Initial checkin of lldb code from internal Apple repo.
llvm-svn: 105619
diff --git a/lldb/source/Core/ValueObjectVariable.cpp b/lldb/source/Core/ValueObjectVariable.cpp
new file mode 100644
index 0000000..0b94535
--- /dev/null
+++ b/lldb/source/Core/ValueObjectVariable.cpp
@@ -0,0 +1,167 @@
+//===-- ValueObjectVariable.cpp ---------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+
+#include "lldb/Core/ValueObjectVariable.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "lldb/Core/Module.h"
+#include "lldb/Core/ValueObjectList.h"
+#include "lldb/Core/Value.h"
+
+#include "lldb/Symbol/ObjectFile.h"
+#include "lldb/Symbol/SymbolContext.h"
+#include "lldb/Symbol/Type.h"
+#include "lldb/Symbol/Variable.h"
+
+#include "lldb/Target/ExecutionContext.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/RegisterContext.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Target/Thread.h"
+
+#include "clang/AST/Type.h"
+
+
+using namespace lldb_private;
+
+ValueObjectVariable::ValueObjectVariable (lldb::VariableSP &var_sp) :
+ ValueObject(),
+ m_variable_sp(var_sp)
+{
+ // Do not attempt to construct one of these objects with no variable!
+ assert (m_variable_sp.get() != NULL);
+ m_name = var_sp->GetName();
+}
+
+ValueObjectVariable::~ValueObjectVariable()
+{
+}
+
+void *
+ValueObjectVariable::GetOpaqueClangQualType ()
+{
+ Type *var_type = m_variable_sp->GetType();
+ if (var_type)
+ return var_type->GetOpaqueClangQualType();
+ return NULL;
+}
+
+ConstString
+ValueObjectVariable::GetTypeName()
+{
+ Type * var_type = m_variable_sp->GetType();
+ if (var_type)
+ return var_type->GetName();
+ ConstString empty_type_name;
+ return empty_type_name;
+}
+
+uint32_t
+ValueObjectVariable::CalculateNumChildren()
+{
+ Type *var_type = m_variable_sp->GetType();
+ if (var_type)
+ return var_type->GetNumChildren(true);
+ return 0;
+}
+
+clang::ASTContext *
+ValueObjectVariable::GetClangAST ()
+{
+ return m_variable_sp->GetType()->GetClangAST();
+}
+
+size_t
+ValueObjectVariable::GetByteSize()
+{
+ return m_variable_sp->GetType()->GetByteSize();
+}
+
+lldb::ValueType
+ValueObjectVariable::GetValueType() const
+{
+ if (m_variable_sp)
+ return m_variable_sp->GetScope();
+ return lldb::eValueTypeInvalid;
+}
+
+
+
+void
+ValueObjectVariable::UpdateValue (ExecutionContextScope *exe_scope)
+{
+ SetValueIsValid (false);
+ m_error.Clear();
+
+ Variable *variable = m_variable_sp.get();
+ DWARFExpression &expr = variable->LocationExpression();
+ Value old_value(m_value);
+ ExecutionContext exe_ctx (exe_scope);
+ if (expr.Evaluate (&exe_ctx, GetClangAST(), NULL, m_value, &m_error))
+ {
+ m_value.SetContext(Value::eContextTypeDCVariable, variable);
+
+ Value::ValueType value_type = m_value.GetValueType();
+
+ switch (value_type)
+ {
+ default:
+ assert(!"Unhandled expression result value kind...");
+ break;
+
+ case Value::eValueTypeScalar:
+ // The variable value is in the Scalar value inside the m_value.
+ // We can point our m_data right to it.
+ m_error = m_value.GetValueAsData (&exe_ctx, GetClangAST(), m_data, 0);
+ break;
+
+ case Value::eValueTypeFileAddress:
+ case Value::eValueTypeLoadAddress:
+ case Value::eValueTypeHostAddress:
+ // The DWARF expression result was an address in the inferior
+ // process. If this variable is an aggregate type, we just need
+ // the address as the main value as all child variable objects
+ // will rely upon this location and add an offset and then read
+ // their own values as needed. If this variable is a simple
+ // type, we read all data for it into m_data.
+ // Make sure this type has a value before we try and read it
+ if (ClangASTContext::IsAggregateType (GetOpaqueClangQualType()))
+ {
+ // this value object represents an aggregate type whose
+ // children have values, but this object does not. So we
+ // say we are changed if our location has changed.
+ SetValueDidChange (value_type != old_value.GetValueType() || m_value.GetScalar() != old_value.GetScalar());
+ }
+ else
+ {
+ // Copy the Value and set the context to use our Variable
+ // so it can extract read its value into m_data appropriately
+ Value value(m_value);
+ value.SetContext(Value::eContextTypeDCVariable, variable);
+ m_error = value.GetValueAsData(&exe_ctx, GetClangAST(), m_data, 0);
+ }
+ break;
+ }
+
+ SetValueIsValid (m_error.Success());
+ }
+}
+
+
+
+bool
+ValueObjectVariable::IsInScope (StackFrame *frame)
+{
+ return m_variable_sp->IsInScope (frame);
+}
+