
/*
 * Janino - An embedded Java[TM] compiler
 *
 * Copyright (c) 2001-2010, Arno Unkrig
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
 * following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
 *       following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
 *       following disclaimer in the documentation and/or other materials provided with the distribution.
 *    3. The name of the author may not be used to endorse or promote products derived from this software without
 *       specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package org.codehaus.janino;

import org.codehaus.commons.compiler.Location;
import org.codehaus.janino.util.StringPattern;

/**
 * Invokes a delegate iff the handle of the warning matches one or more of a set of {@link StringPattern}s.
 */
public
class FilterWarningHandler implements WarningHandler {
    private final StringPattern[] handlePatterns;
    private final WarningHandler  delegate;

    /**
     * Popular values for the <code>handlePatterns</code> parameter are
     * {@link StringPattern#PATTERNS_ALL} and {@link StringPattern#PATTERNS_NONE}.
     */
    public
    FilterWarningHandler(StringPattern[] handlePatterns, WarningHandler delegate) {
        this.handlePatterns = handlePatterns;
        this.delegate       = delegate;
    }

    @Override public void
    handleWarning(String handle, String message, Location optionalLocation) {
        if (StringPattern.matches(this.handlePatterns, handle)) {
            this.delegate.handleWarning(handle, message, optionalLocation);
        }
    }
}
