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brainfuck
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// Spocita modulo
int modulo(int n, int b){
int h = n / b;
h = h * b;
h = n - h;
return h;
}
// Zakoduje cislo od 0 do 9 do podoby stringu
string encode(int n){
if (n == 0){
return "0";
}
else{
if (n == 1){
return "1";
}
else{
if (n == 2){
return "2";
}
else{
if (n == 3){
return "3";
}
else{
if (n == 4){
return "4";
}
else{
if (n == 5){
return "5";
}
else{
if (n == 6){
return "6";
}
else{
if (n == 7){
return "7";
}
else{
if (n == 8){
return "8";
}
else{}}}}}}}}}
return "9";
}
// Zakoduje nezaporne cele cislo do stringu
// Cislo po zakodovani je vzdy dlouhe tri znaky
// (pokud obsahuje mene nez tri cislice, jsou pridany na zacatek nuly)
string toStr(int val){
int d = val;
string res = "";
string c = "";
int h;
for (int i = 0; i < 3; i = i + 1){
h = modulo(d,10);
d = d / 10;
c = encode(h);
res = concat(c,res);
}
return res;
}
// Zkonvertuje jednu cislici obsazenou ve stringu do integeru
int decode(string s){
if (s=="0"){
return 0;
}
else {
if (s=="1"){
return 1;
}
else {
if (s=="2"){
return 2;
}
else {
if (s=="3"){
return 3;
}
else {
if (s=="4"){
return 4;
}
else {
if (s=="5"){
return 5;
}
else {
if (s=="6"){
return 6;
}
else {
if (s=="7"){
return 7;
}
else {
if (s=="8"){
return 8;
}
else {
}}}}}}}}}
return 9;
}
// Zkonvertuje cislo ve stringu do integeru
int toInt(string s){
int res = 0;
int pow = 1;
int len;
len = length(s);
for (int i = len - 1; i >= 0; i = i - 1){
string s1;
s1 = substr(s, i, 1);
int d;
d = decode(s1);
res = res + d * pow;
pow = pow * 10;
}
return res;
}
// Upravi hodnotu v pameti data na indexu p
// Pokud je isInc nulove, hodnota je dekrementovana, v opacnem pripade je inkrementovana
// Hodnoty v pameti mohou byt pouze od 0 do 255, 255 + 1 = 0, 0 - 1 = 255
string write(string data, int p, int isInc){
// nalezneme upravovanou hodnotu
auto p4 = p * 4;
string tmp;
tmp = substr(data, p4, 3);
// zkonvertujeme na int
int val;
val = toInt(tmp);
if(isInc){
// inkrementace
val = val + 1;
if(val > 255){
val = 0;
} else {}
} else {
// dekrementace
val = val - 1;
if(val < 0){
val = 255;
} else{}
}
// prevedeme zpatky na string
tmp = toStr(val);
// ziskame vse, co bylo na leve a prave strane od upravovane bunky
string l;
string r;
l = substr(data, 0, p4);
auto p44 = p4 + 3;
int len;
len = length(data);
len = len - p44;
r = substr(data, p44, len);
// a spojime zpatky dohromady s novou hodnotou
data = concat(l, tmp);
data = concat(data, r);
return data;
}
// vytiskne hodnotu ulozenou ve stringu v ASCII podobe
// tato funkce byla automaticky generovana skriptem v pythonu, autor neni magor
int print(string byte){
if(byte == "000"){
cout << "";
} else { if(byte == "001"){
cout << "\x01";
} else { if(byte == "002"){
cout << "\x02";
} else { if(byte == "003"){
cout << "\x03";
} else { if(byte == "004"){
cout << "\x04";
} else { if(byte == "005"){
cout << "\x05";
} else { if(byte == "006"){
cout << "\x06";
} else { if(byte == "007"){
cout << "\x07";
} else { if(byte == "008"){
cout << "\x08";
} else { if(byte == "009"){
cout << "\x09";
} else { if(byte == "010"){
cout << "\x0a";
} else { if(byte == "011"){
cout << "\x0b";
} else { if(byte == "012"){
cout << "\x0c";
} else { if(byte == "013"){
cout << "\x0d";
} else { if(byte == "014"){
cout << "\x0e";
} else { if(byte == "015"){
cout << "\x0f";
} else { if(byte == "016"){
cout << "\x10";
} else { if(byte == "017"){
cout << "\x11";
