| //===-- 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 "DWARFUnit.h" |
| #include "DWARFDebugInfo.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 DWARFUnit *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 DWARFUnit *cu = CompileUnitAtIndex(i); |
| form_value.SetCompileUnit(cu); |
| form_value.SetForm(FormAtIndex(i)); |
| lldb::offset_t offset = DIEOffsetAtIndex(i); |
| return form_value.ExtractValue(cu->GetData(), &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; |
| } |