android/module.go

// Copyright 2015 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 (
	"android/soong/bazel"
	"crypto/md5"
	"encoding/hex"
	"encoding/json"
	"fmt"
	"net/url"
	"path/filepath"
	"reflect"
	"sort"
	"strings"

	"github.com/google/blueprint"
	"github.com/google/blueprint/proptools"
)

var (
	DeviceSharedLibrary = "shared_library"
	DeviceStaticLibrary = "static_library"
)

type Module interface {
	blueprint.Module

	// GenerateAndroidBuildActions is analogous to Blueprints' GenerateBuildActions,
	// but GenerateAndroidBuildActions also has access to Android-specific information.
	// For more information, see Module.GenerateBuildActions within Blueprint's module_ctx.go
	GenerateAndroidBuildActions(ModuleContext)

	// Add dependencies to the components of a module, i.e. modules that are created
	// by the module and which are considered to be part of the creating module.
	//
	// This is called before prebuilts are renamed so as to allow a dependency to be
	// added directly to a prebuilt child module instead of depending on a source module
	// and relying on prebuilt processing to switch to the prebuilt module if preferred.
	//
	// A dependency on a prebuilt must include the "prebuilt_" prefix.
	ComponentDepsMutator(ctx BottomUpMutatorContext)

	DepsMutator(BottomUpMutatorContext)

	base() *ModuleBase
	Disable()
	Enabled() bool
	Target() Target
	MultiTargets() []Target

	// ImageVariation returns the image variation of this module.
	//
	// The returned structure has its Mutator field set to "image" and its Variation field set to the
	// image variation, e.g. recovery, ramdisk, etc.. The Variation field is "" for host modules and
	// device modules that have no image variation.
	ImageVariation() blueprint.Variation

	Owner() string
	InstallInData() bool
	InstallInTestcases() bool
	InstallInSanitizerDir() bool
	InstallInRamdisk() bool
	InstallInVendorRamdisk() bool
	InstallInDebugRamdisk() bool
	InstallInRecovery() bool
	InstallInRoot() bool
	InstallInVendor() bool
	InstallForceOS() (*OsType, *ArchType)
	PartitionTag(DeviceConfig) string
	HideFromMake()
	IsHideFromMake() bool
	IsSkipInstall() bool
	MakeUninstallable()
	ReplacedByPrebuilt()
	IsReplacedByPrebuilt() bool
	ExportedToMake() bool
	InitRc() Paths
	VintfFragments() Paths
	EffectiveLicenseKinds() []string
	EffectiveLicenseFiles() Paths

	AddProperties(props ...interface{})
	GetProperties() []interface{}

	BuildParamsForTests() []BuildParams
	RuleParamsForTests() map[blueprint.Rule]blueprint.RuleParams
	VariablesForTests() map[string]string

	// String returns a string that includes the module name and variants for printing during debugging.
	String() string

	// Get the qualified module id for this module.
	qualifiedModuleId(ctx BaseModuleContext) qualifiedModuleName

	// Get information about the properties that can contain visibility rules.
	visibilityProperties() []visibilityProperty

	RequiredModuleNames() []string
	HostRequiredModuleNames() []string
	TargetRequiredModuleNames() []string

	FilesToInstall() InstallPaths
	PackagingSpecs() []PackagingSpec

	// TransitivePackagingSpecs returns the PackagingSpecs for this module and any transitive
	// dependencies with dependency tags for which IsInstallDepNeeded() returns true.
	TransitivePackagingSpecs() []PackagingSpec
}

// Qualified id for a module
type qualifiedModuleName struct {
	// The package (i.e. directory) in which the module is defined, without trailing /
	pkg string

	// The name of the module, empty string if package.
	name string
}

func (q qualifiedModuleName) String() string {
	if q.name == "" {
		return "//" + q.pkg
	}
	return "//" + q.pkg + ":" + q.name
}

func (q qualifiedModuleName) isRootPackage() bool {
	return q.pkg == "" && q.name == ""
}

// Get the id for the package containing this module.
func (q qualifiedModuleName) getContainingPackageId() qualifiedModuleName {
	pkg := q.pkg
	if q.name == "" {
		if pkg == "" {
			panic(fmt.Errorf("Cannot get containing package id of root package"))
		}

		index := strings.LastIndex(pkg, "/")
		if index == -1 {
			pkg = ""
		} else {
			pkg = pkg[:index]
		}
	}
	return newPackageId(pkg)
}

func newPackageId(pkg string) qualifiedModuleName {
	// A qualified id for a package module has no name.
	return qualifiedModuleName{pkg: pkg, name: ""}
}

type Dist struct {
	// Copy the output of this module to the $DIST_DIR when `dist` is specified on the
	// command line and any of these targets are also on the command line, or otherwise
	// built
	Targets []string `android:"arch_variant"`

	// The name of the output artifact. This defaults to the basename of the output of
	// the module.
	Dest *string `android:"arch_variant"`

	// The directory within the dist directory to store the artifact. Defaults to the
	// top level directory ("").
	Dir *string `android:"arch_variant"`

	// A suffix to add to the artifact file name (before any extension).
	Suffix *string `android:"arch_variant"`

	// If true, then the artifact file will be appended with _<product name>. For
	// example, if the product is coral and the module is an android_app module
	// of name foo, then the artifact would be foo_coral.apk. If false, there is
	// no change to the artifact file name.
	Append_artifact_with_product *bool `android:"arch_variant"`

	// A string tag to select the OutputFiles associated with the tag.
	//
	// If no tag is specified then it will select the default dist paths provided
	// by the module type. If a tag of "" is specified then it will return the
	// default output files provided by the modules, i.e. the result of calling
	// OutputFiles("").
	Tag *string `android:"arch_variant"`
}

// NamedPath associates a path with a name. e.g. a license text path with a package name
type NamedPath struct {
	Path Path
	Name string
}

// String returns an escaped string representing the `NamedPath`.
func (p NamedPath) String() string {
	if len(p.Name) > 0 {
		return p.Path.String() + ":" + url.QueryEscape(p.Name)
	}
	return p.Path.String()
}

// NamedPaths describes a list of paths each associated with a name.
type NamedPaths []NamedPath

// Strings returns a list of escaped strings representing each `NamedPath` in the list.
func (l NamedPaths) Strings() []string {
	result := make([]string, 0, len(l))
	for _, p := range l {
		result = append(result, p.String())
	}
	return result
}

// SortedUniqueNamedPaths modifies `l` in place to return the sorted unique subset.
func SortedUniqueNamedPaths(l NamedPaths) NamedPaths {
	if len(l) == 0 {
		return l
	}
	sort.Slice(l, func(i, j int) bool {
		return l[i].String() < l[j].String()
	})
	k := 0
	for i := 1; i < len(l); i++ {
		if l[i].String() == l[k].String() {
			continue
		}
		k++
		if k < i {
			l[k] = l[i]
		}
	}
	return l[:k+1]
}

// soongConfigTrace holds all references to VendorVars. Uses []string for blueprint:"mutated"
type soongConfigTrace struct {
	Bools   []string `json:",omitempty"`
	Strings []string `json:",omitempty"`
	IsSets  []string `json:",omitempty"`
}

func (c *soongConfigTrace) isEmpty() bool {
	return len(c.Bools) == 0 && len(c.Strings) == 0 && len(c.IsSets) == 0
}

// Returns hash of serialized trace records (empty string if there's no trace recorded)
func (c *soongConfigTrace) hash() string {
	// Use MD5 for speed. We don't care collision or preimage attack
	if c.isEmpty() {
		return ""
	}
	j, err := json.Marshal(c)
	if err != nil {
		panic(fmt.Errorf("json marshal of %#v failed: %#v", *c, err))
	}
	hash := md5.Sum(j)
	return hex.EncodeToString(hash[:])
}

type nameProperties struct {
	// The name of the module.  Must be unique across all modules.
	Name *string
}

type commonProperties struct {
	// emit build rules for this module
	//
	// Disabling a module should only be done for those modules that cannot be built
	// in the current environment. Modules that can build in the current environment
	// 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"`

	// Controls the visibility of this module to other modules. Allowable values are one or more of
	// these formats:
	//
	//  ["//visibility:public"]: Anyone can use this module.
	//  ["//visibility:private"]: Only rules in the module's package (not its subpackages) can use
	//      this module.
	//  ["//visibility:override"]: Discards any rules inherited from defaults or a creating module.
	//      Can only be used at the beginning of a list of visibility rules.
	//  ["//some/package:__pkg__", "//other/package:__pkg__"]: Only modules in some/package and
	//      other/package (defined in some/package/*.bp and other/package/*.bp) have access to
	//      this module. Note that sub-packages do not have access to the rule; for example,
	//      //some/package/foo:bar or //other/package/testing:bla wouldn't have access. __pkg__
	//      is a special module and must be used verbatim. It represents all of the modules in the
	//      package.
	//  ["//project:__subpackages__", "//other:__subpackages__"]: Only modules in packages project
	//      or other or in one of their sub-packages have access to this module. For example,
	//      //project:rule, //project/library:lib or //other/testing/internal:munge are allowed
	//      to depend on this rule (but not //independent:evil)
	//  ["//project"]: This is shorthand for ["//project:__pkg__"]
	//  [":__subpackages__"]: This is shorthand for ["//project:__subpackages__"] where
	//      //project is the module's package. e.g. using [":__subpackages__"] in
	//      packages/apps/Settings/Android.bp is equivalent to
	//      //packages/apps/Settings:__subpackages__.
	//  ["//visibility:legacy_public"]: The default visibility, behaves as //visibility:public
	//      for now. It is an error if it is used in a module.
	//
	// If a module does not specify the `visibility` property then it uses the
	// `default_visibility` property of the `package` module in the module's package.
	//
	// If the `default_visibility` property is not set for the module's package then
	// it will use the `default_visibility` of its closest ancestor package for which
	// a `default_visibility` property is specified.
	//
	// If no `default_visibility` property can be found then the module uses the
	// global default of `//visibility:legacy_public`.
	//
	// The `visibility` property has no effect on a defaults module although it does
	// apply to any non-defaults module that uses it. To set the visibility of a
	// defaults module, use the `defaults_visibility` property on the defaults module;
	// not to be confused with the `default_visibility` property on the package module.
	//
	// See https://android.googlesource.com/platform/build/soong/+/master/README.md#visibility for
	// more details.
	Visibility []string

	// Describes the licenses applicable to this module. Must reference license modules.
	Licenses []string

	// Flattened from direct license dependencies. Equal to Licenses unless particular module adds more.
	Effective_licenses []string `blueprint:"mutated"`
	// Override of module name when reporting licenses
	Effective_package_name *string `blueprint:"mutated"`
	// Notice files
	Effective_license_text NamedPaths `blueprint:"mutated"`
	// License names
	Effective_license_kinds []string `blueprint:"mutated"`
	// License conditions
	Effective_license_conditions []string `blueprint:"mutated"`

	// control whether this module compiles for 32-bit, 64-bit, or both.  Possible values
	// are "32" (compile for 32-bit only), "64" (compile for 64-bit only), "both" (compile for both
	// architectures), or "first" (compile for 64-bit on a 64-bit platform, and 32-bit on a 32-bit
	// platform).
	Compile_multilib *string `android:"arch_variant"`

	Target struct {
		Host struct {
			Compile_multilib *string
		}
		Android struct {
			Compile_multilib *string
		}
	}

	// If set to true then the archMutator will create variants for each arch specific target
	// (e.g. 32/64) that the module is required to produce. If set to false then it will only
	// create a variant for the architecture and will list the additional arch specific targets
	// that the variant needs to produce in the CompileMultiTargets property.
	UseTargetVariants bool   `blueprint:"mutated"`
	Default_multilib  string `blueprint:"mutated"`

	// whether this is a proprietary vendor module, and should be installed into /vendor
	Proprietary *bool

	// vendor who owns this module
	Owner *string

	// whether this module is specific to an SoC (System-On-a-Chip). When set to true,
	// it is installed into /vendor (or /system/vendor if vendor partition does not exist).
	// Use `soc_specific` instead for better meaning.
	Vendor *bool

	// whether this module is specific to an SoC (System-On-a-Chip). When set to true,
	// it is installed into /vendor (or /system/vendor if vendor partition does not exist).
	Soc_specific *bool

	// whether this module is specific to a device, not only for SoC, but also for off-chip
	// peripherals. When set to true, it is installed into /odm (or /vendor/odm if odm partition
	// does not exist, or /system/vendor/odm if both odm and vendor partitions do not exist).
	// This implies `soc_specific:true`.
	Device_specific *bool

	// whether this module is specific to a software configuration of a product (e.g. country,
	// network operator, etc). When set to true, it is installed into /product (or
	// /system/product if product partition does not exist).
	Product_specific *bool

	// whether this module extends system. When set to true, it is installed into /system_ext
	// (or /system/system_ext if system_ext partition does not exist).
	System_ext_specific *bool

	// Whether this module is installed to recovery partition
	Recovery *bool

	// Whether this module is installed to ramdisk
	Ramdisk *bool

	// Whether this module is installed to vendor ramdisk
	Vendor_ramdisk *bool

	// Whether this module is installed to debug ramdisk
	Debug_ramdisk *bool

	// Whether this module is built for non-native architectures (also known as native bridge binary)
	Native_bridge_supported *bool `android:"arch_variant"`

	// init.rc files to be installed if this module is installed
	Init_rc []string `android:"arch_variant,path"`

	// VINTF manifest fragments to be installed if this module is installed
	Vintf_fragments []string `android:"path"`

	// names of other modules to install if this module is installed
	Required []string `android:"arch_variant"`

	// names of other modules to install on host if this module is installed
	Host_required []string `android:"arch_variant"`

	// names of other modules to install on target if this module is installed
	Target_required []string `android:"arch_variant"`

	// The OsType of artifacts that this module variant is responsible for creating.
	//
	// Set by osMutator
	CompileOS OsType `blueprint:"mutated"`

	// The Target of artifacts that this module variant is responsible for creating.
	//
	// Set by archMutator
	CompileTarget Target `blueprint:"mutated"`

	// The additional arch specific targets (e.g. 32/64 bit) that this module variant is
	// responsible for creating.
	//
	// By default this is nil as, where necessary, separate variants are created for the
	// different multilib types supported and that information is encapsulated in the
	// CompileTarget so the module variant simply needs to create artifacts for that.
	//
	// However, if UseTargetVariants is set to false (e.g. by
	// InitAndroidMultiTargetsArchModule)  then no separate variants are created for the
	// multilib targets. Instead a single variant is created for the architecture and
	// this contains the multilib specific targets that this variant should create.
	//
	// Set by archMutator
	CompileMultiTargets []Target `blueprint:"mutated"`

	// True if the module variant's CompileTarget is the primary target
	//
	// Set by archMutator
	CompilePrimary bool `blueprint:"mutated"`

	// Set by InitAndroidModule
	HostOrDeviceSupported HostOrDeviceSupported `blueprint:"mutated"`
	ArchSpecific          bool                  `blueprint:"mutated"`

	// If set to true then a CommonOS variant will be created which will have dependencies
	// on all its OsType specific variants. Used by sdk/module_exports to create a snapshot
	// that covers all os and architecture variants.
	//
	// The OsType specific variants can be retrieved by calling
	// GetOsSpecificVariantsOfCommonOSVariant
	//
	// Set at module initialization time by calling InitCommonOSAndroidMultiTargetsArchModule
	CreateCommonOSVariant bool `blueprint:"mutated"`

	// If set to true then this variant is the CommonOS variant that has dependencies on its
	// OsType specific variants.
	//
	// Set by osMutator.
	CommonOSVariant bool `blueprint:"mutated"`

	// When HideFromMake is set to true, no entry for this variant will be emitted in the
	// generated Android.mk file.
	HideFromMake bool `blueprint:"mutated"`

	// When SkipInstall is set to true, calls to ctx.InstallFile, ctx.InstallExecutable,
	// ctx.InstallSymlink and ctx.InstallAbsoluteSymlink act like calls to ctx.PackageFile
	// and don't create a rule to install the file.
	SkipInstall bool `blueprint:"mutated"`

	// UninstallableApexPlatformVariant is set by MakeUninstallable called by the apex
	// mutator.  MakeUninstallable also sets HideFromMake.  UninstallableApexPlatformVariant
	// is used to avoid adding install or packaging dependencies into libraries provided
	// by apexes.
	UninstallableApexPlatformVariant bool `blueprint:"mutated"`

	// Whether the module has been replaced by a prebuilt
	ReplacedByPrebuilt bool `blueprint:"mutated"`

	// Disabled by mutators. If set to true, it overrides Enabled property.
	ForcedDisabled bool `blueprint:"mutated"`

	NamespaceExportedToMake bool `blueprint:"mutated"`

	MissingDeps        []string `blueprint:"mutated"`
	CheckedMissingDeps bool     `blueprint:"mutated"`

	// Name and variant strings stored by mutators to enable Module.String()
	DebugName       string   `blueprint:"mutated"`
	DebugMutators   []string `blueprint:"mutated"`
	DebugVariations []string `blueprint:"mutated"`

	// ImageVariation is set by ImageMutator to specify which image this variation is for,
	// for example "" for core or "recovery" for recovery.  It will often be set to one of the
	// constants in image.go, but can also be set to a custom value by individual module types.
	ImageVariation string `blueprint:"mutated"`

	// SoongConfigTrace records accesses to VendorVars (soong_config). The trace will be hashed
	// and used as a subdir of PathForModuleOut.  Note that we mainly focus on incremental
	// builds among similar products (e.g. aosp_cf_x86_64_phone and aosp_cf_x86_64_foldable),
	// and there are variables other than soong_config, which isn't captured by soong config
	// trace, but influence modules among products.
	SoongConfigTrace     soongConfigTrace `blueprint:"mutated"`
	SoongConfigTraceHash string           `blueprint:"mutated"`
}

type distProperties struct {
	// configuration to distribute output files from this module to the distribution
	// directory (default: $OUT/dist, configurable with $DIST_DIR)
	Dist Dist `android:"arch_variant"`

	// a list of configurations to distribute output files from this module to the
	// distribution directory (default: $OUT/dist, configurable with $DIST_DIR)
	Dists []Dist `android:"arch_variant"`
}

// CommonTestOptions represents the common `test_options` properties in
// Android.bp.
type CommonTestOptions struct {
	// If the test is a hostside (no device required) unittest that shall be run
	// during presubmit check.
	Unit_test *bool

	// Tags provide additional metadata to customize test execution by downstream
	// test runners. The tags have no special meaning to Soong.
	Tags []string
}

// SetAndroidMkEntries sets AndroidMkEntries according to the value of base
// `test_options`.
func (t *CommonTestOptions) SetAndroidMkEntries(entries *AndroidMkEntries) {
	entries.SetBoolIfTrue("LOCAL_IS_UNIT_TEST", Bool(t.Unit_test))
	if len(t.Tags) > 0 {
		entries.AddStrings("LOCAL_TEST_OPTIONS_TAGS", t.Tags...)
	}
}

// The key to use in TaggedDistFiles when a Dist structure does not specify a
// tag property. This intentionally does not use "" as the default because that
// would mean that an empty tag would have a different meaning when used in a dist
// structure that when used to reference a specific set of output paths using the
// :module{tag} syntax, which passes tag to the OutputFiles(tag) method.
const DefaultDistTag = "<default-dist-tag>"

// A map of OutputFile tag keys to Paths, for disting purposes.
type TaggedDistFiles map[string]Paths

