コード例 #1
0
  @Override
  public Token parse() {
    Token next = first.getNext();

    if (!next.isOperator(Operator.BRACKET_LEFT))
      throw new RuntimeException("Expected '(' after WHILE, found: " + next);

    next = next.getNext();
    testExp = new BooleanExpression(next, scope);
    next = testExp.parse();

    if (!next.isOperator(Operator.BRACKET_RIGHT))
      throw new RuntimeException("Expected ')' after WHILE condition, found: " + next);

    next = next.getNext();
    if (!next.isNewline()) throw new RuntimeException("Expected newline, found: " + next);

    next = next.getNext();

    Keyword[] target = {Keyword.END};
    statements = new StatementGroup(next, target, scope);
    next = statements.parse();

    return next.getNext();
  }
コード例 #2
0
ファイル: Function.java プロジェクト: DrLabman/GluonCompiler
  @Override
  public Token parse() {
    funcName = first.getNext();
    if (!funcName.isIdentifier())
      throw new RuntimeException("Expected identifier for function name, found: " + funcName);

    GluonFunction.registerFunction(funcName.getValue());

    Token test = funcName.getNext();
    if (!test.isOperator(Operator.BRACKET_LEFT))
      throw new RuntimeException("Expected '(' for function parmater list, found: " + test);

    test = test.getNext();
    while (test.isIdentifier()) {
      Variable param = new Variable(test, scope, true);
      parameters.add(param);
      test = param.parse(true);
      if (test.isOperator(Operator.COMMA)) test = test.getNext();
    }

    if (!test.isOperator(Operator.BRACKET_RIGHT))
      throw new RuntimeException("Expected ')' for function parmater list, found: " + test);

    test = test.getNext();
    if (!test.isOperator(Operator.COLON) && !test.isOperator(Operator.BRACE_LEFT))
      throw new RuntimeException("Expected ':' or '{' in function def, found: " + test);

    if (test.isOperator(Operator.COLON)) {
      test = funcName.getNext();
      if (!test.isOperator(Operator.BRACKET_LEFT))
        throw new RuntimeException("Expected '(' for function return list, found: " + test);

      test = test.getNext();
      while (test.isIdentifier()) {
        returns.add(test);
        test = test.getNext();
        if (test.isOperator(Operator.COMMA)) test = test.getNext();
      }

      if (!test.isOperator(Operator.BRACKET_RIGHT))
        throw new RuntimeException("Expected ')' for function return list, found: " + test);
    }

    if (!test.isOperator(Operator.BRACE_LEFT))
      throw new RuntimeException("Expected opening brace for function logic, found: " + test);

    test = test.getNext();
    if (!test.isNewline())
      throw new RuntimeException("Expected newline before function logic, found: " + test);

    test = test.getNext();
    Operator[] targets = {Operator.BRACE_RIGHT};
    logic = new StatementGroup(test, targets, scope);
    test = logic.parse();

    if (!test.isOperator(Operator.BRACE_RIGHT))
      throw new RuntimeException("Expected closing brace for function logic, found: " + test);

    return test.getNext();
  }