void ThrowParseException(TokenType type, string error_fmt, params object[] args)
{
if (!String.IsNullOrEmpty(error_fmt))
{
throw new ExpressionParseException(string.Format(error_fmt, args));
}
if (tokenizer.Token.Type == TokenType.EOF)
{
throw new ExpressionParseException(String.Format(
"Expected a \"{0}\" but the condition ended abruptly, while parsing condition \"{1}\"",
Token.TypeAsString(type), conditionStr));
}
throw new ExpressionParseException(String.Format(
"Expected \"{0}\" token, but got {1}, while parsing \"{2}\"",
Token.TypeAsString(type), tokenizer.Token, conditionStr));
}
// used to check current token type
void IsAtToken(TokenType type, string error_msg)
{
if (tokenizer.Token.Type != type)
{
if (!String.IsNullOrEmpty(error_msg))
{
throw new ExpressionParseException(error_msg);
}
if (tokenizer.Token.Type == TokenType.EOF)
{
throw new ExpressionParseException(String.Format(
"Expected a \"{0}\" but the condition ended abruptly, while parsing condition \"{1}\"",
Token.TypeAsString(type), conditionStr));
}
throw new ExpressionParseException(String.Format(
"Expected \"{0}\" token, but got {1}, while parsing \"{2}\"",
Token.TypeAsString(type), tokenizer.Token, conditionStr));
}
}