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//===-- DWARFAbbreviationDeclaration.cpp ------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "DWARFAbbreviationDeclaration.h"
#include "lldb/Core/dwarf.h"
#include "DWARFFormValue.h"
using namespace lldb_private;
DWARFAbbreviationDeclaration::DWARFAbbreviationDeclaration() :
m_code (InvalidCode),
m_tag (0),
m_has_children (0),
m_attributes()
{
}
DWARFAbbreviationDeclaration::DWARFAbbreviationDeclaration(dw_tag_t tag, uint8_t has_children) :
m_code (InvalidCode),
m_tag (tag),
m_has_children (has_children),
m_attributes()
{
}
bool
DWARFAbbreviationDeclaration::Extract(const DWARFDataExtractor& data, lldb::offset_t* offset_ptr)
{
return Extract(data, offset_ptr, data.GetULEB128(offset_ptr));
}
bool
DWARFAbbreviationDeclaration::Extract(const DWARFDataExtractor& data, lldb::offset_t *offset_ptr, dw_uleb128_t code)
{
m_code = code;
m_attributes.clear();
if (m_code)
{
m_tag = data.GetULEB128(offset_ptr);
m_has_children = data.GetU8(offset_ptr);
while (data.ValidOffset(*offset_ptr))
{
dw_attr_t attr = data.GetULEB128(offset_ptr);
dw_form_t form = data.GetULEB128(offset_ptr);
if (attr && form)
m_attributes.push_back(DWARFAttribute(attr, form));
else
break;
}
return m_tag != 0;
}
else
{
m_tag = 0;
m_has_children = 0;
}
return false;
}
void
DWARFAbbreviationDeclaration::Dump(Stream *s) const
{
s->Printf("Debug Abbreviation Declaration: code = 0x%4.4x, tag = %s, has_children = %s\n", m_code, DW_TAG_value_to_name(m_tag), DW_CHILDREN_value_to_name(m_has_children));
DWARFAttribute::const_iterator pos;
for (pos = m_attributes.begin(); pos != m_attributes.end(); ++pos)
s->Printf(" attr = %s, form = %s\n", DW_AT_value_to_name(pos->get_attr()), DW_FORM_value_to_name(pos->get_form()));
s->Printf("\n");
}
bool
DWARFAbbreviationDeclaration::IsValid()
{
return m_code != 0 && m_tag != 0;
}
uint32_t
DWARFAbbreviationDeclaration::FindAttributeIndex(dw_attr_t attr) const
{
uint32_t i;
const uint32_t kNumAttributes = m_attributes.size();
for (i = 0; i < kNumAttributes; ++i)
{
if (m_attributes[i].get_attr() == attr)
return i;
}
return DW_INVALID_INDEX;
}
bool
DWARFAbbreviationDeclaration::operator == (const DWARFAbbreviationDeclaration& rhs) const
{
return Tag() == rhs.Tag()
&& HasChildren() == rhs.HasChildren()
&& Attributes() == rhs.Attributes();
}
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