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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 {
// Forward declaration:
namespace wasm {
class InterpretedFrame;
}
class FrameInspector {
public:
FrameInspector(StandardFrame* frame, int inlined_frame_index,
Isolate* isolate);
~FrameInspector();
int GetParametersCount();
Handle<JSFunction> GetFunction() { return function_; }
Handle<Script> GetScript() { return script_; }
Handle<Object> GetParameter(int index);
Handle<Object> GetExpression(int index);
int GetSourcePosition() { return source_position_; }
bool IsConstructor() { return is_constructor_; }
Handle<Object> GetContext();
Handle<Object> GetReceiver() { return receiver_; }
Handle<String> GetFunctionName() { return function_name_; }
bool IsWasm();
bool IsJavaScript();
inline JavaScriptFrame* javascript_frame() {
return frame_->is_arguments_adaptor() ? ArgumentsAdaptorFrame::cast(frame_)
: JavaScriptFrame::cast(frame_);
}
JavaScriptFrame* GetArgumentsFrame() { return javascript_frame(); }
void SetArgumentsFrame(StandardFrame* frame);
void MaterializeStackLocals(Handle<JSObject> target,
Handle<ScopeInfo> scope_info,
bool materialize_arguments_object = false);
void MaterializeStackLocals(Handle<JSObject> target,
Handle<JSFunction> function,
bool materialize_arguments_object = false);
void UpdateStackLocalsFromMaterializedObject(Handle<JSObject> object,
Handle<ScopeInfo> scope_info);
private:
bool ParameterIsShadowedByContextLocal(Handle<ScopeInfo> info,
Handle<String> parameter_name);
StandardFrame* frame_;
std::unique_ptr<DeoptimizedFrameInfo> deoptimized_frame_;
std::unique_ptr<wasm::InterpretedFrame> wasm_interpreted_frame_;
Isolate* isolate_;
Handle<Script> script_;
Handle<Object> receiver_;
Handle<JSFunction> function_;
Handle<String> function_name_;
int source_position_ = -1;
bool is_optimized_ = false;
bool is_interpreted_ = false;
bool has_adapted_arguments_ = false;
bool is_constructor_ = false;
DISALLOW_COPY_AND_ASSIGN(FrameInspector);
};
class DebugFrameHelper : public AllStatic {
public:
static SaveContext* FindSavedContextForFrame(Isolate* isolate,
StandardFrame* 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(StackTraceFrameIterator* 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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