedExpr);
|
|
|
|
if (ObjCArrayLiteral *ArrayLitExpr = dyn_cast<ObjCArrayLiteral>(S))
|
|
return RewriteObjCArrayLiteralExpr(ArrayLitExpr);
|
|
|
|
if (ObjCDictionaryLiteral *DictionaryLitExpr =
|
|
dyn_cast<ObjCDictionaryLiteral>(S))
|
|
return RewriteObjCDictionaryLiteralExpr(DictionaryLitExpr);
|
|
|
|
if (ObjCMessageExpr *MessExpr = dyn_cast<ObjCMessageExpr>(S)) {
|
|
#if 0
|
|
// Before we rewrite it, put the original message expression in a comment.
|
|
SourceLocation startLoc = MessExpr->getBeginLoc();
|
|
SourceLocation endLoc = MessExpr->getEndLoc();
|
|
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
const char *endBuf = SM->getCharacterData(endLoc);
|
|
|
|
std::string messString;
|
|
messString += "// ";
|
|
messString.append(startBuf, endBuf-startBuf+1);
|
|
messString += "\n";
|
|
|
|
// FIXME: Missing definition of
|
|
// InsertText(clang::SourceLocation, char const*, unsigned int).
|
|
// InsertText(startLoc, messString);
|
|
// Tried this, but it didn't work either...
|
|
// ReplaceText(startLoc, 0, messString.c_str(), messString.size());
|
|
#endif
|
|
return RewriteMessageExpr(MessExpr);
|
|
}
|
|
|
|
if (ObjCAutoreleasePoolStmt *StmtAutoRelease =
|
|
dyn_cast<ObjCAutoreleasePoolStmt>(S)) {
|
|
return RewriteObjCAutoreleasePoolStmt(StmtAutoRelease);
|
|
}
|
|
|
|
if (ObjCAtTryStmt *StmtTry = dyn_cast<ObjCAtTryStmt>(S))
|
|
return RewriteObjCTryStmt(StmtTry);
|
|
|
|
if (ObjCAtSynchronizedStmt *StmtTry = dyn_cast<ObjCAtSynchronizedStmt>(S))
|
|
return RewriteObjCSynchronizedStmt(StmtTry);
|
|
|
|
if (ObjCAtThrowStmt *StmtThrow = dyn_cast<ObjCAtThrowStmt>(S))
|
|
return RewriteObjCThrowStmt(StmtThrow);
|
|
|
|
if (ObjCProtocolExpr *ProtocolExp = dyn_cast<ObjCProtocolExpr>(S))
|
|
return RewriteObjCProtocolExpr(ProtocolExp);
|
|
|
|
if (ObjCForCollectionStmt *StmtForCollection =
|
|
dyn_cast<ObjCForCollectionStmt>(S))
|
|
return RewriteObjCForCollectionStmt(StmtForCollection,
|
|
OrigStmtRange.getEnd());
|
|
if (BreakStmt *StmtBreakStmt =
|
|
dyn_cast<BreakStmt>(S))
|
|
return RewriteBreakStmt(StmtBreakStmt);
|
|
if (ContinueStmt *StmtContinueStmt =
|
|
dyn_cast<ContinueStmt>(S))
|
|
return RewriteContinueStmt(StmtContinueStmt);
|
|
|
|
// Need to check for protocol refs (id <P>, Foo <P> *) in variable decls
|
|
// and cast exprs.
|
|
if (DeclStmt *DS = dyn_cast<DeclStmt>(S)) {
|
|
// FIXME: What we're doing here is modifying the type-specifier that
|
|
// precedes the first Decl. In the future the DeclGroup should have
|
|
// a separate type-specifier that we can rewrite.
|
|
// NOTE: We need to avoid rewriting the DeclStmt if it is within
|
|
// the context of an ObjCForCollectionStmt. For example:
|
|
// NSArray *someArray;
|
|
// for (id <FooProtocol> index in someArray) ;
|
|
// This is because RewriteObjCForCollectionStmt() does textual rewriting
|
|
// and it depends on the original text locations/positions.
|
|
if (Stmts.empty() || !IsDeclStmtInForeachHeader(DS))
|
|
RewriteObjCQualifiedInterfaceTypes(*DS->decl_begin());
|
|
|
|
// Blocks rewrite rules.
|
|
for (DeclStmt::decl_iterator DI = DS->decl_begin(), DE = DS->decl_end();
|
|
DI != DE; ++DI) {
|
|
Decl *SD = *DI;
|
|
if (ValueDecl *ND = dyn_cast<ValueDecl>(SD)) {
|
|
if (isTopLevelBlockPointerType(ND->getType()))
|
|
RewriteBlockPointerDecl(ND);
|
|
else if (ND->getType()->isFunctionPointerType())
|
|
CheckFunctionPointerDecl(ND->getType(), ND);
|
|
if (VarDecl *VD = dyn_cast<VarDecl>(SD)) {
|
|
if (VD->hasAttr<BlocksAttr>()) {
|
|
static unsigned uniqueByrefDeclCount = 0;
|
|
assert(!BlockByRefDeclNo.count(ND) &&
|
|
"RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl");
|
|
BlockByRefDeclNo[ND] = uniqueByrefDeclCount++;
|
|
RewriteByRefVar(VD, (DI == DS->decl_begin()), ((DI+1) == DE));
|
|
}
|
|
else
|
|
RewriteTypeOfDecl(VD);
|
|
}
|
|
}
|
|
if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(SD)) {
|
|
if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
|
|
RewriteBlockPointerDecl(TD);
|
|
else if (TD->getUnderlyingType()->isFunctionPointerType())
|
|
CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S))
|
|
RewriteObjCQualifiedInterfaceTypes(CE);
|
|
|
|
if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
|
|
isa<DoStmt>(S) || isa<ForStmt>(S)) {
|
|
assert(!Stmts.empty() && "Statement stack is empty");
|
|
assert ((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) ||
|
|
isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back()))
|
|
&& "Statement stack mismatch");
|
|
Stmts.pop_back();
|
|
}
|
|
// Handle blocks rewriting.
|
|
if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
|
|
ValueDecl *VD = DRE->getDecl();
|
|
if (VD->hasAttr<BlocksAttr>())
|
|
return RewriteBlockDeclRefExpr(DRE);
|
|
if (HasLocalVariableExternalStorage(VD))
|
|
return RewriteLocalVariableExternalStorage(DRE);
|
|
}
|
|
|
|
if (CallExpr *CE = dyn_cast<CallExpr>(S)) {
|
|
if (CE->getCallee()->getType()->isBlockPointerType()) {
|
|
Stmt *BlockCall = SynthesizeBlockCall(CE, CE->getCallee());
|
|
ReplaceStmt(S, BlockCall);
|
|
return BlockCall;
|
|
}
|
|
}
|
|
if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S)) {
|
|
RewriteCastExpr(CE);
|
|
}
|
|
if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(S)) {
|
|
RewriteImplicitCastObjCExpr(ICE);
|
|
}
|
|
#if 0
|
|
|
|
if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(S)) {
|
|
CastExpr *Replacement = new (Context) CastExpr(ICE->getType(),
|
|
ICE->getSubExpr(),
|
|
SourceLocation());
|
|
// Get the new text.
|
|
std::string SStr;
|
|
llvm::raw_string_ostream Buf(SStr);
|
|
Replacement->printPretty(Buf);
|
|
const std::string &Str = Buf.str();
|
|
|
|
printf("CAST = %s\n", &Str[0]);
|
|
InsertText(ICE->getSubExpr()->getBeginLoc(), Str);
|
|
delete S;
|
|
return Replacement;
|
|
}
|
|
#endif
|
|
// Return this stmt unmodified.
|
|
return S;
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteRecordBody(RecordDecl *RD) {
|
|
for (auto *FD : RD->fields()) {
|
|
if (isTopLevelBlockPointerType(FD->getType()))
|
|
RewriteBlockPointerDecl(FD);
|
|
if (FD->getType()->isObjCQualifiedIdType() ||
|
|
FD->getType()->isObjCQualifiedInterfaceType())
|
|
RewriteObjCQualifiedInterfaceTypes(FD);
|
|
}
|
|
}
|
|
|
|
/// HandleDeclInMainFile - This is called for each top-level decl defined in the
|
|
/// main file of the input.
|
|
void RewriteModernObjC::HandleDeclInMainFile(Decl *D) {
|
|
switch (D->getKind()) {
|
|
case Decl::Function: {
|
|
FunctionDecl *FD = cast<FunctionDecl>(D);
|
|
if (FD->isOverloadedOperator())
|
|
return;
|
|
|
|
// Since function prototypes don't have ParmDecl's, we check the function
|
|
// prototype. This enables us to rewrite function declarations and
|
|
// definitions using the same code.
|
|
RewriteBlocksInFunctionProtoType(FD->getType(), FD);
|
|
|
|
if (!FD->isThisDeclarationADefinition())
|
|
break;
|
|
|
|
// FIXME: If this should support Obj-C++, support CXXTryStmt
|
|
if (CompoundStmt *Body = dyn_cast_or_null<CompoundStmt>(FD->getBody())) {
|
|
CurFunctionDef = FD;
|
|
CurrentBody = Body;
|
|
Body =
|
|
cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
|
|
FD->setBody(Body);
|
|
CurrentBody = nullptr;
|
|
if (PropParentMap) {
|
|
delete PropParentMap;
|
|
PropParentMap = nullptr;
|
|
}
|
|
// This synthesizes and inserts the block "impl" struct, invoke function,
|
|
// and any copy/dispose helper functions.
|
|
InsertBlockLiteralsWithinFunction(FD);
|
|
RewriteLineDirective(D);
|
|
CurFunctionDef = nullptr;
|
|
}
|
|
break;
|
|
}
|
|
case Decl::ObjCMethod: {
|
|
ObjCMethodDecl *MD = cast<ObjCMethodDecl>(D);
|
|
if (CompoundStmt *Body = MD->getCompoundBody()) {
|
|
CurMethodDef = MD;
|
|
CurrentBody = Body;
|
|
Body =
|
|
cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
|
|
MD->setBody(Body);
|
|
CurrentBody = nullptr;
|
|
if (PropParentMap) {
|
|
delete PropParentMap;
|
|
PropParentMap = nullptr;
|
|
}
|
|
InsertBlockLiteralsWithinMethod(MD);
|
|
RewriteLineDirective(D);
|
|
CurMethodDef = nullptr;
|
|
}
|
|
break;
|
|
}
|
|
case Decl::ObjCImplementation: {
|
|
ObjCImplementationDecl *CI = cast<ObjCImplementationDecl>(D);
|
|
ClassImplementation.push_back(CI);
|
|
break;
|
|
}
|
|
case Decl::ObjCCategoryImpl: {
|
|
ObjCCategoryImplDecl *CI = cast<ObjCCategoryImplDecl>(D);
|
|
CategoryImplementation.push_back(CI);
|
|
break;
|
|
}
|
|
case Decl::Var: {
|
|
VarDecl *VD = cast<VarDecl>(D);
|
|
RewriteObjCQualifiedInterfaceTypes(VD);
|
|
if (isTopLevelBlockPointerType(VD->getType()))
|
|
RewriteBlockPointerDecl(VD);
|
|
else if (VD->getType()->isFunctionPointerType()) {
|
|
CheckFunctionPointerDecl(VD->getType(), VD);
|
|
if (VD->getInit()) {
|
|
if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
|
|
RewriteCastExpr(CE);
|
|
}
|
|
}
|
|
} else if (VD->getType()->isRecordType()) {
|
|
RecordDecl *RD = VD->getType()->getAs<RecordType>()->getDecl();
|
|
if (RD->isCompleteDefinition())
|
|
RewriteRecordBody(RD);
|
|
}
|
|
if (VD->getInit()) {
|
|
GlobalVarDecl = VD;
|
|
CurrentBody = VD->getInit();
|
|
RewriteFunctionBodyOrGlobalInitializer(VD->getInit());
|
|
CurrentBody = nullptr;
|
|
if (PropParentMap) {
|
|
delete PropParentMap;
|
|
PropParentMap = nullptr;
|
|
}
|
|
SynthesizeBlockLiterals(VD->getTypeSpecStartLoc(), VD->getName());
|
|
GlobalVarDecl = nullptr;
|
|
|
|
// This is needed for blocks.
