WhileDo.java

gehe zur Dokumentation dieser Datei

package de.lathanda.eos.baseparser;
 
import de.lathanda.eos.vm.Command;
import de.lathanda.eos.vm.DebugPoint;
import de.lathanda.eos.vm.commands.Jump;
import de.lathanda.eos.vm.commands.JumpIf;
 
import java.util.ArrayList;
 
public class WhileDo extends Loop {
    public WhileDo(Expression condition, Sequence sequence) {
        super(sequence, condition);
    }
 
    @Override
    public void compile(ArrayList<Command> ops, boolean autoWindow) throws Exception {
        ArrayList<Command> cond = new ArrayList<>();
        ArrayList<Command> body = new ArrayList<>();
        cond.add(new DebugPoint(condition.getMarker()));
        condition.compile(cond, autoWindow);
        sequence.compile(body, autoWindow);
        ops.add(new Jump(body.size() + 1));
        ops.addAll(body);
        ops.addAll(cond);
        ops.add(new JumpIf(-(cond.size() + body.size())));
    }
 
    @Override
    public void resolveNamesAndTypes(Expression with, Environment env) {
        sequence.resolveNamesAndTypes(with, env);
        condition.resolveNamesAndTypes(with, env);
        if (!condition.getType().isBoolean()) {
            env.addError(marker, "ConditionType", condition.getType());
        }
    }
 
    @Override
    public String toString() {
        return "do\n" + sequence + "while " + condition;
    }
 
    @Override
    public String getLabel() {
        return createText("DoWhile.Label", condition.getLabel());
    }
 
    @Override
    public boolean isPre() {
        return true;
    }
}