} else { if(byte == "018"){
cout << "\x12";
} else { if(byte == "019"){
cout << "\x13";
} else { if(byte == "020"){
cout << "\x14";
} else { if(byte == "021"){
cout << "\x15";
} else { if(byte == "022"){
cout << "\x16";
} else { if(byte == "023"){
cout << "\x17";
} else { if(byte == "024"){
cout << "\x18";
} else { if(byte == "025"){
cout << "\x19";
} else { if(byte == "026"){
cout << "\x1a";
} else { if(byte == "027"){
cout << "\x1b";
} else { if(byte == "028"){
cout << "\x1c";
} else { if(byte == "029"){
cout << "\x1d";
} else { if(byte == "030"){
cout << "\x1e";
} else { if(byte == "031"){
cout << "\x1f";
} else { if(byte == "032"){
cout << "\x20";
} else { if(byte == "033"){
cout << "\x21";
} else { if(byte == "034"){
cout << "\x22";
} else { if(byte == "035"){
cout << "\x23";
} else { if(byte == "036"){
cout << "\x24";
} else { if(byte == "037"){
cout << "\x25";
} else { if(byte == "038"){
cout << "\x26";
} else { if(byte == "039"){
cout << "\x27";
} else { if(byte == "040"){
cout << "\x28";
} else { if(byte == "041"){
cout << "\x29";
} else { if(byte == "042"){
cout << "\x2a";
} else { if(byte == "043"){
cout << "\x2b";
} else { if(byte == "044"){
cout << "\x2c";
} else { if(byte == "045"){
cout << "\x2d";
} else { if(byte == "046"){
cout << "\x2e";
} else { if(byte == "047"){
cout << "\x2f";
} else { if(byte == "048"){
cout << "\x30";
} else { if(byte == "049"){
cout << "\x31";
} else { if(byte == "050"){
cout << "\x32";
} else { if(byte == "051"){
cout << "\x33";
} else { if(byte == "052"){
cout << "\x34";
} else { if(byte == "053"){
cout << "\x35";
} else { if(byte == "054"){
cout << "\x36";
} else { if(byte == "055"){
cout << "\x37";
} else { if(byte == "056"){
cout << "\x38";
} else { if(byte == "057"){
cout << "\x39";
} else { if(byte == "058"){
cout << "\x3a";
} else { if(byte == "059"){
cout << "\x3b";
} else { if(byte == "060"){
cout << "\x3c";
} else { if(byte == "061"){
cout << "\x3d";
} else { if(byte == "062"){
cout << "\x3e";
} else { if(byte == "063"){
cout << "\x3f";
} else { if(byte == "064"){
cout << "\x40";
} else { if(byte == "065"){
cout << "\x41";
} else { if(byte == "066"){
cout << "\x42";
} else { if(byte == "067"){
cout << "\x43";
} else { if(byte == "068"){
cout << "\x44";
} else { if(byte == "069"){
cout << "\x45";
} else { if(byte == "070"){
cout << "\x46";
} else { if(byte == "071"){
cout << "\x47";
} else { if(byte == "072"){
cout << "\x48";
} else { if(byte == "073"){
cout << "\x49";
} else { if(byte == "074"){
cout << "\x4a";
} else { if(byte == "075"){
cout << "\x4b";
} else { if(byte == "076"){
cout << "\x4c";
} else { if(byte == "077"){
cout << "\x4d";
} else { if(byte == "078"){
cout << "\x4e";
} else { if(byte == "079"){
cout << "\x4f";
} else { if(byte == "080"){
cout << "\x50";
} else { if(byte == "081"){
cout << "\x51";
} else { if(byte == "082"){
cout << "\x52";
} else { if(byte == "083"){
cout << "\x53";
} else { if(byte == "084"){
cout << "\x54";
} else { if(byte == "085"){
cout << "\x55";
} else { if(byte == "086"){
cout << "\x56";
} else { if(byte == "087"){
cout << "\x57";
} else { if(byte == "088"){
cout << "\x58";
} else { if(byte == "089"){
cout << "\x59";
} else { if(byte == "090"){
cout << "\x5a";
} else { if(byte == "091"){
cout << "\x5b";
} else { if(byte == "092"){
cout << "\x5c";
} else { if(byte == "093"){
cout << "\x5d";
} else { if(byte == "094"){
cout << "\x5e";
} else { if(byte == "095"){
cout << "\x5f";
} else { if(byte == "096"){
