Alex Bethel
1a8f17339e
Reimplement BF function declaration semantics
2021-06-12 09:26:21 -05:00
Erin
ae3a7b7c8a
Better comment
2021-06-11 19:44:53 +02:00
Erin
76e5fb9043
Removed todo when unknown token
2021-06-11 18:34:34 +02:00
Erin
8dbf93caa5
Fixed invalid spanning of UnexpectedToken in parse_expr
2021-06-11 18:31:25 +02:00
Erin
f3c459f26e
BF code is now Vec<u8>
2021-06-11 18:10:11 +02:00
Erin
eecde7635c
Basic BfFunctio support
2021-06-11 17:52:47 +02:00
Alex Bethel
2a428e8415
Re-enable assignment semantics
2021-06-11 10:05:48 -05:00
Erin
588f69b710
Added variable assignment to parser
...
- Fixed parse error, that `rlyeh` returned HopBack
2021-06-11 16:59:40 +02:00
HTG-YT
6a6658fd75
add nevergonnagiveyouup constant
2021-06-11 15:26:30 +08:00
HTG-YT
6d7fbb3514
add interessant and funny constants
2021-06-11 15:19:27 +08:00
Alex Bethel
0fe7819e28
Fix interpreter variable persistence bug
2021-06-08 19:21:33 -05:00
Alex Bethel
39c5709db7
Better error handling in REPL
...
We have much better spanned expression support, so now we get to show
it off!
2021-06-07 20:08:38 -05:00
Alex Bethel
bdb32c4599
Remove 0..0 placeholder from unexpected_eof()
2021-06-07 20:03:26 -05:00
Alex Bethel
dfededfe26
Fix all 0..0 span placeholders in interpret.rs
2021-06-07 19:57:44 -05:00
Alex Bethel
b6a4ecba29
Fix unit tests
2021-06-07 17:35:49 -05:00
Alex Bethel
aedeeb2512
Remove giant comment block left in by mistake
2021-06-07 16:28:27 -05:00
Alex Bethel
3bca3f88a6
Repair interpreter after parser changes
2021-06-07 16:20:20 -05:00
Erin
717d592710
Added T-Dark test
2021-06-07 23:06:13 +02:00
Erin
84f58dab3d
Added tests, Bugfix
...
- Originally, it spanned from operator (bug)
2021-06-07 22:58:28 +02:00
Erin
99ebd71dac
Added missing mut
2021-06-07 22:24:43 +02:00
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
Erin
beffef80c6
Changed position terminology
2021-06-07 21:28:24 +02:00
Erin
17a7f33c0b
Removed unwraps, added Rlyeh
2021-06-07 11:07:50 +02:00
Erin
42df59705b
Implement function calls
...
- And printing
- Revised terminology in Lexer
- Control flow
2021-06-07 11:00:06 +02:00
Erin
f0cd6cd0ad
Added logical operators
2021-06-07 09:17:30 +02:00
Erin
927ad5e955
Binary operator boilerplate reduction
2021-06-07 09:17:18 +02:00
Erin
afee5fb82d
Added basic parsing
...
- Expressions
- If, Functio
2021-06-07 00:09:45 +02:00
Erin
d66874624b
Initial chthulic error impl in Lexer
...
- See discussions #17
2021-06-06 23:15:11 +02:00
Erin
b9d10fae03
AST revamp
...
- Unified terminology of span in error.rs
2021-06-06 23:13:48 +02:00
Erin
e5c6feacb9
Updated AST
2021-06-06 21:09:18 +02:00
Erin
bccf5bc74b
Removed custom Lexer, reorganised Token definition
...
- As peeking will not be involved in parsing, it was removed
2021-06-06 20:28:13 +02:00
Erin
935ba3b791
Deleted old parser
2021-06-06 20:05:18 +02:00
Alex Bethel
08b4fff20d
Correct spelling of "occurred"
2021-06-05 08:50:20 -05:00
Alex Bethel
2cb915dd24
Prettier error handling
2021-06-04 18:56:26 -05:00
Alex Bethel
98b2fae6f3
Clean up eval_expr some more
...
I keep going back and forth on how I want this block to look :P
Anyway, this is *probably* its final-ish form, until the parser gets
re-written.
2021-06-02 18:41:20 -05:00
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
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
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
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
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
Alex Bethel
Erin
Able