/* AtLabelExpression -- Automatically generated by TreeBuilder (2024-10-27T16:47Z) */

package de.uni_freiburg.informatik.ultimate.model.acsl.ast;

import java.util.List;
import de.uni_freiburg.informatik.ultimate.model.acsl.ACSLNode;
/**
 * Represents a at label expression which is a special form of a expression.
 */
public class AtLabelExpression extends Expression {
    private static final java.util.function.Predicate<ACSLNode> VALIDATOR = 
			ACSLNode.VALIDATORS.get(AtLabelExpression.class);
    /**
     * refers to the value at a certain position, determined
     * by the given label.
     */
    Expression formula;

    /**
     * The label of this at label expression.
     */
    String label;

    /**
     * The constructor taking initial values.
     * @param formula refers to the value at a certain position, determined
     * by the given label.
     * @param label the label of this at label expression.
     */
    public AtLabelExpression(Expression formula, String label) {
        super();
        this.formula = formula;
        this.label = label;
        assert VALIDATOR == null || VALIDATOR.test(this) : "Invalid AtLabelExpression: " + this;
    }

    /**
     * The constructor taking initial values.
     * @param type the type of this expression.
     * @param formula refers to the value at a certain position, determined
     * by the given label.
     * @param label the label of this at label expression.
     */
    public AtLabelExpression(ACSLType type, Expression formula, String label) {
        super(type);
        this.formula = formula;
        this.label = label;
        assert VALIDATOR == null || VALIDATOR.test(this) : "Invalid AtLabelExpression: " + this;
    }

    /**
     * Returns a textual description of this object.
     */
    public String toString() {
        StringBuffer sb = new StringBuffer();
        sb.append("AtLabelExpression").append('[');
        sb.append(formula);
        sb.append(',').append(label);
        return sb.append(']').toString();
    }

    /**
     * Gets refers to the value at a certain position, determined
     * by the given label.
     * @return refers to the value at a certain position, determined
     * by the given label.
     */
    public Expression getFormula() {
        return formula;
    }

    /**
     * Gets the label of this at label expression.
     * @return the label of this at label expression.
     */
    public String getLabel() {
        return label;
    }

    public List<ACSLNode> getOutgoingNodes() {
        List<ACSLNode> children = super.getOutgoingNodes();
        children.add(formula);
        return children;
    }

    public void accept(ACSLVisitor visitor) {
        if (visitor.visit((Expression)this)) {
            //visit parent types higher up if necessary
        } else {
            return;
        }
        if (visitor.visit(this)) {
            if(formula!=null){
                formula.accept(visitor);
            }
            if(type!=null){
                type.accept(visitor);
            }
        }
    }

    public Expression accept(ACSLTransformer visitor) {
        Expression node = visitor.transform(this);
        if(node != this){
            return node;
        }

            Expression newformula = null;
        if(formula != null){
            newformula = (Expression)formula.accept(visitor);
        }
            ACSLType newtype = null;
        if(type != null){
            newtype = (ACSLType)type.accept(visitor);
        }
        if(formula != newformula || type != newtype){
            return new AtLabelExpression(newtype, newformula, label);
        }
        return this;
    }
}