cout << "\x60";
} else { if(byte == "097"){
cout << "\x61";
} else { if(byte == "098"){
cout << "\x62";
} else { if(byte == "099"){
cout << "\x63";
} else { if(byte == "100"){
cout << "\x64";
} else { if(byte == "101"){
cout << "\x65";
} else { if(byte == "102"){
cout << "\x66";
} else { if(byte == "103"){
cout << "\x67";
} else { if(byte == "104"){
cout << "\x68";
} else { if(byte == "105"){
cout << "\x69";
} else { if(byte == "106"){
cout << "\x6a";
} else { if(byte == "107"){
cout << "\x6b";
} else { if(byte == "108"){
cout << "\x6c";
} else { if(byte == "109"){
cout << "\x6d";
} else { if(byte == "110"){
cout << "\x6e";
} else { if(byte == "111"){
cout << "\x6f";
} else { if(byte == "112"){
cout << "\x70";
} else { if(byte == "113"){
cout << "\x71";
} else { if(byte == "114"){
cout << "\x72";
} else { if(byte == "115"){
cout << "\x73";
} else { if(byte == "116"){
cout << "\x74";
} else { if(byte == "117"){
cout << "\x75";
} else { if(byte == "118"){
cout << "\x76";
} else { if(byte == "119"){
cout << "\x77";
} else { if(byte == "120"){
cout << "\x78";
} else { if(byte == "121"){
cout << "\x79";
} else { if(byte == "122"){
cout << "\x7a";
} else { if(byte == "123"){
cout << "\x7b";
} else { if(byte == "124"){
cout << "\x7c";
} else { if(byte == "125"){
cout << "\x7d";
} else { if(byte == "126"){
cout << "\x7e";
} else { if(byte == "127"){
cout << "\x7f";
} else { if(byte == "128"){
cout << "\x80";
} else { if(byte == "129"){
cout << "\x81";
} else { if(byte == "130"){
cout << "\x82";
} else { if(byte == "131"){
cout << "\x83";
} else { if(byte == "132"){
cout << "\x84";
} else { if(byte == "133"){
cout << "\x85";
} else { if(byte == "134"){
cout << "\x86";
} else { if(byte == "135"){
cout << "\x87";
} else { if(byte == "136"){
cout << "\x88";
} else { if(byte == "137"){
cout << "\x89";
} else { if(byte == "138"){
cout << "\x8a";
} else { if(byte == "139"){
cout << "\x8b";
} else { if(byte == "140"){
cout << "\x8c";
} else { if(byte == "141"){
cout << "\x8d";
} else { if(byte == "142"){
cout << "\x8e";
} else { if(byte == "143"){
cout << "\x8f";
} else { if(byte == "144"){
cout << "\x90";
} else { if(byte == "145"){
cout << "\x91";
} else { if(byte == "146"){
cout << "\x92";
} else { if(byte == "147"){
cout << "\x93";
} else { if(byte == "148"){
cout << "\x94";
} else { if(byte == "149"){
cout << "\x95";
} else { if(byte == "150"){
cout << "\x96";
} else { if(byte == "151"){
cout << "\x97";
} else { if(byte == "152"){
cout << "\x98";
} else { if(byte == "153"){
cout << "\x99";
} else { if(byte == "154"){
cout << "\x9a";
} else { if(byte == "155"){
cout << "\x9b";
} else { if(byte == "156"){
cout << "\x9c";
} else { if(byte == "157"){
cout << "\x9d";
} else { if(byte == "158"){
cout << "\x9e";
} else { if(byte == "159"){
cout << "\x9f";
} else { if(byte == "160"){
cout << "\xa0";
} else { if(byte == "161"){
cout << "\xa1";
} else { if(byte == "162"){
cout << "\xa2";
} else { if(byte == "163"){
cout << "\xa3";
} else { if(byte == "164"){
cout << "\xa4";
} else { if(byte == "165"){
cout << "\xa5";
} else { if(byte == "166"){
cout << "\xa6";
} else { if(byte == "167"){
cout << "\xa7";
} else { if(byte == "168"){
cout << "\xa8";
} else { if(byte == "169"){
cout << "\xa9";
} else { if(byte == "170"){
cout << "\xaa";
} else { if(byte == "171"){
cout << "\xab";
} else { if(byte == "172"){
cout << "\xac";
} else { if(byte == "173"){
cout << "\xad";
} else { if(byte == "174"){
cout << "\xae";
