forked from OSchip/llvm-project
4588 lines
180 KiB
C++
4588 lines
180 KiB
C++
//===--- RewriteObjC.cpp - Playground for the code rewriter ---------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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 "ASTConsumers.h"
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#include "clang/Rewrite/Rewriter.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/TranslationUnit.h"
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#include "clang/AST/ParentMap.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Lex/Lexer.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/OwningPtr.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Streams.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/System/Path.h"
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using namespace clang;
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using llvm::utostr;
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static llvm::cl::opt<bool>
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SilenceRewriteMacroWarning("Wno-rewrite-macros", llvm::cl::init(false),
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llvm::cl::desc("Silence ObjC rewriting warnings"));
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namespace {
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class RewriteObjC : public ASTConsumer {
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Rewriter Rewrite;
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Diagnostic &Diags;
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const LangOptions &LangOpts;
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unsigned RewriteFailedDiag;
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unsigned TryFinallyContainsReturnDiag;
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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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SourceLocation LastIncLoc;
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llvm::SmallVector<ObjCImplementationDecl *, 8> ClassImplementation;
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llvm::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> ObjCForwardDecls;
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llvm::DenseMap<ObjCMethodDecl*, std::string> MethodInternalNames;
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llvm::SmallVector<Stmt *, 32> Stmts;
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llvm::SmallVector<int, 8> ObjCBcLabelNo;
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unsigned NumObjCStringLiterals;
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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 *SelGetUidFunctionDecl;
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FunctionDecl *CFStringFunctionDecl;
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FunctionDecl *GetProtocolFunctionDecl;
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FunctionDecl *SuperContructorFunctionDecl;
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// ObjC string constant support.
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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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// 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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// Needed for header files being rewritten
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bool IsHeader;
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std::string InFileName;
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std::string OutFileName;
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std::string Preamble;
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// Block expressions.
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llvm::SmallVector<BlockExpr *, 32> Blocks;
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llvm::SmallVector<BlockDeclRefExpr *, 32> BlockDeclRefs;
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llvm::DenseMap<BlockDeclRefExpr *, CallExpr *> BlockCallExprs;
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// Block related declarations.
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llvm::SmallPtrSet<ValueDecl *, 8> BlockByCopyDecls;
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llvm::SmallPtrSet<ValueDecl *, 8> BlockByRefDecls;
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llvm::SmallPtrSet<ValueDecl *, 8> ImportedBlockDecls;
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llvm::DenseMap<BlockExpr *, std::string> RewrittenBlockExprs;
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// This maps a property to it's assignment statement.
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llvm::DenseMap<ObjCPropertyRefExpr *, BinaryOperator *> PropSetters;
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// This maps a property to it's synthesied message expression.
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// This allows us to rewrite chained getters (e.g. o.a.b.c).
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llvm::DenseMap<ObjCPropertyRefExpr *, Stmt *> PropGetters;
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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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FunctionDecl *CurFunctionDef;
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VarDecl *GlobalVarDecl;
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bool DisableReplaceStmt;
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static const int OBJC_ABI_VERSION =7 ;
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public:
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virtual void Initialize(ASTContext &context);
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virtual void InitializeTU(TranslationUnit &TU) {
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TU.SetOwnsDecls(false);
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Initialize(TU.getContext());
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}
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// Top Level Driver code.
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virtual void HandleTopLevelDecl(Decl *D);
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void HandleDeclInMainFile(Decl *D);
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RewriteObjC(std::string inFile, std::string outFile,
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Diagnostic &D, const LangOptions &LOpts);
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~RewriteObjC() {}
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virtual void HandleTranslationUnit(TranslationUnit& TU);
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void ReplaceStmt(Stmt *Old, Stmt *New) {
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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; // Used when rewriting the assignment of a property setter.
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// If replacement succeeded or warning disabled return with no warning.
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if (!Rewrite.ReplaceStmt(Old, New)) {
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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->getLocStart()), RewriteFailedDiag)
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<< Old->getSourceRange();
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}
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void ReplaceStmtWithRange(Stmt *Old, Stmt *New, SourceRange SrcRange) {
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// Measaure 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->getLocStart()), 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);
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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[0], Str.size())) {
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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->getLocStart()), RewriteFailedDiag)
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<< Old->getSourceRange();
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}
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void InsertText(SourceLocation Loc, const char *StrData, unsigned StrLen,
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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, StrData, StrLen, 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 RemoveText(SourceLocation Loc, unsigned StrLen) {
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// If removal succeeded or warning disabled return with no warning.
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if (!Rewrite.RemoveText(Loc, StrLen) || 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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const char *NewStr, unsigned NewLength) {
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// If removal succeeded or warning disabled return with no warning.
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if (!Rewrite.ReplaceText(Start, OrigLength, NewStr, NewLength) ||
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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 RewritePrologue(SourceLocation Loc);
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void RewriteInclude();
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void RewriteTabs();
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void RewriteForwardClassDecl(ObjCClassDecl *Dcl);
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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(ObjCMethodDecl *MDecl, std::string &ResultStr);
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void RewriteCategoryDecl(ObjCCategoryDecl *Dcl);
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void RewriteProtocolDecl(ObjCProtocolDecl *Dcl);
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void RewriteForwardProtocolDecl(ObjCForwardProtocolDecl *Dcl);
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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 RewriteObjCQualifiedInterfaceTypes(Decl *Dcl);
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void RewriteObjCQualifiedInterfaceTypes(Expr *E);
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bool needToScanForQualifiers(QualType T);
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ObjCInterfaceDecl *isSuperReceiver(Expr *recExpr);
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QualType getSuperStructType();
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QualType getConstantStringStructType();
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bool BufferContainsPPDirectives(const char *startBuf, const char *endBuf);
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// Expression Rewriting.
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Stmt *RewriteFunctionBodyOrGlobalInitializer(Stmt *S);
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void CollectPropertySetters(Stmt *S);
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Stmt *CurrentBody;
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ParentMap *PropParentMap; // created lazily.
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Stmt *RewriteAtEncode(ObjCEncodeExpr *Exp);
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Stmt *RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV, SourceLocation OrigStart);
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Stmt *RewritePropertyGetter(ObjCPropertyRefExpr *PropRefExpr);
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Stmt *RewritePropertySetter(BinaryOperator *BinOp, Expr *newStmt,
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SourceRange SrcRange);
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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 *RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp);
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void WarnAboutReturnGotoContinueOrBreakStmts(Stmt *S);
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Stmt *RewriteObjCTryStmt(ObjCAtTryStmt *S);
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Stmt *RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S);
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Stmt *RewriteObjCCatchStmt(ObjCAtCatchStmt *S);
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Stmt *RewriteObjCFinallyStmt(ObjCAtFinallyStmt *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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CallExpr *SynthesizeCallToFunctionDecl(FunctionDecl *FD,
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Expr **args, unsigned nargs);
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Stmt *SynthMessageExpr(ObjCMessageExpr *Exp);
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Stmt *RewriteBreakStmt(BreakStmt *S);
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Stmt *RewriteContinueStmt(ContinueStmt *S);
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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 SynthSelGetUidFunctionDecl();
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void SynthGetProtocolFunctionDecl();
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void SynthSuperContructorFunctionDecl();
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// Metadata emission.
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void RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
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std::string &Result);
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void RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *CDecl,
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std::string &Result);
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typedef ObjCCategoryImplDecl::instmeth_iterator instmeth_iterator;
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void RewriteObjCMethodsMetaData(instmeth_iterator MethodBegin,
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instmeth_iterator MethodEnd,
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bool IsInstanceMethod,
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const char *prefix,
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const char *ClassName,
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std::string &Result);
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void RewriteObjCProtocolsMetaData(const ObjCList<ObjCProtocolDecl>
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&Protocols,
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const char *prefix,
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const char *ClassName,
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std::string &Result);
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void SynthesizeObjCInternalStruct(ObjCInterfaceDecl *CDecl,
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std::string &Result);
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void SynthesizeIvarOffsetComputation(ObjCImplementationDecl *IDecl,
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ObjCIvarDecl *ivar,
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std::string &Result);
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void RewriteImplementations();
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void SynthesizeMetaDataIntoBuffer(std::string &Result);
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// Block rewriting.
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void RewriteBlocksInFunctionTypeProto(QualType funcType, NamedDecl *D);
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void CheckFunctionPointerDecl(QualType dType, NamedDecl *ND);
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void InsertBlockLiteralsWithinFunction(FunctionDecl *FD);
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void InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD);
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// Block specific rewrite rules.
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void RewriteBlockCall(CallExpr *Exp);
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void RewriteBlockPointerDecl(NamedDecl *VD);
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void RewriteBlockDeclRefExpr(BlockDeclRefExpr *VD);
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void RewriteBlockPointerFunctionArgs(FunctionDecl *FD);
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std::string SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
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const char *funcName, std::string Tag);
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std::string SynthesizeBlockFunc(BlockExpr *CE, int i,
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const char *funcName, std::string Tag);
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std::string SynthesizeBlockImpl(BlockExpr *CE, std::string Tag,
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bool hasCopyDisposeHelpers);
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Stmt *SynthesizeBlockCall(CallExpr *Exp);
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void SynthesizeBlockLiterals(SourceLocation FunLocStart,
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const char *FunName);
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void CollectBlockDeclRefInfo(BlockExpr *Exp);
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void GetBlockCallExprs(Stmt *S);
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void GetBlockDeclRefExprs(Stmt *S);
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// We avoid calling Type::isBlockPointerType(), since it operates on the
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// canonical type. We only care if the top-level type is a closure pointer.
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bool isTopLevelBlockPointerType(QualType T) {
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return isa<BlockPointerType>(T);
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}
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// FIXME: This predicate seems like it would be useful to add to ASTContext.
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bool isObjCType(QualType T) {
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if (!LangOpts.ObjC1 && !LangOpts.ObjC2)
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return false;
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QualType OCT = Context->getCanonicalType(T).getUnqualifiedType();
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if (OCT == Context->getCanonicalType(Context->getObjCIdType()) ||
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OCT == Context->getCanonicalType(Context->getObjCClassType()))
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return true;
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if (const PointerType *PT = OCT->getAsPointerType()) {
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if (isa<ObjCInterfaceType>(PT->getPointeeType()) ||
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isa<ObjCQualifiedIdType>(PT->getPointeeType()))
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return true;
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}
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return false;
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}
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bool PointerTypeTakesAnyBlockArguments(QualType QT);
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void GetExtentOfArgList(const char *Name, const char *&LParen,
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const char *&RParen);
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void RewriteCastExpr(CStyleCastExpr *CE);
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FunctionDecl *SynthBlockInitFunctionDecl(const char *name);
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Stmt *SynthBlockInitExpr(BlockExpr *Exp);
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};
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}
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void RewriteObjC::RewriteBlocksInFunctionTypeProto(QualType funcType,
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NamedDecl *D) {
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if (FunctionTypeProto *fproto = dyn_cast<FunctionTypeProto>(funcType)) {
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for (FunctionTypeProto::arg_type_iterator I = fproto->arg_type_begin(),
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E = fproto->arg_type_end(); I && (I != E); ++I)
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if (isTopLevelBlockPointerType(*I)) {
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// All the args are checked/rewritten. Don't call twice!
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RewriteBlockPointerDecl(D);
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break;
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}
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}
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}
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void RewriteObjC::CheckFunctionPointerDecl(QualType funcType, NamedDecl *ND) {
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const PointerType *PT = funcType->getAsPointerType();
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if (PT && PointerTypeTakesAnyBlockArguments(funcType))
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RewriteBlocksInFunctionTypeProto(PT->getPointeeType(), ND);
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}
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static bool IsHeaderFile(const std::string &Filename) {
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std::string::size_type DotPos = Filename.rfind('.');
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if (DotPos == std::string::npos) {
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// no file extension
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return false;
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}
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std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end());
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// C header: .h
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// C++ header: .hh or .H;
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return Ext == "h" || Ext == "hh" || Ext == "H";
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}
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RewriteObjC::RewriteObjC(std::string inFile, std::string outFile,
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Diagnostic &D, const LangOptions &LOpts)
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: Diags(D), LangOpts(LOpts) {
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IsHeader = IsHeaderFile(inFile);
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InFileName = inFile;
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OutFileName = outFile;
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RewriteFailedDiag = Diags.getCustomDiagID(Diagnostic::Warning,
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"rewriting sub-expression within a macro (may not be correct)");
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TryFinallyContainsReturnDiag = Diags.getCustomDiagID(Diagnostic::Warning,
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"rewriter doesn't support user-specified control flow semantics "
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"for @try/@finally (code may not execute properly)");
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}
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ASTConsumer *clang::CreateCodeRewriterTest(const std::string& InFile,
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const std::string& OutFile,
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Diagnostic &Diags,
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const LangOptions &LOpts) {
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return new RewriteObjC(InFile, OutFile, Diags, LOpts);
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}
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void RewriteObjC::Initialize(ASTContext &context) {
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Context = &context;
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SM = &Context->getSourceManager();
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TUDecl = Context->getTranslationUnitDecl();
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MsgSendFunctionDecl = 0;
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MsgSendSuperFunctionDecl = 0;
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MsgSendStretFunctionDecl = 0;
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MsgSendSuperStretFunctionDecl = 0;
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MsgSendFpretFunctionDecl = 0;
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GetClassFunctionDecl = 0;
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GetMetaClassFunctionDecl = 0;
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SelGetUidFunctionDecl = 0;
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CFStringFunctionDecl = 0;
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GetProtocolFunctionDecl = 0;
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ConstantStringClassReference = 0;
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NSStringRecord = 0;
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CurMethodDef = 0;
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CurFunctionDef = 0;
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GlobalVarDecl = 0;
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SuperStructDecl = 0;
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ConstantStringDecl = 0;
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BcLabelCount = 0;
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SuperContructorFunctionDecl = 0;
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NumObjCStringLiterals = 0;
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PropParentMap = 0;
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CurrentBody = 0;
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DisableReplaceStmt = false;
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// Get the ID and start/end of the main file.
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MainFileID = SM->getMainFileID();
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const llvm::MemoryBuffer *MainBuf = SM->getBuffer(MainFileID);
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MainFileStart = MainBuf->getBufferStart();
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MainFileEnd = MainBuf->getBufferEnd();
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Rewrite.setSourceMgr(Context->getSourceManager());
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// declaring objc_selector outside the parameter list removes a silly
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// scope related warning...
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if (IsHeader)
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Preamble = "#pragma once\n";
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Preamble += "struct objc_selector; struct objc_class;\n";
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Preamble += "struct __rw_objc_super { struct objc_object *object; ";
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Preamble += "struct objc_object *superClass; ";
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if (LangOpts.Microsoft) {
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// Add a constructor for creating temporary objects.
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Preamble += "__rw_objc_super(struct objc_object *o, struct objc_object *s) "
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": ";
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Preamble += "object(o), superClass(s) {} ";
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}
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Preamble += "};\n";
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Preamble += "#ifndef _REWRITER_typedef_Protocol\n";
|
|
Preamble += "typedef struct objc_object Protocol;\n";
|
|
Preamble += "#define _REWRITER_typedef_Protocol\n";
|
|
Preamble += "#endif\n";
|
|
if (LangOpts.Microsoft) {
|
|
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 struct objc_object *objc_msgSend";
|
|
Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSendSuper";
|
|
Preamble += "(struct objc_super *, struct objc_selector *, ...);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSend_stret";
|
|
Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSendSuper_stret";
|
|
Preamble += "(struct objc_super *, struct objc_selector *, ...);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT double objc_msgSend_fpret";
|
|
Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_getClass";
|
|
Preamble += "(const char *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_getMetaClass";
|
|
Preamble += "(const char *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_throw(struct objc_object *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_try_enter(void *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_try_exit(void *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_exception_extract(void *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT int objc_exception_match";
|
|
Preamble += "(struct objc_class *, struct objc_object *);\n";
|
|
// @synchronized hooks.
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_sync_enter(struct objc_object *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT void objc_sync_exit(struct objc_object *);\n";
|
|
Preamble += "__OBJC_RW_DLLIMPORT Protocol *objc_getProtocol(const char *);\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 += " long length;\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 Size;\n";
|
|
Preamble += " void *FuncPtr;\n";
|
|
Preamble += "};\n";
|
|
Preamble += "// Runtime copy/destroy helper functions (from Block_private.h)\n";
|
|
Preamble += "__OBJC_RW_STATICIMPORT void _Block_object_assign(void *, const void *, const int);\n";
|
|
Preamble += "__OBJC_RW_STATICIMPORT void _Block_object_dispose(const void *, const int);\n";
|
|
Preamble += "__OBJC_RW_STATICIMPORT void *_NSConcreteGlobalBlock[32];\n";
|
|
Preamble += "__OBJC_RW_STATICIMPORT void *_NSConcreteStackBlock[32];\n";
|
|
Preamble += "#endif\n";
|
|
if (LangOpts.Microsoft) {
|
|
Preamble += "#undef __OBJC_RW_DLLIMPORT\n";
|
|
Preamble += "#undef __OBJC_RW_STATICIMPORT\n";
|
|
Preamble += "#define __attribute__(X)\n";
|
|
}
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Top Level Driver Code
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void RewriteObjC::HandleTopLevelDecl(Decl *D) {
|
|
// 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->getInstantiationLoc(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 (strcmp(FVD->getNameAsCString(), "_NSConstantStringClassReference") == 0) {
|
|
ConstantStringClassReference = FVD;
|
|
return;
|
|
}
|
|
} else if (ObjCInterfaceDecl *MD = dyn_cast<ObjCInterfaceDecl>(D)) {
|
|
RewriteInterfaceDecl(MD);
|
|
} else if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(D)) {
|
|
RewriteCategoryDecl(CD);
|
|
} else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
|
|
RewriteProtocolDecl(PD);
|
|
} else if (ObjCForwardProtocolDecl *FP =
|
|
dyn_cast<ObjCForwardProtocolDecl>(D)){
|
|
RewriteForwardProtocolDecl(FP);
|
|
} 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; ++DI)
|
|
HandleTopLevelDecl(*DI);
|
|
}
|
|
// If we have a decl in the main file, see if we should rewrite it.
|
|
if (SM->isFromMainFile(Loc))
|
|
return HandleDeclInMainFile(D);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Syntactic (non-AST) Rewriting Code
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void RewriteObjC::RewriteInclude() {
|
|
SourceLocation LocStart = SM->getLocForStartOfFile(MainFileID);
|
|
std::pair<const char*, const char*> MainBuf = SM->getBufferData(MainFileID);
|
|
const char *MainBufStart = MainBuf.first;
|
|
const char *MainBufEnd = MainBuf.second;
|
|
size_t ImportLen = strlen("import");
|
|
size_t IncludeLen = strlen("include");
|
|
|
|
// 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.getFileLocWithOffset(BufPtr-MainBufStart);
|
|
ReplaceText(ImportLoc, ImportLen, "include", IncludeLen);
|
|
BufPtr += ImportLen;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void RewriteObjC::RewriteTabs() {
|
|
std::pair<const char*, const char*> MainBuf = SM->getBufferData(MainFileID);
|
|
const char *MainBufStart = MainBuf.first;
|
|
const char *MainBufEnd = MainBuf.second;
|
|
|
|
// Loop over the whole file, looking for tabs.
|
|
for (const char *BufPtr = MainBufStart; BufPtr != MainBufEnd; ++BufPtr) {
|
|
if (*BufPtr != '\t')
|
|
continue;
|
|
|
|
// Okay, we found a tab. This tab will turn into at least one character,
|
|
// but it depends on which 'virtual column' it is in. Compute that now.
|
|
unsigned VCol = 0;
|
|
while (BufPtr-VCol != MainBufStart && BufPtr[-VCol-1] != '\t' &&
|
|
BufPtr[-VCol-1] != '\n' && BufPtr[-VCol-1] != '\r')
|
|
++VCol;
|
|
|
|
// Okay, now that we know the virtual column, we know how many spaces to
|
|
// insert. We assume 8-character tab-stops.
|
|
unsigned Spaces = 8-(VCol & 7);
|
|
|
|
// Get the location of the tab.
|
|
SourceLocation TabLoc = SM->getLocForStartOfFile(MainFileID);
|
|
TabLoc = TabLoc.getFileLocWithOffset(BufPtr-MainBufStart);
|
|
|
|
// Rewrite the single tab character into a sequence of spaces.
|
|
ReplaceText(TabLoc, 1, " ", Spaces);
|
|
}
|
|
}
|
|
|
|
static std::string getIvarAccessString(ObjCInterfaceDecl *ClassDecl,
|
|
ObjCIvarDecl *OID) {
|
|
std::string S;
|
|
S = "((struct ";
|
|
S += ClassDecl->getIdentifier()->getName();
|
|
S += "_IMPL *)self)->";
|
|
S += OID->getNameAsCString();
|
|
return S;
|
|
}
|
|
|
|
void RewriteObjC::RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
|
|
ObjCImplementationDecl *IMD,
|
|
ObjCCategoryImplDecl *CID) {
|
|
SourceLocation startLoc = PID->getLocStart();
|
|
InsertText(startLoc, "// ", 3);
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
assert((*startBuf == '@') && "bogus @synthesize location");
|
|
const char *semiBuf = strchr(startBuf, ';');
|
|
assert((*semiBuf == ';') && "@synthesize: can't find ';'");
|
|
SourceLocation onePastSemiLoc =
|
|
startLoc.getFileLocWithOffset(semiBuf-startBuf+1);
|
|
|
|
if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
|
|
return; // FIXME: is this correct?
|
|
|
|
// Generate the 'getter' function.
|
|
ObjCPropertyDecl *PD = PID->getPropertyDecl();
|
|
ObjCInterfaceDecl *ClassDecl = PD->getGetterMethodDecl()->getClassInterface();
|
|
ObjCIvarDecl *OID = PID->getPropertyIvarDecl();
|
|
|
|
if (!OID)
|
|
return;
|
|
|
|
std::string Getr;
|
|
RewriteObjCMethodDecl(PD->getGetterMethodDecl(), Getr);
|
|
Getr += "{ ";
|
|
// Synthesize an explicit cast to gain access to the ivar.
