This is a compiler for a custom programming language called "brainunfuck". "brainunfuck" compiles to brainfuck. It also contains an own interpreter for brainfuck, to immedeately run compiled brainfuck code.
npm i -g brainunfuck
Node Version 14 is recommended. Untested with versions lower than that.
Our example file:
print 'A';
Compiled brainfuck code using unfuck compile ./path/to/file.unfuck:
[-]+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++.
Output using unfuck run ./path/to/file.unfuck or unfuck run --no-compiler ./path/to/compiled/file.b:
A
A big limitation is memory allocation. All memory has to be "allocated" at compile time, since brainfuck doesn't allow us to get the current position on the band. This means, that you basically only have global variables, if you define variables in loops, the same cells on the band in brainfuck are used on each iteration.
The same applies to all static strings or numbers in loops. They are redifined on every iteration, but on the exact same cells as in the last iteration.
5; <- integer literal
'A'; <- char literal (single quoted)
"Hello"; <- string literal (double quoted)
Currently, only addition and subtraction is implemented
5+5;
5-5;
Valid variable names only contain the letters [a-z]
int $var; <- variable initalization
$var = 5; <- variable assignment
$var + 5; <- variable reference
if 0 {
print "I won't be printed...";
}; <- note the semicolon at the end of the if clause
if 1 {
print "I WILL be printed!";
}; <- note the semicolon at the end of the if clause
int $i;$i=10;
while $i {
print "I will be printed 10 times!!!";
$i = $i - 1;
}; <- also here, semicolon at the end
The command line utility contains an option to compile and translate brainfuck code to valid c++ code. Just run
unfuck translate --language c++ ./path/to/file.unfuck
If you wanted to compile raw brainfuck code, without compilation, run
unfuck translate --language c++ --no-compiler ./path/to/file.b