// addPathsForTag adds a mapping from the tag to the paths. If the map is nil
// then it will create a map, update it and then return it. If a mapping already
// exists for the tag then the paths are appended to the end of the current list
// of paths, ignoring any duplicates.
func (t TaggedDistFiles) addPathsForTag(tag string, paths ...Path) TaggedDistFiles {
	if t == nil {
		t = make(TaggedDistFiles)
	}

	for _, distFile := range paths {
		if distFile != nil && !t[tag].containsPath(distFile) {
			t[tag] = append(t[tag], distFile)
		}
	}

	return t
}

// merge merges the entries from the other TaggedDistFiles object into this one.
// If the TaggedDistFiles is nil then it will create a new instance, merge the
// other into it, and then return it.
func (t TaggedDistFiles) merge(other TaggedDistFiles) TaggedDistFiles {
	for tag, paths := range other {
		t = t.addPathsForTag(tag, paths...)
	}

	return t
}

func MakeDefaultDistFiles(paths ...Path) TaggedDistFiles {
	for _, p := range paths {
		if p == nil {
			panic("The path to a dist file cannot be nil.")
		}
	}

	// The default OutputFile tag is the empty "" string.
	return TaggedDistFiles{DefaultDistTag: paths}
}

type hostAndDeviceProperties struct {
	// If set to true, build a variant of the module for the host.  Defaults to false.
	Host_supported *bool

	// If set to true, build a variant of the module for the device.  Defaults to true.
	Device_supported *bool
}

type Multilib string

const (
	MultilibBoth        Multilib = "both"
	MultilibFirst       Multilib = "first"
	MultilibCommon      Multilib = "common"
	MultilibCommonFirst Multilib = "common_first"
)

type HostOrDeviceSupported int

const (
	hostSupported = 1 << iota
	hostCrossSupported
	deviceSupported
	hostDefault
	deviceDefault

	// Host and HostCross are built by default. Device is not supported.
	HostSupported = hostSupported | hostCrossSupported | hostDefault

	// Host is built by default. HostCross and Device are not supported.
	HostSupportedNoCross = hostSupported | hostDefault

	// Device is built by default. Host and HostCross are not supported.
	DeviceSupported = deviceSupported | deviceDefault

	// By default, _only_ device variant is built. Device variant can be disabled with `device_supported: false`
	// Host and HostCross are disabled by default and can be enabled with `host_supported: true`
	HostAndDeviceSupported = hostSupported | hostCrossSupported | deviceSupported | deviceDefault

	// Host, HostCross, and Device are built by default.
	// Building Device can be disabled with `device_supported: false`
	// Building Host and HostCross can be disabled with `host_supported: false`
	HostAndDeviceDefault = hostSupported | hostCrossSupported | hostDefault |
		deviceSupported | deviceDefault

	// Nothing is supported. This is not exposed to the user, but used to mark a
	// host only module as unsupported when the module type is not supported on
	// the host OS. E.g. benchmarks are supported on Linux but not Darwin.
	NeitherHostNorDeviceSupported = 0
)

type moduleKind int

const (
	platformModule moduleKind = iota
	deviceSpecificModule
	socSpecificModule
	productSpecificModule
	systemExtSpecificModule
)

func (k moduleKind) String() string {
	switch k {
	case platformModule:
		return "platform"
	case deviceSpecificModule:
		return "device-specific"
	case socSpecificModule:
		return "soc-specific"
	case productSpecificModule:
		return "product-specific"
	case systemExtSpecificModule:
		return "systemext-specific"
	default:
		panic(fmt.Errorf("unknown module kind %d", k))
	}
}

func initAndroidModuleBase(m Module) {
	m.base().module = m
}

// InitAndroidModule initializes the Module as an Android module that is not architecture-specific.
// It adds the common properties, for example "name" and "enabled".
func InitAndroidModule(m Module) {
	initAndroidModuleBase(m)
	base := m.base()

	m.AddProperties(
		&base.nameProperties,
		&base.commonProperties,
		&base.distProperties)

	initProductVariableModule(m)

	// The default_visibility property needs to be checked and parsed by the visibility module during
	// its checking and parsing phases so make it the primary visibility property.
	setPrimaryVisibilityProperty(m, "visibility", &base.commonProperties.Visibility)

	// The default_applicable_licenses property needs to be checked and parsed by the licenses module during
	// its checking and parsing phases so make it the primary licenses property.
	setPrimaryLicensesProperty(m, "licenses", &base.commonProperties.Licenses)
}

// InitAndroidArchModule initializes the Module as an Android module that is architecture-specific.
// It adds the common properties, for example "name" and "enabled", as well as runtime generated
// property structs for architecture-specific versions of generic properties tagged with
// `android:"arch_variant"`.
//
//	InitAndroidModule should not be called if InitAndroidArchModule was called.
func InitAndroidArchModule(m Module, hod HostOrDeviceSupported, defaultMultilib Multilib) {
	InitAndroidModule(m)

	base := m.base()
	base.commonProperties.HostOrDeviceSupported = hod
	base.commonProperties.Default_multilib = string(defaultMultilib)
	base.commonProperties.ArchSpecific = true
	base.commonProperties.UseTargetVariants = true

	if hod&hostSupported != 0 && hod&deviceSupported != 0 {
		m.AddProperties(&base.hostAndDeviceProperties)
	}

	initArchModule(m)
}

// InitAndroidMultiTargetsArchModule initializes the Module as an Android module that is
// architecture-specific, but will only have a single variant per OS that handles all the
// architectures simultaneously.  The list of Targets that it must handle will be available from
// ModuleContext.MultiTargets. It adds the common properties, for example "name" and "enabled", as
// well as runtime generated property structs for architecture-specific versions of generic
// properties tagged with `android:"arch_variant"`.
//
// InitAndroidModule or InitAndroidArchModule should not be called if
// InitAndroidMultiTargetsArchModule was called.
func InitAndroidMultiTargetsArchModule(m Module, hod HostOrDeviceSupported, defaultMultilib Multilib) {
	InitAndroidArchModule(m, hod, defaultMultilib)
	m.base().commonProperties.UseTargetVariants = false
}

// InitCommonOSAndroidMultiTargetsArchModule initializes the Module as an Android module that is
// architecture-specific, but will only have a single variant per OS that handles all the
// architectures simultaneously, and will also have an additional CommonOS variant that has
// dependencies on all the OS-specific variants.  The list of Targets that it must handle will be
// available from ModuleContext.MultiTargets.  It adds the common properties, for example "name" and
// "enabled", as well as runtime generated property structs for architecture-specific versions of
// generic properties tagged with `android:"arch_variant"`.
//
// InitAndroidModule, InitAndroidArchModule or InitAndroidMultiTargetsArchModule should not be
// called if InitCommonOSAndroidMultiTargetsArchModule was called.
func InitCommonOSAndroidMultiTargetsArchModule(m Module, hod HostOrDeviceSupported, defaultMultilib Multilib) {
	InitAndroidArchModule(m, hod, defaultMultilib)
	m.base().commonProperties.UseTargetVariants = false
	m.base().commonProperties.CreateCommonOSVariant = true
}

// A ModuleBase object contains the properties that are common to all Android
// modules.  It should be included as an anonymous field in every module
// struct definition.  InitAndroidModule should then be called from the module's
// factory function, and the return values from InitAndroidModule should be
// returned from the factory function.
//
// The ModuleBase type is responsible for implementing the GenerateBuildActions
// method to support the blueprint.Module interface. This method will then call
// the module's GenerateAndroidBuildActions method once for each build variant
// that is to be built. GenerateAndroidBuildActions is passed a ModuleContext
// rather than the usual blueprint.ModuleContext.
// ModuleContext exposes extra functionality specific to the Android build
// system including details about the particular build variant that is to be
// generated.
//
// For example:
//
//	import (
//	    "android/soong/android"
//	)
//
//	type myModule struct {
//	    android.ModuleBase
//	    properties struct {
//	        MyProperty string
//	    }
//	}
//
//	func NewMyModule() android.Module {
//	    m := &myModule{}
//	    m.AddProperties(&m.properties)
//	    android.InitAndroidModule(m)
//	    return m
//	}
//
//	func (m *myModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
//	    // Get the CPU architecture for the current build variant.
//	    variantArch := ctx.Arch()
//
//	    // ...
//	}
type ModuleBase struct {
	// Putting the curiously recurring thing pointing to the thing that contains
	// the thing pattern to good use.
	// TODO: remove this
	module Module

	nameProperties          nameProperties
	commonProperties        commonProperties
	distProperties          distProperties
	variableProperties      interface{}
	hostAndDeviceProperties hostAndDeviceProperties

	// Arch specific versions of structs in GetProperties() prior to
	// initialization in InitAndroidArchModule, lets call it `generalProperties`.
	// The outer index has the same order as generalProperties and the inner index
	// chooses the props specific to the architecture. The interface{} value is an
	// archPropRoot that is filled with arch specific values by the arch mutator.
	archProperties [][]interface{}

	// Properties specific to the Blueprint to BUILD migration.
	bazelTargetModuleProperties bazel.BazelTargetModuleProperties

	// Information about all the properties on the module that contains visibility rules that need
	// checking.
	visibilityPropertyInfo []visibilityProperty

	// The primary visibility property, may be nil, that controls access to the module.
	primaryVisibilityProperty visibilityProperty

	// The primary licenses property, may be nil, records license metadata for the module.
	primaryLicensesProperty applicableLicensesProperty

	noAddressSanitizer   bool
	installFiles         InstallPaths
	installFilesDepSet   *DepSet[InstallPath]
	checkbuildFiles      Paths
	packagingSpecs       []PackagingSpec
	packagingSpecsDepSet *DepSet[PackagingSpec]
	// katiInstalls tracks the install rules that were created by Soong but are being exported
	// to Make to convert to ninja rules so that Make can add additional dependencies.
	katiInstalls katiInstalls
	katiSymlinks katiInstalls
	testData     []DataPath

	// The files to copy to the dist as explicitly specified in the .bp file.
	distFiles TaggedDistFiles

	// Used by buildTargetSingleton to create checkbuild and per-directory build targets
	// Only set on the final variant of each module
	installTarget    WritablePath
	checkbuildTarget WritablePath
	blueprintDir     string

	hooks hooks

	registerProps []interface{}

	// For tests
	buildParams []BuildParams
	ruleParams  map[blueprint.Rule]blueprint.RuleParams
	variables   map[string]string

	initRcPaths         Paths
	vintfFragmentsPaths Paths

	// set of dependency module:location mappings used to populate the license metadata for
	// apex containers.
	licenseInstallMap []string

