private static ExpressionBase ParseComparison(PositionalTokenizer tokenizer, ExpressionBase left, ComparisonOperation operation, int joinerLine, int joinerColumn)
{
var right = ParseExpression(tokenizer, OperationPriority.Compare);
switch (right.Type)
{
case ExpressionType.ParseError:
return(right);
case ExpressionType.BooleanConstant:
case ExpressionType.Conditional: // will be rebalanced
case ExpressionType.FloatConstant:
case ExpressionType.FunctionCall:
case ExpressionType.IntegerConstant:
case ExpressionType.Mathematic:
case ExpressionType.StringConstant:
case ExpressionType.Variable:
break;
default:
var expressionTokenizer = tokenizer as ExpressionTokenizer;
if (expressionTokenizer != null)
{
expressionTokenizer.QueueExpression(right);
}
right = new KeywordExpression(ComparisonExpression.GetOperatorString(operation), joinerLine, joinerColumn);
return(ParseError(tokenizer, "Incompatible comparison", right));
}
return(new ComparisonExpression(left, operation, right));
}
private static ExpressionBase ParseComparison(PositionalTokenizer tokenizer, ExpressionBase left, ComparisonOperation operation, int joinerLine, int joinerColumn)
{
var right = ExpressionBase.Parse(tokenizer);
switch (right.Type)
{
case ExpressionType.ParseError:
return(right);
case ExpressionType.Conditional: // will be rebalanced
case ExpressionType.FunctionCall:
case ExpressionType.IntegerConstant:
case ExpressionType.Mathematic:
case ExpressionType.StringConstant:
case ExpressionType.Variable:
break;
default:
ParseError(tokenizer, "incompatible comparison", new KeywordExpression(ComparisonExpression.GetOperatorString(operation), joinerLine, joinerColumn));
break;
}
return(new ComparisonExpression(left, operation, right));
}
