16 commits

Author	SHA1	Message	Date
Alex Bethel	426aee6a2b	Repair interpreter after parser changes	2021-06-07 16:20:20 -05:00
Erin	902d8b914c	Unified span terminology ... - Add more derivations, because it's required by another parts of project	2021-06-07 22:21:21 +02:00
Alex Bethel	ce02aebd91	Use impl Value rather than trait BfWriter ... It probably makes more sense to be writing values with `Value::bf_write` than to go for the complexity of using a trait to allow `Writer::write_value` (which also looks ambiguous because it's not immediately clear that a generic name like "write_value" relates to BF or AbleScript).	2021-06-02 18:20:30 -05:00
Alex Bethel	326d0511e7	Add Brainfuck functio interpretation ... BF functios can now be declared and called from AbleScript code. Function parameters supplied from AbleScript are serialized manually into byte sequences using the `BfWriter` trait, and are available from BF code using the input operator, `,`. At the moment, BF functios simply write output to stdout, and are therefore incapable of communicating results to the rest of the program; this might change in the future if we can get something close to pass-by-reference working.	2021-06-02 15:29:31 -05:00
Alexander Bethel	109c77eeb2	Implement more statements ... Added variable declaration, `if` statements, `loop` statements, variable assignment, and variable banning to go along with printing (which was already implemented). We still need function declarations, brainfuck declarations, function calls, and the control flow operators "break" and "hopback".	2021-05-24 10:50:26 -05:00
Alexander Bethel	b625a71711	Allow abool -> bool coercion ... The expression `sometimes & true` now evaluates to `true` 50% of the time and false 50% of the time, rather than throwing a type error because `sometimes` is not a bool.	2021-05-21 12:25:37 -05:00
Alexander Bethel	eccc00ff81	Implement basic interpreter ... Added code for interpreting parsed AbleScript expressions and statements, and hooked it up to the REPL.	2021-05-20 18:18:01 -05:00
able	bdf27c83da	Minor Changes	2021-05-03 19:33:21 -05:00
Erin	051f6e781f	Added tests and loop flow	2021-05-02 18:12:51 +02:00
Erin	ecce080378	Added T-Dark block ... - obeyed clippy	2021-05-02 17:38:12 +02:00
Erin	ca60f818eb	Implemented function calls	2021-04-29 18:50:51 +02:00
Erin	f3779deeb5	Added parsing of conditionals	2021-04-27 13:48:56 +02:00
Erin	3f9e6b72cc	Made parser to throw error when unexpected EOF	2021-04-27 11:57:11 +02:00
Erin	e020fc4267	Implemented abool ... - Tidied up code	2021-04-18 23:40:41 +02:00
Erin	48dd930872	Initial parser work	2021-04-18 16:39:43 +02:00
able	bc1eb42af4	variable things added	2021-04-13 18:01:19 -05:00