	// The path to the generated license metadata file for the module.
	licenseMetadataFile WritablePath
}

func (m *ModuleBase) AddJSONData(d *map[string]interface{}) {
	(*d)["Android"] = map[string]interface{}{
		// Properties set in Blueprint or in blueprint of a defaults modules
		"SetProperties": m.propertiesWithValues(),
	}
}

type propInfo struct {
	Name   string
	Type   string
	Value  string
	Values []string
}

func (m *ModuleBase) propertiesWithValues() []propInfo {
	var info []propInfo
	props := m.GetProperties()

	var propsWithValues func(name string, v reflect.Value)
	propsWithValues = func(name string, v reflect.Value) {
		kind := v.Kind()
		switch kind {
		case reflect.Ptr, reflect.Interface:
			if v.IsNil() {
				return
			}
			propsWithValues(name, v.Elem())
		case reflect.Struct:
			if v.IsZero() {
				return
			}
			for i := 0; i < v.NumField(); i++ {
				namePrefix := name
				sTyp := v.Type().Field(i)
				if proptools.ShouldSkipProperty(sTyp) {
					continue
				}
				if name != "" && !strings.HasSuffix(namePrefix, ".") {
					namePrefix += "."
				}
				if !proptools.IsEmbedded(sTyp) {
					namePrefix += sTyp.Name
				}
				sVal := v.Field(i)
				propsWithValues(namePrefix, sVal)
			}
		case reflect.Array, reflect.Slice:
			if v.IsNil() {
				return
			}
			elKind := v.Type().Elem().Kind()
			info = append(info, propInfo{Name: name, Type: elKind.String() + " " + kind.String(), Values: sliceReflectionValue(v)})
		default:
			info = append(info, propInfo{Name: name, Type: kind.String(), Value: reflectionValue(v)})
		}
	}

	for _, p := range props {
		propsWithValues("", reflect.ValueOf(p).Elem())
	}
	sort.Slice(info, func(i, j int) bool {
		return info[i].Name < info[j].Name
	})
	return info
}

func reflectionValue(value reflect.Value) string {
	switch value.Kind() {
	case reflect.Bool:
		return fmt.Sprintf("%t", value.Bool())
	case reflect.Int64:
		return fmt.Sprintf("%d", value.Int())
	case reflect.String:
		return fmt.Sprintf("%s", value.String())
	case reflect.Struct:
		if value.IsZero() {
			return "{}"
		}
		length := value.NumField()
		vals := make([]string, length, length)
		for i := 0; i < length; i++ {
			sTyp := value.Type().Field(i)
			if proptools.ShouldSkipProperty(sTyp) {
				continue
			}
			name := sTyp.Name
			vals[i] = fmt.Sprintf("%s: %s", name, reflectionValue(value.Field(i)))
		}
		return fmt.Sprintf("%s{%s}", value.Type(), strings.Join(vals, ", "))
	case reflect.Array, reflect.Slice:
		vals := sliceReflectionValue(value)
		return fmt.Sprintf("[%s]", strings.Join(vals, ", "))
	}
	return ""
}

func sliceReflectionValue(value reflect.Value) []string {
	length := value.Len()
	vals := make([]string, length, length)
	for i := 0; i < length; i++ {
		vals[i] = reflectionValue(value.Index(i))
	}
	return vals
}

func (m *ModuleBase) ComponentDepsMutator(BottomUpMutatorContext) {}

func (m *ModuleBase) DepsMutator(BottomUpMutatorContext) {}

// AddProperties "registers" the provided props
// each value in props MUST be a pointer to a struct
func (m *ModuleBase) AddProperties(props ...interface{}) {
	m.registerProps = append(m.registerProps, props...)
}

func (m *ModuleBase) GetProperties() []interface{} {
	return m.registerProps
}

func (m *ModuleBase) BuildParamsForTests() []BuildParams {
	// Expand the references to module variables like $flags[0-9]*,
	// so we do not need to change many existing unit tests.
	// This looks like undoing the shareFlags optimization in cc's
	// transformSourceToObj, and should only affects unit tests.
	vars := m.VariablesForTests()
	buildParams := append([]BuildParams(nil), m.buildParams...)
	for i := range buildParams {
		newArgs := make(map[string]string)
		for k, v := range buildParams[i].Args {
			newArgs[k] = v
			// Replaces both ${flags1} and $flags1 syntax.
			if strings.HasPrefix(v, "${") && strings.HasSuffix(v, "}") {
				if value, found := vars[v[2:len(v)-1]]; found {
					newArgs[k] = value
				}
			} else if strings.HasPrefix(v, "$") {
				if value, found := vars[v[1:]]; found {
					newArgs[k] = value
				}
			}
		}
		buildParams[i].Args = newArgs
	}
	return buildParams
}

func (m *ModuleBase) RuleParamsForTests() map[blueprint.Rule]blueprint.RuleParams {
	return m.ruleParams
}

func (m *ModuleBase) VariablesForTests() map[string]string {
	return m.variables
}

// Name returns the name of the module.  It may be overridden by individual module types, for
// example prebuilts will prepend prebuilt_ to the name.
func (m *ModuleBase) Name() string {
	return String(m.nameProperties.Name)
}

// String returns a string that includes the module name and variants for printing during debugging.
func (m *ModuleBase) String() string {
	sb := strings.Builder{}
	sb.WriteString(m.commonProperties.DebugName)
	sb.WriteString("{")
	for i := range m.commonProperties.DebugMutators {
		if i != 0 {
			sb.WriteString(",")
		}
		sb.WriteString(m.commonProperties.DebugMutators[i])
		sb.WriteString(":")
		sb.WriteString(m.commonProperties.DebugVariations[i])
	}
	sb.WriteString("}")
	return sb.String()
}

// BaseModuleName returns the name of the module as specified in the blueprints file.
func (m *ModuleBase) BaseModuleName() string {
	return String(m.nameProperties.Name)
}

func (m *ModuleBase) base() *ModuleBase {
	return m
}

func (m *ModuleBase) qualifiedModuleId(ctx BaseModuleContext) qualifiedModuleName {
	return qualifiedModuleName{pkg: ctx.ModuleDir(), name: ctx.ModuleName()}
}

func (m *ModuleBase) visibilityProperties() []visibilityProperty {
	return m.visibilityPropertyInfo
}

func (m *ModuleBase) Dists() []Dist {
	if len(m.distProperties.Dist.Targets) > 0 {
		// Make a copy of the underlying Dists slice to protect against
		// backing array modifications with repeated calls to this method.
		distsCopy := append([]Dist(nil), m.distProperties.Dists...)
		return append(distsCopy, m.distProperties.Dist)
	} else {
		return m.distProperties.Dists
	}
}

func (m *ModuleBase) GenerateTaggedDistFiles(ctx BaseModuleContext) TaggedDistFiles {
	var distFiles TaggedDistFiles
	for _, dist := range m.Dists() {
		// If no tag is specified then it means to use the default dist paths so use
		// the special tag name which represents that.
		tag := proptools.StringDefault(dist.Tag, DefaultDistTag)

		if outputFileProducer, ok := m.module.(OutputFileProducer); ok {
			// Call the OutputFiles(tag) method to get the paths associated with the tag.
			distFilesForTag, err := outputFileProducer.OutputFiles(tag)

			// If the tag was not supported and is not DefaultDistTag then it is an error.
			// Failing to find paths for DefaultDistTag is not an error. It just means
			// that the module type requires the legacy behavior.
			if err != nil && tag != DefaultDistTag {
				ctx.PropertyErrorf("dist.tag", "%s", err.Error())
			}

			distFiles = distFiles.addPathsForTag(tag, distFilesForTag...)
		} else if tag != DefaultDistTag {
			// If the tag was specified then it is an error if the module does not
			// implement OutputFileProducer because there is no other way of accessing
			// the paths for the specified tag.
			ctx.PropertyErrorf("dist.tag",
				"tag %s not supported because the module does not implement OutputFileProducer", tag)
		}
	}

	return distFiles
}

func (m *ModuleBase) Target() Target {
	return m.commonProperties.CompileTarget
}

func (m *ModuleBase) TargetPrimary() bool {
	return m.commonProperties.CompilePrimary
}

func (m *ModuleBase) MultiTargets() []Target {
	return m.commonProperties.CompileMultiTargets
}

func (m *ModuleBase) Os() OsType {
	return m.Target().Os
}

func (m *ModuleBase) Host() bool {
	return m.Os().Class == Host
}

func (m *ModuleBase) Device() bool {
	return m.Os().Class == Device
}

func (m *ModuleBase) Arch() Arch {
	return m.Target().Arch
}

func (m *ModuleBase) ArchSpecific() bool {
	return m.commonProperties.ArchSpecific
}

// True if the current variant is a CommonOS variant, false otherwise.
func (m *ModuleBase) IsCommonOSVariant() bool {
	return m.commonProperties.CommonOSVariant
}

// supportsTarget returns true if the given Target is supported by the current module.
func (m *ModuleBase) supportsTarget(target Target) bool {
	switch target.Os.Class {
	case Host:
		if target.HostCross {
			return m.HostCrossSupported()
		} else {
			return m.HostSupported()
		}
	case Device:
		return m.DeviceSupported()
	default:
		return false
	}
}

// DeviceSupported returns true if the current module is supported and enabled for device targets,
// i.e. the factory method set the HostOrDeviceSupported value to include device support and
// the device support is enabled by default or enabled by the device_supported property.
func (m *ModuleBase) DeviceSupported() bool {
	hod := m.commonProperties.HostOrDeviceSupported
	// deviceEnabled is true if the device_supported property is true or the HostOrDeviceSupported
	// value has the deviceDefault bit set.
	deviceEnabled := proptools.BoolDefault(m.hostAndDeviceProperties.Device_supported, hod&deviceDefault != 0)
	return hod&deviceSupported != 0 && deviceEnabled
}

