Last active
September 26, 2016 04:29
-
-
Save tiago/5038c9059b5bcf33b717ef449a50b06d to your computer and use it in GitHub Desktop.
Pixels Camp Challenge #2 - Remove checks
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
var c = (program) => { | |
var register = undefined; | |
var memory = [0]; | |
var memory_pointer = 0; | |
var instruction_pointer = 0; | |
var find_matching = (start, stop, direction) => { | |
var level = 1; | |
instruction_pointer += direction; | |
while(level) { | |
instruction_pointer += direction; | |
if (instructions[instruction_pointer] == start) level++; | |
if (instructions[instruction_pointer] == stop) level--; | |
} | |
}; | |
var commands = { | |
moo: () => { | |
find_matching('moo', 'MOO', -1); | |
instruction_pointer--; | |
}, | |
mOo: () => { | |
memory_pointer && memory_pointer--; | |
}, | |
moO: () => { | |
memory_pointer++; | |
memory[memory_pointer] = memory[memory_pointer] || 0; | |
}, | |
mOO: () => { | |
var index = memory[memory_pointer]; | |
if (index != 3) { | |
commands[tokens[index]](); | |
} else { | |
instructions = []; | |
} | |
}, | |
Moo: () => { | |
if (memory[memory_pointer] == 0) { | |
memory[memory_pointer] = input_char(); | |
} else { | |
output_char(String.fromCharCode(memory[memory_pointer])); | |
} | |
}, | |
MOo: () => { | |
memory[memory_pointer]--; | |
}, | |
MoO: () => { | |
memory[memory_pointer]++; | |
}, | |
MOO: () => { | |
if (memory[memory_pointer] === 0) { | |
find_matching('MOO', 'moo', 1); | |
} | |
}, | |
OOO: () => { | |
memory[memory_pointer] = 0; | |
}, | |
MMM: () => { | |
if (register) { | |
register = memory[memory_pointer]; | |
} else { | |
memory[memory_pointer] = register; | |
register = undefined; | |
} | |
}, | |
OOM: () => { | |
Array.from(memory[memory_pointer]+'').map(output_char); | |
}, | |
oom: () => { | |
memory[memory_pointer] = input_char(); | |
} | |
}; | |
var tokens = Object.keys(commands); | |
var instructions = program.match(new RegExp(tokens.join('|'), 'g')); | |
while (instructions[instruction_pointer]) { | |
commands[instructions[instruction_pointer]](); | |
instruction_pointer++; | |
} | |
}; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment