本文整理汇总了C++中DWARFDIE::IsValid方法的典型用法代码示例。如果您正苦于以下问题：C++ DWARFDIE::IsValid方法的具体用法？C++ DWARFDIE::IsValid怎么用？C++ DWARFDIE::IsValid使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DWARFDIE的用法示例。
在下文中一共展示了DWARFDIE::IsValid方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: switch
void
DWARFASTParserGo::ParseChildArrayInfo(const SymbolContext &sc, const DWARFDIE &parent_die, int64_t &first_index,
std::vector<uint64_t> &element_orders, uint32_t &byte_stride,
uint32_t &bit_stride)
{
if (!parent_die)
return;
for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling())
{
const dw_tag_t tag = die.Tag();
switch (tag)
{
case DW_TAG_subrange_type:
{
DWARFAttributes attributes;
const size_t num_child_attributes = die.GetAttributes(attributes);
if (num_child_attributes > 0)
{
uint64_t num_elements = 0;
uint32_t i;
for (i = 0; i < num_child_attributes; ++i)
{
const dw_attr_t attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(i, form_value))
{
switch (attr)
{
case DW_AT_count:
num_elements = form_value.Unsigned();
break;
default:
case DW_AT_type:
break;
}
}
}
element_orders.push_back(num_elements);
}
}
break;
}
}
}示例2: if
DWARFDIE
DWARFDIE::GetContainingDWOModuleDIE () const
{
if (IsValid())
{
DWARFDIE top_module_die;
// Now make sure this DIE is scoped in a DW_TAG_module tag and return true if so
for (DWARFDIE parent = GetParent(); parent.IsValid(); parent = parent.GetParent())
{
const dw_tag_t tag = parent.Tag();
if (tag == DW_TAG_module)
top_module_die = parent;
else if (tag == DW_TAG_compile_unit)
break;
}
return top_module_die;
}
return DWARFDIE();
}示例3: initialValue
size_t
DWARFASTParserGo::ParseChildMembers(const SymbolContext &sc, const DWARFDIE &parent_die, CompilerType &class_compiler_type)
{
size_t count = 0;
uint32_t member_idx = 0;
ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule();
GoASTContext *ast = llvm::dyn_cast_or_null<GoASTContext>(class_compiler_type.GetTypeSystem());
if (ast == nullptr)
return 0;
for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling())
{
dw_tag_t tag = die.Tag();
switch (tag)
{
case DW_TAG_member:
{
DWARFAttributes attributes;
const size_t num_attributes = die.GetAttributes(attributes);
if (num_attributes > 0)
{
Declaration decl;
const char *name = NULL;
lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
uint32_t member_byte_offset = UINT32_MAX;
uint32_t i;
for (i = 0; i < num_attributes; ++i)
{
const dw_attr_t attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(i, form_value))
{
switch (attr)
{
case DW_AT_name:
name = form_value.AsCString();
break;
case DW_AT_type:
encoding_uid = form_value.Reference();
break;
case DW_AT_data_member_location:
if (form_value.BlockData())
{
Value initialValue(0);
Value memberOffset(0);
const DWARFDataExtractor &debug_info_data =
die.GetDWARF()->get_debug_info_data();
uint32_t block_length = form_value.Unsigned();
uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
if (DWARFExpression::Evaluate(NULL, // ExecutionContext *
NULL, // ClangExpressionVariableList *
NULL, // ClangExpressionDeclMap *
NULL, // RegisterContext *
module_sp, debug_info_data, die.GetCU(),
block_offset, block_length, eRegisterKindDWARF,
&initialValue, NULL, memberOffset, NULL))
{
member_byte_offset = memberOffset.ResolveValue(NULL).UInt();
}
}
else
{
// With DWARF 3 and later, if the value is an integer constant,
// this form value is the offset in bytes from the beginning
// of the containing entity.
member_byte_offset = form_value.Unsigned();
}
break;
default:
break;
}
}
}
Type *member_type = die.ResolveTypeUID(encoding_uid);
if (member_type)
{
CompilerType member_go_type = member_type->GetFullCompilerType();
ConstString name_const_str(name);
m_ast.AddFieldToStruct(class_compiler_type, name_const_str, member_go_type, member_byte_offset);
}
}
++member_idx;
}
break;
default:
break;
}
}
return count;
}示例4: member_location_expression
void
DWARFASTParserJava::ParseChildMembers(const DWARFDIE &parent_die, CompilerType &compiler_type)
{
DWARFCompileUnit *dwarf_cu = parent_die.GetCU();
for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling())
{
switch (die.Tag())
{
case DW_TAG_member:
{
const char *name = nullptr;
DWARFFormValue encoding_uid;
uint32_t member_byte_offset = UINT32_MAX;
DWARFExpression member_location_expression(dwarf_cu);
bool artificial = true;
DWARFAttributes attributes;
size_t num_attributes = die.GetAttributes(attributes);
for (size_t i = 0; i < num_attributes; ++i)
{
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(i, form_value))
{
switch (attributes.AttributeAtIndex(i))
{
case DW_AT_name:
name = form_value.AsCString();
break;
case DW_AT_type:
encoding_uid = form_value;
break;
case DW_AT_data_member_location:
if (form_value.BlockData())
member_location_expression.CopyOpcodeData(
form_value.BlockData(), form_value.Unsigned(), dwarf_cu->GetByteOrder(),
dwarf_cu->GetAddressByteSize());
else
member_byte_offset = form_value.Unsigned();
break;
case DW_AT_artificial:
artificial = form_value.Boolean();
break;
case DW_AT_accessibility:
// TODO: Handle when needed
break;
default:
assert(false && "Unhandled attribute for DW_TAG_member");
break;
}
}
}
if (strcmp(name, ".dynamic_type") == 0)
m_ast.SetDynamicTypeId(compiler_type, member_location_expression);
else
{
if (Type *member_type = die.ResolveTypeUID(DIERef(encoding_uid)))
m_ast.AddMemberToObject(compiler_type, ConstString(name), member_type->GetFullCompilerType(),
member_byte_offset);
}
break;
}
case DW_TAG_inheritance:
{
DWARFFormValue encoding_uid;
uint32_t member_byte_offset = UINT32_MAX;
DWARFAttributes attributes;
size_t num_attributes = die.GetAttributes(attributes);
for (size_t i = 0; i < num_attributes; ++i)
{
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(i, form_value))
{
switch (attributes.AttributeAtIndex(i))
{
case DW_AT_type:
encoding_uid = form_value;
break;
case DW_AT_data_member_location:
member_byte_offset = form_value.Unsigned();
break;
case DW_AT_accessibility:
// In java all base class is public so we can ignore this attribute
break;
default:
assert(false && "Unhandled attribute for DW_TAG_member");
break;
}
}
}
if (Type *base_type = die.ResolveTypeUID(DIERef(encoding_uid)))
m_ast.AddBaseClassToObject(compiler_type, base_type->GetFullCompilerType(), member_byte_offset);
break;
}
default:
break;
}
}
}