50 lines
1.7 KiB
JavaScript
50 lines
1.7 KiB
JavaScript
function brainLuck(code, input) {
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var output = '',
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data = [],
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pointer = 0,
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input = input.split('');
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for(var i = 0, len = code.length; i < len; i++) {
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var cmd = code[i];
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if(cmd === '>') ++pointer;
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else if(cmd === '<') --pointer;
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else if(cmd === '+') data[pointer] = ((data[pointer] || 0) + 1) % 256;
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else if(cmd === '-') data[pointer] = ((data[pointer] || 0) + 255) % 256;
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else if(cmd === '.') output += String.fromCharCode(data[pointer] || 0);
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else if(cmd === ',') data[pointer] = (input.shift() || '').charCodeAt(0);
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else if((cmd === '[' && !data[pointer]) ||
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(cmd === ']' && data[pointer])) i = matchBracket(code, i);
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}
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return output;
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}
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function matchBracket(x, index) {
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var dir = x[index] === ']' ? -1 : 1,
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seek = 0;
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if(dir === -1) {
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for(var i = index; i >= 0; i--) {
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var char = x[i];
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if (char === ']') seek++;
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else if (char === '[') seek--;
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if(seek === 0) return i;
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}
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} else {
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for(var i = index, len = x.length; i < len; i++) {
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var char = x[i];
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if (char === '[') seek++;
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else if (char === ']') seek--;
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if(seek === 0) return i;
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}
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}
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}
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var result = brainLuck('\
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,>+>>>>++++++++++++++++++++++++++++++++++++++++++++>++++++++++++++++++++++++++++++++<<<<<<[>[>>>>>>+>+<<<<<<<-]>>>>>>>[<<<<<<<+>>>>>>>-]<[>++++++++++[-<-[>>+>+<<<-]>>>[<<<+>>>-]+<[>[-]<[-]]>[<<[>>>+<<<-]>>[-]]<<]>>>[>>+>+<<<-]>>>[<<<+>>>-]+<[>[-]<[-]]>[<<+>>[-]]<<<<<<<]>>>>>[++++++++++++++++++++++++++++++++++++++++++++++++.[-]]++++++++++<[->-<]>++++++++++++++++++++++++++++++++++++++++++++++++.[-]<<<<<<<<<<<<[>>>+>+<<<<-]>>>>[<<<<+>>>>-]<-[>>.>.<<<[-]]<<[>>+>+<<<-]>>>[<<<+>>>-]<<[<+>-]>[<+>-]<<<-]', '\n');
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console.log(result);
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