@Override
public MLExpression expr() {
if (simpE) {
return new AdditionMLExpression(e.expr(), e2.expr());
} else {
return new PersonMLExpression(Memory.REG1);
}
}
@Override
public String getWS() {
int elsep = Helper.nextMark();
int ende = Helper.nextMark();
return e1.getWS() + e2.getWS() + Helper.subtract()
+ Helper.jumpz(elsep)
+ Helper.push(1)
+ Helper.jump(ende)
+ Helper.setMark(elsep)
+ Helper.push(0)
+ Helper.setMark(ende);
}
@Override
public List<MLCommand> getML() {
if (!simpE) {
List<MLCommand> res = new ArrayList<>();
if (!e.simpleExpression()) {
res.addAll(e.getML());
}
res.add(new StackPushML(Memory.Stack, e.expr()));
if (!e2.simpleExpression()) {
res.addAll(e2.getML());
}
res.add(new StackPushML(Memory.Stack, e2.expr()));
res.add(new StackPopML(Memory.Stack));
res.add(new PersonAsignmentML(Memory.REG1, new PersonMLExpression(Memory.Stack)));
res.add(new StackPopML(Memory.Stack));
res.add(
new PersonAsignmentML(
Memory.REG1,
new AdditionMLExpression(
new PersonMLExpression(Memory.REG1), new PersonMLExpression(Memory.Stack))));
return res;
}
return null;
}
public AdditionExpressionEquiv(AdditionExpression additionExpression) {
e = ExpressionEquiv.getEquiv(additionExpression.getE1());
e2 = ExpressionEquiv.getEquiv(additionExpression.getE2());
simpE = e.simpleExpression() && e2.simpleExpression();
}
