@Override
public ArrayList<Instruction> generate() {
ArrayList<Instruction> instructions = new ArrayList<>();
instructions.addAll(r.generate());
Instruction.Op op = null;
switch (r.relOpToken.getLexeme()) {
case ("=="):
op = Instruction.Op.beq;
break;
case ("!="):
op = Instruction.Op.bne;
break;
case ("<"):
op = Instruction.Op.blt;
break;
case ("<="):
op = Instruction.Op.ble;
break;
case (">"):
op = Instruction.Op.bgt;
break;
case (">="):
op = Instruction.Op.bge;
break;
default:
break;
}
ArrayList<Instruction> thenBlock = tthen.generate();
ArrayList<Instruction> elseBlock = new ArrayList<>();
Instruction endTarget = new Instruction(Instruction.Op.noop, null, null);
if (eelse != null) {
elseBlock.addAll(eelse.generate());
}
elseBlock.add(new Instruction(Instruction.Op.bra, new Result(endTarget), null));
instructions.add(
new Instruction(
op,
new Result(instructions.get(instructions.size() - 1)),
new Result(thenBlock.get(0))));
instructions.addAll(elseBlock);
instructions.addAll(thenBlock);
instructions.add(endTarget);
return instructions;
}
