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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_DEBUG_DEBUG_FRAMES_H_
#define V8_DEBUG_DEBUG_FRAMES_H_
#include "src/deoptimizer.h"
#include "src/frames.h"
#include "src/isolate.h"
#include "src/objects.h"
namespace v8 {
namespace internal {
class FrameInspector {
public:
FrameInspector(JavaScriptFrame* frame, int inlined_jsframe_index,
Isolate* isolate);
~FrameInspector();
int GetParametersCount();
Object* GetFunction();
Object* GetParameter(int index);
Object* GetExpression(int index);
int GetSourcePosition();
bool IsConstructor();
Object* GetContext();
JavaScriptFrame* GetArgumentsFrame() { return frame_; }
void SetArgumentsFrame(JavaScriptFrame* frame);
void MaterializeStackLocals(Handle<JSObject> target,
Handle<ScopeInfo> scope_info);
void MaterializeStackLocals(Handle<JSObject> target,
Handle<JSFunction> function);
void UpdateStackLocalsFromMaterializedObject(Handle<JSObject> object,
Handle<ScopeInfo> scope_info);
private:
bool ParameterIsShadowedByContextLocal(Handle<ScopeInfo> info,
Handle<String> parameter_name);
JavaScriptFrame* frame_;
DeoptimizedFrameInfo* deoptimized_frame_;
Isolate* isolate_;
bool is_optimized_;
bool is_bottommost_;
bool has_adapted_arguments_;
DISALLOW_COPY_AND_ASSIGN(FrameInspector);
};
class DebugFrameHelper : public AllStatic {
public:
static SaveContext* FindSavedContextForFrame(Isolate* isolate,
JavaScriptFrame* frame);
// Advances the iterator to the frame that matches the index and returns the
// inlined frame index, or -1 if not found. Skips native JS functions.
static int FindIndexedNonNativeFrame(JavaScriptFrameIterator* it, int index);
// Helper functions for wrapping and unwrapping stack frame ids.
static Smi* WrapFrameId(StackFrame::Id id) {
DCHECK(IsAligned(OffsetFrom(id), static_cast<intptr_t>(4)));
return Smi::FromInt(id >> 2);
}
static StackFrame::Id UnwrapFrameId(int wrapped) {
return static_cast<StackFrame::Id>(wrapped << 2);
}
};
} // namespace internal
} // namespace v8
#endif // V8_DEBUG_DEBUG_FRAMES_H_
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