public Expression substr(Expression stringExpr, Expression index, Expression length)
{
Expression.Calling call = new Expression.Calling(stringExpr.Index("substr"), PossibleValueTypes.String);
call.Parameters.Add(index);
call.Parameters.Add(length);
return call;
}
public Expression charCodeAt(Expression stringExpr, Expression i)
{
Expression.Calling call = new Expression.Calling(stringExpr.Index("charCodeAt"), PossibleValueTypes.Int32);
call.Parameters.Add(i);
return call;
}
