/*******************************************************************************
* Copyright 2013 SAP AG
*
* 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.sap.core.odata.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
}