Alex Bethel
594968f781
Remove latent debug println for BFF input
2021-07-22 22:11:55 -05:00
Alex Bethel
9beb45adf0
Silently fail when calling a non-function
...
The most cursed possible way to deal with this error.
2021-07-16 19:02:51 -05:00
Alex Bethel
56623de96a
Make integer coercion infallible
2021-07-16 18:56:45 -05:00
Alex Bethel
f6e6f8cea1
Fix function call type error message
2021-07-15 14:24:07 -05:00
Alex Bethel
a4d815cf7c
Make consts accessible from AbleScript code
2021-07-13 14:22:06 -05:00
Alex Bethel
53e624fdff
Merge branch 'feature/read'
2021-06-19 17:34:19 -05:00
Alex Bethel
09d551075a
Merge 'feature/forty-two' into master
2021-06-19 17:32:12 -05:00
Alex Bethel
f7ac2a1a43
Implement read semantics in interpreter
...
Also added a test file `iotest.able` to just read data and print
it (the `cat` of AbleScript I guess).
2021-06-18 16:05:50 -05:00
Erin
2ec416db97
Implemented read in Parser
2021-06-18 20:28:53 +02:00
Alex Bethel
b26c0ab639
Clippy conformance
2021-06-16 10:35:06 -05:00
Alex Bethel
90c3e31824
Fix ignored unit tests in interpret.rs
2021-06-15 11:46:01 -05:00
Alex Bethel
d0f7052290
Fix unit tests
2021-06-15 11:29:52 -05:00
Alex Bethel
c35f3d80ff
rustfmt: whoops, let's put a semicolon there
...
maybe I should have actually looked at what rustfmt produced before I
just blindly accepted it and pushed it onto master.
2021-06-15 10:26:44 -05:00
Alex Bethel
f02b33d564
rustfmt: break long line
2021-06-15 10:24:50 -05:00
Alex Bethel
0e6bf2b27e
Use pass-by-reference for variables, pass-by-value for expressions
2021-06-15 09:51:00 -05:00
Alex Bethel
5ac9117651
Implement most of pass-by-reference
...
We need some parser changes to make it work fully: function arguments
are now identifiers rather than expressions.
2021-06-15 09:51:00 -05:00
Alex Bethel
e709f398f7
Implement functio declaration & calling
2021-06-15 09:51:00 -05:00
HTG-YT
aa33fe88db
comply with the move of rickroll
2021-06-14 20:53:27 +08:00
HTG-YT
087768fcbc
move rickroll content into a file
2021-06-14 09:42:23 +08:00
HTG-YT
1bba812018
Update interpret.rs
2021-06-13 13:22:30 +08:00
HTG-YT
141feac31c
handle StmtKind::Rickroll
2021-06-13 13:22:01 +08:00
Alex Bethel
ede6eccc71
Make arithmetic errors evaluate to 42
2021-06-12 10:48:44 -05:00
Alex Bethel
1a8f17339e
Reimplement BF function declaration semantics
2021-06-12 09:26:21 -05:00
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
Alex Bethel
0fe7819e28
Fix interpreter variable persistence bug
2021-06-08 19:21:33 -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
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
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
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
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
