Mojo: Reimplement unicode.js in JavaScript, remove native implementation.

This version is likely less efficient, but doesn't require gin.

BUG=372065

Review URL: https://codereview.chromium.org/294123008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@275342 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/webui/web_ui_data_source_impl.cc

@@ -35,6 +35,7 @@ WebUIDataSource* WebUIDataSource::AddMojoDataSource(
     { mojo::kConnectionModuleName, IDR_MOJO_CONNECTION_JS },
     { mojo::kConnectorModuleName, IDR_MOJO_CONNECTOR_JS },
     { mojo::kRouterModuleName, IDR_MOJO_ROUTER_JS },
+    { mojo::kUnicodeModuleName, IDR_MOJO_UNICODE_JS },
   };
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(resources); ++i)
     mojo_source->AddResourcePath(resources[i].path, resources[i].id);

content/browser/webui/web_ui_mojo_browsertest.cc

@@ -39,6 +39,7 @@ bool GetResource(const std::string& id,
   if (id == mojo::kCodecModuleName ||
       id == mojo::kConnectionModuleName ||
       id == mojo::kConnectorModuleName ||
+      id == mojo::kUnicodeModuleName ||
       id == mojo::kRouterModuleName)
     return false;
 

content/content_resources.grd

@@ -43,6 +43,7 @@
         <include name="IDR_MOJO_CONNECTION_JS" file="../mojo/public/js/bindings/connection.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_MOJO_CONNECTOR_JS" file="../mojo/public/js/bindings/connector.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_MOJO_ROUTER_JS" file="../mojo/public/js/bindings/router.js" flattenhtml="true" type="BINDATA" />
+        <include name="IDR_MOJO_UNICODE_JS" file="../mojo/public/js/bindings/unicode.js" flattenhtml="true" type="BINDATA" />
       </if>
     </includes>
   </release>

content/renderer/web_ui_runner.cc

@@ -9,7 +9,6 @@
 #include "gin/public/context_holder.h"
 #include "mojo/bindings/js/core.h"
 #include "mojo/bindings/js/support.h"
-#include "mojo/bindings/js/unicode.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebScriptSource.h"
 
@@ -48,10 +47,6 @@ void WebUIRunner::RegisterBuiltinModules() {
                              mojo::js::Support::kModuleName,
                              mojo::js::Support::GetModule(
                                  context_holder_->isolate()));
-  registry->AddBuiltinModule(context_holder_->isolate(),
-                             mojo::js::Unicode::kModuleName,
-                             mojo::js::Unicode::GetModule(
-                                 context_holder_->isolate()));
 }
 
 void WebUIRunner::Run(const std::string& source,

mojo/apps/js/mojo_runner_delegate.cc

@@ -17,7 +17,6 @@
 #include "mojo/bindings/js/core.h"
 #include "mojo/bindings/js/handle.h"
 #include "mojo/bindings/js/support.h"
-#include "mojo/bindings/js/unicode.h"
 
 namespace mojo {
 namespace apps {
@@ -54,7 +53,6 @@ MojoRunnerDelegate::MojoRunnerDelegate()
   AddBuiltinModule(gin::TimerModule::kName, gin::TimerModule::GetModule);
   AddBuiltinModule(js::Core::kModuleName, js::Core::GetModule);
   AddBuiltinModule(js::Support::kModuleName, js::Support::GetModule);
-  AddBuiltinModule(js::Unicode::kModuleName, js::Unicode::GetModule);
   AddBuiltinModule(js::gl::kModuleName, js::gl::GetModule);
   AddBuiltinModule(MonotonicClock::kModuleName, MonotonicClock::GetModule);
   AddBuiltinModule(Threading::kModuleName, Threading::GetModule);

mojo/apps/js/test/run_apps_js_tests.cc

@@ -13,7 +13,6 @@
 #include "mojo/apps/js/bindings/monotonic_clock.h"
 #include "mojo/apps/js/bindings/threading.h"
 #include "mojo/bindings/js/core.h"
-#include "mojo/bindings/js/unicode.h"
 #include "mojo/common/test/test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -26,7 +25,6 @@ class TestRunnerDelegate : public gin::FileRunnerDelegate {
   TestRunnerDelegate() {
     AddBuiltinModule(gin::Console::kModuleName, gin::Console::GetModule);
     AddBuiltinModule(Core::kModuleName, Core::GetModule);
-    AddBuiltinModule(Unicode::kModuleName, Unicode::GetModule);
     AddBuiltinModule(gin::TimerModule::kName, gin::TimerModule::GetModule);
     AddBuiltinModule(apps::MonotonicClock::kModuleName,
                      apps::MonotonicClock::GetModule);

