mirror of
https://github.com/intel/llvm.git
synced 2026-01-26 21:53:12 +08:00
[clang][AST] Refactoring ASTNameGenerator to use pimpl pattern (NFC).
The original pimpl pattern used between CodegenNameGenerator and CodegenNameGeneratorImpl did a good job of hiding DataLayout making it so that users of CodegenNameGenerator did not need to link with llvm core. This is an NFC change to neatly wrap ASTNameGenerator in a pimpl. Differential Revision: https://reviews.llvm.org/D63584 llvm-svn: 363908
This commit is contained in:
Puyan Lotfi
@@ -17,7 +17,6 @@
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#include "clang/AST/Type.h"
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#include "clang/Basic/ABI.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/Support/Casting.h"
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namespace llvm {
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@@ -246,21 +245,16 @@ public:
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};
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class ASTNameGenerator {
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std::unique_ptr<MangleContext> MC;
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llvm::DataLayout DL;
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public:
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explicit ASTNameGenerator(ASTContext &Ctx);
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~ASTNameGenerator();
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bool writeName(const Decl *D, raw_ostream &OS);
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std::string getName(const Decl *D);
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std::vector<std::string> getAllManglings(const Decl *D);
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private:
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std::vector<std::string> getAllManglings(const ObjCContainerDecl *OCD);
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bool writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS);
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void writeObjCClassName(const ObjCInterfaceDecl *D, raw_ostream &OS);
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std::string getMangledStructor(const NamedDecl *ND, unsigned StructorType);
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std::string getMangledThunk(const CXXMethodDecl *MD, const ThunkInfo &T);
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class Implementation;
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std::unique_ptr<Implementation> Impl;
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};
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}
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@@ -22,6 +22,7 @@
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/TargetInfo.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/Mangler.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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@@ -283,183 +284,204 @@ void MangleContext::mangleObjCMethodName(const ObjCMethodDecl *MD,
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Out << OS.str().size() << OS.str();
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}
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ASTNameGenerator::ASTNameGenerator(ASTContext &Ctx)
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: MC(Ctx.createMangleContext()), DL(Ctx.getTargetInfo().getDataLayout()) {}
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class ASTNameGenerator::Implementation {
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std::unique_ptr<MangleContext> MC;
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llvm::DataLayout DL;
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bool ASTNameGenerator::writeName(const Decl *D, raw_ostream &OS) {
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// First apply frontend mangling.
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SmallString<128> FrontendBuf;
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llvm::raw_svector_ostream FrontendBufOS(FrontendBuf);
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if (auto *FD = dyn_cast<FunctionDecl>(D)) {
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if (FD->isDependentContext())
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return true;
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if (writeFuncOrVarName(FD, FrontendBufOS))
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return true;
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} else if (auto *VD = dyn_cast<VarDecl>(D)) {
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if (writeFuncOrVarName(VD, FrontendBufOS))
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return true;
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} else if (auto *MD = dyn_cast<ObjCMethodDecl>(D)) {
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MC->mangleObjCMethodNameWithoutSize(MD, OS);
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return false;
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} else if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
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writeObjCClassName(ID, FrontendBufOS);
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} else {
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return true;
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public:
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explicit Implementation(ASTContext &Ctx)
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: MC(Ctx.createMangleContext()), DL(Ctx.getTargetInfo().getDataLayout()) {
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}
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// Now apply backend mangling.
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llvm::Mangler::getNameWithPrefix(OS, FrontendBufOS.str(), DL);
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return false;
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bool writeName(const Decl *D, raw_ostream &OS) {
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// First apply frontend mangling.
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SmallString<128> FrontendBuf;
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llvm::raw_svector_ostream FrontendBufOS(FrontendBuf);
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if (auto *FD = dyn_cast<FunctionDecl>(D)) {
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if (FD->isDependentContext())
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return true;
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if (writeFuncOrVarName(FD, FrontendBufOS))
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return true;
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} else if (auto *VD = dyn_cast<VarDecl>(D)) {
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if (writeFuncOrVarName(VD, FrontendBufOS))
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return true;
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} else if (auto *MD = dyn_cast<ObjCMethodDecl>(D)) {
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MC->mangleObjCMethodNameWithoutSize(MD, OS);
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return false;
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} else if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
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writeObjCClassName(ID, FrontendBufOS);
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} else {
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return true;
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}
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// Now apply backend mangling.
