Firth
Firth copied to clipboard
hikari-no-yume
Strings
They're in the spec as the literal, but lack any functions to manipulate them, and they're not actually implemented in the interpreter.
A rather important note: strings should be made up of true Unicode characters (codepoints), not UTF-16 code units. That means a JS string of length four containing a surrogate pair would be a Firth string of length three, ideally.
Another thing: it should have Unicode escape sequences with the \u{xxxx...} syntax I proposed for PHP: http://wiki.php.net/rfc/unicode_escape
Some sort of string interpolation would be great. I'm tempted to just have printf and be done with it. Perhaps sprintf renamed to format.
OK, the basics of this are done now: https://github.com/TazeTSchnitzel/Firth/commit/0a249c27593a446ea268854c00ff0e5434a2d681
All that's needed are Unicode escapes and some manipulation functions. Also, it should probably error if given invalid UTF-16 input (mismatched surrogate pairs) in source, even if that's unlikely to happen.