|
|
// FIXME: deal with code generation implications for various property
|
|
// attributes (copy, retain, nonatomic).
|
|
// See objc-act.c:objc_synthesize_new_getter() for details.
|
|
Getr += "return " + getIvarAccessString(ClassDecl, OID);
|
|
Getr += "; }";
|
|
InsertText(onePastSemiLoc, Getr.c_str(), Getr.size());
|
|
|
|
// Add the rewritten getter to trigger meta data generation. An alternate, and
|
|
// possibly cleaner approach is to hack RewriteObjCMethodsMetaData() to deal
|
|
// with properties explicitly. The following addInstanceMethod() required far
|
|
// less code change (and actually models what the rewriter is doing).
|
|
if (IMD)
|
|
IMD->addInstanceMethod(PD->getGetterMethodDecl());
|
|
else
|
|
CID->addInstanceMethod(PD->getGetterMethodDecl());
|
|
|
|
if (PD->isReadOnly())
|
|
return;
|
|
|
|
// Generate the 'setter' function.
|
|
std::string Setr;
|
|
RewriteObjCMethodDecl(PD->getSetterMethodDecl(), Setr);
|
|
Setr += "{ ";
|
|
// Synthesize an explicit cast to initialize the ivar.
|
|
// FIXME: deal with code generation implications for various property
|
|
// attributes (copy, retain, nonatomic).
|
|
// See objc-act.c:objc_synthesize_new_setter() for details.
|
|
Setr += getIvarAccessString(ClassDecl, OID) + " = ";
|
|
Setr += PD->getNameAsCString();
|
|
Setr += "; }";
|
|
InsertText(onePastSemiLoc, Setr.c_str(), Setr.size());
|
|
|
|
// Add the rewritten setter to trigger meta data generation.
|
|
if (IMD)
|
|
IMD->addInstanceMethod(PD->getSetterMethodDecl());
|
|
else
|
|
CID->addInstanceMethod(PD->getSetterMethodDecl());
|
|
}
|
|
|
|
void RewriteObjC::RewriteForwardClassDecl(ObjCClassDecl *ClassDecl) {
|
|
int numDecls = ClassDecl->getNumForwardDecls();
|
|
ObjCInterfaceDecl **ForwardDecls = ClassDecl->getForwardDecls();
|
|
|
|
// Get the start location and compute the semi location.
|
|
SourceLocation startLoc = ClassDecl->getLocation();
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
const char *semiPtr = strchr(startBuf, ';');
|
|
|
|
// 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.
|
|
std::string typedefString;
|
|
typedefString += "// ";
|
|
typedefString.append(startBuf, semiPtr-startBuf+1);
|
|
typedefString += "\n";
|
|
for (int i = 0; i < numDecls; i++) {
|
|
ObjCInterfaceDecl *ForwardDecl = ForwardDecls[i];
|
|
typedefString += "#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();
|
|
typedefString += ";\n#endif\n";
|
|
}
|
|
|
|
// Replace the @class with typedefs corresponding to the classes.
|
|
ReplaceText(startLoc, semiPtr-startBuf+1,
|
|
typedefString.c_str(), typedefString.size());
|
|
}
|
|
|
|
void RewriteObjC::RewriteMethodDeclaration(ObjCMethodDecl *Method) {
|
|
SourceLocation LocStart = Method->getLocStart();
|
|
SourceLocation LocEnd = Method->getLocEnd();
|
|
|
|
if (SM->getInstantiationLineNumber(LocEnd) >
|
|
SM->getInstantiationLineNumber(LocStart)) {
|
|
InsertText(LocStart, "#if 0\n", 6);
|
|
ReplaceText(LocEnd, 1, ";\n#endif\n", 9);
|
|
} else {
|
|
InsertText(LocStart, "// ", 3);
|
|
}
|
|
}
|
|
|
|
void RewriteObjC::RewriteProperty(ObjCPropertyDecl *prop)
|
|
{
|
|
SourceLocation Loc = prop->getLocation();
|
|
|
|
ReplaceText(Loc, 0, "// ", 3);
|
|
|
|
// FIXME: handle properties that are declared across multiple lines.
|
|
}
|
|
|
|
void RewriteObjC::RewriteCategoryDecl(ObjCCategoryDecl *CatDecl) {
|
|
SourceLocation LocStart = CatDecl->getLocStart();
|
|
|
|
// FIXME: handle category headers that are declared across multiple lines.
|
|
ReplaceText(LocStart, 0, "// ", 3);
|
|
|
|
for (ObjCCategoryDecl::instmeth_iterator I = CatDecl->instmeth_begin(),
|
|
E = CatDecl->instmeth_end(); I != E; ++I)
|
|
RewriteMethodDeclaration(*I);
|
|
for (ObjCCategoryDecl::classmeth_iterator I = CatDecl->classmeth_begin(),
|
|
E = CatDecl->classmeth_end(); I != E; ++I)
|
|
RewriteMethodDeclaration(*I);
|
|
|
|
// Lastly, comment out the @end.
|
|
ReplaceText(CatDecl->getAtEndLoc(), 0, "// ", 3);
|
|
}
|
|
|
|
void RewriteObjC::RewriteProtocolDecl(ObjCProtocolDecl *PDecl) {
|
|
std::pair<const char*, const char*> MainBuf = SM->getBufferData(MainFileID);
|
|
|
|
SourceLocation LocStart = PDecl->getLocStart();
|
|
|
|
// FIXME: handle protocol headers that are declared across multiple lines.
|
|
ReplaceText(LocStart, 0, "// ", 3);
|
|
|
|
for (ObjCProtocolDecl::instmeth_iterator I = PDecl->instmeth_begin(),
|
|
E = PDecl->instmeth_end(); I != E; ++I)
|
|
RewriteMethodDeclaration(*I);
|
|
for (ObjCProtocolDecl::classmeth_iterator I = PDecl->classmeth_begin(),
|
|
E = PDecl->classmeth_end(); I != E; ++I)
|
|
RewriteMethodDeclaration(*I);
|
|
|
|
// Lastly, comment out the @end.
|
|
SourceLocation LocEnd = PDecl->getAtEndLoc();
|
|
ReplaceText(LocEnd, 0, "// ", 3);
|
|
|
|
// 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"))) {
|
|
std::string CommentedOptional = "/* @optional */";
|
|
SourceLocation OptionalLoc = LocStart.getFileLocWithOffset(p-startBuf);
|
|
ReplaceText(OptionalLoc, strlen("@optional"),
|
|
CommentedOptional.c_str(), CommentedOptional.size());
|
|
|
|
}
|
|
else if (*p == '@' && !strncmp(p+1, "required", strlen("required"))) {
|
|
std::string CommentedRequired = "/* @required */";
|
|
SourceLocation OptionalLoc = LocStart.getFileLocWithOffset(p-startBuf);
|
|
ReplaceText(OptionalLoc, strlen("@required"),
|
|
CommentedRequired.c_str(), CommentedRequired.size());
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
void RewriteObjC::RewriteForwardProtocolDecl(ObjCForwardProtocolDecl *PDecl) {
|
|
SourceLocation LocStart = PDecl->getLocation();
|
|
if (LocStart.isInvalid())
|
|
assert(false && "Invalid SourceLocation");
|
|
// FIXME: handle forward protocol that are declared across multiple lines.
|
|
ReplaceText(LocStart, 0, "// ", 3);
|
|
}
|
|
|
|
void RewriteObjC::RewriteObjCMethodDecl(ObjCMethodDecl *OMD,
|
|
std::string &ResultStr) {
|
|
//fprintf(stderr,"In RewriteObjCMethodDecl\n");
|
|
const FunctionType *FPRetType = 0;
|
|
ResultStr += "\nstatic ";
|
|
if (OMD->getResultType()->isObjCQualifiedIdType())
|
|
ResultStr += "id";
|
|
else if (OMD->getResultType()->isFunctionPointerType() ||
|
|
OMD->getResultType()->isBlockPointerType()) {
|
|
// needs special handling, since pointer-to-functions have special
|
|
// syntax (where a decaration models use).
|
|
QualType retType = OMD->getResultType();
|
|
QualType PointeeTy;
|
|
if (const PointerType* PT = retType->getAsPointerType())
|
|
PointeeTy = PT->getPointeeType();
|
|
else if (const BlockPointerType *BPT = retType->getAsBlockPointerType())
|
|
PointeeTy = BPT->getPointeeType();
|
|
if ((FPRetType = PointeeTy->getAsFunctionType())) {
|
|
ResultStr += FPRetType->getResultType().getAsString();
|
|
ResultStr += "(*";
|
|
}
|
|
} else
|
|
ResultStr += OMD->getResultType().getAsString();
|
|
ResultStr += " ";
|
|
|
|
// Unique method name
|
|
std::string NameStr;
|
|
|
|
if (OMD->isInstanceMethod())
|
|
NameStr += "_I_";
|
|
else
|
|
NameStr += "_C_";
|
|
|
|
NameStr += OMD->getClassInterface()->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(OMD->getClassInterface());
|
|
selfTy = Context->getPointerType(selfTy);
|
|
if (!LangOpts.Microsoft) {
|
|
if (ObjCSynthesizedStructs.count(OMD->getClassInterface()))
|
|
ResultStr += "struct ";
|
|
}
|
|
// When rewriting for Microsoft, explicitly omit the structure name.
|
|
ResultStr += OMD->getClassInterface()->getNameAsString();
|
|
ResultStr += " *";
|
|
}
|
|
else
|
|
ResultStr += Context->getObjCIdType().getAsString();
|
|
|
|
ResultStr += " self, ";
|
|
ResultStr += Context->getObjCSelType().getAsString();
|
|
ResultStr += " _cmd";
|
|
|
|
// Method arguments.
|
|
for (unsigned i = 0; i < OMD->getNumParams(); i++) {
|
|
ParmVarDecl *PDecl = OMD->getParamDecl(i);
|
|
ResultStr += ", ";
|
|
if (PDecl->getType()->isObjCQualifiedIdType()) {
|
|
ResultStr += "id ";
|
|
ResultStr += PDecl->getNameAsString();
|
|
} else {
|
|
std::string Name = PDecl->getNameAsString();
|
|
if (isTopLevelBlockPointerType(PDecl->getType())) {
|
|
// Make sure we convert "t (^)(...)" to "t (*)(...)".
|
|
const BlockPointerType *BPT = PDecl->getType()->getAsBlockPointerType();
|
|
Context->getPointerType(BPT->getPointeeType()).getAsStringInternal(Name);
|
|
} else
|
|
PDecl->getType().getAsStringInternal(Name);
|
|
ResultStr += Name;
|
|
}
|
|
}
|
|
if (OMD->isVariadic())
|
|
ResultStr += ", ...";
|
|
ResultStr += ") ";
|
|
|
|
if (FPRetType) {
|
|
ResultStr += ")"; // close the precedence "scope" for "*".
|
|
|
|
// Now, emit the argument types (if any).
|
|
if (const FunctionTypeProto *FT = dyn_cast<FunctionTypeProto>(FPRetType)) {
|
|
ResultStr += "(";
|
|
for (unsigned i = 0, e = FT->getNumArgs(); i != e; ++i) {
|
|
if (i) ResultStr += ", ";
|
|
std::string ParamStr = FT->getArgType(i).getAsString();
|
|
ResultStr += ParamStr;
|
|
}
|
|
if (FT->isVariadic()) {
|
|
if (FT->getNumArgs()) ResultStr += ", ";
|
|
ResultStr += "...";
|
|
}
|
|
ResultStr += ")";
|
|
} else {
|
|
ResultStr += "()";
|
|
}
|
|
}
|
|
}
|
|
void RewriteObjC::RewriteImplementationDecl(Decl *OID) {
|
|
ObjCImplementationDecl *IMD = dyn_cast<ObjCImplementationDecl>(OID);
|
|
ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(OID);
|
|
|
|
if (IMD)
|
|
InsertText(IMD->getLocStart(), "// ", 3);
|
|
else
|
|
InsertText(CID->getLocStart(), "// ", 3);
|
|
|
|
for (ObjCCategoryImplDecl::instmeth_iterator
|
|
I = IMD ? IMD->instmeth_begin() : CID->instmeth_begin(),
|
|
E = IMD ? IMD->instmeth_end() : CID->instmeth_end(); I != E; ++I) {
|
|
std::string ResultStr;
|
|
ObjCMethodDecl *OMD = *I;
|
|
RewriteObjCMethodDecl(OMD, ResultStr);
|
|
SourceLocation LocStart = OMD->getLocStart();
|
|
SourceLocation LocEnd = OMD->getBody()->getLocStart();
|
|
|
|
const char *startBuf = SM->getCharacterData(LocStart);
|
|
const char *endBuf = SM->getCharacterData(LocEnd);
|
|
ReplaceText(LocStart, endBuf-startBuf,
|
|
ResultStr.c_str(), ResultStr.size());
|
|
}
|
|
|
|
for (ObjCCategoryImplDecl::classmeth_iterator
|
|
I = IMD ? IMD->classmeth_begin() : CID->classmeth_begin(),
|
|
E = IMD ? IMD->classmeth_end() : CID->classmeth_end(); I != E; ++I) {
|
|
std::string ResultStr;
|
|
ObjCMethodDecl *OMD = *I;
|
|
RewriteObjCMethodDecl(OMD, ResultStr);
|
|
SourceLocation LocStart = OMD->getLocStart();
|
|
SourceLocation LocEnd = OMD->getBody()->getLocStart();
|
|
|
|
const char *startBuf = SM->getCharacterData(LocStart);
|
|
const char *endBuf = SM->getCharacterData(LocEnd);
|
|
ReplaceText(LocStart, endBuf-startBuf,
|
|
ResultStr.c_str(), ResultStr.size());
|
|
}
|
|
for (ObjCCategoryImplDecl::propimpl_iterator
|
|
I = IMD ? IMD->propimpl_begin() : CID->propimpl_begin(),
|
|
E = IMD ? IMD->propimpl_end() : CID->propimpl_end(); I != E; ++I) {
|
|
RewritePropertyImplDecl(*I, IMD, CID);
|
|
}
|
|
|
|
if (IMD)
|
|
InsertText(IMD->getLocEnd(), "// ", 3);
|
|
else
|
|
InsertText(CID->getLocEnd(), "// ", 3);
|
|
}
|
|
|
|
void RewriteObjC::RewriteInterfaceDecl(ObjCInterfaceDecl *ClassDecl) {
|
|
std::string ResultStr;
|
|
if (!ObjCForwardDecls.count(ClassDecl)) {
|
|
// we haven't seen a forward decl - generate a typedef.
|
|
ResultStr = "#ifndef _REWRITER_typedef_";
|
|
ResultStr += ClassDecl->getNameAsString();
|
|
ResultStr += "\n";
|
|
ResultStr += "#define _REWRITER_typedef_";
|
|
ResultStr += ClassDecl->getNameAsString();
|
|
ResultStr += "\n";
|
|
ResultStr += "typedef struct objc_object ";
|
|
ResultStr += ClassDecl->getNameAsString();
|
|
ResultStr += ";\n#endif\n";
|
|
// Mark this typedef as having been generated.
|
|
ObjCForwardDecls.insert(ClassDecl);
|
|
}
|
|
SynthesizeObjCInternalStruct(ClassDecl, ResultStr);
|
|
|
|
for (ObjCInterfaceDecl::prop_iterator I = ClassDecl->prop_begin(),
|
|
E = ClassDecl->prop_end(); I != E; ++I)
|
|
RewriteProperty(*I);
|
|
for (ObjCInterfaceDecl::instmeth_iterator I = ClassDecl->instmeth_begin(),
|
|
E = ClassDecl->instmeth_end(); I != E; ++I)
|
|
RewriteMethodDeclaration(*I);
|
|
for (ObjCInterfaceDecl::classmeth_iterator I = ClassDecl->classmeth_begin(),
|
|
E = ClassDecl->classmeth_end(); I != E; ++I)
|
|
RewriteMethodDeclaration(*I);
|
|
|
|
// Lastly, comment out the @end.
|
|
ReplaceText(ClassDecl->getAtEndLoc(), 0, "// ", 3);
|
|
}
|
|
|
|
Stmt *RewriteObjC::RewritePropertySetter(BinaryOperator *BinOp, Expr *newStmt,
|
|
SourceRange SrcRange) {
|
|
// Synthesize a ObjCMessageExpr from a ObjCPropertyRefExpr.
|
|
// This allows us to reuse all the fun and games in SynthMessageExpr().
|
|
ObjCPropertyRefExpr *PropRefExpr = dyn_cast<ObjCPropertyRefExpr>(BinOp->getLHS());
|
|
ObjCMessageExpr *MsgExpr;
|
|
ObjCPropertyDecl *PDecl = PropRefExpr->getProperty();
|
|
llvm::SmallVector<Expr *, 1> ExprVec;
|
|
ExprVec.push_back(newStmt);
|
|
|
|
Stmt *Receiver = PropRefExpr->getBase();
|
|
ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(Receiver);
|
|
if (PRE && PropGetters[PRE]) {
|
|
// This allows us to handle chain/nested property getters.
|
|
Receiver = PropGetters[PRE];
|
|
}
|
|
MsgExpr = new (Context) ObjCMessageExpr(dyn_cast<Expr>(Receiver),
|
|
PDecl->getSetterName(), PDecl->getType(),
|
|
PDecl->getSetterMethodDecl(),
|
|
SourceLocation(), SourceLocation(),
|
|
&ExprVec[0], 1);
|
|
Stmt *ReplacingStmt = SynthMessageExpr(MsgExpr);
|
|
|
|
// Now do the actual rewrite.
|
|
ReplaceStmtWithRange(BinOp, ReplacingStmt, SrcRange);
|
|
//delete BinOp;
|
|
// NOTE: We don't want to call MsgExpr->Destroy(), as it holds references
|
|
// to things that stay around.
|
|
Context->Deallocate(MsgExpr);
|
|
return ReplacingStmt;
|
|
}
|
|
|
|
Stmt *RewriteObjC::RewritePropertyGetter(ObjCPropertyRefExpr *PropRefExpr) {
|
|
// Synthesize a ObjCMessageExpr from a ObjCPropertyRefExpr.
|
|
// This allows us to reuse all the fun and games in SynthMessageExpr().
|
|
ObjCMessageExpr *MsgExpr;
|
|
ObjCPropertyDecl *PDecl = PropRefExpr->getProperty();
|
|
|
|
Stmt *Receiver = PropRefExpr->getBase();
|
|
|
|
ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(Receiver);
|
|
if (PRE && PropGetters[PRE]) {
|
|
// This allows us to handle chain/nested property getters.
|
|
Receiver = PropGetters[PRE];
|
|
}
|
|
MsgExpr = new (Context) ObjCMessageExpr(dyn_cast<Expr>(Receiver),
|
|
PDecl->getGetterName(), PDecl->getType(),
|
|
PDecl->getGetterMethodDecl(),
|
|
SourceLocation(), SourceLocation(),
|
|
0, 0);
|
|
|
|
Stmt *ReplacingStmt = SynthMessageExpr(MsgExpr);
|
|
|
|
if (!PropParentMap)
|
|
PropParentMap = new ParentMap(CurrentBody);
|
|
|
|
Stmt *Parent = PropParentMap->getParent(PropRefExpr);
|
|
if (Parent && isa<ObjCPropertyRefExpr>(Parent)) {
|
|
// We stash away the ReplacingStmt since actually doing the
|
|
// replacement/rewrite won't work for nested getters (e.g. obj.p.i)
|
|
PropGetters[PropRefExpr] = ReplacingStmt;
|
|
// NOTE: We don't want to call MsgExpr->Destroy(), as it holds references
|
|
// to things that stay around.
|
|
Context->Deallocate(MsgExpr);
|
|
return PropRefExpr; // return the original...
|
|
} else {
|
|
ReplaceStmt(PropRefExpr, ReplacingStmt);
|
|
// delete PropRefExpr; elsewhere...
|
|
// NOTE: We don't want to call MsgExpr->Destroy(), as it holds references
|
|
// to things that stay around.
|
|
Context->Deallocate(MsgExpr);
|
|
return ReplacingStmt;
|
|
}
|
|
}
|
|
|
|
Stmt *RewriteObjC::RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV,
|
|
SourceLocation OrigStart) {
|
|
ObjCIvarDecl *D = IV->getDecl();
|
|
if (CurMethodDef) {
|
|
if (const PointerType *pType = IV->getBase()->getType()->getAsPointerType()) {
|
|
ObjCInterfaceType *iFaceDecl =
|
|
dyn_cast<ObjCInterfaceType>(pType->getPointeeType());
|
|
// lookup which class implements the instance variable.
|
|
ObjCInterfaceDecl *clsDeclared = 0;
|
|
iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(), clsDeclared);
|
|
assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class");
|
|
|
|
// Synthesize an explicit cast to gain access to the ivar.
|
|
std::string RecName = clsDeclared->getIdentifier()->getName();
|
|
RecName += "_IMPL";
|
|
IdentifierInfo *II = &Context->Idents.get(RecName.c_str());
|
|
RecordDecl *RD = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
|
|
SourceLocation(), II);
|
|
assert(RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl");
|
|
QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
|
|
CastExpr *castExpr = new (Context) CStyleCastExpr(castT, IV->getBase(),
|
|
castT,SourceLocation(),
|
|
SourceLocation());
|
|
// Don't forget the parens to enforce the proper binding.
