content: /*
   * Copyright 2019 Aurélien Gâteau <mail@agateau.com>
   *
   * This file is part of Pixel Wheels.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not
   * use this file except in compliance with the License.
   *
   * You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations
   * under the License.
   */
  package com.agateau.ui.animscript;
  
  import com.agateau.ui.DimensionParser;
  import com.badlogic.gdx.utils.Array;
  import java.io.IOException;
  import java.io.StreamTokenizer;
  
  public class RepeatInstructionDefinition implements InstructionDefinition {
      private final AnimScriptLoader mLoader;
  
      RepeatInstructionDefinition(AnimScriptLoader loader) {
          mLoader = loader;
      }
  
      @Override
      public Instruction parse(StreamTokenizer tokenizer, DimensionParser dimParser)
              throws AnimScriptLoader.SyntaxException {
          int count = parseCount(tokenizer);
          Array<Instruction> lst = mLoader.tokenize(tokenizer, "end", dimParser);
          return new RepeatInstruction(lst, count);
      }
  
      private int parseCount(StreamTokenizer tokenizer) throws AnimScriptLoader.SyntaxException {
          try {
              tokenizer.nextToken();
          } catch (IOException e) {
              throw new AnimScriptLoader.SyntaxException(tokenizer, "Missing count argument");
          }
          if (tokenizer.ttype == StreamTokenizer.TT_EOL) {
              return 0;
          }
          if (tokenizer.ttype == StreamTokenizer.TT_NUMBER) {
              return (int) tokenizer.nval;
          }
          throw new AnimScriptLoader.SyntaxException(
                  tokenizer,
                  "Error in repeat instruction: '"
                          + tokenizer.sval
                          + "' is not a valid repeat count");
      }
  }
  