69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
//===- ASTRecordLayoutBuilder.h - Helper class for building record layouts ===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_AST_RECORDLAYOUTBUILDER_H
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#define LLVM_CLANG_AST_RECORDLAYOUTBUILDER_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/Support/DataTypes.h"
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namespace clang {
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class ASTContext;
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class ASTRecordLayout;
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class CXXRecordDecl;
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class FieldDecl;
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class ObjCImplementationDecl;
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class ObjCInterfaceDecl;
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class RecordDecl;
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class ASTRecordLayoutBuilder {
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ASTContext &Ctx;
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uint64_t Size;
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uint64_t Alignment;
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llvm::SmallVector<uint64_t, 16> FieldOffsets;
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unsigned StructPacking;
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unsigned NextOffset;
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bool IsUnion;
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ASTRecordLayoutBuilder(ASTContext &Ctx);
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void Layout(const RecordDecl *D);
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void Layout(const CXXRecordDecl *D);
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void Layout(const ObjCInterfaceDecl *D,
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const ObjCImplementationDecl *Impl);
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void LayoutFields(const RecordDecl *D);
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void LayoutField(const FieldDecl *D);
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void LayoutNonVirtualBases(const CXXRecordDecl *RD);
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void LayoutNonVirtualBase(const CXXRecordDecl *RD);
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/// FinishLayout - Finalize record layout. Adjust record size based on the
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/// alignment.
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void FinishLayout();
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void UpdateAlignment(unsigned NewAlignment);
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ASTRecordLayoutBuilder(const ASTRecordLayoutBuilder&); // DO NOT IMPLEMENT
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void operator=(const ASTRecordLayoutBuilder&); // DO NOT IMPLEMENT
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public:
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static const ASTRecordLayout *ComputeLayout(ASTContext &Ctx,
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const RecordDecl *RD);
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static const ASTRecordLayout *ComputeLayout(ASTContext &Ctx,
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const ObjCInterfaceDecl *D,
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const ObjCImplementationDecl *Impl);
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};
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} // end namespace clang
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#endif
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