|
|
if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
|
|
RewriteCastExpr(CE);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case Decl::TypeAlias:
|
|
case Decl::Typedef: {
|
|
if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) {
|
|
if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
|
|
RewriteBlockPointerDecl(TD);
|
|
else if (TD->getUnderlyingType()->isFunctionPointerType())
|
|
CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
|
|
else
|
|
RewriteObjCQualifiedInterfaceTypes(TD);
|
|
}
|
|
break;
|
|
}
|
|
case Decl::CXXRecord:
|
|
case Decl::Record: {
|
|
RecordDecl *RD = cast<RecordDecl>(D);
|
|
if (RD->isCompleteDefinition())
|
|
RewriteRecordBody(RD);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
// Nothing yet.
|
|
}
|
|
|
|
/// Write_ProtocolExprReferencedMetadata - This routine writer out the
|
|
/// protocol reference symbols in the for of:
|
|
/// struct _protocol_t *PROTOCOL_REF = &PROTOCOL_METADATA.
|
|
static void Write_ProtocolExprReferencedMetadata(ASTContext *Context,
|
|
ObjCProtocolDecl *PDecl,
|
|
std::string &Result) {
|
|
// Also output .objc_protorefs$B section and its meta-data.
|
|
if (Context->getLangOpts().MicrosoftExt)
|
|
Result += "static ";
|
|
Result += "struct _protocol_t *";
|
|
Result += "_OBJC_PROTOCOL_REFERENCE_$_";
|
|
Result += PDecl->getNameAsString();
|
|
Result += " = &";
|
|
Result += "_OBJC_PROTOCOL_"; Result += PDecl->getNameAsString();
|
|
Result += ";\n";
|
|
}
|
|
|
|
void RewriteModernObjC::HandleTranslationUnit(ASTContext &C) {
|
|
if (Diags.hasErrorOccurred())
|
|
return;
|
|
|
|
RewriteInclude();
|
|
|
|
for (unsigned i = 0, e = FunctionDefinitionsSeen.size(); i < e; i++) {
|
|
// translation of function bodies were postponed until all class and
|
|
// their extensions and implementations are seen. This is because, we
|
|
// cannot build grouping structs for bitfields until they are all seen.
|
|
FunctionDecl *FDecl = FunctionDefinitionsSeen[i];
|
|
HandleTopLevelSingleDecl(FDecl);
|
|
}
|
|
|
|
// Here's a great place to add any extra declarations that may be needed.
|
|
// Write out meta data for each @protocol(<expr>).
|
|
for (ObjCProtocolDecl *ProtDecl : ProtocolExprDecls) {
|
|
RewriteObjCProtocolMetaData(ProtDecl, Preamble);
|
|
Write_ProtocolExprReferencedMetadata(Context, ProtDecl, Preamble);
|
|
}
|
|
|
|
InsertText(SM->getLocForStartOfFile(MainFileID), Preamble, false);
|
|
|
|
if (ClassImplementation.size() || CategoryImplementation.size())
|
|
RewriteImplementations();
|
|
|
|
for (unsigned i = 0, e = ObjCInterfacesSeen.size(); i < e; i++) {
|
|
ObjCInterfaceDecl *CDecl = ObjCInterfacesSeen[i];
|
|
// Write struct declaration for the class matching its ivar declarations.
|
|
// Note that for modern abi, this is postponed until the end of TU
|
|
// because class extensions and the implementation might declare their own
|
|
// private ivars.
|
|
RewriteInterfaceDecl(CDecl);
|
|
}
|
|
|
|
// Get the buffer corresponding to MainFileID. If we haven't changed it, then
|
|
// we are done.
|
|
if (const RewriteBuffer *RewriteBuf =
|
|
Rewrite.getRewriteBufferFor(MainFileID)) {
|
|
//printf("Changed:\n");
|
|
*OutFile << std::string(RewriteBuf->begin(), RewriteBuf->end());
|
|
} else {
|
|
llvm::errs() << "No changes\n";
|
|
}
|
|
|
|
if (ClassImplementation.size() || CategoryImplementation.size() ||
|
|
ProtocolExprDecls.size()) {
|
|
// Rewrite Objective-c meta data*
|
|
std::string ResultStr;
|
|
RewriteMetaDataIntoBuffer(ResultStr);
|
|
// Emit metadata.
|
|
*OutFile << ResultStr;
|
|
}
|
|
// Emit ImageInfo;
|
|
{
|
|
std::string ResultStr;
|
|
WriteImageInfo(ResultStr);
|
|
*OutFile << ResultStr;
|
|
}
|
|
OutFile->flush();
|
|
}
|
|
|
|
void RewriteModernObjC::Initialize(ASTContext &context) {
|
|
InitializeCommon(context);
|
|
|
|
Preamble += "#ifndef __OBJC2__\n";
|
|
Preamble += "#define __OBJC2__\n";
|
|
Preamble += "#endif\n";
|
|
|
|
// declaring objc_selector outside the parameter list removes a silly
|
|
// scope related warning...
|
|
if (IsHeader)
|
|
Preamble = "#pragma once\n";
|
|
Preamble += "struct objc_selector; struct objc_class;\n";
|
|
Preamble += "struct __rw_objc_super { \n\tstruct objc_object *object; ";
|
|
Preamble += "\n\tstruct objc_object *superClass; ";
|
|
// Add a constructor for creating temporary objects.
|
|
Preamble += "\n\t__rw_objc_super(struct objc_object *o, struct objc_object *s) ";
|
|
Preamble += ": object(o), superClass(s) {} ";
|
|
Preamble += "\n};\n";
|
|
|
|
if (LangOpts.MicrosoftExt) {
|
|
// Define all sections using syntax that makes sense.
|
|
// These are currently generated.
|
|
Preamble += "\n#pragma section(\".objc_classlist$B\", long, read, write)\n";
|
|
Preamble += "#pragma section(\".objc_catlist$B\", long, read, write)\n";
|
|
Preamble += "#pragma section(\".objc_imageinfo$B\", long, read, write)\n";
|
|
Preamble += "#pragma section(\".objc_nlclslist$B\", long, read, write)\n";
|
|
Preamble += "#pragma section(\".objc_nlcatlist$B\", long, read, write)\n";
|
|
// These are generated but not necessary for functionality.
|
|
Preamble += "#pragma section(\".cat_cls_meth$B\", long, read, write)\n";
|
|
Preamble += "#pragma section(\".inst_meth$B\", long, read, write)\n";
|
|
Preamble += "#pragma section(\".cls_meth$B\", long, read, write)\n";
|
|
Preamble += "#pragma section(\".objc_ivar$B\", long, read, write)\n";
|
|
|
|
// These need be generated for performance. Currently they are not,
|
|
// using API calls instead.
|
|
Preamble += "#pragma section(\".objc_selrefs$B\", long, read, write)\n";
|
|
Preamble += "#pragma section(\".objc_classrefs$B\", long, read, write)\n";
|
|
Preamble += "#pragma section(\".objc_superrefs$B\", long, read, write)\n";
|
|
|
|
}
|
|
Preamble += "#ifndef _REWRITER_typedef_Protocol\n";
|
|
Preamble += "typedef struct objc_object Protocol;\n";
|
|
Preamble += "#define _REWRITER_typedef_Protocol\n";
|
|
Preamble += "#endif\n";
|
|
if (LangOpts.MicrosoftExt) {
|
|
Preamble += "#define __OBJC_RW_DLLIMPORT extern \"C\" __declspec(dllimport)\n";
|
|
Preamble += "#define __OBJC_RW_STATICIMPORT extern \"C\"\n";
|
|
}
|
|
else
|
|
Preamble += "#define __OBJC_RW_DLLIMPORT extern\n";
|
|
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSend(void);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSendSuper(void);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSend_stret(void);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSendSuper_stret(void);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSend_fpret(void);\n";
|
|
|
|
Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *objc_getClass";
|
|
Preamble += "(const char *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *class_getSuperclass";
|
|
Preamble += "(struct objc_class *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *objc_getMetaClass";
|
|
Preamble += "(const char *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_throw( struct objc_object *);\n";
|
|
// @synchronized hooks.
|
|
Preamble += "__OBJC_RW_DLLIMPORT int objc_sync_enter( struct objc_object *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT int objc_sync_exit( struct objc_object *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT Protocol *objc_getProtocol(const char *);\n";
|
|
Preamble += "#ifdef _WIN64\n";
|
|
Preamble += "typedef unsigned long long _WIN_NSUInteger;\n";
|
|
Preamble += "#else\n";
|
|
Preamble += "typedef unsigned int _WIN_NSUInteger;\n";
|
|
Preamble += "#endif\n";
|
|
Preamble += "#ifndef __FASTENUMERATIONSTATE\n";
|
|
Preamble += "struct __objcFastEnumerationState {\n\t";
|
|
Preamble += "unsigned long state;\n\t";
|
|
Preamble += "void **itemsPtr;\n\t";
|
|
Preamble += "unsigned long *mutationsPtr;\n\t";
|
|
Preamble += "unsigned long extra[5];\n};\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_enumerationMutation(struct objc_object *);\n";
|
|
Preamble += "#define __FASTENUMERATIONSTATE\n";
|
|
Preamble += "#endif\n";
|
|
Preamble += "#ifndef __NSCONSTANTSTRINGIMPL\n";
|
|
Preamble += "struct __NSConstantStringImpl {\n";
|
|
Preamble += " int *isa;\n";
|
|
Preamble += " int flags;\n";
|
|
Preamble += " char *str;\n";
|
|
Preamble += "#if _WIN64\n";
|
|
Preamble += " long long length;\n";
|
|
Preamble += "#else\n";
|
|
Preamble += " long length;\n";
|
|
Preamble += "#endif\n";
|
|
Preamble += "};\n";
|
|
Preamble += "#ifdef CF_EXPORT_CONSTANT_STRING\n";
|
|
Preamble += "extern \"C\" __declspec(dllexport) int __CFConstantStringClassReference[];\n";
|
|
Preamble += "#else\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT int __CFConstantStringClassReference[];\n";
|
|
Preamble += "#endif\n";
|
|
Preamble += "#define __NSCONSTANTSTRINGIMPL\n";
|
|
Preamble += "#endif\n";
|
|
// Blocks preamble.
|
|
Preamble += "#ifndef BLOCK_IMPL\n";
|
|
Preamble += "#define BLOCK_IMPL\n";
|
|
Preamble += "struct __block_impl {\n";
|
|
Preamble += " void *isa;\n";
|
|
Preamble += " int Flags;\n";
|
|
Preamble += " int Reserved;\n";
|
|
Preamble += " void *FuncPtr;\n";
|
|
Preamble += "};\n";
|
|
Preamble += "// Runtime copy/destroy helper functions (from Block_private.h)\n";
|
|
Preamble += "#ifdef __OBJC_EXPORT_BLOCKS\n";
|
|
Preamble += "extern \"C\" __declspec(dllexport) "
|
|
"void _Block_object_assign(void *, const void *, const int);\n";
|
|
Preamble += "extern \"C\" __declspec(dllexport) void _Block_object_dispose(const void *, const int);\n";
|
|
Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteGlobalBlock[32];\n";
|
|
Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteStackBlock[32];\n";
|
|
Preamble += "#else\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_assign(void *, const void *, const int);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_dispose(const void *, const int);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteGlobalBlock[32];\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteStackBlock[32];\n";
|
|
Preamble += "#endif\n";
|
|
Preamble += "#endif\n";
|
|
if (LangOpts.MicrosoftExt) {
|
|
Preamble += "#undef __OBJC_RW_DLLIMPORT\n";
|
|
Preamble += "#undef __OBJC_RW_STATICIMPORT\n";
|
|
Preamble += "#ifndef KEEP_ATTRIBUTES\n"; // We use this for clang tests.
