org.unlaxer.tinyexpression.parser.NumberVariableParser Maven / Gradle / Ivy

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package org.unlaxer.tinyexpression.parser;

import java.util.List;

import org.unlaxer.Token;
import org.unlaxer.parser.Parser;
import org.unlaxer.parser.Parsers;
import org.unlaxer.parser.combinator.ChoiceInterface;
import org.unlaxer.parser.combinator.LazyChoice;

public class NumberVariableParser extends LazyChoice {

  private static final long serialVersionUID = -6048451001170410L;

  List parsers;

  public NumberVariableParser() {
    super();
  }

  @Override
  public void initialize() {
    parsers = new Parsers(//
        Parser.get(NumberPrefixedVariableParser.class), //
        Parser.get(NumberSuffixedVariableParser.class)//
    );
  }

  @Override
  public List getLazyParsers() {
    return parsers;
  }
  
  public static String getVariableName(Token thisParserParsed) {
    Token choiced = ChoiceInterface.choiced(thisParserParsed);
    if(choiced.parser instanceof NumberPrefixedVariableParser) {
      return NumberPrefixedVariableParser.getVariableName(thisParserParsed);
    }else if(choiced.parser instanceof NumberSuffixedVariableParser) {
      return NumberSuffixedVariableParser.getVariableName(thisParserParsed);
    }
    throw new IllegalArgumentException();
  }

}