Use a custom Struct for stack trace storage

src/messages.h

 // Copyright 2006-2008 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.
 
 // The infrastructure used for (localized) message reporting in V8.
 //
 // Note: there's a big unresolved issue about ownership of the data
 // structures used by this framework.
 
 #ifndef V8_MESSAGES_H_
@@ skipping 24 matching lines @@
   int end_pos() const { return end_pos_; }
   Handle<JSFunction> function() const { return function_; }
 
  private:
   Handle<Script> script_;
   int start_pos_;
   int end_pos_;
   Handle<JSFunction> function_;
 };
 
-
-class CallSite {
- public:
-  CallSite(Isolate* isolate, Handle<JSObject> call_site_obj);
-
-  Handle<Object> GetFileName();
-  Handle<Object> GetFunctionName();
-  Handle<Object> GetScriptNameOrSourceUrl();
-  Handle<Object> GetMethodName();
-  Handle<Object> GetTypeName();
-  Handle<Object> GetEvalOrigin();
-  // Return 1-based line number, including line offset.
-  int GetLineNumber();
-  // Return 1-based column number, including column offset if first line.
-  int GetColumnNumber();
-  bool IsNative();
-  bool IsToplevel();
-  bool IsEval();
-  bool IsConstructor();
-
-  bool IsJavaScript() { return !fun_.is_null(); }
-  bool IsWasm() { return !wasm_obj_.is_null(); }
-
-  int wasm_func_index() const { return wasm_func_index_; }
-
- private:
-  Isolate* isolate_;
-  Handle<Object> receiver_;
-  Handle<JSFunction> fun_;
-  int32_t pos_ = -1;
-  Handle<JSObject> wasm_obj_;
-  uint32_t wasm_func_index_ = static_cast<uint32_t>(-1);
-};
-
 // Determines how stack trace collection skips frames.
 enum FrameSkipMode {
   // Unconditionally skips the first frame. Used e.g. when the Error constructor
   // is called, in which case the first frame is always a BUILTIN_EXIT frame.
   SKIP_FIRST,
   // Skip all frames until a specified caller function is seen.
   SKIP_UNTIL_SEEN,
   SKIP_NONE,
 };
 
@@ skipping 11 matching lines @@
       Handle<Object> arg0, Handle<Object> arg1, Handle<Object> arg2,
       FrameSkipMode mode);
 
   // Formats a textual stack trace from the given structured stack trace.
   // Note that this can call arbitrary JS code through Error.prepareStackTrace.
   static MaybeHandle<Object> FormatStackTrace(Isolate* isolate,
                                               Handle<JSObject> error,
                                               Handle<Object> stack_trace);
 };
 
-class CallSiteUtils : public AllStatic {
- public:
-  static MaybeHandle<Object> Construct(Isolate* isolate,
-                                       Handle<Object> receiver,
-                                       Handle<Object> fun, Handle<Object> pos,
-                                       Handle<Object> strict_mode);
-
-  static MaybeHandle<String> ToString(Isolate* isolate, Handle<Object> recv);
-};
-
 #define MESSAGE_TEMPLATES(T)                                                   \
   /* Error */                                                                  \
   T(None, "")                                                                  \
   T(CyclicProto, "Cyclic __proto__ value")                                     \
   T(Debugger, "Debugger: %")                                                   \
   T(DebuggerLoading, "Error loading debugger")                                 \
   T(DefaultOptionsMissing, "Internal % error. Default options are missing.")   \
   T(UncaughtException, "Uncaught %")                                           \
   T(Unsupported, "Not supported")                                              \
   T(WrongServiceType, "Internal error, wrong service type: %")                 \
@@ skipping 451 matching lines @@
   static Handle<String> GetMessage(Isolate* isolate, Handle<Object> data);
   static std::unique_ptr<char[]> GetLocalizedMessage(Isolate* isolate,
                                                      Handle<Object> data);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_MESSAGES_H_