|
|
ParenExpr *PE = new (Context) ParenExpr(IV->getBase()->getLocStart(),
|
|
IV->getBase()->getLocEnd(),
|
|
castExpr);
|
|
if (IV->isFreeIvar() &&
|
|
CurMethodDef->getClassInterface() == iFaceDecl->getDecl()) {
|
|
MemberExpr *ME = new (Context) MemberExpr(PE, true, D,
|
|
IV->getLocation(),
|
|
D->getType());
|
|
ReplaceStmt(IV, ME);
|
|
// delete IV; leak for now, see RewritePropertySetter() usage for more info.
|
|
return ME;
|
|
}
|
|
|
|
ReplaceStmt(IV->getBase(), PE);
|
|
// Cannot delete IV->getBase(), since PE points to it.
|
|
// Replace the old base with the cast. This is important when doing
|
|
// embedded rewrites. For example, [newInv->_container addObject:0].
|
|
IV->setBase(PE);
|
|
return IV;
|
|
}
|
|
} else { // we are outside a method.
|
|
assert(!IV->isFreeIvar() && "Cannot have a free standing ivar outside a method");
|
|
|
|
// Explicit ivar refs need to have a cast inserted.
|
|
// FIXME: consider sharing some of this code with the code above.
|
|
if (const PointerType *pType = IV->getBase()->getType()->getAsPointerType()) {
|
|
ObjCInterfaceType *iFaceDecl = dyn_cast<ObjCInterfaceType>(pType->getPointeeType());
|
|
// lookup which class implements the instance variable.
|
|
ObjCInterfaceDecl *clsDeclared = 0;
|
|
iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(), clsDeclared);
|
|
assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class");
|
|
|
|
// Synthesize an explicit cast to gain access to the ivar.
|
|
std::string RecName = clsDeclared->getIdentifier()->getName();
|
|
RecName += "_IMPL";
|
|
IdentifierInfo *II = &Context->Idents.get(RecName.c_str());
|
|
RecordDecl *RD = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
|
|
SourceLocation(), II);
|
|
assert(RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl");
|
|
QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
|
|
CastExpr *castExpr = new (Context) CStyleCastExpr(castT, IV->getBase(),
|
|
castT, SourceLocation(),
|
|
SourceLocation());
|
|
// Don't forget the parens to enforce the proper binding.
|
|
ParenExpr *PE = new (Context) ParenExpr(IV->getBase()->getLocStart(),
|
|
IV->getBase()->getLocEnd(), castExpr);
|
|
ReplaceStmt(IV->getBase(), PE);
|
|
// Cannot delete IV->getBase(), since PE points to it.
|
|
// Replace the old base with the cast. This is important when doing
|
|
// embedded rewrites. For example, [newInv->_container addObject:0].
|
|
IV->setBase(PE);
|
|
return IV;
|
|
}
|
|
}
|
|
return IV;
|
|
}
|
|
|
|
/// SynthCountByEnumWithState - To print:
|
|
/// ((unsigned int (*)
|
|
/// (id, SEL, struct __objcFastEnumerationState *, id *, unsigned int))
|
|
/// (void *)objc_msgSend)((id)l_collection,
|
|
/// sel_registerName(
|
|
/// "countByEnumeratingWithState:objects:count:"),
|
|
/// &enumState,
|
|
/// (id *)items, (unsigned int)16)
|
|
///
|
|
void RewriteObjC::SynthCountByEnumWithState(std::string &buf) {
|
|
buf += "((unsigned int (*) (id, SEL, struct __objcFastEnumerationState *, "
|
|
"id *, unsigned int))(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 *)items, (unsigned int)16)";
|
|
}
|
|
|
|
/// RewriteBreakStmt - Rewrite for a break-stmt inside an ObjC2's foreach
|
|
/// statement to exit to its outer synthesized loop.
|
|
///
|
|
Stmt *RewriteObjC::RewriteBreakStmt(BreakStmt *S) {
|
|
if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
|
|
return S;
|
|
// replace break with goto __break_label
|
|
std::string buf;
|
|
|
|
SourceLocation startLoc = S->getLocStart();
|
|
buf = "goto __break_label_";
|
|
buf += utostr(ObjCBcLabelNo.back());
|
|
ReplaceText(startLoc, strlen("break"), buf.c_str(), buf.size());
|
|
|
|
return 0;
|
|
}
|
|
|
|
/// RewriteContinueStmt - Rewrite for a continue-stmt inside an ObjC2's foreach
|
|
/// statement to continue with its inner synthesized loop.
|
|
///
|
|
Stmt *RewriteObjC::RewriteContinueStmt(ContinueStmt *S) {
|
|
if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
|
|
return S;
|
|
// replace continue with goto __continue_label
|
|
std::string buf;
|
|
|
|
SourceLocation startLoc = S->getLocStart();
|
|
buf = "goto __continue_label_";
|
|
buf += utostr(ObjCBcLabelNo.back());
|
|
ReplaceText(startLoc, strlen("continue"), buf.c_str(), buf.size());
|
|
|
|
return 0;
|
|
}
|
|
|
|
/// RewriteObjCForCollectionStmt - Rewriter for ObjC2's foreach statement.
|
|
/// It rewrites:
|
|
/// for ( type elem in collection) { stmts; }
|
|
|
|
/// Into:
|
|
/// {
|
|
/// type elem;
|
|
/// struct __objcFastEnumerationState enumState = { 0 };
|
|
/// id items[16];
|
|
/// id l_collection = (id)collection;
|
|
/// unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
|
|
/// objects: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:items count:16]);
|
|
/// elem = nil;
|
|
/// __break_label: ;
|
|
/// }
|
|
/// else
|
|
/// elem = nil;
|
|
/// }
|
|
///
|
|
Stmt *RewriteObjC::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->getLocStart();
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
const char *elementName;
|
|
std::string elementTypeAsString;
|
|
std::string buf;
|
|
buf = "\n{\n\t";
|
|
if (DeclStmt *DS = dyn_cast<DeclStmt>(S->getElement())) {
|
|
// type elem;
|
|
NamedDecl* D = cast<NamedDecl>(DS->getSolitaryDecl());
|
|
QualType ElementType = cast<ValueDecl>(D)->getType();
|
|
elementTypeAsString = ElementType.getAsString();
|
|
buf += elementTypeAsString;
|
|
buf += " ";
|
|
elementName = D->getNameAsCString();
|
|
buf += elementName;
|
|
buf += ";\n\t";
|
|
}
|
|
else {
|
|
DeclRefExpr *DR = cast<DeclRefExpr>(S->getElement());
|
|
elementName = DR->getDecl()->getNameAsCString();
|
|
elementTypeAsString
|
|
= cast<ValueDecl>(DR->getDecl())->getType().getAsString();
|
|
}
|
|
|
|
// struct __objcFastEnumerationState enumState = { 0 };
|
|
buf += "struct __objcFastEnumerationState enumState = { 0 };\n\t";
|
|
// id items[16];
|
|
buf += "id 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.c_str(), buf.size());
|
|
// Replace ')' in for '(' type elem in collection ')' with ';'
|
|
SourceLocation rightParenLoc = S->getRParenLoc();
|
|
const char *rparenBuf = SM->getCharacterData(rightParenLoc);
|
|
SourceLocation lparenLoc = startLoc.getFileLocWithOffset(rparenBuf-startBuf);
|
|
buf = ";\n\t";
|
|
|
|
// unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
|
|
// objects:items count:16];
|
|
// which is synthesized into:
|
|
// unsigned int limit =
|
|
// ((unsigned int (*)
|
|
// (id, SEL, struct __objcFastEnumerationState *, id *, unsigned int))
|
|
// (void *)objc_msgSend)((id)l_collection,
|
|
// sel_registerName(
|
|
// "countByEnumeratingWithState:objects:count:"),
|
|
// (struct __objcFastEnumerationState *)&state,
|
|
// (id *)items, (unsigned int)16);
|
|
buf += "unsigned long 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.c_str(), buf.size());
|
|
|
|
/// __continue_label: ;
|
|
/// } while (counter < limit);
|
|
/// } while (limit = [l_collection countByEnumeratingWithState:&enumState
|
|
/// objects: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 += " = ((id)0);\n\t";
|
|
buf += "__break_label_";
|
|
buf += utostr(ObjCBcLabelNo.back());
|
|
buf += ": ;\n\t";
|
|
buf += "}\n\t";
|
|
buf += "else\n\t\t";
|
|
buf += elementName;
|
|
buf += " = ((id)0);\n";
|
|
buf += "}\n";
|
|
|
|
// Insert all these *after* the statement body.
|
|
if (isa<CompoundStmt>(S->getBody())) {
|
|
SourceLocation endBodyLoc = OrigEnd.getFileLocWithOffset(1);
|
|
InsertText(endBodyLoc, buf.c_str(), buf.size());
|
|
} 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.getFileLocWithOffset(semiBuf-stmtBuf+1);
|
|
InsertText(endBodyLoc, buf.c_str(), buf.size());
|
|
}
|
|
Stmts.pop_back();
|
|
ObjCBcLabelNo.pop_back();
|
|
return 0;
|
|
}
|
|
|
|
/// RewriteObjCSynchronizedStmt -
|
|
/// This routine rewrites @synchronized(expr) stmt;
|
|
/// into:
|
|
/// objc_sync_enter(expr);
|
|
/// @try stmt @finally { objc_sync_exit(expr); }
|
|
///
|
|
Stmt *RewriteObjC::RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
|
|
// Get the start location and compute the semi location.
|
|
SourceLocation startLoc = S->getLocStart();
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
|
|
assert((*startBuf == '@') && "bogus @synchronized location");
|
|
|
|
std::string buf;
|
|
buf = "objc_sync_enter((id)";
|
|
const char *lparenBuf = startBuf;
|
|
while (*lparenBuf != '(') lparenBuf++;
|
|
ReplaceText(startLoc, lparenBuf-startBuf+1, buf.c_str(), buf.size());
|
|
// We can't use S->getSynchExpr()->getLocEnd() 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 endLoc = S->getSynchBody()->getLocStart();
|
|
const char *endBuf = SM->getCharacterData(endLoc);
|
|
while (*endBuf != ')') endBuf--;
|
|
SourceLocation rparenLoc = startLoc.getFileLocWithOffset(endBuf-startBuf);
|
|
buf = ");\n";
|
|
// declare a new scope with two variables, _stack and _rethrow.
|
|
buf += "/* @try scope begin */ \n{ struct _objc_exception_data {\n";
|
|
buf += "int buf[18/*32-bit i386*/];\n";
|
|
buf += "char *pointers[4];} _stack;\n";
|
|
buf += "id volatile _rethrow = 0;\n";
|
|
buf += "objc_exception_try_enter(&_stack);\n";
|
|
buf += "if (!_setjmp(_stack.buf)) /* @try block continue */\n";
|
|
ReplaceText(rparenLoc, 1, buf.c_str(), buf.size());
|
|
startLoc = S->getSynchBody()->getLocEnd();
|
|
startBuf = SM->getCharacterData(startLoc);
|
|
|
|
assert((*startBuf == '}') && "bogus @synchronized block");
|
|
SourceLocation lastCurlyLoc = startLoc;
|
|
buf = "}\nelse {\n";
|
|
buf += " _rethrow = objc_exception_extract(&_stack);\n";
|
|
buf += " if (!_rethrow) objc_exception_try_exit(&_stack);\n";
|
|
buf += " objc_sync_exit(";
|
|
Expr *syncExpr = new (Context) CStyleCastExpr(Context->getObjCIdType(),
|
|
S->getSynchExpr(),
|
|
Context->getObjCIdType(),
|
|
SourceLocation(),
|
|
SourceLocation());
|
|
std::string syncExprBufS;
|
|
llvm::raw_string_ostream syncExprBuf(syncExprBufS);
|
|
syncExpr->printPretty(syncExprBuf);
|
|
buf += syncExprBuf.str();
|
|
buf += ");\n";
|
|
buf += " if (_rethrow) objc_exception_throw(_rethrow);\n";
|
|
buf += "}\n";
|
|
buf += "}";
|
|
|
|
ReplaceText(lastCurlyLoc, 1, buf.c_str(), buf.size());
|
|
return 0;
|
|
}
|
|
|
|
void RewriteObjC::WarnAboutReturnGotoContinueOrBreakStmts(Stmt *S) {
|
|
// Perform a bottom up traversal of all children.
|
|
for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
|
|
CI != E; ++CI)
|
|
if (*CI)
|
|
WarnAboutReturnGotoContinueOrBreakStmts(*CI);
|
|
|
|
if (isa<ReturnStmt>(S) || isa<ContinueStmt>(S) ||
|
|
isa<BreakStmt>(S) || isa<GotoStmt>(S)) {
|
|
Diags.Report(Context->getFullLoc(S->getLocStart()),
|
|
TryFinallyContainsReturnDiag);
|
|
}
|
|
return;
|
|
}
|
|
|
|
Stmt *RewriteObjC::RewriteObjCTryStmt(ObjCAtTryStmt *S) {
|
|
// Get the start location and compute the semi location.
|
|
SourceLocation startLoc = S->getLocStart();
|
|
const char *startBuf = SM->getCharacterData(startLoc);
|
|
|
|
assert((*startBuf == '@') && "bogus @try location");
|
|
|
|
std::string buf;
|
|
// declare a new scope with two variables, _stack and _rethrow.
|
|
buf = "/* @try scope begin */ { struct _objc_exception_data {\n";
|
|
buf += "int buf[18/*32-bit i386*/];\n";
|
|
buf += "char *pointers[4];} _stack;\n";
|
|
buf += "id volatile _rethrow = 0;\n";
|
|
buf += "objc_exception_try_enter(&_stack);\n";
|
|
buf += "if (!_setjmp(_stack.buf)) /* @try block continue */\n";
|
|
|
|
ReplaceText(startLoc, 4, buf.c_str(), buf.size());
|
|
|
|
startLoc = S->getTryBody()->getLocEnd();
|
|
startBuf = SM->getCharacterData(startLoc);
|
|
|
|
assert((*startBuf == '}') && "bogus @try block");
|
|
|
|
SourceLocation lastCurlyLoc = startLoc;
|
|
ObjCAtCatchStmt *catchList = S->getCatchStmts();
|
|
if (catchList) {
|
|
startLoc = startLoc.getFileLocWithOffset(1);
|
|
buf = " /* @catch begin */ else {\n";
|
|
buf += " id _caught = objc_exception_extract(&_stack);\n";
|
|
buf += " objc_exception_try_enter (&_stack);\n";
|
|
buf += " if (_setjmp(_stack.buf))\n";
|
|
buf += " _rethrow = objc_exception_extract(&_stack);\n";
|
|
buf += " else { /* @catch continue */";
|
|
|
|
InsertText(startLoc, buf.c_str(), buf.size());
|
|
} else { /* no catch list */
|
|
buf = "}\nelse {\n";
|
|
buf += " _rethrow = objc_exception_extract(&_stack);\n";
|
|
buf += "}";
|
|
ReplaceText(lastCurlyLoc, 1, buf.c_str(), buf.size());
|
|
}
|
|
bool sawIdTypedCatch = false;
|
|
Stmt *lastCatchBody = 0;
|
|
while (catchList) {
|
|
Stmt *catchStmt = catchList->getCatchParamStmt();
|
|
|
|
if (catchList == S->getCatchStmts())
|
|
buf = "if ("; // we are generating code for the first catch clause
|
|
else
|
|
buf = "else if (";
|
|
startLoc = catchList->getLocStart();
|
|
startBuf = SM->getCharacterData(startLoc);
|
|
|
|
assert((*startBuf == '@') && "bogus @catch location");
|
|
|
|
const char *lParenLoc = strchr(startBuf, '(');
|
|
|
|
if (catchList->hasEllipsis()) {
|
|
// Now rewrite the body...
|
|
lastCatchBody = catchList->getCatchBody();
|
|
SourceLocation bodyLoc = lastCatchBody->getLocStart();
|
|
const char *bodyBuf = SM->getCharacterData(bodyLoc);
|
|
assert(*SM->getCharacterData(catchList->getRParenLoc()) == ')' &&
|
|
"bogus @catch paren location");
|
|
assert((*bodyBuf == '{') && "bogus @catch body location");
|
|
|
|
buf += "1) { id _tmp = _caught;";
|
|
Rewrite.ReplaceText(startLoc, bodyBuf-startBuf+1,
|
|
buf.c_str(), buf.size());
|
|
} else if (DeclStmt *declStmt = dyn_cast<DeclStmt>(catchStmt)) {
|
|
QualType t = dyn_cast<ValueDecl>(declStmt->getSolitaryDecl())->getType();
|
|
if (t == Context->getObjCIdType()) {
|
|
buf += "1) { ";
|
|
ReplaceText(startLoc, lParenLoc-startBuf+1, buf.c_str(), buf.size());
|
|
sawIdTypedCatch = true;
|
|
} else if (const PointerType *pType = t->getAsPointerType()) {
|
|
ObjCInterfaceType *cls; // Should be a pointer to a class.
|
|
|
|
cls = dyn_cast<ObjCInterfaceType>(pType->getPointeeType().getTypePtr());
|
|
if (cls) {
|
|
buf += "objc_exception_match((struct objc_class *)objc_getClass(\"";
|
|
buf += cls->getDecl()->getNameAsString();
|
|
buf += "\"), (struct objc_object *)_caught)) { ";
|
|
ReplaceText(startLoc, lParenLoc-startBuf+1, buf.c_str(), buf.size());
|
|
}
|
|
}
|
|
// Now rewrite the body...
|
|
lastCatchBody = catchList->getCatchBody();
|
|
SourceLocation rParenLoc = catchList->getRParenLoc();
|
|
SourceLocation bodyLoc = lastCatchBody->getLocStart();
|
|
const char *bodyBuf = SM->getCharacterData(bodyLoc);
|
|
const char *rParenBuf = SM->getCharacterData(rParenLoc);
|
|
assert((*rParenBuf == ')') && "bogus @catch paren location");
|
|
assert((*bodyBuf == '{') && "bogus @catch body location");
|
|
|
|
buf = " = _caught;";
|
|
// Here we replace ") {" with "= _caught;" (which initializes and
|
|
// declares the @catch parameter).
|
|
ReplaceText(rParenLoc, bodyBuf-rParenBuf+1, buf.c_str(), buf.size());
|
|
} else if (!isa<NullStmt>(catchStmt)) {
|
|
assert(false && "@catch rewrite bug");
|
|
}
|
|
// make sure all the catch bodies get rewritten!
|
|
catchList = catchList->getNextCatchStmt();
|
|
}
|
|
// Complete the catch list...
|
|
if (lastCatchBody) {
|
|
SourceLocation bodyLoc = lastCatchBody->getLocEnd();
|
|
assert(*SM->getCharacterData(bodyLoc) == '}' &&
|
|
"bogus @catch body location");
|
|
|
|
// Insert the last (implicit) else clause *before* the right curly brace.
|
|
bodyLoc = bodyLoc.getFileLocWithOffset(-1);
|
|
buf = "} /* last catch end */\n";
|
|
buf += "else {\n";
|
|
buf += " _rethrow = _caught;\n";
|
|
buf += " objc_exception_try_exit(&_stack);\n";
|
|
buf += "} } /* @catch end */\n";
|
|
if (!S->getFinallyStmt())
|
|
buf += "}\n";
|
|
InsertText(bodyLoc, buf.c_str(), buf.size());
|
|
|
|
// Set lastCurlyLoc
|
|
lastCurlyLoc = lastCatchBody->getLocEnd();
|
|
}
|
|
if (ObjCAtFinallyStmt *finalStmt = S->getFinallyStmt()) {
|
|
startLoc = finalStmt->getLocStart();
|
|
startBuf = SM->getCharacterData(startLoc);
|
|
assert((*startBuf == '@') && "bogus @finally start");
|
|
|
|
buf = "/* @finally */";
|
|
ReplaceText(startLoc, 8, buf.c_str(), buf.size());
|
|
|
|
Stmt *body = finalStmt->getFinallyBody();
|
|
SourceLocation startLoc = body->getLocStart();
|
|
SourceLocation endLoc = body->getLocEnd();
|
|
assert(*SM->getCharacterData(startLoc) == '{' &&
|
|
"bogus @finally body location");
|
|
assert(*SM->getCharacterData(endLoc) == '}' &&
|
|
"bogus @finally body location");
|
|
|
|
startLoc = startLoc.getFileLocWithOffset(1);
|
|
buf = " if (!_rethrow) objc_exception_try_exit(&_stack);\n";
|
|
InsertText(startLoc, buf.c_str(), buf.size());
|
|
endLoc = endLoc.getFileLocWithOffset(-1);
|
|
buf = " if (_rethrow) objc_exception_throw(_rethrow);\n";
|
|
InsertText(endLoc, buf.c_str(), buf.size());
|
|
|
|
// Set lastCurlyLoc
|
|
lastCurlyLoc = body->getLocEnd();
|
|
|
|
// Now check for any return/continue/go statements within the @try.
|
|
WarnAboutReturnGotoContinueOrBreakStmts(S->getTryBody());
|
|
} else { /* no finally clause - make sure we synthesize an implicit one */
|
|
buf = "{ /* implicit finally clause */\n";
|
|
buf += " if (!_rethrow) objc_exception_try_exit(&_stack);\n";
|
|
buf += " if (_rethrow) objc_exception_throw(_rethrow);\n";
|
|
buf += "}";
|
|
ReplaceText(lastCurlyLoc, 1, buf.c_str(), buf.size());
|
|
}
|
|
// Now emit the final closing curly brace...
|
|
lastCurlyLoc = lastCurlyLoc.getFileLocWithOffset(1);
|
|
buf = " } /* @try scope end */\n";
|
|
InsertText(lastCurlyLoc, buf.c_str(), buf.size());
|
|
return 0;
|
|
}
|
|
|
|
Stmt *RewriteObjC::RewriteObjCCatchStmt(ObjCAtCatchStmt *S) {
|
|
return 0;
|
|
}
|
|
|
|
Stmt *RewriteObjC::RewriteObjCFinallyStmt(ObjCAtFinallyStmt *S) {
|
|
return 0;
|
|
}
|
|
|
|
// 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 *RewriteObjC::RewriteObjCThrowStmt(ObjCAtThrowStmt *S) {
|
|
// Get the start location and compute the semi location.
