ConditionExpression ParseFactorExpression()
{
ConditionExpression e;
Token token = tokenizer.Token;
tokenizer.GetNextToken();
if (token.Type == TokenType.LeftParen)
{
e = ParseExpression();
tokenizer.Expect(TokenType.RightParen);
}
else if (token.Type == TokenType.String && tokenizer.Token.Type == TokenType.LeftParen)
{
e = ParseFunctionExpression(token.Value);
}
else if (token.Type == TokenType.String)
{
e = new ConditionFactorExpression(token);
}
else if (token.Type == TokenType.Number)
{
e = new ConditionFactorExpression(token);
}
else if (token.Type == TokenType.Item || token.Type == TokenType.Property ||
token.Type == TokenType.Metadata)
{
e = ParseReferenceExpression(token.Value [0]);
}
else if (token.Type == TokenType.Not)
{
e = ParseNotExpression();
}
else
{
throw new ExpressionParseException(String.Format("Unexpected token {0}, while parsing condition \"{1}\"", token, conditionStr));
}
return(e);
}
ConditionExpression ParseFactorExpression ()
{
ConditionExpression e;
Token token = tokenizer.Token;
tokenizer.GetNextToken ();
if (token.Type == TokenType.LeftParen) {
e = ParseExpression ();
tokenizer.Expect (TokenType.RightParen);
} else if (token.Type == TokenType.String && tokenizer.Token.Type == TokenType.LeftParen) {
e = ParseFunctionExpression (token.Value);
} else if (token.Type == TokenType.String) {
e = new ConditionFactorExpression (token);
} else if (token.Type == TokenType.Number) {
e = new ConditionFactorExpression (token);
} else if (token.Type == TokenType.Item || token.Type == TokenType.Property
|| token.Type == TokenType.Metadata) {
e = ParseReferenceExpression (token.Value [0]);
} else if (token.Type == TokenType.Not) {
e = ParseNotExpression ();
} else
throw new ExpressionParseException (String.Format ("Unexpected token {0}, while parsing condition \"{1}\"", token, conditionStr));
return e;
}