clang  3.7.0
CXXABI.h
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1 //===----- CXXABI.h - Interface to C++ ABIs ---------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This provides an abstract class for C++ AST support. Concrete
11 // subclasses of this implement AST support for specific C++ ABIs.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_CLANG_LIB_AST_CXXABI_H
16 #define LLVM_CLANG_LIB_AST_CXXABI_H
17 
18 #include "clang/AST/Type.h"
19 
20 namespace clang {
21 
22 class ASTContext;
23 class CXXConstructorDecl;
24 class Expr;
25 class MemberPointerType;
26 class MangleNumberingContext;
27 
28 /// Implements C++ ABI-specific semantic analysis functions.
29 class CXXABI {
30 public:
31  virtual ~CXXABI();
32 
33  /// Returns the width and alignment of a member pointer in bits.
34  virtual std::pair<uint64_t, unsigned>
36 
37  /// Returns the default calling convention for C++ methods.
38  virtual CallingConv getDefaultMethodCallConv(bool isVariadic) const = 0;
39 
40  /// Returns whether the given class is nearly empty, with just virtual
41  /// pointers and no data except possibly virtual bases.
42  virtual bool isNearlyEmpty(const CXXRecordDecl *RD) const = 0;
43 
44  /// Returns a new mangling number context for this C++ ABI.
46 
47  /// Adds a mapping from class to copy constructor for this C++ ABI.
49  CXXConstructorDecl *) = 0;
50 
51  /// Retrieves the mapping from class to copy constructor for this C++ ABI.
52  virtual const CXXConstructorDecl *
54 
56  unsigned ParmIdx, Expr *DAE) = 0;
57 
59  unsigned ParmIdx) = 0;
60 };
61 
62 /// Creates an instance of a C++ ABI class.
65 }
66 
67 #endif
CXXABI * CreateMicrosoftCXXABI(ASTContext &Ctx)
Represents a C++ constructor within a class.
Definition: DeclCXX.h:2147
virtual const CXXConstructorDecl * getCopyConstructorForExceptionObject(CXXRecordDecl *)=0
Retrieves the mapping from class to copy constructor for this C++ ABI.
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:89
Keeps track of the mangled names of lambda expressions and block literals within a particular context...
virtual CallingConv getDefaultMethodCallConv(bool isVariadic) const =0
Returns the default calling convention for C++ methods.
CXXABI * CreateItaniumCXXABI(ASTContext &Ctx)
Creates an instance of a C++ ABI class.
Implements C++ ABI-specific semantic analysis functions.
Definition: CXXABI.h:29
CallingConv
CallingConv - Specifies the calling convention that a function uses.
Definition: Specifiers.h:204
virtual bool isNearlyEmpty(const CXXRecordDecl *RD) const =0
virtual void addDefaultArgExprForConstructor(const CXXConstructorDecl *CD, unsigned ParmIdx, Expr *DAE)=0
virtual Expr * getDefaultArgExprForConstructor(const CXXConstructorDecl *CD, unsigned ParmIdx)=0
virtual ~CXXABI()
virtual void addCopyConstructorForExceptionObject(CXXRecordDecl *, CXXConstructorDecl *)=0
Adds a mapping from class to copy constructor for this C++ ABI.
Represents a C++ struct/union/class.
Definition: DeclCXX.h:285
virtual std::pair< uint64_t, unsigned > getMemberPointerWidthAndAlign(const MemberPointerType *MPT) const =0
Returns the width and alignment of a member pointer in bits.
virtual MangleNumberingContext * createMangleNumberingContext() const =0
Returns a new mangling number context for this C++ ABI.