forked from OSchip/llvm-project
841 lines
28 KiB
C++
841 lines
28 KiB
C++
//===--- Mangle.cpp - Mangle C++ Names --------------------------*- C++ -*-===//
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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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// Implements C++ name mangling according to the Itanium C++ ABI,
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// which is used in GCC 3.2 and newer (and many compilers that are
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// ABI-compatible with GCC):
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//
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// http://www.codesourcery.com/public/cxx-abi/abi.html
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//
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//===----------------------------------------------------------------------===//
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#include "Mangle.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/AST/DeclTemplate.h"
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#include "clang/Basic/SourceManager.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace clang;
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namespace {
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class VISIBILITY_HIDDEN CXXNameMangler {
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ASTContext &Context;
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llvm::raw_ostream &Out;
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const CXXMethodDecl *Structor;
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unsigned StructorType;
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CXXCtorType CtorType;
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public:
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CXXNameMangler(ASTContext &C, llvm::raw_ostream &os)
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: Context(C), Out(os), Structor(0), StructorType(0) { }
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bool mangle(const NamedDecl *D);
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void mangleGuardVariable(const VarDecl *D);
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void mangleCXXVtable(QualType Type);
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void mangleCXXRtti(QualType Type);
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void mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type);
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void mangleCXXDtor(const CXXDestructorDecl *D, CXXDtorType Type);
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private:
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bool mangleFunctionDecl(const FunctionDecl *FD);
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void mangleFunctionEncoding(const FunctionDecl *FD);
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void mangleName(const NamedDecl *ND);
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void mangleUnqualifiedName(const NamedDecl *ND);
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void mangleSourceName(const IdentifierInfo *II);
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void mangleLocalName(const NamedDecl *ND);
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void mangleNestedName(const NamedDecl *ND);
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void manglePrefix(const DeclContext *DC);
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void mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity);
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void mangleCVQualifiers(unsigned Quals);
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void mangleType(QualType T);
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void mangleType(const BuiltinType *T);
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void mangleType(const FunctionType *T);
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void mangleBareFunctionType(const FunctionType *T, bool MangleReturnType);
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void mangleType(const TagType *T);
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void mangleType(const ArrayType *T);
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void mangleType(const MemberPointerType *T);
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void mangleType(const TemplateTypeParmType *T);
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void mangleType(const ObjCInterfaceType *T);
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void mangleExpression(Expr *E);
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void mangleCXXCtorType(CXXCtorType T);
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void mangleCXXDtorType(CXXDtorType T);
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void mangleTemplateArgumentList(const TemplateArgumentList &L);
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void mangleTemplateArgument(const TemplateArgument &A);
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};
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}
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static bool isInCLinkageSpecification(const Decl *D) {
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for (const DeclContext *DC = D->getDeclContext();
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!DC->isTranslationUnit(); DC = DC->getParent()) {
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if (const LinkageSpecDecl *Linkage = dyn_cast<LinkageSpecDecl>(DC))
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return Linkage->getLanguage() == LinkageSpecDecl::lang_c;
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}
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return false;
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}
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bool CXXNameMangler::mangleFunctionDecl(const FunctionDecl *FD) {
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// Clang's "overloadable" attribute extension to C/C++ implies
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// name mangling (always).
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if (!FD->hasAttr<OverloadableAttr>()) {
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// C functions are not mangled, and "main" is never mangled.
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if (!Context.getLangOptions().CPlusPlus || FD->isMain())
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return false;
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// No mangling in an "implicit extern C" header.
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if (FD->getLocation().isValid() &&
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Context.getSourceManager().isInExternCSystemHeader(FD->getLocation()))
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return false;
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// No name mangling in a C linkage specification.
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if (isInCLinkageSpecification(FD))
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return false;
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}
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// If we get here, mangle the decl name!
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Out << "_Z";
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mangleFunctionEncoding(FD);
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return true;
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}
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bool CXXNameMangler::mangle(const NamedDecl *D) {
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// Any decl can be declared with __asm("foo") on it, and this takes
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// precedence over all other naming in the .o file.
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if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) {
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// If we have an asm name, then we use it as the mangling.
