/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.painless.node;

import org.elasticsearch.painless.Location;
import org.elasticsearch.painless.phase.UserTreeVisitor;

import java.util.Objects;

/**
 * Represents a single variable declaration.
 */
public class SDeclaration extends AStatement {

    private final String canonicalTypeName;
    private final String symbol;
    private final AExpression valueNode;

    public SDeclaration(int identifier, Location location, String canonicalTypeName, String symbol, AExpression valueNode) {
        super(identifier, location);

        this.canonicalTypeName = Objects.requireNonNull(canonicalTypeName);
        this.symbol = Objects.requireNonNull(symbol);
        this.valueNode = valueNode;
    }

    public String getCanonicalTypeName() {
        return canonicalTypeName;
    }

    public String getSymbol() {
        return symbol;
    }

    public AExpression getValueNode() {
        return valueNode;
    }

    @Override
    public <Scope> void visit(UserTreeVisitor<Scope> userTreeVisitor, Scope scope) {
        userTreeVisitor.visitDeclaration(this, scope);
    }

    @Override
    public <Scope> void visitChildren(UserTreeVisitor<Scope> userTreeVisitor, Scope scope) {
        if (valueNode != null) {
            valueNode.visit(userTreeVisitor, scope);
        }
    }
}