Adds IDBKeyPath parser / extractor, and provides a mechanism to call it sandboxed.

webkit/glue/idb_bindings.cc

Index: webkit/glue/idb_bindings.cc
diff --git a/webkit/glue/idb_bindings.cc b/webkit/glue/idb_bindings.cc
new file mode 100644
index 0000000000000000000000000000000000000000..fd2613047a421de32f4c9f7e79656251ae4c5b4c
--- /dev/null
+++ b/webkit/glue/idb_bindings.cc
@@ -0,0 +1,69 @@
+// Copyright (c) 2010 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 "webkit/glue/idb_bindings.h"
+
+#include "base/basictypes.h"
+#include "base/scoped_ptr.h"
+#include "base/string16.h"
+#include "base/utf_string_conversions.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebIDBKey.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebIDBKeyPath.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebSerializedScriptValue.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebString.h"
+#include "v8/include/v8.h"
+
+namespace webkit_glue {
+
+using WebKit::WebIDBKey;
+using WebKit::WebIDBKeyPath;
+using WebKit::WebSerializedScriptValue;
+
+namespace {
+
+class LocalContext {
+ public:
+  LocalContext()
+      : context_(v8::Context::New()) {
+    context_->Enter();
+  }
+
+  virtual ~LocalContext() {
+    context_->Exit();
+    context_.Dispose();
+  }
+
+ private:
+  v8::Locker lock_;
+  v8::HandleScope scope_;
+  v8::Persistent<v8::Context> context_;
+
+  DISALLOW_COPY_AND_ASSIGN(LocalContext);
+};
+
+}  // namespace
+
+bool IDBKeysFromValuesAndKeyPath(
+    const std::vector<WebSerializedScriptValue>& serialized_script_values,
+    const string16& idb_key_path,
+    std::vector<WebIDBKey>* values) {
+  LocalContext env;
+  WebIDBKeyPath web_idb_key_path = WebIDBKeyPath::create(idb_key_path);
+  bool error = web_idb_key_path.parseError() != 0;
+  // TODO(bulach): what to do when we have a parse error? For now, setting
+  // all values back as invalid and returning a boolean.
+  for (std::vector<WebSerializedScriptValue>::const_iterator i =
+           serialized_script_values.begin();
+       i != serialized_script_values.end(); ++i) {
+    if (error) {
+      values->push_back(WebIDBKey::createInvalid());
+    } else {
+      values->push_back(
+          WebIDBKey::createFromValueAndKeyPath(*i, web_idb_key_path));
+    }
+  }
+  return error;
+}
+
+}  // namespace webkit_glue