| // Copyright 2017 The Bazel Authors. All rights reserved. |
| // |
| // 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 |
| // |
| // http://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 com.google.devtools.build.lib.query2.engine; |
| |
| /** Provides interfaces to visit all {@link QueryExpression}s with a context object. */ |
| public interface QueryExpressionVisitor<T, C> { |
| T visit(TargetLiteral targetLiteral, C context); |
| |
| T visit(BinaryOperatorExpression binaryOperatorExpression, C context); |
| |
| T visit(FunctionExpression functionExpression, C context); |
| |
| T visit(LetExpression letExpression, C context); |
| |
| T visit(SetExpression setExpression, C context); |
| } |