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llvm::Mangler::getNameWithPrefix(OS, FrontendBufOS.str(), DL);
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return false;
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}
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std::string getName(const Decl *D) {
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std::string Name;
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{
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llvm::raw_string_ostream OS(Name);
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writeName(D, OS);
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}
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return Name;
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}
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enum ObjCKind {
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ObjCClass,
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ObjCMetaclass,
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};
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static StringRef getClassSymbolPrefix(ObjCKind Kind,
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const ASTContext &Context) {
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if (Context.getLangOpts().ObjCRuntime.isGNUFamily())
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return Kind == ObjCMetaclass ? "_OBJC_METACLASS_" : "_OBJC_CLASS_";
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return Kind == ObjCMetaclass ? "OBJC_METACLASS_$_" : "OBJC_CLASS_$_";
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}
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std::vector<std::string> getAllManglings(const ObjCContainerDecl *OCD) {
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StringRef ClassName;
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if (const auto *OID = dyn_cast<ObjCInterfaceDecl>(OCD))
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ClassName = OID->getObjCRuntimeNameAsString();
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else if (const auto *OID = dyn_cast<ObjCImplementationDecl>(OCD))
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ClassName = OID->getObjCRuntimeNameAsString();
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if (ClassName.empty())
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return {};
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auto Mangle = [&](ObjCKind Kind, StringRef ClassName) -> std::string {
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SmallString<40> Mangled;
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auto Prefix = getClassSymbolPrefix(Kind, OCD->getASTContext());
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llvm::Mangler::getNameWithPrefix(Mangled, Prefix + ClassName, DL);
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return Mangled.str();
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};
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return {
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Mangle(ObjCClass, ClassName),
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Mangle(ObjCMetaclass, ClassName),
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};
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}
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std::vector<std::string> getAllManglings(const Decl *D) {
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if (const auto *OCD = dyn_cast<ObjCContainerDecl>(D))
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return getAllManglings(OCD);
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if (!(isa<CXXRecordDecl>(D) || isa<CXXMethodDecl>(D)))
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return {};
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const NamedDecl *ND = cast<NamedDecl>(D);
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ASTContext &Ctx = ND->getASTContext();
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std::unique_ptr<MangleContext> M(Ctx.createMangleContext());
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std::vector<std::string> Manglings;
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auto hasDefaultCXXMethodCC = [](ASTContext &C, const CXXMethodDecl *MD) {
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auto DefaultCC = C.getDefaultCallingConvention(/*IsVariadic=*/false,
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/*IsCSSMethod=*/true);
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auto CC = MD->getType()->getAs<FunctionProtoType>()->getCallConv();
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return CC == DefaultCC;
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};
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if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND)) {
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Manglings.emplace_back(getMangledStructor(CD, Ctor_Base));
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if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily())
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if (!CD->getParent()->isAbstract())
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Manglings.emplace_back(getMangledStructor(CD, Ctor_Complete));
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if (Ctx.getTargetInfo().getCXXABI().isMicrosoft())
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if (CD->hasAttr<DLLExportAttr>() && CD->isDefaultConstructor())
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if (!(hasDefaultCXXMethodCC(Ctx, CD) && CD->getNumParams() == 0))
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Manglings.emplace_back(getMangledStructor(CD, Ctor_DefaultClosure));
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} else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND)) {
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Manglings.emplace_back(getMangledStructor(DD, Dtor_Base));
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if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) {
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Manglings.emplace_back(getMangledStructor(DD, Dtor_Complete));
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if (DD->isVirtual())
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Manglings.emplace_back(getMangledStructor(DD, Dtor_Deleting));
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}
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} else if (const auto *MD = dyn_cast_or_null<CXXMethodDecl>(ND)) {
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Manglings.emplace_back(getName(ND));
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if (MD->isVirtual())
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if (const auto *TIV = Ctx.getVTableContext()->getThunkInfo(MD))
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for (const auto &T : *TIV)
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Manglings.emplace_back(getMangledThunk(MD, T));
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}
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return Manglings;
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}
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private:
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bool writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS) {
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if (MC->shouldMangleDeclName(D)) {
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if (const auto *CtorD = dyn_cast<CXXConstructorDecl>(D))
