public FTSQueryParser(string condition, FTSQueryParserOptions options)
{
this.condition = condition;
this.options = options;
// THERE IS A FLAW IN THE HANDLING OF HYPHENS WHEN IT IS PART OF A WORD
// WE CAN PUT PLACEHOLDER TEXT IN FOR THE HYPHEN - MESSY BUT WORKS
string tempCondition = Regex.Replace(condition, "([A-Za-z0-9])-([A-Za-z0-9])", "${1}hyphenplaceholder${2}");
ConditionParser parser = new ConditionParser(tempCondition, options);
string tempNormalForm = parser.RootExpression.ToString().Replace("hyphenplaceholder", "-");
normalForm = tempNormalForm;
searchTerms = new List <string>();
foreach (ConditionExpression exp in parser.RootExpression)
{
if (exp.IsSubexpression)
{
continue;
}
if (exp.Term.Length == 0)
{
continue;
}
string tempTerm = exp.Term.Replace("hyphenplaceholder", "-");
searchTerms.Add(tempTerm);
}
}
public ConditionParser(String condition, FTSQueryParserOptions options)
{
ConditionStream stream = new ConditionStream(condition, options);
this.options = options;
rootExpression = new ConditionExpression(options);
currentExpression = rootExpression;
Reset();
while (stream.Read())
{
if (ConditionOperator.IsSymbol(stream.Current))
{
PutToken();
SetToken(stream.Current);
PutToken();
continue;
}
switch (stream.Current)
{
case ' ': PutToken(); continue;
case '(': PushExpression(); continue;
case ')': PopExpression(); continue;
case '"':
PutToken();
inQuotes = true;
SetToken(stream.ReadQuote());
PutToken();
inQuotes = false;
continue;
}
AddToken(stream.Current);
}
PutToken();
if (!object.ReferenceEquals(rootExpression, currentExpression))
{
if ((options & FTSQueryParserOptions.ThrowOnUnbalancedParens) != 0)
{
throw new InvalidOperationException("Unbalanced parentheses.");
}
}
}
public ConditionExpression(FTSQueryParserOptions options)
: this()
{
this.options = options;
}
public ConditionStream(string condition, FTSQueryParserOptions options)
{
this.options = options;
this.condition = Regex.Replace((condition ?? String.Empty), @"\x09|\x0D|\x0A|[\x01-\x08]|\x10|[\x0B-\x0C]|[\x0E-\x1F]", " ");
index = -1;
}
){kind=link}