org.springframework.expression.spel.standard.SpelExpressionParser.java Source code

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Here is the source code for org.springframework.expression.spel.standard.SpelExpressionParser.java

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/*
 * Copyright 2002-2014 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
 *
 *      https://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.expression.spel.standard;

import org.springframework.expression.ParseException;
import org.springframework.expression.ParserContext;
import org.springframework.expression.common.TemplateAwareExpressionParser;
import org.springframework.expression.spel.SpelParserConfiguration;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * SpEL parser. Instances are reusable and thread-safe.
 *
 * @author Andy Clement
 * @author Juergen Hoeller
 * @since 3.0
 */
public class SpelExpressionParser extends TemplateAwareExpressionParser {

    private final SpelParserConfiguration configuration;

    /**
     * Create a parser with default settings.
     */
    public SpelExpressionParser() {
        this.configuration = new SpelParserConfiguration();
    }

    /**
     * Create a parser with the specified configuration.
     * @param configuration custom configuration options
     */
    public SpelExpressionParser(SpelParserConfiguration configuration) {
        Assert.notNull(configuration, "SpelParserConfiguration must not be null");
        this.configuration = configuration;
    }

    public SpelExpression parseRaw(String expressionString) throws ParseException {
        return doParseExpression(expressionString, null);
    }

    @Override
    protected SpelExpression doParseExpression(String expressionString, @Nullable ParserContext context)
            throws ParseException {
        return new InternalSpelExpressionParser(this.configuration).doParseExpression(expressionString, context);
    }

}