// HostSupported returns true if the current module is supported and enabled for host targets,
// i.e. the factory method set the HostOrDeviceSupported value to include host support and
// the host support is enabled by default or enabled by the host_supported property.
func (m *ModuleBase) HostSupported() bool {
	hod := m.commonProperties.HostOrDeviceSupported
	// hostEnabled is true if the host_supported property is true or the HostOrDeviceSupported
	// value has the hostDefault bit set.
	hostEnabled := proptools.BoolDefault(m.hostAndDeviceProperties.Host_supported, hod&hostDefault != 0)
	return hod&hostSupported != 0 && hostEnabled
}

// HostCrossSupported returns true if the current module is supported and enabled for host cross
// targets, i.e. the factory method set the HostOrDeviceSupported value to include host cross
// support and the host cross support is enabled by default or enabled by the
// host_supported property.
func (m *ModuleBase) HostCrossSupported() bool {
	hod := m.commonProperties.HostOrDeviceSupported
	// hostEnabled is true if the host_supported property is true or the HostOrDeviceSupported
	// value has the hostDefault bit set.
	hostEnabled := proptools.BoolDefault(m.hostAndDeviceProperties.Host_supported, hod&hostDefault != 0)
	return hod&hostCrossSupported != 0 && hostEnabled
}

func (m *ModuleBase) Platform() bool {
	return !m.DeviceSpecific() && !m.SocSpecific() && !m.ProductSpecific() && !m.SystemExtSpecific()
}

func (m *ModuleBase) DeviceSpecific() bool {
	return Bool(m.commonProperties.Device_specific)
}

func (m *ModuleBase) SocSpecific() bool {
	return Bool(m.commonProperties.Vendor) || Bool(m.commonProperties.Proprietary) || Bool(m.commonProperties.Soc_specific)
}

func (m *ModuleBase) ProductSpecific() bool {
	return Bool(m.commonProperties.Product_specific)
}

func (m *ModuleBase) SystemExtSpecific() bool {
	return Bool(m.commonProperties.System_ext_specific)
}

// RequiresStableAPIs returns true if the module will be installed to a partition that may
// be updated separately from the system image.
func (m *ModuleBase) RequiresStableAPIs(ctx BaseModuleContext) bool {
	return m.SocSpecific() || m.DeviceSpecific() ||
		(m.ProductSpecific() && ctx.Config().EnforceProductPartitionInterface())
}

func (m *ModuleBase) PartitionTag(config DeviceConfig) string {
	partition := "system"
	if m.SocSpecific() {
		// A SoC-specific module could be on the vendor partition at
		// "vendor" or the system partition at "system/vendor".
		if config.VendorPath() == "vendor" {
			partition = "vendor"
		}
	} else if m.DeviceSpecific() {
		// A device-specific module could be on the odm partition at
		// "odm", the vendor partition at "vendor/odm", or the system
		// partition at "system/vendor/odm".
		if config.OdmPath() == "odm" {
			partition = "odm"
		} else if strings.HasPrefix(config.OdmPath(), "vendor/") {
			partition = "vendor"
		}
	} else if m.ProductSpecific() {
		// A product-specific module could be on the product partition
		// at "product" or the system partition at "system/product".
		if config.ProductPath() == "product" {
			partition = "product"
		}
	} else if m.SystemExtSpecific() {
		// A system_ext-specific module could be on the system_ext
		// partition at "system_ext" or the system partition at
		// "system/system_ext".
		if config.SystemExtPath() == "system_ext" {
			partition = "system_ext"
		}
	}
	return partition
}

func (m *ModuleBase) Enabled() bool {
	if m.commonProperties.ForcedDisabled {
		return false
	}
	if m.commonProperties.Enabled == nil {
		return !m.Os().DefaultDisabled
	}
	return *m.commonProperties.Enabled
}

func (m *ModuleBase) Disable() {
	m.commonProperties.ForcedDisabled = true
}

// HideFromMake marks this variant so that it is not emitted in the generated Android.mk file.
func (m *ModuleBase) HideFromMake() {
	m.commonProperties.HideFromMake = true
}

// IsHideFromMake returns true if HideFromMake was previously called.
func (m *ModuleBase) IsHideFromMake() bool {
	return m.commonProperties.HideFromMake == true
}

// SkipInstall marks this variant to not create install rules when ctx.Install* are called.
func (m *ModuleBase) SkipInstall() {
	m.commonProperties.SkipInstall = true
}

// IsSkipInstall returns true if this variant is marked to not create install
// rules when ctx.Install* are called.
func (m *ModuleBase) IsSkipInstall() bool {
	return m.commonProperties.SkipInstall
}

// Similar to HideFromMake, but if the AndroidMk entry would set
// LOCAL_UNINSTALLABLE_MODULE then this variant may still output that entry
// rather than leaving it out altogether. That happens in cases where it would
// have other side effects, in particular when it adds a NOTICE file target,
// which other install targets might depend on.
func (m *ModuleBase) MakeUninstallable() {
	m.commonProperties.UninstallableApexPlatformVariant = true
	m.HideFromMake()
}

func (m *ModuleBase) ReplacedByPrebuilt() {
	m.commonProperties.ReplacedByPrebuilt = true
	m.HideFromMake()
}

func (m *ModuleBase) IsReplacedByPrebuilt() bool {
	return m.commonProperties.ReplacedByPrebuilt
}

func (m *ModuleBase) ExportedToMake() bool {
	return m.commonProperties.NamespaceExportedToMake
}

func (m *ModuleBase) EffectiveLicenseKinds() []string {
	return m.commonProperties.Effective_license_kinds
}

func (m *ModuleBase) EffectiveLicenseFiles() Paths {
	result := make(Paths, 0, len(m.commonProperties.Effective_license_text))
	for _, p := range m.commonProperties.Effective_license_text {
		result = append(result, p.Path)
	}
	return result
}

// computeInstallDeps finds the installed paths of all dependencies that have a dependency
// tag that is annotated as needing installation via the isInstallDepNeeded method.
func (m *ModuleBase) computeInstallDeps(ctx ModuleContext) ([]*DepSet[InstallPath], []*DepSet[PackagingSpec]) {
	var installDeps []*DepSet[InstallPath]
	var packagingSpecs []*DepSet[PackagingSpec]
	ctx.VisitDirectDeps(func(dep Module) {
		if isInstallDepNeeded(dep, ctx.OtherModuleDependencyTag(dep)) {
			// Installation is still handled by Make, so anything hidden from Make is not
			// installable.
			if !dep.IsHideFromMake() && !dep.IsSkipInstall() {
				installDeps = append(installDeps, dep.base().installFilesDepSet)
			}
			// Add packaging deps even when the dependency is not installed so that uninstallable
			// modules can still be packaged.  Often the package will be installed instead.
			packagingSpecs = append(packagingSpecs, dep.base().packagingSpecsDepSet)
		}
	})

	return installDeps, packagingSpecs
}

// isInstallDepNeeded returns true if installing the output files of the current module
// should also install the output files of the given dependency and dependency tag.
func isInstallDepNeeded(dep Module, tag blueprint.DependencyTag) bool {
	// Don't add a dependency from the platform to a library provided by an apex.
	if dep.base().commonProperties.UninstallableApexPlatformVariant {
		return false
	}
	// Only install modules if the dependency tag is an InstallDepNeeded tag.
	return IsInstallDepNeededTag(tag)
}

func (m *ModuleBase) FilesToInstall() InstallPaths {
	return m.installFiles
}

func (m *ModuleBase) PackagingSpecs() []PackagingSpec {
	return m.packagingSpecs
}

func (m *ModuleBase) TransitivePackagingSpecs() []PackagingSpec {
	return m.packagingSpecsDepSet.ToList()
}

func (m *ModuleBase) NoAddressSanitizer() bool {
	return m.noAddressSanitizer
}

func (m *ModuleBase) InstallInData() bool {
	return false
}

func (m *ModuleBase) InstallInTestcases() bool {
	return false
}

func (m *ModuleBase) InstallInSanitizerDir() bool {
	return false
}

func (m *ModuleBase) InstallInRamdisk() bool {
	return Bool(m.commonProperties.Ramdisk)
}

func (m *ModuleBase) InstallInVendorRamdisk() bool {
	return Bool(m.commonProperties.Vendor_ramdisk)
}

func (m *ModuleBase) InstallInDebugRamdisk() bool {
	return Bool(m.commonProperties.Debug_ramdisk)
}

func (m *ModuleBase) InstallInRecovery() bool {
	return Bool(m.commonProperties.Recovery)
}

func (m *ModuleBase) InstallInVendor() bool {
	return Bool(m.commonProperties.Vendor) || Bool(m.commonProperties.Soc_specific) || Bool(m.commonProperties.Proprietary)
}

func (m *ModuleBase) InstallInRoot() bool {
	return false
}

func (m *ModuleBase) InstallForceOS() (*OsType, *ArchType) {
	return nil, nil
}

func (m *ModuleBase) Owner() string {
	return String(m.commonProperties.Owner)
}

func (m *ModuleBase) setImageVariation(variant string) {
	m.commonProperties.ImageVariation = variant
}

func (m *ModuleBase) ImageVariation() blueprint.Variation {
	return blueprint.Variation{
		Mutator:   "image",
		Variation: m.base().commonProperties.ImageVariation,
	}
}

func (m *ModuleBase) getVariationByMutatorName(mutator string) string {
	for i, v := range m.commonProperties.DebugMutators {
		if v == mutator {
			return m.commonProperties.DebugVariations[i]
		}
	}

	return ""
}

func (m *ModuleBase) InRamdisk() bool {
	return m.base().commonProperties.ImageVariation == RamdiskVariation
}

func (m *ModuleBase) InVendorRamdisk() bool {
	return m.base().commonProperties.ImageVariation == VendorRamdiskVariation
}

func (m *ModuleBase) InDebugRamdisk() bool {
	return m.base().commonProperties.ImageVariation == DebugRamdiskVariation
}

func (m *ModuleBase) InRecovery() bool {
	return m.base().commonProperties.ImageVariation == RecoveryVariation
}

func (m *ModuleBase) RequiredModuleNames() []string {
	return m.base().commonProperties.Required
}

func (m *ModuleBase) HostRequiredModuleNames() []string {
	return m.base().commonProperties.Host_required
}

func (m *ModuleBase) TargetRequiredModuleNames() []string {
	return m.base().commonProperties.Target_required
}

func (m *ModuleBase) InitRc() Paths {
	return append(Paths{}, m.initRcPaths...)
}

func (m *ModuleBase) VintfFragments() Paths {
	return append(Paths{}, m.vintfFragmentsPaths...)
}

func (m *ModuleBase) CompileMultilib() *string {
	return m.base().commonProperties.Compile_multilib
}

