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//===-- DWARFAttribute.cpp --------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "DWARFAttribute.h"
#include "DWARFDebugInfo.h"
#include "DWARFCompileUnit.h"
DWARFAttributes::DWARFAttributes() :
m_infos()
{
}
DWARFAttributes::~DWARFAttributes()
{
}
uint32_t
DWARFAttributes::FindAttributeIndex(dw_attr_t attr) const
{
collection::const_iterator end = m_infos.end();
collection::const_iterator beg = m_infos.begin();
collection::const_iterator pos;
for (pos = beg; pos != end; ++pos)
{
if (pos->attr.get_attr() == attr)
return std::distance(beg, pos);
}
return UINT32_MAX;
}
void
DWARFAttributes::Append(const DWARFCompileUnit *cu, dw_offset_t attr_die_offset, dw_attr_t attr, dw_form_t form)
{
AttributeValue attr_value = { cu, attr_die_offset, { attr, form } };
m_infos.push_back(attr_value);
}
bool
DWARFAttributes::ContainsAttribute(dw_attr_t attr) const
{
return FindAttributeIndex(attr) != UINT32_MAX;
}
bool
DWARFAttributes::RemoveAttribute(dw_attr_t attr)
{
uint32_t attr_index = FindAttributeIndex(attr);
if (attr_index != UINT32_MAX)
{
m_infos.erase(m_infos.begin() + attr_index);
return true;
}
return false;
}
bool
DWARFAttributes::ExtractFormValueAtIndex (uint32_t i, DWARFFormValue &form_value) const
{
const DWARFCompileUnit *cu = CompileUnitAtIndex(i);
form_value.SetCompileUnit(cu);
form_value.SetForm(FormAtIndex(i));
lldb::offset_t offset = DIEOffsetAtIndex(i);
return form_value.ExtractValue(cu->GetSymbolFileDWARF()->get_debug_info_data(), &offset);
}
uint64_t
DWARFAttributes::FormValueAsUnsigned (dw_attr_t attr, uint64_t fail_value) const
{
const uint32_t attr_idx = FindAttributeIndex (attr);
if (attr_idx != UINT32_MAX)
return FormValueAsUnsignedAtIndex (attr_idx, fail_value);
return fail_value;
}
uint64_t
DWARFAttributes::FormValueAsUnsignedAtIndex(uint32_t i, uint64_t fail_value) const
{
DWARFFormValue form_value;
if (ExtractFormValueAtIndex(i, form_value))
return form_value.Reference();
return fail_value;
}
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