SdkSpec = Scope + ApiLevel

SdkSpec.Version was an int type. Now it becomes ApiLevel type which
is a better abstraction of the version (or api level).

Bug: 1655587
Test: m

Change-Id: I4d67b9b9eae45f653b6af4f5b73da9e091b3dfab
diff --git a/java/android_manifest.go b/java/android_manifest.go
index 6b7395b..8510f30 100644
--- a/java/android_manifest.go
+++ b/java/android_manifest.go
@@ -55,7 +55,7 @@
 		if err != nil {
 			ctx.ModuleErrorf("invalid minSdkVersion: %s", err)
 		}
-		if minSdkVersion >= 23 {
+		if minSdkVersion.FinalOrFutureInt() >= 23 {
 			args = append(args, fmt.Sprintf("--extract-native-libs=%v", !useEmbeddedNativeLibs))
 		} else if useEmbeddedNativeLibs {
 			ctx.ModuleErrorf("module attempted to store uncompressed native libraries, but minSdkVersion=%d doesn't support it",
diff --git a/java/app.go b/java/app.go
index ec30b49..dcb3bc6 100755
--- a/java/app.go
+++ b/java/app.go
@@ -288,7 +288,7 @@
 
 		if minSdkVersion, err := a.MinSdkVersion().EffectiveVersion(ctx); err == nil {
 			a.checkJniLibsSdkVersion(ctx, minSdkVersion)
-			android.CheckMinSdkVersion(a, ctx, minSdkVersion.ApiLevel(ctx))
+			android.CheckMinSdkVersion(a, ctx, minSdkVersion)
 		} else {
 			ctx.PropertyErrorf("min_sdk_version", "%s", err.Error())
 		}
@@ -304,7 +304,7 @@
 // because, sdk_version is overridden by min_sdk_version (if set as smaller)
 // and sdkLinkType is checked with dependencies so we can be sure that the whole dependency tree
 // will meet the requirements.
-func (a *AndroidApp) checkJniLibsSdkVersion(ctx android.ModuleContext, minSdkVersion android.SdkVersion) {
+func (a *AndroidApp) checkJniLibsSdkVersion(ctx android.ModuleContext, minSdkVersion android.ApiLevel) {
 	// It's enough to check direct JNI deps' sdk_version because all transitive deps from JNI deps are checked in cc.checkLinkType()
 	ctx.VisitDirectDeps(func(m android.Module) {
 		if !IsJniDepTag(ctx.OtherModuleDependencyTag(m)) {
@@ -315,7 +315,7 @@
 		// We can rely on android.SdkSpec to convert it to <number> so that "current" is
 		// handled properly regardless of sdk finalization.
 		jniSdkVersion, err := android.SdkSpecFrom(dep.SdkVersion()).EffectiveVersion(ctx)
-		if err != nil || minSdkVersion < jniSdkVersion {
+		if err != nil || minSdkVersion.LessThan(jniSdkVersion) {
 			ctx.OtherModuleErrorf(dep, "sdk_version(%v) is higher than min_sdk_version(%v) of the containing android_app(%v)",
 				dep.SdkVersion(), minSdkVersion, ctx.ModuleName())
 			return
@@ -333,7 +333,7 @@
 	}
 
 	apexInfo := ctx.Provider(android.ApexInfoProvider).(android.ApexInfo)
-	return (minSdkVersion >= 23 && Bool(a.appProperties.Use_embedded_native_libs)) ||
+	return (minSdkVersion.FinalOrFutureInt() >= 23 && Bool(a.appProperties.Use_embedded_native_libs)) ||
 		!apexInfo.IsForPlatform()
 }
 
diff --git a/java/base.go b/java/base.go
index 73e5352..9bc0738 100644
--- a/java/base.go
+++ b/java/base.go
@@ -535,7 +535,7 @@
 }
 
 func (j *Module) MinSdkVersionString() string {
-	return j.MinSdkVersion().Version.String()
+	return j.MinSdkVersion().ApiLevel.String()
 }
 
 func (j *Module) AvailableFor(what string) bool {
@@ -1255,7 +1255,7 @@
 
 	if ctx.Device() {
 		lintSDKVersionString := func(sdkSpec android.SdkSpec) string {
-			if v := sdkSpec.Version; v.IsNumbered() {
+			if v := sdkSpec.ApiLevel; !v.IsPreview() {
 				return v.String()
 			} else {
 				return ctx.Config().DefaultAppTargetSdk(ctx).String()
@@ -1482,7 +1482,7 @@
 	if err != nil {
 		return err
 	}
-	if ver.ApiLevel(ctx).GreaterThan(sdkVersion) {
+	if ver.GreaterThan(sdkVersion) {
 		return fmt.Errorf("newer SDK(%v)", ver)
 	}
 	return nil
diff --git a/java/dex.go b/java/dex.go
index 5c6d41d..7898e9d 100644
--- a/java/dex.go
+++ b/java/dex.go
@@ -15,6 +15,7 @@
 package java
 
 import (
+	"strconv"
 	"strings"
 
