public String parseQuery(String fiqlQuery)
{
var lexer = new Lexer(fiqlQuery);
//lexer.trace += Console.WriteLine;
var tokens = lexer.lex();
List <String> illegalIdentifiers = tokens
.Where(token => token.symbol == Symbol.ident)
.Select(token => token.data)
.Where(identifier => !fields.Contains(identifier))
.Distinct()
.ToList();
if (illegalIdentifiers.Count() > 0)
{
throw new ParseException("These identifiers are not valid fields: " +
String.Join(", ", illegalIdentifiers));
}
var parser = new Parser(tokens);
//parser.trace += Console.WriteLine;
Ast.Disjunction tree = parser.parse();
var sqlGenerator = new SQLGenererator();
return(sqlGenerator.Visit(tree));
}
public String Visit(Ast.Disjunction condition)
{
return("(" +
String.Join(" OR ", condition.Children
.Select(child => child.Accept(this)))
+ ")");
}
private Ast.Disjunction condition()
{
trace("FIQLParser.Parser.condition()");
var conditionNode = new Ast.Disjunction();
conditionNode.AddChild(booleanTerm());
while (accept(Symbol.comma))
{
conditionNode.AddChild(booleanTerm());
}
return(conditionNode);
}