|
|
SourceLocation startLoc = S->getLocStart();
|
|
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 // add an implicit argument
|
|
buf = "objc_exception_throw(_caught";
|
|
|
|
// handle "@ throw" correctly.
|
|
const char *wBuf = strchr(startBuf, 'w');
|
|
assert((*wBuf == 'w') && "@throw: can't find 'w'");
|
|
ReplaceText(startLoc, wBuf-startBuf+1, buf.c_str(), buf.size());
|
|
|
|
const char *semiBuf = strchr(startBuf, ';');
|
|
assert((*semiBuf == ';') && "@throw: can't find ';'");
|
|
SourceLocation semiLoc = startLoc.getFileLocWithOffset(semiBuf-startBuf);
|
|
buf = ");";
|
|
ReplaceText(semiLoc, 1, buf.c_str(), buf.size());
|
|
return 0;
|
|
}
|
|
|
|
Stmt *RewriteObjC::RewriteAtEncode(ObjCEncodeExpr *Exp) {
|
|
// Create a new string expression.
|
|
QualType StrType = Context->getPointerType(Context->CharTy);
|
|
std::string StrEncoding;
|
|
Context->getObjCEncodingForType(Exp->getEncodedType(), StrEncoding);
|
|
Expr *Replacement = new (Context) StringLiteral(*Context,StrEncoding.c_str(),
|
|
StrEncoding.length(), false, StrType,
|
|
SourceLocation(), SourceLocation());
|
|
ReplaceStmt(Exp, Replacement);
|
|
|
|
// Replace this subexpr in the parent.
|
|
// delete Exp; leak for now, see RewritePropertySetter() usage for more info.
|
|
return Replacement;
|
|
}
|
|
|
|
Stmt *RewriteObjC::RewriteAtSelector(ObjCSelectorExpr *Exp) {
|
|
if (!SelGetUidFunctionDecl)
|
|
SynthSelGetUidFunctionDecl();
|
|
assert(SelGetUidFunctionDecl && "Can't find sel_registerName() decl");
|
|
// Create a call to sel_registerName("selName").
|
|
llvm::SmallVector<Expr*, 8> SelExprs;
|
|
QualType argType = Context->getPointerType(Context->CharTy);
|
|
SelExprs.push_back(new (Context) StringLiteral((*Context),
|
|
Exp->getSelector().getAsString().c_str(),
|
|
Exp->getSelector().getAsString().size(),
|
|
false, argType, SourceLocation(),
|
|
SourceLocation()));
|
|
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
|
|
&SelExprs[0], SelExprs.size());
|
|
ReplaceStmt(Exp, SelExp);
|
|
// delete Exp; leak for now, see RewritePropertySetter() usage for more info.
|
|
return SelExp;
|
|
}
|
|
|
|
CallExpr *RewriteObjC::SynthesizeCallToFunctionDecl(
|
|
FunctionDecl *FD, Expr **args, unsigned nargs) {
|
|
// 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(FD, msgSendType, SourceLocation());
|
|
|
|
// Now, we cast the reference to a pointer to the objc_msgSend type.
|
|
QualType pToFunc = Context->getPointerType(msgSendType);
|
|
ImplicitCastExpr *ICE = new (Context) ImplicitCastExpr(pToFunc, DRE,
|
|
/*isLvalue=*/false);
|
|
|
|
const FunctionType *FT = msgSendType->getAsFunctionType();
|
|
|
|
return new (Context) CallExpr(*Context, ICE, args, nargs, FT->getResultType(),
|
|
SourceLocation());
|
|
}
|
|
|
|
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 RewriteObjC::needToScanForQualifiers(QualType T) {
|
|
|
|
if (T->isObjCQualifiedIdType())
|
|
return true;
|
|
|
|
if (const PointerType *pType = T->getAsPointerType()) {
|
|
Type *pointeeType = pType->getPointeeType().getTypePtr();
|
|
if (isa<ObjCQualifiedInterfaceType>(pointeeType))
|
|
return true; // we have "Class <Protocol> *".
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void RewriteObjC::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->getLocStart();
|
|
EndLoc = E->getLocEnd();
|
|
}
|
|
// 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 = 0, *endRef = 0;
|
|
if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
|
|
// Get the locations of the startRef, endRef.
|
|
SourceLocation LessLoc = Loc.getFileLocWithOffset(startRef-startBuf);
|
|
SourceLocation GreaterLoc = Loc.getFileLocWithOffset(endRef-startBuf+1);
|
|
// Comment out the protocol references.
|
|
InsertText(LessLoc, "/*", 2);
|
|
InsertText(GreaterLoc, "*/", 2);
|
|
}
|
|
}
|
|
}
|
|
|
|
void RewriteObjC::RewriteObjCQualifiedInterfaceTypes(Decl *Dcl) {
|
|
SourceLocation Loc;
|
|
QualType Type;
|
|
const FunctionTypeProto *proto = 0;
|
|
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()->getAsFunctionType();
|
|
assert(funcType && "missing function type");
|
|
proto = dyn_cast<FunctionTypeProto>(funcType);
|
|
if (!proto)
|
|
return;
|
|
Type = proto->getResultType();
|
|
}
|
|
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 = 0, *endRef = 0;
|
|
if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
|
|
// Get the locations of the startRef, endRef.
|
|
SourceLocation LessLoc = Loc.getFileLocWithOffset(startRef-endBuf);
|
|
SourceLocation GreaterLoc = Loc.getFileLocWithOffset(endRef-endBuf+1);
|
|
// Comment out the protocol references.
|
|
InsertText(LessLoc, "/*", 2);
|
|
InsertText(GreaterLoc, "*/", 2);
|
|
}
|
|
}
|
|
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->getNumArgs(); i++) {
|
|
if (needToScanForQualifiers(proto->getArgType(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 = 0, *endRef = 0;
|
|
if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
|
|
// Get the locations of the startRef, endRef.
|
|
SourceLocation LessLoc =
|
|
Loc.getFileLocWithOffset(startRef-startFuncBuf);
|
|
SourceLocation GreaterLoc =
|
|
Loc.getFileLocWithOffset(endRef-startFuncBuf+1);
|
|
// Comment out the protocol references.
|
|
InsertText(LessLoc, "/*", 2);
|
|
InsertText(GreaterLoc, "*/", 2);
|
|
}
|
|
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++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// SynthSelGetUidFunctionDecl - SEL sel_registerName(const char *str);
|
|
void RewriteObjC::SynthSelGetUidFunctionDecl() {
|
|
IdentifierInfo *SelGetUidIdent = &Context->Idents.get("sel_registerName");
|
|
llvm::SmallVector<QualType, 16> ArgTys;
|
|
ArgTys.push_back(Context->getPointerType(
|
|
Context->CharTy.getQualifiedType(QualType::Const)));
|
|
QualType getFuncType = Context->getFunctionType(Context->getObjCSelType(),
|
|
&ArgTys[0], ArgTys.size(),
|
|
false /*isVariadic*/, 0);
|
|
SelGetUidFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SelGetUidIdent, getFuncType,
|
|
FunctionDecl::Extern, false);
|
|
}
|
|
|
|
// SynthGetProtocolFunctionDecl - Protocol objc_getProtocol(const char *proto);
|
|
void RewriteObjC::SynthGetProtocolFunctionDecl() {
|
|
IdentifierInfo *SelGetProtoIdent = &Context->Idents.get("objc_getProtocol");
|
|
llvm::SmallVector<QualType, 16> ArgTys;
|
|
ArgTys.push_back(Context->getPointerType(
|
|
Context->CharTy.getQualifiedType(QualType::Const)));
|
|
QualType getFuncType = Context->getFunctionType(Context->getObjCProtoType(),
|
|
&ArgTys[0], ArgTys.size(),
|
|
false /*isVariadic*/, 0);
|
|
GetProtocolFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
SelGetProtoIdent, getFuncType,
|
|
FunctionDecl::Extern, false);
|
|
}
|
|
|
|
void RewriteObjC::RewriteFunctionDecl(FunctionDecl *FD) {
|
|
// declared in <objc/objc.h>
|
|
if (FD->getIdentifier() &&
|
|
strcmp(FD->getNameAsCString(), "sel_registerName") == 0) {
|
|
SelGetUidFunctionDecl = FD;
|
|
return;
|
|
}
|
|
RewriteObjCQualifiedInterfaceTypes(FD);
|
|
}
|
|
|
|
// SynthSuperContructorFunctionDecl - id objc_super(id obj, id super);
|
|
void RewriteObjC::SynthSuperContructorFunctionDecl() {
|
|
if (SuperContructorFunctionDecl)
|
|
return;
|
|
IdentifierInfo *msgSendIdent = &Context->Idents.get("__rw_objc_super");
|
|
llvm::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 = Context->getFunctionType(Context->getObjCIdType(),
|
|
&ArgTys[0], ArgTys.size(),
|
|
false, 0);
|
|
SuperContructorFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType,
|
|
FunctionDecl::Extern, false);
|
|
}
|
|
|
|
// SynthMsgSendFunctionDecl - id objc_msgSend(id self, SEL op, ...);
|
|
void RewriteObjC::SynthMsgSendFunctionDecl() {
|
|
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend");
|
|
llvm::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 = Context->getFunctionType(Context->getObjCIdType(),
|
|
&ArgTys[0], ArgTys.size(),
|
|
true /*isVariadic*/, 0);
|
|
MsgSendFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType,
|
|
FunctionDecl::Extern, false);
|
|
}
|
|
|
|
// SynthMsgSendSuperFunctionDecl - id objc_msgSendSuper(struct objc_super *, SEL op, ...);
|
|
void RewriteObjC::SynthMsgSendSuperFunctionDecl() {
|
|
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSendSuper");
|
|
llvm::SmallVector<QualType, 16> ArgTys;
|
|
RecordDecl *RD = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
|
|
SourceLocation(),
|
|
&Context->Idents.get("objc_super"));
|
|
QualType argT = Context->getPointerType(Context->getTagDeclType(RD));
|
|
assert(!argT.isNull() && "Can't build 'struct objc_super *' type");
|
|
ArgTys.push_back(argT);
|
|
argT = Context->getObjCSelType();
|
|
assert(!argT.isNull() && "Can't find 'SEL' type");
|
|
ArgTys.push_back(argT);
|
|
QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
|
|
&ArgTys[0], ArgTys.size(),
|
|
true /*isVariadic*/, 0);
|
|
MsgSendSuperFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType,
|
|
FunctionDecl::Extern, false);
|
|
}
|
|
|
|
// SynthMsgSendStretFunctionDecl - id objc_msgSend_stret(id self, SEL op, ...);
|
|
void RewriteObjC::SynthMsgSendStretFunctionDecl() {
|
|
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_stret");
|
|
llvm::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 = Context->getFunctionType(Context->getObjCIdType(),
|
|
&ArgTys[0], ArgTys.size(),
|
|
true /*isVariadic*/, 0);
|
|
MsgSendStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType,
|
|
FunctionDecl::Extern, false);
|
|
}
|
|
|
|
// SynthMsgSendSuperStretFunctionDecl -
|
|
// id objc_msgSendSuper_stret(struct objc_super *, SEL op, ...);
|
|
void RewriteObjC::SynthMsgSendSuperStretFunctionDecl() {
|
|
IdentifierInfo *msgSendIdent =
|
|
&Context->Idents.get("objc_msgSendSuper_stret");
|
|
llvm::SmallVector<QualType, 16> ArgTys;
|
|
RecordDecl *RD = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
|
|
SourceLocation(),
|
|
&Context->Idents.get("objc_super"));
|
|
QualType argT = Context->getPointerType(Context->getTagDeclType(RD));
|
|
assert(!argT.isNull() && "Can't build 'struct objc_super *' type");
|
|
ArgTys.push_back(argT);
|
|
argT = Context->getObjCSelType();
|
|
assert(!argT.isNull() && "Can't find 'SEL' type");
|
|
ArgTys.push_back(argT);
|
|
QualType msgSendType = Context->getFunctionType(Context->getObjCIdType(),
|
|
&ArgTys[0], ArgTys.size(),
|
|
true /*isVariadic*/, 0);
|
|
MsgSendSuperStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType,
|
|
FunctionDecl::Extern, false);
|
|
}
|
|
|
|
// SynthMsgSendFpretFunctionDecl - double objc_msgSend_fpret(id self, SEL op, ...);
|
|
void RewriteObjC::SynthMsgSendFpretFunctionDecl() {
|
|
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_fpret");
|
|
llvm::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 = Context->getFunctionType(Context->DoubleTy,
|
|
&ArgTys[0], ArgTys.size(),
|
|
true /*isVariadic*/, 0);
|
|
MsgSendFpretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
msgSendIdent, msgSendType,
|
|
FunctionDecl::Extern, false);
|
|
}
|
|
|
|
// SynthGetClassFunctionDecl - id objc_getClass(const char *name);
|
|
void RewriteObjC::SynthGetClassFunctionDecl() {
|
|
IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getClass");
|
|
llvm::SmallVector<QualType, 16> ArgTys;
|
|
ArgTys.push_back(Context->getPointerType(
|
|
Context->CharTy.getQualifiedType(QualType::Const)));
|
|
QualType getClassType = Context->getFunctionType(Context->getObjCIdType(),
|
|
&ArgTys[0], ArgTys.size(),
|
|
false /*isVariadic*/, 0);
|
|
GetClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
getClassIdent, getClassType,
|
|
FunctionDecl::Extern, false);
|
|
}
|
|
|
|
// SynthGetMetaClassFunctionDecl - id objc_getClass(const char *name);
|
|
void RewriteObjC::SynthGetMetaClassFunctionDecl() {
|
|
IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getMetaClass");
|
|
llvm::SmallVector<QualType, 16> ArgTys;
|
|
ArgTys.push_back(Context->getPointerType(
|
|
Context->CharTy.getQualifiedType(QualType::Const)));
|
|
QualType getClassType = Context->getFunctionType(Context->getObjCIdType(),
|
|
&ArgTys[0], ArgTys.size(),
|
|
false /*isVariadic*/, 0);
|
|
GetMetaClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
|
|
SourceLocation(),
|
|
getClassIdent, getClassType,
|
|
FunctionDecl::Extern, false);
|
|
}
|
|
|
|
Stmt *RewriteObjC::RewriteObjCStringLiteral(ObjCStringLiteral *Exp) {
|
|
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 (!isalpha(c) && (c < '0' || c > '9'))
|
|
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);
|
|
Preamble += prettyBuf.str();
|
|
Preamble += ",";
|
|
// The minus 2 removes the begin/end double quotes.
|
|
Preamble += utostr(prettyBuf.str().size()-2) + "};\n";
|
|
|
|
VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
|
|
&Context->Idents.get(S.c_str()), strType,
|
|
VarDecl::Static);
|
|
DeclRefExpr *DRE = new (Context) DeclRefExpr(NewVD, strType, SourceLocation());
|
|
Expr *Unop = new (Context) UnaryOperator(DRE, UnaryOperator::AddrOf,
|
|
Context->getPointerType(DRE->getType()),
|
|
SourceLocation());
|
|
// cast to NSConstantString *
|
|
CastExpr *cast = new (Context) CStyleCastExpr(Exp->getType(), Unop,
|
|
Exp->getType(), SourceLocation(), SourceLocation());
|
|
ReplaceStmt(Exp, cast);
|
|
// delete Exp; leak for now, see RewritePropertySetter() usage for more info.
|
|
return cast;
|
|
}
|
|
|
|
ObjCInterfaceDecl *RewriteObjC::isSuperReceiver(Expr *recExpr) {
|
|
// check if we are sending a message to 'super'
|
|
if (!CurMethodDef || !CurMethodDef->isInstanceMethod()) return 0;
|
|
|
|
if (ObjCSuperExpr *Super = dyn_cast<ObjCSuperExpr>(recExpr)) {
|
|
const PointerType *PT = Super->getType()->getAsPointerType();
|
|
assert(PT);
|
|
ObjCInterfaceType *IT = cast<ObjCInterfaceType>(PT->getPointeeType());
|
|
return IT->getDecl();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// struct objc_super { struct objc_object *receiver; struct objc_class *super; };
|
|
QualType RewriteObjC::getSuperStructType() {
|
|
if (!SuperStructDecl) {
|
|
SuperStructDecl = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
|
|
SourceLocation(),
|
|
&Context->Idents.get("objc_super"));
|
|
QualType FieldTypes[2];
|
|
|
|
// struct objc_object *receiver;
|
|
FieldTypes[0] = Context->getObjCIdType();
|
|
// struct objc_class *super;
|
|
FieldTypes[1] = Context->getObjCClassType();
|
|
|
|
// Create fields
|
|
for (unsigned i = 0; i < 2; ++i) {
|
|
SuperStructDecl->addDecl(FieldDecl::Create(*Context, SuperStructDecl,
|
|
SourceLocation(), 0,
|
|
FieldTypes[i], /*BitWidth=*/0,
|
|
/*Mutable=*/false));
|
|
}
|
|
|
|
SuperStructDecl->completeDefinition(*Context);
|
|
}
|
|
return Context->getTagDeclType(SuperStructDecl);
|
|
}
|
|
|
|
QualType RewriteObjC::getConstantStringStructType() {
|
|
if (!ConstantStringDecl) {
|
|
ConstantStringDecl = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
|
|
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(), 0,
|
|
FieldTypes[i],
|
|
/*BitWidth=*/0,
|
|
/*Mutable=*/true));
|
|
}
|
|
|
|
ConstantStringDecl->completeDefinition(*Context);
|
|
}
|
|
return Context->getTagDeclType(ConstantStringDecl);
|
|
}
|
|
|
|
Stmt *RewriteObjC::SynthMessageExpr(ObjCMessageExpr *Exp) {
|
|
if (!SelGetUidFunctionDecl)
|
|
SynthSelGetUidFunctionDecl();
|
|
if (!MsgSendFunctionDecl)
|
|
SynthMsgSendFunctionDecl();
|
|
if (!MsgSendSuperFunctionDecl)
|
|
SynthMsgSendSuperFunctionDecl();
|
|
if (!MsgSendStretFunctionDecl)
|
|
SynthMsgSendStretFunctionDecl();
|
|
if (!MsgSendSuperStretFunctionDecl)
|
|
SynthMsgSendSuperStretFunctionDecl();
|
|
if (!MsgSendFpretFunctionDecl)
|
|
SynthMsgSendFpretFunctionDecl();
|
|
if (!GetClassFunctionDecl)
|
|
SynthGetClassFunctionDecl();
|
|
if (!GetMetaClassFunctionDecl)
|
|
SynthGetMetaClassFunctionDecl();
|
|
|
|
// default to objc_msgSend().
|
|
FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
|
|
// May need to use objc_msgSend_stret() as well.
|
|
FunctionDecl *MsgSendStretFlavor = 0;
|
|
if (ObjCMethodDecl *mDecl = Exp->getMethodDecl()) {
|
|
QualType resultType = mDecl->getResultType();
|
|
if (resultType->isStructureType() || resultType->isUnionType())
|
|
MsgSendStretFlavor = MsgSendStretFunctionDecl;
|
|
else if (resultType->isRealFloatingType())
|
|
MsgSendFlavor = MsgSendFpretFunctionDecl;
|
|
}
|
|
|
|
// Synthesize a call to objc_msgSend().
|
|
llvm::SmallVector<Expr*, 8> MsgExprs;
|
|
IdentifierInfo *clsName = Exp->getClassName();
|
|
|
|
// Derive/push the receiver/selector, 2 implicit arguments to objc_msgSend().
|
|
if (clsName) { // class message.
|
|
// FIXME: We need to fix Sema (and the AST for ObjCMessageExpr) to handle
|
|
// the 'super' idiom within a class method.
|
|
if (!strcmp(clsName->getName(), "super")) {
|
|
MsgSendFlavor = MsgSendSuperFunctionDecl;
|
|
if (MsgSendStretFlavor)
|
|
MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
|
|
assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
|
|
|
|
ObjCInterfaceDecl *SuperDecl =
|
|
CurMethodDef->getClassInterface()->getSuperClass();
|
|
|
|
llvm::SmallVector<Expr*, 4> InitExprs;
|
|
|
|
// set the receiver to self, the first argument to all methods.
|
|
InitExprs.push_back(new (Context) DeclRefExpr(
|
|
CurMethodDef->getSelfDecl(),
|
|
Context->getObjCIdType(),
|
|
SourceLocation()));
|
|
llvm::SmallVector<Expr*, 8> ClsExprs;
|
|
QualType argType = Context->getPointerType(Context->CharTy);
|
|
ClsExprs.push_back(new (Context) StringLiteral(*Context,
|
|
SuperDecl->getIdentifier()->getName(),
|
|
SuperDecl->getIdentifier()->getLength(),
|
|
false, argType, SourceLocation(),
|
|
SourceLocation()));
|
|
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetMetaClassFunctionDecl,
|
|
&ClsExprs[0],
|
|
ClsExprs.size());
|
|
// To turn off a warning, type-cast to 'id'
|
|
InitExprs.push_back( // set 'super class', using objc_getClass().
|
|
new (Context) CStyleCastExpr(Context->getObjCIdType(),
|
|
Cls, Context->getObjCIdType(),
|
|
SourceLocation(), SourceLocation()));
|
|
// struct objc_super
|
|
QualType superType = getSuperStructType();
|
|
Expr *SuperRep;
|
|
|
|
if (LangOpts.Microsoft) {
|
|
SynthSuperContructorFunctionDecl();
|
|
// Simulate a contructor call...
