Tools/Java/Source/Cpptasks/net/sf/antcontrib/cpptasks/parser/BranchState.java

   1 /*
   2  *
   3  * Copyright 2002-2004 The Ant-Contrib project
   4  *
   5  *  Licensed under the Apache License, Version 2.0 (the "License");
   6  *  you may not use this file except in compliance with the License.
   7  *  You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  *  Unless required by applicable law or agreed to in writing, software
  12  *  distributed under the License is distributed on an "AS IS" BASIS,
  13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  *  See the License for the specific language governing permissions and
  15  *  limitations under the License.
  16  */
  17 package net.sf.antcontrib.cpptasks.parser;
  18 public class BranchState extends AbstractParserState {
  19     private char[] branchChars;
  20     private AbstractParserState[] branchStates;
  21     private AbstractParserState noMatchState;
  22     public BranchState(AbstractParser parser, char[] branchChars,
  23             AbstractParserState[] branchStates, AbstractParserState noMatchState) {
  24         super(parser);
  25         this.branchChars = (char[]) branchChars.clone();
  26         this.branchStates = (AbstractParserState[]) branchStates.clone();
  27         this.noMatchState = noMatchState;
  28     }
  29     public AbstractParserState consume(char ch) {
  30         AbstractParserState state;
  31         for (int i = 0; i < branchChars.length; i++) {
  32             if (ch == branchChars[i]) {
  33                 state = branchStates[i];
  34                 return state.consume(ch);
  35             }
  36         }
  37         state = getNoMatchState();
  38         if (state != null) {
  39             return state.consume(ch);
  40         }
  41         return state;
  42     }
  43     protected AbstractParserState getNoMatchState() {
  44         return noMatchState;
  45     }
  46 }