Reapply "Make the enabled property configurable"

Previously, I had changed some loadhook-appended property structs
to use selects instead of the "target" property struct. This seems
to not be exactly equivalent because "target" properties are merged
with the regular properties later, at the time the arch mutator runs.

With this reapplication, leave those target property structs alone
to avoid breakages, but I'll have to look into what the issue is
with them later.

This reverts commit ed5276f0827915166e89b72bf26f7e65f68d2dd5.

Ignore-AOSP-First: This cl needs to be in a topic with internal-only projects, will cherrypick to aosp after.
Bug: 323382414
Test: m nothing --no-skip-soong-tests
Change-Id: If355d24506e3f117d27b21442a6c02bca3402dc7
diff --git a/android/Android.bp b/android/Android.bp
index f130d3a..fa78e15 100644
--- a/android/Android.bp
+++ b/android/Android.bp
@@ -41,6 +41,7 @@
         "buildinfo_prop.go",
         "config.go",
         "test_config.go",
+        "configurable_properties.go",
         "configured_jars.go",
         "csuite_config.go",
         "deapexer.go",
diff --git a/android/androidmk.go b/android/androidmk.go
index 07f7c58..0a366e1 100644
--- a/android/androidmk.go
+++ b/android/androidmk.go
@@ -849,7 +849,7 @@
 	mod blueprint.Module, provider AndroidMkDataProvider) error {
 
 	amod := mod.(Module).base()
-	if shouldSkipAndroidMkProcessing(amod) {
+	if shouldSkipAndroidMkProcessing(ctx, amod) {
 		return nil
 	}
 
@@ -939,7 +939,7 @@
 
 func translateAndroidMkEntriesModule(ctx SingletonContext, w io.Writer, moduleInfoJSONs *[]*ModuleInfoJSON,
 	mod blueprint.Module, provider AndroidMkEntriesProvider) error {
-	if shouldSkipAndroidMkProcessing(mod.(Module).base()) {
+	if shouldSkipAndroidMkProcessing(ctx, mod.(Module).base()) {
 		return nil
 	}
 
@@ -961,11 +961,11 @@
 	return nil
 }
 
-func ShouldSkipAndroidMkProcessing(module Module) bool {
-	return shouldSkipAndroidMkProcessing(module.base())
+func ShouldSkipAndroidMkProcessing(ctx ConfigAndErrorContext, module Module) bool {
+	return shouldSkipAndroidMkProcessing(ctx, module.base())
 }
 
-func shouldSkipAndroidMkProcessing(module *ModuleBase) bool {
+func shouldSkipAndroidMkProcessing(ctx ConfigAndErrorContext, module *ModuleBase) bool {
 	if !module.commonProperties.NamespaceExportedToMake {
 		// TODO(jeffrygaston) do we want to validate that there are no modules being
 		// exported to Kati that depend on this module?
@@ -984,7 +984,7 @@
 		return true
 	}
 
