void insPrint(Inst inst)
{
switch (inst.type) {
case INST_ASSIGN:
printf(" (assign ");
regPrint(inst.u.assign.target);
printf(" ");
srcPrint(inst.u.assign.source);
printf(")\n");
break;
case INST_PERFORM:
printf(" (perform ");
opPrint(inst.u.oper.op);
printf(")\n");
break;
case INST_TEST:
printf(" (test ");
opPrint(inst.u.oper.op);
printf(")\n");
break;
case INST_LABEL:
lblPrint(inst.u.label.lbl);
printf("\n");
break;
case INST_BRANCH:
printf(" (branch ");
trgPrint(inst.u.jump.target);
printf(")\n");
break;
case INST_GOTO:
printf(" (goto ");
trgPrint(inst.u.jump.target);
printf(")\n");
break;
case INST_SAVE:
printf(" (save ");
regPrint(inst.u.stackOp.reg);
printf(")\n");
break;
case INST_RESTORE:
printf(" (restore ");
regPrint(inst.u.stackOp.reg);
printf(")\n");
break;
default:
printf("Unknown instruction type\n");
break;
}
}
int main()
{
printf("This program performs some basic operations with polynomials.\n"
"Type help (or h) for more information\n");
Polynomial space['z' - 'a' + 1];
char command[20];
for (;;)
{
printf("> ");
scanf("%s", command);
switch (command[0])
{
case 'a':
opAdd(space);
break;
case 'p':
opPrint(space);
break;
case 'r':
opRemove(space);
break;
case 'e':
opIsEqual(space);
break;
case 's':
opSumm(space);
break;
case 'v':
opValue(space);
break;
case 'h':
opHelp();
break;
case 'q':
return 0;
}
}
}
void srcPrint(Source src)
{
switch (src.type) {
case SRC_REG:
printf("(reg ");
regPrint(src.u.reg);
printf(")");
break;
case SRC_CONST:
conPrint(src.u.con);
break;
case SRC_OP:
opPrint(src.u.op);
break;
case SRC_LABEL:
printf("(label ");
lblPrint(src.u.lbl);
printf(")");
break;
default:
printf("Unknown source type\n");
break;
}
}