|
|
DeclRefExpr *DRE = new (Context) DeclRefExpr(SuperContructorFunctionDecl,
|
|
superType, SourceLocation());
|
|
SuperRep = new (Context) CallExpr(*Context, DRE, &InitExprs[0],
|
|
InitExprs.size(),
|
|
superType, 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 objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
|
|
//
|
|
SuperRep = new (Context) UnaryOperator(SuperRep, UnaryOperator::AddrOf,
|
|
Context->getPointerType(SuperRep->getType()),
|
|
SourceLocation());
|
|
SuperRep = new (Context) CStyleCastExpr(Context->getPointerType(superType),
|
|
SuperRep, Context->getPointerType(superType),
|
|
SourceLocation(), SourceLocation());
|
|
} else {
|
|
// (struct objc_super) { <exprs from above> }
|
|
InitListExpr *ILE = new (Context) InitListExpr(SourceLocation(),
|
|
&InitExprs[0], InitExprs.size(),
|
|
SourceLocation());
|
|
SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superType, ILE,
|
|
false);
|
|
// struct objc_super *
|
|
SuperRep = new (Context) UnaryOperator(SuperRep, UnaryOperator::AddrOf,
|
|
Context->getPointerType(SuperRep->getType()),
|
|
SourceLocation());
|
|
}
|
|
MsgExprs.push_back(SuperRep);
|
|
} else {
|
|
llvm::SmallVector<Expr*, 8> ClsExprs;
|
|
QualType argType = Context->getPointerType(Context->CharTy);
|
|
ClsExprs.push_back(new (Context) StringLiteral(*Context,
|
|
clsName->getName(),
|
|
clsName->getLength(),
|
|
false, argType, SourceLocation(),
|
|
SourceLocation()));
|
|
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
|
|
&ClsExprs[0],
|
|
ClsExprs.size());
|
|
MsgExprs.push_back(Cls);
|
|
}
|
|
} else { // instance message.
|
|
Expr *recExpr = Exp->getReceiver();
|
|
|
|
if (ObjCInterfaceDecl *SuperDecl = isSuperReceiver(recExpr)) {
|
|
MsgSendFlavor = MsgSendSuperFunctionDecl;
|
|
if (MsgSendStretFlavor)
|
|
MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
|
|
assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
|
|
|
|
llvm::SmallVector<Expr*, 4> InitExprs;
|
|
|
|
InitExprs.push_back(
|
|
new (Context) CStyleCastExpr(Context->getObjCIdType(),
|
|
new (Context) DeclRefExpr(CurMethodDef->getSelfDecl(),
|
|
Context->getObjCIdType(),
|
|
SourceLocation()),
|
|
Context->getObjCIdType(),
|
|
SourceLocation(), SourceLocation())); // set the 'receiver'.
|
|
|
|
llvm::SmallVector<Expr*, 8> ClsExprs;
|
|
QualType argType = Context->getPointerType(Context->CharTy);
|
|
ClsExprs.push_back(new (Context) StringLiteral(*Context,
|
|
SuperDecl->getIdentifier()->getName(),
|
|
SuperDecl->getIdentifier()->getLength(),
|
|
false, argType, SourceLocation(),
|
|
SourceLocation()));
|
|
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
|
|
&ClsExprs[0],
|
|
ClsExprs.size());
|
|
// To turn off a warning, type-cast to 'id'
|
|
InitExprs.push_back(
|
|
// set 'super class', using objc_getClass().
|
|
new (Context) CStyleCastExpr(Context->getObjCIdType(),
|
|
Cls, Context->getObjCIdType(), SourceLocation(), SourceLocation()));
|
|
// struct objc_super
|
|
QualType superType = getSuperStructType();
|
|
Expr *SuperRep;
|
|
|
|
if (LangOpts.Microsoft) {
|
|
SynthSuperContructorFunctionDecl();
|
|
// Simulate a contructor call...
|
|
DeclRefExpr *DRE = new (Context) DeclRefExpr(SuperContructorFunctionDecl,
|
|
superType, SourceLocation());
|
|
SuperRep = new (Context) CallExpr(*Context, DRE, &InitExprs[0],
|
|
InitExprs.size(),
|
|
superType, 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 objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
|
|
//
|
|
SuperRep = new (Context) UnaryOperator(SuperRep, UnaryOperator::AddrOf,
|
|
Context->getPointerType(SuperRep->getType()),
|
|
SourceLocation());
|
|
SuperRep = new (Context) CStyleCastExpr(Context->getPointerType(superType),
|
|
SuperRep, Context->getPointerType(superType),
|
|
SourceLocation(), SourceLocation());
|
|
} else {
|
|
// (struct objc_super) { <exprs from above> }
|
|
InitListExpr *ILE = new (Context) InitListExpr(SourceLocation(),
|
|
&InitExprs[0], InitExprs.size(),
|
|
SourceLocation());
|
|
SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superType, ILE, false);
|
|
}
|
|
MsgExprs.push_back(SuperRep);
|
|
} else {
|
|
// Remove all type-casts because it may contain objc-style types; e.g.
|
|
// Foo<Proto> *.
|
|
while (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(recExpr))
|
|
recExpr = CE->getSubExpr();
|
|
recExpr = new (Context) CStyleCastExpr(Context->getObjCIdType(), recExpr,
|
|
Context->getObjCIdType(),
|
|
SourceLocation(), SourceLocation());
|
|
MsgExprs.push_back(recExpr);
|
|
}
|
|
}
|
|
// Create a call to sel_registerName("selName"), it will be the 2nd argument.
|
|
llvm::SmallVector<Expr*, 8> SelExprs;
|
|
QualType argType = Context->getPointerType(Context->CharTy);
|
|
SelExprs.push_back(new (Context) StringLiteral(*Context,
|
|
Exp->getSelector().getAsString().c_str(),
|
|
Exp->getSelector().getAsString().size(),
|
|
false, argType, SourceLocation(),
|
|
SourceLocation()));
|
|
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
|
|
&SelExprs[0], SelExprs.size());
|
|
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()->isObjCQualifiedIdType()
|
|
? Context->getObjCIdType()
|
|
: ICE->getType();
|
|
userExpr = new (Context) CStyleCastExpr(type, userExpr, type, SourceLocation(), SourceLocation());
|
|
}
|
|
// 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();
|
|
userExpr = new (Context) CStyleCastExpr(Context->getObjCIdType(),
|
|
userExpr, Context->getObjCIdType(),
|
|
SourceLocation(), SourceLocation());
|
|
}
|
|
}
|
|
MsgExprs.push_back(userExpr);
|
|
// We've transferred the ownership to MsgExprs. Null out the argument in
|
|
// the original expression, since we will delete it below.
|
|
Exp->setArg(i, 0);
|
|
}
|
|
// Generate the funky cast.
|
|
CastExpr *cast;
|
|
llvm::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 *mDecl = Exp->getMethodDecl()) {
|
|
// Push any user argument types.
|
|
for (unsigned i = 0; i < mDecl->getNumParams(); i++) {
|
|
QualType t = mDecl->getParamDecl(i)->getType()->isObjCQualifiedIdType()
|
|
? Context->getObjCIdType()
|
|
: mDecl->getParamDecl(i)->getType();
|
|
// Make sure we convert "t (^)(...)" to "t (*)(...)".
|
|
if (isTopLevelBlockPointerType(t)) {
|
|
const BlockPointerType *BPT = t->getAsBlockPointerType();
|
|
t = Context->getPointerType(BPT->getPointeeType());
|
|
}
|
|
ArgTypes.push_back(t);
|
|
}
|
|
returnType = mDecl->getResultType()->isObjCQualifiedIdType()
|
|
? Context->getObjCIdType() : mDecl->getResultType();
|
|
} 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(MsgSendFlavor, msgSendType,
|
|
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 = new (Context) CStyleCastExpr(Context->getPointerType(Context->VoidTy), DRE,
|
|
Context->getPointerType(Context->VoidTy),
|
|
SourceLocation(), SourceLocation());
|
|
|
|
// Now do the "normal" pointer to function cast.
|
|
QualType castType = Context->getFunctionType(returnType,
|
|
&ArgTypes[0], ArgTypes.size(),
|
|
// If we don't have a method decl, force a variadic cast.
|
|
Exp->getMethodDecl() ? Exp->getMethodDecl()->isVariadic() : true, 0);
|
|
castType = Context->getPointerType(castType);
|
|
cast = new (Context) CStyleCastExpr(castType, cast, castType, SourceLocation(), SourceLocation());
|
|
|
|
// Don't forget the parens to enforce the proper binding.
|
|
ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), cast);
|
|
|
|
const FunctionType *FT = msgSendType->getAsFunctionType();
|
|
CallExpr *CE = new (Context) CallExpr(*Context, PE, &MsgExprs[0],
|
|
MsgExprs.size(),
|
|
FT->getResultType(), SourceLocation());
|
|
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.
|
|
|
|
// Create a reference to the objc_msgSend_stret() declaration.
|
|
DeclRefExpr *STDRE = new (Context) DeclRefExpr(MsgSendStretFlavor, msgSendType,
|
|
SourceLocation());
|
|
// Need to cast objc_msgSend_stret to "void *" (see above comment).
|
|
cast = new (Context) CStyleCastExpr(Context->getPointerType(Context->VoidTy), STDRE,
|
|
Context->getPointerType(Context->VoidTy),
|
|
SourceLocation(), SourceLocation());
|
|
// Now do the "normal" pointer to function cast.
|
|
castType = Context->getFunctionType(returnType,
|
|
&ArgTypes[0], ArgTypes.size(),
|
|
Exp->getMethodDecl() ? Exp->getMethodDecl()->isVariadic() : false, 0);
|
|
castType = Context->getPointerType(castType);
|
|
cast = new (Context) CStyleCastExpr(castType, cast, castType, SourceLocation(), SourceLocation());
|
|
|
|
// Don't forget the parens to enforce the proper binding.
|
|
PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), cast);
|
|
|
|
FT = msgSendType->getAsFunctionType();
|
|
CallExpr *STCE = new (Context) CallExpr(*Context, PE, &MsgExprs[0],
|
|
MsgExprs.size(),
|
|
FT->getResultType(), SourceLocation());
|
|
|
|
// Build sizeof(returnType)
|
|
SizeOfAlignOfExpr *sizeofExpr = new (Context) SizeOfAlignOfExpr(true, true,
|
|
returnType.getAsOpaquePtr(),
|
|
Context->getSizeType(),
|
|
SourceLocation(), SourceLocation());
|
|
// (sizeof(returnType) <= 8 ? objc_msgSend(...) : objc_msgSend_stret(...))
|
|
// FIXME: Value of 8 is base on ppc32/x86 ABI for the most common cases.
|
|
// For X86 it is more complicated and some kind of target specific routine
|
|
// is needed to decide what to do.
|
|
unsigned IntSize =
|
|
static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
|
|
IntegerLiteral *limit = new (Context) IntegerLiteral(llvm::APInt(IntSize, 8),
|
|
Context->IntTy,
|
|
SourceLocation());
|
|
BinaryOperator *lessThanExpr = new (Context) BinaryOperator(sizeofExpr, limit,
|
|
BinaryOperator::LE,
|
|
Context->IntTy,
|
|
SourceLocation());
|
|
// (sizeof(returnType) <= 8 ? objc_msgSend(...) : objc_msgSend_stret(...))
|
|
ConditionalOperator *CondExpr =
|
|
new (Context) ConditionalOperator(lessThanExpr, CE, STCE, returnType);
|
|
ReplacingStmt = new (Context) ParenExpr(SourceLocation(), SourceLocation(), CondExpr);
|
|
}
|
|
return ReplacingStmt;
|
|
}
|
|
|
|
Stmt *RewriteObjC::RewriteMessageExpr(ObjCMessageExpr *Exp) {
|
|
Stmt *ReplacingStmt = SynthMessageExpr(Exp);
|
|
|
|
//ReplacingStmt->dump();
|
|
// Now do the actual rewrite.
|
|
ReplaceStmt(Exp, ReplacingStmt);
|
|
|
|
// delete Exp; leak for now, see RewritePropertySetter() usage for more info.
|
|
return ReplacingStmt;
|
|
}
|
|
|
|
/// RewriteObjCProtocolExpr - Rewrite a protocol expression into
|
|
/// call to objc_getProtocol("proto-name").
|
|
Stmt *RewriteObjC::RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp) {
|
|
if (!GetProtocolFunctionDecl)
|
|
SynthGetProtocolFunctionDecl();
|
|
// Create a call to objc_getProtocol("ProtocolName").
|
|
llvm::SmallVector<Expr*, 8> ProtoExprs;
|
|
QualType argType = Context->getPointerType(Context->CharTy);
|
|
ProtoExprs.push_back(new (Context)
|
|
StringLiteral(*Context,
|
|
Exp->getProtocol()->getNameAsCString(),
|
|
strlen(Exp->getProtocol()->getNameAsCString()),
|
|
false, argType, SourceLocation(),
|
|
SourceLocation()));
|
|
CallExpr *ProtoExp = SynthesizeCallToFunctionDecl(GetProtocolFunctionDecl,
|
|
&ProtoExprs[0],
|
|
ProtoExprs.size());
|
|
ReplaceStmt(Exp, ProtoExp);
|
|
// delete Exp; leak for now, see RewritePropertySetter() usage for more info.
|
|
return ProtoExp;
|
|
|
|
}
|
|
|
|
bool RewriteObjC::BufferContainsPPDirectives(const char *startBuf,
|
|
const char *endBuf) {
|
|
while (startBuf < endBuf) {
|
|
if (*startBuf == '#') {
|
|
// Skip whitespace.
|
|
for (++startBuf; startBuf[0] == ' ' || startBuf[0] == '\t'; ++startBuf)
|
|
;
|
|
if (!strncmp(startBuf, "if", strlen("if")) ||
|
|
!strncmp(startBuf, "ifdef", strlen("ifdef")) ||
|
|
!strncmp(startBuf, "ifndef", strlen("ifndef")) ||
|
|
!strncmp(startBuf, "define", strlen("define")) ||
|
|
!strncmp(startBuf, "undef", strlen("undef")) ||
|
|
!strncmp(startBuf, "else", strlen("else")) ||
|
|
!strncmp(startBuf, "elif", strlen("elif")) ||
|
|
!strncmp(startBuf, "endif", strlen("endif")) ||
|
|
!strncmp(startBuf, "pragma", strlen("pragma")) ||
|
|
!strncmp(startBuf, "include", strlen("include")) ||
|
|
!strncmp(startBuf, "import", strlen("import")) ||
|
|
!strncmp(startBuf, "include_next", strlen("include_next")))
|
|
return true;
|
|
}
|
|
startBuf++;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// SynthesizeObjCInternalStruct - Rewrite one internal struct corresponding to
|
|
/// an objective-c class with ivars.
|
|
void RewriteObjC::SynthesizeObjCInternalStruct(ObjCInterfaceDecl *CDecl,
|
|
std::string &Result) {
|
|
assert(CDecl && "Class missing in SynthesizeObjCInternalStruct");
|
|
assert(CDecl->getNameAsCString() &&
|
|
"Name missing in SynthesizeObjCInternalStruct");
|
|
// Do not synthesize more than once.
|
|
if (ObjCSynthesizedStructs.count(CDecl))
|
|
return;
|
|
ObjCInterfaceDecl *RCDecl = CDecl->getSuperClass();
|
|
int NumIvars = CDecl->ivar_size();
|
|
SourceLocation LocStart = CDecl->getLocStart();
|
|
SourceLocation LocEnd = CDecl->getLocEnd();
|
|
|
|
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->isForwardDecl() || NumIvars == 0) &&
|
|
(!RCDecl || !ObjCSynthesizedStructs.count(RCDecl))) {
|
|
endBuf += Lexer::MeasureTokenLength(LocEnd, *SM);
|
|
ReplaceText(LocStart, endBuf-startBuf, Result.c_str(), Result.size());
|
|
return;
|
|
}
|
|
|
|
// FIXME: This has potential of causing problem. If
|
|
// SynthesizeObjCInternalStruct is ever called recursively.
|
|
Result += "\nstruct ";
|
|
Result += CDecl->getNameAsString();
|
|
if (LangOpts.Microsoft)
|
|
Result += "_IMPL";
|
|
|
|
if (NumIvars > 0) {
|
|
const char *cursor = strchr(startBuf, '{');
|
|
assert((cursor && endBuf)
|
|
&& "SynthesizeObjCInternalStruct - malformed @interface");
|
|
// If the buffer contains preprocessor directives, we do more fine-grained
|
|
// rewrites. This is intended to fix code that looks like (which occurs in
|
|
// NSURL.h, for example):
|
|
//
|
|
// #ifdef XYZ
|
|
// @interface Foo : NSObject
|
|
// #else
|
|
// @interface FooBar : NSObject
|
|
// #endif
|
|
// {
|
|
// int i;
|
|
// }
|
|
// @end
|
|
//
|
|
// This clause is segregated to avoid breaking the common case.
|
|
if (BufferContainsPPDirectives(startBuf, cursor)) {
|
|
SourceLocation L = RCDecl ? CDecl->getSuperClassLoc() :
|
|
CDecl->getClassLoc();
|
|
const char *endHeader = SM->getCharacterData(L);
|
|
endHeader += Lexer::MeasureTokenLength(L, *SM);
|
|
|
|
if (!CDecl->getReferencedProtocols().empty()) {
|
|
// advance to the end of the referenced protocols.
|
|
while (endHeader < cursor && *endHeader != '>') endHeader++;
|
|
endHeader++;
|
|
}
|
|
// rewrite the original header
|
|
ReplaceText(LocStart, endHeader-startBuf, Result.c_str(), Result.size());
|
|
} else {
|
|
// rewrite the original header *without* disturbing the '{'
|
|
ReplaceText(LocStart, cursor-startBuf-1, Result.c_str(), Result.size());
|
|
}
|
|
if (RCDecl && ObjCSynthesizedStructs.count(RCDecl)) {
|
|
Result = "\n struct ";
|
|
Result += RCDecl->getNameAsString();
|
|
Result += "_IMPL ";
|
|
Result += RCDecl->getNameAsString();
|
|
Result += "_IVARS;\n";
|
|
|
|
// insert the super class structure definition.
|
|
SourceLocation OnePastCurly =
|
|
LocStart.getFileLocWithOffset(cursor-startBuf+1);
|
|
InsertText(OnePastCurly, Result.c_str(), Result.size());
|
|
}
|
|
cursor++; // past '{'
|
|
|
|
// Now comment out any visibility specifiers.
|
|
while (cursor < endBuf) {
|
|
if (*cursor == '@') {
|
|
SourceLocation atLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
|
|
// Skip whitespace.
|
|
for (++cursor; cursor[0] == ' ' || cursor[0] == '\t'; ++cursor)
|
|
/*scan*/;
|
|
|
|
// FIXME: presence of @public, etc. inside comment results in
|
|
// this transformation as well, which is still correct c-code.
|
|
if (!strncmp(cursor, "public", strlen("public")) ||
|
|
!strncmp(cursor, "private", strlen("private")) ||
|
|
!strncmp(cursor, "package", strlen("package")) ||
|
|
!strncmp(cursor, "protected", strlen("protected")))
|
|
InsertText(atLoc, "// ", 3);
|
|
}
|
|
// FIXME: If there are cases where '<' is used in ivar declaration part
|
|
// of user code, then scan the ivar list and use needToScanForQualifiers
|
|
// for type checking.
|
|
else if (*cursor == '<') {
|
|
SourceLocation atLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
|
|
InsertText(atLoc, "/* ", 3);
|
|
cursor = strchr(cursor, '>');
|
|
cursor++;
|
|
atLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
|
|
InsertText(atLoc, " */", 3);
|
|
} else if (*cursor == '^') { // rewrite block specifier.
|
|
SourceLocation caretLoc = LocStart.getFileLocWithOffset(cursor-startBuf);
|
|
ReplaceText(caretLoc, 1, "*", 1);
|
|
}
|
|
cursor++;
|
|
}
|
|
// Don't forget to add a ';'!!
|
|
InsertText(LocEnd.getFileLocWithOffset(1), ";", 1);
|
|
} else { // we don't have any instance variables - insert super struct.
|
|
endBuf += Lexer::MeasureTokenLength(LocEnd, *SM);
|
|
Result += " {\n struct ";
|
|
Result += RCDecl->getNameAsString();
|
|
Result += "_IMPL ";
|
|
Result += RCDecl->getNameAsString();
|
|
Result += "_IVARS;\n};\n";
|
|
ReplaceText(LocStart, endBuf-startBuf, Result.c_str(), Result.size());
|
|
}
|
|
// Mark this struct as having been generated.
|
|
if (!ObjCSynthesizedStructs.insert(CDecl))
|
|
assert(false && "struct already synthesize- SynthesizeObjCInternalStruct");
|
|
}
|
|
|
|
// RewriteObjCMethodsMetaData - Rewrite methods metadata for instance or
|
|
/// class methods.
|
|
void RewriteObjC::RewriteObjCMethodsMetaData(instmeth_iterator MethodBegin,
|
|
instmeth_iterator MethodEnd,
|
|
bool IsInstanceMethod,
|
|
const char *prefix,
|
|
const char *ClassName,
|
|
std::string &Result) {
|
|
if (MethodBegin == MethodEnd) return;
|
|
|
|
static bool objc_impl_method = false;
|
|
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[];
|
|
}
|
|
*/
|
|
Result += "\nstatic struct {\n";
|
|
Result += "\tstruct _objc_method_list *next_method;\n";
|
|
Result += "\tint method_count;\n";
|
|
Result += "\tstruct _objc_method method_list[";
|
|
Result += utostr(MethodEnd-MethodBegin);
|
|
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(MethodEnd-MethodBegin) + "\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";
|
|
}
|
|
|
|
/// RewriteObjCProtocolsMetaData - Rewrite protocols meta-data.