|
|
Preamble += "#define __attribute__(X)\n";
|
|
Preamble += "#endif\n";
|
|
Preamble += "#ifndef __weak\n";
|
|
Preamble += "#define __weak\n";
|
|
Preamble += "#endif\n";
|
|
Preamble += "#ifndef __block\n";
|
|
Preamble += "#define __block\n";
|
|
Preamble += "#endif\n";
|
|
}
|
|
else {
|
|
Preamble += "#define __block\n";
|
|
Preamble += "#define __weak\n";
|
|
}
|
|
|
|
// Declarations required for modern objective-c array and dictionary literals.
|
|
Preamble += "\n#include <stdarg.h>\n";
|
|
Preamble += "struct __NSContainer_literal {\n";
|
|
Preamble += " void * *arr;\n";
|
|
Preamble += " __NSContainer_literal (unsigned int count, ...) {\n";
|
|
Preamble += "\tva_list marker;\n";
|
|
Preamble += "\tva_start(marker, count);\n";
|
|
Preamble += "\tarr = new void *[count];\n";
|
|
Preamble += "\tfor (unsigned i = 0; i < count; i++)\n";
|
|
Preamble += "\t arr[i] = va_arg(marker, void *);\n";
|
|
Preamble += "\tva_end( marker );\n";
|
|
Preamble += " };\n";
|
|
Preamble += " ~__NSContainer_literal() {\n";
|
|
Preamble += "\tdelete[] arr;\n";
|
|
Preamble += " }\n";
|
|
Preamble += "};\n";
|
|
|
|
// Declaration required for implementation of @autoreleasepool statement.
|
|
Preamble += "extern \"C\" __declspec(dllimport) void * objc_autoreleasePoolPush(void);\n";
|
|
Preamble += "extern \"C\" __declspec(dllimport) void objc_autoreleasePoolPop(void *);\n\n";
|
|
Preamble += "struct __AtAutoreleasePool {\n";
|
|
Preamble += " __AtAutoreleasePool() {atautoreleasepoolobj = objc_autoreleasePoolPush();}\n";
|
|
Preamble += " ~__AtAutoreleasePool() {objc_autoreleasePoolPop(atautoreleasepoolobj);}\n";
|
|
Preamble += " void * atautoreleasepoolobj;\n";
|
|
Preamble += "};\n";
|
|
|
|
// NOTE! Windows uses LLP64 for 64bit mode. So, cast pointer to long long
|
|
// as this avoids warning in any 64bit/32bit compilation model.
|
|
Preamble += "\n#define __OFFSETOFIVAR__(TYPE, MEMBER) ((long long) &((TYPE *)0)->MEMBER)\n";
|
|
}
|
|
|
|
/// RewriteIvarOffsetComputation - This routine synthesizes computation of
|
|
/// ivar offset.
|
|
void RewriteModernObjC::RewriteIvarOffsetComputation(ObjCIvarDecl *ivar,
|
|
std::string &Result) {
|
|
Result += "__OFFSETOFIVAR__(struct ";
|
|
Result += ivar->getContainingInterface()->getNameAsString();
|
|
if (LangOpts.MicrosoftExt)
|
|
Result += "_IMPL";
|
|
Result += ", ";
|
|
if (ivar->isBitField())
|
|
ObjCIvarBitfieldGroupDecl(ivar, Result);
|
|
else
|
|
Result += ivar->getNameAsString();
|
|
Result += ")";
|
|
}
|
|
|
|
/// WriteModernMetadataDeclarations - Writes out metadata declarations for modern ABI.
|
|
/// struct _prop_t {
|
|
/// const char *name;
|
|
/// char *attributes;
|
|
/// }
|
|
|
|
/// struct _prop_list_t {
|
|
/// uint32_t entsize; // sizeof(struct _prop_t)
|
|
/// uint32_t count_of_properties;
|
|
/// struct _prop_t prop_list[count_of_properties];
|
|
/// }
|
|
|
|
/// struct _protocol_t;
|
|
|
|
/// struct _protocol_list_t {
|
|
/// long protocol_count; // Note, this is 32/64 bit
|
|
/// struct _protocol_t * protocol_list[protocol_count];
|
|
/// }
|
|
|
|
/// struct _objc_method {
|
|
/// SEL _cmd;
|
|
/// const char *method_type;
|
|
/// char *_imp;
|
|
/// }
|
|
|
|
/// struct _method_list_t {
|
|
/// uint32_t entsize; // sizeof(struct _objc_method)
|
|
/// uint32_t method_count;
|
|
/// struct _objc_method method_list[method_count];
|
|
/// }
|
|
|
|
/// struct _protocol_t {
|
|
/// id isa; // NULL
|
|
/// const char *protocol_name;
|
|
/// const struct _protocol_list_t * protocol_list; // super protocols
|
|
/// const struct method_list_t *instance_methods;
|
|
/// const struct method_list_t *class_methods;
|
|
/// const struct method_list_t *optionalInstanceMethods;
|
|
/// const struct method_list_t *optionalClassMethods;
|
|
/// const struct _prop_list_t * properties;
|
|
/// const uint32_t size; // sizeof(struct _protocol_t)
|
|
/// const uint32_t flags; // = 0
|
|
/// const char ** extendedMethodTypes;
|
|
/// }
|
|
|
|
/// struct _ivar_t {
|
|
/// unsigned long int *offset; // pointer to ivar offset location
|
|
/// const char *name;
|
|
/// const char *type;
|
|
/// uint32_t alignment;
|
|
/// uint32_t size;
|
|
/// }
|
|
|
|
/// struct _ivar_list_t {
|
|
/// uint32 entsize; // sizeof(struct _ivar_t)
|
|
/// uint32 count;
|
|
/// struct _ivar_t list[count];
|
|
/// }
|
|
|
|
/// struct _class_ro_t {
|
|
/// uint32_t flags;
|
|
/// uint32_t instanceStart;
|
|
/// uint32_t instanceSize;
|
|
/// uint32_t reserved; // only when building for 64bit targets
|
|
/// const uint8_t *ivarLayout;
|
|
/// const char *name;
|
|
/// const struct _method_list_t *baseMethods;
|
|
/// const struct _protocol_list_t *baseProtocols;
|
|
/// const struct _ivar_list_t *ivars;
|
|
/// const uint8_t *weakIvarLayout;
|
|
/// const struct _prop_list_t *properties;
|
|
/// }
|
|
|
|
/// struct _class_t {
|
|
/// struct _class_t *isa;
|
|
/// struct _class_t *superclass;
|
|
/// void *cache;
|
|
/// IMP *vtable;
|
|
/// struct _class_ro_t *ro;
|
|
/// }
|
|
|
|
/// struct _category_t {
|
|
/// const char *name;
|
|
/// struct _class_t *cls;
|
|
/// const struct _method_list_t *instance_methods;
|
|
/// const struct _method_list_t *class_methods;
|
|
/// const struct _protocol_list_t *protocols;
|
|
/// const struct _prop_list_t *properties;
|
|
/// }
|
|
|
|
/// MessageRefTy - LLVM for:
|
|
/// struct _message_ref_t {
|
|
/// IMP messenger;
|
|
/// SEL name;
|
|
/// };
|
|
|
|
/// SuperMessageRefTy - LLVM for:
|
|
/// struct _super_message_ref_t {
|
|
/// SUPER_IMP messenger;
|
|
/// SEL name;
|
|
/// };
|
|
|
|
static void WriteModernMetadataDeclarations(ASTContext *Context, std::string &Result) {
|
|
static bool meta_data_declared = false;
|
|
if (meta_data_declared)
|
|
return;
|
|
|
|
Result += "\nstruct _prop_t {\n";
|
|
Result += "\tconst char *name;\n";
|
|
Result += "\tconst char *attributes;\n";
|
|
Result += "};\n";
|
|
|
|
Result += "\nstruct _protocol_t;\n";
|
|
|
|
Result += "\nstruct _objc_method {\n";
|
|
Result += "\tstruct objc_selector * _cmd;\n";
|
|
Result += "\tconst char *method_type;\n";
|
|
Result += "\tvoid *_imp;\n";
|
|
Result += "};\n";
|
|
|
|
Result += "\nstruct _protocol_t {\n";
|
|
Result += "\tvoid * isa; // NULL\n";
|
|
Result += "\tconst char *protocol_name;\n";
|
|
Result += "\tconst struct _protocol_list_t * protocol_list; // super protocols\n";
|
|
Result += "\tconst struct method_list_t *instance_methods;\n";
|
|
Result += "\tconst struct method_list_t *class_methods;\n";
|
|
Result += "\tconst struct method_list_t *optionalInstanceMethods;\n";
|
|
Result += "\tconst struct method_list_t *optionalClassMethods;\n";
|
|
Result += "\tconst struct _prop_list_t * properties;\n";
|
|
Result += "\tconst unsigned int size; // sizeof(struct _protocol_t)\n";
|
|
Result += "\tconst unsigned int flags; // = 0\n";
|
|
Result += "\tconst char ** extendedMethodTypes;\n";
|
|
Result += "};\n";
|
|
|
|
Result += "\nstruct _ivar_t {\n";
|
|
Result += "\tunsigned long int *offset; // pointer to ivar offset location\n";
|
|
Result += "\tconst char *name;\n";
|
|
Result += "\tconst char *type;\n";
|
|
Result += "\tunsigned int alignment;\n";
|
|
Result += "\tunsigned int size;\n";
|
|
Result += "};\n";
|
|
|
|
Result += "\nstruct _class_ro_t {\n";
|
|
Result += "\tunsigned int flags;\n";
|
|
Result += "\tunsigned int instanceStart;\n";
|
|
Result += "\tunsigned int instanceSize;\n";
|
|
const llvm::Triple &Triple(Context->getTargetInfo().getTriple());
|
|
if (Triple.getArch() == llvm::Triple::x86_64)
|
|
Result += "\tunsigned int reserved;\n";
|
|
Result += "\tconst unsigned char *ivarLayout;\n";
|
|
Result += "\tconst char *name;\n";
|
|
Result += "\tconst struct _method_list_t *baseMethods;\n";
|
|
Result += "\tconst struct _objc_protocol_list *baseProtocols;\n";
|
|
Result += "\tconst struct _ivar_list_t *ivars;\n";
|
|
Result += "\tconst unsigned char *weakIvarLayout;\n";
|
|
Result += "\tconst struct _prop_list_t *properties;\n";
|
|
Result += "};\n";
|
|
|
|
Result += "\nstruct _class_t {\n";
|
|
Result += "\tstruct _class_t *isa;\n";
|
|
Result += "\tstruct _class_t *superclass;\n";
|
|
Result += "\tvoid *cache;\n";
|
|
Result += "\tvoid *vtable;\n";
|
|
Result += "\tstruct _class_ro_t *ro;\n";
|
|
Result += "};\n";
|
|
|
|
Result += "\nstruct _category_t {\n";
|
|
Result += "\tconst char *name;\n";
|
|
Result += "\tstruct _class_t *cls;\n";
|
|
Result += "\tconst struct _method_list_t *instance_methods;\n";
|
|
Result += "\tconst struct _method_list_t *class_methods;\n";
|
|
Result += "\tconst struct _protocol_list_t *protocols;\n";
|
|
Result += "\tconst struct _prop_list_t *properties;\n";
|
|
Result += "};\n";
|
|
|
|
Result += "extern \"C\" __declspec(dllimport) struct objc_cache _objc_empty_cache;\n";
|
|
Result += "#pragma warning(disable:4273)\n";
|
|
meta_data_declared = true;
|
|
}
|
|
|
|
static void Write_protocol_list_t_TypeDecl(std::string &Result,
|
|
long super_protocol_count) {
|
|
Result += "struct /*_protocol_list_t*/"; Result += " {\n";
|
|
Result += "\tlong protocol_count; // Note, this is 32/64 bit\n";
|
|
Result += "\tstruct _protocol_t *super_protocols[";
|
|
Result += utostr(super_protocol_count); Result += "];\n";
|
|
Result += "}";
|
|
}
|
|
|
|
static void Write_method_list_t_TypeDecl(std::string &Result,
|
|
unsigned int method_count) {
|
|
Result += "struct /*_method_list_t*/"; Result += " {\n";
|
|
Result += "\tunsigned int entsize; // sizeof(struct _objc_method)\n";
|
|
Result += "\tunsigned int method_count;\n";
|
|
Result += "\tstruct _objc_method method_list[";
|
|
Result += utostr(method_count); Result += "];\n";
|
|
Result += "}";
|
|
}
|
|
|
|
static void Write__prop_list_t_TypeDecl(std::string &Result,
|
|
unsigned int property_count) {
|
|
