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0e4c482124
My apologies for the large patch. With the exception of ConstString.h itself it was entirely produced by sed. ConstString has exactly one const char * data member, so passing a ConstString by reference is not any more efficient than copying it by value. In both cases a single pointer is passed. But passing it by value makes it harder to accidentally return the address of a local object. (This fixes rdar://problem/48640859 for the Apple folks) Differential Revision: https://reviews.llvm.org/D59030 llvm-svn: 355553
95 lines
3.3 KiB
C++
95 lines
3.3 KiB
C++
//===-- ValueObjectCast.cpp -------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Core/ValueObjectCast.h"
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#include "lldb/Core/Value.h"
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#include "lldb/Core/ValueObject.h"
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#include "lldb/Symbol/CompilerType.h"
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#include "lldb/Target/ExecutionContext.h"
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#include "lldb/Utility/Scalar.h"
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#include "lldb/Utility/Status.h"
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namespace lldb_private {
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class ConstString;
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}
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using namespace lldb_private;
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lldb::ValueObjectSP ValueObjectCast::Create(ValueObject &parent,
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ConstString name,
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const CompilerType &cast_type) {
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ValueObjectCast *cast_valobj_ptr =
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new ValueObjectCast(parent, name, cast_type);
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return cast_valobj_ptr->GetSP();
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}
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ValueObjectCast::ValueObjectCast(ValueObject &parent, ConstString name,
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const CompilerType &cast_type)
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: ValueObject(parent), m_cast_type(cast_type) {
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SetName(name);
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// m_value.SetContext (Value::eContextTypeClangType,
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// cast_type.GetOpaqueQualType());
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m_value.SetCompilerType(cast_type);
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}
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ValueObjectCast::~ValueObjectCast() {}
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CompilerType ValueObjectCast::GetCompilerTypeImpl() { return m_cast_type; }
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size_t ValueObjectCast::CalculateNumChildren(uint32_t max) {
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ExecutionContext exe_ctx(GetExecutionContextRef());
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auto children_count = GetCompilerType().GetNumChildren(
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true, &exe_ctx);
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return children_count <= max ? children_count : max;
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}
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uint64_t ValueObjectCast::GetByteSize() {
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ExecutionContext exe_ctx(GetExecutionContextRef());
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return m_value.GetValueByteSize(nullptr, &exe_ctx);
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}
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lldb::ValueType ValueObjectCast::GetValueType() const {
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// Let our parent answer global, local, argument, etc...
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return m_parent->GetValueType();
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}
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bool ValueObjectCast::UpdateValue() {
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SetValueIsValid(false);
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m_error.Clear();
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if (m_parent->UpdateValueIfNeeded(false)) {
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Value old_value(m_value);
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m_update_point.SetUpdated();
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m_value = m_parent->GetValue();
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CompilerType compiler_type(GetCompilerType());
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// m_value.SetContext (Value::eContextTypeClangType, compiler_type);
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m_value.SetCompilerType(compiler_type);
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SetAddressTypeOfChildren(m_parent->GetAddressTypeOfChildren());
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if (!CanProvideValue()) {
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// this value object represents an aggregate type whose children have
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// values, but this object does not. So we say we are changed if our
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// location has changed.
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SetValueDidChange(m_value.GetValueType() != old_value.GetValueType() ||
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m_value.GetScalar() != old_value.GetScalar());
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}
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ExecutionContext exe_ctx(GetExecutionContextRef());
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m_error = m_value.GetValueAsData(&exe_ctx, m_data, 0, GetModule().get());
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SetValueDidChange(m_parent->GetValueDidChange());
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return true;
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}
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// The dynamic value failed to get an error, pass the error along
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if (m_error.Success() && m_parent->GetError().Fail())
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m_error = m_parent->GetError();
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SetValueIsValid(false);
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return false;
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}
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bool ValueObjectCast::IsInScope() { return m_parent->IsInScope(); }
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