|
|
void RewriteObjC::
|
|
RewriteObjCProtocolsMetaData(const ObjCList<ObjCProtocolDecl> &Protocols,
|
|
const char *prefix,
|
|
const char *ClassName,
|
|
std::string &Result) {
|
|
static bool objc_protocol_methods = false;
|
|
if (Protocols.empty()) return;
|
|
|
|
for (unsigned i = 0; i != Protocols.size(); i++) {
|
|
ObjCProtocolDecl *PDecl = Protocols[i];
|
|
// Output struct protocol_methods holder of method selector and type.
|
|
if (!objc_protocol_methods && !PDecl->isForwardDecl()) {
|
|
/* struct protocol_methods {
|
|
SEL _cmd;
|
|
char *method_types;
|
|
}
|
|
*/
|
|
Result += "\nstruct protocol_methods {\n";
|
|
Result += "\tSEL _cmd;\n";
|
|
Result += "\tchar *method_types;\n";
|
|
Result += "};\n";
|
|
|
|
objc_protocol_methods = true;
|
|
}
|
|
// Do not synthesize the protocol more than once.
|
|
if (ObjCSynthesizedProtocols.count(PDecl))
|
|
continue;
|
|
|
|
if (PDecl->instmeth_begin() != PDecl->instmeth_end()) {
|
|
unsigned NumMethods = PDecl->getNumInstanceMethods();
|
|
/* struct _objc_protocol_method_list {
|
|
int protocol_method_count;
|
|
struct protocol_methods protocols[];
|
|
}
|
|
*/
|
|
Result += "\nstatic struct {\n";
|
|
Result += "\tint protocol_method_count;\n";
|
|
Result += "\tstruct protocol_methods protocols[";
|
|
Result += utostr(NumMethods);
|
|
Result += "];\n} _OBJC_PROTOCOL_INSTANCE_METHODS_";
|
|
Result += PDecl->getNameAsString();
|
|
Result += " __attribute__ ((used, section (\"__OBJC, __cat_inst_meth\")))= "
|
|
"{\n\t" + utostr(NumMethods) + "\n";
|
|
|
|
// Output instance methods declared in this protocol.
|
|
for (ObjCProtocolDecl::instmeth_iterator I = PDecl->instmeth_begin(),
|
|
E = PDecl->instmeth_end(); I != E; ++I) {
|
|
if (I == PDecl->instmeth_begin())
|
|
Result += "\t ,{{(SEL)\"";
|
|
else
|
|
Result += "\t ,{(SEL)\"";
|
|
Result += (*I)->getSelector().getAsString().c_str();
|
|
std::string MethodTypeString;
|
|
Context->getObjCEncodingForMethodDecl((*I), MethodTypeString);
|
|
Result += "\", \"";
|
|
Result += MethodTypeString;
|
|
Result += "\"}\n";
|
|
}
|
|
Result += "\t }\n};\n";
|
|
}
|
|
|
|
// Output class methods declared in this protocol.
|
|
int NumMethods = PDecl->getNumClassMethods();
|
|
if (NumMethods > 0) {
|
|
/* struct _objc_protocol_method_list {
|
|
int protocol_method_count;
|
|
struct protocol_methods protocols[];
|
|
}
|
|
*/
|
|
Result += "\nstatic struct {\n";
|
|
Result += "\tint protocol_method_count;\n";
|
|
Result += "\tstruct protocol_methods protocols[";
|
|
Result += utostr(NumMethods);
|
|
Result += "];\n} _OBJC_PROTOCOL_CLASS_METHODS_";
|
|
Result += PDecl->getNameAsString();
|
|
Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= "
|
|
"{\n\t";
|
|
Result += utostr(NumMethods);
|
|
Result += "\n";
|
|
|
|
// Output instance methods declared in this protocol.
|
|
for (ObjCProtocolDecl::classmeth_iterator I = PDecl->classmeth_begin(),
|
|
E = PDecl->classmeth_end(); I != E; ++I) {
|
|
if (I == PDecl->classmeth_begin())
|
|
Result += "\t ,{{(SEL)\"";
|
|
else
|
|
Result += "\t ,{(SEL)\"";
|
|
Result += (*I)->getSelector().getAsString().c_str();
|
|
std::string MethodTypeString;
|
|
Context->getObjCEncodingForMethodDecl((*I), MethodTypeString);
|
|
Result += "\", \"";
|
|
Result += MethodTypeString;
|
|
Result += "\"}\n";
|
|
}
|
|
Result += "\t }\n};\n";
|
|
}
|
|
|
|
// Output:
|
|
/* struct _objc_protocol {
|
|
// Objective-C 1.0 extensions
|
|
struct _objc_protocol_extension *isa;
|
|
char *protocol_name;
|
|
struct _objc_protocol **protocol_list;
|
|
struct _objc_protocol_method_list *instance_methods;
|
|
struct _objc_protocol_method_list *class_methods;
|
|
};
|
|
*/
|
|
static bool objc_protocol = false;
|
|
if (!objc_protocol) {
|
|
Result += "\nstruct _objc_protocol {\n";
|
|
Result += "\tstruct _objc_protocol_extension *isa;\n";
|
|
Result += "\tchar *protocol_name;\n";
|
|
Result += "\tstruct _objc_protocol **protocol_list;\n";
|
|
Result += "\tstruct _objc_protocol_method_list *instance_methods;\n";
|
|
Result += "\tstruct _objc_protocol_method_list *class_methods;\n";
|
|
Result += "};\n";
|
|
|
|
objc_protocol = true;
|
|
}
|
|
|
|
Result += "\nstatic struct _objc_protocol _OBJC_PROTOCOL_";
|
|
Result += PDecl->getNameAsString();
|
|
Result += " __attribute__ ((used, section (\"__OBJC, __protocol\")))= "
|
|
"{\n\t0, \"";
|
|
Result += PDecl->getNameAsString();
|
|
Result += "\", 0, ";
|
|
if (PDecl->instmeth_begin() != PDecl->instmeth_end()) {
|
|
Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_INSTANCE_METHODS_";
|
|
Result += PDecl->getNameAsString();
|
|
Result += ", ";
|
|
}
|
|
else
|
|
Result += "0, ";
|
|
if (PDecl->getNumClassMethods() > 0) {
|
|
Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_CLASS_METHODS_";
|
|
Result += PDecl->getNameAsString();
|
|
Result += "\n";
|
|
}
|
|
else
|
|
Result += "0\n";
|
|
Result += "};\n";
|
|
|
|
// Mark this protocol as having been generated.
|
|
if (!ObjCSynthesizedProtocols.insert(PDecl))
|
|
assert(false && "protocol already synthesized");
|
|
}
|
|
// Output the top lovel protocol meta-data for the class.
|
|
/* struct _objc_protocol_list {
|
|
struct _objc_protocol_list *next;
|
|
int protocol_count;
|
|
struct _objc_protocol *class_protocols[];
|
|
}
|
|
*/
|
|
Result += "\nstatic struct {\n";
|
|
Result += "\tstruct _objc_protocol_list *next;\n";
|
|
Result += "\tint protocol_count;\n";
|
|
Result += "\tstruct _objc_protocol *class_protocols[";
|
|
Result += utostr(Protocols.size());
|
|
Result += "];\n} _OBJC_";
|
|
Result += prefix;
|
|
Result += "_PROTOCOLS_";
|
|
Result += ClassName;
|
|
Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= "
|
|
"{\n\t0, ";
|
|
Result += utostr(Protocols.size());
|
|
Result += "\n";
|
|
|
|
Result += "\t,{&_OBJC_PROTOCOL_";
|
|
Result += Protocols[0]->getNameAsString();
|
|
Result += " \n";
|
|
|
|
for (unsigned i = 1; i != Protocols.size(); i++) {
|
|
Result += "\t ,&_OBJC_PROTOCOL_";
|
|
Result += Protocols[i]->getNameAsString();
|
|
Result += "\n";
|
|
}
|
|
Result += "\t }\n};\n";
|
|
}
|
|
|
|
/// RewriteObjCCategoryImplDecl - Rewrite metadata for each category
|
|
/// implementation.
|
|
void RewriteObjC::RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *IDecl,
|
|
std::string &Result) {
|
|
ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface();
|
|
// Find category declaration for this implementation.
|
|
ObjCCategoryDecl *CDecl;
|
|
for (CDecl = ClassDecl->getCategoryList(); CDecl;
|
|
CDecl = CDecl->getNextClassCategory())
|
|
if (CDecl->getIdentifier() == IDecl->getIdentifier())
|
|
break;
|
|
|
|
std::string FullCategoryName = ClassDecl->getNameAsString();
|
|
FullCategoryName += '_';
|
|
FullCategoryName += IDecl->getNameAsString();
|
|
|
|
// Build _objc_method_list for class's instance methods if needed
|
|
RewriteObjCMethodsMetaData(IDecl->instmeth_begin(), IDecl->instmeth_end(),
|
|
true, "CATEGORY_", FullCategoryName.c_str(),
|
|
Result);
|
|
|
|
// Build _objc_method_list for class's class methods if needed
|
|
RewriteObjCMethodsMetaData(IDecl->classmeth_begin(), IDecl->classmeth_end(),
|
|
false, "CATEGORY_", FullCategoryName.c_str(),
|
|
Result);
|
|
|
|
// Protocols referenced in class declaration?
|
|
// Null CDecl is case of a category implementation with no category interface
|
|
if (CDecl)
|
|
RewriteObjCProtocolsMetaData(CDecl->getReferencedProtocols(), "CATEGORY",
|
|
FullCategoryName.c_str(), Result);
|
|
|
|
/* struct _objc_category {
|
|
char *category_name;
|
|
char *class_name;
|
|
struct _objc_method_list *instance_methods;
|
|
struct _objc_method_list *class_methods;
|
|
struct _objc_protocol_list *protocols;
|
|
// Objective-C 1.0 extensions
|
|
uint32_t size; // sizeof (struct _objc_category)
|
|
struct _objc_property_list *instance_properties; // category's own
|
|
// @property decl.
|
|
};
|
|
*/
|
|
|
|
static bool objc_category = false;
|
|
if (!objc_category) {
|
|
Result += "\nstruct _objc_category {\n";
|
|
Result += "\tchar *category_name;\n";
|
|
Result += "\tchar *class_name;\n";
|
|
Result += "\tstruct _objc_method_list *instance_methods;\n";
|
|
Result += "\tstruct _objc_method_list *class_methods;\n";
|
|
Result += "\tstruct _objc_protocol_list *protocols;\n";
|
|
Result += "\tunsigned int size;\n";
|
|
Result += "\tstruct _objc_property_list *instance_properties;\n";
|
|
Result += "};\n";
|
|
objc_category = true;
|
|
}
|
|
Result += "\nstatic struct _objc_category _OBJC_CATEGORY_";
|
|
Result += FullCategoryName;
|
|
Result += " __attribute__ ((used, section (\"__OBJC, __category\")))= {\n\t\"";
|
|
Result += IDecl->getNameAsString();
|
|
Result += "\"\n\t, \"";
|
|
Result += ClassDecl->getNameAsString();
|
|
Result += "\"\n";
|
|
|
|
if (IDecl->getNumInstanceMethods() > 0) {
|
|
Result += "\t, (struct _objc_method_list *)"
|
|
"&_OBJC_CATEGORY_INSTANCE_METHODS_";
|
|
Result += FullCategoryName;
|
|
Result += "\n";
|
|
}
|
|
else
|
|
Result += "\t, 0\n";
|
|
if (IDecl->getNumClassMethods() > 0) {
|
|
Result += "\t, (struct _objc_method_list *)"
|
|
"&_OBJC_CATEGORY_CLASS_METHODS_";
|
|
Result += FullCategoryName;
|
|
Result += "\n";
|
|
}
|
|
else
|
|
Result += "\t, 0\n";
|
|
|
|
if (CDecl && !CDecl->getReferencedProtocols().empty()) {
|
|
Result += "\t, (struct _objc_protocol_list *)&_OBJC_CATEGORY_PROTOCOLS_";
|
|
Result += FullCategoryName;
|
|
Result += "\n";
|
|
}
|
|
else
|
|
Result += "\t, 0\n";
|
|
Result += "\t, sizeof(struct _objc_category), 0\n};\n";
|
|
}
|
|
|
|
/// SynthesizeIvarOffsetComputation - This rutine synthesizes computation of
|
|
/// ivar offset.
|
|
void RewriteObjC::SynthesizeIvarOffsetComputation(ObjCImplementationDecl *IDecl,
|
|
ObjCIvarDecl *ivar,
|
|
std::string &Result) {
|
|
if (ivar->isBitField()) {
|
|
// FIXME: The hack below doesn't work for bitfields. For now, we simply
|
|
// place all bitfields at offset 0.
|
|
Result += "0";
|
|
} else {
|
|
Result += "__OFFSETOFIVAR__(struct ";
|
|
Result += IDecl->getNameAsString();
|
|
if (LangOpts.Microsoft)
|
|
Result += "_IMPL";
|
|
Result += ", ";
|
|
Result += ivar->getNameAsString();
|
|
Result += ")";
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Meta Data Emission
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void RewriteObjC::RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
|
|
std::string &Result) {
|
|
ObjCInterfaceDecl *CDecl = IDecl->getClassInterface();
|
|
|
|
// Explictly declared @interface's are already synthesized.
|
|
if (CDecl->ImplicitInterfaceDecl()) {
|
|
// FIXME: Implementation of a class with no @interface (legacy) doese not
|
|
// produce correct synthesis as yet.
|
|
SynthesizeObjCInternalStruct(CDecl, Result);
|
|
}
|
|
|
|
// Build _objc_ivar_list metadata for classes ivars if needed
|
|
unsigned NumIvars = !IDecl->ivar_empty()
|
|
? IDecl->ivar_size()
|
|
: (CDecl ? CDecl->ivar_size() : 0);
|
|
if (NumIvars > 0) {
|
|
static bool objc_ivar = false;
|
|
if (!objc_ivar) {
|
|
/* struct _objc_ivar {
|
|
char *ivar_name;
|
|
char *ivar_type;
|
|
int ivar_offset;
|
|
};
|
|
*/
|
|
Result += "\nstruct _objc_ivar {\n";
|
|
Result += "\tchar *ivar_name;\n";
|
|
Result += "\tchar *ivar_type;\n";
|
|
Result += "\tint ivar_offset;\n";
|
|
Result += "};\n";
|
|
|
|
objc_ivar = true;
|
|
}
|
|
|
|
/* struct {
|
|
int ivar_count;
|
|
struct _objc_ivar ivar_list[nIvars];
|
|
};
|
|
*/
|
|
Result += "\nstatic struct {\n";
|
|
Result += "\tint ivar_count;\n";
|
|
Result += "\tstruct _objc_ivar ivar_list[";
|
|
Result += utostr(NumIvars);
|
|
Result += "];\n} _OBJC_INSTANCE_VARIABLES_";
|
|
Result += IDecl->getNameAsString();
|
|
Result += " __attribute__ ((used, section (\"__OBJC, __instance_vars\")))= "
|
|
"{\n\t";
|
|
Result += utostr(NumIvars);
|
|
Result += "\n";
|
|
|
|
ObjCInterfaceDecl::ivar_iterator IVI, IVE;
|
|
if (!IDecl->ivar_empty()) {
|
|
IVI = IDecl->ivar_begin();
|
|
IVE = IDecl->ivar_end();
|
|
} else {
|
|
IVI = CDecl->ivar_begin();
|
|
IVE = CDecl->ivar_end();
|
|
}
|
|
Result += "\t,{{\"";
|
|
Result += (*IVI)->getNameAsString();
|
|
Result += "\", \"";
|
|
std::string StrEncoding;
|
|
Context->getObjCEncodingForType((*IVI)->getType(), StrEncoding);
|
|
Result += StrEncoding;
|
|
Result += "\", ";
|
|
SynthesizeIvarOffsetComputation(IDecl, *IVI, Result);
|
|
Result += "}\n";
|
|
for (++IVI; IVI != IVE; ++IVI) {
|
|
Result += "\t ,{\"";
|
|
Result += (*IVI)->getNameAsString();
|
|
Result += "\", \"";
|
|
std::string StrEncoding;
|
|
Context->getObjCEncodingForType((*IVI)->getType(), StrEncoding);
|
|
Result += StrEncoding;
|
|
Result += "\", ";
|
|
SynthesizeIvarOffsetComputation(IDecl, (*IVI), Result);
|
|
Result += "}\n";
|
|
}
|
|
|
|
Result += "\t }\n};\n";
|
|
}
|
|
|
|
// Build _objc_method_list for class's instance methods if needed
|
|
RewriteObjCMethodsMetaData(IDecl->instmeth_begin(), IDecl->instmeth_end(),
|
|
true, "", IDecl->getNameAsCString(), Result);
|
|
|
|
// Build _objc_method_list for class's class methods if needed
|
|
RewriteObjCMethodsMetaData(IDecl->classmeth_begin(), IDecl->classmeth_end(),
|
|
false, "", IDecl->getNameAsCString(), Result);
|
|
|
|
// Protocols referenced in class declaration?
|
|
RewriteObjCProtocolsMetaData(CDecl->getReferencedProtocols(),
|
|
"CLASS", CDecl->getNameAsCString(), Result);
|
|
|
|
|
|
// Declaration of class/meta-class metadata
|
|
/* struct _objc_class {
|
|
struct _objc_class *isa; // or const char *root_class_name when metadata
|
|
const char *super_class_name;
|
|
char *name;
|
|
long version;
|
|
long info;
|
|
long instance_size;
|
|
struct _objc_ivar_list *ivars;
|
|
struct _objc_method_list *methods;
|
|
struct objc_cache *cache;
|
|
struct objc_protocol_list *protocols;
|
|
const char *ivar_layout;
|
|
struct _objc_class_ext *ext;
|
|
};
|
|
*/
|
|
static bool objc_class = false;
|
|
if (!objc_class) {
|
|
Result += "\nstruct _objc_class {\n";
|
|
Result += "\tstruct _objc_class *isa;\n";
|
|
Result += "\tconst char *super_class_name;\n";
|
|
Result += "\tchar *name;\n";
|
|
Result += "\tlong version;\n";
|
|
Result += "\tlong info;\n";
|
|
Result += "\tlong instance_size;\n";
|
|
Result += "\tstruct _objc_ivar_list *ivars;\n";
|
|
Result += "\tstruct _objc_method_list *methods;\n";
|
|
Result += "\tstruct objc_cache *cache;\n";
|
|
Result += "\tstruct _objc_protocol_list *protocols;\n";
|
|
Result += "\tconst char *ivar_layout;\n";
|
|
Result += "\tstruct _objc_class_ext *ext;\n";
|
|
Result += "};\n";
|
|
objc_class = true;
|
|
}
|
|
|
|
// Meta-class metadata generation.
|
|
ObjCInterfaceDecl *RootClass = 0;
|
|
ObjCInterfaceDecl *SuperClass = CDecl->getSuperClass();
|
|
while (SuperClass) {
|
|
RootClass = SuperClass;
|
|
SuperClass = SuperClass->getSuperClass();
|
|
}
|
|
SuperClass = CDecl->getSuperClass();
|
|
|
|
Result += "\nstatic struct _objc_class _OBJC_METACLASS_";
|
|
Result += CDecl->getNameAsString();
|
|
Result += " __attribute__ ((used, section (\"__OBJC, __meta_class\")))= "
|
|
"{\n\t(struct _objc_class *)\"";
|
|
Result += (RootClass ? RootClass->getNameAsString() : CDecl->getNameAsString());
|
|
Result += "\"";
|
|
|
|
if (SuperClass) {
|
|
Result += ", \"";
|
|
Result += SuperClass->getNameAsString();
|
|
Result += "\", \"";
|
|
Result += CDecl->getNameAsString();
|
|
Result += "\"";
|
|
}
|
|
else {
|
|
Result += ", 0, \"";
|
|
Result += CDecl->getNameAsString();
|
|
Result += "\"";
|
|
}
|
|
// Set 'ivars' field for root class to 0. ObjC1 runtime does not use it.
|
|
// 'info' field is initialized to CLS_META(2) for metaclass
|
|
Result += ", 0,2, sizeof(struct _objc_class), 0";
|
|
if (IDecl->getNumClassMethods() > 0) {
|
|
Result += "\n\t, (struct _objc_method_list *)&_OBJC_CLASS_METHODS_";
|
|
Result += IDecl->getNameAsString();
|
|
Result += "\n";
|
|
}
|
|
else
|
|
Result += ", 0\n";
|
|
if (!CDecl->getReferencedProtocols().empty()) {
|
|
Result += "\t,0, (struct _objc_protocol_list *)&_OBJC_CLASS_PROTOCOLS_";
|
|
Result += CDecl->getNameAsString();
|
|
Result += ",0,0\n";
|
|
}
|
|
else
|
|
Result += "\t,0,0,0,0\n";
|
|
Result += "};\n";
|
|
|
|
// class metadata generation.
|
|
Result += "\nstatic struct _objc_class _OBJC_CLASS_";
|
|
Result += CDecl->getNameAsString();
|
|
Result += " __attribute__ ((used, section (\"__OBJC, __class\")))= "
|
|
"{\n\t&_OBJC_METACLASS_";
|
|
Result += CDecl->getNameAsString();
|
|
if (SuperClass) {
|
|
Result += ", \"";
|
|
Result += SuperClass->getNameAsString();
|
|
Result += "\", \"";
|
|
Result += CDecl->getNameAsString();
|
|
Result += "\"";
|
|
}
|
|
else {
|
|
Result += ", 0, \"";
|
|
Result += CDecl->getNameAsString();
|
|
Result += "\"";
|
|
}
|
|
// 'info' field is initialized to CLS_CLASS(1) for class
|
|
Result += ", 0,1";
|
|
if (!ObjCSynthesizedStructs.count(CDecl))
|
|
Result += ",0";
|
|
else {
|
|
// class has size. Must synthesize its size.
