Revert of Refactor script position calculation

src/accessors.cc

 // 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.
 
 #include "src/accessors.h"
 
 #include "src/api.h"
 #include "src/contexts.h"
 #include "src/deoptimizer.h"
 #include "src/execution.h"
@@ skipping 420 matching lines @@
 Handle<AccessorInfo> Accessors::ScriptCompilationTypeInfo(
       Isolate* isolate, PropertyAttributes attributes) {
   Handle<String> name(isolate->factory()->InternalizeOneByteString(
       STATIC_CHAR_VECTOR("compilation_type")));
   return MakeAccessor(isolate, name, &ScriptCompilationTypeGetter, nullptr,
                       attributes);
 }
 
 
 //
+// Accessors::ScriptGetLineEnds
+//
+
+
+void Accessors::ScriptLineEndsGetter(
+    v8::Local<v8::Name> name,
+    const v8::PropertyCallbackInfo<v8::Value>& info) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
+  HandleScope scope(isolate);
+  Handle<Object> object = Utils::OpenHandle(*info.Holder());
+  Handle<Script> script(
+      Script::cast(Handle<JSValue>::cast(object)->value()), isolate);
+  Script::InitLineEnds(script);
+  DCHECK(script->line_ends()->IsFixedArray());
+  Handle<FixedArray> line_ends(FixedArray::cast(script->line_ends()));
+  // We do not want anyone to modify this array from JS.
+  DCHECK(*line_ends == isolate->heap()->empty_fixed_array() ||
+         line_ends->map() == isolate->heap()->fixed_cow_array_map());
+  Handle<JSArray> js_array =
+      isolate->factory()->NewJSArrayWithElements(line_ends);
+  info.GetReturnValue().Set(Utils::ToLocal(js_array));
+}
+
+
+Handle<AccessorInfo> Accessors::ScriptLineEndsInfo(
+      Isolate* isolate, PropertyAttributes attributes) {
+  Handle<String> name(isolate->factory()->InternalizeOneByteString(
+      STATIC_CHAR_VECTOR("line_ends")));
+  return MakeAccessor(isolate, name, &ScriptLineEndsGetter, nullptr,
+                      attributes);
+}
+
+
+//
 // Accessors::ScriptSourceUrl
 //
 
 
 void Accessors::ScriptSourceUrlGetter(
     v8::Local<v8::Name> name,
     const v8::PropertyCallbackInfo<v8::Value>& info) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
   DisallowHeapAllocation no_allocation;
   HandleScope scope(isolate);
@@ skipping 695 matching lines @@
   Isolate* isolate = name->GetIsolate();
   Handle<AccessorInfo> info = MakeAccessor(isolate, name, &ModuleGetExport,
                                            &ModuleSetExport, attributes);
   info->set_data(Smi::FromInt(index));
   return info;
 }
 
 
 }  // namespace internal
 }  // namespace v8