} else { if(byte == "175"){
cout << "\xaf";
} else { if(byte == "176"){
cout << "\xb0";
} else { if(byte == "177"){
cout << "\xb1";
} else { if(byte == "178"){
cout << "\xb2";
} else { if(byte == "179"){
cout << "\xb3";
} else { if(byte == "180"){
cout << "\xb4";
} else { if(byte == "181"){
cout << "\xb5";
} else { if(byte == "182"){
cout << "\xb6";
} else { if(byte == "183"){
cout << "\xb7";
} else { if(byte == "184"){
cout << "\xb8";
} else { if(byte == "185"){
cout << "\xb9";
} else { if(byte == "186"){
cout << "\xba";
} else { if(byte == "187"){
cout << "\xbb";
} else { if(byte == "188"){
cout << "\xbc";
} else { if(byte == "189"){
cout << "\xbd";
} else { if(byte == "190"){
cout << "\xbe";
} else { if(byte == "191"){
cout << "\xbf";
} else { if(byte == "192"){
cout << "\xc0";
} else { if(byte == "193"){
cout << "\xc1";
} else { if(byte == "194"){
cout << "\xc2";
} else { if(byte == "195"){
cout << "\xc3";
} else { if(byte == "196"){
cout << "\xc4";
} else { if(byte == "197"){
cout << "\xc5";
} else { if(byte == "198"){
cout << "\xc6";
} else { if(byte == "199"){
cout << "\xc7";
} else { if(byte == "200"){
cout << "\xc8";
} else { if(byte == "201"){
cout << "\xc9";
} else { if(byte == "202"){
cout << "\xca";
} else { if(byte == "203"){
cout << "\xcb";
} else { if(byte == "204"){
cout << "\xcc";
} else { if(byte == "205"){
cout << "\xcd";
} else { if(byte == "206"){
cout << "\xce";
} else { if(byte == "207"){
cout << "\xcf";
} else { if(byte == "208"){
cout << "\xd0";
} else { if(byte == "209"){
cout << "\xd1";
} else { if(byte == "210"){
cout << "\xd2";
} else { if(byte == "211"){
cout << "\xd3";
} else { if(byte == "212"){
cout << "\xd4";
} else { if(byte == "213"){
cout << "\xd5";
} else { if(byte == "214"){
cout << "\xd6";
} else { if(byte == "215"){
cout << "\xd7";
} else { if(byte == "216"){
cout << "\xd8";
} else { if(byte == "217"){
cout << "\xd9";
} else { if(byte == "218"){
cout << "\xda";
} else { if(byte == "219"){
cout << "\xdb";
} else { if(byte == "220"){
cout << "\xdc";
} else { if(byte == "221"){
cout << "\xdd";
} else { if(byte == "222"){
cout << "\xde";
} else { if(byte == "223"){
cout << "\xdf";
} else { if(byte == "224"){
cout << "\xe0";
} else { if(byte == "225"){
cout << "\xe1";
} else { if(byte == "226"){
cout << "\xe2";
} else { if(byte == "227"){
cout << "\xe3";
} else { if(byte == "228"){
cout << "\xe4";
} else { if(byte == "229"){
cout << "\xe5";
} else { if(byte == "230"){
cout << "\xe6";
} else { if(byte == "231"){
cout << "\xe7";
} else { if(byte == "232"){
cout << "\xe8";
} else { if(byte == "233"){
cout << "\xe9";
} else { if(byte == "234"){
cout << "\xea";
} else { if(byte == "235"){
cout << "\xeb";
} else { if(byte == "236"){
cout << "\xec";
} else { if(byte == "237"){
cout << "\xed";
} else { if(byte == "238"){
cout << "\xee";
} else { if(byte == "239"){
cout << "\xef";
} else { if(byte == "240"){
cout << "\xf0";
} else { if(byte == "241"){
cout << "\xf1";
} else { if(byte == "242"){
cout << "\xf2";
} else { if(byte == "243"){
cout << "\xf3";
} else { if(byte == "244"){
cout << "\xf4";
} else { if(byte == "245"){
cout << "\xf5";
} else { if(byte == "246"){
cout << "\xf6";
} else { if(byte == "247"){
cout << "\xf7";
} else { if(byte == "248"){
cout << "\xf8";
} else { if(byte == "249"){
cout << "\xf9";
} else { if(byte == "250"){
cout << "\xfa";
} else { if(byte == "251"){
cout << "\xfb";
} else { if(byte == "252"){
cout << "\xfc";
} else { if(byte == "253"){
