/*******************************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.olingo.odata2.core.uri.expression;
/* 1 */
/**
* The token kind is used to categorize a single {@link Token}.
* The Expression parser ({@link FilterParserImpl}) uses this information
* to build the expression tree.
*/
public enum TokenKind {
/**
* Indicates that the token is a whitespace character
*/
WHITESPACE,
/**
* Indicates that the token is a '(' character
*/
OPENPAREN,
/**
* Indicates that the token is a ')' character
*/
CLOSEPAREN,
/**
* Indicates that the token is a ',' character
*/
COMMA,
/**
* Indicates that the token is a typed literal. That may be a
* Edm.String like 'TEST'
* Edm.Double like '1.1D'
* or any other Edm.Simple Type
*/
SIMPLE_TYPE,
/**
* Indicates that the token is a single symbol. That may be a
* '-', '=', '/', '?', '.' or a '*' character
*/
SYMBOL,
/**
* Indicates that the token is a set of alphanumeric characters starting
* with a letter
*/
LITERAL, TYPED_LITERAL_TODO_CHECK, UNKNOWN
}