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MC->mangleCXXCtor(CtorD, Ctor_Complete, OS);
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else if (const auto *DtorD = dyn_cast<CXXDestructorDecl>(D))
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MC->mangleCXXDtor(DtorD, Dtor_Complete, OS);
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else
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MC->mangleName(D, OS);
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return false;
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} else {
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IdentifierInfo *II = D->getIdentifier();
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if (!II)
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return true;
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OS << II->getName();
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return false;
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}
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}
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void writeObjCClassName(const ObjCInterfaceDecl *D, raw_ostream &OS) {
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OS << getClassSymbolPrefix(ObjCClass, D->getASTContext());
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OS << D->getObjCRuntimeNameAsString();
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}
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std::string getMangledStructor(const NamedDecl *ND, unsigned StructorType) {
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std::string FrontendBuf;
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llvm::raw_string_ostream FOS(FrontendBuf);
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if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND))
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MC->mangleCXXCtor(CD, static_cast<CXXCtorType>(StructorType), FOS);
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else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND))
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MC->mangleCXXDtor(DD, static_cast<CXXDtorType>(StructorType), FOS);
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std::string BackendBuf;
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llvm::raw_string_ostream BOS(BackendBuf);
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llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
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return BOS.str();
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}
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std::string getMangledThunk(const CXXMethodDecl *MD, const ThunkInfo &T) {
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std::string FrontendBuf;
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llvm::raw_string_ostream FOS(FrontendBuf);
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MC->mangleThunk(MD, T, FOS);
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std::string BackendBuf;
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llvm::raw_string_ostream BOS(BackendBuf);
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llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
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return BOS.str();
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}
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};
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ASTNameGenerator::ASTNameGenerator(ASTContext &Ctx)
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: Impl(llvm::make_unique<Implementation>(Ctx)) {}
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ASTNameGenerator::~ASTNameGenerator() {}
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bool ASTNameGenerator::writeName(const Decl *D, raw_ostream &OS) {
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return Impl->writeName(D, OS);
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}
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std::string ASTNameGenerator::getName(const Decl *D) {
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std::string Name;
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{
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llvm::raw_string_ostream OS(Name);
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writeName(D, OS);
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}
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return Name;
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}
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enum ObjCKind {
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ObjCClass,
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ObjCMetaclass,
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};
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static StringRef getClassSymbolPrefix(ObjCKind Kind,
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const ASTContext &Context) {
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if (Context.getLangOpts().ObjCRuntime.isGNUFamily())
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return Kind == ObjCMetaclass ? "_OBJC_METACLASS_" : "_OBJC_CLASS_";
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return Kind == ObjCMetaclass ? "OBJC_METACLASS_$_" : "OBJC_CLASS_$_";
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}
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std::vector<std::string>
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ASTNameGenerator::getAllManglings(const ObjCContainerDecl *OCD) {
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StringRef ClassName;
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if (const auto *OID = dyn_cast<ObjCInterfaceDecl>(OCD))
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ClassName = OID->getObjCRuntimeNameAsString();
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else if (const auto *OID = dyn_cast<ObjCImplementationDecl>(OCD))
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ClassName = OID->getObjCRuntimeNameAsString();
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if (ClassName.empty())
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return {};
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auto Mangle = [&](ObjCKind Kind, StringRef ClassName) -> std::string {
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SmallString<40> Mangled;
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auto Prefix = getClassSymbolPrefix(Kind, OCD->getASTContext());
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llvm::Mangler::getNameWithPrefix(Mangled, Prefix + ClassName, DL);
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return Mangled.str();
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};
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return {
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Mangle(ObjCClass, ClassName),
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Mangle(ObjCMetaclass, ClassName),
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};
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return Impl->getName(D);
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}
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std::vector<std::string> ASTNameGenerator::getAllManglings(const Decl *D) {
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if (const auto *OCD = dyn_cast<ObjCContainerDecl>(D))
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return getAllManglings(OCD);
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if (!(isa<CXXRecordDecl>(D) || isa<CXXMethodDecl>(D)))
