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Convert trivial TopDown mutators to BottomUp

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Many TopDown mutators can be easily converted to BottomUp mutators,
which are easier to handle for incremental and partial analysis.

Bug: 367784740
Test: all soong tests pass
Test: no change to build.ninja
Flag: EXEMPT refactor
Change-Id: I82955e844ed0eb6680854678c0744ac5398eb7ba
This commit is contained in:
Colin Cross
2024-09-17 14:25:45 -07:00
parent 167230037c
commit da279cfba4
9 changed files with 61 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
android/defaults.go
View File

@@ -69,7 +69,7 @@ type Defaultable interface {
// Apply defaults from the supplied Defaults to the property structures supplied to
// setProperties(...).
applyDefaults(TopDownMutatorContext, []Defaults)
applyDefaults(BottomUpMutatorContext, []Defaults)
// Set the hook to be called after any defaults have been applied.
//
@@ -209,7 +209,7 @@ func InitDefaultsModule(module DefaultsModule) {
var _ Defaults = (*DefaultsModuleBase)(nil)
func (defaultable *DefaultableModuleBase) applyDefaults(ctx TopDownMutatorContext,
func (defaultable *DefaultableModuleBase) applyDefaults(ctx BottomUpMutatorContext,
defaultsList []Defaults) {
for _, defaults := range defaultsList {
@@ -226,7 +226,7 @@ func (defaultable *DefaultableModuleBase) applyDefaults(ctx TopDownMutatorContex
// Product variable properties need special handling, the type of the filtered product variable
// property struct may not be identical between the defaults module and the defaultable module.
// Use PrependMatchingProperties to apply whichever properties match.
func (defaultable *DefaultableModuleBase) applyDefaultVariableProperties(ctx TopDownMutatorContext,
func (defaultable *DefaultableModuleBase) applyDefaultVariableProperties(ctx BottomUpMutatorContext,
defaults Defaults, defaultableProp interface{}) {
if defaultableProp == nil {
return
@@ -254,7 +254,7 @@ func (defaultable *DefaultableModuleBase) applyDefaultVariableProperties(ctx Top
}
}
func (defaultable *DefaultableModuleBase) applyDefaultProperties(ctx TopDownMutatorContext,
func (defaultable *DefaultableModuleBase) applyDefaultProperties(ctx BottomUpMutatorContext,
defaults Defaults, defaultableProp interface{}) {
for _, def := range defaults.properties() {
@@ -273,7 +273,7 @@ func (defaultable *DefaultableModuleBase) applyDefaultProperties(ctx TopDownMuta
func RegisterDefaultsPreArchMutators(ctx RegisterMutatorsContext) {
ctx.BottomUp("defaults_deps", defaultsDepsMutator).Parallel()
ctx.TopDown("defaults", defaultsMutator).Parallel()
ctx.BottomUp("defaults", defaultsMutator).Parallel()
}
func defaultsDepsMutator(ctx BottomUpMutatorContext) {
@@ -282,8 +282,12 @@ func defaultsDepsMutator(ctx BottomUpMutatorContext) {
}
}
func defaultsMutator(ctx TopDownMutatorContext) {
func defaultsMutator(ctx BottomUpMutatorContext) {
if defaultable, ok := ctx.Module().(Defaultable); ok {
if _, isDefaultsModule := ctx.Module().(Defaults); isDefaultsModule {
// Don't squash transitive defaults into defaults modules
return
}
defaults := defaultable.defaults().Defaults
if len(defaults) > 0 {
var defaultsList []Defaults

16
android/mutator.go
View File

@@ -193,16 +193,16 @@ type BaseMutatorContext interface {
// Rename all variants of a module. The new name is not visible to calls to ModuleName,
// AddDependency or OtherModuleName until after this mutator pass is complete.
Rename(name string)
// CreateModule creates a new module by calling the factory method for the specified moduleType, and applies
// the specified property structs to it as if the properties were set in a blueprint file.
CreateModule(ModuleFactory, ...interface{}) Module
}
type TopDownMutator func(TopDownMutatorContext)
type TopDownMutatorContext interface {
BaseMutatorContext
// CreateModule creates a new module by calling the factory method for the specified moduleType, and applies
// the specified property structs to it as if the properties were set in a blueprint file.
CreateModule(ModuleFactory, ...interface{}) Module
}
type topDownMutatorContext struct {
@@ -739,6 +739,14 @@ func (b *bottomUpMutatorContext) Rename(name string) {
b.Module().base().commonProperties.DebugName = name
}
func (b *bottomUpMutatorContext) createModule(factory blueprint.ModuleFactory, name string, props ...interface{}) blueprint.Module {
return b.bp.CreateModule(factory, name, props...)
}
func (b *bottomUpMutatorContext) CreateModule(factory ModuleFactory, props ...interface{}) Module {
return createModule(b, factory, "_bottomUpMutatorModule", props...)
}
func (b *bottomUpMutatorContext) AddDependency(module blueprint.Module, tag blueprint.DependencyTag, name ...string) []blueprint.Module {
if b.baseModuleContext.checkedMissingDeps() {
panic("Adding deps not allowed after checking for missing deps")

4
android/visibility.go
View File

@@ -283,7 +283,7 @@ func RegisterVisibilityRuleGatherer(ctx RegisterMutatorsContext) {
// This must be registered after the deps have been resolved.
func RegisterVisibilityRuleEnforcer(ctx RegisterMutatorsContext) {
ctx.TopDown("visibilityRuleEnforcer", visibilityRuleEnforcer).Parallel()
ctx.BottomUp("visibilityRuleEnforcer", visibilityRuleEnforcer).Parallel()
}
// Checks the per-module visibility rule lists before defaults expansion.
@@ -507,7 +507,7 @@ func splitRule(ctx BaseModuleContext, ruleExpression string, currentPkg, propert
return true, pkg, name
}
func visibilityRuleEnforcer(ctx TopDownMutatorContext) {
func visibilityRuleEnforcer(ctx BottomUpMutatorContext) {
qualified := createVisibilityModuleReference(ctx.ModuleName(), ctx.ModuleDir(), ctx.Module())
// Visit all the dependencies making sure that this module has access to them all.