/* * Copyright (C) 2008 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.google.gson; import java.util.Arrays; import java.util.Collections; import java.util.HashSet; import java.util.Set; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * This class can be used to check the validity of a JSON field name. * *
The primary use of this object is to ensure that any Java fields that use the * {@link com.google.gson.annotations.SerializedName} annotation is providing valid JSON * field names. This will make the code fail-fast rather than letting the invalid * field name propagate to the client and it fails to parse.
* * @author Joel Leitch */ class JsonFieldNameValidator { private static final String[] JS_KEYWORDS = { "break", "case", "catch", "class", "comment", "const", "continue", "debugger", "default", "delete", "do", "else", "enum", "export", "extends", "finally", "for", "function", "if", "import", "in", "label", "new", "return", "super", "switch", "this", "throw", "try", "typeof", "var", "void", "while", "with" }; private static final Pattern JSON_FIELD_NAME_PATTERN = Pattern.compile("(^[a-zA-Z][a-zA-Z0-9\\$_]*$)|(^[\\$_][a-zA-Z][a-zA-Z0-9\\$_]*$)"); private static final Set