Hi,

Could somebody please explain why code below is not valid and should throw error:

    var f$ocAdSY3Tpb1eMB$SzVylg0yezu $sJP10cUAn8eqvikoKhhZUMK38 Z81_40Hv1sSvoeoi3iZY0UQeSfmt Xo9XkP8XwwVcJiquogmXMrCeF4E
    read f$ocAdSY3Tpb1eMB$SzVylg0yezu
    cmp 100 f$ocAdSY3Tpb1eMB$SzVylg0yezu $sJP10cUAn8eqvikoKhhZUMK38
    ifeq $sJP10cUAn8eqvikoKhhZUMK38 -1
        call mSP3RrLQPuEEpoXMDXnK7TZiD0EBRgdJCcLKuTJ f$ocAdSY3Tpb1eMB$SzVylg0yezu
    end
    ifneq $sJP10cUAn8eqvikoKhhZUMK38 0
        msg "7//77"
    end
    ifeq $sJP10cUAn8eqvikoKhhZUMK38 1
        call PbZ9l_m4S$aTW8jy9eHsKxBTp9p3h '5'
    end
    proc mSP3RrLQPuEEpoXMDXnK7TZiD0EBRgdJCcLKuTJ $$
        b2a $$ $$ Z81_40Hv1sSvoeoi3iZY0UQeSfmt Xo9XkP8XwwVcJiquogmXMrCeF4E
        msg f$ocAdSY3Tpb1eMB$SzVylg0yezu Z81_40Hv1sSvoeoi3iZY0UQeSfmt Xo9XkP8XwwVcJiquogmXMrCeF4E
    end
    proc PbZ9l_m4S$aTW8jy9eHsKxBTp9p3h $_
        a2b $_ $_ $_ $_
        call mSP3RrLQPuEEpoXMDXnK7TZiD0EBRgdJCcLKuTJ $_
    end

I've made an incomplete Rust translation. I gave up on translating advanced tests, random tests and the optiming brainfuck interpreter from other languages, since the code is really hard to understand. Nevertheless, it has a complete solution, a basic brainfuck interpreter, all fixed tests and all invalid input tests. Maybe someone else can translate the rest. Or maybe it can be approved as is, so that people can have at least some fun with writing a compiler in Rust. I spent a lot of time on this

Link in description have content removed.

But I found it here:

https://www.reddit.com/r/ProgrammerHumor/comments/ba55q2/i_present_you_the_miracle_sort

You cannot "import typing" in Python 3.10 when testing.

Error below:
Traceback (most recent call last):
File "/workspace/default/tests.py", line 2, in
File "/workspace/default/solution.py", line 2, in
File "/workspace/default/preloaded.py", line 11, in
File "", line 1027, in _find_and_load
File "", line 1002, in _find_and_load_unlocked
File "", line 945, in _find_spec
File "/workspace/default/.venv/lib/python3.10/site-packages/_distutils_hack/init.py", line 88, in find_spec
TypeError: str.format() argument after ** must be a mapping, not int

If you didn't intend this to be valid

var x
# Same as set x '\n'
set x '
'

# Same as msg "A\nmultiline\nstring"
msg "A
multiline
string"

then you should change

CharElement -> <any characters other than ', ", or \>
    | '\\' | "\'" | '\"'
    | '\n' | '\r' | '\t'

to

CharElement -> <any characters other than ', ", \, or EOL>
    | '\\' | "\'" | '\"'
    | '\n' | '\r' | '\t'

Variables [...] cannot be used before defined.

At least in Python, this is never tested. Same issue as below. Please either remove the requirement or put it in the Error Handling section and add a test case.

ifeq, ifneq and wneq [...] can appear inside a proc.

At least in Python, this is never tested. Test cases should be added or the requirement should be removed.

My current solution fails on such cases locally, but passes all fixed tests before timing out on random tests for unrelated reasons.

Is there a limited, unlimited, or undefined number of vars allowed to be defined?

In Python, End before begining a block test contains an unintended syntax error at line 2:

end
msg " That's end"

The spec doesn't allow unescaped ' in strings (see String and CharElement definitions). This input should never be tested, because it's not listed in the Error Handling section. My current solution passes this test just because of a lexer error, without recongizing an unmatched end. I suggest changing the code to just

end

Other languages probably need this fix as well.

In Python, extected and actual outputs from interpreted BF are compared as strings, so error messages from the test framework look like the following:

'O\r\x06\x01O\r\x0c\x01O\r\x0c\x01' should equal 'O\r\x06\x01O\r\x06\x01\x00\r\x06\x01'

However, many msgs feature numbers and not strings, and I have to decipher them every time. I suggest also printing expected and actual as lists of ints. Currently, expected is already printed this way:

Expected output : [79, 13, 6, 1, 79, 13, 6, 1, 0, 13, 6, 1]

but not actual. So I'm essentially asking to include actual too. Maybe this applies to other languages as well.

Dart 2.14 should be enabled.

What does it do with a proc that uses a variable defined before the proc definition in a call before the variable definition?

Something like

var y
call proc varx y
msg y

var x
set x 3
proc varx out
    set out x
end

Would that be a variable accessed before definition error because of macro-style rules?

I think there is an error in random tests for C. My solution passes all static tests and a few hundred random tests before causing this error:
Test Crashed
Caught unexpected signal: 6

Maybe there is a memory leak in the random test generator? I tested my solution locally, there are no crashes, Valgrind shows no memory issues and even after running my code in an endless loop ram usage is constant.

• Python new test framework should be used (Refer this & this for more detail)

• Ruby 3.0 should be enabled (Refer this & this for more detail)

This one is a hell of a journey... :o

Some typos or suggestions here and there:

Sample tests: ErrorWhen('Nested produces',""" -> "procedures"?

From the description (hopping I don't tell you shit x) ):

• "And it would be better if you were" (prologue)
• "make sure that the pointer points to the correct cell" (not sure)
• "while having the same functionality than long long codes." ?
• "Requirement" (title)
• "You are given a code that complies with the following specification"
• "Character literals are just numbers"
• "The length of a list will always be in range [1,256]."
• "where C represents a 100-length list"

In control flow:

• " Begins a procedure block."

Error handling:

• "If any situation mentioned below occured, it just throws anything."
• "any other invalid forms showing up in the final tests" (?)
• "Arguments for an instruction are too many or too few" or "the number of arguments for..." ?
• "Nested produces." ?
• "End before beginning a block"
• "Undefined produce" ?
• "If you are stuck on some instructions, you can view look at (?) the following links."

About the BF interpreter:

• use present rather than imperative? (you use present a bit farther in the text)
• "cells value are wrapped..."
• "Loops that only contain_s_ ..., return_s_"
• not sure about what you wanna exactly say with the next part of that sentence (maybe that's on me, tho. I mean: I understand the meaning, but not the sentence itself x) )

cheers