|
|
Result += ",sizeof(struct ";
|
|
Result += CDecl->getNameAsString();
|
|
if (LangOpts.Microsoft)
|
|
Result += "_IMPL";
|
|
Result += ")";
|
|
}
|
|
if (NumIvars > 0) {
|
|
Result += ", (struct _objc_ivar_list *)&_OBJC_INSTANCE_VARIABLES_";
|
|
Result += CDecl->getNameAsString();
|
|
Result += "\n\t";
|
|
}
|
|
else
|
|
Result += ",0";
|
|
if (IDecl->getNumInstanceMethods() > 0) {
|
|
Result += ", (struct _objc_method_list *)&_OBJC_INSTANCE_METHODS_";
|
|
Result += CDecl->getNameAsString();
|
|
Result += ", 0\n\t";
|
|
}
|
|
else
|
|
Result += ",0,0";
|
|
if (!CDecl->getReferencedProtocols().empty()) {
|
|
Result += ", (struct _objc_protocol_list*)&_OBJC_CLASS_PROTOCOLS_";
|
|
Result += CDecl->getNameAsString();
|
|
Result += ", 0,0\n";
|
|
}
|
|
else
|
|
Result += ",0,0,0\n";
|
|
Result += "};\n";
|
|
}
|
|
|
|
/// RewriteImplementations - This routine rewrites all method implementations
|
|
/// and emits meta-data.
|
|
|
|
void RewriteObjC::RewriteImplementations() {
|
|
int ClsDefCount = ClassImplementation.size();
|
|
int CatDefCount = CategoryImplementation.size();
|
|
|
|
// Rewrite implemented methods
|
|
for (int i = 0; i < ClsDefCount; i++)
|
|
RewriteImplementationDecl(ClassImplementation[i]);
|
|
|
|
for (int i = 0; i < CatDefCount; i++)
|
|
RewriteImplementationDecl(CategoryImplementation[i]);
|
|
}
|
|
|
|
void RewriteObjC::SynthesizeMetaDataIntoBuffer(std::string &Result) {
|
|
int ClsDefCount = ClassImplementation.size();
|
|
int CatDefCount = CategoryImplementation.size();
|
|
|
|
// This is needed for determining instance variable offsets.
|
|
Result += "\n#define __OFFSETOFIVAR__(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER)\n";
|
|
// For each implemented class, write out all its meta data.
|
|
for (int i = 0; i < ClsDefCount; i++)
|
|
RewriteObjCClassMetaData(ClassImplementation[i], Result);
|
|
|
|
// For each implemented category, write out all its meta data.
|
|
for (int i = 0; i < CatDefCount; i++)
|
|
RewriteObjCCategoryImplDecl(CategoryImplementation[i], Result);
|
|
|
|
// Write objc_symtab metadata
|
|
/*
|
|
struct _objc_symtab
|
|
{
|
|
long sel_ref_cnt;
|
|
SEL *refs;
|
|
short cls_def_cnt;
|
|
short cat_def_cnt;
|
|
void *defs[cls_def_cnt + cat_def_cnt];
|
|
};
|
|
*/
|
|
|
|
Result += "\nstruct _objc_symtab {\n";
|
|
Result += "\tlong sel_ref_cnt;\n";
|
|
Result += "\tSEL *refs;\n";
|
|
Result += "\tshort cls_def_cnt;\n";
|
|
Result += "\tshort cat_def_cnt;\n";
|
|
Result += "\tvoid *defs[" + utostr(ClsDefCount + CatDefCount)+ "];\n";
|
|
Result += "};\n\n";
|
|
|
|
Result += "static struct _objc_symtab "
|
|
"_OBJC_SYMBOLS __attribute__((used, section (\"__OBJC, __symbols\")))= {\n";
|
|
Result += "\t0, 0, " + utostr(ClsDefCount)
|
|
+ ", " + utostr(CatDefCount) + "\n";
|
|
for (int i = 0; i < ClsDefCount; i++) {
|
|
Result += "\t,&_OBJC_CLASS_";
|
|
Result += ClassImplementation[i]->getNameAsString();
|
|
Result += "\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\n";
|
|
|
|
// Write objc_module metadata
|
|
|
|
/*
|
|
struct _objc_module {
|
|
long version;
|
|
long size;
|
|
const char *name;
|
|
struct _objc_symtab *symtab;
|
|
}
|
|
*/
|
|
|
|
Result += "\nstruct _objc_module {\n";
|
|
Result += "\tlong version;\n";
|
|
Result += "\tlong size;\n";
|
|
Result += "\tconst char *name;\n";
|
|
Result += "\tstruct _objc_symtab *symtab;\n";
|
|
Result += "};\n\n";
|
|
Result += "static struct _objc_module "
|
|
"_OBJC_MODULES __attribute__ ((used, section (\"__OBJC, __module_info\")))= {\n";
|
|
Result += "\t" + utostr(OBJC_ABI_VERSION) +
|
|
", sizeof(struct _objc_module), \"\", &_OBJC_SYMBOLS\n";
|
|
Result += "};\n\n";
|
|
|
|
if (LangOpts.Microsoft) {
|
|
Result += "#pragma section(\".objc_module_info$B\",long,read,write)\n";
|
|
Result += "#pragma data_seg(push, \".objc_module_info$B\")\n";
|
|
Result += "static struct _objc_module *_POINTER_OBJC_MODULES = ";
|
|
Result += "&_OBJC_MODULES;\n";
|
|
Result += "#pragma data_seg(pop)\n\n";
|
|
}
|
|
}
|
|
|
|
std::string RewriteObjC::SynthesizeBlockFunc(BlockExpr *CE, int i,
|
|
const char *funcName,
|
|
std::string Tag) {
|
|
const FunctionType *AFT = CE->getFunctionType();
|
|
QualType RT = AFT->getResultType();
|
|
std::string StructRef = "struct " + Tag;
|
|
std::string S = "static " + RT.getAsString() + " __" +
|
|
funcName + "_" + "block_func_" + utostr(i);
|
|
|
|
BlockDecl *BD = CE->getBlockDecl();
|
|
|
|
if (isa<FunctionTypeNoProto>(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 FunctionTypeProto *FT = cast<FunctionTypeProto>(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();
|
|
(*AI)->getType().getAsStringInternal(ParamStr);
|
|
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 (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
|
|
E = BlockByRefDecls.end(); I != E; ++I) {
|
|
S += " ";
|
|
std::string Name = (*I)->getNameAsString();
|
|
Context->getPointerType((*I)->getType()).getAsStringInternal(Name);
|
|
S += Name + " = __cself->" + (*I)->getNameAsString() + "; // bound by ref\n";
|
|
}
|
|
// Next, emit a declaration for all "by copy" declarations.
|
|
for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
|
|
E = BlockByCopyDecls.end(); I != E; ++I) {
|
|
S += " ";
|
|
std::string Name = (*I)->getNameAsString();
|
|
// 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()))
|
|
S += "struct __block_impl *";
|
|
else
|
|
(*I)->getType().getAsStringInternal(Name);
|
|
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 RewriteObjC::SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
|
|
const char *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 (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = ImportedBlockDecls.begin(),
|
|
E = ImportedBlockDecls.end(); I != E; ++I) {
|
|
S += "_Block_object_assign((void*)&dst->";
|
|
S += (*I)->getNameAsString();
|
|
S += ", (void*)src->";
|
|
S += (*I)->getNameAsString();
|
|
S += ", 3/*BLOCK_FIELD_IS_OBJECT*/);}";
|
|
}
|
|
S += "\nstatic void __";
|
|
S += funcName;
|
|
S += "_block_dispose_" + utostr(i);
|
|
S += "(" + StructRef;
|
|
S += "*src) {";
|
|
for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = ImportedBlockDecls.begin(),
|
|
E = ImportedBlockDecls.end(); I != E; ++I) {
|
|
S += "_Block_object_dispose((void*)src->";
|
|
S += (*I)->getNameAsString();
|
|
S += ", 3/*BLOCK_FIELD_IS_OBJECT*/);";
|
|
}
|
|
S += "}\n";
|
|
return S;
|
|
}
|
|
|
|
std::string RewriteObjC::SynthesizeBlockImpl(BlockExpr *CE, std::string Tag,
|
|
bool hasCopyDisposeHelpers) {
|
|
std::string S = "\nstruct " + Tag;
|
|
std::string Constructor = " " + Tag;
|
|
|
|
S += " {\n struct __block_impl impl;\n";
|
|
|
|
if (hasCopyDisposeHelpers)
|
|
S += " void *copy;\n void *dispose;\n";
|
|
|
|
Constructor += "(void *fp";
|
|
|
|
if (hasCopyDisposeHelpers)
|
|
Constructor += ", void *copyHelp, void *disposeHelp";
|
|
|
|
if (BlockDeclRefs.size()) {
|
|
// Output all "by copy" declarations.
|
|
for (llvm::SmallPtrSet<ValueDecl*,8>::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 {
|
|
(*I)->getType().getAsStringInternal(FieldName);
|
|
(*I)->getType().getAsStringInternal(ArgName);
|
|
Constructor += ", " + ArgName;
|
|
}
|
|
S += FieldName + ";\n";
|
|
}
|
|
// Output all "by ref" declarations.
|
|
for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
|
|
E = BlockByRefDecls.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 {
|
|
Context->getPointerType((*I)->getType()).getAsStringInternal(FieldName);
|
|
Context->getPointerType((*I)->getType()).getAsStringInternal(ArgName);
|
|
Constructor += ", " + ArgName;
|
|
}
|
|
S += FieldName + "; // by ref\n";
|
|
}
|
|
// Finish writing the constructor.
|
|
// FIXME: handle NSConcreteGlobalBlock.
|
|
Constructor += ", int flags=0) {\n";
|
|
Constructor += " impl.isa = 0/*&_NSConcreteStackBlock*/;\n impl.Size = sizeof(";
|
|
Constructor += Tag + ");\n impl.Flags = flags;\n impl.FuncPtr = fp;\n";
|
|
|
|
if (hasCopyDisposeHelpers)
|
|
Constructor += " copy = copyHelp;\n dispose = disposeHelp;\n";
|
|
|
|
// Initialize all "by copy" arguments.
|
|
for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
|
|
E = BlockByCopyDecls.end(); I != E; ++I) {
|
|
std::string Name = (*I)->getNameAsString();
|
|
Constructor += " ";
|
|
if (isTopLevelBlockPointerType((*I)->getType()))
|
|
Constructor += Name + " = (struct __block_impl *)_";
|
|
else
|
|
Constructor += Name + " = _";
|
|
Constructor += Name + ";\n";
|
|
}
|
|
// Initialize all "by ref" arguments.
|
|
for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
|
|
E = BlockByRefDecls.end(); I != E; ++I) {
|
|
std::string Name = (*I)->getNameAsString();
|
|
Constructor += " ";
|
|
if (isTopLevelBlockPointerType((*I)->getType()))
|
|
Constructor += Name + " = (struct __block_impl *)_";
|
|
else
|
|
Constructor += Name + " = _";
|
|
Constructor += Name + ";\n";
|
|
}
|
|
} else {
|
|
// Finish writing the constructor.
|
|
// FIXME: handle NSConcreteGlobalBlock.
|
|
Constructor += ", int flags=0) {\n";
|
|
Constructor += " impl.isa = 0/*&_NSConcreteStackBlock*/;\n impl.Size = sizeof(";
|
|
Constructor += Tag + ");\n impl.Flags = flags;\n impl.FuncPtr = fp;\n";
|
|
if (hasCopyDisposeHelpers)
|
|
Constructor += " copy = copyHelp;\n dispose = disposeHelp;\n";
|
|
}
|
|
Constructor += " ";
|
|
Constructor += "}\n";
|
|
S += Constructor;
|
|
S += "};\n";
|
|
return S;
|
|
}
|
|
|
|
void RewriteObjC::SynthesizeBlockLiterals(SourceLocation FunLocStart,
|
|
const char *FunName) {
|
|
// Insert closures that were part of the function.
|
|
for (unsigned i = 0; i < Blocks.size(); i++) {
|
|
|
|
CollectBlockDeclRefInfo(Blocks[i]);
|
|
|
|
std::string Tag = "__" + std::string(FunName) + "_block_impl_" + utostr(i);
|
|
|
|
std::string CI = SynthesizeBlockImpl(Blocks[i], Tag,
|
|
ImportedBlockDecls.size() > 0);
|
|
|
|
InsertText(FunLocStart, CI.c_str(), CI.size());
|
|
|
|
std::string CF = SynthesizeBlockFunc(Blocks[i], i, FunName, Tag);
|
|
|
|
InsertText(FunLocStart, CF.c_str(), CF.size());
|
|
|
|
if (ImportedBlockDecls.size()) {
|
|
std::string HF = SynthesizeBlockHelperFuncs(Blocks[i], i, FunName, Tag);
|
|
InsertText(FunLocStart, HF.c_str(), HF.size());
|
|
}
|
|
|
|
BlockDeclRefs.clear();
|
|
BlockByRefDecls.clear();
|
|
BlockByCopyDecls.clear();
|
|
BlockCallExprs.clear();
|
|
ImportedBlockDecls.clear();
|
|
}
|
|
Blocks.clear();
|
|
RewrittenBlockExprs.clear();
|
|
}
|
|
|
|
void RewriteObjC::InsertBlockLiteralsWithinFunction(FunctionDecl *FD) {
|
|
SourceLocation FunLocStart = FD->getTypeSpecStartLoc();
|
|
const char *FuncName = FD->getNameAsCString();
|
|
|
|
SynthesizeBlockLiterals(FunLocStart, FuncName);
|
|
}
|
|
|
|
void RewriteObjC::InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD) {
|
|
//fprintf(stderr,"In InsertBlockLiteralsWitinMethod\n");
|
|
//SourceLocation FunLocStart = MD->getLocStart();
|
|
// FIXME: This hack works around a bug in Rewrite.InsertText().
|
|
SourceLocation FunLocStart = MD->getLocStart().getFileLocWithOffset(-1);
|
|
std::string FuncName = MD->getSelector().getAsString();
|
|
// Convert colons to underscores.
|
|
std::string::size_type loc = 0;
|
|
while ((loc = FuncName.find(":", loc)) != std::string::npos)
|
|
FuncName.replace(loc, 1, "_");
|
|
|
|
SynthesizeBlockLiterals(FunLocStart, FuncName.c_str());
|
|
}
|
|
|
|
void RewriteObjC::GetBlockDeclRefExprs(Stmt *S) {
|
|
for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
|
|
CI != E; ++CI)
|
|
if (*CI) {
|
|
if (BlockExpr *CBE = dyn_cast<BlockExpr>(*CI))
|
|
GetBlockDeclRefExprs(CBE->getBody());
|
|
else
|
|
GetBlockDeclRefExprs(*CI);
|
|
}
|
|
// Handle specific things.
|
|
if (BlockDeclRefExpr *CDRE = dyn_cast<BlockDeclRefExpr>(S))
|
|
// FIXME: Handle enums.
|
|
if (!isa<FunctionDecl>(CDRE->getDecl()))
|
|
BlockDeclRefs.push_back(CDRE);
|
|
return;
|
|
}
|
|
|
|
void RewriteObjC::GetBlockCallExprs(Stmt *S) {
|
|
for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
|
|
CI != E; ++CI)
|
|
if (*CI) {
|
|
if (BlockExpr *CBE = dyn_cast<BlockExpr>(*CI))
|
|
GetBlockCallExprs(CBE->getBody());
|
|
else
|
|
GetBlockCallExprs(*CI);
|
|
}
|
|
|
|
if (CallExpr *CE = dyn_cast<CallExpr>(S)) {
|
|
if (CE->getCallee()->getType()->isBlockPointerType()) {
|
|
BlockCallExprs[dyn_cast<BlockDeclRefExpr>(CE->getCallee())] = CE;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
Stmt *RewriteObjC::SynthesizeBlockCall(CallExpr *Exp) {
|
|
// Navigate to relevant type information.
|
|
const char *closureName = 0;
|
|
const BlockPointerType *CPT = 0;
|
|
|
|
if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Exp->getCallee())) {
|
|
closureName = DRE->getDecl()->getNameAsCString();
|
|
CPT = DRE->getType()->getAsBlockPointerType();
|
|
} else if (BlockDeclRefExpr *CDRE = dyn_cast<BlockDeclRefExpr>(Exp->getCallee())) {
|
|
closureName = CDRE->getDecl()->getNameAsCString();
|
|
CPT = CDRE->getType()->getAsBlockPointerType();
|
|
} else if (MemberExpr *MExpr = dyn_cast<MemberExpr>(Exp->getCallee())) {
|
|
closureName = MExpr->getMemberDecl()->getNameAsCString();
|
|
CPT = MExpr->getType()->getAsBlockPointerType();
|
|
} else {
|
|
assert(1 && "RewriteBlockClass: Bad type");
|
|
}
|
|
assert(CPT && "RewriteBlockClass: Bad type");
|
|
const FunctionType *FT = CPT->getPointeeType()->getAsFunctionType();
|
|
assert(FT && "RewriteBlockClass: Bad type");
|
|
const FunctionTypeProto *FTP = dyn_cast<FunctionTypeProto>(FT);
|
|
// FTP will be null for closures that don't take arguments.
|
|
|
|
RecordDecl *RD = RecordDecl::Create(*Context, TagDecl::TK_struct, TUDecl,
|
|
SourceLocation(),
|
|
&Context->Idents.get("__block_impl"));
|
|
QualType PtrBlock = Context->getPointerType(Context->getTagDeclType(RD));
|
|
|
|
// Generate a funky cast.
|
|
llvm::SmallVector<QualType, 8> ArgTypes;
|
|
|
|
// Push the block argument type.
|
|
ArgTypes.push_back(PtrBlock);
|
|
if (FTP) {
|
|
for (FunctionTypeProto::arg_type_iterator I = FTP->arg_type_begin(),
|
|
E = FTP->arg_type_end(); I && (I != E); ++I) {
|
|
QualType t = *I;
|
|
// Make sure we convert "t (^)(...)" to "t (*)(...)".
|
|
if (isTopLevelBlockPointerType(t)) {
|
|
const BlockPointerType *BPT = t->getAsBlockPointerType();
|
|
t = Context->getPointerType(BPT->getPointeeType());
|
|
}
|
|
ArgTypes.push_back(t);
|
|
}
|
|
}
|
|
// Now do the pointer to function cast.
|
|
QualType PtrToFuncCastType = Context->getFunctionType(Exp->getType(),
|
|
&ArgTypes[0], ArgTypes.size(), false/*no variadic*/, 0);
|
|
|
|
PtrToFuncCastType = Context->getPointerType(PtrToFuncCastType);
|
|
|
|
CastExpr *BlkCast = new (Context) CStyleCastExpr(PtrBlock, Exp->getCallee(),
|
|
PtrBlock, SourceLocation(),
|
|
SourceLocation());
|
|
// 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, 0, SourceLocation(),
|
|
&Context->Idents.get("FuncPtr"), Context->VoidPtrTy,
|
|
/*BitWidth=*/0, /*Mutable=*/true);
|
|
MemberExpr *ME = new (Context) MemberExpr(PE, true, FD, SourceLocation(),
|
|
FD->getType());
|
|
|
|
CastExpr *FunkCast = new (Context) CStyleCastExpr(PtrToFuncCastType, ME,
|
|
PtrToFuncCastType,
|
|
SourceLocation(),
|
|
SourceLocation());
|
|
PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), FunkCast);
|
|
|
|
llvm::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 = new (Context) CallExpr(*Context, PE, &BlkExprs[0],
|
|
BlkExprs.size(),
|
|
Exp->getType(), SourceLocation());
|
|
return CE;
|
|
}
|
|
|
|
void RewriteObjC::RewriteBlockCall(CallExpr *Exp) {
|
|
Stmt *BlockCall = SynthesizeBlockCall(Exp);
|
|
ReplaceStmt(Exp, BlockCall);
|
|
}
|
|
|
|
void RewriteObjC::RewriteBlockDeclRefExpr(BlockDeclRefExpr *BDRE) {
|
|
// FIXME: Add more elaborate code generation required by the ABI.
|
|
Expr *DerefExpr = new (Context) UnaryOperator(BDRE, UnaryOperator::Deref,
|
|
Context->getPointerType(BDRE->getType()),
|
|
SourceLocation());
|
|
// Need parens to enforce precedence.
|
|
ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), DerefExpr);
|
|
ReplaceStmt(BDRE, PE);
|
|
}
|
|
|
|
void RewriteObjC::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);
|
|
|
|
// advance the location to startArgList.
|
|
const char *argPtr = startBuf;
|
|
|
|
while (*argPtr++ && (argPtr < endBuf)) {
|
|
switch (*argPtr) {
|
|
case '^':
|
|
// Replace the '^' with '*'.
|
|
LocStart = LocStart.getFileLocWithOffset(argPtr-startBuf);
|
|
ReplaceText(LocStart, 1, "*", 1);
|
|
break;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
void RewriteObjC::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.getFileLocWithOffset(startArgList-startBuf);
|
|
assert((DeclLoc.isValid()) && "Invalid DeclLoc");
|
|
|
|
const char *argPtr = startArgList;
|
|
|
|
while (*argPtr++ && parenCount) {
|
|
switch (*argPtr) {
|
|
case '^':
|
|
// Replace the '^' with '*'.
