| // Copyright 2017 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 ( |
| "encoding/json" |
| "fmt" |
| "strconv" |
| |
| "android/soong/bazel" |
| "android/soong/starlark_fmt" |
| ) |
| |
| func init() { |
| RegisterSingletonType("api_levels", ApiLevelsSingleton) |
| } |
| |
| const previewAPILevelBase = 9000 |
| |
| // An API level, which may be a finalized (numbered) API, a preview (codenamed) |
| // API, or the future API level (10000). Can be parsed from a string with |
| // ApiLevelFromUser or ApiLevelOrPanic. |
| // |
| // The different *types* of API levels are handled separately. Currently only |
| // Java has these, and they're managed with the SdkKind enum of the SdkSpec. A |
| // future cleanup should be to migrate SdkSpec to using ApiLevel instead of its |
| // SdkVersion int, and to move SdkSpec into this package. |
| type ApiLevel struct { |
| // The string representation of the API level. |
| value string |
| |
| // A number associated with the API level. The exact value depends on |
| // whether this API level is a preview or final API. |
| // |
| // For final API levels, this is the assigned version number. |
| // |
| // For preview API levels, this value has no meaning except to index known |
| // previews to determine ordering. |
| number int |
| |
| // Identifies this API level as either a preview or final API level. |
| isPreview bool |
| } |
| |
| func (this ApiLevel) FinalInt() int { |
| if this.IsPreview() { |
| panic("Requested a final int from a non-final ApiLevel") |
| } else { |
| return this.number |
| } |
| } |
| |
| func (this ApiLevel) FinalOrFutureInt() int { |
| if this.IsPreview() { |
| return FutureApiLevelInt |
| } else { |
| return this.number |
| } |
| } |
| |
| // FinalOrPreviewInt distinguishes preview versions from "current" (future). |
| // This is for "native" stubs and should be in sync with ndkstubgen/getApiLevelsMap(). |
| // - "current" -> future (10000) |
| // - preview codenames -> preview base (9000) + index |
| // - otherwise -> cast to int |
| func (this ApiLevel) FinalOrPreviewInt() int { |
| if this.IsCurrent() { |
| return this.number |
| } |
| if this.IsPreview() { |
| return previewAPILevelBase + this.number |
| } |
| return this.number |
| } |
| |
| // Returns the canonical name for this API level. For a finalized API level |
| // this will be the API number as a string. For a preview API level this |
| // will be the codename, or "current". |
| func (this ApiLevel) String() string { |
| return this.value |
| } |
| |
| // Returns true if this is a non-final API level. |
| func (this ApiLevel) IsPreview() bool { |
| return this.isPreview |
| } |
| |
| // Returns true if this is the unfinalized "current" API level. This means |
| // different things across Java and native. Java APIs do not use explicit |
| // codenames, so all non-final codenames are grouped into "current". For native |
| // explicit codenames are typically used, and current is the union of all |
| // non-final APIs, including those that may not yet be in any codename. |
| // |
| // Note that in a build where the platform is final, "current" will not be a |
| // preview API level but will instead be canonicalized to the final API level. |
| func (this ApiLevel) IsCurrent() bool { |
| return this.value == "current" |
| } |
| |
| func (this ApiLevel) IsNone() bool { |
| return this.number == -1 |
| } |
| |
| // Returns -1 if the current API level is less than the argument, 0 if they |
| // are equal, and 1 if it is greater than the argument. |
| func (this ApiLevel) CompareTo(other ApiLevel) int { |
| if this.IsPreview() && !other.IsPreview() { |
| return 1 |
| } else if !this.IsPreview() && other.IsPreview() { |
| return -1 |
| } |
| |
| if this.number < other.number { |
| return -1 |
| } else if this.number == other.number { |
| return 0 |