// SetLicenseInstallMap stores the set of dependency module:location mappings for files in an
// apex container for use when generation the license metadata file.
func (m *ModuleBase) SetLicenseInstallMap(installMap []string) {
	m.licenseInstallMap = append(m.licenseInstallMap, installMap...)
}

func (m *ModuleBase) generateModuleTarget(ctx ModuleContext) {
	var allInstalledFiles InstallPaths
	var allCheckbuildFiles Paths
	ctx.VisitAllModuleVariants(func(module Module) {
		a := module.base()
		allInstalledFiles = append(allInstalledFiles, a.installFiles...)
		// A module's -checkbuild phony targets should
		// 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) {
			allCheckbuildFiles = append(allCheckbuildFiles, a.checkbuildFiles...)
		}
	})

	var deps Paths

	namespacePrefix := ctx.Namespace().id
	if namespacePrefix != "" {
		namespacePrefix = namespacePrefix + "-"
	}

	if len(allInstalledFiles) > 0 {
		name := namespacePrefix + ctx.ModuleName() + "-install"
		ctx.Phony(name, allInstalledFiles.Paths()...)
		m.installTarget = PathForPhony(ctx, name)
		deps = append(deps, m.installTarget)
	}

	if len(allCheckbuildFiles) > 0 {
		name := namespacePrefix + ctx.ModuleName() + "-checkbuild"
		ctx.Phony(name, allCheckbuildFiles...)
		m.checkbuildTarget = PathForPhony(ctx, name)
		deps = append(deps, m.checkbuildTarget)
	}

	if len(deps) > 0 {
		suffix := ""
		if ctx.Config().KatiEnabled() {
			suffix = "-soong"
		}

		ctx.Phony(namespacePrefix+ctx.ModuleName()+suffix, deps...)

		m.blueprintDir = ctx.ModuleDir()
	}
}

func determineModuleKind(m *ModuleBase, ctx blueprint.EarlyModuleContext) moduleKind {
	var socSpecific = Bool(m.commonProperties.Vendor) || Bool(m.commonProperties.Proprietary) || Bool(m.commonProperties.Soc_specific)
	var deviceSpecific = Bool(m.commonProperties.Device_specific)
	var productSpecific = Bool(m.commonProperties.Product_specific)
	var systemExtSpecific = Bool(m.commonProperties.System_ext_specific)

	msg := "conflicting value set here"
	if socSpecific && deviceSpecific {
		ctx.PropertyErrorf("device_specific", "a module cannot be specific to SoC and device at the same time.")
		if Bool(m.commonProperties.Vendor) {
			ctx.PropertyErrorf("vendor", msg)
		}
		if Bool(m.commonProperties.Proprietary) {
			ctx.PropertyErrorf("proprietary", msg)
		}
		if Bool(m.commonProperties.Soc_specific) {
			ctx.PropertyErrorf("soc_specific", msg)
		}
	}

	if productSpecific && systemExtSpecific {
		ctx.PropertyErrorf("product_specific", "a module cannot be specific to product and system_ext at the same time.")
		ctx.PropertyErrorf("system_ext_specific", msg)
	}

	if (socSpecific || deviceSpecific) && (productSpecific || systemExtSpecific) {
		if productSpecific {
			ctx.PropertyErrorf("product_specific", "a module cannot be specific to SoC or device and product at the same time.")
		} else {
			ctx.PropertyErrorf("system_ext_specific", "a module cannot be specific to SoC or device and system_ext at the same time.")
		}
		if deviceSpecific {
			ctx.PropertyErrorf("device_specific", msg)
		} else {
			if Bool(m.commonProperties.Vendor) {
				ctx.PropertyErrorf("vendor", msg)
			}
			if Bool(m.commonProperties.Proprietary) {
				ctx.PropertyErrorf("proprietary", msg)
			}
			if Bool(m.commonProperties.Soc_specific) {
				ctx.PropertyErrorf("soc_specific", msg)
			}
		}
	}

	if productSpecific {
		return productSpecificModule
	} else if systemExtSpecific {
		return systemExtSpecificModule
	} else if deviceSpecific {
		return deviceSpecificModule
	} else if socSpecific {
		return socSpecificModule
	} else {
		return platformModule
	}
}

func (m *ModuleBase) earlyModuleContextFactory(ctx blueprint.EarlyModuleContext) earlyModuleContext {
	return earlyModuleContext{
		EarlyModuleContext: ctx,
		kind:               determineModuleKind(m, ctx),
		config:             ctx.Config().(Config),
	}
}

func (m *ModuleBase) baseModuleContextFactory(ctx blueprint.BaseModuleContext) baseModuleContext {
	return baseModuleContext{
		bp:                 ctx,
		earlyModuleContext: m.earlyModuleContextFactory(ctx),
		os:                 m.commonProperties.CompileOS,
		target:             m.commonProperties.CompileTarget,
		targetPrimary:      m.commonProperties.CompilePrimary,
		multiTargets:       m.commonProperties.CompileMultiTargets,
	}
}

func (m *ModuleBase) GenerateBuildActions(blueprintCtx blueprint.ModuleContext) {
	ctx := &moduleContext{
		module:            m.module,
		bp:                blueprintCtx,
		baseModuleContext: m.baseModuleContextFactory(blueprintCtx),
		variables:         make(map[string]string),
	}

	m.licenseMetadataFile = PathForModuleOut(ctx, "meta_lic")

	dependencyInstallFiles, dependencyPackagingSpecs := m.computeInstallDeps(ctx)
	// set m.installFilesDepSet to only the transitive dependencies to be used as the dependencies
	// of installed files of this module.  It will be replaced by a depset including the installed
	// files of this module at the end for use by modules that depend on this one.
	m.installFilesDepSet = NewDepSet[InstallPath](TOPOLOGICAL, nil, dependencyInstallFiles)

	// Temporarily continue to call blueprintCtx.GetMissingDependencies() to maintain the previous behavior of never
	// reporting missing dependency errors in Blueprint when AllowMissingDependencies == true.
	// TODO: This will be removed once defaults modules handle missing dependency errors
	blueprintCtx.GetMissingDependencies()

	// For the final GenerateAndroidBuildActions pass, require that all visited dependencies Soong modules and
	// are enabled. Unless the module is a CommonOS variant which may have dependencies on disabled variants
	// (because the dependencies are added before the modules are disabled). The
	// GetOsSpecificVariantsOfCommonOSVariant(...) method will ensure that the disabled variants are
	// ignored.
	ctx.baseModuleContext.strictVisitDeps = !m.IsCommonOSVariant()

	if ctx.config.captureBuild {
		ctx.ruleParams = make(map[blueprint.Rule]blueprint.RuleParams)
	}

	desc := "//" + ctx.ModuleDir() + ":" + ctx.ModuleName() + " "
	var suffix []string
	if ctx.Os().Class != Device && ctx.Os().Class != Generic {
		suffix = append(suffix, ctx.Os().String())
	}
	if !ctx.PrimaryArch() {
		suffix = append(suffix, ctx.Arch().ArchType.String())
	}
	if apexInfo, _ := ModuleProvider(ctx, ApexInfoProvider); !apexInfo.IsForPlatform() {
		suffix = append(suffix, apexInfo.ApexVariationName)
	}

	ctx.Variable(pctx, "moduleDesc", desc)

	s := ""
	if len(suffix) > 0 {
		s = " [" + strings.Join(suffix, " ") + "]"
	}
	ctx.Variable(pctx, "moduleDescSuffix", s)

	// Some common property checks for properties that will be used later in androidmk.go
	checkDistProperties(ctx, "dist", &m.distProperties.Dist)
	for i := range m.distProperties.Dists {
		checkDistProperties(ctx, fmt.Sprintf("dists[%d]", i), &m.distProperties.Dists[i])
	}

	if m.Enabled() {
		// ensure all direct android.Module deps are enabled
		ctx.VisitDirectDepsBlueprint(func(bm blueprint.Module) {
			if m, ok := bm.(Module); ok {
				ctx.validateAndroidModule(bm, ctx.OtherModuleDependencyTag(m), ctx.baseModuleContext.strictVisitDeps)
			}
		})

		licensesPropertyFlattener(ctx)
		if ctx.Failed() {
			return
		}

		m.module.GenerateAndroidBuildActions(ctx)
		if ctx.Failed() {
			return
		}

		m.initRcPaths = PathsForModuleSrc(ctx, m.commonProperties.Init_rc)
		rcDir := PathForModuleInstall(ctx, "etc", "init")
		for _, src := range m.initRcPaths {
			ctx.PackageFile(rcDir, filepath.Base(src.String()), src)
		}

		m.vintfFragmentsPaths = PathsForModuleSrc(ctx, m.commonProperties.Vintf_fragments)
		vintfDir := PathForModuleInstall(ctx, "etc", "vintf", "manifest")
		for _, src := range m.vintfFragmentsPaths {
			ctx.PackageFile(vintfDir, filepath.Base(src.String()), src)
		}

