public static object EvaluateBinding(JObject data, string bindingExpression)
{
// If it's all one single expression
// (This is a temporary hack for resolving correct data types)
if (Regex.IsMatch(bindingExpression, "^" + REGEX_BINDING_EXPRESSION + "$"))
{
return(EvaluateSingleBinding(data, bindingExpression));
}
Regex regex = new Regex(REGEX_BINDING_EXPRESSION);
var evaluator = new MyMatchEvaluator(data);
string replaced = regex.Replace(bindingExpression, evaluator.ReplaceBinding);
return(replaced);
}
public static JToken EvaluateBinding(string bindingExpression, JsonTransformerContext context)
{
string remainingBindingExpression = bindingExpression;
string answer = "";
bool first = true;
bool found = false;
while (true)
{
int startIndex = remainingBindingExpression.IndexOf('{');
if (startIndex != -1)
{
string substr = remainingBindingExpression.Substring(startIndex);
var inputStream = new AntlrInputStream(substr);
var lexer = new BindingExpressionsLexer(inputStream);
var tokenStream = new CommonTokenStream(lexer);
var parser = new BindingExpressionsParser(tokenStream);
parser.AddErrorListener(new ErrorListener());
var foundExpression = parser.bindingExpression();
// If it actually found something
if (foundExpression.Stop.StopIndex < substr.Length && parser.NumberOfSyntaxErrors == 0)
{
var visitor = new BindingExpressionsVisitor(context);
JToken result = visitor.Visit(foundExpression);
answer += remainingBindingExpression.Substring(0, startIndex);
answer += result;
remainingBindingExpression = substr;
remainingBindingExpression = remainingBindingExpression.Substring(foundExpression.Stop.StopIndex + 1);
// If whole expression was the binding expression, don't do any string concatenation
if (first && startIndex == 0 && remainingBindingExpression.Length == 0)
{
return(result);
}
found = true;
}
else
{
// Otherwise, increment past there and try again
answer += remainingBindingExpression.Substring(startIndex + 1);
remainingBindingExpression = remainingBindingExpression.Substring(startIndex + 1);
}
}
else
{
answer += remainingBindingExpression;
break;
}
first = false;
}
if (found)
{
return(answer);
}
return(bindingExpression);
//var inputStream = new AntlrInputStream(bindingExpression);
//var lexer = new BindingExpressionsLexer(inputStream);
//var tokenStream = new CommonTokenStream(lexer);
//var parser = new BindingExpressionsParser(tokenStream);
//var foundExpression = parser.input_string();
//if (foundExpression.IsEmpty)
//{
// //return bindingExpression;
//}
//var visitor = new BindingExpressionsVisitor(context);
//JToken result = visitor.Visit(foundExpression);
//return result;
// If it's all one single expression, we don't do any string concatenation and we return the actual type
var match = Regex.Match(bindingExpression, "^" + REGEX_BINDING_EXPRESSION + "$");
if (match.Success && match.Groups[1].Success)
{
return(EvaluateComplexExpression(match.Groups[1].Value, context));
}
Regex regex = new Regex(REGEX_BINDING_EXPRESSION);
var evaluator = new MyMatchEvaluator(context);
string replaced = regex.Replace(bindingExpression, evaluator.ReplaceBinding);
return(replaced);
}
