c99deeb961
Blueprint now requres DependencyTags to be passed to AddDependency calls. Use the tags to avoid setting member variables on modules, which will be lost after the mutators have been called. Change-Id: I8c1d9ed1db85a300e14394b911a516d361ba9f75
134 lines
3.4 KiB
Go
134 lines
3.4 KiB
Go
// Copyright 2015 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package common
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import (
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"github.com/google/blueprint"
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"github.com/google/blueprint/proptools"
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)
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type defaultsDependencyTag struct {
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blueprint.BaseDependencyTag
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}
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var DefaultsDepTag defaultsDependencyTag
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type defaultsProperties struct {
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Defaults []string
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}
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type DefaultableModule struct {
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defaultsProperties defaultsProperties
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defaultableProperties []interface{}
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}
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func (d *DefaultableModule) defaults() *defaultsProperties {
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return &d.defaultsProperties
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}
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func (d *DefaultableModule) setProperties(props []interface{}) {
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d.defaultableProperties = props
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}
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type Defaultable interface {
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defaults() *defaultsProperties
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setProperties([]interface{})
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applyDefaults(AndroidTopDownMutatorContext, Defaults)
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}
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var _ Defaultable = (*DefaultableModule)(nil)
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func InitDefaultableModule(module AndroidModule, d Defaultable,
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props ...interface{}) (blueprint.Module, []interface{}) {
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d.setProperties(props)
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props = append(props, d.defaults())
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return module, props
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}
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type DefaultsModule struct {
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defaultProperties []interface{}
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}
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type Defaults interface {
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isDefaults() bool
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setProperties([]interface{})
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properties() []interface{}
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}
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func (d *DefaultsModule) isDefaults() bool {
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return true
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}
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func (d *DefaultsModule) properties() []interface{} {
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return d.defaultProperties
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}
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func (d *DefaultsModule) setProperties(props []interface{}) {
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d.defaultProperties = props
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}
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func InitDefaultsModule(module AndroidModule, d Defaults, props ...interface{}) (blueprint.Module, []interface{}) {
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d.setProperties(props)
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return module, props
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}
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var _ Defaults = (*DefaultsModule)(nil)
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func (defaultable *DefaultableModule) applyDefaults(ctx AndroidTopDownMutatorContext,
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defaults Defaults) {
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for _, prop := range defaultable.defaultableProperties {
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for _, def := range defaults.properties() {
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if proptools.TypeEqual(prop, def) {
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err := proptools.PrependProperties(prop, def, nil)
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if err != nil {
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if propertyErr, ok := err.(*proptools.ExtendPropertyError); ok {
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ctx.PropertyErrorf(propertyErr.Property, "%s", propertyErr.Err.Error())
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} else {
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panic(err)
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}
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}
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}
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}
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}
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}
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func defaultsDepsMutator(ctx AndroidBottomUpMutatorContext) {
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if defaultable, ok := ctx.Module().(Defaultable); ok {
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ctx.AddDependency(ctx.Module(), DefaultsDepTag, defaultable.defaults().Defaults...)
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}
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}
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func defaultsMutator(ctx AndroidTopDownMutatorContext) {
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if defaultable, ok := ctx.Module().(Defaultable); ok {
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for _, defaultsDep := range defaultable.defaults().Defaults {
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ctx.VisitDirectDeps(func(m blueprint.Module) {
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if ctx.OtherModuleName(m) == defaultsDep {
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if defaultsModule, ok := m.(Defaults); ok {
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defaultable.applyDefaults(ctx, defaultsModule)
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} else {
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ctx.PropertyErrorf("defaults", "module %s is not an defaults module",
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ctx.OtherModuleName(m))
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}
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}
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})
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}
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}
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}
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