public RantFunctionInfo GetFunctionInfo(RantFunctionGroup group, int argc, Stringe from, Stringe to)
{
var func = group.GetFunction(argc);
if (func == null)
{
SyntaxError(Stringe.Between(from, to), $"No overload of function '{group.Name}' can take {argc} arguments");
}
return(func);
}
private IEnumerable <Parselet> ReplacerArgs(Token <R> fromToken, Regex regex)
{
Token <R> funcToken = null;
var actions = new List <RantAction>();
var sequences = new List <RantAction>();
while (!reader.End)
{
funcToken = reader.ReadToken();
if (funcToken.ID == R.Whitespace)
{
switch (reader.PeekType())
{
case R.RightSquare:
continue;
}
}
else if (funcToken.ID == R.Semicolon)
{
// add action to args and continue
if (sequences.Count == 1)
{
compiler.SyntaxError(funcToken, "Too many arguments in replacer");
}
sequences.Add(actions.Count == 1 ? actions[0] : new RASequence(actions, funcToken));
actions.Clear();
reader.SkipSpace();
continue;
}
else if (funcToken.ID == R.RightSquare)
{
// add action to args and return
sequences.Add(actions.Count == 1 ? actions[0] : new RASequence(actions, funcToken));
if (sequences.Count != 2)
{
compiler.SyntaxError(Stringe.Between(funcToken, fromToken), "Replacer must have two arguments");
}
AddToOutput(new RAReplacer(Stringe.Range(fromToken, funcToken), regex, sequences[0], sequences[1]));
yield break;
}
yield return(GetParselet(funcToken, actions.Add));
}
compiler.SyntaxError(fromToken, "Unterminated function: unexpected end of file");
}