forked from OSchip/llvm-project
81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
//===----- CXXABI.h - Interface to C++ ABIs ---------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This provides an abstract class for C++ AST support. Concrete
|
|
// subclasses of this implement AST support for specific C++ ABIs.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CLANG_LIB_AST_CXXABI_H
|
|
#define LLVM_CLANG_LIB_AST_CXXABI_H
|
|
|
|
#include "clang/AST/Type.h"
|
|
|
|
namespace clang {
|
|
|
|
class ASTContext;
|
|
class CXXConstructorDecl;
|
|
class DeclaratorDecl;
|
|
class Expr;
|
|
class MemberPointerType;
|
|
class MangleNumberingContext;
|
|
|
|
/// Implements C++ ABI-specific semantic analysis functions.
|
|
class CXXABI {
|
|
public:
|
|
virtual ~CXXABI();
|
|
|
|
struct MemberPointerInfo {
|
|
uint64_t Width;
|
|
unsigned Align;
|
|
bool HasPadding;
|
|
};
|
|
|
|
/// Returns the width and alignment of a member pointer in bits, as well as
|
|
/// whether it has padding.
|
|
virtual MemberPointerInfo
|
|
getMemberPointerInfo(const MemberPointerType *MPT) const = 0;
|
|
|
|
/// Returns the default calling convention for C++ methods.
|
|
virtual CallingConv getDefaultMethodCallConv(bool isVariadic) const = 0;
|
|
|
|
/// Returns whether the given class is nearly empty, with just virtual
|
|
/// pointers and no data except possibly virtual bases.
|
|
virtual bool isNearlyEmpty(const CXXRecordDecl *RD) const = 0;
|
|
|
|
/// Returns a new mangling number context for this C++ ABI.
|
|
virtual std::unique_ptr<MangleNumberingContext>
|
|
createMangleNumberingContext() const = 0;
|
|
|
|
/// Adds a mapping from class to copy constructor for this C++ ABI.
|
|
virtual void addCopyConstructorForExceptionObject(CXXRecordDecl *,
|
|
CXXConstructorDecl *) = 0;
|
|
|
|
/// Retrieves the mapping from class to copy constructor for this C++ ABI.
|
|
virtual const CXXConstructorDecl *
|
|
getCopyConstructorForExceptionObject(CXXRecordDecl *) = 0;
|
|
|
|
virtual void addTypedefNameForUnnamedTagDecl(TagDecl *TD,
|
|
TypedefNameDecl *DD) = 0;
|
|
|
|
virtual TypedefNameDecl *
|
|
getTypedefNameForUnnamedTagDecl(const TagDecl *TD) = 0;
|
|
|
|
virtual void addDeclaratorForUnnamedTagDecl(TagDecl *TD,
|
|
DeclaratorDecl *DD) = 0;
|
|
|
|
virtual DeclaratorDecl *getDeclaratorForUnnamedTagDecl(const TagDecl *TD) = 0;
|
|
};
|
|
|
|
/// Creates an instance of a C++ ABI class.
|
|
CXXABI *CreateItaniumCXXABI(ASTContext &Ctx);
|
|
CXXABI *CreateMicrosoftCXXABI(ASTContext &Ctx);
|
|
}
|
|
|
|
#endif
|