192 letters - forked from: BrainF*ck interpreter challenge
/**
* Copyright keim_at_Si ( http://wonderfl.net/user/keim_at_Si )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/2zxh
*/
// forked from keim_at_Si's BrainF*ck interpreter challenge
package {
import flash.events.*;
import flash.display.*;
import com.bit101.components.*;
public class BFInterpreter extends Sprite {
// my current brainf*ck interpreter (192letters)----------------------------------------------------------------------------------------------------
function $(b,i){with(i){for(s=[x=k=0],p=-1,o=[];c=b[k<0?p--:++p];)k?k-=c>>6&&c-92:(c-=44)?c-2?c<2?s[x]-=c:c&1?c&2?s[x]?0:k=1:p+=k=-1:s[x+=c-17]||=0:o.push(s[x]):s[x]=shift()||(b={});return o}}
// User Interface ----------------------------------------------------------------------------------------------------
function BFInterpreter() { addEventListener(Event.ADDED_TO_STAGE, _setup); }
private function _setup(event:Event) : void {
event.target.removeEventListener(event.type, arguments.callee);
_source = _newTextArea("source :", 20, 200);
_input = _newTextArea("input :", 240, 18);
_output = _newTextArea("output :", 280, 160);
new PushButton(this, 132, 221, "execute", _execute).setSize(200, 18);
// Hello, world! (72, 101, 108, 108, 111, 44, 32, 119, 111, 114, 108, 100, 33)
_source.text = "+++++++++[>++++++++>+++++++++++>+++++<<<-]>.>++.+++++++..+++.>-.------------.<++++++++.--------.+++.------.--------.>+.";
}
private function _newTextArea(label:String, ypos:Number, height:Number) : TextArea {
var textArea:TextArea = new TextArea(this, 32, ypos);
textArea.setSize(400, height);
new Label(this, 32, ypos-20, label);
return textArea;
}
private function _execute(event:Event) : void {
var sourceCode:String, sourceChars:Array=[], inputChars:Array=[], outputChars:Array, i:int;
// translate input text to char[]
sourceCode = _source.text.replace(/[^<>+\-.,[\]]/gm, "");
for (i=0; i<sourceCode.length; i++) sourceChars.push(sourceCode.charCodeAt(i));
for (i=0; i<_input.text.length; i++) inputChars.push(_input.text.charCodeAt(i));
// null for the end of char[]
sourceChars.push(0);
inputChars.push(0);
// execute interpreter
outputChars = $(sourceChars, inputChars);
// translate output char[] to text
for (i=0; i<outputChars.length; i++) _output.text += String.fromCharCode(outputChars[i]);
_output.text += "\n";
}
private var _source:TextArea, _input:TextArea, _output:TextArea;
}
}