Add URL generator / json parser for getting start_page_token of changes.

google_apis/drive/drive_api_parser.cc

 // Copyright (c) 2012 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 "google_apis/drive/drive_api_parser.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 193 matching lines @@
 const char kFileId[] = "fileId";
 const char kDeleted[] = "deleted";
 const char kFile[] = "file";
 const char kTeamDrive[] = "teamDrive";
 const char kTeamDriveId[] = "teamDriveId";
 
 // Changes List
 // https://developers.google.com/drive/v2/reference/changes/list
 const char kChangeListKind[] = "drive#changeList";
 
+// Changes StartPageToken
+// https://developers.google.com/drive/v2/reference/changes/getStartPageToken
+const char kStartPageTokenKind[] = "drive#startPageToken";
+const char kStartPageToken[] = "startPageToken";
+
 // Maps category name to enum ChangeType.
 struct ChangeTypeMap {
   ChangeResource::ChangeType type;
   const char* type_name;
 };
 
 constexpr ChangeTypeMap kChangeTypeMap[] = {
   { ChangeResource::FILE, "file" },
   { ChangeResource::TEAM_DRIVE, "teamDrive" },
 };
@@ skipping 552 matching lines @@
     if (type_name == kChangeTypeMap[i].type_name) {
       *result = kChangeTypeMap[i].type;
       return true;
     }
   }
   DVLOG(1) << "Unknown change type" << type_name;
   return false;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// StartPageToken implementation
+
+StartPageToken::StartPageToken() {}
+
+StartPageToken::~StartPageToken() {}
+
+// static
+void StartPageToken::RegisterJSONConverter(
+    base::JSONValueConverter<StartPageToken>* converter) {
+  converter->RegisterStringField(kStartPageToken,
+                                 &StartPageToken::start_page_token_);
+}
+
+// static
+bool StartPageToken::HasStartPageTokenKind(const base::Value& value) {
+  return IsResourceKindExpected(value, kStartPageTokenKind);
+}
+
+// static
+std::unique_ptr<StartPageToken> StartPageToken::CreateFrom(
+    const base::Value& value) {
+  std::unique_ptr<StartPageToken> resource(new StartPageToken());
+  if (!HasStartPageTokenKind(value) || !resource->Parse(value)) {
+    LOG(ERROR) << "Unable to create: Invalid StartPageToken JSON!";
+    return std::unique_ptr<StartPageToken>();
+  }
+  return resource;
+}
+
+bool StartPageToken::Parse(const base::Value& value) {
+  base::JSONValueConverter<StartPageToken> converter;
+  if (!converter.Convert(value, this)) {
+    LOG(ERROR) << "Unable to parse: Invalid StartPageToken";
+    return false;
+  }
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
 // ChangeList implementation
 
 ChangeList::ChangeList() : largest_change_id_(0) {}
 
 ChangeList::~ChangeList() {}
 
 // static
 void ChangeList::RegisterJSONConverter(
     base::JSONValueConverter<ChangeList>* converter) {
   converter->RegisterCustomField<GURL>(kNextLink,
@@ skipping 100 matching lines @@
 bool ImageMediaMetadata::Parse(const base::Value& value) {
   base::JSONValueConverter<ImageMediaMetadata> converter;
   if (!converter.Convert(value, this)) {
     LOG(ERROR) << "Unable to parse: Invalid ImageMediaMetadata.";
     return false;
   }
   return true;
 }
 
 }  // namespace google_apis