/*
* Copyright 2004-2008 the original author or authors.
*
* 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 org.springframework.binding.expression;
/**
* Parses expression strings into compiled expressions that can be evaluated. Supports parsing templates as well as
* standard expression strings.
*
* @author Keith Donald
*/
public interface ExpressionParser {
/**
* Parse the expression string and return a compiled Expression object you can use for evaluation. Some examples:
*
* <pre>
* 3 + 4
* name.firstName
* </pre>
*
* @param expressionString the raw expression string to parse
* @param context a context for influencing this expression parsing routine (optional)
* @return an evaluator for the parsed expression
* @throws ParserException an exception occurred during parsing
*/
public Expression parseExpression(String expressionString, ParserContext context) throws ParserException;
}