-	return !module.Enabled() ||
+	return !module.Enabled(ctx) ||
 		module.commonProperties.HideFromMake ||
 		// Make does not understand LinuxBionic
 		module.Os() == LinuxBionic ||
diff --git a/android/arch.go b/android/arch.go
index cd8882b..e0c6908 100644
--- a/android/arch.go
+++ b/android/arch.go
@@ -486,7 +486,7 @@
 			// dependencies on OsType variants that are explicitly disabled in their
 			// properties. The CommonOS variant will still depend on disabled variants
 			// if they are disabled afterwards, e.g. in archMutator if
-			if module.Enabled() {
+			if module.Enabled(mctx) {
 				mctx.AddInterVariantDependency(commonOsToOsSpecificVariantTag, commonOSVariant, module)
 			}
 		}
@@ -511,7 +511,7 @@
 	var variants []Module
 	mctx.VisitDirectDeps(func(m Module) {
 		if mctx.OtherModuleDependencyTag(m) == commonOsToOsSpecificVariantTag {
-			if m.Enabled() {
+			if m.Enabled(mctx) {
 				variants = append(variants, m)
 			}
 		}
diff --git a/android/arch_test.go b/android/arch_test.go
index 5021a67..f0a58a9 100644
--- a/android/arch_test.go
+++ b/android/arch_test.go
@@ -423,7 +423,7 @@
 		variants := ctx.ModuleVariantsForTests(name)
 		for _, variant := range variants {
 			m := ctx.ModuleForTests(name, variant)
-			if m.Module().Enabled() {
+			if m.Module().Enabled(PanickingConfigAndErrorContext(ctx)) {
 				ret = append(ret, variant)
 			}
 		}
@@ -533,7 +533,7 @@
 		variants := ctx.ModuleVariantsForTests(name)
 		for _, variant := range variants {
 			m := ctx.ModuleForTests(name, variant)
-			if m.Module().Enabled() {
+			if m.Module().Enabled(PanickingConfigAndErrorContext(ctx)) {
 				ret = append(ret, variant)
 			}
 		}
diff --git a/android/base_module_context.go b/android/base_module_context.go
index c5fe585..2963520 100644
--- a/android/base_module_context.go
+++ b/android/base_module_context.go
@@ -325,7 +325,7 @@
 		return nil
 	}
 
-	if !aModule.Enabled() {
+	if !aModule.Enabled(b) {
 		if t, ok := tag.(AllowDisabledModuleDependency); !ok || !t.AllowDisabledModuleDependency(aModule) {
 			if b.Config().AllowMissingDependencies() {
 				b.AddMissingDependencies([]string{b.OtherModuleName(aModule)})
diff --git a/android/configurable_properties.go b/android/configurable_properties.go
new file mode 100644
index 0000000..dad42fa
--- /dev/null
+++ b/android/configurable_properties.go
@@ -0,0 +1,28 @@
+package android
+
+import "github.com/google/blueprint/proptools"
+
+// CreateSelectOsToBool is a utility function that makes it easy to create a
+// Configurable property value that maps from os to a bool. Use an empty string
+// to indicate a "default" case.
+func CreateSelectOsToBool(cases map[string]*bool) proptools.Configurable[bool] {
+	var resultCases []proptools.ConfigurableCase[bool]
+	for pattern, value := range cases {
+		if pattern == "" {
+			resultCases = append(resultCases, proptools.NewConfigurableCase(
+				[]proptools.ConfigurablePattern{proptools.NewDefaultConfigurablePattern()},
+				value,
+			))
+		} else {
+			resultCases = append(resultCases, proptools.NewConfigurableCase(
+				[]proptools.ConfigurablePattern{proptools.NewStringConfigurablePattern(pattern)},
+				value,
+			))
+		}
+	}
+
+	return proptools.NewConfigurable(
+		[]proptools.ConfigurableCondition{proptools.NewConfigurableCondition("os", nil)},
+		resultCases,
+	)
+}
diff --git a/android/early_module_context.go b/android/early_module_context.go
index cf1b5fc..23f4c90 100644
--- a/android/early_module_context.go
+++ b/android/early_module_context.go
@@ -173,5 +173,5 @@
 }
 
 func (e *earlyModuleContext) OtherModulePropertyErrorf(module Module, property string, fmt string, args ...interface{}) {
-	e.EarlyModuleContext.OtherModulePropertyErrorf(module, property, fmt, args)
+	e.EarlyModuleContext.OtherModulePropertyErrorf(module, property, fmt, args...)
 }
diff --git a/android/gen_notice.go b/android/gen_notice.go
index 1acc638..6815f64 100644
--- a/android/gen_notice.go
+++ b/android/gen_notice.go
@@ -62,7 +62,7 @@
 				if mod == nil {
 					continue
 				}
-				if !mod.Enabled() { // don't depend on variants without build rules
+				if !mod.Enabled(ctx) { // don't depend on variants without build rules
 					continue
 				}
 				modules = append(modules, mod)
diff --git a/android/license_metadata.go b/android/license_metadata.go
index eabb1b1..d515cdd 100644
--- a/android/license_metadata.go
+++ b/android/license_metadata.go
@@ -36,7 +36,7 @@
 func buildLicenseMetadata(ctx ModuleContext, licenseMetadataFile WritablePath) {
 	base := ctx.Module().base()
 
