001    /*
002     * Copyright (C) 2012 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    
020    package org.crsh.cli.impl.invocation;
021    
022    import org.crsh.cli.SyntaxException;
023    import org.crsh.cli.impl.LiteralValue;
024    import org.crsh.cli.descriptor.ParameterDescriptor;
025    
026    import java.util.ArrayList;
027    import java.util.List;
028    
029    public class ParameterMatch<P extends ParameterDescriptor> {
030    
031      /** . */
032      private final P parameter;
033    
034      /** . */
035      private final List<LiteralValue> values;
036    
037      /** . */
038      private List<String> strings;
039    
040      public ParameterMatch(P parameter, List<LiteralValue> values) {
041        this.parameter = parameter;
042        this.values = values;
043        this.strings = null;
044      }
045    
046      public P getParameter() {
047        return parameter;
048      }
049    
050      public List<LiteralValue> getValues() {
051        return values;
052      }
053    
054      public List<String> getStrings() {
055        if (strings == null) {
056          List<String> strings = new ArrayList<String>(values.size());
057          for (LiteralValue value : values) {
058            strings.add(parameter.isUnquote() ? value.getValue() : value.getRawValue());
059          }
060          this.strings = strings;
061        }
062        return strings;
063      }
064    
065      /**
066       * Compute the value from the parameter metadata and the values list.
067       *
068       * @return the invocation value
069       * @throws org.crsh.cli.SyntaxException anything that would prevent the value from being computed
070       */
071      public Object computeValue() throws SyntaxException {
072        List<String> strings = getStrings();
073        return parameter.parse(strings);
074      }
075    }