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//===-- DIERef.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 SymbolFileDWARF_DIERef_h_
#define SymbolFileDWARF_DIERef_h_
#include "lldb/Core/dwarf.h"
#include "lldb/lldb-defines.h"
class DWARFFormValue;
class SymbolFileDWARF;
struct DIERef {
DIERef() = default;
DIERef(dw_offset_t c, dw_offset_t d) : cu_offset(c), die_offset(d) {}
//----------------------------------------------------------------------
// In order to properly decode a lldb::user_id_t back into a DIERef we
// need the DWARF file since it knows if DWARF in .o files is being used
// (MacOSX) or if DWO files are being used. The encoding of the user ID
// differs between the two types of DWARF.
//----------------------------------------------------------------------
explicit DIERef(lldb::user_id_t uid, SymbolFileDWARF *dwarf);
explicit DIERef(const DWARFFormValue &form_value);
//----------------------------------------------------------------------
// In order to properly encode a DIERef unto a lldb::user_id_t we need
// the DWARF file since it knows if DWARF in .o files is being used
// (MacOSX) or if DWO files are being used. The encoding of the user ID
// differs between the two types of DWARF.
//----------------------------------------------------------------------
lldb::user_id_t GetUID(SymbolFileDWARF *dwarf) const;
bool operator<(const DIERef &ref) const {
return die_offset < ref.die_offset;
}
bool operator<(const DIERef &ref) { return die_offset < ref.die_offset; }
explicit operator bool() const {
return cu_offset != DW_INVALID_OFFSET || die_offset != DW_INVALID_OFFSET;
}
dw_offset_t cu_offset = DW_INVALID_OFFSET;
dw_offset_t die_offset = DW_INVALID_OFFSET;
};
typedef std::vector<DIERef> DIEArray;
#endif // SymbolFileDWARF_DIERef_h_
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