Result += "struct /*_prop_list_t*/"; Result += " {\n";
|
|
Result += "\tunsigned int entsize; // sizeof(struct _prop_t)\n";
|
|
Result += "\tunsigned int count_of_properties;\n";
|
|
Result += "\tstruct _prop_t prop_list[";
|
|
Result += utostr(property_count); Result += "];\n";
|
|
Result += "}";
|
|
}
|
|
|
|
static void Write__ivar_list_t_TypeDecl(std::string &Result,
|
|
unsigned int ivar_count) {
|
|
Result += "struct /*_ivar_list_t*/"; Result += " {\n";
|
|
Result += "\tunsigned int entsize; // sizeof(struct _prop_t)\n";
|
|
Result += "\tunsigned int count;\n";
|
|
Result += "\tstruct _ivar_t ivar_list[";
|
|
Result += utostr(ivar_count); Result += "];\n";
|
|
Result += "}";
|
|
}
|
|
|
|
static void Write_protocol_list_initializer(ASTContext *Context, std::string &Result,
|
|
ArrayRef<ObjCProtocolDecl *> SuperProtocols,
|
|
StringRef VarName,
|
|
StringRef ProtocolName) {
|
|
if (SuperProtocols.size() > 0) {
|
|
Result += "\nstatic ";
|
|
Write_protocol_list_t_TypeDecl(Result, SuperProtocols.size());
|
|
Result += " "; Result += VarName;
|
|
Result += ProtocolName;
|
|
Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
|
|
Result += "\t"; Result += utostr(SuperProtocols.size()); Result += ",\n";
|
|
for (unsigned i = 0, e = SuperProtocols.size(); i < e; i++) {
|
|
ObjCProtocolDecl *SuperPD = SuperProtocols[i];
|
|
Result += "\t&"; Result += "_OBJC_PROTOCOL_";
|
|
Result += SuperPD->getNameAsString();
|
|
if (i == e-1)
|
|
Result += "\n};\n";
|
|
else
|
|
Result += ",\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
static void Write_method_list_t_initializer(RewriteModernObjC &RewriteObj,
|
|
ASTContext *Context, std::string &Result,
|
|
ArrayRef<ObjCMethodDecl *> Methods,
|
|
StringRef VarName,
|
|
StringRef TopLevelDeclName,
|
|
bool MethodImpl) {
|
|
if (Methods.size() > 0) {
|
|
Result += "\nstatic ";
|
|
Write_method_list_t_TypeDecl(Result, Methods.size());
|
|
Result += " "; Result += VarName;
|
|
Result += TopLevelDeclName;
|
|
Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
|
|
Result += "\t"; Result += "sizeof(_objc_method)"; Result += ",\n";
|
|
Result += "\t"; Result += utostr(Methods.size()); Result += ",\n";
|
|
for (unsigned i = 0, e = Methods.size(); i < e; i++) {
|
|
ObjCMethodDecl *MD = Methods[i];
|
|
if (i == 0)
|
|
Result += "\t{{(struct objc_selector *)\"";
|
|
else
|
|
Result += "\t{(struct objc_selector *)\"";
|
|
Result += (MD)->getSelector().getAsString(); Result += "\"";
|
|
Result += ", ";
|
|
std::string MethodTypeString = Context->getObjCEncodingForMethodDecl(MD);
|
|
Result += "\""; Result += MethodTypeString; Result += "\"";
|
|
Result += ", ";
|
|
if (!MethodImpl)
|
|
Result += "0";
|
|
else {
|
|
Result += "(void *)";
|
|
Result += RewriteObj.MethodInternalNames[MD];
|
|
}
|
|
if (i == e-1)
|
|
Result += "}}\n";
|
|
else
|
|
Result += "},\n";
|
|
}
|
|
Result += "};\n";
|
|
}
|
|
}
|
|
|
|
static void Write_prop_list_t_initializer(RewriteModernObjC &RewriteObj,
|
|
ASTContext *Context, std::string &Result,
|
|
ArrayRef<ObjCPropertyDecl *> Properties,
|
|
const Decl *Container,
|
|
StringRef VarName,
|
|
StringRef ProtocolName) {
|
|
if (Properties.size() > 0) {
|
|
Result += "\nstatic ";
|
|
Write__prop_list_t_TypeDecl(Result, Properties.size());
|
|
Result += " "; Result += VarName;
|
|
Result += ProtocolName;
|
|
Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
|
|
Result += "\t"; Result += "sizeof(_prop_t)"; Result += ",\n";
|
|
Result += "\t"; Result += utostr(Properties.size()); Result += ",\n";
|
|
for (unsigned i = 0, e = Properties.size(); i < e; i++) {
|
|
ObjCPropertyDecl *PropDecl = Properties[i];
|
|
if (i == 0)
|
|
Result += "\t{{\"";
|
|
else
|
|
Result += "\t{\"";
|
|
Result += PropDecl->getName(); Result += "\",";
|
|
std::string PropertyTypeString =
|
|
Context->getObjCEncodingForPropertyDecl(PropDecl, Container);
|
|
std::string QuotePropertyTypeString;
|
|
RewriteObj.QuoteDoublequotes(PropertyTypeString, QuotePropertyTypeString);
|
|
Result += "\""; Result += QuotePropertyTypeString; Result += "\"";
|
|
if (i == e-1)
|
|
Result += "}}\n";
|
|
else
|
|
Result += "},\n";
|
|
}
|
|
Result += "};\n";
|
|
}
|
|
}
|
|
|
|
// Metadata flags
|
|
enum MetaDataDlags {
|
|
CLS = 0x0,
|
|
CLS_META = 0x1,
|
|
CLS_ROOT = 0x2,
|
|
OBJC2_CLS_HIDDEN = 0x10,
|
|
CLS_EXCEPTION = 0x20,
|
|
|
|
/// (Obsolete) ARC-specific: this class has a .release_ivars method
|
|
CLS_HAS_IVAR_RELEASER = 0x40,
|
|
/// class was compiled with -fobjc-arr
|
|
CLS_COMPILED_BY_ARC = 0x80 // (1<<7)
|
|
};
|
|
|
|
static void Write__class_ro_t_initializer(ASTContext *Context, std::string &Result,
|
|
unsigned int flags,
|
|
const std::string &InstanceStart,
|
|
const std::string &InstanceSize,
|
|
ArrayRef<ObjCMethodDecl *>baseMethods,
|
|
ArrayRef<ObjCProtocolDecl *>baseProtocols,
|
|
ArrayRef<ObjCIvarDecl *>ivars,
|
|
ArrayRef<ObjCPropertyDecl *>Properties,
|
|
StringRef VarName,
|
|
StringRef ClassName) {
|
|
Result += "\nstatic struct _class_ro_t ";
|
|
Result += VarName; Result += ClassName;
|
|
Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
|
|
Result += "\t";
|
|
Result += llvm::utostr(flags); Result += ", ";
|
|
Result += InstanceStart; Result += ", ";
|
|
Result += InstanceSize; Result += ", \n";
|
|
Result += "\t";
|
|
const llvm::Triple &Triple(Context->getTargetInfo().getTriple());
|
|
if (Triple.getArch() == llvm::Triple::x86_64)
|
|
// uint32_t const reserved; // only when building for 64bit targets
|
|
Result += "(unsigned int)0, \n\t";
|
|
// const uint8_t * const ivarLayout;
|
|
Result += "0, \n\t";
|
|
Result += "\""; Result += ClassName; Result += "\",\n\t";
|
|
bool metaclass = ((flags & CLS_META) != 0);
|
|
if (baseMethods.size() > 0) {
|
|
Result += "(const struct _method_list_t *)&";
|
|
if (metaclass)
|
|
Result += "_OBJC_$_CLASS_METHODS_";
|
|
else
|
|
Result += "_OBJC_$_INSTANCE_METHODS_";
|
|
Result += ClassName;
|
|
Result += ",\n\t";
|
|
}
|
|
else
|
|
Result += "0, \n\t";
|
|
|
|
if (!metaclass && baseProtocols.size() > 0) {
|
|
Result += "(const struct _objc_protocol_list *)&";
|
|
Result += "_OBJC_CLASS_PROTOCOLS_$_"; Result += ClassName;
|
|
Result += ",\n\t";
|
|
}
|
|
else
|
|
Result += "0, \n\t";
|
|
|
|
if (!metaclass && ivars.size() > 0) {
|
|
Result += "(const struct _ivar_list_t *)&";
|
|
Result += "_OBJC_$_INSTANCE_VARIABLES_"; Result += ClassName;
|
|
Result += ",\n\t";
|
|
}
|
|
else
|
|
Result += "0, \n\t";
|
|
|
|
// weakIvarLayout
|
|
Result += "0, \n\t";
|
|
if (!metaclass && Properties.size() > 0) {
|
|
Result += "(const struct _prop_list_t *)&";
|
|
Result += "_OBJC_$_PROP_LIST_"; Result += ClassName;
|
|
Result += ",\n";
|
|
}
|
|
else
|
|
Result += "0, \n";
|
|
|
|
Result += "};\n";
|
|
}
|
|
|
|
static void Write_class_t(ASTContext *Context, std::string &Result,
|
|
StringRef VarName,
|
|
const ObjCInterfaceDecl *CDecl, bool metaclass) {
|
|
bool rootClass = (!CDecl->getSuperClass());
|
|
const ObjCInterfaceDecl *RootClass = CDecl;
|
|
|
|
if (!rootClass) {
|
|
// Find the Root class
|
|
RootClass = CDecl->getSuperClass();
|
|
while (RootClass->getSuperClass()) {
|
|
RootClass = RootClass->getSuperClass();
|
|
}
|
|
}
|
|
|
|
if (metaclass && rootClass) {
|
|
// Need to handle a case of use of forward declaration.
|
|
Result += "\n";
|
|
Result += "extern \"C\" ";
|
|
if (CDecl->getImplementation())
|
|
Result += "__declspec(dllexport) ";
|
|
else
|
|
Result += "__declspec(dllimport) ";
|
|
|
|
Result += "struct _class_t OBJC_CLASS_$_";
|
|
Result += CDecl->getNameAsString();
|
|
Result += ";\n";
|
|
}
|
|
// Also, for possibility of 'super' metadata class not having been defined yet.
|
|
if (!rootClass) {
|
|
ObjCInterfaceDecl *SuperClass = CDecl->getSuperClass();
|
|
Result += "\n";
|
|
Result += "extern \"C\" ";
|
|
if (SuperClass->getImplementation())
|
|
Result += "__declspec(dllexport) ";
|
|
else
|
|
Result += "__declspec(dllimport) ";
|
|
|
|
Result += "struct _class_t ";
|
|
Result += VarName;
|
|
Result += SuperClass->getNameAsString();
|
|
Result += ";\n";
|
|
|
|
if (metaclass && RootClass != SuperClass) {
|
|
Result += "extern \"C\" ";
|
|
if (RootClass->getImplementation())
|
|
Result += "__declspec(dllexport) ";
|
|
else
|
|
Result += "__declspec(dllimport) ";
|
|
|
|
Result += "struct _class_t ";
|
|
Result += VarName;
|
|
Result += RootClass->getNameAsString();
|
|
Result += ";\n";
|
|
}
|
|
}
|
|
|
|
Result += "\nextern \"C\" __declspec(dllexport) struct _class_t ";
|
|
Result += VarName; Result += CDecl->getNameAsString();
|
|
Result += " __attribute__ ((used, section (\"__DATA,__objc_data\"))) = {\n";
|
|
Result += "\t";
|
|
if (metaclass) {
|
|
if (!rootClass) {
|
|
Result += "0, // &"; Result += VarName;
|
|
Result += RootClass->getNameAsString();
|
|
Result += ",\n\t";
|
|
Result += "0, // &"; Result += VarName;
|
|
Result += CDecl->getSuperClass()->getNameAsString();
|
|
Result += ",\n\t";
|
|
}
|
|
else {
|
|
Result += "0, // &"; Result += VarName;
|
|
Result += CDecl->getNameAsString();
|
|
Result += ",\n\t";
|
|
Result += "0, // &OBJC_CLASS_$_"; Result += CDecl->getNameAsString();
|
|
Result += ",\n\t";
|
|
}
|
|
}
|
|
else {
|
|
Result += "0, // &OBJC_METACLASS_$_";
|
|
Result += CDecl->getNameAsString();
|
|
Result += ",\n\t";
|
|
if (!rootClass) {
|
|
Result += "0, // &"; Result += VarName;
|
|
Result += CDecl->getSuperClass()->getNameAsString();
|
|
Result += ",\n\t";
|
|
}
|
|
else
|
|
Result += "0,\n\t";
|
|
}
|
|
Result += "0, // (void *)&_objc_empty_cache,\n\t";
|
|
Result += "0, // unused, was (void *)&_objc_empty_vtable,\n\t";
|
|
if (metaclass)
|
|
Result += "&_OBJC_METACLASS_RO_$_";
|
|
else
|
|
Result += "&_OBJC_CLASS_RO_$_";
|
|
Result += CDecl->getNameAsString();
|
|
Result += ",\n};\n";
|
|
|
|
// Add static function to initialize some of the meta-data fields.
