[inspector] extend protocol for code coverage.

src/runtime/runtime-debug.cc

 // Copyright 2014 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.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/compiler.h"
 #include "src/debug/debug-coverage.h"
 #include "src/debug/debug-evaluate.h"
@@ skipping 1873 matching lines @@
         isolate->debug()->NextAsyncTaskId(promise), 0);
   }
   return isolate->heap()->undefined_value();
 }
 
 RUNTIME_FUNCTION(Runtime_DebugIsActive) {
   SealHandleScope shs(isolate);
   return Smi::FromInt(isolate->debug()->is_active());
 }
 
-
 RUNTIME_FUNCTION(Runtime_DebugBreakInOptimizedCode) {
   UNIMPLEMENTED();
   return NULL;
 }
 
-namespace {
-Handle<JSObject> CreateRangeObject(Isolate* isolate, const CoverageRange* range,
-                                   Handle<String> inner_string,
-                                   Handle<String> start_string,
-                                   Handle<String> end_string,
-                                   Handle<String> count_string) {
-  HandleScope scope(isolate);
-  Factory* factory = isolate->factory();
-  Handle<JSObject> range_obj = factory->NewJSObjectWithNullProto();
-  JSObject::AddProperty(range_obj, start_string,
-                        factory->NewNumberFromInt(range->start), NONE);
-  JSObject::AddProperty(range_obj, end_string,
-                        factory->NewNumberFromInt(range->end), NONE);
-  JSObject::AddProperty(range_obj, count_string,
-                        factory->NewNumberFromUint(range->count), NONE);
-  JSObject::AddProperty(range_obj, factory->name_string(), range->name, NONE);
-  if (!range->inner.empty()) {
-    int size = static_cast<int>(range->inner.size());
-    Handle<FixedArray> inner_array = factory->NewFixedArray(size);
-    for (int i = 0; i < size; i++) {
-      Handle<JSObject> element =
-          CreateRangeObject(isolate, &range->inner[i], inner_string,
-                            start_string, end_string, count_string);
-      inner_array->set(i, *element);
-    }
-    Handle<JSArray> inner =
-        factory->NewJSArrayWithElements(inner_array, FAST_ELEMENTS);
-    JSObject::AddProperty(range_obj, inner_string, inner, NONE);
-  }
-  return scope.CloseAndEscape(range_obj);
-}
-}  // anonymous namespace
-
 RUNTIME_FUNCTION(Runtime_DebugCollectCoverage) {
   HandleScope scope(isolate);
   // Collect coverage data.
   std::unique_ptr<Coverage> coverage(Coverage::Collect(isolate));
   Factory* factory = isolate->factory();
   // Turn the returned data structure into JavaScript.
   // Create an array of scripts.
   int num_scripts = static_cast<int>(coverage->size());
   // Prepare property keys.
   Handle<FixedArray> scripts_array = factory->NewFixedArray(num_scripts);
   Handle<String> script_string = factory->NewStringFromStaticChars("script");
-  Handle<String> toplevel_string =
-      factory->NewStringFromStaticChars("toplevel");
   Handle<String> inner_string = factory->NewStringFromStaticChars("inner");
   Handle<String> start_string = factory->NewStringFromStaticChars("start");
   Handle<String> end_string = factory->NewStringFromStaticChars("end");
   Handle<String> count_string = factory->NewStringFromStaticChars("count");
   for (int i = 0; i < num_scripts; i++) {
-    const auto& data = coverage->at(i);
+    const auto& script_data = coverage->at(i);
     HandleScope inner_scope(isolate);
-    Handle<JSObject> script_obj = factory->NewJSObjectWithNullProto();
-    Handle<JSObject> wrapper = Script::GetWrapper(data.script);
+    int num_functions = static_cast<int>(script_data.functions.size());
+    Handle<FixedArray> functions_array = factory->NewFixedArray(num_functions);
+    for (int j = 0; j < num_functions; j++) {
+      const auto& function_data = script_data.functions[j];
+      Handle<JSObject> range_obj = factory->NewJSObjectWithNullProto();
+      JSObject::AddProperty(range_obj, start_string,
+                            factory->NewNumberFromInt(function_data.start),
+                            NONE);
+      JSObject::AddProperty(range_obj, end_string,
+                            factory->NewNumberFromInt(function_data.end), NONE);
+      JSObject::AddProperty(range_obj, count_string,
+                            factory->NewNumberFromUint(function_data.count),
+                            NONE);
+      functions_array->set(j, *range_obj);
+    }
+    Handle<JSArray> script_obj =
+        factory->NewJSArrayWithElements(functions_array, FAST_ELEMENTS);
+    Handle<JSObject> wrapper = Script::GetWrapper(script_data.script);
     JSObject::AddProperty(script_obj, script_string, wrapper, NONE);
-    Handle<JSObject> toplevel =
-        CreateRangeObject(isolate, &data.toplevel, inner_string, start_string,
-                          end_string, count_string);
-    JSObject::AddProperty(script_obj, toplevel_string, toplevel, NONE);
     scripts_array->set(i, *script_obj);
   }
   return *factory->NewJSArrayWithElements(scripts_array, FAST_ELEMENTS);
 }
 
 RUNTIME_FUNCTION(Runtime_DebugTogglePreciseCoverage) {
   SealHandleScope shs(isolate);
   CONVERT_BOOLEAN_ARG_CHECKED(enable, 0);
   Coverage::TogglePrecise(isolate, enable);
   return isolate->heap()->undefined_value();
 }
 
 }  // namespace internal
 }  // namespace v8