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Author SHA1 Message Date
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
Alex Bethel b3866eea9e Fix panic on arithmetic error 
Divide by zero and add, subtract, or multiply with overflow are all
caught now and reported as an ArithmeticError, rather than causing the
interpreter to panic.
 2021-05-30 13:32:29 -05:00
Alex Bethel d13c22a473 More thorough unit tests 2021-05-30 13:32:29 -05:00
Alex Bethel 7bfefd3ba1 Add some unit tests to interpret.rs 
Currently `overflow_should_not_panic` and `variable_persistence` both
fail due to bugs in the interpreter.
 2021-05-30 13:32:29 -05:00
Able 3e94e9e78c Merge pull request #27 from AlexBethel/master 2021-05-29 17:14:25 -05:00
Alex Bethel fcfa83a8a6 Make base-55 encoding & decoding match 
Changed "U"'s encoding to -210, so now when the README claims "U =
-210", it's actually accurate :)
 2021-05-29 14:24:46 -05:00
Alex Bethel 00e80e9740 Use single-letter identifiers as base-55 digits 2021-05-29 10:45:39 -05:00
Able cedc52024c Merge pull request #26 from Seppel3210/patch-1 2021-05-28 05:10:43 -05:00
Seppel3210 bbfc2351f9 Change "*" versions to explicit versions 
Change "*" versions to explicit versions in Cargo.toml
 2021-05-28 09:30:16 +02:00
Able 55a0d9923e Update README.md 2021-05-27 17:51:08 -05:00
Able 7379f9650c Merge pull request #24 from AlexBethel/master 2021-05-25 23:06:08 -05:00
Alex Bethel 51db37f1fe Improve name & documentation accuracy 
Renamed ControlFlow -> HaltStatus because that's what the enum really
is -- a status on why something halted. Also reviewed `interpret.rs`'s
documentation and fixed a few things that were out of date.
 2021-05-25 21:55:02 -05:00
Alexander Bethel 7537b4ac98 Implement break and hopback statements 2021-05-25 21:22:38 -05:00
Alexander Bethel e7560f9364 Better abstractions, implement scoping rules 2021-05-25 13:26:01 -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
Able b37c189da9 Slightly more curse 2021-05-24 01:18:36 -05:00
Able 0f1a106381 Merge pull request #22 from AlexBethel/master 2021-05-21 12:29:03 -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 464337bd53 Make ablescript -f run interpreter 
`ablescript -f foo.able` will now both parse and interpret `foo.able`,
rather than just parsing it.
 2021-05-20 18:24:18 -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 2febc944e4 Merge pull request #18 from T-Dark0/tdark-brainfuck 2021-05-15 20:34:29 -05:00
tdark 1306c797c8 Added support for specifying a tape size limit 2021-05-15 18:39:49 +02:00
tdark 99758a177b Implemented brainfuck interpreter 2021-05-15 18:10:50 +02:00
Able 7f5576c119 Update README.md 2021-05-14 10:52:16 -05:00
Able 598917bf58 Update README.md 2021-05-11 13:39:41 -05:00
able fafe6cf672 consider using able brand products 2021-05-05 07:33:40 -05:00
able ac88a2e3c6 Brain fuck work 2021-05-04 22:23:17 -05:00
able e2b7239992 README changes 2021-05-04 21:29:51 -05:00
able f98c4d83d9 Minor Changes 2021-05-03 19:33:21 -05:00
Able 785ddda4cf Merge pull request #15 from erindesu/master 
Fixed some incompatible old code
 2021-05-03 18:41:23 -05:00
Erin 1618262948 Tidy up 2021-05-03 23:02:19 +02:00
Erin 5bdbc2bbb0 Obeyed our paperclip overlord + fmt 2021-05-03 21:36:32 +02:00
Erin 7057c3cfef Fixed some incompatible old code 
- Added assignment support
- Reduced boilerplate
- Removed `else`
 2021-05-03 21:35:43 +02:00
Erin c0ecf5f2a3 Variable assignment implemented 2021-05-03 09:54:27 +02:00
Able 045ca17b52 Merge pull request #14 from erindesu/master 2021-05-03 02:17:38 -05:00
Erin 4b2d306ccb Fixed #13 2021-05-03 08:47:52 +02:00
Able a0b3f7c34a Merge pull request #12 from erindesu/master 2021-05-02 12:49:30 -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 ecd972e55d Parser production ready 
- TODO: T-Dark block
- cargo fmt
- Obeyed our clippy overlord
 2021-05-02 16:48:33 +02:00
Erin 4a9b656093 Parser implements examples 
- Function call is now stmt (muhehe)
 2021-05-02 15:43:25 +02:00
Erin 91bd015e9b Added basic math operations 
- cargo fmt
 2021-05-02 00:39:08 +02:00
Erin d7cf1b013d Divided token types 
- Item = Expr | Stmt
- Added REPL (AST dump)
- Removed operator parsing because it was horrible and I need to redo it
 2021-05-01 13:44:58 +02:00
Erin c26c4a14bb Tidy up 2021-04-29 19:19:35 +02:00
Erin 5c00446c59 Implemented function calls 2021-04-29 18:50:51 +02:00
Erin 27a8de70fa Bugfix: Peeking 
- Fixed `PeekableLexer` next to not-be passtrough to iterator
- Made error handling depend on state of Option
 2021-04-29 09:47:29 +02:00
Erin 3e019621b2 Added Peekable Lexer 
- Added wrapper for Lexer with `peek()` method
- Renamed `token` module to `lexer` as it more describe it's function
- Started work on operator flow
 2021-04-28 22:52:19 +02:00
Able 345bed5f66 Merge pull request #10 from erindesu/master 
Reimplemented parser
 2021-04-27 09:26:29 -05:00
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