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//===--- ModuleBuilder.cpp - Emit LLVM Code from ASTs ---------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This builds an AST and converts it to LLVM Code.
//
//===----------------------------------------------------------------------===//
#include "clang/CodeGen/ModuleBuilder.h"
#include "CodeGenModule.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/Expr.h"
using namespace clang;
//===----------------------------------------------------------------------===//
// LLVM Emitter
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/Module.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Support/Compiler.h"
#include "llvm/ADT/OwningPtr.h"
namespace {
class VISIBILITY_HIDDEN CodeGeneratorImpl : public CodeGenerator {
Diagnostic &Diags;
llvm::OwningPtr<const llvm::TargetData> TD;
ASTContext *Ctx;
const LangOptions &Features;
bool GenerateDebugInfo;
protected:
llvm::OwningPtr<llvm::Module> M;
llvm::OwningPtr<CodeGen::CodeGenModule> Builder;
public:
CodeGeneratorImpl(Diagnostic &diags, const LangOptions &LO,
const std::string& ModuleName,
bool DebugInfoFlag)
: Diags(diags), Features(LO), GenerateDebugInfo(DebugInfoFlag),
M(new llvm::Module(ModuleName)) {}
virtual ~CodeGeneratorImpl() {}
virtual llvm::Module* GetModule() {
return M.get();
}
virtual llvm::Module* ReleaseModule() {
return M.take();
}
virtual void Initialize(ASTContext &Context) {
Ctx = &Context;
M->setTargetTriple(Ctx->Target.getTargetTriple());
M->setDataLayout(Ctx->Target.getTargetDescription());
TD.reset(new llvm::TargetData(Ctx->Target.getTargetDescription()));
Builder.reset(new CodeGen::CodeGenModule(Context, Features, *M, *TD,
Diags, GenerateDebugInfo));
}
virtual void HandleTopLevelDecl(Decl *D) {
// Make sure to emit all elements of a ScopedDecl.
if (ScopedDecl *SD = dyn_cast<ScopedDecl>(D)) {
for (; SD; SD = SD->getNextDeclarator())
Builder->EmitTopLevelDecl(SD);
} else {
Builder->EmitTopLevelDecl(D);
}
}
/// HandleTagDeclDefinition - This callback is invoked each time a TagDecl
/// (e.g. struct, union, enum, class) is completed. This allows the client to
/// hack on the type, which can occur at any point in the file (because these
/// can be defined in declspecs).
virtual void HandleTagDeclDefinition(TagDecl *D) {
Builder->UpdateCompletedType(D);
}
virtual void HandleTranslationUnit(TranslationUnit& TU) {
if (Diags.hasErrorOccurred()) {
M.reset();
return;
}
if (Builder)
Builder->Release();
};
};
}
CodeGenerator *clang::CreateLLVMCodeGen(Diagnostic &Diags,
const LangOptions &Features,
const std::string& ModuleName,
bool GenerateDebugInfo) {
return new CodeGeneratorImpl(Diags, Features, ModuleName, GenerateDebugInfo);
}
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