118 lines
1.3 KiB
Plaintext
118 lines
1.3 KiB
Plaintext
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Title : Design suitable data structures and implement Pass 1 of two pass macro-processor
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CODE
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#include <iostream>
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#include <bits/stdc++.h>
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using namespace std;
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int main(){
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vector<string> mdt;
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vector<string> mnt;
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vector <char> pnt[4];
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fstream file;
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int pointer=0;
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file.open("macro.txt",ios::in);
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string s = "",str="";
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int c = 0,r=0,a=-1,b=0;
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while(getline(file,s)){
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if(s=="MACRO"){
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b=1;
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c=1;
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a++;
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continue;
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}
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for(auto it:s){
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if(r==1){
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int z=0;
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for(auto x:pnt[a]){
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if(x==it){
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z=1;
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}
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}
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if(z==0){
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pnt[a].push_back(it);
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}
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r=0;
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}
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if(it=='&'){
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r=1;}
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}
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if(b==1){
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str="";
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int v=0;
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char t=s[v];
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while(t!=' '){
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str=str+t;
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v++;
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t=s[v];
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}
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mnt.push_back(str);
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b=0;
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}
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if(c==1){
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mdt.push_back(s);
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}
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if(s=="MEND"){
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c=0;
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}
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}
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file.close();
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cout<<"MDT"<<endl;
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for(auto it:mdt){
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cout<<it<<endl;
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}
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cout<<endl;
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for(int i = 0 ; i<=a ; i++){
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cout<<"PNT"<<i<<endl;
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for(auto it:pnt[i]){
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cout<<it<<endl;
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}
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cout<<endl;
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}
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cout<<"MNT"<<endl;
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for(auto it:mnt){
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cout<<it<<endl;
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}
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return 0;
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}Input File : macro.txt
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MACRO
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ONE &O,&N,&E=AREG
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MOVER &E,&O
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ADD &E,&N
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MOVEM &E,&O
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MEND
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MACRO
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TWO &T,&W,&O=DREG
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MOVER &O,&T
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ADD &O,&W
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MOVEM &O,&T
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MEND
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START
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READ O
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READ T
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ONE O,9
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TWO T,7
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STOP
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O DS 1
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T DS 1
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END
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OUTPUT :
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MDT
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ONE &O,&N,&E=AREG
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MOVER &E,&O
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ADD &E,&N
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MOVEM &E,&O
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MEND
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TWO &T,&W,&O=DREG
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MOVER &O,&T
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ADD &O,&W
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MOVEM &O,&T
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MEND
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PNT0
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O
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N
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E
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PNT1
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T
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WO
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MNT
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ONE
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TWO
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