|
|
// avoid doing it twice.
|
|
if (metaclass)
|
|
return;
|
|
|
|
const ObjCInterfaceDecl *SuperClass =
|
|
rootClass ? CDecl : CDecl->getSuperClass();
|
|
|
|
Result += "static void OBJC_CLASS_SETUP_$_";
|
|
Result += CDecl->getNameAsString();
|
|
Result += "(void ) {\n";
|
|
Result += "\tOBJC_METACLASS_$_"; Result += CDecl->getNameAsString();
|
|
Result += ".isa = "; Result += "&OBJC_METACLASS_$_";
|
|
Result += RootClass->getNameAsString(); Result += ";\n";
|
|
|
|
Result += "\tOBJC_METACLASS_$_"; Result += CDecl->getNameAsString();
|
|
Result += ".superclass = ";
|
|
if (rootClass)
|
|
Result += "&OBJC_CLASS_$_";
|
|
else
|
|
Result += "&OBJC_METACLASS_$_";
|
|
|
|
Result += SuperClass->getNameAsString(); Result += ";\n";
|
|
|
|
Result += "\tOBJC_METACLASS_$_"; Result += CDecl->getNameAsString();
|
|
Result += ".cache = "; Result += "&_objc_empty_cache"; Result += ";\n";
|
|
|
|
Result += "\tOBJC_CLASS_$_"; Result += CDecl->getNameAsString();
|
|
Result += ".isa = "; Result += "&OBJC_METACLASS_$_";
|
|
Result += CDecl->getNameAsString(); Result += ";\n";
|
|
|
|
if (!rootClass) {
|
|
Result += "\tOBJC_CLASS_$_"; Result += CDecl->getNameAsString();
|
|
Result += ".superclass = "; Result += "&OBJC_CLASS_$_";
|
|
Result += SuperClass->getNameAsString(); Result += ";\n";
|
|
}
|
|
|
|
Result += "\tOBJC_CLASS_$_"; Result += CDecl->getNameAsString();
|
|
Result += ".cache = "; Result += "&_objc_empty_cache"; Result += ";\n";
|
|
Result += "}\n";
|
|
}
|
|
|
|
static void Write_category_t(RewriteModernObjC &RewriteObj, ASTContext *Context,
|
|
std::string &Result,
|
|
ObjCCategoryDecl *CatDecl,
|
|
ObjCInterfaceDecl *ClassDecl,
|
|
ArrayRef<ObjCMethodDecl *> InstanceMethods,
|
|
ArrayRef<ObjCMethodDecl *> ClassMethods,
|
|
ArrayRef<ObjCProtocolDecl *> RefedProtocols,
|
|
ArrayRef<ObjCPropertyDecl *> ClassProperties) {
|
|
StringRef CatName = CatDecl->getName();
|
|
StringRef ClassName = ClassDecl->getName();
|
|
// must declare an extern class object in case this class is not implemented
|
|
// in this TU.
|
|
Result += "\n";
|
|
Result += "extern \"C\" ";
|
|
if (ClassDecl->getImplementation())
|
|
Result += "__declspec(dllexport) ";
|
|
else
|
|
Result += "__declspec(dllimport) ";
|
|
|
|
Result += "struct _class_t ";
|
|
Result += "OBJC_CLASS_$_"; Result += ClassName;
|
|
Result += ";\n";
|
|
|
|
Result += "\nstatic struct _category_t ";
|
|
Result += "_OBJC_$_CATEGORY_";
|
|
Result += ClassName; Result += "_$_"; Result += CatName;
|
|
Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = \n";
|
|
Result += "{\n";
|
|
Result += "\t\""; Result += ClassName; Result += "\",\n";
|
|
Result += "\t0, // &"; Result += "OBJC_CLASS_$_"; Result += ClassName;
|
|
Result += ",\n";
|
|
if (InstanceMethods.size() > 0) {
|
|
Result += "\t(const struct _method_list_t *)&";
|
|
Result += "_OBJC_$_CATEGORY_INSTANCE_METHODS_";
|
|
Result += ClassName; Result += "_$_"; Result += CatName;
|
|
Result += ",\n";
|
|
}
|
|
else
|
|
Result += "\t0,\n";
|
|
|
|
if (ClassMethods.size() > 0) {
|
|
Result += "\t(const struct _method_list_t *)&";
|
|
Result += "_OBJC_$_CATEGORY_CLASS_METHODS_";
|
|
Result += ClassName; Result += "_$_"; Result += CatName;
|
|
Result += ",\n";
|
|
}
|
|
else
|
|
Result += "\t0,\n";
|
|
|
|
if (RefedProtocols.size() > 0) {
|
|
Result += "\t(const struct _protocol_list_t *)&";
|
|
Result += "_OBJC_CATEGORY_PROTOCOLS_$_";
|
|
Result += ClassName; Result += "_$_"; Result += CatName;
|
|
Result += ",\n";
|
|
}
|
|
else
|
|
Result += "\t0,\n";
|
|
|
|
if (ClassProperties.size() > 0) {
|
|
Result += "\t(const struct _prop_list_t *)&"; Result += "_OBJC_$_PROP_LIST_";
|
|
Result += ClassName; Result += "_$_"; Result += CatName;
|
|
Result += ",\n";
|
|
}
|
|
else
|
|
Result += "\t0,\n";
|
|
|
|
Result += "};\n";
|
|
|
|
// Add static function to initialize the class pointer in the category structure.
|
|
Result += "static void OBJC_CATEGORY_SETUP_$_";
|
|
Result += ClassDecl->getNameAsString();
|
|
Result += "_$_";
|
|
Result += CatName;
|
|
Result += "(void ) {\n";
|
|
Result += "\t_OBJC_$_CATEGORY_";
|
|
Result += ClassDecl->getNameAsString();
|
|
Result += "_$_";
|
|
Result += CatName;
|
|
Result += ".cls = "; Result += "&OBJC_CLASS_$_"; Result += ClassName;
|
|
Result += ";\n}\n";
|
|
}
|
|
|
|
static void Write__extendedMethodTypes_initializer(RewriteModernObjC &RewriteObj,
|
|
ASTContext *Context, std::string &Result,
|
|
ArrayRef<ObjCMethodDecl *> Methods,
|
|
StringRef VarName,
|
|
StringRef ProtocolName) {
|
|
if (Methods.size() == 0)
|
|
return;
|
|
|
|
Result += "\nstatic const char *";
|
|
Result += VarName; Result += ProtocolName;
|
|
Result += " [] __attribute__ ((used, section (\"__DATA,__objc_const\"))) = \n";
|
|
Result += "{\n";
|
|
for (unsigned i = 0, e = Methods.size(); i < e; i++) {
|
|
ObjCMethodDecl *MD = Methods[i];
|
|
std::string MethodTypeString =
|
|
Context->getObjCEncodingForMethodDecl(MD, true);
|
|
std::string QuoteMethodTypeString;
|
|
RewriteObj.QuoteDoublequotes(MethodTypeString, QuoteMethodTypeString);
|
|
Result += "\t\""; Result += QuoteMethodTypeString; Result += "\"";
|
|
if (i == e-1)
|
|
Result += "\n};\n";
|
|
else {
|
|
Result += ",\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
static void Write_IvarOffsetVar(RewriteModernObjC &RewriteObj,
|
|
ASTContext *Context,
|
|
std::string &Result,
|
|
ArrayRef<ObjCIvarDecl *> Ivars,
|
|
ObjCInterfaceDecl *CDecl) {
|
|
// FIXME. visibilty of offset symbols may have to be set; for Darwin
|
|
// this is what happens:
|
|
/**
|
|
if (Ivar->getAccessControl() == ObjCIvarDecl::Private ||
|
|
Ivar->getAccessControl() == ObjCIvarDecl::Package ||
|
|
Class->getVisibility() == HiddenVisibility)
|
|
Visibility should be: HiddenVisibility;
|
|
else
|
|
Visibility should be: DefaultVisibility;
|
|
*/
|
|
|
|
Result += "\n";
|
|
for (unsigned i =0, e = Ivars.size(); i < e; i++) {
|
|
ObjCIvarDecl *IvarDecl = Ivars[i];
|
|
if (Context->getLangOpts().MicrosoftExt)
|
|
Result += "__declspec(allocate(\".objc_ivar$B\")) ";
|
|
|
|
if (!Context->getLangOpts().MicrosoftExt ||
|
|
IvarDecl->getAccessControl() == ObjCIvarDecl::Private ||
|
|
IvarDecl->getAccessControl() == ObjCIvarDecl::Package)
|
|
Result += "extern \"C\" unsigned long int ";
|
|
else
|
|
Result += "extern \"C\" __declspec(dllexport) unsigned long int ";
|
|
if (Ivars[i]->isBitField())
|
|
RewriteObj.ObjCIvarBitfieldGroupOffset(IvarDecl, Result);
|
|
else
|
|
WriteInternalIvarName(CDecl, IvarDecl, Result);
|
|
Result += " __attribute__ ((used, section (\"__DATA,__objc_ivar\")))";
|
|
Result += " = ";
|
|
RewriteObj.RewriteIvarOffsetComputation(IvarDecl, Result);
|
|
Result += ";\n";
|
|
if (Ivars[i]->isBitField()) {
|
|
// skip over rest of the ivar bitfields.
|
|
SKIP_BITFIELDS(i , e, Ivars);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void Write__ivar_list_t_initializer(RewriteModernObjC &RewriteObj,
|
|
ASTContext *Context, std::string &Result,
|
|
ArrayRef<ObjCIvarDecl *> OriginalIvars,
|
|
StringRef VarName,
|
|
ObjCInterfaceDecl *CDecl) {
|
|
if (OriginalIvars.size() > 0) {
|
|
Write_IvarOffsetVar(RewriteObj, Context, Result, OriginalIvars, CDecl);
|
|
SmallVector<ObjCIvarDecl *, 8> Ivars;
|
|
// strip off all but the first ivar bitfield from each group of ivars.
|
|
// Such ivars in the ivar list table will be replaced by their grouping struct
|
|
// 'ivar'.
|
|
for (unsigned i = 0, e = OriginalIvars.size(); i < e; i++) {
|
|
if (OriginalIvars[i]->isBitField()) {
|
|
Ivars.push_back(OriginalIvars[i]);
|
|
// skip over rest of the ivar bitfields.
