clang API Documentation
00001 //===----- CXXABI.h - Interface to C++ ABIs ---------------------*- C++ -*-===// 00002 // 00003 // The LLVM Compiler Infrastructure 00004 // 00005 // This file is distributed under the University of Illinois Open Source 00006 // License. See LICENSE.TXT for details. 00007 // 00008 //===----------------------------------------------------------------------===// 00009 // 00010 // This provides an abstract class for C++ AST support. Concrete 00011 // subclasses of this implement AST support for specific C++ ABIs. 00012 // 00013 //===----------------------------------------------------------------------===// 00014 00015 #ifndef LLVM_CLANG_AST_CXXABI_H 00016 #define LLVM_CLANG_AST_CXXABI_H 00017 00018 #include "clang/AST/Type.h" 00019 00020 namespace clang { 00021 00022 class ASTContext; 00023 class MemberPointerType; 00024 00025 /// Implements C++ ABI-specific semantic analysis functions. 00026 class CXXABI { 00027 public: 00028 virtual ~CXXABI(); 00029 00030 /// Returns the size of a member pointer in multiples of the target 00031 /// pointer size. 00032 virtual unsigned getMemberPointerSize(const MemberPointerType *MPT) const = 0; 00033 00034 /// Returns the default calling convention for C++ methods. 00035 virtual CallingConv getDefaultMethodCallConv() const = 0; 00036 00037 // Returns whether the given class is nearly empty, with just virtual pointers 00038 // and no data except possibly virtual bases. 00039 virtual bool isNearlyEmpty(const CXXRecordDecl *RD) const = 0; 00040 }; 00041 00042 /// Creates an instance of a C++ ABI class. 00043 CXXABI *CreateARMCXXABI(ASTContext &Ctx); 00044 CXXABI *CreateItaniumCXXABI(ASTContext &Ctx); 00045 CXXABI *CreateMicrosoftCXXABI(ASTContext &Ctx); 00046 } 00047 00048 #endif