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//===--- Utils.h - Misc utilities for the front-end -------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This header contains miscellaneous utilities for various front-end actions.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_FRONTEND_UTILS_H
#define LLVM_CLANG_FRONTEND_UTILS_H
#include "clang/Basic/Diagnostic.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/Support/raw_ostream.h"
namespace llvm {
class Triple;
}
namespace clang {
class ASTConsumer;
class CompilerInstance;
class CompilerInvocation;
class Decl;
class DependencyOutputOptions;
class Diagnostic;
class DiagnosticOptions;
class FileManager;
class HeaderSearch;
class HeaderSearchOptions;
class IdentifierTable;
class LangOptions;
class Preprocessor;
class PreprocessorOptions;
class PreprocessorOutputOptions;
class SourceManager;
class Stmt;
class TargetInfo;
class FrontendOptions;
/// Normalize \arg File for use in a user defined #include directive (in the
/// predefines buffer).
std::string NormalizeDashIncludePath(llvm::StringRef File,
FileManager &FileMgr);
/// Apply the header search options to get given HeaderSearch object.
void ApplyHeaderSearchOptions(HeaderSearch &HS,
const HeaderSearchOptions &HSOpts,
const LangOptions &Lang,
const llvm::Triple &triple);
/// InitializePreprocessor - Initialize the preprocessor getting it and the
/// environment ready to process a single file.
void InitializePreprocessor(Preprocessor &PP,
const PreprocessorOptions &PPOpts,
const HeaderSearchOptions &HSOpts,
const FrontendOptions &FEOpts);
/// ProcessWarningOptions - Initialize the diagnostic client and process the
/// warning options specified on the command line.
void ProcessWarningOptions(Diagnostic &Diags, const DiagnosticOptions &Opts);
/// DoPrintPreprocessedInput - Implement -E mode.
void DoPrintPreprocessedInput(Preprocessor &PP, llvm::raw_ostream* OS,
const PreprocessorOutputOptions &Opts);
/// CheckDiagnostics - Gather the expected diagnostics and check them.
bool CheckDiagnostics(Preprocessor &PP);
/// AttachDependencyFileGen - Create a dependency file generator, and attach
/// it to the given preprocessor. This takes ownership of the output stream.
void AttachDependencyFileGen(Preprocessor &PP,
const DependencyOutputOptions &Opts);
/// AttachHeaderIncludeGen - Create a header include list generator, and attach
/// it to the given preprocessor.
///
/// \param ShowAllHeaders - If true, show all header information instead of just
/// headers following the predefines buffer. This is useful for making sure
/// includes mentioned on the command line are also reported, but differs from
/// the default behavior used by -H.
/// \param OutputPath - If non-empty, a path to write the header include
/// information to, instead of writing to stderr.
void AttachHeaderIncludeGen(Preprocessor &PP, bool ShowAllHeaders = false,
llvm::StringRef OutputPath = "",
bool ShowDepth = true);
/// CacheTokens - Cache tokens for use with PCH. Note that this requires
/// a seekable stream.
void CacheTokens(Preprocessor &PP, llvm::raw_fd_ostream* OS);
/// createInvocationFromCommandLine - Construct a compiler invocation object for
/// a command line argument vector.
///
/// \return A CompilerInvocation, or 0 if none was built for the given
/// argument vector.
CompilerInvocation *
createInvocationFromCommandLine(llvm::ArrayRef<const char *> Args,
llvm::IntrusiveRefCntPtr<Diagnostic> Diags =
llvm::IntrusiveRefCntPtr<Diagnostic>());
} // end namespace clang
#endif
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