Use builders to convert between WebKit and content IDB types

content/child/indexed_db/indexed_db_key_builders.cc

+// Copyright (c) 2013 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 "content/child/indexed_db/indexed_db_key_builders.h"
+
+#include "base/logging.h"
+#include "third_party/WebKit/public/platform/WebVector.h"
+
+using WebKit::WebIDBKey;
+using WebKit::WebIDBKeyRange;
+using WebKit::WebIDBKeyTypeArray;
+using WebKit::WebIDBKeyTypeDate;
+using WebKit::WebIDBKeyTypeInvalid;
+using WebKit::WebIDBKeyTypeMin;
+using WebKit::WebIDBKeyTypeNull;
+using WebKit::WebIDBKeyTypeNumber;
+using WebKit::WebIDBKeyTypeString;
+using WebKit::WebVector;
+using WebKit::WebString;
+
+static content::IndexedDBKey::KeyArray CopyKeyArray(const WebIDBKey& other) {
+  content::IndexedDBKey::KeyArray result;
+  if (other.keyType() == WebIDBKeyTypeArray) {
+    const WebVector<WebIDBKey>& array = other.array();
+    for (size_t i = 0; i < array.size(); ++i)
+      result.push_back(content::IndexedDBKeyBuilder::Build(array[i]));
+  }
+  return result;
+}
+
+static std::vector<string16> CopyArray(
+    const WebVector<WebString>& array) {
+  std::vector<string16> copy(array.size());
+  for (size_t i = 0; i < array.size(); ++i)
+    copy[i] = array[i];
+  return copy;
+}
+
+
+namespace content {
+
+IndexedDBKey IndexedDBKeyBuilder::Build(const WebKit::WebIDBKey& key) {
+  switch (key.keyType()) {
+    case WebIDBKeyTypeArray:
+      return IndexedDBKey(CopyKeyArray(key));
+    case WebIDBKeyTypeString:
+      return IndexedDBKey(key.string());
+    case WebIDBKeyTypeDate:
+      return IndexedDBKey(key.date(), WebIDBKeyTypeDate);
+    case WebIDBKeyTypeNumber:
+      return IndexedDBKey(key.number(), WebIDBKeyTypeNumber);
+    case WebIDBKeyTypeNull:
+    case WebIDBKeyTypeInvalid:
+      return IndexedDBKey(key.keyType());
+    case WebIDBKeyTypeMin:
+      NOTREACHED();
+      return IndexedDBKey();
+  }
+  NOTREACHED();
+  return IndexedDBKey();
+}
+
+WebIDBKey WebIDBKeyBuilder::Build(const IndexedDBKey& key) {
+  switch (key.type()) {
+    case WebIDBKeyTypeArray: {
+      const IndexedDBKey::KeyArray& array = key.array();
+      WebKit::WebVector<WebIDBKey> web_array(array.size());
+      for (size_t i = 0; i < array.size(); ++i) {
+        web_array[i] = Build(array[i]);
+      }
+      return WebIDBKey::createArray(web_array);
+    }
+    case WebIDBKeyTypeString:
+      return WebIDBKey::createString(key.string());
+    case WebIDBKeyTypeDate:
+      return WebIDBKey::createDate(key.date());
+    case WebIDBKeyTypeNumber:
+      return WebIDBKey::createNumber(key.number());
+    case WebIDBKeyTypeInvalid:
+      return WebIDBKey::createInvalid();
+    case WebIDBKeyTypeNull:
+      return WebIDBKey::createNull();
+    case WebIDBKeyTypeMin:
+      NOTREACHED();
+      return WebIDBKey::createInvalid();
+  }
+  NOTREACHED();
+  return WebIDBKey::createInvalid();
+}
+
+IndexedDBKeyRange IndexedDBKeyRangeBuilder::Build(
+    const WebIDBKeyRange& key_range) {
+  return IndexedDBKeyRange(
+    IndexedDBKeyBuilder::Build(key_range.lower()),
+    IndexedDBKeyBuilder::Build(key_range.upper()),
+    key_range.lowerOpen(),
+    key_range.upperOpen());
+}
+
+IndexedDBKeyPath IndexedDBKeyPathBuilder::Build(
+    const WebKit::WebIDBKeyPath& key_path) {
+  switch (key_path.keyPathType()) {
+    case WebKit::WebIDBKeyPathTypeString:
+      return IndexedDBKeyPath(key_path.string());
+    case WebKit::WebIDBKeyPathTypeArray:
+      return IndexedDBKeyPath(CopyArray(key_path.array()));
+    case WebKit::WebIDBKeyPathTypeNull:
+      return IndexedDBKeyPath();
+  }
+  NOTREACHED();
+  return IndexedDBKeyPath();
+}
+
+WebKit::WebIDBKeyPath WebIDBKeyPathBuilder::Build(
+    const IndexedDBKeyPath& key_path) {
+  switch (key_path.type()) {
+    case WebKit::WebIDBKeyPathTypeString:
+      return WebKit::WebIDBKeyPath::create(WebString(key_path.string()));
+    case WebKit::WebIDBKeyPathTypeArray:
+      return WebKit::WebIDBKeyPath::create(CopyArray(key_path.array()));
+    case WebKit::WebIDBKeyPathTypeNull:
+      return WebKit::WebIDBKeyPath::createNull();
+  }
+  NOTREACHED();
+  return WebKit::WebIDBKeyPath::createNull();
+}
+
+}  // namespace content