| // 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.analysis.util; |
| |
| import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment; |
| import com.google.devtools.build.lib.packages.Attribute; |
| import com.google.devtools.build.lib.packages.RuleClass; |
| |
| /** |
| * Interface for supporting arbitrary custom behavior in mock rule classes. |
| * |
| * <p>See {@link MockRule} for details and usage instructions. |
| */ |
| public interface MockRuleCustomBehavior { |
| |
| /** |
| * Adds custom behavior to a mock rule class. |
| * |
| * <p>It's not necessary to call {@link RuleClass.Builder#build} here. |
| */ |
| void customize(RuleClass.Builder builder, RuleDefinitionEnvironment env); |
| |
| /* Predefined no-op behavior. */ |
| MockRuleCustomBehavior NOOP = (builder, env) -> {}; |
| |
| /** |
| * Predefined behavior that populates a list of attributes. |
| */ |
| class CustomAttributes implements MockRuleCustomBehavior { |
| private final Iterable<Attribute.Builder<?>> attributes; |
| |
| CustomAttributes(Iterable<Attribute.Builder<?>> attributes) { |
| this.attributes = attributes; |
| } |
| |
| @Override |
| public void customize(RuleClass.Builder builder, RuleDefinitionEnvironment env) { |
| for (Attribute.Builder<?> attribute : attributes) { |
| builder.add(attribute); |
| } |
| } |
| } |
| } |