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Out << '\01'; // LLVM IR Marker for __asm("foo")
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Out << ALA->getLabel();
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return true;
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}
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// <mangled-name> ::= _Z <encoding>
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// ::= <data name>
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// ::= <special-name>
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// FIXME: Actually use a visitor to decode these?
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if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
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return mangleFunctionDecl(FD);
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if (const VarDecl *VD = dyn_cast<VarDecl>(D)) {
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if (!Context.getLangOptions().CPlusPlus ||
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isInCLinkageSpecification(D) ||
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D->getDeclContext()->isTranslationUnit())
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return false;
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Out << "_Z";
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mangleName(VD);
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return true;
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}
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return false;
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}
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void CXXNameMangler::mangleCXXCtor(const CXXConstructorDecl *D,
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CXXCtorType Type) {
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assert(!Structor && "Structor already set!");
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Structor = D;
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StructorType = Type;
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mangle(D);
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}
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void CXXNameMangler::mangleCXXDtor(const CXXDestructorDecl *D,
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CXXDtorType Type) {
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assert(!Structor && "Structor already set!");
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Structor = D;
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StructorType = Type;
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mangle(D);
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}
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void CXXNameMangler::mangleCXXVtable(QualType T) {
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// <special-name> ::= TV <type> # virtual table
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Out << "_ZTV";
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mangleType(T);
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}
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void CXXNameMangler::mangleCXXRtti(QualType T) {
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// <special-name> ::= TI <type> # typeinfo structure
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Out << "_ZTI";
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mangleType(T);
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}
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void CXXNameMangler::mangleGuardVariable(const VarDecl *D)
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{
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// <special-name> ::= GV <object name> # Guard variable for one-time
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// # initialization
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Out << "_ZGV";
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mangleName(D);
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}
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void CXXNameMangler::mangleFunctionEncoding(const FunctionDecl *FD) {
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// <encoding> ::= <function name> <bare-function-type>
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mangleName(FD);
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// Whether the mangling of a function type includes the return type depends
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// on the context and the nature of the function. The rules for deciding
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// whether the return type is included are:
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//
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// 1. Template functions (names or types) have return types encoded, with
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// the exceptions listed below.
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// 2. Function types not appearing as part of a function name mangling,
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// e.g. parameters, pointer types, etc., have return type encoded, with the
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// exceptions listed below.
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// 3. Non-template function names do not have return types encoded.
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//
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// The exceptions mentioned in (1) and (2) above, for which the return
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// type is never included, are
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// 1. Constructors.
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// 2. Destructors.
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// 3. Conversion operator functions, e.g. operator int.
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bool MangleReturnType = false;
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if (FD->getPrimaryTemplate() &&
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!(isa<CXXConstructorDecl>(FD) || isa<CXXDestructorDecl>(FD) ||
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isa<CXXConversionDecl>(FD)))
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MangleReturnType = true;
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mangleBareFunctionType(FD->getType()->getAsFunctionType(), MangleReturnType);
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}
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static bool isStdNamespace(const DeclContext *DC) {
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if (!DC->isNamespace() || !DC->getParent()->isTranslationUnit())
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return false;
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const NamespaceDecl *NS = cast<NamespaceDecl>(DC);
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return NS->getOriginalNamespace()->getIdentifier()->isStr("std");
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}
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void CXXNameMangler::mangleName(const NamedDecl *ND) {
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// <name> ::= <nested-name>
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// ::= <unscoped-name>
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// ::= <unscoped-template-name> <template-args>
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// ::= <local-name> # See Scope Encoding below
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//
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// <unscoped-name> ::= <unqualified-name>
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// ::= St <unqualified-name> # ::std::
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if (ND->getDeclContext()->isTranslationUnit())
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mangleUnqualifiedName(ND);
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else if (isStdNamespace(ND->getDeclContext())) {
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Out << "St";
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mangleUnqualifiedName(ND);
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} else if (isa<FunctionDecl>(ND->getDeclContext()))
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mangleLocalName(ND);
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else
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mangleNestedName(ND);
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}
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void CXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND) {
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// <unqualified-name> ::= <operator-name>
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// ::= <ctor-dtor-name>
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// ::= <source-name>
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DeclarationName Name = ND->getDeclName();
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switch (Name.getNameKind()) {
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case DeclarationName::Identifier:
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mangleSourceName(Name.getAsIdentifierInfo());
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break;
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case DeclarationName::ObjCZeroArgSelector:
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case DeclarationName::ObjCOneArgSelector:
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case DeclarationName::ObjCMultiArgSelector:
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assert(false && "Can't mangle Objective-C selector names here!");
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break;
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case DeclarationName::CXXConstructorName:
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if (ND == Structor)
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// If the named decl is the C++ constructor we're mangling, use the
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// type we were given.
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mangleCXXCtorType(static_cast<CXXCtorType>(StructorType));
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else
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// Otherwise, use the complete constructor name. This is relevant if a
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// class with a constructor is declared within a constructor.
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mangleCXXCtorType(Ctor_Complete);
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break;
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case DeclarationName::CXXDestructorName:
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if (ND == Structor)
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// If the named decl is the C++ destructor we're mangling, use the
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// type we were given.
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mangleCXXDtorType(static_cast<CXXDtorType>(StructorType));
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else
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// Otherwise, use the complete destructor name. This is relevant if a
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// class with a destructor is declared within a destructor.
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mangleCXXDtorType(Dtor_Complete);
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break;
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case DeclarationName::CXXConversionFunctionName:
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// <operator-name> ::= cv <type> # (cast)
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Out << "cv";
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mangleType(Context.getCanonicalType(Name.getCXXNameType()));
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break;
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case DeclarationName::CXXOperatorName:
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mangleOperatorName(Name.getCXXOverloadedOperator(),
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cast<FunctionDecl>(ND)->getNumParams());
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break;
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case DeclarationName::CXXUsingDirective:
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assert(false && "Can't mangle a using directive name!");
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break;
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}
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if (const FunctionDecl *Function = dyn_cast<FunctionDecl>(ND)) {
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if (const TemplateArgumentList *TemplateArgs
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= Function->getTemplateSpecializationArgs())
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mangleTemplateArgumentList(*TemplateArgs);
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}
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}
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void CXXNameMangler::mangleSourceName(const IdentifierInfo *II) {
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// <source-name> ::= <positive length number> <identifier>
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// <number> ::= [n] <non-negative decimal integer>
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// <identifier> ::= <unqualified source code identifier>
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Out << II->getLength() << II->getName();
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}
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void CXXNameMangler::mangleNestedName(const NamedDecl *ND) {
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// <nested-name> ::= N [<CV-qualifiers>] <prefix> <unqualified-name> E
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// ::= N [<CV-qualifiers>] <template-prefix> <template-args> E
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// FIXME: no template support
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Out << 'N';
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if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(ND))
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mangleCVQualifiers(Method->getTypeQualifiers());
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manglePrefix(ND->getDeclContext());
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mangleUnqualifiedName(ND);
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Out << 'E';
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}
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void CXXNameMangler::mangleLocalName(const NamedDecl *ND) {
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// <local-name> := Z <function encoding> E <entity name> [<discriminator>]
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// := Z <function encoding> E s [<discriminator>]
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// <discriminator> := _ <non-negative number>
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Out << 'Z';
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mangleFunctionEncoding(cast<FunctionDecl>(ND->getDeclContext()));
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Out << 'E';
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mangleSourceName(ND->getIdentifier());
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}
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void CXXNameMangler::manglePrefix(const DeclContext *DC) {
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// <prefix> ::= <prefix> <unqualified-name>
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// ::= <template-prefix> <template-args>
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// ::= <template-param>
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// ::= # empty
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// ::= <substitution>
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// FIXME: We only handle mangling of namespaces and classes at the moment.
