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- // Copyright 2020 Google Inc. 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 android
- import "github.com/google/blueprint"
- // Dependency tags can implement this interface and return true from InstallDepNeeded to annotate
- // that the installed files of the parent should depend on the installed files of the child.
- type InstallNeededDependencyTag interface {
- // If InstallDepNeeded returns true then the installed files of the parent will depend on the
- // installed files of the child.
- InstallDepNeeded() bool
- }
- // Dependency tags can embed this struct to annotate that the installed files of the parent should
- // depend on the installed files of the child.
- type InstallAlwaysNeededDependencyTag struct{}
- func (i InstallAlwaysNeededDependencyTag) InstallDepNeeded() bool {
- return true
- }
- var _ InstallNeededDependencyTag = InstallAlwaysNeededDependencyTag{}
- // IsInstallDepNeededTag returns true if the dependency tag implements the InstallNeededDependencyTag
- // interface and the InstallDepNeeded returns true, meaning that the installed files of the parent
- // should depend on the installed files of the child.
- func IsInstallDepNeededTag(tag blueprint.DependencyTag) bool {
- if i, ok := tag.(InstallNeededDependencyTag); ok {
- return i.InstallDepNeeded()
- }
- return false
- }
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