-	if !base.Enabled() {
+	if !base.Enabled(ctx) {
 		return
 	}
 
@@ -69,7 +69,7 @@
 		if dep == nil {
 			return
 		}
-		if !dep.Enabled() {
+		if !dep.Enabled(ctx) {
 			return
 		}
 
diff --git a/android/makevars.go b/android/makevars.go
index 4039e7e..e73645f 100644
--- a/android/makevars.go
+++ b/android/makevars.go
@@ -98,6 +98,7 @@
 	BlueprintFile(module blueprint.Module) string
 
 	ModuleErrorf(module blueprint.Module, format string, args ...interface{})
+	OtherModulePropertyErrorf(module Module, property, format string, args ...interface{})
 	Errorf(format string, args ...interface{})
 
 	VisitAllModules(visit func(Module))
@@ -265,7 +266,7 @@
 	}
 
 	ctx.VisitAllModules(func(m Module) {
-		if provider, ok := m.(ModuleMakeVarsProvider); ok && m.Enabled() {
+		if provider, ok := m.(ModuleMakeVarsProvider); ok && m.Enabled(ctx) {
 			mctx := &makeVarsContext{
 				SingletonContext: ctx,
 			}
diff --git a/android/module.go b/android/module.go
index effca03..5d69ba1 100644
--- a/android/module.go
+++ b/android/module.go
@@ -60,7 +60,7 @@
 
 	base() *ModuleBase
 	Disable()
-	Enabled() bool
+	Enabled(ctx ConfigAndErrorContext) bool
 	Target() Target
 	MultiTargets() []Target
 
@@ -287,7 +287,7 @@
 	// but are not usually required (e.g. superceded by a prebuilt) should not be
 	// disabled as that will prevent them from being built by the checkbuild target
 	// and so prevent early detection of changes that have broken those modules.
-	Enabled *bool `android:"arch_variant"`
+	Enabled proptools.Configurable[bool] `android:"arch_variant,replace_instead_of_append"`
 
 	// Controls the visibility of this module to other modules. Allowable values are one or more of
 	// these formats:
@@ -1392,14 +1392,11 @@
 	return partition
 }
 
-func (m *ModuleBase) Enabled() bool {
+func (m *ModuleBase) Enabled(ctx ConfigAndErrorContext) bool {
 	if m.commonProperties.ForcedDisabled {
 		return false
 	}
-	if m.commonProperties.Enabled == nil {
-		return !m.Os().DefaultDisabled
-	}
-	return *m.commonProperties.Enabled
+	return m.commonProperties.Enabled.GetOrDefault(m.ConfigurableEvaluator(ctx), !m.Os().DefaultDisabled)
 }
 
 func (m *ModuleBase) Disable() {
@@ -1643,7 +1640,7 @@
 		// not be created if the module is not exported to make.
 		// Those could depend on the build target and fail to compile
 		// for the current build target.
-		if !ctx.Config().KatiEnabled() || !shouldSkipAndroidMkProcessing(a) {
+		if !ctx.Config().KatiEnabled() || !shouldSkipAndroidMkProcessing(ctx, a) {
 			allCheckbuildFiles = append(allCheckbuildFiles, a.checkbuildFiles...)
 		}
 	})
@@ -1835,7 +1832,7 @@
 		checkDistProperties(ctx, fmt.Sprintf("dists[%d]", i), &m.distProperties.Dists[i])
 	}
 