mojo/bindings/js/run_js_tests.cc

@@ -11,7 +11,6 @@
 #include "gin/test/file_runner.h"
 #include "gin/test/gtest.h"
 #include "mojo/bindings/js/core.h"
-#include "mojo/bindings/js/unicode.h"
 #include "mojo/common/test/test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -24,7 +23,6 @@ class TestRunnerDelegate : public gin::FileRunnerDelegate {
   TestRunnerDelegate() {
     AddBuiltinModule(gin::Console::kModuleName, gin::Console::GetModule);
     AddBuiltinModule(Core::kModuleName, Core::GetModule);
-    AddBuiltinModule(Unicode::kModuleName, Unicode::GetModule);
   }
 
  private:

mojo/bindings/js/unicode.cc

-// 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 "mojo/bindings/js/unicode.h"
-
-#include "gin/arguments.h"
-#include "gin/array_buffer.h"
-#include "gin/object_template_builder.h"
-#include "gin/per_isolate_data.h"
-#include "gin/public/wrapper_info.h"
-
-namespace mojo {
-namespace js {
-
-namespace {
-
-v8::Handle<v8::Value> DecodeUtf8String(const gin::Arguments& args,
-                                       const gin::ArrayBufferView& buffer) {
-  assert(static_cast<int>(buffer.num_bytes()) >= 0);
-  return v8::String::NewFromUtf8(args.isolate(),
-                                 reinterpret_cast<char*>(buffer.bytes()),
-                                 v8::String::kNormalString,
-                                 static_cast<int>(buffer.num_bytes()));
-}
-
-int EncodeUtf8String(const gin::Arguments& args,
-                     v8::Handle<v8::Value> str_value,
-                     const gin::ArrayBufferView& buffer) {
-  assert(static_cast<int>(buffer.num_bytes()) >= 0);
-  v8::Handle<v8::String> str = str_value->ToString();
-  int num_bytes = str->WriteUtf8(
-      reinterpret_cast<char*>(buffer.bytes()),
-      static_cast<int>(buffer.num_bytes()),
-      NULL,
-      v8::String::NO_NULL_TERMINATION | v8::String::REPLACE_INVALID_UTF8);
-  return num_bytes;
-}
-
-int Utf8Length(v8::Handle<v8::Value> str_value) {
-  return str_value->ToString()->Utf8Length();
-}
-
-gin::WrapperInfo g_wrapper_info = { gin::kEmbedderNativeGin };
-
-}  // namespace
-
-const char Unicode::kModuleName[] = "mojo/public/js/bindings/unicode";
-
-v8::Local<v8::Value> Unicode::GetModule(v8::Isolate* isolate) {
-  gin::PerIsolateData* data = gin::PerIsolateData::From(isolate);
-  v8::Local<v8::ObjectTemplate> templ = data->GetObjectTemplate(
-      &g_wrapper_info);
-
-  if (templ.IsEmpty()) {
-    templ = gin::ObjectTemplateBuilder(isolate)
-                .SetMethod("decodeUtf8String", DecodeUtf8String)
-                .SetMethod("encodeUtf8String", EncodeUtf8String)
-                .SetMethod("utf8Length", Utf8Length)
-                .Build();
-
-    data->SetObjectTemplate(&g_wrapper_info, templ);
-  }
-
-  return templ->NewInstance();
-}
-
-}  // namespace js
-}  // namespace mojo

mojo/bindings/js/unicode.h

-// 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.
-
-#ifndef MOJO_BINDINGS_JS_UNICODE_H_
-#define MOJO_BINDINGS_JS_UNICODE_H_
-
-#include "v8/include/v8.h"
-
-namespace mojo {
-namespace js {
-
-class Unicode {
- public:
-  static const char kModuleName[];
-  static v8::Local<v8::Value> GetModule(v8::Isolate* isolate);
-};
-
-}  // namespace js
-}  // namespace mojo
-
-#endif  // MOJO_BINDINGS_JS_UNICODE_H_