|
|
DeclLoc = DeclLoc.getFileLocWithOffset(argPtr-startArgList);
|
|
ReplaceText(DeclLoc, 1, "*", 1);
|
|
break;
|
|
case '(':
|
|
parenCount++;
|
|
break;
|
|
case ')':
|
|
parenCount--;
|
|
break;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
bool RewriteObjC::PointerTypeTakesAnyBlockArguments(QualType QT) {
|
|
const FunctionTypeProto *FTP;
|
|
const PointerType *PT = QT->getAsPointerType();
|
|
if (PT) {
|
|
FTP = PT->getPointeeType()->getAsFunctionTypeProto();
|
|
} else {
|
|
const BlockPointerType *BPT = QT->getAsBlockPointerType();
|
|
assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type");
|
|
FTP = BPT->getPointeeType()->getAsFunctionTypeProto();
|
|
}
|
|
if (FTP) {
|
|
for (FunctionTypeProto::arg_type_iterator I = FTP->arg_type_begin(),
|
|
E = FTP->arg_type_end(); I != E; ++I)
|
|
if (isTopLevelBlockPointerType(*I))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void RewriteObjC::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 RewriteObjC::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 (TypedefDecl *TDD = dyn_cast<TypedefDecl>(ND))
|
|
DeclT = TDD->getUnderlyingType();
|
|
else if (FieldDecl *FD = dyn_cast<FieldDecl>(ND))
|
|
DeclT = FD->getType();
|
|
else
|
|
assert(0 && "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--;
|
|
|
|
// *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.
|
|
DeclLoc = DeclLoc.getFileLocWithOffset(startBuf-endBuf);
|
|
ReplaceText(DeclLoc, 1, "*", 1);
|
|
}
|
|
if (PointerTypeTakesAnyBlockArguments(DeclT)) {
|
|
// Replace the '^' with '*' for arguments.
|
|
DeclLoc = ND->getLocation();
|
|
startBuf = SM->getCharacterData(DeclLoc);
|
|
const char *argListBegin, *argListEnd;
|
|
GetExtentOfArgList(startBuf, argListBegin, argListEnd);
|
|
while (argListBegin < argListEnd) {
|
|
if (*argListBegin == '^') {
|
|
SourceLocation CaretLoc = DeclLoc.getFileLocWithOffset(argListBegin-startBuf);
|
|
ReplaceText(CaretLoc, 1, "*", 1);
|
|
}
|
|
argListBegin++;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
void RewriteObjC::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]->isByRef())
|
|
BlockByCopyDecls.insert(BlockDeclRefs[i]->getDecl());
|
|
// Unique all "by ref" declarations.
|
|
for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
|
|
if (BlockDeclRefs[i]->isByRef()) {
|
|
BlockByRefDecls.insert(BlockDeclRefs[i]->getDecl());
|
|
}
|
|
// Find any imported blocks...they will need special attention.
|
|
for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
|
|
if (BlockDeclRefs[i]->getType()->isBlockPointerType()) {
|
|
GetBlockCallExprs(BlockDeclRefs[i]);
|
|
ImportedBlockDecls.insert(BlockDeclRefs[i]->getDecl());
|
|
}
|
|
}
|
|
}
|
|
|
|
FunctionDecl *RewriteObjC::SynthBlockInitFunctionDecl(const char *name) {
|
|
IdentifierInfo *ID = &Context->Idents.get(name);
|
|
QualType FType = Context->getFunctionTypeNoProto(Context->VoidPtrTy);
|
|
return FunctionDecl::Create(*Context, TUDecl,SourceLocation(),
|
|
ID, FType, FunctionDecl::Extern, false);
|
|
}
|
|
|
|
Stmt *RewriteObjC::SynthBlockInitExpr(BlockExpr *Exp) {
|
|
Blocks.push_back(Exp);
|
|
|
|
CollectBlockDeclRefInfo(Exp);
|
|
std::string FuncName;
|
|
|
|
if (CurFunctionDef)
|
|
FuncName = CurFunctionDef->getNameAsString();
|
|
else if (CurMethodDef) {
|
|
FuncName = CurMethodDef->getSelector().getAsString();
|
|
// Convert colons to underscores.
|
|
std::string::size_type loc = 0;
|
|
while ((loc = FuncName.find(":", loc)) != std::string::npos)
|
|
FuncName.replace(loc, 1, "_");
|
|
} else if (GlobalVarDecl)
|
|
FuncName = std::string(GlobalVarDecl->getNameAsString());
|
|
|
|
std::string BlockNumber = utostr(Blocks.size()-1);
|
|
|
|
std::string Tag = "__" + FuncName + "_block_impl_" + BlockNumber;
|
|
std::string Func = "__" + FuncName + "_block_func_" + BlockNumber;
|
|
|
|
// Get a pointer to the function type so we can cast appropriately.
|
|
QualType FType = Context->getPointerType(QualType(Exp->getFunctionType(),0));
|
|
|
|
FunctionDecl *FD;
|
|
Expr *NewRep;
|
|
|
|
// Simulate a contructor call...
|
|
FD = SynthBlockInitFunctionDecl(Tag.c_str());
|
|
DeclRefExpr *DRE = new (Context) DeclRefExpr(FD, FType, SourceLocation());
|
|
|
|
llvm::SmallVector<Expr*, 4> InitExprs;
|
|
|
|
// Initialize the block function.
|
|
FD = SynthBlockInitFunctionDecl(Func.c_str());
|
|
DeclRefExpr *Arg = new (Context) DeclRefExpr(FD, FD->getType(),
|
|
SourceLocation());
|
|
CastExpr *castExpr = new (Context) CStyleCastExpr(Context->VoidPtrTy, Arg,
|
|
Context->VoidPtrTy, SourceLocation(),
|
|
SourceLocation());
|
|
InitExprs.push_back(castExpr);
|
|
|
|
if (ImportedBlockDecls.size()) {
|
|
std::string Buf = "__" + FuncName + "_block_copy_" + BlockNumber;
|
|
FD = SynthBlockInitFunctionDecl(Buf.c_str());
|
|
Arg = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
|
|
castExpr = new (Context) CStyleCastExpr(Context->VoidPtrTy, Arg,
|
|
Context->VoidPtrTy, SourceLocation(),
|
|
SourceLocation());
|
|
InitExprs.push_back(castExpr);
|
|
|
|
Buf = "__" + FuncName + "_block_dispose_" + BlockNumber;
|
|
FD = SynthBlockInitFunctionDecl(Buf.c_str());
|
|
Arg = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
|
|
castExpr = new (Context) CStyleCastExpr(Context->VoidPtrTy, Arg,
|
|
Context->VoidPtrTy, SourceLocation(),
|
|
SourceLocation());
|
|
InitExprs.push_back(castExpr);
|
|
}
|
|
// Add initializers for any closure decl refs.
|
|
if (BlockDeclRefs.size()) {
|
|
Expr *Exp;
|
|
// Output all "by copy" declarations.
|
|
for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByCopyDecls.begin(),
|
|
E = BlockByCopyDecls.end(); I != E; ++I) {
|
|
if (isObjCType((*I)->getType())) {
|
|
// FIXME: Conform to ABI ([[obj retain] autorelease]).
|
|
FD = SynthBlockInitFunctionDecl((*I)->getNameAsCString());
|
|
Exp = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
|
|
} else if (isTopLevelBlockPointerType((*I)->getType())) {
|
|
FD = SynthBlockInitFunctionDecl((*I)->getNameAsCString());
|
|
Arg = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
|
|
Exp = new (Context) CStyleCastExpr(Context->VoidPtrTy, Arg,
|
|
Context->VoidPtrTy, SourceLocation(),
|
|
SourceLocation());
|
|
} else {
|
|
FD = SynthBlockInitFunctionDecl((*I)->getNameAsCString());
|
|
Exp = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
|
|
}
|
|
InitExprs.push_back(Exp);
|
|
}
|
|
// Output all "by ref" declarations.
|
|
for (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = BlockByRefDecls.begin(),
|
|
E = BlockByRefDecls.end(); I != E; ++I) {
|
|
FD = SynthBlockInitFunctionDecl((*I)->getNameAsCString());
|
|
Exp = new (Context) DeclRefExpr(FD, FD->getType(), SourceLocation());
|
|
Exp = new (Context) UnaryOperator(Exp, UnaryOperator::AddrOf,
|
|
Context->getPointerType(Exp->getType()),
|
|
SourceLocation());
|
|
InitExprs.push_back(Exp);
|
|
}
|
|
}
|
|
NewRep = new (Context) CallExpr(*Context, DRE, &InitExprs[0], InitExprs.size(),
|
|
FType, SourceLocation());
|
|
NewRep = new (Context) UnaryOperator(NewRep, UnaryOperator::AddrOf,
|
|
Context->getPointerType(NewRep->getType()),
|
|
SourceLocation());
|
|
NewRep = new (Context) CStyleCastExpr(FType, NewRep, FType, SourceLocation(),
|
|
SourceLocation());
|
|
BlockDeclRefs.clear();
|
|
BlockByRefDecls.clear();
|
|
BlockByCopyDecls.clear();
|
|
ImportedBlockDecls.clear();
|
|
return NewRep;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Function Body / Expression rewriting
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// This is run as a first "pass" prior to RewriteFunctionBodyOrGlobalInitializer().
|
|
// The allows the main rewrite loop to associate all ObjCPropertyRefExprs with
|
|
// their respective BinaryOperator. Without this knowledge, we'd need to rewrite
|
|
// the ObjCPropertyRefExpr twice (once as a getter, and later as a setter).
|
|
// Since the rewriter isn't capable of rewriting rewritten code, it's important
|
|
// we get this right.
|
|
void RewriteObjC::CollectPropertySetters(Stmt *S) {
|
|
// Perform a bottom up traversal of all children.
|
|
for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
|
|
CI != E; ++CI)
|
|
if (*CI)
|
|
CollectPropertySetters(*CI);
|
|
|
|
if (BinaryOperator *BinOp = dyn_cast<BinaryOperator>(S)) {
|
|
if (BinOp->isAssignmentOp()) {
|
|
if (ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(BinOp->getLHS()))
|
|
PropSetters[PRE] = BinOp;
|
|
}
|
|
}
|
|
}
|
|
|
|
Stmt *RewriteObjC::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);
|
|
}
|
|
|
|
SourceRange OrigStmtRange = S->getSourceRange();
|
|
|
|
// Perform a bottom up rewrite of all children.
|
|
for (Stmt::child_iterator CI = S->child_begin(), E = S->child_end();
|
|
CI != E; ++CI)
|
|
if (*CI) {
|
|
Stmt *newStmt = RewriteFunctionBodyOrGlobalInitializer(*CI);
|
|
if (newStmt)
|
|
*CI = newStmt;
|
|
}
|
|
|
|
if (BlockExpr *BE = dyn_cast<BlockExpr>(S)) {
|
|
// Rewrite the block body in place.
|
|
RewriteFunctionBodyOrGlobalInitializer(BE->getBody());
|
|
|
|
// Now we snarf the rewritten text and stash it away for later use.
|
|
std::string Str = Rewrite.getRewritenText(BE->getSourceRange());
|
|
RewrittenBlockExprs[BE] = Str;
|
|
|
|
Stmt *blockTranscribed = SynthBlockInitExpr(BE);
|
|
//blockTranscribed->dump();
|
|
ReplaceStmt(S, blockTranscribed);
|
|
return blockTranscribed;
|
|
}
|
|
// Handle specific things.
|
|
if (ObjCEncodeExpr *AtEncode = dyn_cast<ObjCEncodeExpr>(S))
|
|
return RewriteAtEncode(AtEncode);
|
|
|
|
if (ObjCIvarRefExpr *IvarRefExpr = dyn_cast<ObjCIvarRefExpr>(S))
|
|
return RewriteObjCIvarRefExpr(IvarRefExpr, OrigStmtRange.getBegin());
|
|
|
|
if (ObjCPropertyRefExpr *PropRefExpr = dyn_cast<ObjCPropertyRefExpr>(S)) {
|
|
BinaryOperator *BinOp = PropSetters[PropRefExpr];
|
|
if (BinOp) {
|
|
// Because the rewriter doesn't allow us to rewrite rewritten code,
|
|
// we need to rewrite the right hand side prior to rewriting the setter.
|
|
DisableReplaceStmt = true;
|
|
// Save the source range. Even if we disable the replacement, the
|
|
// rewritten node will have been inserted into the tree. If the synthesized
|
|
// node is at the 'end', the rewriter will fail. Consider this:
|
|
// self.errorHandler = handler ? handler :
|
|
// ^(NSURL *errorURL, NSError *error) { return (BOOL)1; };
|
|
SourceRange SrcRange = BinOp->getSourceRange();
|
|
Stmt *newStmt = RewriteFunctionBodyOrGlobalInitializer(BinOp->getRHS());
|
|
DisableReplaceStmt = false;
|
|
//
|
|
// Unlike the main iterator, we explicily avoid changing 'BinOp'. If
|
|
// we changed the RHS of BinOp, the rewriter would fail (since it needs
|
|
// to see the original expression). Consider this example:
|
|
//
|
|
// Foo *obj1, *obj2;
|
|
//
|
|
// obj1.i = [obj2 rrrr];
|
|
//
|
|
// 'BinOp' for the previous expression looks like:
|
|
//
|
|
// (BinaryOperator 0x231ccf0 'int' '='
|
|
// (ObjCPropertyRefExpr 0x231cc70 'int' Kind=PropertyRef Property="i"
|
|
// (DeclRefExpr 0x231cc50 'Foo *' Var='obj1' 0x231cbb0))
|
|
// (ObjCMessageExpr 0x231ccb0 'int' selector=rrrr
|
|
// (DeclRefExpr 0x231cc90 'Foo *' Var='obj2' 0x231cbe0)))
|
|
//
|
|
// 'newStmt' represents the rewritten message expression. For example:
|
|
//
|
|
// (CallExpr 0x231d300 'id':'struct objc_object *'
|
|
// (ParenExpr 0x231d2e0 'int (*)(id, SEL)'
|
|
// (CStyleCastExpr 0x231d2c0 'int (*)(id, SEL)'
|
|
// (CStyleCastExpr 0x231d220 'void *'
|
|
// (DeclRefExpr 0x231d200 'id (id, SEL, ...)' FunctionDecl='objc_msgSend' 0x231cdc0))))
|
|
//
|
|
// Note that 'newStmt' is passed to RewritePropertySetter so that it
|
|
// can be used as the setter argument. ReplaceStmt() will still 'see'
|
|
// the original RHS (since we haven't altered BinOp).
|
|
//
|
|
// This implies the Rewrite* routines can no longer delete the original
|
|
// node. As a result, we now leak the original AST nodes.
|
|
//
|
|
return RewritePropertySetter(BinOp, dyn_cast<Expr>(newStmt), SrcRange);
|
|
} else {
|
|
return RewritePropertyGetter(PropRefExpr);
|
|
}
|
|
}
|
|
if (ObjCSelectorExpr *AtSelector = dyn_cast<ObjCSelectorExpr>(S))
|
|
return RewriteAtSelector(AtSelector);
|
|
|
|
if (ObjCStringLiteral *AtString = dyn_cast<ObjCStringLiteral>(S))
|
|
return RewriteObjCStringLiteral(AtString);
|
|
|
|
if (ObjCMessageExpr *MessExpr = dyn_cast<ObjCMessageExpr>(S)) {
|
|
#if 0
|
|
// Before we rewrite it, put the original message expression in a comment.
|
|
SourceLocation startLoc = MessExpr->getLocStart();
|
|
SourceLocation endLoc = MessExpr->getLocEnd();
|
|
|
|
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.c_str(), messString.size());
|
|
// Tried this, but it didn't work either...
|
|
// ReplaceText(startLoc, 0, messString.c_str(), messString.size());
|
|
#endif
|
|
return RewriteMessageExpr(MessExpr);
|
|
}
|
|
|
|
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.
|
|
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 (TypedefDecl *TD = dyn_cast<TypedefDecl>(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 (BlockDeclRefExpr *BDRE = dyn_cast<BlockDeclRefExpr>(S)) {
|
|
if (BDRE->isByRef())
|
|
RewriteBlockDeclRefExpr(BDRE);
|
|
}
|
|
if (CallExpr *CE = dyn_cast<CallExpr>(S)) {
|
|
if (CE->getCallee()->getType()->isBlockPointerType()) {
|
|
Stmt *BlockCall = SynthesizeBlockCall(CE);
|
|
ReplaceStmt(S, BlockCall);
|
|
return BlockCall;
|
|
}
|
|
}
|
|
if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S)) {
|
|
RewriteCastExpr(CE);
|
|
}
|
|
#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()->getLocStart(), &Str[0], Str.size());
|
|
delete S;
|
|
return Replacement;
|
|
}
|
|
#endif
|
|
// Return this stmt unmodified.
|
|
return S;
|
|
}
|
|
|
|
/// HandleDeclInMainFile - This is called for each top-level decl defined in the
|
|
/// main file of the input.
|
|
void RewriteObjC::HandleDeclInMainFile(Decl *D) {
|
|
if (FunctionDecl *FD = dyn_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.
|
|
RewriteBlocksInFunctionTypeProto(FD->getType(), FD);
|
|
|
|
if (Stmt *Body = FD->getBody()) {
|
|
CurFunctionDef = FD;
|
|
CollectPropertySetters(Body);
|
|
CurrentBody = Body;
|
|
FD->setBody(RewriteFunctionBodyOrGlobalInitializer(Body));
|
|
CurrentBody = 0;
|
|
if (PropParentMap) {
|
|
delete PropParentMap;
|
|
PropParentMap = 0;
|
|
}
|
|
// This synthesizes and inserts the block "impl" struct, invoke function,
|
|
// and any copy/dispose helper functions.
|
|
InsertBlockLiteralsWithinFunction(FD);
|
|
CurFunctionDef = 0;
|
|
}
|
|
return;
|
|
}
|
|
if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) {
|
|
if (Stmt *Body = MD->getBody()) {
|
|
CurMethodDef = MD;
|
|
CollectPropertySetters(Body);
|
|
CurrentBody = Body;
|
|
MD->setBody(RewriteFunctionBodyOrGlobalInitializer(Body));
|
|
CurrentBody = 0;
|
|
if (PropParentMap) {
|
|
delete PropParentMap;
|
|
PropParentMap = 0;
|
|
}
|
|
InsertBlockLiteralsWithinMethod(MD);
|
|
CurMethodDef = 0;
|
|
}
|
|
}
|
|
if (ObjCImplementationDecl *CI = dyn_cast<ObjCImplementationDecl>(D))
|
|
ClassImplementation.push_back(CI);
|
|
else if (ObjCCategoryImplDecl *CI = dyn_cast<ObjCCategoryImplDecl>(D))
|
|
CategoryImplementation.push_back(CI);
|
|
else if (ObjCClassDecl *CD = dyn_cast<ObjCClassDecl>(D))
|
|
RewriteForwardClassDecl(CD);
|
|
else if (VarDecl *VD = dyn_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);
|
|
}
|
|
}
|
|
}
|
|
if (VD->getInit()) {
|
|
GlobalVarDecl = VD;
|
|
CollectPropertySetters(VD->getInit());
|
|
CurrentBody = VD->getInit();
|
|
RewriteFunctionBodyOrGlobalInitializer(VD->getInit());
|
|
CurrentBody = 0;
|
|
if (PropParentMap) {
|
|
delete PropParentMap;
|
|
PropParentMap = 0;
|
|
}
|
|
SynthesizeBlockLiterals(VD->getTypeSpecStartLoc(),
|
|
VD->getNameAsCString());
|
|
GlobalVarDecl = 0;
|
|
|
|
// This is needed for blocks.
|
|
if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
|
|
RewriteCastExpr(CE);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) {
|
|
if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
|
|
RewriteBlockPointerDecl(TD);
|
|
else if (TD->getUnderlyingType()->isFunctionPointerType())
|
|
CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
|
|
return;
|
|
}
|
|
if (RecordDecl *RD = dyn_cast<RecordDecl>(D)) {
|
|
if (RD->isDefinition()) {
|
|
for (RecordDecl::field_iterator i = RD->field_begin(),
|
|
e = RD->field_end(); i != e; ++i) {
|
|
FieldDecl *FD = *i;
|
|
if (isTopLevelBlockPointerType(FD->getType()))
|
|
RewriteBlockPointerDecl(FD);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
// Nothing yet.
|
|
}
|
|
|
|
void RewriteObjC::HandleTranslationUnit(TranslationUnit& TU) {
|
|
// Get the top-level buffer that this corresponds to.
|
|
|
|
// Rewrite tabs if we care.
|
|
//RewriteTabs();
|
|
|
|
if (Diags.hasErrorOccurred())
|
|
return;
|
|
|
|
// Create the output file.
|
|
|
|
llvm::OwningPtr<llvm::raw_ostream> OwnedStream;
|
|
llvm::raw_ostream *OutFile;
|
|
if (OutFileName == "-") {
|
|
OutFile = &llvm::outs();
|
|
} else if (!OutFileName.empty()) {
|
|
std::string Err;
|
|
OutFile = new llvm::raw_fd_ostream(OutFileName.c_str(),
|
|
// set binary mode (critical for Windoze)
|
|
true,
|
|
Err);
|
|
OwnedStream.reset(OutFile);
|
|
} else if (InFileName == "-") {
|
|
OutFile = &llvm::outs();
|
|
} else {
|
|
llvm::sys::Path Path(InFileName);
|
|
Path.eraseSuffix();
|
|
Path.appendSuffix("cpp");
|
|
std::string Err;
|
|
OutFile = new llvm::raw_fd_ostream(Path.toString().c_str(),
|
|
// set binary mode (critical for Windoze)
|
|
true,
|
|
Err);
|
|
OwnedStream.reset(OutFile);
|
|
}
|
|
|
|
RewriteInclude();
|
|
|
|
InsertText(SM->getLocForStartOfFile(MainFileID),
|
|
Preamble.c_str(), Preamble.size(), false);
|
|
|
|
if (ClassImplementation.size() || CategoryImplementation.size())
|
|
RewriteImplementations();
|
|
|
|
// 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 {
|
|
fprintf(stderr, "No changes\n");
|
|
}
|
|
|
|
if (ClassImplementation.size() || CategoryImplementation.size()) {
|
|
// Rewrite Objective-c meta data*
|
|
std::string ResultStr;
|
|
SynthesizeMetaDataIntoBuffer(ResultStr);
|
|
// Emit metadata.
|
|
*OutFile << ResultStr;
|
|
}
|
|
OutFile->flush();
|
|
}
|
|
|