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if (!DC->getParent()->isTranslationUnit())
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manglePrefix(DC->getParent());
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if (const NamespaceDecl *Namespace = dyn_cast<NamespaceDecl>(DC))
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mangleSourceName(Namespace->getIdentifier());
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else if (const RecordDecl *Record = dyn_cast<RecordDecl>(DC)) {
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if (const ClassTemplateSpecializationDecl *D =
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dyn_cast<ClassTemplateSpecializationDecl>(Record)) {
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mangleType(QualType(D->getTypeForDecl(), 0));
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} else
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mangleSourceName(Record->getIdentifier());
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}
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}
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void
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CXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity) {
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switch (OO) {
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// <operator-name> ::= nw # new
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case OO_New: Out << "nw"; break;
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// ::= na # new[]
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case OO_Array_New: Out << "na"; break;
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// ::= dl # delete
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case OO_Delete: Out << "dl"; break;
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// ::= da # delete[]
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case OO_Array_Delete: Out << "da"; break;
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// ::= ps # + (unary)
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// ::= pl # +
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case OO_Plus: Out << (Arity == 1? "ps" : "pl"); break;
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// ::= ng # - (unary)
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// ::= mi # -
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case OO_Minus: Out << (Arity == 1? "ng" : "mi"); break;
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// ::= ad # & (unary)
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// ::= an # &
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case OO_Amp: Out << (Arity == 1? "ad" : "an"); break;
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// ::= de # * (unary)
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// ::= ml # *
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case OO_Star: Out << (Arity == 1? "de" : "ml"); break;
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// ::= co # ~
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case OO_Tilde: Out << "co"; break;
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// ::= dv # /
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case OO_Slash: Out << "dv"; break;
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// ::= rm # %
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case OO_Percent: Out << "rm"; break;
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// ::= or # |
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case OO_Pipe: Out << "or"; break;
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// ::= eo # ^
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case OO_Caret: Out << "eo"; break;
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// ::= aS # =
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case OO_Equal: Out << "aS"; break;
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// ::= pL # +=
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case OO_PlusEqual: Out << "pL"; break;
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// ::= mI # -=
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case OO_MinusEqual: Out << "mI"; break;
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// ::= mL # *=
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case OO_StarEqual: Out << "mL"; break;
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// ::= dV # /=
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case OO_SlashEqual: Out << "dV"; break;
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// ::= rM # %=
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case OO_PercentEqual: Out << "rM"; break;
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// ::= aN # &=
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case OO_AmpEqual: Out << "aN"; break;
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// ::= oR # |=
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case OO_PipeEqual: Out << "oR"; break;
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// ::= eO # ^=
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case OO_CaretEqual: Out << "eO"; break;
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// ::= ls # <<
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case OO_LessLess: Out << "ls"; break;
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// ::= rs # >>
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case OO_GreaterGreater: Out << "rs"; break;
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// ::= lS # <<=
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case OO_LessLessEqual: Out << "lS"; break;
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// ::= rS # >>=
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case OO_GreaterGreaterEqual: Out << "rS"; break;
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// ::= eq # ==
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case OO_EqualEqual: Out << "eq"; break;
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// ::= ne # !=
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case OO_ExclaimEqual: Out << "ne"; break;
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// ::= lt # <
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case OO_Less: Out << "lt"; break;
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// ::= gt # >
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case OO_Greater: Out << "gt"; break;
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// ::= le # <=
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case OO_LessEqual: Out << "le"; break;
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// ::= ge # >=
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case OO_GreaterEqual: Out << "ge"; break;
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// ::= nt # !
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case OO_Exclaim: Out << "nt"; break;
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// ::= aa # &&
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case OO_AmpAmp: Out << "aa"; break;
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// ::= oo # ||
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case OO_PipePipe: Out << "oo"; break;
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// ::= pp # ++
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case OO_PlusPlus: Out << "pp"; break;
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// ::= mm # --
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case OO_MinusMinus: Out << "mm"; break;
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// ::= cm # ,
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case OO_Comma: Out << "cm"; break;
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// ::= pm # ->*
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case OO_ArrowStar: Out << "pm"; break;
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// ::= pt # ->
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case OO_Arrow: Out << "pt"; break;
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// ::= cl # ()
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case OO_Call: Out << "cl"; break;
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// ::= ix # []
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case OO_Subscript: Out << "ix"; break;
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// UNSUPPORTED: ::= qu # ?
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case OO_None:
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case OO_Conditional:
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case NUM_OVERLOADED_OPERATORS:
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assert(false && "Not an overloaded operator");
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break;
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}
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}
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void CXXNameMangler::mangleCVQualifiers(unsigned Quals) {
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// <CV-qualifiers> ::= [r] [V] [K] # restrict (C99), volatile, const
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if (Quals & QualType::Restrict)
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Out << 'r';
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if (Quals & QualType::Volatile)
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Out << 'V';
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if (Quals & QualType::Const)
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Out << 'K';
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}
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void CXXNameMangler::mangleType(QualType T) {
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// Only operate on the canonical type!
