Assmbler_Design_JACK/pass2.h at main · DEBASMITROY2002/Assmbler_Design_JACK · GitHub

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#include <iostream>
#include <string>
#include <map>
#include <vector>

using namespace std;

class Pass2
{
    private:
        map<string, string> map_compbits;
        map<string, string> map_destbits;
        map<string, string> map_jumpbits;

        vector<string>words;

        vector<string>lines;
        SymbolTable symbolTable;
    public:
        Pass2(pair<vector<string>, SymbolTable> intermReult){
            map_compbits["0"]   =  "101010";
            map_compbits["1"]   =  "111111";
            map_compbits["-1"]   = "111010";
            map_compbits["D"]   =  "001100";
            map_compbits["A"]   =  "110000";
            map_compbits["!D"]   = "001101";
            map_compbits["!A"]   = "110001";
            map_compbits["-D"]   = "111111";
            map_compbits["-A"]   = "101010";
            map_compbits["D+1"]  = "011111";
            map_compbits["A+1"]  = "110111";
            map_compbits["D-1"]  = "001110";
            map_compbits["A-1"]  = "110010";
            map_compbits["D+A"]  = "000010";
            map_compbits["D-A"]  = "010011";
            map_compbits["A-D"]  = "000111";
            map_compbits["D&A"]  = "000000";
            map_compbits["D|A"]  = "010101";

            map_destbits["null"] = "000";
            map_destbits["M"] =    "001";
            map_destbits["D"] =    "010";
            map_destbits["MD"] =   "011";
            map_destbits["A"] =    "100";
            map_destbits["AM"] =   "101";
            map_destbits["AD"] =   "110";
            map_destbits["AMD"] =  "111";

            map_jumpbits["null"] = "000";
            map_jumpbits["JGT"] =  "001";
            map_jumpbits["JEQ"] =  "010";
            map_jumpbits["JGE"] =  "011";
            map_jumpbits["JLT"] =  "100";
            map_jumpbits["JNE"] =  "101";
            map_jumpbits["JLE"] =  "110";
            map_jumpbits["JMP"] =  "111";

            lines =        intermReult.first;
            symbolTable = intermReult.second;
        }

        ~Pass2(){
            string hack_file_name = "obj";
            hack_file_name+=".hack";
            FILE* hack_file = fopen(hack_file_name.c_str(), "w");
            for(auto w:words)
                fprintf(hack_file,"%s\n",(w.c_str()));
            fclose(hack_file);
            lines.clear();

            cout<<"\nHack file saved as "<<hack_file_name<<endl;
        }

        string decimalToBinary(int n)
        {
            string s;
            for (int i = 14; i >= 0; i--) {
                    int k = n >> i;
                    if (k & 1)
                        s.push_back('1');
                    else
                        s.push_back('0');
                }
            return s;
        }

        void convertTowords(){
            for(auto line:lines){
                string str;

                if(line[0]=='('){
                    //IGNORE
                }
                else if(line[0]=='@'){
                    str += "0";

                    string s = line.substr(1), val_15bit;

                    if(isdigit(s[0]))
                        val_15bit = decimalToBinary(stoi(s.c_str()));
                    else
                        val_15bit = decimalToBinary(symbolTable.getAddress(s));

                    str += val_15bit;
                }
                else {
                    str += "111";

                    string dest;
                    string comp;
                    string jump;
                    string aval;

                    if(line[1]=='='){
                        dest = line.substr(0,1);
                        comp = line.substr(2);
                        jump = "null";

                        aval = (comp.find("M")!=string::npos)?"1":"0";
                        for(auto &x:comp)
                            if(x=='M')
                                x = 'A';
                    }else{
                        dest = "null";
                        comp = line.substr(0,1);
                        jump = line.substr(2);

                        aval = (comp.find("M")!=string::npos)?"1":"0";
                        for(auto &x:comp)
                            if(x=='M')
                                x = 'A';
                    }

                    str = str + aval + map_compbits[comp] + map_destbits[dest] + map_jumpbits[jump];
                }
                words.push_back(str);
            }
        }

    void print_16bitWords(){
        cout<<"\n\n.... 16 bit Binary Word\n";
        for(auto word:words)
            cout<<word<<endl;
        cout<<"\t\t\t~end";
    }
};