private IOperation parseVar()
{
Operations.OperationVariableAccess va = new Operations.OperationVariableAccess();
var cc = _reader.Peek();
bool blockMode = (cc == '{');
StringBuilder sb = new StringBuilder();
if (!blockMode)
{
while ((cc = _reader.Peek()) != -1)
{
var ch = (char)cc;
if (!char.IsLetterOrDigit(ch) && _parser._tokenSpecialCharacters.IndexOf(ch) == -1)
{
break;
}
sb.Append(ch);
_reader.Read();
}
va.AddName(sb.ToString());
return(new Operations.OperationExpression(new IOperation[] { va }));
}
_reader.Read(); // Read {
var v = _parser.ParseMulti(_reader);
_reader.SkipWhiteSpaceAndComments();
_reader.ReadAndThrowIfNot('}'); // eat }
return(v);
}
/// Evaluate string and return the result of the evaluation, casted to the type T
public T Eval <T>(string st)
{
using (var sr = new ParsingReader(new StringReader(st)))
{
var o = Eval <T>(sr);
sr.SkipWhiteSpaceAndComments();
sr.ReadAndThrowIfNot(-1);
return(o);
}
}