/tech/ - Soyence and Technology

[code]awk_macro_vm(){ awk 'BEGIN{r[0]=0;r[1]=1;r[x]=1;ic=1;while(r[x]){x=substr(ci,ic,1);y=substr(ci,ic+1,1);z=substr(ci,ic+2,1);if(z "-"){r[x]-=r[y]}; else if(z "<"){r[x]=r[x]<r[y]}; else if(z "m"){r[y]=r[x]}; else if(z "$"){r[x]=system(r[y])}; else if(z "r"){r[x]=r[r[y]]}; else if(z "w"){r[r[y]] = r[x]}; else if(z "i"){getline r[x]}; else if(z "o"){printf "%s", r[x]}; else if(z "+"){r[x]=r[x] r[y]}; else if(z "c"){r[x] = sprintf("%c", r[y])}; else if(z "#"){r[x] = ord(r[y])}; else if(z "s"){r[x]=substr(r[x],r[y],1)};else if(z == "x"){ic=-2;ci=r[x]}; ic+=3};};' ci="$1";};[/code]

this allows you to change the syntax semmenatics and grammar of just about any shell language at will via reader macros. you can essentially write a macro that will allow you to rewrite the rules to the shell while it is running and invent your own notations. this runs on nearly any computer in the whole world