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T = Context.getCanonicalType(T);
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// FIXME: Should we have a TypeNodes.def to make this easier? (YES!)
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// <type> ::= <CV-qualifiers> <type>
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mangleCVQualifiers(T.getCVRQualifiers());
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// ::= <builtin-type>
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if (const BuiltinType *BT = dyn_cast<BuiltinType>(T.getTypePtr()))
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mangleType(BT);
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// ::= <function-type>
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else if (const FunctionType *FT = dyn_cast<FunctionType>(T.getTypePtr()))
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mangleType(FT);
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// ::= <class-enum-type>
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else if (const TagType *TT = dyn_cast<TagType>(T.getTypePtr()))
|
|
mangleType(TT);
|
|
// ::= <array-type>
|
|
else if (const ArrayType *AT = dyn_cast<ArrayType>(T.getTypePtr()))
|
|
mangleType(AT);
|
|
// ::= <pointer-to-member-type>
|
|
else if (const MemberPointerType *MPT
|
|
= dyn_cast<MemberPointerType>(T.getTypePtr()))
|
|
mangleType(MPT);
|
|
// ::= <template-param>
|
|
else if (const TemplateTypeParmType *TypeParm
|
|
= dyn_cast<TemplateTypeParmType>(T.getTypePtr()))
|
|
mangleType(TypeParm);
|
|
// FIXME: ::= <template-template-param> <template-args>
|
|
// FIXME: ::= <substitution> # See Compression below
|
|
// ::= P <type> # pointer-to
|
|
else if (const PointerType *PT = dyn_cast<PointerType>(T.getTypePtr())) {
|
|
Out << 'P';
|
|
mangleType(PT->getPointeeType());
|
|
}
|
|
else if (const ObjCObjectPointerType *PT =
|
|
dyn_cast<ObjCObjectPointerType>(T.getTypePtr())) {
|
|
Out << 'P';
|
|
mangleType(PT->getPointeeType());
|
|
}
|
|
// ::= R <type> # reference-to
|
|
else if (const LValueReferenceType *RT =
|
|
dyn_cast<LValueReferenceType>(T.getTypePtr())) {
|
|
Out << 'R';
|
|
mangleType(RT->getPointeeType());
|
|
}
|
|
// ::= O <type> # rvalue reference-to (C++0x)
|
|
else if (const RValueReferenceType *RT =
|
|
dyn_cast<RValueReferenceType>(T.getTypePtr())) {
|
|
Out << 'O';
|
|
mangleType(RT->getPointeeType());
|
|
}
|
|
// ::= C <type> # complex pair (C 2000)
|
|
else if (const ComplexType *CT = dyn_cast<ComplexType>(T.getTypePtr())) {
|
|
Out << 'C';
|
|
mangleType(CT->getElementType());
|
|
} else if (const VectorType *VT = dyn_cast<VectorType>(T.getTypePtr())) {
|
|
// GNU extension: vector types
|
|
Out << "U8__vector";
|
|
mangleType(VT->getElementType());
|
|
} else if (const ObjCInterfaceType *IT =
|
|
dyn_cast<ObjCInterfaceType>(T.getTypePtr())) {
|
|
mangleType(IT);
|
|
}
|
|
// FIXME: ::= G <type> # imaginary (C 2000)
|
|
// FIXME: ::= U <source-name> <type> # vendor extended type qualifier
|
|
else
|
|
assert(false && "Cannot mangle unknown type");
|
|
}
|
|
|
|
void CXXNameMangler::mangleType(const BuiltinType *T) {
|
|
// <builtin-type> ::= v # void
|
|
// ::= w # wchar_t
|
|
// ::= b # bool
|
|
// ::= c # char
|
|
// ::= a # signed char
|
|
// ::= h # unsigned char
|
|
// ::= s # short
|
|
// ::= t # unsigned short
|
|
// ::= i # int
|
|
// ::= j # unsigned int
|
|
// ::= l # long
|
|
// ::= m # unsigned long
|
|
// ::= x # long long, __int64
|
|
// ::= y # unsigned long long, __int64
|
|
// ::= n # __int128
|
|
// UNSUPPORTED: ::= o # unsigned __int128
|
|
// ::= f # float
|
|
// ::= d # double
|
|
// ::= e # long double, __float80
|
|
// UNSUPPORTED: ::= g # __float128
|
|
// UNSUPPORTED: ::= Dd # IEEE 754r decimal floating point (64 bits)
|
|
// UNSUPPORTED: ::= De # IEEE 754r decimal floating point (128 bits)
|
|
// UNSUPPORTED: ::= Df # IEEE 754r decimal floating point (32 bits)
|
|
// UNSUPPORTED: ::= Dh # IEEE 754r half-precision floating point (16 bits)
|
|
// ::= Di # char32_t
|
|
// ::= Ds # char16_t
|
|
// ::= u <source-name> # vendor extended type
|
|
// From our point of view, std::nullptr_t is a builtin, but as far as mangling
|
|
// is concerned, it's a type called std::nullptr_t.
