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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
//===----- CXXABI.h - Interface to C++ ABIs ---------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This provides an abstract class for C++ AST support. Concrete
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// subclasses of this implement AST support for specific C++ ABIs.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_AST_CXXABI_H
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#define LLVM_CLANG_LIB_AST_CXXABI_H
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#include "clang/AST/Type.h"
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namespace clang {
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class ASTContext;
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class CXXConstructorDecl;
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class DeclaratorDecl;
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class Expr;
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class MemberPointerType;
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class MangleNumberingContext;
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/// Implements C++ ABI-specific semantic analysis functions.
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class CXXABI {
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public:
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virtual ~CXXABI();
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struct MemberPointerInfo {
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uint64_t Width;
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unsigned Align;
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bool HasPadding;
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};
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/// Returns the width and alignment of a member pointer in bits, as well as
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/// whether it has padding.
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virtual MemberPointerInfo
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getMemberPointerInfo(const MemberPointerType *MPT) const = 0;
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/// Returns the default calling convention for C++ methods.
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virtual CallingConv getDefaultMethodCallConv(bool isVariadic) const = 0;
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/// Returns whether the given class is nearly empty, with just virtual
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/// pointers and no data except possibly virtual bases.
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virtual bool isNearlyEmpty(const CXXRecordDecl *RD) const = 0;
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/// Returns a new mangling number context for this C++ ABI.
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virtual std::unique_ptr<MangleNumberingContext>
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createMangleNumberingContext() const = 0;
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/// Adds a mapping from class to copy constructor for this C++ ABI.
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virtual void addCopyConstructorForExceptionObject(CXXRecordDecl *,
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CXXConstructorDecl *) = 0;
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/// Retrieves the mapping from class to copy constructor for this C++ ABI.
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virtual const CXXConstructorDecl *
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getCopyConstructorForExceptionObject(CXXRecordDecl *) = 0;
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virtual void addTypedefNameForUnnamedTagDecl(TagDecl *TD,
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TypedefNameDecl *DD) = 0;
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virtual TypedefNameDecl *
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getTypedefNameForUnnamedTagDecl(const TagDecl *TD) = 0;
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virtual void addDeclaratorForUnnamedTagDecl(TagDecl *TD,
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DeclaratorDecl *DD) = 0;
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virtual DeclaratorDecl *getDeclaratorForUnnamedTagDecl(const TagDecl *TD) = 0;
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};
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/// Creates an instance of a C++ ABI class.
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CXXABI *CreateItaniumCXXABI(ASTContext &Ctx);
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CXXABI *CreateMicrosoftCXXABI(ASTContext &Ctx);
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}
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#endif
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