-	if m.Enabled() {
+	if m.Enabled(ctx) {
 		// ensure all direct android.Module deps are enabled
 		ctx.VisitDirectDepsBlueprint(func(bm blueprint.Module) {
 			if m, ok := bm.(Module); ok {
@@ -2136,7 +2133,7 @@
 }
 
 func (e configurationEvalutor) PropertyErrorf(property string, fmt string, args ...interface{}) {
-	e.ctx.OtherModulePropertyErrorf(e.m, property, fmt, args)
+	e.ctx.OtherModulePropertyErrorf(e.m, property, fmt, args...)
 }
 
 func (e configurationEvalutor) EvaluateConfiguration(condition proptools.ConfigurableCondition, property string) proptools.ConfigurableValue {
@@ -2535,7 +2532,7 @@
 	}
 	osDeps := map[osAndCross]Paths{}
 	ctx.VisitAllModules(func(module Module) {
-		if module.Enabled() {
+		if module.Enabled(ctx) {
 			key := osAndCross{os: module.Target().Os, hostCross: module.Target().HostCross}
 			osDeps[key] = append(osDeps[key], module.base().checkbuildFiles...)
 		}
diff --git a/android/mutator.go b/android/mutator.go
index 75ba650..5abb05d 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -674,13 +674,11 @@
 // on component modules to be added so that they can depend directly on a prebuilt
 // module.
 func componentDepsMutator(ctx BottomUpMutatorContext) {
-	if m := ctx.Module(); m.Enabled() {
-		m.ComponentDepsMutator(ctx)
-	}
+	ctx.Module().ComponentDepsMutator(ctx)
 }
 
 func depsMutator(ctx BottomUpMutatorContext) {
-	if m := ctx.Module(); m.Enabled() {
+	if m := ctx.Module(); m.Enabled(ctx) {
 		m.base().baseDepsMutator(ctx)
 		m.DepsMutator(ctx)
 	}
diff --git a/android/override_module.go b/android/override_module.go
index 1341f53..21cf381 100644
--- a/android/override_module.go
+++ b/android/override_module.go
@@ -322,7 +322,7 @@
 }
 
 func overridableModuleDepsMutator(ctx BottomUpMutatorContext) {
-	if b, ok := ctx.Module().(OverridableModule); ok && b.Enabled() {
+	if b, ok := ctx.Module().(OverridableModule); ok && b.Enabled(ctx) {
 		b.OverridablePropertiesDepsMutator(ctx)
 	}
 }
diff --git a/android/paths.go b/android/paths.go
index 39b660c..8d92aa4 100644
--- a/android/paths.go
+++ b/android/paths.go
@@ -60,6 +60,7 @@
 
 	ModuleDir() string
 	ModuleErrorf(fmt string, args ...interface{})
+	OtherModulePropertyErrorf(module Module, property, fmt string, args ...interface{})
 }
 
 var _ EarlyModulePathContext = ModuleContext(nil)
@@ -561,7 +562,7 @@
 	if module == nil {
 		return nil, missingDependencyError{[]string{moduleName}}
 	}
-	if aModule, ok := module.(Module); ok && !aModule.Enabled() {
+	if aModule, ok := module.(Module); ok && !aModule.Enabled(ctx) {
 		return nil, missingDependencyError{[]string{moduleName}}
 	}
 	if outProducer, ok := module.(OutputFileProducer); ok {
diff --git a/android/prebuilt.go b/android/prebuilt.go
index 2b7b55b..1f9b331 100644
--- a/android/prebuilt.go
+++ b/android/prebuilt.go
@@ -275,7 +275,7 @@
 	srcPropertyName := proptools.PropertyNameForField(srcField)
 
 	srcsSupplier := func(ctx BaseModuleContext, _ Module) []string {
-		if !module.Enabled() {
+		if !module.Enabled(ctx) {
 			return nil
 		}
 		value := srcPropsValue.FieldByIndex(srcFieldIndex)
@@ -425,7 +425,7 @@
 	m := ctx.Module()
 	// If this module is a prebuilt, is enabled and has not been renamed to source then add a
 	// dependency onto the source if it is present.
-	if p := GetEmbeddedPrebuilt(m); p != nil && m.Enabled() && !p.properties.PrebuiltRenamedToSource {
+	if p := GetEmbeddedPrebuilt(m); p != nil && m.Enabled(ctx) && !p.properties.PrebuiltRenamedToSource {
 		bmn, _ := m.(baseModuleName)
 		name := bmn.BaseModuleName()
 		if ctx.OtherModuleReverseDependencyVariantExists(name) {
@@ -702,7 +702,7 @@
 	}
 
