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      1 // Copyright 2015 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef V8_DEBUG_DEBUG_FRAMES_H_
      6 #define V8_DEBUG_DEBUG_FRAMES_H_
      7 
      8 #include "src/deoptimizer.h"
      9 #include "src/frames.h"
     10 #include "src/isolate.h"
     11 #include "src/objects.h"
     12 #include "src/wasm/wasm-interpreter.h"
     13 
     14 namespace v8 {
     15 namespace internal {
     16 
     17 class FrameInspector {
     18  public:
     19   FrameInspector(StandardFrame* frame, int inlined_frame_index,
     20                  Isolate* isolate);
     21 
     22   ~FrameInspector();
     23 
     24   int GetParametersCount();
     25   Handle<JSFunction> GetFunction() const { return function_; }
     26   Handle<Script> GetScript() { return script_; }
     27   Handle<Object> GetParameter(int index);
     28   Handle<Object> GetExpression(int index);
     29   int GetSourcePosition() { return source_position_; }
     30   bool IsConstructor() { return is_constructor_; }
     31   Handle<Object> GetContext();
     32   Handle<Object> GetReceiver() { return receiver_; }
     33 
     34   Handle<String> GetFunctionName() { return function_name_; }
     35 
     36   bool IsWasm();
     37   bool IsJavaScript();
     38 
     39   inline JavaScriptFrame* javascript_frame() {
     40     return frame_->is_arguments_adaptor() ? ArgumentsAdaptorFrame::cast(frame_)
     41                                           : JavaScriptFrame::cast(frame_);
     42   }
     43 
     44   int inlined_frame_index() const { return inlined_frame_index_; }
     45 
     46  private:
     47   bool ParameterIsShadowedByContextLocal(Handle<ScopeInfo> info,
     48                                          Handle<String> parameter_name);
     49 
     50   StandardFrame* frame_;
     51   int inlined_frame_index_;
     52   std::unique_ptr<DeoptimizedFrameInfo> deoptimized_frame_;
     53   wasm::WasmInterpreter::FramePtr wasm_interpreted_frame_;
     54   Isolate* isolate_;
     55   Handle<Script> script_;
     56   Handle<Object> receiver_;
     57   Handle<JSFunction> function_;
     58   Handle<String> function_name_;
     59   int source_position_ = -1;
     60   bool is_optimized_ = false;
     61   bool is_interpreted_ = false;
     62   bool has_adapted_arguments_ = false;
     63   bool is_constructor_ = false;
     64 
     65   DISALLOW_COPY_AND_ASSIGN(FrameInspector);
     66 };
     67 }  // namespace internal
     68 }  // namespace v8
     69 
     70 #endif  // V8_DEBUG_DEBUG_FRAMES_H_
     71