		// Create the set of tagged dist files after calling GenerateAndroidBuildActions
		// as GenerateTaggedDistFiles() calls OutputFiles(tag) and so relies on the
		// output paths being set which must be done before or during
		// GenerateAndroidBuildActions.
		m.distFiles = m.GenerateTaggedDistFiles(ctx)
		if ctx.Failed() {
			return
		}

		m.installFiles = append(m.installFiles, ctx.installFiles...)
		m.checkbuildFiles = append(m.checkbuildFiles, ctx.checkbuildFiles...)
		m.packagingSpecs = append(m.packagingSpecs, ctx.packagingSpecs...)
		m.katiInstalls = append(m.katiInstalls, ctx.katiInstalls...)
		m.katiSymlinks = append(m.katiSymlinks, ctx.katiSymlinks...)
		m.testData = append(m.testData, ctx.testData...)
	} else if ctx.Config().AllowMissingDependencies() {
		// If the module is not enabled it will not create any build rules, nothing will call
		// ctx.GetMissingDependencies(), and blueprint will consider the missing dependencies to be unhandled
		// and report them as an error even when AllowMissingDependencies = true.  Call
		// ctx.GetMissingDependencies() here to tell blueprint not to handle them.
		ctx.GetMissingDependencies()
	}

	if m == ctx.FinalModule().(Module).base() {
		m.generateModuleTarget(ctx)
		if ctx.Failed() {
			return
		}
	}

	m.installFilesDepSet = NewDepSet[InstallPath](TOPOLOGICAL, m.installFiles, dependencyInstallFiles)
	m.packagingSpecsDepSet = NewDepSet[PackagingSpec](TOPOLOGICAL, m.packagingSpecs, dependencyPackagingSpecs)

	buildLicenseMetadata(ctx, m.licenseMetadataFile)

	m.buildParams = ctx.buildParams
	m.ruleParams = ctx.ruleParams
	m.variables = ctx.variables
}

// Check the supplied dist structure to make sure that it is valid.
//
// property - the base property, e.g. dist or dists[1], which is combined with the
// name of the nested property to produce the full property, e.g. dist.dest or
// dists[1].dir.
func checkDistProperties(ctx *moduleContext, property string, dist *Dist) {
	if dist.Dest != nil {
		_, err := validateSafePath(*dist.Dest)
		if err != nil {
			ctx.PropertyErrorf(property+".dest", "%s", err.Error())
		}
	}
	if dist.Dir != nil {
		_, err := validateSafePath(*dist.Dir)
		if err != nil {
			ctx.PropertyErrorf(property+".dir", "%s", err.Error())
		}
	}
	if dist.Suffix != nil {
		if strings.Contains(*dist.Suffix, "/") {
			ctx.PropertyErrorf(property+".suffix", "Suffix may not contain a '/' character.")
		}
	}

}

// katiInstall stores a request from Soong to Make to create an install rule.
type katiInstall struct {
	from          Path
	to            InstallPath
	implicitDeps  Paths
	orderOnlyDeps Paths
	executable    bool
	extraFiles    *extraFilesZip

	absFrom string
}

type extraFilesZip struct {
	zip Path
	dir InstallPath
}

type katiInstalls []katiInstall

// BuiltInstalled returns the katiInstalls in the form used by $(call copy-many-files) in Make, a
// space separated list of from:to tuples.
func (installs katiInstalls) BuiltInstalled() string {
	sb := strings.Builder{}
	for i, install := range installs {
		if i != 0 {
			sb.WriteRune(' ')
		}
		sb.WriteString(install.from.String())
		sb.WriteRune(':')
		sb.WriteString(install.to.String())
	}
	return sb.String()
}

// InstallPaths returns the install path of each entry.
func (installs katiInstalls) InstallPaths() InstallPaths {
	paths := make(InstallPaths, 0, len(installs))
	for _, install := range installs {
		paths = append(paths, install.to)
	}
	return paths
}

// Makes this module a platform module, i.e. not specific to soc, device,
// product, or system_ext.
func (m *ModuleBase) MakeAsPlatform() {
	m.commonProperties.Vendor = boolPtr(false)
	m.commonProperties.Proprietary = boolPtr(false)
	m.commonProperties.Soc_specific = boolPtr(false)
	m.commonProperties.Product_specific = boolPtr(false)
	m.commonProperties.System_ext_specific = boolPtr(false)
}

func (m *ModuleBase) MakeAsSystemExt() {
	m.commonProperties.Vendor = boolPtr(false)
	m.commonProperties.Proprietary = boolPtr(false)
	m.commonProperties.Soc_specific = boolPtr(false)
	m.commonProperties.Product_specific = boolPtr(false)
	m.commonProperties.System_ext_specific = boolPtr(true)
}

// IsNativeBridgeSupported returns true if "native_bridge_supported" is explicitly set as "true"
func (m *ModuleBase) IsNativeBridgeSupported() bool {
	return proptools.Bool(m.commonProperties.Native_bridge_supported)
}

// ModuleNameWithPossibleOverride returns the name of the OverrideModule that overrides the current
// variant of this OverridableModule, or ctx.ModuleName() if this module is not an OverridableModule
// or if this variant is not overridden.
func ModuleNameWithPossibleOverride(ctx BaseModuleContext) string {
	if overridable, ok := ctx.Module().(OverridableModule); ok {
		if o := overridable.GetOverriddenBy(); o != "" {
			return o
		}
	}
	return ctx.ModuleName()
}

// SrcIsModule decodes module references in the format ":unqualified-name" or "//namespace:name"
// into the module name, or empty string if the input was not a module reference.
func SrcIsModule(s string) (module string) {
	if len(s) > 1 {
		if s[0] == ':' {
			module = s[1:]
			if !isUnqualifiedModuleName(module) {
				// The module name should be unqualified but is not so do not treat it as a module.
				module = ""
			}
		} else if s[0] == '/' && s[1] == '/' {
			module = s
		}
	}
	return module
}

// SrcIsModuleWithTag decodes module references in the format ":unqualified-name{.tag}" or
// "//namespace:name{.tag}" into the module name and tag, ":unqualified-name" or "//namespace:name"
// into the module name and an empty string for the tag, or empty strings if the input was not a
// module reference.
func SrcIsModuleWithTag(s string) (module, tag string) {
	if len(s) > 1 {
		if s[0] == ':' {
			module = s[1:]
		} else if s[0] == '/' && s[1] == '/' {
			module = s
		}

		if module != "" {
			if tagStart := strings.IndexByte(module, '{'); tagStart > 0 {
				if module[len(module)-1] == '}' {
					tag = module[tagStart+1 : len(module)-1]
					module = module[:tagStart]
				}
			}

			if s[0] == ':' && !isUnqualifiedModuleName(module) {
				// The module name should be unqualified but is not so do not treat it as a module.
				module = ""
				tag = ""
			}
		}
	}

	return module, tag
}

// isUnqualifiedModuleName makes sure that the supplied module is an unqualified module name, i.e.
// does not contain any /.
func isUnqualifiedModuleName(module string) bool {
	return strings.IndexByte(module, '/') == -1
}

// sourceOrOutputDependencyTag is the dependency tag added automatically by pathDepsMutator for any
// module reference in a property annotated with `android:"path"` or passed to ExtractSourceDeps
// or ExtractSourcesDeps.
//
// If uniquely identifies the dependency that was added as it contains both the module name used to
// add the dependency as well as the tag. That makes it very simple to find the matching dependency
// in GetModuleFromPathDep as all it needs to do is find the dependency whose tag matches the tag
// used to add it. It does not need to check that the module name as returned by one of
// Module.Name(), BaseModuleContext.OtherModuleName() or ModuleBase.BaseModuleName() matches the
// name supplied in the tag. That means it does not need to handle differences in module names
// caused by prebuilt_ prefix, or fully qualified module names.
type sourceOrOutputDependencyTag struct {
	blueprint.BaseDependencyTag

	// The name of the module.
	moduleName string

	// The tag that will be passed to the module's OutputFileProducer.OutputFiles(tag) method.
	tag string
}

func sourceOrOutputDepTag(moduleName, tag string) blueprint.DependencyTag {
	return sourceOrOutputDependencyTag{moduleName: moduleName, tag: tag}
}

// IsSourceDepTagWithOutputTag returns true if the supplied blueprint.DependencyTag is one that was
// used to add dependencies by either ExtractSourceDeps, ExtractSourcesDeps or automatically for
// properties tagged with `android:"path"` AND it was added using a module reference of
// :moduleName{outputTag}.
func IsSourceDepTagWithOutputTag(depTag blueprint.DependencyTag, outputTag string) bool {
	t, ok := depTag.(sourceOrOutputDependencyTag)
	return ok && t.tag == outputTag
}

// Adds necessary dependencies to satisfy filegroup or generated sources modules listed in srcFiles
// using ":module" syntax, if any.
//
// Deprecated: tag the property with `android:"path"` instead.
func ExtractSourcesDeps(ctx BottomUpMutatorContext, srcFiles []string) {
	set := make(map[string]bool)

	for _, s := range srcFiles {
		if m, t := SrcIsModuleWithTag(s); m != "" {
			if _, found := set[s]; found {
				ctx.ModuleErrorf("found source dependency duplicate: %q!", s)
			} else {
				set[s] = true
				ctx.AddDependency(ctx.Module(), sourceOrOutputDepTag(m, t), m)
			}
		}
	}
}

// Adds necessary dependencies to satisfy filegroup or generated sources modules specified in s
// using ":module" syntax, if any.
//
// Deprecated: tag the property with `android:"path"` instead.
func ExtractSourceDeps(ctx BottomUpMutatorContext, s *string) {
	if s != nil {
		if m, t := SrcIsModuleWithTag(*s); m != "" {
			ctx.AddDependency(ctx.Module(), sourceOrOutputDepTag(m, t), m)
		}
	}
}

// A module that implements SourceFileProducer can be referenced from any property that is tagged with `android:"path"`
// using the ":module" syntax and provides a list of paths to be used as if they were listed in the property.
type SourceFileProducer interface {
	Srcs() Paths
}

// A module that implements OutputFileProducer can be referenced from any property that is tagged with `android:"path"`
// using the ":module" syntax or ":module{.tag}" syntax and provides a list of output files to be used as if they were
// listed in the property.
type OutputFileProducer interface {
	OutputFiles(tag string) (Paths, error)
}

// OutputFilesForModule returns the paths from an OutputFileProducer with the given tag.  On error, including if the
// module produced zero paths, it reports errors to the ctx and returns nil.
func OutputFilesForModule(ctx PathContext, module blueprint.Module, tag string) Paths {
	paths, err := outputFilesForModule(ctx, module, tag)
	if err != nil {
		reportPathError(ctx, err)
		return nil
	}
	return paths
}

