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
020package org.crsh.cli.impl.invocation;
021
022import org.crsh.cli.descriptor.CommandDescriptor;
023import org.crsh.cli.descriptor.OptionDescriptor;
024import org.crsh.cli.descriptor.ParameterDescriptor;
025import org.crsh.cli.impl.descriptor.CommandDescriptorImpl;
026import org.crsh.cli.SyntaxException;
027
028import java.util.Collection;
029import java.util.Collections;
030import java.util.LinkedHashMap;
031import java.util.LinkedList;
032import java.util.List;
033import java.util.Map;
034
035/** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
036public final class InvocationMatch<T> {
037
038  /** . */
039  private final CommandDescriptorImpl<T> descriptor;
040
041  /** . */
042  private Map<OptionDescriptor, OptionMatch> options;
043
044  /** . */
045  private List<ArgumentMatch> arguments;
046
047  /** . */
048  private String rest;
049
050  /** . */
051  private final InvocationMatch<T> owner;
052
053  public InvocationMatch(CommandDescriptorImpl<T> descriptor) {
054    this(null, descriptor);
055  }
056
057  private InvocationMatch(InvocationMatch<T> owner, CommandDescriptorImpl<T> descriptor) {
058    this.owner = owner;
059    this.descriptor = descriptor;
060    this.options = Collections.emptyMap();
061    this.rest = null;
062    this.arguments = Collections.emptyList();
063  }
064
065  public InvocationMatch<T> owner() {
066    return owner;
067  }
068
069  public InvocationMatch<T> subordinate(String name) {
070    CommandDescriptorImpl<T> subordinate = descriptor.getSubordinate(name);
071    if (subordinate != null) {
072      return new InvocationMatch<T>(this, subordinate);
073    } else {
074      return null;
075    }
076  }
077
078  public CommandDescriptor<T> getDescriptor() {
079    return descriptor;
080  }
081
082  public final <D extends ParameterDescriptor> ParameterMatch<D> getParameter(D parameter) {
083    if (parameter instanceof OptionDescriptor) {
084      return (ParameterMatch<D>)options.get(parameter);
085    } else {
086      for (ArgumentMatch argumentMatch : arguments) {
087        if (argumentMatch.getParameter()  == parameter) {
088          return (ParameterMatch<D>)argumentMatch;
089        }
090      }
091      return null;
092    }
093  }
094
095  public CommandInvoker<T, ?> getInvoker() {
096    return descriptor.getInvoker(this);
097  }
098
099  public Object invoke(T command) throws InvocationException, SyntaxException {
100    return invoke(Resolver.EMPTY, command);
101  }
102
103  public Object invoke(Resolver resolver, T command) throws InvocationException, SyntaxException {
104    CommandInvoker<T, ?> invoker = getInvoker();
105    if (invoker != null) {
106      return invoker.invoke(resolver, command);
107    } else {
108      return null;
109    }
110  }
111
112  public Collection<OptionMatch> options() {
113    return options.values();
114  }
115
116  public void option(OptionMatch option) {
117    if (options.isEmpty()) {
118      options = new LinkedHashMap<OptionDescriptor, OptionMatch>();
119    }
120    options.put(option.getParameter(), option);
121  }
122
123  public Collection<ArgumentMatch> arguments() {
124    return arguments;
125  }
126
127  public void argument(ArgumentMatch argument) {
128    if (arguments.isEmpty()) {
129      arguments = new LinkedList<ArgumentMatch>();
130    }
131    arguments.add(argument);
132  }
133
134  public String getRest() {
135    return rest;
136  }
137
138  public void setRest(String rest) {
139    this.rest = rest;
140  }
141}