| } else { |
| return 1 |
| } |
| } |
| |
| func (this ApiLevel) EqualTo(other ApiLevel) bool { |
| return this.CompareTo(other) == 0 |
| } |
| |
| func (this ApiLevel) GreaterThan(other ApiLevel) bool { |
| return this.CompareTo(other) > 0 |
| } |
| |
| func (this ApiLevel) GreaterThanOrEqualTo(other ApiLevel) bool { |
| return this.CompareTo(other) >= 0 |
| } |
| |
| func (this ApiLevel) LessThan(other ApiLevel) bool { |
| return this.CompareTo(other) < 0 |
| } |
| |
| func (this ApiLevel) LessThanOrEqualTo(other ApiLevel) bool { |
| return this.CompareTo(other) <= 0 |
| } |
| |
| func uncheckedFinalApiLevel(num int) ApiLevel { |
| return ApiLevel{ |
| value: strconv.Itoa(num), |
| number: num, |
| isPreview: false, |
| } |
| } |
| |
| var NoneApiLevel = ApiLevel{ |
| value: "(no version)", |
| // Not 0 because we don't want this to compare equal with the first preview. |
| number: -1, |
| isPreview: true, |
| } |
| |
| // The first version that introduced 64-bit ABIs. |
| var FirstLp64Version = uncheckedFinalApiLevel(21) |
| |
| // Android has had various kinds of packed relocations over the years |
| // (http://b/187907243). |
| // |
| // API level 30 is where the now-standard SHT_RELR is available. |
| var FirstShtRelrVersion = uncheckedFinalApiLevel(30) |
| |
| // API level 28 introduced SHT_RELR when it was still Android-only, and used an |
| // Android-specific relocation. |
| var FirstAndroidRelrVersion = uncheckedFinalApiLevel(28) |
| |
| // API level 23 was when we first had the Chrome relocation packer, which is |
| // obsolete and has been removed, but lld can now generate compatible packed |
| // relocations itself. |
| var FirstPackedRelocationsVersion = uncheckedFinalApiLevel(23) |
| |
| // The first API level that does not require NDK code to link |
| // libandroid_support. |
| var FirstNonLibAndroidSupportVersion = uncheckedFinalApiLevel(21) |
| |
| // LastWithoutModuleLibCoreSystemModules is the last API level where prebuilts/sdk does not contain |
| // a core-for-system-modules.jar for the module-lib API scope. |
| var LastWithoutModuleLibCoreSystemModules = uncheckedFinalApiLevel(31) |
| |
| // ReplaceFinalizedCodenames returns the API level number associated with that API level |
| // if the `raw` input is the codename of an API level has been finalized. |
| // If the input is *not* a finalized codename, the input is returned unmodified. |
| func ReplaceFinalizedCodenames(config Config, raw string) string { |
| num, ok := getFinalCodenamesMap(config)[raw] |
| if !ok { |
| return raw |
| } |
| |
| return strconv.Itoa(num) |
| } |
| |
| // ApiLevelFromUser converts the given string `raw` to an ApiLevel, possibly returning an error. |
| // |
| // `raw` must be non-empty. Passing an empty string results in a panic. |
| // |
| // "current" will return CurrentApiLevel, which is the ApiLevel associated with |
| // an arbitrary future release (often referred to as API level 10000). |
| // |
| // Finalized codenames will be interpreted as their final API levels, not the |
| // preview of the associated releases. R is now API 30, not the R preview. |
| // |
| // Future codenames return a preview API level that has no associated integer. |
| // |
| // Inputs that are not "current", known previews, or convertible to an integer |
| // will return an error. |
| func ApiLevelFromUser(ctx PathContext, raw string) (ApiLevel, error) { |
| return ApiLevelFromUserWithConfig(ctx.Config(), raw) |
| } |
| |
| // ApiLevelFromUserWithConfig implements ApiLevelFromUser, see comments for |
| // ApiLevelFromUser for more details. |
| func ApiLevelFromUserWithConfig(config Config, raw string) (ApiLevel, error) { |
| if raw == "" { |
| panic("API level string must be non-empty") |
| } |
| |
| if raw == "current" { |
| return FutureApiLevel, nil |
| } |
| |
| for _, preview := range config.PreviewApiLevels() { |
