/// <summary>
/// Checks syntax errors on input expression,
/// as well as performing disambiguation for identifiers.
/// </summary>
/// <param name="tokenList">
/// A list of tokenized input.
/// </param>
private void CheckSyntaxError(List <Token> tokenList)
{
// Initialize, assuming preceded by OR
TokenKind previous = TokenKind.Or;
for (int i = 0; i < tokenList.Count; i++)
{
Token token = tokenList[i];
// Not allowed: ... AND/OR AND/OR ...
// Allowed: ... AND/OR NOT/ID ...
if (previous == TokenKind.Or || previous == TokenKind.And)
{
if ((token.Kind == TokenKind.Or) || (token.Kind == TokenKind.And))
{
throw InterpreterError.NewInterpreterException(null, typeof(RuntimeException),
null, "SyntaxErrorUnexpectedBinaryOperator", EnumExpressionEvaluatorStrings.SyntaxErrorUnexpectedBinaryOperator);
}
}
// Not allowed: ... NOT AND/OR/NOT ...
// Allowed: ... NOT ID ...
else if (previous == TokenKind.Not)
{
if (token.Kind != TokenKind.Identifier)
{
throw InterpreterError.NewInterpreterException(null, typeof(RuntimeException),
null, "SyntaxErrorIdentifierExpected", EnumExpressionEvaluatorStrings.SyntaxErrorIdentifierExpected);
}
}
// Not allowed: ... ID NOT/ID ...
// Allowed: ... ID AND/OR ...
else if (previous == TokenKind.Identifier)
{
if ((token.Kind == TokenKind.Identifier) || (token.Kind == TokenKind.Not))
{
throw InterpreterError.NewInterpreterException(null, typeof(RuntimeException),
null, "SyntaxErrorBinaryOperatorExpected", EnumExpressionEvaluatorStrings.SyntaxErrorBinaryOperatorExpected);
}
}
if (token.Kind == TokenKind.Identifier)
{
string text = token.Text;
token.Text = EnumMinimumDisambiguation.EnumDisambiguate(text, typeof(T));
}
previous = token.Kind;
}
}
private void CheckSyntaxError(List <Token> tokenList)
{
TokenKind or = TokenKind.Or;
for (int i = 0; i < tokenList.Count; i++)
{
Token token = tokenList[i];
switch (or)
{
case TokenKind.Or:
case TokenKind.And:
if ((token.Kind == TokenKind.Or) || (token.Kind == TokenKind.And))
{
throw InterpreterError.NewInterpreterException(null, typeof(RuntimeException), null, "SyntaxErrorUnexpectedBinaryOperator", EnumExpressionEvaluatorStrings.SyntaxErrorUnexpectedBinaryOperator, new object[0]);
}
break;
default:
if (or == TokenKind.Not)
{
if (token.Kind != TokenKind.Identifier)
{
throw InterpreterError.NewInterpreterException(null, typeof(RuntimeException), null, "SyntaxErrorIdentifierExpected", EnumExpressionEvaluatorStrings.SyntaxErrorIdentifierExpected, new object[0]);
}
}
else if ((or == TokenKind.Identifier) && ((token.Kind == TokenKind.Identifier) || (token.Kind == TokenKind.Not)))
{
throw InterpreterError.NewInterpreterException(null, typeof(RuntimeException), null, "SyntaxErrorBinaryOperatorExpected", EnumExpressionEvaluatorStrings.SyntaxErrorBinaryOperatorExpected, new object[0]);
}
break;
}
if (token.Kind == TokenKind.Identifier)
{
string text = token.Text;
CompareInfo.GetCompareInfo(CultureInfo.InvariantCulture.LCID);
token.Text = EnumMinimumDisambiguation.EnumDisambiguate(text, typeof(T));
}
or = token.Kind;
}
}