|
|
switch (T->getKind()) {
|
|
case BuiltinType::Void: Out << 'v'; break;
|
|
case BuiltinType::Bool: Out << 'b'; break;
|
|
case BuiltinType::Char_U: case BuiltinType::Char_S: Out << 'c'; break;
|
|
case BuiltinType::UChar: Out << 'h'; break;
|
|
case BuiltinType::UShort: Out << 't'; break;
|
|
case BuiltinType::UInt: Out << 'j'; break;
|
|
case BuiltinType::ULong: Out << 'm'; break;
|
|
case BuiltinType::ULongLong: Out << 'y'; break;
|
|
case BuiltinType::UInt128: Out << 'o'; break;
|
|
case BuiltinType::SChar: Out << 'a'; break;
|
|
case BuiltinType::WChar: Out << 'w'; break;
|
|
case BuiltinType::Char16: Out << "Ds"; break;
|
|
case BuiltinType::Char32: Out << "Di"; break;
|
|
case BuiltinType::Short: Out << 's'; break;
|
|
case BuiltinType::Int: Out << 'i'; break;
|
|
case BuiltinType::Long: Out << 'l'; break;
|
|
case BuiltinType::LongLong: Out << 'x'; break;
|
|
case BuiltinType::Int128: Out << 'n'; break;
|
|
case BuiltinType::Float: Out << 'f'; break;
|
|
case BuiltinType::Double: Out << 'd'; break;
|
|
case BuiltinType::LongDouble: Out << 'e'; break;
|
|
case BuiltinType::NullPtr: Out << "St9nullptr_t"; break;
|
|
|
|
case BuiltinType::Overload:
|
|
case BuiltinType::Dependent:
|
|
assert(false &&
|
|
"Overloaded and dependent types shouldn't get to name mangling");
|
|
break;
|
|
case BuiltinType::UndeducedAuto:
|
|
assert(0 && "Should not see undeduced auto here");
|
|
break;
|
|
case BuiltinType::ObjCId: Out << "11objc_object"; break;
|
|
case BuiltinType::ObjCClass: Out << "10objc_class"; break;
|
|
}
|
|
}
|
|
|
|
void CXXNameMangler::mangleType(const FunctionType *T) {
|
|
// <function-type> ::= F [Y] <bare-function-type> E
|
|
Out << 'F';
|
|
// FIXME: We don't have enough information in the AST to produce the 'Y'
|
|
// encoding for extern "C" function types.
|
|
mangleBareFunctionType(T, /*MangleReturnType=*/true);
|
|
Out << 'E';
|
|
}
|
|
|
|
void CXXNameMangler::mangleBareFunctionType(const FunctionType *T,
|
|
bool MangleReturnType) {
|
|
// <bare-function-type> ::= <signature type>+
|
|
if (MangleReturnType)
|
|
mangleType(T->getResultType());
|
|
|
|
const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(T);
|
|
assert(Proto && "Can't mangle K&R function prototypes");
|
|
|
|
if (Proto->getNumArgs() == 0) {
|
|
Out << 'v';
|
|
return;
|
|
}
|
|
|
|
for (FunctionProtoType::arg_type_iterator Arg = Proto->arg_type_begin(),
|
|
ArgEnd = Proto->arg_type_end();
|
|
Arg != ArgEnd; ++Arg)
|
|
mangleType(*Arg);
|
|
|
|
// <builtin-type> ::= z # ellipsis
|
|
if (Proto->isVariadic())
|
|
Out << 'z';
|
|
}
|
|
|
|
void CXXNameMangler::mangleType(const TagType *T) {
|
|
// <class-enum-type> ::= <name>
|
|
|
|
if (!T->getDecl()->getIdentifier())
|
|
mangleName(T->getDecl()->getTypedefForAnonDecl());
|
|
else
|
|
mangleName(T->getDecl());
|
|
|
|
// If this is a class template specialization, mangle the template
|
|
// arguments.
