Reland of "Store SharedFunctionInfos of a Script in a FixedArray indexed by their ID"

src/debug/liveedit.h

 // Copyright 2012 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_LIVEEDIT_H_
 #define V8_DEBUG_LIVEEDIT_H_
 
 
 // Live Edit feature implementation.
 // User should be able to change script on already running VM. This feature
@@ skipping 65 matching lines @@
 
   static bool SetAfterBreakTarget(Debug* debug);
 
   MUST_USE_RESULT static MaybeHandle<JSArray> GatherCompileInfo(
       Handle<Script> script,
       Handle<String> source);
 
   static void ReplaceFunctionCode(Handle<JSArray> new_compile_info_array,
                                   Handle<JSArray> shared_info_array);
 
-  static void FunctionSourceUpdated(Handle<JSArray> shared_info_array);
+  static void FixupScript(Handle<Script> script, int max_function_literal_id);
+
+  static void FunctionSourceUpdated(Handle<JSArray> shared_info_array,
+                                    int new_function_literal_id);
 
   // Updates script field in FunctionSharedInfo.
   static void SetFunctionScript(Handle<JSValue> function_wrapper,
                                 Handle<Object> script_handle);
 
   static void PatchFunctionPositions(Handle<JSArray> shared_info_array,
                                      Handle<JSArray> position_change_array);
 
   // For a script updates its source field. If old_script_name is provided
   // (i.e. is a String), also creates a copy of the script with its original
@@ skipping 174 matching lines @@
 // from JavaScript. It contains Code object, which is kept wrapped
 // into a BlindReference for sanitizing reasons.
 class FunctionInfoWrapper : public JSArrayBasedStruct<FunctionInfoWrapper> {
  public:
   explicit FunctionInfoWrapper(Handle<JSArray> array)
       : JSArrayBasedStruct<FunctionInfoWrapper>(array) {
   }
 
   void SetInitialProperties(Handle<String> name, int start_position,
                             int end_position, int param_num, int literal_count,
-                            int parent_index);
+                            int parent_index, int function_literal_id);
 
   void SetFunctionScopeInfo(Handle<Object> scope_info_array) {
     this->SetField(kFunctionScopeInfoOffset_, scope_info_array);
   }
 
   void SetSharedFunctionInfo(Handle<SharedFunctionInfo> info);
 
   Handle<SharedFunctionInfo> GetSharedFunctionInfo();
 
   int GetLiteralCount() {
@@ skipping 12 matching lines @@
 
  private:
   static const int kFunctionNameOffset_ = 0;
   static const int kStartPositionOffset_ = 1;
   static const int kEndPositionOffset_ = 2;
   static const int kParamNumOffset_ = 3;
   static const int kFunctionScopeInfoOffset_ = 4;
   static const int kParentIndexOffset_ = 5;
   static const int kSharedFunctionInfoOffset_ = 6;
   static const int kLiteralNumOffset_ = 7;
-  static const int kSize_ = 8;
+  static const int kFunctionLiteralIdOffset_ = 8;
+  static const int kSize_ = 9;
 
   friend class JSArrayBasedStruct<FunctionInfoWrapper>;
 };
 
 
 // Wraps SharedFunctionInfo along with some of its fields for passing it
 // back to JavaScript. SharedFunctionInfo object itself is additionally
 // wrapped into BlindReference for sanitizing reasons.
 class SharedInfoWrapper : public JSArrayBasedStruct<SharedInfoWrapper> {
  public:
@@ skipping 24 matching lines @@
   static const int kSharedInfoOffset_ = 3;
   static const int kSize_ = 4;
 
   friend class JSArrayBasedStruct<SharedInfoWrapper>;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif /* V8_DEBUG_LIVEEDIT_H_ */