// OutputFileForModule returns the path from an OutputFileProducer with the given tag.  On error, including if the
// module produced zero or multiple paths, it reports errors to the ctx and returns nil.
func OutputFileForModule(ctx PathContext, module blueprint.Module, tag string) Path {
	paths, err := outputFilesForModule(ctx, module, tag)
	if err != nil {
		reportPathError(ctx, err)
		return nil
	}
	if len(paths) == 0 {
		type addMissingDependenciesIntf interface {
			AddMissingDependencies([]string)
			OtherModuleName(blueprint.Module) string
		}
		if mctx, ok := ctx.(addMissingDependenciesIntf); ok && ctx.Config().AllowMissingDependencies() {
			mctx.AddMissingDependencies([]string{mctx.OtherModuleName(module)})
		} else {
			ReportPathErrorf(ctx, "failed to get output files from module %q", pathContextName(ctx, module))
		}
		// Return a fake output file to avoid nil dereferences of Path objects later.
		// This should never get used for an actual build as the error or missing
		// dependency has already been reported.
		p, err := pathForSource(ctx, filepath.Join("missing_output_file", pathContextName(ctx, module)))
		if err != nil {
			reportPathError(ctx, err)
			return nil
		}
		return p
	}
	if len(paths) > 1 {
		ReportPathErrorf(ctx, "got multiple output files from module %q, expected exactly one",
			pathContextName(ctx, module))
	}
	return paths[0]
}

func outputFilesForModule(ctx PathContext, module blueprint.Module, tag string) (Paths, error) {
	if outputFileProducer, ok := module.(OutputFileProducer); ok {
		paths, err := outputFileProducer.OutputFiles(tag)
		if err != nil {
			return nil, fmt.Errorf("failed to get output file from module %q: %s",
				pathContextName(ctx, module), err.Error())
		}
		return paths, nil
	} else if sourceFileProducer, ok := module.(SourceFileProducer); ok {
		if tag != "" {
			return nil, fmt.Errorf("module %q is a SourceFileProducer, not an OutputFileProducer, and so does not support tag %q", pathContextName(ctx, module), tag)
		}
		paths := sourceFileProducer.Srcs()
		return paths, nil
	} else {
		return nil, fmt.Errorf("module %q is not an OutputFileProducer", pathContextName(ctx, module))
	}
}

// Modules can implement HostToolProvider and return a valid OptionalPath from HostToolPath() to
// specify that they can be used as a tool by a genrule module.
type HostToolProvider interface {
	Module
	// HostToolPath returns the path to the host tool for the module if it is one, or an invalid
	// OptionalPath.
	HostToolPath() OptionalPath
}

func init() {
	RegisterParallelSingletonType("buildtarget", BuildTargetSingleton)
	RegisterParallelSingletonType("soongconfigtrace", soongConfigTraceSingletonFunc)
	FinalDepsMutators(registerSoongConfigTraceMutator)
}

func BuildTargetSingleton() Singleton {
	return &buildTargetSingleton{}
}

func parentDir(dir string) string {
	dir, _ = filepath.Split(dir)
	return filepath.Clean(dir)
}

type buildTargetSingleton struct{}

func AddAncestors(ctx SingletonContext, dirMap map[string]Paths, mmName func(string) string) ([]string, []string) {
	// Ensure ancestor directories are in dirMap
	// Make directories build their direct subdirectories
	// Returns a slice of all directories and a slice of top-level directories.
	dirs := SortedKeys(dirMap)
	for _, dir := range dirs {
		dir := parentDir(dir)
		for dir != "." && dir != "/" {
			if _, exists := dirMap[dir]; exists {
				break
			}
			dirMap[dir] = nil
			dir = parentDir(dir)
		}
	}
	dirs = SortedKeys(dirMap)
	var topDirs []string
	for _, dir := range dirs {
		p := parentDir(dir)
		if p != "." && p != "/" {
			dirMap[p] = append(dirMap[p], PathForPhony(ctx, mmName(dir)))
		} else if dir != "." && dir != "/" && dir != "" {
			topDirs = append(topDirs, dir)
		}
	}
	return SortedKeys(dirMap), topDirs
}

func (c *buildTargetSingleton) GenerateBuildActions(ctx SingletonContext) {
	var checkbuildDeps Paths

	mmTarget := func(dir string) string {
		return "MODULES-IN-" + strings.Replace(filepath.Clean(dir), "/", "-", -1)
	}

	modulesInDir := make(map[string]Paths)

	ctx.VisitAllModules(func(module Module) {
		blueprintDir := module.base().blueprintDir
		installTarget := module.base().installTarget
		checkbuildTarget := module.base().checkbuildTarget

		if checkbuildTarget != nil {
			checkbuildDeps = append(checkbuildDeps, checkbuildTarget)
			modulesInDir[blueprintDir] = append(modulesInDir[blueprintDir], checkbuildTarget)
		}

		if installTarget != nil {
			modulesInDir[blueprintDir] = append(modulesInDir[blueprintDir], installTarget)
		}
	})

	suffix := ""
	if ctx.Config().KatiEnabled() {
		suffix = "-soong"
	}

	// Create a top-level checkbuild target that depends on all modules
	ctx.Phony("checkbuild"+suffix, checkbuildDeps...)

	// Make will generate the MODULES-IN-* targets
	if ctx.Config().KatiEnabled() {
		return
	}

	dirs, _ := AddAncestors(ctx, modulesInDir, mmTarget)

	// Create a MODULES-IN-<directory> target that depends on all modules in a directory, and
	// depends on the MODULES-IN-* targets of all of its subdirectories that contain Android.bp
	// files.
	for _, dir := range dirs {
		ctx.Phony(mmTarget(dir), modulesInDir[dir]...)
	}

	// Create (host|host-cross|target)-<OS> phony rules to build a reduced checkbuild.
	type osAndCross struct {
		os        OsType
		hostCross bool
	}
	osDeps := map[osAndCross]Paths{}
	ctx.VisitAllModules(func(module Module) {
		if module.Enabled() {
			key := osAndCross{os: module.Target().Os, hostCross: module.Target().HostCross}
			osDeps[key] = append(osDeps[key], module.base().checkbuildFiles...)
		}
	})

	osClass := make(map[string]Paths)
	for key, deps := range osDeps {
		var className string

		switch key.os.Class {
		case Host:
			if key.hostCross {
				className = "host-cross"
			} else {
				className = "host"
			}
		case Device:
			className = "target"
		default:
			continue
		}

		name := className + "-" + key.os.Name
		osClass[className] = append(osClass[className], PathForPhony(ctx, name))

		ctx.Phony(name, deps...)
	}

	// Wrap those into host|host-cross|target phony rules
	for _, class := range SortedKeys(osClass) {
		ctx.Phony(class, osClass[class]...)
	}
}

// Collect information for opening IDE project files in java/jdeps.go.
type IDEInfo interface {
	IDEInfo(ideInfo *IdeInfo)
	BaseModuleName() string
}

// Extract the base module name from the Import name.
// Often the Import name has a prefix "prebuilt_".
// Remove the prefix explicitly if needed
// until we find a better solution to get the Import name.
type IDECustomizedModuleName interface {
	IDECustomizedModuleName() string
}

type IdeInfo struct {
	Deps              []string `json:"dependencies,omitempty"`
	Srcs              []string `json:"srcs,omitempty"`
	Aidl_include_dirs []string `json:"aidl_include_dirs,omitempty"`
	Jarjar_rules      []string `json:"jarjar_rules,omitempty"`
	Jars              []string `json:"jars,omitempty"`
	Classes           []string `json:"class,omitempty"`
	Installed_paths   []string `json:"installed,omitempty"`
	SrcJars           []string `json:"srcjars,omitempty"`
	Paths             []string `json:"path,omitempty"`
	Static_libs       []string `json:"static_libs,omitempty"`
	Libs              []string `json:"libs,omitempty"`
}

func CheckBlueprintSyntax(ctx BaseModuleContext, filename string, contents string) []error {
	bpctx := ctx.blueprintBaseModuleContext()
	return blueprint.CheckBlueprintSyntax(bpctx.ModuleFactories(), filename, contents)
}

func registerSoongConfigTraceMutator(ctx RegisterMutatorsContext) {
	ctx.BottomUp("soongconfigtrace", soongConfigTraceMutator).Parallel()
}

// soongConfigTraceMutator accumulates recorded soong_config trace from children. Also it normalizes
// SoongConfigTrace to make it consistent.
func soongConfigTraceMutator(ctx BottomUpMutatorContext) {
	trace := &ctx.Module().base().commonProperties.SoongConfigTrace
	ctx.VisitDirectDeps(func(m Module) {
		childTrace := &m.base().commonProperties.SoongConfigTrace
		trace.Bools = append(trace.Bools, childTrace.Bools...)
		trace.Strings = append(trace.Strings, childTrace.Strings...)
		trace.IsSets = append(trace.IsSets, childTrace.IsSets...)
	})
	trace.Bools = SortedUniqueStrings(trace.Bools)
	trace.Strings = SortedUniqueStrings(trace.Strings)
	trace.IsSets = SortedUniqueStrings(trace.IsSets)

	ctx.Module().base().commonProperties.SoongConfigTraceHash = trace.hash()
}

// soongConfigTraceSingleton writes a map from each module's config hash value to trace data.
func soongConfigTraceSingletonFunc() Singleton {
	return &soongConfigTraceSingleton{}
}

type soongConfigTraceSingleton struct {
}

func (s *soongConfigTraceSingleton) GenerateBuildActions(ctx SingletonContext) {
	outFile := PathForOutput(ctx, "soong_config_trace.json")

	traces := make(map[string]*soongConfigTrace)
	ctx.VisitAllModules(func(module Module) {
		trace := &module.base().commonProperties.SoongConfigTrace
		if !trace.isEmpty() {
			hash := module.base().commonProperties.SoongConfigTraceHash
			traces[hash] = trace
		}
	})

	j, err := json.Marshal(traces)
	if err != nil {
		ctx.Errorf("json marshal to %q failed: %#v", outFile, err)
		return
	}

	WriteFileRule(ctx, outFile, string(j))
	ctx.Phony("soong_config_trace", outFile)
}