/* Decreases -- 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 decreases which is a special form of a contract statement.
 */
public class Decreases extends ContractStatement {
    private static final java.util.function.Predicate<ACSLNode> VALIDATOR = 
			ACSLNode.VALIDATORS.get(Decreases.class);
    /**
     * The formula of this decreases.
     */
    Expression formula;

    /**
     * The identifier of this decreases.
     */
    String identifier;

    /**
     * The constructor taking initial values.
     * @param formula the formula of this decreases.
     */
    public Decreases(Expression formula) {
        super();
        this.formula = formula;
        assert VALIDATOR == null || VALIDATOR.test(this) : "Invalid Decreases: " + this;
    }

    /**
     * The constructor taking initial values.
     * @param formula the formula of this decreases.
     * @param identifier the identifier of this decreases.
     */
    public Decreases(Expression formula, String identifier) {
        super();
        this.formula = formula;
        this.identifier = identifier;
        assert VALIDATOR == null || VALIDATOR.test(this) : "Invalid Decreases: " + this;
    }

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

    /**
     * Gets the formula of this decreases.
     * @return the formula of this decreases.
     */
    public Expression getFormula() {
        return formula;
    }

    /**
     * Gets the identifier of this decreases.
     * @return the identifier of this decreases.
     */
    public String getIdentifier() {
        return identifier;
    }

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

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

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

            Expression newformula = null;
        if(formula != null){
            newformula = (Expression)formula.accept(visitor);
        }
        if(formula != newformula){
            return new Decreases(newformula, identifier);
        }
        return this;
    }
}