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//===--- FrontendActions.cpp ----------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Rewrite/Frontend/FrontendActions.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "clang/Frontend/Utils.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Lex/PreprocessorOptions.h"
#include "clang/Rewrite/Frontend/ASTConsumers.h"
#include "clang/Rewrite/Frontend/FixItRewriter.h"
#include "clang/Rewrite/Frontend/Rewriters.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
#include <memory>
#include <utility>
using namespace clang;
//===----------------------------------------------------------------------===//
// AST Consumer Actions
//===----------------------------------------------------------------------===//
std::unique_ptr<ASTConsumer>
HTMLPrintAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
if (std::unique_ptr<raw_ostream> OS =
CI.createDefaultOutputFile(false, InFile))
return CreateHTMLPrinter(std::move(OS), CI.getPreprocessor());
return nullptr;
}
FixItAction::FixItAction() {}
FixItAction::~FixItAction() {}
std::unique_ptr<ASTConsumer>
FixItAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return llvm::make_unique<ASTConsumer>();
}
namespace {
class FixItRewriteInPlace : public FixItOptions {
public:
FixItRewriteInPlace() { InPlace = true; }
std::string RewriteFilename(const std::string &Filename, int &fd) override {
llvm_unreachable("don't call RewriteFilename for inplace rewrites");
}
};
class FixItActionSuffixInserter : public FixItOptions {
std::string NewSuffix;
public:
FixItActionSuffixInserter(std::string NewSuffix, bool FixWhatYouCan)
: NewSuffix(std::move(NewSuffix)) {
this->FixWhatYouCan = FixWhatYouCan;
}
std::string RewriteFilename(const std::string &Filename, int &fd) override {
fd = -1;
SmallString<128> Path(Filename);
llvm::sys::path::replace_extension(Path,
NewSuffix + llvm::sys::path::extension(Path));
return Path.str();
}
};
class FixItRewriteToTemp : public FixItOptions {
public:
std::string RewriteFilename(const std::string &Filename, int &fd) override {
SmallString<128> Path;
llvm::sys::fs::createTemporaryFile(llvm::sys::path::filename(Filename),
llvm::sys::path::extension(Filename).drop_front(), fd,
Path);
return Path.str();
}
};
} // end anonymous namespace
bool FixItAction::BeginSourceFileAction(CompilerInstance &CI,
StringRef Filename) {
const FrontendOptions &FEOpts = getCompilerInstance().getFrontendOpts();
if (!FEOpts.FixItSuffix.empty()) {
FixItOpts.reset(new FixItActionSuffixInserter(FEOpts.FixItSuffix,
FEOpts.FixWhatYouCan));
} else {
FixItOpts.reset(new FixItRewriteInPlace);
FixItOpts->FixWhatYouCan = FEOpts.FixWhatYouCan;
}
Rewriter.reset(new FixItRewriter(CI.getDiagnostics(), CI.getSourceManager(),
CI.getLangOpts(), FixItOpts.get()));
return true;
}
void FixItAction::EndSourceFileAction() {
// Otherwise rewrite all files.
Rewriter->WriteFixedFiles();
}
bool FixItRecompile::BeginInvocation(CompilerInstance &CI) {
std::vector<std::pair<std::string, std::string> > RewrittenFiles;
bool err = false;
{
const FrontendOptions &FEOpts = CI.getFrontendOpts();
std::unique_ptr<FrontendAction> FixAction(new SyntaxOnlyAction());
if (FixAction->BeginSourceFile(CI, FEOpts.Inputs[0])) {
std::unique_ptr<FixItOptions> FixItOpts;
if (FEOpts.FixToTemporaries)
FixItOpts.reset(new FixItRewriteToTemp());
else
FixItOpts.reset(new FixItRewriteInPlace());
FixItOpts->Silent = true;
FixItOpts->FixWhatYouCan = FEOpts.FixWhatYouCan;
FixItOpts->FixOnlyWarnings = FEOpts.FixOnlyWarnings;
FixItRewriter Rewriter(CI.getDiagnostics(), CI.getSourceManager(),
CI.getLangOpts(), FixItOpts.get());
FixAction->Execute();
err = Rewriter.WriteFixedFiles(&RewrittenFiles);
FixAction->EndSourceFile();
CI.setSourceManager(nullptr);
CI.setFileManager(nullptr);
} else {
err = true;
}
}
if (err)
return false;
CI.getDiagnosticClient().clear();
CI.getDiagnostics().Reset();
PreprocessorOptions &PPOpts = CI.getPreprocessorOpts();
PPOpts.RemappedFiles.insert(PPOpts.RemappedFiles.end(),
RewrittenFiles.begin(), RewrittenFiles.end());
PPOpts.RemappedFilesKeepOriginalName = false;
return true;
}
#ifdef CLANG_ENABLE_OBJC_REWRITER
std::unique_ptr<ASTConsumer>
RewriteObjCAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
if (std::unique_ptr<raw_ostream> OS =
CI.createDefaultOutputFile(false, InFile, "cpp")) {
if (CI.getLangOpts().ObjCRuntime.isNonFragile())
return CreateModernObjCRewriter(
InFile, std::move(OS), CI.getDiagnostics(), CI.getLangOpts(),
CI.getDiagnosticOpts().NoRewriteMacros,
(CI.getCodeGenOpts().getDebugInfo() != codegenoptions::NoDebugInfo));
return CreateObjCRewriter(InFile, std::move(OS), CI.getDiagnostics(),
CI.getLangOpts(),
CI.getDiagnosticOpts().NoRewriteMacros);
}
return nullptr;
}
#endif
//===----------------------------------------------------------------------===//
// Preprocessor Actions
//===----------------------------------------------------------------------===//
void RewriteMacrosAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
std::unique_ptr<raw_ostream> OS =
CI.createDefaultOutputFile(true, getCurrentFile());
if (!OS) return;
RewriteMacrosInInput(CI.getPreprocessor(), OS.get());
}
void RewriteTestAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
std::unique_ptr<raw_ostream> OS =
CI.createDefaultOutputFile(false, getCurrentFile());
if (!OS) return;
DoRewriteTest(CI.getPreprocessor(), OS.get());
}
void RewriteIncludesAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
std::unique_ptr<raw_ostream> OS =
CI.createDefaultOutputFile(true, getCurrentFile());
if (!OS) return;
// If we're preprocessing a module map, start by dumping the contents of the
// module itself before switching to the input buffer.
auto &Input = getCurrentInput();
if (Input.getKind().getFormat() == InputKind::ModuleMap) {
if (Input.isFile())
(*OS) << "# 1 \"" << Input.getFile() << "\"\n";
// FIXME: Include additional information here so that we don't need the
// original source files to exist on disk.
getCurrentModule()->print(*OS);
(*OS) << "#pragma clang module contents\n";
}
RewriteIncludesInInput(CI.getPreprocessor(), OS.get(),
CI.getPreprocessorOutputOpts());
}
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