|
|
SKIP_BITFIELDS(i , e, OriginalIvars);
|
|
}
|
|
else
|
|
Ivars.push_back(OriginalIvars[i]);
|
|
}
|
|
|
|
Result += "\nstatic ";
|
|
Write__ivar_list_t_TypeDecl(Result, Ivars.size());
|
|
Result += " "; Result += VarName;
|
|
Result += CDecl->getNameAsString();
|
|
Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
|
|
Result += "\t"; Result += "sizeof(_ivar_t)"; Result += ",\n";
|
|
Result += "\t"; Result += utostr(Ivars.size()); Result += ",\n";
|
|
for (unsigned i =0, e = Ivars.size(); i < e; i++) {
|
|
ObjCIvarDecl *IvarDecl = Ivars[i];
|
|
if (i == 0)
|
|
Result += "\t{{";
|
|
else
|
|
Result += "\t {";
|
|
Result += "(unsigned long int *)&";
|
|
if (Ivars[i]->isBitField())
|
|
RewriteObj.ObjCIvarBitfieldGroupOffset(IvarDecl, Result);
|
|
else
|
|
WriteInternalIvarName(CDecl, IvarDecl, Result);
|
|
Result += ", ";
|
|
|
|
Result += "\"";
|
|
if (Ivars[i]->isBitField())
|
|
RewriteObj.ObjCIvarBitfieldGroupDecl(Ivars[i], Result);
|
|
else
|
|
Result += IvarDecl->getName();
|
|
Result += "\", ";
|
|
|
|
QualType IVQT = IvarDecl->getType();
|
|
if (IvarDecl->isBitField())
|
|
IVQT = RewriteObj.GetGroupRecordTypeForObjCIvarBitfield(IvarDecl);
|
|
|
|
std::string IvarTypeString, QuoteIvarTypeString;
|
|
Context->getObjCEncodingForType(IVQT, IvarTypeString,
|
|
IvarDecl);
|
|
RewriteObj.QuoteDoublequotes(IvarTypeString, QuoteIvarTypeString);
|
|
Result += "\""; Result += QuoteIvarTypeString; Result += "\", ";
|
|
|
|
// FIXME. this alignment represents the host alignment and need be changed to
|
|
// represent the target alignment.
|
|
unsigned Align = Context->getTypeAlign(IVQT)/8;
|
|
Align = llvm::Log2_32(Align);
|
|
Result += llvm::utostr(Align); Result += ", ";
|
|
CharUnits Size = Context->getTypeSizeInChars(IVQT);
|
|
Result += llvm::utostr(Size.getQuantity());
|
|
if (i == e-1)
|
|
Result += "}}\n";
|
|
else
|
|
Result += "},\n";
|
|
}
|
|
Result += "};\n";
|
|
}
|
|
}
|
|
|
|
/// RewriteObjCProtocolMetaData - Rewrite protocols meta-data.
|
|
void RewriteModernObjC::RewriteObjCProtocolMetaData(ObjCProtocolDecl *PDecl,
|
|
std::string &Result) {
|
|
|
|
// Do not synthesize the protocol more than once.
|
|
if (ObjCSynthesizedProtocols.count(PDecl->getCanonicalDecl()))
|
|
return;
|
|
WriteModernMetadataDeclarations(Context, Result);
|
|
|
|
if (ObjCProtocolDecl *Def = PDecl->getDefinition())
|
|
PDecl = Def;
|
|
// Must write out all protocol definitions in current qualifier list,
|
|
// and in their nested qualifiers before writing out current definition.
|
|
for (auto *I : PDecl->protocols())
|
|
RewriteObjCProtocolMetaData(I, Result);
|
|
|
|
// Construct method lists.
|
|
std::vector<ObjCMethodDecl *> InstanceMethods, ClassMethods;
|
|
std::vector<ObjCMethodDecl *> OptInstanceMethods, OptClassMethods;
|
|
for (auto *MD : PDecl->instance_methods()) {
|
|
if (MD->getImplementationControl() == ObjCMethodDecl::Optional) {
|
|
OptInstanceMethods.push_back(MD);
|
|
} else {
|
|
InstanceMethods.push_back(MD);
|
|
}
|
|
}
|
|
|
|
for (auto *MD : PDecl->class_methods()) {
|
|
if (MD->getImplementationControl() == ObjCMethodDecl::Optional) {
|
|
OptClassMethods.push_back(MD);
|
|
} else {
|
|
ClassMethods.push_back(MD);
|
|
}
|
|
}
|
|
std::vector<ObjCMethodDecl *> AllMethods;
|
|
for (unsigned i = 0, e = InstanceMethods.size(); i < e; i++)
|
|
AllMethods.push_back(InstanceMethods[i]);
|
|
for (unsigned i = 0, e = ClassMethods.size(); i < e; i++)
|
|
AllMethods.push_back(ClassMethods[i]);
|
|
for (unsigned i = 0, e = OptInstanceMethods.size(); i < e; i++)
|
|
AllMethods.push_back(OptInstanceMethods[i]);
|
|
for (unsigned i = 0, e = OptClassMethods.size(); i < e; i++)
|
|
AllMethods.push_back(OptClassMethods[i]);
|
|
|
|
Write__extendedMethodTypes_initializer(*this, Context, Result,
|
|
AllMethods,
|
|
"_OBJC_PROTOCOL_METHOD_TYPES_",
|
|
PDecl->getNameAsString());
|
|
// Protocol's super protocol list
|
|
SmallVector<ObjCProtocolDecl *, 8> SuperProtocols(PDecl->protocols());
|
|
Write_protocol_list_initializer(Context, Result, SuperProtocols,
|
|
"_OBJC_PROTOCOL_REFS_",
|
|
PDecl->getNameAsString());
|
|
|
|
Write_method_list_t_initializer(*this, Context, Result, InstanceMethods,
|
|
"_OBJC_PROTOCOL_INSTANCE_METHODS_",
|
|
PDecl->getNameAsString(), false);
|
|
|
|
Write_method_list_t_initializer(*this, Context, Result, ClassMethods,
|
|
"_OBJC_PROTOCOL_CLASS_METHODS_",
|
|
PDecl->getNameAsString(), false);
|
|
|
|
Write_method_list_t_initializer(*this, Context, Result, OptInstanceMethods,
|
|
"_OBJC_PROTOCOL_OPT_INSTANCE_METHODS_",
|
|
PDecl->getNameAsString(), false);
|
|
|
|
Write_method_list_t_initializer(*this, Context, Result, OptClassMethods,
|
|
"_OBJC_PROTOCOL_OPT_CLASS_METHODS_",
|
|
PDecl->getNameAsString(), false);
|
|
|
|
// Protocol's property metadata.
|
|
SmallVector<ObjCPropertyDecl *, 8> ProtocolProperties(
|
|
PDecl->instance_properties());
|
|
Write_prop_list_t_initializer(*this, Context, Result, ProtocolProperties,
|
|
/* Container */nullptr,
|
|
"_OBJC_PROTOCOL_PROPERTIES_",
|
|
PDecl->getNameAsString());
|
|
|
|
// Writer out root metadata for current protocol: struct _protocol_t
|
|
Result += "\n";
|
|
if (LangOpts.MicrosoftExt)
|
|
Result += "static ";
|
|
Result += "struct _protocol_t _OBJC_PROTOCOL_";
|
|
Result += PDecl->getNameAsString();
|
|
Result += " __attribute__ ((used)) = {\n";
|
|
Result += "\t0,\n"; // id is; is null
|
|
Result += "\t\""; Result += PDecl->getNameAsString(); Result += "\",\n";
|
|
if (SuperProtocols.size() > 0) {
|
|
Result += "\t(const struct _protocol_list_t *)&"; Result += "_OBJC_PROTOCOL_REFS_";
|
|
Result += PDecl->getNameAsString(); Result += ",\n";
|
|
}
|
|
else
|
|
Result += "\t0,\n";
|
|
if (InstanceMethods.size() > 0) {
|
|
Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_INSTANCE_METHODS_";
|
|
Result += PDecl->getNameAsString(); Result += ",\n";
|
|
}
|
|
else
|
|
Result += "\t0,\n";
|
|
|
|
if (ClassMethods.size() > 0) {
|
|
Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_CLASS_METHODS_";
|
|
Result += PDecl->getNameAsString(); Result += ",\n";
|
|
}
|
|
else
|
|
Result += "\t0,\n";
|
|
|
|
if (OptInstanceMethods.size() > 0) {
|
|
Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_OPT_INSTANCE_METHODS_";
|
|
Result += PDecl->getNameAsString(); Result += ",\n";
|
|
}
|
|
else
|
|
Result += "\t0,\n";
|
|
|
|
if (OptClassMethods.size() > 0) {
|
|
Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_OPT_CLASS_METHODS_";
|
|
Result += PDecl->getNameAsString(); Result += ",\n";
|
|
}
|
|
else
|
|
Result += "\t0,\n";
|
|
|
|
if (ProtocolProperties.size() > 0) {
|
|
Result += "\t(const struct _prop_list_t *)&_OBJC_PROTOCOL_PROPERTIES_";
|
|
Result += PDecl->getNameAsString(); Result += ",\n";
|
|
}
|
|
else
|
|
Result += "\t0,\n";
|
|
|
|
Result += "\t"; Result += "sizeof(_protocol_t)"; Result += ",\n";
|
|
Result += "\t0,\n";
|
|
|
|
if (AllMethods.size() > 0) {
|
|
Result += "\t(const char **)&"; Result += "_OBJC_PROTOCOL_METHOD_TYPES_";
|
|
Result += PDecl->getNameAsString();
|
|
Result += "\n};\n";
|
|
}
|
|
else
|
|
Result += "\t0\n};\n";
|
|
|
|
if (LangOpts.MicrosoftExt)
|
|
Result += "static ";
|
|
Result += "struct _protocol_t *";
|
|
Result += "_OBJC_LABEL_PROTOCOL_$_"; Result += PDecl->getNameAsString();
|
|
Result += " = &_OBJC_PROTOCOL_"; Result += PDecl->getNameAsString();
|
|
Result += ";\n";
|
|
|
|
// Mark this protocol as having been generated.
|
|
if (!ObjCSynthesizedProtocols.insert(PDecl->getCanonicalDecl()).second)
|
|
llvm_unreachable("protocol already synthesized");
|
|
}
|
|
|
|
/// hasObjCExceptionAttribute - Return true if this class or any super
|
|
/// class has the __objc_exception__ attribute.
|
|
/// FIXME. Move this to ASTContext.cpp as it is also used for IRGen.
|
|
static bool hasObjCExceptionAttribute(ASTContext &Context,
|
|
const ObjCInterfaceDecl *OID) {
|
|
if (OID->hasAttr<ObjCExceptionAttr>())
|
|
return true;
|
|
if (const ObjCInterfaceDecl *Super = OID->getSuperClass())
|
|
return hasObjCExceptionAttribute(Context, Super);
|
|
return false;
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
|
|
std::string &Result) {
|
|
ObjCInterfaceDecl *CDecl = IDecl->getClassInterface();
|
|
|
|
// Explicitly declared @interface's are already synthesized.
|
|
if (CDecl->isImplicitInterfaceDecl())
|
|
assert(false &&
|
|
"Legacy implicit interface rewriting not supported in moder abi");
|
|
|
|
WriteModernMetadataDeclarations(Context, Result);
|
|
SmallVector<ObjCIvarDecl *, 8> IVars;
|
|
|
|
for (ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
|
|
IVD; IVD = IVD->getNextIvar()) {
|
|
// Ignore unnamed bit-fields.
|
|
if (!IVD->getDeclName())
|
|
continue;
|
|
IVars.push_back(IVD);
|
|
}
|
|
|
|
Write__ivar_list_t_initializer(*this, Context, Result, IVars,
|
|
"_OBJC_$_INSTANCE_VARIABLES_",
|
|
CDecl);
|
|
|
|
// Build _objc_method_list for class's instance methods if needed
|
|
SmallVector<ObjCMethodDecl *, 32> InstanceMethods(IDecl->instance_methods());
|
|
|
|
// If any of our property implementations have associated getters or
|
|
// setters, produce metadata for them as well.
