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//===--- LangOptions.h - C Language Family Language Options -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the LangOptions interface.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LANGOPTIONS_H
#define LLVM_CLANG_LANGOPTIONS_H
#include "llvm/Bitcode/SerializationFwd.h"
namespace clang {
/// LangOptions - This class keeps track of the various options that can be
/// enabled, which controls the dialect of C that is accepted.
class LangOptions {
public:
unsigned Trigraphs : 1; // Trigraphs in source files.
unsigned BCPLComment : 1; // BCPL-style '//' comments.
unsigned DollarIdents : 1; // '$' allowed in identifiers.
unsigned AsmPreprocessor : 1; // Preprocessor in asm mode.
unsigned ImplicitInt : 1; // C89 implicit 'int'.
unsigned Digraphs : 1; // C94, C99 and C++
unsigned HexFloats : 1; // C99 Hexadecimal float constants.
unsigned C99 : 1; // C99 Support
unsigned Microsoft : 1; // Microsoft extensions.
unsigned CPlusPlus : 1; // C++ Support
unsigned CPlusPlus0x : 1; // C++0x Support
unsigned NoExtensions : 1; // All extensions are disabled, strict mode.
unsigned CXXOperatorNames : 1; // Treat C++ operator names as keywords.
unsigned ObjC1 : 1; // Objective-C 1 support enabled.
unsigned ObjC2 : 1; // Objective-C 2 support enabled.
unsigned ObjCNonFragileABI : 1; // Objective-C modern abi enabled
unsigned PascalStrings : 1; // Allow Pascal strings
unsigned Boolean : 1; // Allow bool/true/false
unsigned WritableStrings : 1; // Allow writable strings
unsigned LaxVectorConversions : 1;
unsigned Exceptions : 1; // Support exception handling.
unsigned NeXTRuntime : 1; // Use NeXT runtime.
unsigned Freestanding : 1; // Freestanding implementation
unsigned ThreadsafeStatics : 1; // Whether static initializers are protected
// by locks.
unsigned Blocks : 1; // block extension to C
unsigned EmitAllDecls : 1; // Emit all declarations, even if
// they are unused.
unsigned MathErrno : 1; // Math functions must respect errno
// (modulo the platform support).
private:
unsigned GC : 2; // Objective-C Garbage Collection modes. We declare
// this enum as unsigned because MSVC insists on making enums
// signed. Set/Query this value using accessors.
public:
enum GCMode { NonGC, GCOnly, HybridGC };
LangOptions() {
Trigraphs = BCPLComment = DollarIdents = AsmPreprocessor = 0;
ImplicitInt = Digraphs = 0;
HexFloats = 0;
GC = ObjC1 = ObjC2 = ObjCNonFragileABI = 0;
C99 = Microsoft = CPlusPlus = CPlusPlus0x = NoExtensions = 0;
CXXOperatorNames = PascalStrings = Boolean = WritableStrings = 0;
Exceptions = NeXTRuntime = Freestanding = 0;
LaxVectorConversions = 1;
// FIXME: The default should be 1.
ThreadsafeStatics = 0;
Blocks = 0;
EmitAllDecls = 0;
MathErrno = 1;
}
GCMode getGCMode() const { return (GCMode) GC; }
void setGCMode(GCMode m) { GC = (unsigned) m; }
/// Emit - Emit this LangOptions object to bitcode.
void Emit(llvm::Serializer& S) const;
/// Read - Read new values for this LangOption object from bitcode.
void Read(llvm::Deserializer& S);
};
} // end namespace clang
#endif
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