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