|
|
for (const auto *Prop : IDecl->property_impls()) {
|
|
if (Prop->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
|
|
continue;
|
|
if (!Prop->getPropertyIvarDecl())
|
|
continue;
|
|
ObjCPropertyDecl *PD = Prop->getPropertyDecl();
|
|
if (!PD)
|
|
continue;
|
|
if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl())
|
|
if (mustSynthesizeSetterGetterMethod(IDecl, PD, true /*getter*/))
|
|
InstanceMethods.push_back(Getter);
|
|
if (PD->isReadOnly())
|
|
continue;
|
|
if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl())
|
|
if (mustSynthesizeSetterGetterMethod(IDecl, PD, false /*setter*/))
|
|
InstanceMethods.push_back(Setter);
|
|
}
|
|
|
|
Write_method_list_t_initializer(*this, Context, Result, InstanceMethods,
|
|
"_OBJC_$_INSTANCE_METHODS_",
|
|
IDecl->getNameAsString(), true);
|
|
|
|
SmallVector<ObjCMethodDecl *, 32> ClassMethods(IDecl->class_methods());
|
|
|
|
Write_method_list_t_initializer(*this, Context, Result, ClassMethods,
|
|
"_OBJC_$_CLASS_METHODS_",
|
|
IDecl->getNameAsString(), true);
|
|
|
|
// Protocols referenced in class declaration?
|
|
// Protocol's super protocol list
|
|
std::vector<ObjCProtocolDecl *> RefedProtocols;
|
|
const ObjCList<ObjCProtocolDecl> &Protocols = CDecl->getReferencedProtocols();
|
|
for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
|
|
E = Protocols.end();
|
|
I != E; ++I) {
|
|
RefedProtocols.push_back(*I);
|
|
// Must write out all protocol definitions in current qualifier list,
|
|
// and in their nested qualifiers before writing out current definition.
|
|
RewriteObjCProtocolMetaData(*I, Result);
|
|
}
|
|
|
|
Write_protocol_list_initializer(Context, Result,
|
|
RefedProtocols,
|
|
"_OBJC_CLASS_PROTOCOLS_$_",
|
|
IDecl->getNameAsString());
|
|
|
|
// Protocol's property metadata.
|
|
SmallVector<ObjCPropertyDecl *, 8> ClassProperties(
|
|
CDecl->instance_properties());
|
|
Write_prop_list_t_initializer(*this, Context, Result, ClassProperties,
|
|
/* Container */IDecl,
|
|
"_OBJC_$_PROP_LIST_",
|
|
CDecl->getNameAsString());
|
|
|
|
// Data for initializing _class_ro_t metaclass meta-data
|
|
uint32_t flags = CLS_META;
|
|
std::string InstanceSize;
|
|
std::string InstanceStart;
|
|
|
|
bool classIsHidden = CDecl->getVisibility() == HiddenVisibility;
|
|
if (classIsHidden)
|
|
flags |= OBJC2_CLS_HIDDEN;
|
|
|
|
if (!CDecl->getSuperClass())
|
|
// class is root
|
|
flags |= CLS_ROOT;
|
|
InstanceSize = "sizeof(struct _class_t)";
|
|
InstanceStart = InstanceSize;
|
|
Write__class_ro_t_initializer(Context, Result, flags,
|
|
InstanceStart, InstanceSize,
|
|
ClassMethods,
|
|
nullptr,
|
|
nullptr,
|
|
nullptr,
|
|
"_OBJC_METACLASS_RO_$_",
|
|
CDecl->getNameAsString());
|
|
|
|
// Data for initializing _class_ro_t meta-data
|
|
flags = CLS;
|
|
if (classIsHidden)
|
|
flags |= OBJC2_CLS_HIDDEN;
|
|
|
|
if (hasObjCExceptionAttribute(*Context, CDecl))
|
|
flags |= CLS_EXCEPTION;
|
|
|
|
if (!CDecl->getSuperClass())
|
|
// class is root
|
|
flags |= CLS_ROOT;
|
|
|
|
InstanceSize.clear();
|
|
InstanceStart.clear();
|
|
if (!ObjCSynthesizedStructs.count(CDecl)) {
|
|
InstanceSize = "0";
|
|
InstanceStart = "0";
|
|
}
|
|
else {
|
|
InstanceSize = "sizeof(struct ";
|
|
InstanceSize += CDecl->getNameAsString();
|
|
InstanceSize += "_IMPL)";
|
|
|
|
ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
|
|
if (IVD) {
|
|
RewriteIvarOffsetComputation(IVD, InstanceStart);
|
|
}
|
|
else
|
|
InstanceStart = InstanceSize;
|
|
}
|
|
Write__class_ro_t_initializer(Context, Result, flags,
|
|
InstanceStart, InstanceSize,
|
|
InstanceMethods,
|
|
RefedProtocols,
|
|
IVars,
|
|
ClassProperties,
|
|
"_OBJC_CLASS_RO_$_",
|
|
CDecl->getNameAsString());
|
|
|
|
Write_class_t(Context, Result,
|
|
"OBJC_METACLASS_$_",
|
|
CDecl, /*metaclass*/true);
|
|
|
|
Write_class_t(Context, Result,
|
|
"OBJC_CLASS_$_",
|
|
CDecl, /*metaclass*/false);
|
|
|
|
if (ImplementationIsNonLazy(IDecl))
|
|
DefinedNonLazyClasses.push_back(CDecl);
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteClassSetupInitHook(std::string &Result) {
|
|
int ClsDefCount = ClassImplementation.size();
|
|
if (!ClsDefCount)
|
|
return;
|
|
Result += "#pragma section(\".objc_inithooks$B\", long, read, write)\n";
|
|
Result += "__declspec(allocate(\".objc_inithooks$B\")) ";
|
|
Result += "static void *OBJC_CLASS_SETUP[] = {\n";
|
|
for (int i = 0; i < ClsDefCount; i++) {
|
|
ObjCImplementationDecl *IDecl = ClassImplementation[i];
|
|
ObjCInterfaceDecl *CDecl = IDecl->getClassInterface();
|
|
Result += "\t(void *)&OBJC_CLASS_SETUP_$_";
|
|
Result += CDecl->getName(); Result += ",\n";
|
|
}
|
|
Result += "};\n";
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteMetaDataIntoBuffer(std::string &Result) {
|
|
int ClsDefCount = ClassImplementation.size();
|
|
int CatDefCount = CategoryImplementation.size();
|
|
|
|
// For each implemented class, write out all its meta data.
|
|
for (int i = 0; i < ClsDefCount; i++)
|
|
RewriteObjCClassMetaData(ClassImplementation[i], Result);
|
|
|
|
RewriteClassSetupInitHook(Result);
|
|
|
|
// For each implemented category, write out all its meta data.
|
|
for (int i = 0; i < CatDefCount; i++)
|
|
RewriteObjCCategoryImplDecl(CategoryImplementation[i], Result);
|
|
|
|
RewriteCategorySetupInitHook(Result);
|
|
|
|
if (ClsDefCount > 0) {
|
|
if (LangOpts.MicrosoftExt)
|
|
Result += "__declspec(allocate(\".objc_classlist$B\")) ";
|
|
Result += "static struct _class_t *L_OBJC_LABEL_CLASS_$ [";
|
|
Result += llvm::utostr(ClsDefCount); Result += "]";
|
|
Result +=
|
|
" __attribute__((used, section (\"__DATA, __objc_classlist,"
|
|
"regular,no_dead_strip\")))= {\n";
|
|
for (int i = 0; i < ClsDefCount; i++) {
|
|
Result += "\t&OBJC_CLASS_$_";
|
|
Result += ClassImplementation[i]->getNameAsString();
|
|
Result += ",\n";
|
|
}
|
|
Result += "};\n";
|
|
|
|
if (!DefinedNonLazyClasses.empty()) {
|
|
if (LangOpts.MicrosoftExt)
|
|
Result += "__declspec(allocate(\".objc_nlclslist$B\")) \n";
|
|
Result += "static struct _class_t *_OBJC_LABEL_NONLAZY_CLASS_$[] = {\n\t";
|
|
for (unsigned i = 0, e = DefinedNonLazyClasses.size(); i < e; i++) {
|
|
Result += "\t&OBJC_CLASS_$_"; Result += DefinedNonLazyClasses[i]->getNameAsString();
|
|
Result += ",\n";
|
|
}
|
|
Result += "};\n";
|
|
}
|
|
}
|
|
|
|
if (CatDefCount > 0) {
|
|
if (LangOpts.MicrosoftExt)
|
|
Result += "__declspec(allocate(\".objc_catlist$B\")) ";
|
|
Result += "static struct _category_t *L_OBJC_LABEL_CATEGORY_$ [";
|
|
Result += llvm::utostr(CatDefCount); Result += "]";
|
|
Result +=
|
|
" __attribute__((used, section (\"__DATA, __objc_catlist,"
|
|
"regular,no_dead_strip\")))= {\n";
|
|
for (int i = 0; i < CatDefCount; i++) {
|
|
Result += "\t&_OBJC_$_CATEGORY_";
|
|
Result +=
|
|
CategoryImplementation[i]->getClassInterface()->getNameAsString();
|
|
Result += "_$_";
|
|
Result += CategoryImplementation[i]->getNameAsString();
|
|
Result += ",\n";
|
|
}
|
|
Result += "};\n";
|
|
}
|
|
|
|
if (!DefinedNonLazyCategories.empty()) {
|
|
if (LangOpts.MicrosoftExt)
|
|
Result += "__declspec(allocate(\".objc_nlcatlist$B\")) \n";
|
|
Result += "static struct _category_t *_OBJC_LABEL_NONLAZY_CATEGORY_$[] = {\n\t";
|
|
for (unsigned i = 0, e = DefinedNonLazyCategories.size(); i < e; i++) {
|
|
Result += "\t&_OBJC_$_CATEGORY_";
|
|
Result +=
|
|
DefinedNonLazyCategories[i]->getClassInterface()->getNameAsString();
|
|
Result += "_$_";
|
|
Result += DefinedNonLazyCategories[i]->getNameAsString();
|
|
Result += ",\n";
|
|
}
|
|
Result += "};\n";
|
|
}
|
|
}
|
|
|
|
void RewriteModernObjC::WriteImageInfo(std::string &Result) {
|
|
if (LangOpts.MicrosoftExt)
|
|
Result += "__declspec(allocate(\".objc_imageinfo$B\")) \n";
|
|
|
|
Result += "static struct IMAGE_INFO { unsigned version; unsigned flag; } ";
|
|
// version 0, ObjCABI is 2
|
|
Result += "_OBJC_IMAGE_INFO = { 0, 2 };\n";
|
|
}
|
|
|
|
/// RewriteObjCCategoryImplDecl - Rewrite metadata for each category
|
|
/// implementation.
|
|
void RewriteModernObjC::RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *IDecl,
|
|
std::string &Result) {
|
|
WriteModernMetadataDeclarations(Context, Result);
|
|
ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface();
|
|
// Find category declaration for this implementation.
|
|
ObjCCategoryDecl *CDecl
|
|
= ClassDecl->FindCategoryDeclaration(IDecl->getIdentifier());
|
|
|
|
std::string FullCategoryName = ClassDecl->getNameAsString();
|
|
FullCategoryName += "_$_";
|
|
FullCategoryName += CDecl->getNameAsString();
|
|
|
|
// Build _objc_method_list for class's instance methods if needed
|
|
SmallVector<ObjCMethodDecl *, 32> InstanceMethods(IDecl->instance_methods());
|
|
|
|
// If any of our property implementations have associated getters or
|
|
// setters, produce metadata for them as well.
|
|
for (const auto *Prop : IDecl->property_impls()) {
|
|
if (Prop->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
|
|
continue;
|
|
if (!Prop->getPropertyIvarDecl())
|
|
continue;
|
|
ObjCPropertyDecl *PD = Prop->getPropertyDecl();
|
|
if (!PD)
|
|
continue;
|
|
if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl())
|
|
InstanceMethods.push_back(Getter);
|
|
if (PD->isReadOnly())
|
|
continue;
|
|
if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl())
|
|
InstanceMethods.push_back(Setter);
|
|
}
|
|
|
|
Write_method_list_t_initializer(*this, Context, Result, InstanceMethods,
|
|
"_OBJC_$_CATEGORY_INSTANCE_METHODS_",
|
|
FullCategoryName, true);
|
|
|
|
SmallVector<ObjCMethodDecl *, 32> ClassMethods(IDecl->class_methods());
|
|
|
|
Write_method_list_t_initializer(*this, Context, Result, ClassMethods,
|
|
"_OBJC_$_CATEGORY_CLASS_METHODS_",
|
|
FullCategoryName, true);
|
|
|
|
// Protocols referenced in class declaration?
