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Jakarta Expression Language Implementation

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/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2021 Payara Services Ltd.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.el.parser;

import jakarta.el.ELException;

import com.sun.el.lang.EvaluationContext;

/**
 * @author Jacob Hookom [[email protected]]
 * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: kchung $
 */
public final class AstLiteralExpression extends SimpleNode {
    public AstLiteralExpression(int id) {
        super(id);
    }

    @Override
    public Class getType(EvaluationContext ctx) throws ELException {
        return String.class;
    }

    @Override
    public Object getValue(EvaluationContext ctx) throws ELException {
        return this.image;
    }

    @Override
    public void setImage(String image) {
        if (image.indexOf('\\') == -1) {
            this.image = image;
            return;
        }
        int size = image.length();
        StringBuilder buf = new StringBuilder(size);
        for (int i = 0; i < size; i++) {
            char c = image.charAt(i);
            if (c == '\\' && i + 1 < size) {
                char c1 = image.charAt(i + 1);
                if (c1 == '\\' || c1 == '"' || c1 == '\'' || c1 == '#' || c1 == '$') {
                    c = c1;
                    i++;
                }
            }
            buf.append(c);
        }
        this.image = buf.toString();
    }
}