public override Verb CreateVerb(string[] tokens)
{
Color(position, length, IDEColor.EntityType.Structures);
if (GetExpression(source, NextPosition, CloseParenthesis()).If(out var block, out var index))
{
overridePosition = index;
return(new Push(block));
}
var shortLambdaParser = new ShortLambdaParser("");
if (shortLambdaParser.Scan(source, NextPosition))
{
overridePosition = shortLambdaParser.Position;
return(shortLambdaParser.Verb);
}
return(null);
}
public static IMaybe <(Block, int)> GetExpression(string source, int index, Stop stop)
{
var parser = new ShortLambdaParser("", stop);
return(maybe(parser.Scan(source, index), () => (parser.Lambda.Block, parser.Position)));
}