// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.checker;

import dev.cel.common.CelAbstractSyntaxTree;
import dev.cel.common.CelProtoAbstractSyntaxTree;

/**
 * CEL expression visitor implementation based on the {@link dev.cel.expr.Expr} proto.
 *
 * <p>Note: Prefer using {@link dev.cel.common.ast.CelExprVisitor} if protobuf support is not
 * needed.
 */
public abstract class CelProtoExprVisitor extends ExprVisitor {
  /** Visit the {@code ast} value, routing to overloads based on the kind of expression. */
  public void visit(CelAbstractSyntaxTree ast) {
    visit(CelProtoAbstractSyntaxTree.fromCelAst(ast).getExpr());
  }
}