cout << "\xfd";
} else { if(byte == "254"){
cout << "\xfe";
} else { if(byte == "255"){
cout << "\xff";
// je potreba vsechny zavorky ukoncit :D
} else { }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
return 0;
}
// najde nasledujici ] na stejne urovni
// hleda v code od indexu starting
int findNext(string code, int starting){
// aktualni instrukci neresime
starting = starting + 1;
// jak moc jsme zanoreni
auto level = 0;
int totalLen;
totalLen = length(code);
// hledame az dokonce
for(int dummy; starting < totalLen; starting = starting + 1){
// aktualne prohledavana instrukce
string curr;
curr = substr(code, starting, 1);
if(curr == "["){
// zvysime uroven
level = level + 1;
} else { if(curr == "]"){
if(level == 0){
// pokud jsme na stejne urovni, nasli jsme
return starting;
} else {
// pokud ne, alespon dekrementujeme uroven
level = level - 1;
}
} else{}}
}
// pokud jsme nenasli, je to chyba
cout << "nemuzu najit koncovou zavorku, koncim!";
return 0 / 0;
}
// najde predesle [ na stejne urovni
// hleda v code od indexu starting dozadu
int findPrevious(string code, int starting){
// prohledavame od predesle instrukce
starting = starting - 1;
auto level = 0;
//hledame az do zacatku
for(int dummy; starting >= 0; starting = starting - 1){
// aktualne prohledavana instrukce
string curr;
curr = substr(code, starting, 1);
if(curr == "]"){
// zvysime uroven
level = level + 1;
} else { if(curr == "["){
if(level == 0){
// pokud jsme na stejne urovni, nasli jsme
return starting;
} else {
// jinak pouze snizime uroven
level = level - 1;
}
} else {}}
}
cout << "nemuzu najit pocatecni zavorku, koncim!";
return 0 / 0;
}
int interpret(string code){
int len;
len = length(code);
// pamet
string data = "000,";
// aktualni velikost pameti
auto dSize = 1;
// pointer na aktualni prvek
auto dPointer = 0;
for(int cPointer = 0; cPointer < len; cPointer = cPointer + 1){
// aktualni instrukce
string instr;
instr = substr(code, cPointer, 1);
if(instr == ">"){
// posun pointeru doprava
dPointer = dPointer + 1;
// pokud jsme na neinicializovane pameti, inicializuj ji
if(dPointer >= dSize){
data = concat(data, "000,");
dSize = dSize + 1;
} else {}
} else { if(instr == "<"){
// posun pointeru doleva
dPointer = dPointer - 1;
} else { if(instr == "+"){
// inkrementace aktualni bunky
data = write(data, dPointer, 1);
} else { if(instr == "-"){
// dekrementace aktualni bunky
data = write(data, dPointer, 0);
} else { if(instr == "."){
// vytiskni aktualni bunku
auto p4 = dPointer * 4;
string c;
c = substr(data, p4, 3);
int a;
a = print(c);
} else { if(instr == "["){
// najdi hodnotu aktualni bunky
auto p4 = dPointer * 4;
string c;
c = substr(data, p4, 3);
// pokud je nulova, skaceme, jinak nic nedelame
if(c == "000"){
cPointer = findNext(code, cPointer);
} else{}
} else { if(instr == "]"){
// najdi hodnotu aktualni bunku
auto p4 = dPointer * 4;
string c;
c = substr(data, p4, 3);
// pokud je hodnota nenulova, skaceme, jinak nic
if(c != "000"){
cPointer = findPrevious(code, cPointer);
} else{}
} else {
// efektivni parsovani komentaru v brainfucku je umisteno zde
}}}}}}}
}
return 0;
}
int main(){
// s velkym podekovanim vypujceno z http://www.hevanet.com/cristofd/brainfuck/squares.b
auto code = "++++[>+++++<-]>[<+++++>-]+<+[ >[>+>+<<-]++>>[<<+>>-]>>>[-]++>[-]+ >>>+[[-]++++++>>>]<<<[[<++++++++<++>>-]+<.<[>----<-]<] <<[>>>>>[>>>[-]+++++++++<[>-<-]+++++++++>[-[<->-]+[<<<]]<[>+<-]>]<<-]<<- ]";
int a;
a = interpret(code);
return 0;
}