Implement an infrastructure of Blink-in-JS

Source/bindings/v8/BlinkInJSController.cpp

+// Copyright 2014 The Chromium 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 "config.h"
+#include "bindings/v8/BlinkInJSController.h"
+
+#include "bindings/v8/V8Binding.h"
+#include "bindings/v8/V8PerIsolateData.h"
+#include "bindings/v8/V8ScriptRunner.h"
+#include "core/BlinkInJSSources.h"
+
+namespace WebCore {
+
+static v8::Handle<v8::Value> compileBlinkInJS(v8::Isolate* isolate, String className)

[abarth-chromium, 2014/06/20 15:17:43]

compilePrivateScript ?

+{
+    size_t index;
+    // |kBlinkInJSSources| is defined in V8BlinkInJSSources.h, which is auto-generated
+    // by make_blink_in_js.py.
+    for (index = 0; index < WTF_ARRAY_LENGTH(kBlinkInJSSources); index++) {

[abarth-chromium, 2014/06/20 15:17:42]

kPrivateScriptSources

+        if (className == kBlinkInJSSources[index].name)
+            break;

[abarth-chromium, 2014/06/20 15:17:43]

If we end up with a lot of these, we can probably do something smarter, but this
is fine for now.

+    }
+    RELEASE_ASSERT(index != WTF_ARRAY_LENGTH(kBlinkInJSSources));
+    String source(reinterpret_cast<const char*>(kBlinkInJSSources[index].source), kBlinkInJSSources[index].size);
+    return V8ScriptRunner::compileAndRunInternalScript(v8String(isolate, source), isolate);
+}
+
+v8::Handle<v8::Value> BlinkInJSController::run(v8::Isolate* isolate, String className, String functionName, v8::Handle<v8::Value> receiver, int argc, v8::Handle<v8::Value> argv[])
+{
+    ExecutionContext* executionContext = currentExecutionContext(isolate);
+    if (!executionContext)
+        return v8::Handle<v8::Value>();
+
+    v8::Handle<v8::Value> compiledClass = V8PerIsolateData::from(isolate)->compiledBlinkInJS(className);
+    if (compiledClass.IsEmpty()) {
+        v8::Handle<v8::Value> installedClasses = V8PerIsolateData::from(isolate)->compiledBlinkInJS("BlinkInJSController");
+        if (installedClasses.IsEmpty()) {
+            installedClasses = compileBlinkInJS(isolate, "BlinkInJSController");
+            V8PerIsolateData::from(isolate)->setCompiledBlinkInJS("BlinkInJSController", installedClasses);
+        }
+        RELEASE_ASSERT(!installedClasses.IsEmpty());
+        RELEASE_ASSERT(installedClasses->IsObject());
+
+        compileBlinkInJS(isolate, className);
+
+        compiledClass = v8::Handle<v8::Object>::Cast(installedClasses)->Get(v8String(isolate, className));
+        RELEASE_ASSERT(!compiledClass.IsEmpty());
+        RELEASE_ASSERT(compiledClass->IsObject());
+        V8PerIsolateData::from(isolate)->setCompiledBlinkInJS(className, compiledClass);
+    }
+
+    v8::Handle<v8::Value> function = v8::Handle<v8::Object>::Cast(compiledClass)->Get(v8String(isolate, functionName));
+    RELEASE_ASSERT(!function.IsEmpty());
+    RELEASE_ASSERT(function->IsFunction());
+
+    v8::Handle<v8::Value> result = V8ScriptRunner::callFunction(v8::Handle<v8::Function>::Cast(function), executionContext, receiver, argc, argv, isolate);
+    return result;
+}
+
+} // namespace WebCore