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//===-- UdtRecordCompleter.h ------------------------------------*- 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
//
//===----------------------------------------------------------------------===//
#ifndef LLDB_SOURCE_PLUGINS_SYMBOLFILE_NATIVEPDB_UDTRECORDCOMPLETER_H
#define LLDB_SOURCE_PLUGINS_SYMBOLFILE_NATIVEPDB_UDTRECORDCOMPLETER_H
#include "PdbAstBuilder.h"
#include "PdbSymUid.h"
#include "Plugins/ExpressionParser/Clang/ClangASTImporter.h"
#include "llvm/DebugInfo/CodeView/CVRecord.h"
#include "llvm/DebugInfo/CodeView/TypeRecord.h"
#include "llvm/DebugInfo/CodeView/TypeVisitorCallbacks.h"
#include <optional>
namespace clang {
class CXXBaseSpecifier;
class QualType;
class TagDecl;
} // namespace clang
namespace llvm {
namespace pdb {
class TpiStream;
class GlobalsStream;
}
} // namespace llvm
namespace lldb_private {
class Type;
class CompilerType;
namespace npdb {
class PdbAstBuilder;
class PdbIndex;
class UdtRecordCompleter : public llvm::codeview::TypeVisitorCallbacks {
using IndexedBase =
std::pair<uint64_t, std::unique_ptr<clang::CXXBaseSpecifier>>;
union UdtTagRecord {
UdtTagRecord() {}
llvm::codeview::UnionRecord ur;
llvm::codeview::ClassRecord cr;
llvm::codeview::EnumRecord er;
} m_cvr;
PdbTypeSymId m_id;
CompilerType &m_derived_ct;
clang::TagDecl &m_tag_decl;
PdbAstBuilder &m_ast_builder;
PdbIndex &m_index;
std::vector<IndexedBase> m_bases;
ClangASTImporter::LayoutInfo m_layout;
llvm::DenseMap<clang::Decl *, DeclStatus> &m_decl_to_status;
llvm::DenseMap<lldb::opaque_compiler_type_t,
llvm::SmallSet<std::pair<llvm::StringRef, CompilerType>, 8>>
&m_cxx_record_map;
public:
UdtRecordCompleter(
PdbTypeSymId id, CompilerType &derived_ct, clang::TagDecl &tag_decl,
PdbAstBuilder &ast_builder, PdbIndex &index,
llvm::DenseMap<clang::Decl *, DeclStatus> &decl_to_status,
llvm::DenseMap<lldb::opaque_compiler_type_t,
llvm::SmallSet<std::pair<llvm::StringRef, CompilerType>,
8>> &cxx_record_map);
#define MEMBER_RECORD(EnumName, EnumVal, Name) \
llvm::Error visitKnownMember(llvm::codeview::CVMemberRecord &CVR, \
llvm::codeview::Name##Record &Record) override;
#define MEMBER_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName)
#include "llvm/DebugInfo/CodeView/CodeViewTypes.def"
struct Member;
using MemberUP = std::unique_ptr<Member>;
struct Member {
enum Kind { Field, Struct, Union } kind;
// Following are only used for field.
llvm::StringRef name;
uint64_t bit_offset;
uint64_t bit_size;
clang::QualType qt;
lldb::AccessType access;
uint32_t bitfield_width;
// Following are Only used for struct or union.
uint64_t base_offset;
llvm::SmallVector<MemberUP, 1> fields;
Member() = default;
Member(Kind kind)
: kind(kind), name(), bit_offset(0), bit_size(0), qt(),
access(lldb::eAccessPublic), bitfield_width(0), base_offset(0) {}
Member(llvm::StringRef name, uint64_t bit_offset, uint64_t bit_size,
clang::QualType qt, lldb::AccessType access, uint32_t bitfield_width)
: kind(Field), name(name), bit_offset(bit_offset), bit_size(bit_size),
qt(qt), access(access), bitfield_width(bitfield_width),
base_offset(0) {}
void ConvertToStruct() {
kind = Struct;
base_offset = bit_offset;
fields.push_back(std::make_unique<Member>(name, bit_offset, bit_size, qt,
access, bitfield_width));
name = llvm::StringRef();
qt = clang::QualType();
access = lldb::eAccessPublic;
bit_offset = bit_size = bitfield_width = 0;
}
};
struct Record {
// Top level record.
Member record;
uint64_t start_offset = UINT64_MAX;
std::map<uint64_t, llvm::SmallVector<MemberUP, 1>> fields_map;
void CollectMember(llvm::StringRef name, uint64_t offset,
uint64_t field_size, clang::QualType qt,
lldb::AccessType access, uint64_t bitfield_width);
void ConstructRecord();
};
void complete();
private:
Record m_record;
clang::QualType AddBaseClassForTypeIndex(
llvm::codeview::TypeIndex ti, llvm::codeview::MemberAccess access,
std::optional<uint64_t> vtable_idx = std::optional<uint64_t>());
void AddMethod(llvm::StringRef name, llvm::codeview::TypeIndex type_idx,
llvm::codeview::MemberAccess access,
llvm::codeview::MethodOptions options,
llvm::codeview::MemberAttributes attrs);
void FinishRecord();
uint64_t AddMember(TypeSystemClang &clang, Member *field, uint64_t bit_offset,
CompilerType parent_ct,
ClangASTImporter::LayoutInfo &parent_layout,
clang::DeclContext *decl_ctx);
};
} // namespace npdb
} // namespace lldb_private
#endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_NATIVEPDB_UDTRECORDCOMPLETER_H
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