|
|
if (ClassTemplateSpecializationDecl *Spec
|
|
= dyn_cast<ClassTemplateSpecializationDecl>(T->getDecl()))
|
|
mangleTemplateArgumentList(Spec->getTemplateArgs());
|
|
}
|
|
|
|
void CXXNameMangler::mangleType(const ArrayType *T) {
|
|
// <array-type> ::= A <positive dimension number> _ <element type>
|
|
// ::= A [<dimension expression>] _ <element type>
|
|
Out << 'A';
|
|
if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(T))
|
|
Out << CAT->getSize();
|
|
else if (const VariableArrayType *VAT = dyn_cast<VariableArrayType>(T))
|
|
mangleExpression(VAT->getSizeExpr());
|
|
else if (const DependentSizedArrayType *DSAT
|
|
= dyn_cast<DependentSizedArrayType>(T))
|
|
mangleExpression(DSAT->getSizeExpr());
|
|
|
|
Out << '_';
|
|
mangleType(T->getElementType());
|
|
}
|
|
|
|
void CXXNameMangler::mangleType(const MemberPointerType *T) {
|
|
// <pointer-to-member-type> ::= M <class type> <member type>
|
|
Out << 'M';
|
|
mangleType(QualType(T->getClass(), 0));
|
|
QualType PointeeType = T->getPointeeType();
|
|
if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(PointeeType)) {
|
|
mangleCVQualifiers(FPT->getTypeQuals());
|
|
mangleType(FPT);
|
|
} else
|
|
mangleType(PointeeType);
|
|
}
|
|
|
|
void CXXNameMangler::mangleType(const TemplateTypeParmType *T) {
|
|
// <template-param> ::= T_ # first template parameter
|
|
// ::= T <parameter-2 non-negative number> _
|
|
if (T->getIndex() == 0)
|
|
Out << "T_";
|
|
else
|
|
Out << 'T' << (T->getIndex() - 1) << '_';
|
|
}
|
|
|
|
void CXXNameMangler::mangleType(const ObjCInterfaceType *T) {
|
|
mangleSourceName(T->getDecl()->getIdentifier());
|
|
}
|
|
|
|
void CXXNameMangler::mangleExpression(Expr *E) {
|
|
assert(false && "Cannot mangle expressions yet");
|
|
}
|
|
|
|
void CXXNameMangler::mangleCXXCtorType(CXXCtorType T) {
|
|
// <ctor-dtor-name> ::= C1 # complete object constructor
|
|
// ::= C2 # base object constructor
|
|
// ::= C3 # complete object allocating constructor
|
|
//
|
|
switch (T) {
|
|
case Ctor_Complete:
|
|
Out << "C1";
|
|
break;
|
|
case Ctor_Base:
|
|
Out << "C2";
|
|
break;
|
|
case Ctor_CompleteAllocating:
|
|
Out << "C3";
|
|
break;
|
|
}
|
|
}
|
|
|
|
void CXXNameMangler::mangleCXXDtorType(CXXDtorType T) {
|
|
// <ctor-dtor-name> ::= D0 # deleting destructor
|
|
// ::= D1 # complete object destructor
|
|
// ::= D2 # base object destructor
|
|
//
|
|
switch (T) {
|
|
case Dtor_Deleting:
|
|
Out << "D0";
|
|
break;
|
|
case Dtor_Complete:
|
|
Out << "D1";
|
|
break;
|
|
case Dtor_Base:
|
|
Out << "D2";
|
|
break;
|
|
}
|
|
}
|
|
|
|
void CXXNameMangler::mangleTemplateArgumentList(const TemplateArgumentList &L) {
|
|
// <template-args> ::= I <template-arg>+ E
|
|
Out << "I";
|
|
|
|
for (unsigned i = 0, e = L.size(); i != e; ++i) {
|
|
const TemplateArgument &A = L[i];
|
|
|
|
mangleTemplateArgument(A);
|
|
}
|
|
|
|
Out << "E";
|
|
}
|
|
|
|
void CXXNameMangler::mangleTemplateArgument(const TemplateArgument &A) {
|
|
// <template-arg> ::= <type> # type or template
|
|
// ::= X <expression> E # expression
|
|
// ::= <expr-primary> # simple expressions
|
|
// ::= I <template-arg>* E # argument pack
|
|
// ::= sp <expression> # pack expansion of (C++0x)
|
|
switch (A.getKind()) {
|
|
default:
|
|
assert(0 && "Unknown template argument kind!");
|
|
case TemplateArgument::Type:
|
|
mangleType(A.getAsType());
|
|
break;
|
|
case TemplateArgument::Integral:
|
|
// <expr-primary> ::= L <type> <value number> E # integer literal
|
|
|
|
Out << 'L';
|
|
|
|
mangleType(A.getIntegralType());
|
|
|
|
const llvm::APSInt *Integral = A.getAsIntegral();
|
|
if (A.getIntegralType()->isBooleanType()) {
|
|
// Boolean values are encoded as 0/1.
