public void ParseToken(DslToken token)
{
if (_expressionDepth > 0)
{
switch (token.TokenType)
{
case "openParenthesis":
_expressionDepth++;
break;
case "closeParenthesis":
_expressionDepth--;
if (_expressionDepth == 0)
{
_fiqlElements.Add(_currentChildExpression);
_currentChildExpression = null;
}
break;
case "sequenceTerminator":
throw new FIQLException("FIQL Clause is not correct. There are too much open parenthesis.");
default:
_currentChildExpression.ParseToken(token);
break;
}
}
else
{
switch (token.TokenType)
{
case "openParenthesis":
_expressionDepth++;
_currentChildExpression = new FIQLExpression();
break;
case "closeParenthesis":
throw new FIQLException("FIQL Clause is not correct. We encountered a problem with a close parenthesis.");
case "constraint":
// TODO : modify with the column name
var fiqlConstraint = new FIQLConstraint();
fiqlConstraint.ParseToken(token);
_fiqlElements.Add(fiqlConstraint);
break;
case "operator":
var fiqlOperator = new FIQLOperator();
fiqlOperator.ParseToken(token);
_fiqlElements.Add(fiqlOperator);
break;
case "sequenceTerminator":
return;
}
}
}
public FIQLExpression Parse(string fiqlQuery)
{
var expressionTokenDefinitions = new ExpressionTokenDefinitions();
var tokenizer = new Tokenizer(expressionTokenDefinitions.TokenDefinitions);
var tokens = tokenizer.Tokenize(fiqlQuery);
FIQLExpression rootExpression = new FIQLExpression();
foreach (var token in tokens)
{
rootExpression.ParseToken(token);
}
return(rootExpression);
}
