Difference.java

gehe zur Dokumentation dieser Datei

package de.lathanda.eos.baseparser;
 
import de.lathanda.eos.vm.Command;
import de.lathanda.eos.vm.commands.SubtractD;
import de.lathanda.eos.vm.commands.SubtractI;
 
import java.util.ArrayList;
 
public class Difference extends Expression {
 
    private final Expression left;
    private final Expression right;
 
    public Difference(Expression left, Expression right) {
        this.left = left;
        this.right = right;
        prio = 4;
    }
 
    @Override
    public void compile(ArrayList<Command> ops, boolean autoWindow) throws Exception {
        left.compile(ops, autoWindow);
        right.compile(ops, autoWindow);
        if (type.isInteger()) {
            ops.add(new SubtractI());
        } else {
            ops.add(new SubtractD());
        }
    }
 
    @Override
    public void resolveNamesAndTypes(Expression with, Environment env) {
        left.resolveNamesAndTypes(with, env);
        right.resolveNamesAndTypes(with, env);
        if (!left.getType().isNumber() || !right.getType().isNumber()) {
            env.addError(marker, "NumberType", left.getType(), right.getType());
        }
        type = left.getType().mergeTypes(right.getType());
    }
 
    @Override
    public String toString() {
        return "(" + left + "-" + right + ")";
    }
 
    @Override
    public String getLabel() {
        return createText("Difference.Label", getLabelLeft(left), getLabelRight(right));
    }
 
}