|
|
Out << (Integral->getBoolValue() ? '1' : '0');
|
|
} else {
|
|
if (Integral->isNegative())
|
|
Out << 'n';
|
|
Integral->abs().print(Out, false);
|
|
}
|
|
|
|
Out << 'E';
|
|
break;
|
|
}
|
|
}
|
|
|
|
namespace clang {
|
|
/// \brief Mangles the name of the declaration D and emits that name
|
|
/// to the given output stream.
|
|
///
|
|
/// If the declaration D requires a mangled name, this routine will
|
|
/// emit that mangled name to \p os and return true. Otherwise, \p
|
|
/// os will be unchanged and this routine will return false. In this
|
|
/// case, the caller should just emit the identifier of the declaration
|
|
/// (\c D->getIdentifier()) as its name.
|
|
bool mangleName(const NamedDecl *D, ASTContext &Context,
|
|
llvm::raw_ostream &os) {
|
|
assert(!isa<CXXConstructorDecl>(D) &&
|
|
"Use mangleCXXCtor for constructor decls!");
|
|
assert(!isa<CXXDestructorDecl>(D) &&
|
|
"Use mangleCXXDtor for destructor decls!");
|
|
|
|
CXXNameMangler Mangler(Context, os);
|
|
if (!Mangler.mangle(D))
|
|
return false;
|
|
|
|
os.flush();
|
|
return true;
|
|
}
|
|
|
|
/// mangleGuardVariable - Returns the mangled name for a guard variable
|
|
/// for the passed in VarDecl.
|
|
void mangleGuardVariable(const VarDecl *D, ASTContext &Context,
|
|
llvm::raw_ostream &os) {
|
|
CXXNameMangler Mangler(Context, os);
|
|
Mangler.mangleGuardVariable(D);
|
|
|
|
os.flush();
|
|
}
|
|
|
|
void mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type,
|
|
ASTContext &Context, llvm::raw_ostream &os) {
|
|
CXXNameMangler Mangler(Context, os);
|
|
Mangler.mangleCXXCtor(D, Type);
|
|
|
|
os.flush();
|
|
}
|
|
|
|
void mangleCXXDtor(const CXXDestructorDecl *D, CXXDtorType Type,
|
|
ASTContext &Context, llvm::raw_ostream &os) {
|
|
CXXNameMangler Mangler(Context, os);
|
|
Mangler.mangleCXXDtor(D, Type);
|
|
|
|
os.flush();
|
|
}
|
|
|
|
void mangleCXXVtable(QualType Type, ASTContext &Context,
|
|
llvm::raw_ostream &os) {
|
|
CXXNameMangler Mangler(Context, os);
|
|
Mangler.mangleCXXVtable(Type);
|
|
|
|
os.flush();
|
|
}
|
|
|
|
void mangleCXXRtti(QualType Type, ASTContext &Context,
|
|
llvm::raw_ostream &os) {
|
|
CXXNameMangler Mangler(Context, os);
|
|
Mangler.mangleCXXRtti(Type);
|
|
|
|
os.flush();
|
|
}
|
|
}
|