"use strict";var Mode=require("./mode"),Polynomial=require("./Polynomial"),math=require("./math"),QRMaskPattern={PATTERN000:0,PATTERN001:1,PATTERN010:2,PATTERN011:3,PATTERN100:4,PATTERN101:5,PATTERN110:6,PATTERN111:7},QRUtil={PATTERN_POSITION_TABLE:[[],[6,18],[6,22],[6,26],[6,30],[6,34],[6,22,38],[6,24,42],[6,26,46],[6,28,50],[6,30,54],[6,32,58],[6,34,62],[6,26,46,66],[6,26,48,70],[6,26,50,74],[6,30,54,78],[6,30,56,82],[6,30,58,86],[6,34,62,90],[6,28,50,72,94],[6,26,50,74,98],[6,30,54,78,102],[6,28,54,80,106],[6,32,58,84,110],[6,30,58,86,114],[6,34,62,90,118],[6,26,50,74,98,122],[6,30,54,78,102,126],[6,26,52,78,104,130],[6,30,56,82,108,134],[6,34,60,86,112,138],[6,30,58,86,114,142],[6,34,62,90,118,146],[6,30,54,78,102,126,150],[6,24,50,76,102,128,154],[6,28,54,80,106,132,158],[6,32,58,84,110,136,162],[6,26,54,82,110,138,166],[6,30,58,86,114,142,170]],G15:1335,G18:7973,G15_MASK:21522,getBCHTypeInfo:function(r){for(var t=r<<10;0<=QRUtil.getBCHDigit(t)-QRUtil.getBCHDigit(QRUtil.G15);)t^=QRUtil.G15<<QRUtil.getBCHDigit(t)-QRUtil.getBCHDigit(QRUtil.G15);return(r<<10|t)^QRUtil.G15_MASK},getBCHTypeNumber:function(r){for(var t=r<<12;0<=QRUtil.getBCHDigit(t)-QRUtil.getBCHDigit(QRUtil.G18);)t^=QRUtil.G18<<QRUtil.getBCHDigit(t)-QRUtil.getBCHDigit(QRUtil.G18);return r<<12|t},getBCHDigit:function(r){for(var t=0;0!=r;)t++,r>>>=1;return t},getPatternPosition:function(r){return QRUtil.PATTERN_POSITION_TABLE[r-1]},getMask:function(r,t,e){switch(r){case QRMaskPattern.PATTERN000:return(t+e)%2==0;case QRMaskPattern.PATTERN001:return t%2==0;case QRMaskPattern.PATTERN010:return e%3==0;case QRMaskPattern.PATTERN011:return(t+e)%3==0;case QRMaskPattern.PATTERN100:return(Math.floor(t/2)+Math.floor(e/3))%2==0;case QRMaskPattern.PATTERN101:return t*e%2+t*e%3==0;case QRMaskPattern.PATTERN110:return(t*e%2+t*e%3)%2==0;case QRMaskPattern.PATTERN111:return(t*e%3+(t+e)%2)%2==0;default:throw new Error("bad maskPattern:"+r)}},getErrorCorrectPolynomial:function(r){for(var t=new Polynomial([1],0),e=0;e<r;e++)t=t.multiply(new Polynomial([1,math.gexp(e)],0));return t},getLengthInBits:function(r,t){if(1<=t&&t<10)switch(r){case Mode.MODE_NUMBER:return 10;case Mode.MODE_ALPHA_NUM:return 9;case Mode.MODE_8BIT_BYTE:case Mode.MODE_KANJI:return 8;default:throw new Error("mode:"+r)}else if(t<27)switch(r){case Mode.MODE_NUMBER:return 12;case Mode.MODE_ALPHA_NUM:return 11;case Mode.MODE_8BIT_BYTE:return 16;case Mode.MODE_KANJI:return 10;default:throw new Error("mode:"+r)}else{if(!(t<41))throw new Error("type:"+t);switch(r){case Mode.MODE_NUMBER:return 14;case Mode.MODE_ALPHA_NUM:return 13;case Mode.MODE_8BIT_BYTE:return 16;case Mode.MODE_KANJI:return 12;default:throw new Error("mode:"+r)}}},getLostPoint:function(r){for(var t=r.getModuleCount(),e=0,a=0;a<t;a++)for(var i=0;i<t;i++){for(var o=0,n=r.isDark(a,i),s=-1;s<=1;s++)if(!(a+s<0||t<=a+s))for(var R=-1;R<=1;R++)i+R<0||t<=i+R||0==s&&0==R||n==r.isDark(a+s,i+R)&&o++;5<o&&(e+=3+o-5)}for(a=0;a<t-1;a++)for(i=0;i<t-1;i++){var T=0;r.isDark(a,i)&&T++,r.isDark(a+1,i)&&T++,r.isDark(a,i+1)&&T++,r.isDark(a+1,i+1)&&T++,0!=T&&4!=T||(e+=3)}for(a=0;a<t;a++)for(i=0;i<t-6;i++)r.isDark(a,i)&&!r.isDark(a,i+1)&&r.isDark(a,i+2)&&r.isDark(a,i+3)&&r.isDark(a,i+4)&&!r.isDark(a,i+5)&&r.isDark(a,i+6)&&(e+=40);for(i=0;i<t;i++)for(a=0;a<t-6;a++)r.isDark(a,i)&&!r.isDark(a+1,i)&&r.isDark(a+2,i)&&r.isDark(a+3,i)&&r.isDark(a+4,i)&&!r.isDark(a+5,i)&&r.isDark(a+6,i)&&(e+=40);var M=0;for(i=0;i<t;i++)for(a=0;a<t;a++)r.isDark(a,i)&&M++;return e+=10*(Math.abs(100*M/t/t-50)/5)}};module.exports=QRUtil;