public bool Evaluate(Dictionary <string, string> paramVals)
{
if (LogicStatement == "")
{
return(false);
}
LogicParser lp = new LogicParser(LogicStatement, paramVals);
if (lp.Parse())
{
//logic passed
_pass = true;
_result = Success;
return(true);
}
else
{
if (_hasFailResult)
{
// logic failed but statement passed
_pass = true;
_result = Fail;
return(true);
}
else
{
//logic failed and statement failed (had no fail result)
_pass = false;
_result = "";
return(false);
}
}
}
public bool Parse(ref int endIndex)
{
PrepLogic();
// param1='3123'¶m2='eerewer'&(Q3[2]==''||Q11!='123')
if (Logic == "")
{
throw new ArgumentException("Cannot parse logic - no logic provided.");
}
// get rid of white space
string logic = Logic;
int eindex = 0;
LogicParser lp;
bool r;
if (logic.StartsWith("("))
{
//need to calculate nested logic or find end bracket
char c = logic[1];
int index = 1;
while (c != ')')
{
if (c == '(')
{
//nested logic
lp = new LogicParser(logic.Substring(index), Params, true);
r = lp.Parse(ref eindex);
string result = (Convert.ToInt32(r)).ToString();
eindex = index + eindex;
string nlogic = logic.Substring(0, index) + result + ((logic.Length > eindex + 1) ? logic.Substring(eindex + 1) : "");
logic = nlogic;
index = index + (result.Length - 1);
}
index++;
c = logic[index];
if (index >= logic.Length)
{
throw new ArgumentException("Could not find closing bracket.");
}
}
eindex = index;
lp = new LogicParser(logic.Substring(1, (eindex - 1)), Params);
r = lp.Parse();
endIndex = Logic.Length - (logic.Length - eindex);
if (logic.Length > (endIndex + 1) && !_ignoreTrailingText)
{
//has trailing text
string result = (Convert.ToInt32(r)).ToString();
string nlogic = result + logic.Substring(eindex + 1);
logic = nlogic;
lp = new LogicParser(logic, Params);
return(lp.Parse());
}
else
{
return(r);
}
}
else
{
int index = logic.IndexOf("(");
while (index > 0)
{
lp = new LogicParser(logic.Substring(index), Params, true);
r = lp.Parse(ref eindex);
string result = (Convert.ToInt32(r)).ToString();
eindex = eindex + index;
string nlogic = logic.Substring(0, index) + result + ((logic.Length > eindex + 1) ? logic.Substring(eindex + 1) : "");
logic = nlogic;
index = logic.IndexOf("(");
}
//evaluate logic
//this should be bracket free!
//e.g. param1=='1234'||param2!=param3||param5<=9&¶m6>5
Regex regex = new Regex(REGEX_PREDICATE);
MatchEvaluator me = new MatchEvaluator(ReplacePredicate);
logic = regex.Replace(logic, me);
//e.g. now should be 1||0||1&&1
regex = new Regex(REGEX_ANDCLAUSE);
me = new MatchEvaluator(ReplaceAndClause);
while (logic.IndexOf('&') > 0)
{
logic = regex.Replace(logic, me);
}
if (logic.IndexOf("||") > 0)
{
logic = logic.Replace("||", "|");
string[] orArr = logic.Split('|');
foreach (string s in orArr)
{
if (s == "1")
{
return(true);
}
}
return(false);
}
else
{
return(logic == "1");
}
}
}
