18 commits

Author	SHA1	Message	Date
Alex Bethel	1a8f17339e	Reimplement BF function declaration semantics	2021-06-12 09:26:21 -05:00
Alex Bethel	dfededfe26	Fix all 0..0 span placeholders in interpret.rs	2021-06-07 19:57:44 -05:00
Alex Bethel	3bca3f88a6	Repair interpreter after parser changes	2021-06-07 16:20:20 -05:00
Erin	7b1546387e	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	d80f47716d	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	2c35691ec4	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	1c2032ab87	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	e79fc9a005	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	e31b8fb00d	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	f98c4d83d9	Minor Changes	2021-05-03 19:33:21 -05:00
Erin	d80b5514ce	Added tests and loop flow	2021-05-02 18:12:51 +02:00
Erin	f8db60bc7c	Added T-Dark block ... - obeyed clippy	2021-05-02 17:38:12 +02:00
Erin	5c00446c59	Implemented function calls	2021-04-29 18:50:51 +02:00
Erin	00a464321a	Added parsing of conditionals	2021-04-27 13:48:56 +02:00
Erin	fc8c3a3499	Made parser to throw error when unexpected EOF	2021-04-27 11:57:11 +02:00
Erin	f7d1287fd5	Implemented abool ... - Tidied up code	2021-04-18 23:40:41 +02:00
Erin	7026711b64	Initial parser work	2021-04-18 16:39:43 +02:00
able	08af75fbda	variable things added	2021-04-13 18:01:19 -05:00