 	"github.com/google/blueprint"
@@ -179,7 +180,7 @@
 		ctx.PropertyErrorf("min_sdk_version", "%s", err)
 	}
 
-	flags = append(flags, "--min-api "+effectiveVersion.AsNumberString())
+	flags = append(flags, "--min-api "+strconv.Itoa(effectiveVersion.FinalOrFutureInt()))
 	return flags
 }
 
diff --git a/java/java.go b/java/java.go
index 5fe8814..fa7c96e 100644
--- a/java/java.go
+++ b/java/java.go
@@ -1156,7 +1156,7 @@
 }
 
 func (j *Import) MinSdkVersionString() string {
-	return j.MinSdkVersion().Version.String()
+	return j.MinSdkVersion().ApiLevel.String()
 }
 
 func (j *Import) Prebuilt() *android.Prebuilt {
@@ -1370,7 +1370,7 @@
 	if err != nil {
 		return err
 	}
-	if ver.ApiLevel(ctx).GreaterThan(sdkVersion) {
+	if ver.GreaterThan(sdkVersion) {
 		return fmt.Errorf("newer SDK(%v)", ver)
 	}
 	return nil
diff --git a/java/sdk.go b/java/sdk.go
index b546ca0..f324b76 100644
--- a/java/sdk.go
+++ b/java/sdk.go
@@ -51,9 +51,9 @@
 	if err != nil {
 		ctx.PropertyErrorf("sdk_version", "%s", err)
 	}
-	if sdk <= 23 {
+	if sdk.FinalOrFutureInt() <= 23 {
 		return JAVA_VERSION_7
-	} else if sdk <= 29 {
+	} else if sdk.FinalOrFutureInt() <= 29 {
 		return JAVA_VERSION_8
 	} else {
 		return JAVA_VERSION_9
@@ -76,11 +76,11 @@
 	}
 
 	if sdkVersion.UsePrebuilt(ctx) {
-		dir := filepath.Join("prebuilts", "sdk", sdkVersion.Version.String(), sdkVersion.Kind.String())
+		dir := filepath.Join("prebuilts", "sdk", sdkVersion.ApiLevel.String(), sdkVersion.Kind.String())
 		jar := filepath.Join(dir, "android.jar")
 		// There's no aidl for other SDKs yet.
 		// TODO(77525052): Add aidl files for other SDKs too.
-		publicDir := filepath.Join("prebuilts", "sdk", sdkVersion.Version.String(), "public")
+		publicDir := filepath.Join("prebuilts", "sdk", sdkVersion.ApiLevel.String(), "public")
 		aidl := filepath.Join(publicDir, "framework.aidl")
 		jarPath := android.ExistentPathForSource(ctx, jar)
 		aidlPath := android.ExistentPathForSource(ctx, aidl)
@@ -89,7 +89,7 @@
 		if (!jarPath.Valid() || !aidlPath.Valid()) && ctx.Config().AllowMissingDependencies() {
 			return sdkDep{
 				invalidVersion: true,
-				bootclasspath:  []string{fmt.Sprintf("sdk_%s_%s_android", sdkVersion.Kind, sdkVersion.Version.String())},
+				bootclasspath:  []string{fmt.Sprintf("sdk_%s_%s_android", sdkVersion.Kind, sdkVersion.ApiLevel.String())},
 			}
 		}
 
@@ -105,7 +105,7 @@
 
 		var systemModules string
 		if defaultJavaLanguageVersion(ctx, sdkVersion).usesJavaModules() {
-			systemModules = "sdk_public_" + sdkVersion.Version.String() + "_system_modules"
+			systemModules = "sdk_public_" + sdkVersion.ApiLevel.String() + "_system_modules"
 		}
 
 		return sdkDep{
diff --git a/java/sdk_library.go b/java/sdk_library.go
index ebb2154..37b8d9f 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -817,7 +817,7 @@
 func (c *commonToSdkLibraryAndImport) selectHeaderJarsForSdkVersion(ctx android.BaseModuleContext, sdkVersion android.SdkSpec) android.Paths {
 
 	// If a specific numeric version has been requested then use prebuilt versions of the sdk.
-	if sdkVersion.Version.IsNumbered() {
+	if !sdkVersion.ApiLevel.IsPreview() {
 		return PrebuiltJars(ctx, c.moduleBase.BaseModuleName(), sdkVersion)
 	}
 
@@ -1466,15 +1466,15 @@
 }
 
 func PrebuiltJars(ctx android.BaseModuleContext, baseName string, s android.SdkSpec) android.Paths {
-	var ver android.SdkVersion
+	var ver android.ApiLevel
 	var kind android.SdkKind
 	if s.UsePrebuilt(ctx) {
-		ver = s.Version
+		ver = s.ApiLevel
 		kind = s.Kind
 	} else {
 		// We don't have prebuilt SDK for the specific sdkVersion.
 		// Instead of breaking the build, fallback to use "system_current"
-		ver = android.SdkVersionCurrent
+		ver = android.FutureApiLevel
 		kind = android.SdkSystem
 	}