 	// If source is not available or is disabled then always use the prebuilt.
-	if source == nil || !source.Enabled() {
+	if source == nil || !source.Enabled(ctx) {
 		return true
 	}
 
diff --git a/android/prebuilt_test.go b/android/prebuilt_test.go
index 575b926..d775ac3 100644
--- a/android/prebuilt_test.go
+++ b/android/prebuilt_test.go
@@ -351,7 +351,7 @@
 						}
 					})
 
-					moduleIsDisabled := !foo.Module().Enabled()
+					moduleIsDisabled := !foo.Module().Enabled(PanickingConfigAndErrorContext(result.TestContext))
 					deps := foo.Module().(*sourceModule).deps
 					if moduleIsDisabled {
 						if len(deps) > 0 {
diff --git a/android/register.go b/android/register.go
index d00c15f..aeb3b4c 100644
--- a/android/register.go
+++ b/android/register.go
@@ -16,8 +16,9 @@
 
 import (
 	"fmt"
-	"github.com/google/blueprint"
 	"reflect"
+
+	"github.com/google/blueprint"
 )
 
 // A sortable component is one whose registration order affects the order in which it is executed
diff --git a/android/singleton.go b/android/singleton.go
index 76df1eb..d364384 100644
--- a/android/singleton.go
+++ b/android/singleton.go
@@ -284,5 +284,5 @@
 }
 
 func (s *singletonContextAdaptor) OtherModulePropertyErrorf(module Module, property string, format string, args ...interface{}) {
-	s.blueprintSingletonContext().OtherModulePropertyErrorf(module, property, format, args)
+	s.blueprintSingletonContext().OtherModulePropertyErrorf(module, property, format, args...)
 }
diff --git a/android/testing.go b/android/testing.go
index 7b4411e..c692c72 100644
--- a/android/testing.go
+++ b/android/testing.go
@@ -1287,3 +1287,21 @@
 		t.Errorf("%q is not found in %v", expected, result)
 	}
 }
+
+type panickingConfigAndErrorContext struct {
+	ctx *TestContext
+}
+
+func (ctx *panickingConfigAndErrorContext) OtherModulePropertyErrorf(module Module, property, fmt string, args ...interface{}) {
+	panic(ctx.ctx.PropertyErrorf(module, property, fmt, args...).Error())
+}
+
+func (ctx *panickingConfigAndErrorContext) Config() Config {
+	return ctx.ctx.Config()
+}
+
+func PanickingConfigAndErrorContext(ctx *TestContext) ConfigAndErrorContext {
+	return &panickingConfigAndErrorContext{
+		ctx: ctx,
+	}
+}
diff --git a/android/variable.go b/android/variable.go
index 599f88e..309824f 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -58,13 +58,13 @@
 		// unbundled_build is a catch-all property to annotate modules that don't build in one or
 		// more unbundled branches, usually due to dependencies missing from the manifest.
 		Unbundled_build struct {
-			Enabled *bool `android:"arch_variant"`
+			Enabled proptools.Configurable[bool] `android:"arch_variant,replace_instead_of_append"`
 		} `android:"arch_variant"`
 
 		// similar to `Unbundled_build`, but `Always_use_prebuilt_sdks` means that it uses prebuilt
 		// sdk specifically.
 		Always_use_prebuilt_sdks struct {
-			Enabled *bool `android:"arch_variant"`
+			Enabled proptools.Configurable[bool] `android:"arch_variant,replace_instead_of_append"`
 		} `android:"arch_variant"`
 
 		Malloc_not_svelte struct {