001////////////////////////////////////////////////////////////////////////////////
002// checkstyle: Checks Java source code for adherence to a set of rules.
003// Copyright (C) 2001-2018 the original author or authors.
004//
005// This library is free software; you can redistribute it and/or
006// modify it under the terms of the GNU Lesser General Public
007// License as published by the Free Software Foundation; either
008// version 2.1 of the License, or (at your option) any later version.
009//
010// This library is distributed in the hope that it will be useful,
011// but WITHOUT ANY WARRANTY; without even the implied warranty of
012// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013// Lesser General Public License for more details.
014//
015// You should have received a copy of the GNU Lesser General Public
016// License along with this library; if not, write to the Free Software
017// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
018////////////////////////////////////////////////////////////////////////////////
019
020package com.puppycrawl.tools.checkstyle.api;
021
022import java.util.Collections;
023import java.util.HashSet;
024import java.util.Set;
025
026/**
027 * A before execution file filter set applies filters to events.
028 * If a before execution file filter in the set rejects an event, then the
029 * event is rejected. Otherwise, the event is accepted.
030 * @author Richard Veach
031 */
032public final class BeforeExecutionFileFilterSet
033    implements BeforeExecutionFileFilter {
034
035    /** Filter set. */
036    private final Set<BeforeExecutionFileFilter> beforeExecutionFileFilters = new HashSet<>();
037
038    /**
039     * Adds a Filter to the set.
040     * @param filter the Filter to add.
041     */
042    public void addBeforeExecutionFileFilter(BeforeExecutionFileFilter filter) {
043        beforeExecutionFileFilters.add(filter);
044    }
045
046    /**
047     * Removes filter.
048     * @param filter filter to remove.
049     */
050    public void removeBeforeExecutionFileFilter(BeforeExecutionFileFilter filter) {
051        beforeExecutionFileFilters.remove(filter);
052    }
053
054    /**
055     * Returns the Filters of the filter set.
056     * @return the Filters of the filter set.
057     */
058    public Set<BeforeExecutionFileFilter> getBeforeExecutionFileFilters() {
059        return Collections.unmodifiableSet(beforeExecutionFileFilters);
060    }
061
062    @Override
063    public String toString() {
064        return beforeExecutionFileFilters.toString();
065    }
066
067    @Override
068    public boolean accept(String uri) {
069        boolean result = true;
070        for (BeforeExecutionFileFilter filter : beforeExecutionFileFilters) {
071            if (!filter.accept(uri)) {
072                result = false;
073                break;
074            }
075        }
076        return result;
077    }
078
079    /** Clears the BeforeExecutionFileFilterSet. */
080    public void clear() {
081        beforeExecutionFileFilters.clear();
082    }
083
084}