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return {};
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const NamedDecl *ND = cast<NamedDecl>(D);
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ASTContext &Ctx = ND->getASTContext();
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std::unique_ptr<MangleContext> M(Ctx.createMangleContext());
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std::vector<std::string> Manglings;
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auto hasDefaultCXXMethodCC = [](ASTContext &C, const CXXMethodDecl *MD) {
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auto DefaultCC = C.getDefaultCallingConvention(/*IsVariadic=*/false,
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/*IsCSSMethod=*/true);
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auto CC = MD->getType()->getAs<FunctionProtoType>()->getCallConv();
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return CC == DefaultCC;
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};
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if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND)) {
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Manglings.emplace_back(getMangledStructor(CD, Ctor_Base));
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if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily())
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if (!CD->getParent()->isAbstract())
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Manglings.emplace_back(getMangledStructor(CD, Ctor_Complete));
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if (Ctx.getTargetInfo().getCXXABI().isMicrosoft())
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if (CD->hasAttr<DLLExportAttr>() && CD->isDefaultConstructor())
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if (!(hasDefaultCXXMethodCC(Ctx, CD) && CD->getNumParams() == 0))
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Manglings.emplace_back(getMangledStructor(CD, Ctor_DefaultClosure));
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} else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND)) {
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Manglings.emplace_back(getMangledStructor(DD, Dtor_Base));
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if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) {
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Manglings.emplace_back(getMangledStructor(DD, Dtor_Complete));
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if (DD->isVirtual())
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Manglings.emplace_back(getMangledStructor(DD, Dtor_Deleting));
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}
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} else if (const auto *MD = dyn_cast_or_null<CXXMethodDecl>(ND)) {
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Manglings.emplace_back(getName(ND));
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if (MD->isVirtual())
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if (const auto *TIV = Ctx.getVTableContext()->getThunkInfo(MD))
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for (const auto &T : *TIV)
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Manglings.emplace_back(getMangledThunk(MD, T));
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}
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return Manglings;
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}
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bool ASTNameGenerator::writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS) {
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if (MC->shouldMangleDeclName(D)) {
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if (const auto *CtorD = dyn_cast<CXXConstructorDecl>(D))
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MC->mangleCXXCtor(CtorD, Ctor_Complete, OS);
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else if (const auto *DtorD = dyn_cast<CXXDestructorDecl>(D))
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MC->mangleCXXDtor(DtorD, Dtor_Complete, OS);
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else
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MC->mangleName(D, OS);
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return false;
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} else {
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IdentifierInfo *II = D->getIdentifier();
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if (!II)
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return true;
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OS << II->getName();
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return false;
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}
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}
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void ASTNameGenerator::writeObjCClassName(const ObjCInterfaceDecl *D,
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raw_ostream &OS) {
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OS << getClassSymbolPrefix(ObjCClass, D->getASTContext());
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OS << D->getObjCRuntimeNameAsString();
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}
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std::string ASTNameGenerator::getMangledStructor(const NamedDecl *ND,
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unsigned StructorType) {
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std::string FrontendBuf;
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llvm::raw_string_ostream FOS(FrontendBuf);
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if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND))
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MC->mangleCXXCtor(CD, static_cast<CXXCtorType>(StructorType), FOS);
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else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND))
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MC->mangleCXXDtor(DD, static_cast<CXXDtorType>(StructorType), FOS);
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std::string BackendBuf;
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llvm::raw_string_ostream BOS(BackendBuf);
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llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
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return BOS.str();
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}
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std::string ASTNameGenerator::getMangledThunk(const CXXMethodDecl *MD,
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const ThunkInfo &T) {
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std::string FrontendBuf;
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llvm::raw_string_ostream FOS(FrontendBuf);
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MC->mangleThunk(MD, T, FOS);
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std::string BackendBuf;
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llvm::raw_string_ostream BOS(BackendBuf);
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llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
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return BOS.str();
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return Impl->getAllManglings(D);
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}
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