uint64_t
GoASTContext::GetBitSize(lldb::opaque_compiler_type_t type, ExecutionContextScope *exe_scope)
{
if (!type)
return 0;
if (!GetCompleteType(type))
return 0;
GoType *t = static_cast<GoType *>(type);
GoArray *array = nullptr;
switch (t->GetGoKind())
{
case GoType::KIND_BOOL:
case GoType::KIND_INT8:
case GoType::KIND_UINT8:
return 8;
case GoType::KIND_INT16:
case GoType::KIND_UINT16:
return 16;
case GoType::KIND_INT32:
case GoType::KIND_UINT32:
case GoType::KIND_FLOAT32:
return 32;
case GoType::KIND_INT64:
case GoType::KIND_UINT64:
case GoType::KIND_FLOAT64:
case GoType::KIND_COMPLEX64:
return 64;
case GoType::KIND_COMPLEX128:
return 128;
case GoType::KIND_INT:
case GoType::KIND_UINT:
return m_int_byte_size * 8;
case GoType::KIND_UINTPTR:
case GoType::KIND_FUNC: // I assume this is a pointer?
case GoType::KIND_CHAN:
case GoType::KIND_PTR:
case GoType::KIND_UNSAFEPOINTER:
case GoType::KIND_MAP:
return m_pointer_byte_size * 8;
case GoType::KIND_ARRAY:
array = t->GetArray();
return array->GetLength() * array->GetElementType().GetBitSize(exe_scope);
case GoType::KIND_INTERFACE:
return t->GetElementType().GetBitSize(exe_scope);
case GoType::KIND_SLICE:
case GoType::KIND_STRING:
case GoType::KIND_STRUCT:
return t->GetStruct()->GetByteSize() * 8;
default:
assert(false);
}
return 0;
}
bool
GoASTContext::GetCompleteType(lldb::opaque_compiler_type_t type)
{
if (!type)
return false;
GoType *t = static_cast<GoType *>(type);
if (t->IsTypedef() || t->GetGoKind() == GoType::KIND_PTR || t->GetArray())
return t->GetElementType().GetCompleteType();
if (GoStruct *s = t->GetStruct())
{
if (s->IsComplete())
return true;
CompilerType compiler_type(this, s);
SymbolFile *symbols = GetSymbolFile();
return symbols && symbols->CompleteType(compiler_type);
}
return true;
}
uint32_t
GoASTContext::GetNumChildren(lldb::opaque_compiler_type_t type, bool omit_empty_base_classes)
{
if (!type || !GetCompleteType(type))
return 0;
GoType *t = static_cast<GoType *>(type);
if (t->GetGoKind() == GoType::KIND_PTR)
{
CompilerType elem = t->GetElementType();
if (elem.IsAggregateType())
return elem.GetNumChildren(omit_empty_base_classes);
return 1;
}
else if (GoArray *array = t->GetArray())
{
return array->GetLength();
}
else if (t->IsTypedef())
{
return t->GetElementType().GetNumChildren(omit_empty_base_classes);
}
return GetNumFields(type);
}
CompilerType
GoASTContext::GetChildCompilerTypeAtIndex(lldb::opaque_compiler_type_t type, ExecutionContext *exe_ctx, size_t idx, bool transparent_pointers,
bool omit_empty_base_classes, bool ignore_array_bounds, std::string &child_name,
uint32_t &child_byte_size, int32_t &child_byte_offset,
uint32_t &child_bitfield_bit_size, uint32_t &child_bitfield_bit_offset,
bool &child_is_base_class, bool &child_is_deref_of_parent, ValueObject *valobj, uint64_t &language_flags)
{
child_name.clear();
child_byte_size = 0;
child_byte_offset = 0;
child_bitfield_bit_size = 0;
child_bitfield_bit_offset = 0;
child_is_base_class = false;
child_is_deref_of_parent = false;
language_flags = 0;
if (!type || !GetCompleteType(type))
return CompilerType();
GoType *t = static_cast<GoType *>(type);
if (t->GetStruct())
{
uint64_t bit_offset;
CompilerType ret = GetFieldAtIndex(type, idx, child_name, &bit_offset, nullptr, nullptr);
child_byte_size = ret.GetByteSize(exe_ctx ? exe_ctx->GetBestExecutionContextScope() : nullptr);
child_byte_offset = bit_offset / 8;
return ret;
}
else if (t->GetGoKind() == GoType::KIND_PTR)
{
CompilerType pointee = t->GetElementType();
if (!pointee.IsValid() || pointee.IsVoidType())
return CompilerType();
if (transparent_pointers && pointee.IsAggregateType())
{
bool tmp_child_is_deref_of_parent = false;
return pointee.GetChildCompilerTypeAtIndex(exe_ctx, idx, transparent_pointers, omit_empty_base_classes,
ignore_array_bounds, child_name, child_byte_size, child_byte_offset,
child_bitfield_bit_size, child_bitfield_bit_offset,
child_is_base_class, tmp_child_is_deref_of_parent, valobj, language_flags);
}
else
{
child_is_deref_of_parent = true;
const char *parent_name = valobj ? valobj->GetName().GetCString() : NULL;
if (parent_name)
{
child_name.assign(1, '*');
child_name += parent_name;
}
// We have a pointer to an simple type
if (idx == 0 && pointee.GetCompleteType())
{
child_byte_size = pointee.GetByteSize(exe_ctx ? exe_ctx->GetBestExecutionContextScope() : NULL);
child_byte_offset = 0;
return pointee;
}
}
}
else if (GoArray *a = t->GetArray())
{
if (ignore_array_bounds || idx < a->GetLength())
{
CompilerType element_type = a->GetElementType();
if (element_type.GetCompleteType())
{
char element_name[64];
::snprintf(element_name, sizeof(element_name), "[%zu]", idx);
child_name.assign(element_name);
child_byte_size = element_type.GetByteSize(exe_ctx ? exe_ctx->GetBestExecutionContextScope() : NULL);
child_byte_offset = (int32_t)idx * (int32_t)child_byte_size;
return element_type;
}
}
}
else if (t->IsTypedef())
{
return t->GetElementType().GetChildCompilerTypeAtIndex(
exe_ctx, idx, transparent_pointers, omit_empty_base_classes, ignore_array_bounds, child_name,
child_byte_size, child_byte_offset, child_bitfield_bit_size, child_bitfield_bit_offset, child_is_base_class,
child_is_deref_of_parent, valobj, language_flags);
}
return CompilerType();
}
