|
public static StringOf ( |
||
| tokens | ||
| return | string | |
private void Expect(TokenType[] types, bool identifierAllowed = true)
{
var next = _scanner.PeekToken();
if (next == null)
{
throw new EvaluatorException(_scanner.Column,
string.Format("Unexpected end of input, instead of token(s): {0}{1}.", identifierAllowed ? "'IDENT', " : "", Token.StringOf(types)));
}
if ((identifierAllowed && next.Type == TokenType.Identifier) ||
types.Contains(next.Type))
{
Consume();
}
else
{
throw new EvaluatorException(_scanner.Column,
string.Format("Syntax error, expected token(s): {0}{1}; but found '{2}'.", identifierAllowed ? "'IDENT', " : "", Token.StringOf(types), Token.StringOf(next)));
}
}
private void Expect(TokenType type)
{
var next = _scanner.PeekToken();
if (next == null)
{
throw new EvaluatorException(_scanner.Column,
string.Format("Unexpected end of input, instead of token(s): 'LITERAL', '{0}'.", Token.StringOf(type)));
}
if (next.Type == type)
{
Consume();
}
else
{
throw new EvaluatorException(_scanner.Column,
string.Format("Syntax error, expected token(s) 'LITERAL', '{0}'; but found '{1}'.", Token.StringOf(type), Token.StringOf(next)));
}
}
private void Ensure(TokenType[] types, bool identifierAllowed = true)
{
if (_current == null)
{
throw new EvaluatorException(_scanner.Column,
string.Format("Unexpected end of input, instead of token(s): {0}{1}.", identifierAllowed ? "'IDENT', " : "", Token.StringOf(types)));
}
if (!((identifierAllowed && _current.Type == TokenType.Identifier) ||
types.Contains(_current.Type)))
{
throw new EvaluatorException(_scanner.Column,
string.Format("Syntax error, expected token(s): 'IDENT', {0}; but found '{1}'.", Token.StringOf(types), Token.StringOf(_current)));
}
}
