mirror of
https://github.com/opnsense/src.git
synced 2026-05-28 04:12:45 -04:00
61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
//===--- LayoutOverrideSource.h --Override Record Layouts -----------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CLANG_FRONTEND_LAYOUTOVERRIDESOURCE_H
|
|
#define LLVM_CLANG_FRONTEND_LAYOUTOVERRIDESOURCE_H
|
|
|
|
#include "clang/AST/ExternalASTSource.h"
|
|
#include "llvm/ADT/StringMap.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
|
|
namespace clang {
|
|
/// \brief An external AST source that overrides the layout of
|
|
/// a specified set of record types.
|
|
///
|
|
/// This class is used only for testing the ability of external AST sources
|
|
/// to override the layout of record types. Its input is the output format
|
|
/// of the command-line argument -fdump-record-layouts.
|
|
class LayoutOverrideSource : public ExternalASTSource {
|
|
/// \brief The layout of a given record.
|
|
struct Layout {
|
|
/// \brief The size of the record.
|
|
uint64_t Size;
|
|
|
|
/// \brief The alignment of the record.
|
|
uint64_t Align;
|
|
|
|
/// \brief The offsets of the fields, in source order.
|
|
llvm::SmallVector<uint64_t, 8> FieldOffsets;
|
|
};
|
|
|
|
/// \brief The set of layouts that will be overridden.
|
|
llvm::StringMap<Layout> Layouts;
|
|
|
|
public:
|
|
/// \brief Create a new AST source that overrides the layout of some
|
|
/// set of record types.
|
|
///
|
|
/// The file is the result of passing -fdump-record-layouts to a file.
|
|
explicit LayoutOverrideSource(llvm::StringRef Filename);
|
|
|
|
/// \brief If this particular record type has an overridden layout,
|
|
/// return that layout.
|
|
virtual bool
|
|
layoutRecordType(const RecordDecl *Record,
|
|
uint64_t &Size, uint64_t &Alignment,
|
|
llvm::DenseMap<const FieldDecl *, uint64_t> &FieldOffsets,
|
|
llvm::DenseMap<const CXXRecordDecl *, CharUnits> &BaseOffsets,
|
|
llvm::DenseMap<const CXXRecordDecl *, CharUnits> &VirtualBaseOffsets);
|
|
|
|
/// \brief Dump the overridden layouts.
|
|
void dump();
|
|
};
|
|
}
|
|
|
|
#endif
|