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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/Frontend/FrontendActions.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Parse/Parser.h"
#include "clang/Basic/FileManager.h"
#include "clang/Frontend/AnalysisConsumer.h"
#include "clang/Frontend/ASTConsumers.h"
#include "clang/Frontend/ASTUnit.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FixItRewriter.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "clang/Frontend/Utils.h"
#include "llvm/Support/raw_ostream.h"
using namespace clang;
//===----------------------------------------------------------------------===//
// AST Consumer Actions
//===----------------------------------------------------------------------===//
ASTConsumer *AnalysisAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
return CreateAnalysisConsumer(CI.getPreprocessor(),
CI.getFrontendOpts().OutputFile,
CI.getAnalyzerOpts());
}
ASTConsumer *ASTPrintAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
if (llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, InFile))
return CreateASTPrinter(OS);
return 0;
}
ASTConsumer *ASTPrintXMLAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
if (llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, InFile, "xml"))
return CreateASTPrinterXML(OS);
return 0;
}
ASTConsumer *ASTDumpAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
return CreateASTDumper();
}
ASTConsumer *ASTViewAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
return CreateASTViewer();
}
ASTConsumer *DeclContextPrintAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
return CreateDeclContextPrinter();
}
ASTConsumer *DumpRecordAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
return CreateRecordLayoutDumper();
}
ASTConsumer *GeneratePCHAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
const std::string &Sysroot = CI.getHeaderSearchOpts().Sysroot;
if (CI.getFrontendOpts().RelocatablePCH &&
Sysroot.empty()) {
CI.getDiagnostics().Report(diag::err_relocatable_without_without_isysroot);
return 0;
}
llvm::raw_ostream *OS = CI.createDefaultOutputFile(true, InFile);
if (!OS)
return 0;
if (CI.getFrontendOpts().RelocatablePCH)
return CreatePCHGenerator(CI.getPreprocessor(), OS, Sysroot.c_str());
return CreatePCHGenerator(CI.getPreprocessor(), OS);
}
ASTConsumer *HTMLPrintAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
if (llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, InFile))
return CreateHTMLPrinter(OS, CI.getPreprocessor());
return 0;
}
ASTConsumer *InheritanceViewAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
return CreateInheritanceViewer(CI.getFrontendOpts().ViewClassInheritance);
}
FixItAction::FixItAction() {}
FixItAction::~FixItAction() {}
ASTConsumer *FixItAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
return new ASTConsumer();
}
/// AddFixItLocations - Add any individual user specified "fix-it" locations,
/// and return true on success.
static bool AddFixItLocations(CompilerInstance &CI,
FixItRewriter &FixItRewrite) {
const std::vector<ParsedSourceLocation> &Locs =
CI.getFrontendOpts().FixItLocations;
for (unsigned i = 0, e = Locs.size(); i != e; ++i) {
const FileEntry *File = CI.getFileManager().getFile(Locs[i].FileName);
if (!File) {
CI.getDiagnostics().Report(diag::err_fe_unable_to_find_fixit_file)
<< Locs[i].FileName;
return false;
}
RequestedSourceLocation Requested;
Requested.File = File;
Requested.Line = Locs[i].Line;
Requested.Column = Locs[i].Column;
FixItRewrite.addFixItLocation(Requested);
}
return true;
}
bool FixItAction::BeginSourceFileAction(CompilerInstance &CI,
llvm::StringRef Filename) {
Rewriter.reset(new FixItRewriter(CI.getDiagnostics(), CI.getSourceManager(),
CI.getLangOpts()));
if (!AddFixItLocations(CI, *Rewriter))
return false;
return true;
}
void FixItAction::EndSourceFileAction() {
const FrontendOptions &FEOpts = getCompilerInstance().getFrontendOpts();
Rewriter->WriteFixedFile(getCurrentFile(), FEOpts.OutputFile);
}
ASTConsumer *RewriteObjCAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
if (llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, InFile, "cpp"))
return CreateObjCRewriter(InFile, OS,
CI.getDiagnostics(), CI.getLangOpts(),