|
|
// Protocol's super protocol list
|
|
SmallVector<ObjCProtocolDecl *, 8> RefedProtocols(CDecl->protocols());
|
|
for (auto *I : CDecl->protocols())
|
|
// Must write out all protocol definitions in current qualifier list,
|
|
// and in their nested qualifiers before writing out current definition.
|
|
RewriteObjCProtocolMetaData(I, Result);
|
|
|
|
Write_protocol_list_initializer(Context, Result,
|
|
RefedProtocols,
|
|
"_OBJC_CATEGORY_PROTOCOLS_$_",
|
|
FullCategoryName);
|
|
|
|
// Protocol's property metadata.
|
|
SmallVector<ObjCPropertyDecl *, 8> ClassProperties(
|
|
CDecl->instance_properties());
|
|
Write_prop_list_t_initializer(*this, Context, Result, ClassProperties,
|
|
/* Container */IDecl,
|
|
"_OBJC_$_PROP_LIST_",
|
|
FullCategoryName);
|
|
|
|
Write_category_t(*this, Context, Result,
|
|
CDecl,
|
|
ClassDecl,
|
|
InstanceMethods,
|
|
ClassMethods,
|
|
RefedProtocols,
|
|
ClassProperties);
|
|
|
|
// Determine if this category is also "non-lazy".
|
|
if (ImplementationIsNonLazy(IDecl))
|
|
DefinedNonLazyCategories.push_back(CDecl);
|
|
}
|
|
|
|
void RewriteModernObjC::RewriteCategorySetupInitHook(std::string &Result) {
|
|
int CatDefCount = CategoryImplementation.size();
|
|
if (!CatDefCount)
|
|
return;
|
|
Result += "#pragma section(\".objc_inithooks$B\", long, read, write)\n";
|
|
Result += "__declspec(allocate(\".objc_inithooks$B\")) ";
|
|
Result += "static void *OBJC_CATEGORY_SETUP[] = {\n";
|
|
for (int i = 0; i < CatDefCount; i++) {
|
|
ObjCCategoryImplDecl *IDecl = CategoryImplementation[i];
|
|
ObjCCategoryDecl *CatDecl= IDecl->getCategoryDecl();
|
|
ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface();
|
|
Result += "\t(void *)&OBJC_CATEGORY_SETUP_$_";
|
|
Result += ClassDecl->getName();
|
|
Result += "_$_";
|
|
Result += CatDecl->getName();
|
|
Result += ",\n";
|
|
}
|
|
Result += "};\n";
|
|
}
|
|
|
|
// RewriteObjCMethodsMetaData - Rewrite methods metadata for instance or
|
|
/// class methods.
|
|
template<typename MethodIterator>
|
|
void RewriteModernObjC::RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
|
|
MethodIterator MethodEnd,
|
|
bool IsInstanceMethod,
|
|
StringRef prefix,
|
|
StringRef ClassName,
|
|
std::string &Result) {
|
|
if (MethodBegin == MethodEnd) return;
|
|
|
|
if (!objc_impl_method) {
|
|
/* struct _objc_method {
|
|
SEL _cmd;
|
|
char *method_types;
|
|
void *_imp;
|
|
}
|
|
*/
|
|
Result += "\nstruct _objc_method {\n";
|
|
Result += "\tSEL _cmd;\n";
|
|
Result += "\tchar *method_types;\n";
|
|
Result += "\tvoid *_imp;\n";
|
|
Result += "};\n";
|
|
|
|
objc_impl_method = true;
|
|
}
|
|
|
|
// Build _objc_method_list for class's methods if needed
|
|
|
|
/* struct {
|
|
struct _objc_method_list *next_method;
|
|
int method_count;
|
|
struct _objc_method method_list[];
|
|
}
|
|
*/
|
|
unsigned NumMethods = std::distance(MethodBegin, MethodEnd);
|
|
Result += "\n";
|
|
if (LangOpts.MicrosoftExt) {
|
|
if (IsInstanceMethod)
|
|
Result += "__declspec(allocate(\".inst_meth$B\")) ";
|
|
else
|
|
Result += "__declspec(allocate(\".cls_meth$B\")) ";
|
|
}
|
|
Result += "static struct {\n";
|
|
Result += "\tstruct _objc_method_list *next_method;\n";
|
|
Result += "\tint method_count;\n";
|
|
Result += "\tstruct _objc_method method_list[";
|
|
Result += utostr(NumMethods);
|
|
Result += "];\n} _OBJC_";
|
|
Result += prefix;
|
|
Result += IsInstanceMethod ? "INSTANCE" : "CLASS";
|
|
Result += "_METHODS_";
|
|
Result += ClassName;
|
|
Result += " __attribute__ ((used, section (\"__OBJC, __";
|
|
Result += IsInstanceMethod ? "inst" : "cls";
|
|
Result += "_meth\")))= ";
|
|
Result += "{\n\t0, " + utostr(NumMethods) + "\n";
|
|
|
|
Result += "\t,{{(SEL)\"";
|
|
Result += (*MethodBegin)->getSelector().getAsString().c_str();
|
|
std::string MethodTypeString;
|
|
Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
|
|
Result += "\", \"";
|
|
Result += MethodTypeString;
|
|
Result += "\", (void *)";
|
|
Result += MethodInternalNames[*MethodBegin];
|
|
Result += "}\n";
|
|
for (++MethodBegin; MethodBegin != MethodEnd; ++MethodBegin) {
|
|
Result += "\t ,{(SEL)\"";
|
|
Result += (*MethodBegin)->getSelector().getAsString().c_str();
|
|
std::string MethodTypeString;
|
|
Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
|
|
Result += "\", \"";
|
|
Result += MethodTypeString;
|
|
Result += "\", (void *)";
|
|
Result += MethodInternalNames[*MethodBegin];
|
|
Result += "}\n";
|
|
}
|
|
Result += "\t }\n};\n";
|
|
}
|
|
|
|
Stmt *RewriteModernObjC::RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV) {
|
|
SourceRange OldRange = IV->getSourceRange();
|
|
Expr *BaseExpr = IV->getBase();
|
|
|
|
// Rewrite the base, but without actually doing replaces.
|
|
{
|
|
DisableReplaceStmtScope S(*this);
|
|
BaseExpr = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(BaseExpr));
|
|
IV->setBase(BaseExpr);
|
|
}
|
|
|
|
ObjCIvarDecl *D = IV->getDecl();
|
|
|
|
Expr *Replacement = IV;
|
|
|
|
if (BaseExpr->getType()->isObjCObjectPointerType()) {
|
|
const ObjCInterfaceType *iFaceDecl =
|
|
dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType());
|
|
assert(iFaceDecl && "RewriteObjCIvarRefExpr - iFaceDecl is null");
|
|
// lookup which class implements the instance variable.
|
|
ObjCInterfaceDecl *clsDeclared = nullptr;
|
|
iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(),
|
|
clsDeclared);
|
|
assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class");
|
|
|
|
// Build name of symbol holding ivar offset.
|
|
std::string IvarOffsetName;
|
|
if (D->isBitField())
|
|
ObjCIvarBitfieldGroupOffset(D, IvarOffsetName);
|
|
else
|
|
WriteInternalIvarName(clsDeclared, D, IvarOffsetName);
|
|
|
|
ReferencedIvars[clsDeclared].insert(D);
|
|
|
|
// cast offset to "char *".
|
|
CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context,
|
|
Context->getPointerType(Context->CharTy),
|
|
CK_BitCast,
|
|
BaseExpr);
|
|
VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
|
|
SourceLocation(), &Context->Idents.get(IvarOffsetName),
|
|
Context->UnsignedLongTy, nullptr,
|
|
SC_Extern);
|
|
DeclRefExpr *DRE = new (Context)
|
|
DeclRefExpr(*Context, NewVD, false, Context->UnsignedLongTy,
|
|
VK_LValue, SourceLocation());
|
|
BinaryOperator *addExpr =
|
|
new (Context) BinaryOperator(castExpr, DRE, BO_Add,
|
|
Context->getPointerType(Context->CharTy),
|
|
VK_RValue, OK_Ordinary, SourceLocation(), FPOptions());
|
|
// Don't forget the parens to enforce the proper binding.
|
|
ParenExpr *PE = new (Context) ParenExpr(SourceLocation(),
|
|
SourceLocation(),
|
|
addExpr);
|
|
QualType IvarT = D->getType();
|
|
if (D->isBitField())
|
|
IvarT = GetGroupRecordTypeForObjCIvarBitfield(D);
|
|
|
|
if (!isa<TypedefType>(IvarT) && IvarT->isRecordType()) {
|
|
RecordDecl *RD = IvarT->getAs<RecordType>()->getDecl();
|
|
RD = RD->getDefinition();
|
|
if (RD && !RD->getDeclName().getAsIdentifierInfo()) {
|
|
// decltype(((Foo_IMPL*)0)->bar) *
|
|
ObjCContainerDecl *CDecl =
|
|
dyn_cast<ObjCContainerDecl>(D->getDeclContext());
|
|
// ivar in class extensions requires special treatment.
|
|
if (ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(CDecl))
|
|
CDecl = CatDecl->getClassInterface();
|
|
std::string RecName = CDecl->getName();
|
|
RecName += "_IMPL";
|
|
RecordDecl *RD = RecordDecl::Create(
|
|
*Context, TTK_Struct, TUDecl, SourceLocation(), SourceLocation(),
|
|
&Context->Idents.get(RecName));
|
|
QualType PtrStructIMPL = Context->getPointerType(Context->getTagDeclType(RD));
|
|
unsigned UnsignedIntSize =
|
|
static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
|
|
Expr *Zero = IntegerLiteral::Create(*Context,
|
|
llvm::APInt(UnsignedIntSize, 0),
|
|
Context->UnsignedIntTy, SourceLocation());
|
|
Zero = NoTypeInfoCStyleCastExpr(Context, PtrStructIMPL, CK_BitCast, Zero);
|
|
ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
|
|
Zero);
|
|
FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
|
|
SourceLocation(),
|
|
&Context->Idents.get(D->getNameAsString()),
|
|
IvarT, nullptr,
|
|
/*BitWidth=*/nullptr,
|
|
/*Mutable=*/true, ICIS_NoInit);
|
|
MemberExpr *ME = MemberExpr::CreateImplicit(
|
|
*Context, PE, true, FD, FD->getType(), VK_LValue, OK_Ordinary);
|
|
IvarT = Context->getDecltypeType(ME, ME->getType());
|
|
}
|
|
}
|
|
convertObjCTypeToCStyleType(IvarT);
|
|
QualType castT = Context->getPointerType(IvarT);
|
|
|
|
castExpr = NoTypeInfoCStyleCastExpr(Context,
|
|
castT,
|
|
CK_BitCast,
|
|
PE);
|
|
|
|
|
|
Expr *Exp = new (Context) UnaryOperator(castExpr, UO_Deref, IvarT,
|
|
VK_LValue, OK_Ordinary,
|
|
SourceLocation(), false);
|
|
PE = new (Context) ParenExpr(OldRange.getBegin(),
|
|
OldRange.getEnd(),
|
|
Exp);
|
|
|
|
if (D->isBitField()) {
|
|
FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
|
|
SourceLocation(),
|
|
&Context->Idents.get(D->getNameAsString()),
|
|
D->getType(), nullptr,
|
|
/*BitWidth=*/D->getBitWidth(),
|
|
/*Mutable=*/true, ICIS_NoInit);
|
|
MemberExpr *ME =
|
|
MemberExpr::CreateImplicit(*Context, PE, /*isArrow*/ false, FD,
|
|
FD->getType(), VK_LValue, OK_Ordinary);
|
|
Replacement = ME;
|
|
|
|
}
|
|
else
|
|
Replacement = PE;
|
|
}
|
|
|
|
ReplaceStmtWithRange(IV, Replacement, OldRange);
|
|
return Replacement;
|
|
}
|
|
|
|
#endif // CLANG_ENABLE_OBJC_REWRITER
|