Implement an infrastructure of Blink-in-JS

Source/bindings/v8/PrivateScriptController.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/PrivateScriptController.h"
+
+#include "bindings/v8/V8Binding.h"
+#include "bindings/v8/V8PerIsolateData.h"
+#include "bindings/v8/V8ScriptRunner.h"
+#include "core/PrivateScriptSources.h"
+
+namespace WebCore {
+
+static v8::Handle<v8::Value> compilePrivateScript(v8::Isolate* isolate, String className)
+{
+    size_t index;
+    // |kPrivateScriptSources| is defined in V8PrivateScriptSources.h, which is auto-generated
+    // by make_private_script.py.
+    for (index = 0; index < WTF_ARRAY_LENGTH(kPrivateScriptSources); index++) {
+        if (className == kPrivateScriptSources[index].name)
+            break;
+    }
+    RELEASE_ASSERT(index != WTF_ARRAY_LENGTH(kPrivateScriptSources));
+    String source(reinterpret_cast<const char*>(kPrivateScriptSources[index].source), kPrivateScriptSources[index].size);
+    return V8ScriptRunner::compileAndRunInternalScript(v8String(isolate, source), isolate);
+}
+
+v8::Handle<v8::Value> PrivateScriptController::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)->compiledPrivateScript(className);
+    if (compiledClass.IsEmpty()) {
+        v8::Handle<v8::Value> installedClasses = V8PerIsolateData::from(isolate)->compiledPrivateScript("PrivateScriptController");
+        if (installedClasses.IsEmpty()) {
+            installedClasses = compilePrivateScript(isolate, "PrivateScriptController");
+            V8PerIsolateData::from(isolate)->setCompiledPrivateScript("PrivateScriptController", installedClasses);
+        }
+        RELEASE_ASSERT(!installedClasses.IsEmpty());
+        RELEASE_ASSERT(installedClasses->IsObject());
+
+        compilePrivateScript(isolate, className);
+
+        compiledClass = v8::Handle<v8::Object>::Cast(installedClasses)->Get(v8String(isolate, className));
+        RELEASE_ASSERT(!compiledClass.IsEmpty());
+        RELEASE_ASSERT(compiledClass->IsObject());
+        V8PerIsolateData::from(isolate)->setCompiledPrivateScript(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