CI.getDiagnosticOpts().NoRewriteMacros);
return 0;
}
ASTConsumer *RewriteBlocksAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
return CreateBlockRewriter(InFile, CI.getDiagnostics(), CI.getLangOpts());
}
ASTConsumer *SyntaxOnlyAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
return new ASTConsumer();
}
CodeGenAction::CodeGenAction(unsigned _Act) : Act(_Act) {}
ASTConsumer *CodeGenAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
BackendAction BA = static_cast<BackendAction>(Act);
llvm::OwningPtr<llvm::raw_ostream> OS;
switch (BA) {
case Backend_EmitAssembly:
OS.reset(CI.createDefaultOutputFile(false, InFile, "s"));
break;
case Backend_EmitLL:
OS.reset(CI.createDefaultOutputFile(false, InFile, "ll"));
break;
case Backend_EmitBC:
OS.reset(CI.createDefaultOutputFile(true, InFile, "bc"));
break;
case Backend_EmitNothing:
break;
}
if (BA != Backend_EmitNothing && !OS)
return 0;
return CreateBackendConsumer(BA, CI.getDiagnostics(), CI.getLangOpts(),
CI.getCodeGenOpts(), CI.getTargetOpts(),
CI.getFrontendOpts().ShowTimers, InFile,
OS.take(), CI.getLLVMContext());
}
EmitAssemblyAction::EmitAssemblyAction()
: CodeGenAction(Backend_EmitAssembly) {}
EmitBCAction::EmitBCAction() : CodeGenAction(Backend_EmitBC) {}
EmitLLVMAction::EmitLLVMAction() : CodeGenAction(Backend_EmitLL) {}
EmitLLVMOnlyAction::EmitLLVMOnlyAction() : CodeGenAction(Backend_EmitNothing) {}
//===----------------------------------------------------------------------===//
// Preprocessor Actions
//===----------------------------------------------------------------------===//
void DumpRawTokensAction::ExecuteAction() {
Preprocessor &PP = getCompilerInstance().getPreprocessor();
SourceManager &SM = PP.getSourceManager();
// Start lexing the specified input file.
const llvm::MemoryBuffer *FromFile = SM.getBuffer(SM.getMainFileID());
Lexer RawLex(SM.getMainFileID(), FromFile, SM, PP.getLangOptions());
RawLex.SetKeepWhitespaceMode(true);
Token RawTok;
RawLex.LexFromRawLexer(RawTok);
while (RawTok.isNot(tok::eof)) {
PP.DumpToken(RawTok, true);
llvm::errs() << "\n";
RawLex.LexFromRawLexer(RawTok);
}
}
void DumpTokensAction::ExecuteAction() {
Preprocessor &PP = getCompilerInstance().getPreprocessor();
// Start preprocessing the specified input file.
Token Tok;
PP.EnterMainSourceFile();
do {
PP.Lex(Tok);
PP.DumpToken(Tok, true);
llvm::errs() << "\n";
} while (Tok.isNot(tok::eof));
}
void GeneratePTHAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
if (CI.getFrontendOpts().OutputFile.empty() ||
CI.getFrontendOpts().OutputFile == "-") {
// FIXME: Don't fail this way.
// FIXME: Verify that we can actually seek in the given file.
llvm::llvm_report_error("PTH requires a seekable file for output!");
}
llvm::raw_fd_ostream *OS =
CI.createDefaultOutputFile(true, getCurrentFile());
if (!OS) return;
CacheTokens(CI.getPreprocessor(), OS);
}
void ParseOnlyAction::ExecuteAction() {
Preprocessor &PP = getCompilerInstance().getPreprocessor();
llvm::OwningPtr<Action> PA(new MinimalAction(PP));
Parser P(PP, *PA);
PP.EnterMainSourceFile();
P.ParseTranslationUnit();
}
void PreprocessOnlyAction::ExecuteAction() {
Preprocessor &PP = getCompilerInstance().getPreprocessor();
Token Tok;
// Start parsing the specified input file.
PP.EnterMainSourceFile();
do {
PP.Lex(Tok);
} while (Tok.isNot(tok::eof));
}
void PrintParseAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
Preprocessor &PP = getCompilerInstance().getPreprocessor();
llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, getCurrentFile());
if (!OS) return;
llvm::OwningPtr<Action> PA(CreatePrintParserActionsAction(PP, OS));
Parser P(PP, *PA);
PP.EnterMainSourceFile();
P.ParseTranslationUnit();
}
void PrintPreprocessedAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, getCurrentFile());
if (!OS) return;
DoPrintPreprocessedInput(CI.getPreprocessor(), OS,
CI.getPreprocessorOutputOpts());
}
void RewriteMacrosAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
llvm::raw_ostream *OS = CI.createDefaultOutputFile(true, getCurrentFile());
if (!OS) return;
RewriteMacrosInInput(CI.getPreprocessor(), OS);
}
void RewriteTestAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, getCurrentFile());
if (!OS) return;
DoRewriteTest(CI.getPreprocessor(), OS);
}