mojo/mojo.gyp

@@ -643,8 +643,6 @@
         'bindings/js/handle.h',
         'bindings/js/support.cc',
         'bindings/js/support.h',
-        'bindings/js/unicode.cc',
-        'bindings/js/unicode.h',
         'bindings/js/waiting_callback.cc',
         'bindings/js/waiting_callback.h',
       ],

mojo/public/js/bindings/constants.cc

@@ -9,6 +9,7 @@ namespace mojo {
 const char kCodecModuleName[] = "mojo/public/js/bindings/codec";
 const char kConnectionModuleName[] = "mojo/public/js/bindings/connection";
 const char kConnectorModuleName[] = "mojo/public/js/bindings/connector";
+const char kUnicodeModuleName[] = "mojo/public/js/bindings/unicode";
 const char kRouterModuleName[] = "mojo/public/js/bindings/router";
 
 }  // namespace mojo

mojo/public/js/bindings/constants.h

@@ -11,6 +11,7 @@ namespace mojo {
 extern const char kCodecModuleName[];
 extern const char kConnectionModuleName[];
 extern const char kConnectorModuleName[];
+extern const char kUnicodeModuleName[];
 extern const char kRouterModuleName[];
 
 }  // namespace mojo

mojo/public/js/bindings/unicode.js

@@ -2,32 +2,50 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Module "mojo/public/js/bindings/unicode"
-//
-// Note: This file is for documentation purposes only. The code here is not
-// actually executed. The real module is implemented natively in Mojo.
-
-while (1);
-
 /**
- * Decodes the UTF8 string from the given buffer.
- * @param {ArrayBufferView} buffer The buffer containing UTF8 string data.
- * @return {string} The corresponding JavaScript string.
+ * Defines functions for translating between JavaScript strings and UTF8 strings
+ * stored in ArrayBuffers. There is much room for optimization in this code if
+ * it proves necessary.
  */
-function decodeUtf8String(buffer) { [native code] }
+define("mojo/public/js/bindings/unicode", function() {
+  /**
+   * Decodes the UTF8 string from the given buffer.
+   * @param {ArrayBufferView} buffer The buffer containing UTF8 string data.
+   * @return {string} The corresponding JavaScript string.
+   */
+  function decodeUtf8String(buffer) {
+    return decodeURIComponent(escape(String.fromCharCode.apply(null, buffer)));
+  }
 
-/**
- * Encodes the given JavaScript string into UTF8.
- * @param {string} str The string to encode.
- * @param {ArrayBufferView} outputBuffer The buffer to contain the result.
- * Should be pre-allocated to hold enough space. Use |utf8Length| to determine
- * how much space is required.
- * @return {number} The number of bytes written to |outputBuffer|.
- */
-function encodeUtf8String(str, outputBuffer) { [native code] }
+  /**
+   * Encodes the given JavaScript string into UTF8.
+   * @param {string} str The string to encode.
+   * @param {ArrayBufferView} outputBuffer The buffer to contain the result.
+   * Should be pre-allocated to hold enough space. Use |utf8Length| to determine
+   * how much space is required.
+   * @return {number} The number of bytes written to |outputBuffer|.
+   */
+  function encodeUtf8String(str, outputBuffer) {
+    var utf8String = unescape(encodeURIComponent(str));
+    if (outputBuffer.length < utf8String.length)
+      throw new Error("Buffer too small for encodeUtf8String");
+    for (var i = 0; i < outputBuffer.length && i < utf8String.length; i++)
+      outputBuffer[i] = utf8String.charCodeAt(i);
+    return i;
+  }
 
-/**
- * Returns the number of bytes that a UTF8 encoding of the JavaScript string
- * |str| would occupy.
- */
-function utf8Length(str) { [native code] }
+  /**
+   * Returns the number of bytes that a UTF8 encoding of the JavaScript string
+   * |str| would occupy.
+   */
+  function utf8Length(str) {
+    var utf8String = unescape(encodeURIComponent(str));
+    return utf8String.length;
+  }
+
+  var exports = {};
+  exports.decodeUtf8String = decodeUtf8String;
+  exports.encodeUtf8String = encodeUtf8String;
+  exports.utf8Length = utf8Length;
+  return exports;
+});