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8f92f0a35c
debug information and you evaluated an expression, a crash would occur as a
result of an unchecked pointer.
Added the ability to get the expression path for a ValueObject. For a rectangle
point child "x" the expression path would be something like: "rect.top_left.x".
This will allow GUI and command lines to get ahold of the expression path for
a value object without having to explicitly know about the hierarchy. This
means the ValueObject base class now has a "ValueObject *m_parent;" member.
All ValueObject subclasses now correctly track their lineage and are able
to provide value expression paths as well.
Added a new "--flat" option to the "frame variable" to allow for flat variable
output. An example of the current and new outputs:
(lldb) frame variable
argc = 1
argv = 0x00007fff5fbffe80
pt = {
x = 2
y = 3
}
rect = {
bottom_left = {
x = 1
y = 2
}
top_right = {
x = 3
y = 4
}
}
(lldb) frame variable --flat
argc = 1
argv = 0x00007fff5fbffe80
pt.x = 2
pt.y = 3
rect.bottom_left.x = 1
rect.bottom_left.y = 2
rect.top_right.x = 3
rect.top_right.y = 4
As you can see when there is a lot of hierarchy it can help flatten things out.
Also if you want to use a member in an expression, you can copy the text from
the "--flat" output and not have to piece it together manually. This can help
when you want to use parts of the STL in expressions:
(lldb) frame variable --flat
argc = 1
argv = 0x00007fff5fbffea8
hello_world._M_dataplus._M_p = 0x0000000000000000
(lldb) expr hello_world._M_dataplus._M_p[0] == '\0'
llvm-svn: 116532
120 lines
2.8 KiB
C++
120 lines
2.8 KiB
C++
//===-- ValueObjectConstResult.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 "lldb/Core/ValueObjectConstResult.h"
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#include "lldb/Core/DataExtractor.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/ValueObjectList.h"
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#include "lldb/Symbol/ClangASTType.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Symbol/SymbolContext.h"
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#include "lldb/Symbol/Type.h"
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#include "lldb/Symbol/Variable.h"
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#include "lldb/Target/ExecutionContext.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/Target.h"
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using namespace lldb;
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using namespace lldb_private;
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ValueObjectConstResult::ValueObjectConstResult
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(
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clang::ASTContext *clang_ast,
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void *clang_type,
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const ConstString &name,
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const lldb::DataBufferSP &data_sp,
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lldb::ByteOrder data_byte_order,
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uint8_t data_addr_size
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) :
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ValueObject (NULL),
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m_clang_ast (clang_ast),
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m_type_name ()
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{
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m_data.SetByteOrder(data_byte_order);
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m_data.SetAddressByteSize(data_addr_size);
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m_data.SetData(data_sp);
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m_value.GetScalar() = (uintptr_t)data_sp->GetBytes();
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m_value.SetValueType(Value::eValueTypeHostAddress);
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m_value.SetContext(Value::eContextTypeOpaqueClangQualType, clang_type);
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m_name = name;
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SetIsConstant ();
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}
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ValueObjectConstResult::ValueObjectConstResult (const Error& error) :
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ValueObject (NULL),
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m_clang_ast (NULL),
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m_type_name ()
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{
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m_error = error;
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SetIsConstant ();
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}
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ValueObjectConstResult::~ValueObjectConstResult()
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{
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}
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void *
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ValueObjectConstResult::GetClangType()
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{
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return m_value.GetClangType();
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}
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lldb::ValueType
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ValueObjectConstResult::GetValueType() const
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{
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return eValueTypeConstResult;
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}
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size_t
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ValueObjectConstResult::GetByteSize()
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{
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// We stored all the data for this const object in our data
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return m_data.GetByteSize();
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}
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uint32_t
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ValueObjectConstResult::CalculateNumChildren()
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{
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return ClangASTContext::GetNumChildren (GetClangType(), true);
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}
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clang::ASTContext *
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ValueObjectConstResult::GetClangAST ()
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{
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return m_clang_ast;
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}
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ConstString
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ValueObjectConstResult::GetTypeName()
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{
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if (m_type_name.IsEmpty())
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m_type_name = ClangASTType::GetClangTypeName (GetClangType());
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return m_type_name;
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}
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void
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ValueObjectConstResult::UpdateValue (ExecutionContextScope *exe_scope)
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{
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m_error.Clear();
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// Const value is always valid
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SetValueIsValid (true);
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}
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bool
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ValueObjectConstResult::IsInScope (StackFrame *frame)
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{
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// A const result value is always in scope since it serializes all
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// information needed to contain the constant value.
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return true;
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}
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