| if raw == preview.String() { |
| return preview, nil |
| } |
| } |
| |
| canonical := ReplaceFinalizedCodenames(config, raw) |
| asInt, err := strconv.Atoi(canonical) |
| if err != nil { |
| return NoneApiLevel, fmt.Errorf("%q could not be parsed as an integer and is not a recognized codename", canonical) |
| } |
| |
| apiLevel := uncheckedFinalApiLevel(asInt) |
| return apiLevel, nil |
| } |
| |
| // ApiLevelForTest returns an ApiLevel constructed from the supplied raw string. |
| // |
| // This only supports "current" and numeric levels, code names are not supported. |
| func ApiLevelForTest(raw string) ApiLevel { |
| if raw == "" { |
| panic("API level string must be non-empty") |
| } |
| |
| if raw == "current" { |
| return FutureApiLevel |
| } |
| |
| asInt, err := strconv.Atoi(raw) |
| if err != nil { |
| panic(fmt.Errorf("%q could not be parsed as an integer and is not a recognized codename", raw)) |
| } |
| |
| apiLevel := uncheckedFinalApiLevel(asInt) |
| return apiLevel |
| } |
| |
| // Converts an API level string `raw` into an ApiLevel in the same method as |
| // `ApiLevelFromUser`, but the input is assumed to have no errors and any errors |
| // will panic instead of returning an error. |
| func ApiLevelOrPanic(ctx PathContext, raw string) ApiLevel { |
| value, err := ApiLevelFromUser(ctx, raw) |
| if err != nil { |
| panic(err.Error()) |
| } |
| return value |
| } |
| |
| func ApiLevelsSingleton() Singleton { |
| return &apiLevelsSingleton{} |
| } |
| |
| type apiLevelsSingleton struct{} |
| |
| func createApiLevelsJson(ctx SingletonContext, file WritablePath, |
| apiLevelsMap map[string]int) { |
| |
| jsonStr, err := json.Marshal(apiLevelsMap) |
| if err != nil { |
| ctx.Errorf(err.Error()) |
| } |
| |
| WriteFileRule(ctx, file, string(jsonStr)) |
| } |
| |
| func GetApiLevelsJson(ctx PathContext) WritablePath { |
| return PathForOutput(ctx, "api_levels.json") |
| } |
| |
| func getApiLevelsMapReleasedVersions() map[string]int { |
| return map[string]int{ |
| "G": 9, |
| "I": 14, |
| "J": 16, |
| "J-MR1": 17, |
| "J-MR2": 18, |
| "K": 19, |
| "L": 21, |
| "L-MR1": 22, |
| "M": 23, |
| "N": 24, |
| "N-MR1": 25, |
| "O": 26, |
| "O-MR1": 27, |
| "P": 28, |
| "Q": 29, |
| "R": 30, |
| "S": 31, |
| "S-V2": 32, |
| "Tiramisu": 33, |
| } |
| } |
| |
| var finalCodenamesMapKey = NewOnceKey("FinalCodenamesMap") |
| |
| func getFinalCodenamesMap(config Config) map[string]int { |
| return config.Once(finalCodenamesMapKey, func() interface{} { |
| apiLevelsMap := getApiLevelsMapReleasedVersions() |
| |
| // TODO: Differentiate "current" and "future". |
| // The code base calls it FutureApiLevel, but the spelling is "current", |
| // and these are really two different things. When defining APIs it |
| // means the API has not yet been added to a specific release. When |
| // choosing an API level to build for it means that the future API level |
| // should be used, except in the case where the build is finalized in |
| // which case the platform version should be used. This is *weird*, |
| // because in the circumstance where API foo was added in R and bar was |
| // added in S, both of these are usable when building for "current" when |
| // neither R nor S are final, but the S APIs stop being available in a |
| // final R build. |
| if Bool(config.productVariables.Platform_sdk_final) { |
| apiLevelsMap["current"] = config.PlatformSdkVersion().FinalOrFutureInt() |
| } |
| |
| return apiLevelsMap |
| }).(map[string]int) |
| } |
| |
| var apiLevelsMapKey = NewOnceKey("ApiLevelsMap") |
| |
| // ApiLevelsMap has entries for preview API levels |
| func GetApiLevelsMap(config Config) map[string]int { |
| return config.Once(apiLevelsMapKey, func() interface{} { |
| apiLevelsMap := getApiLevelsMapReleasedVersions() |
| for i, codename := range config.PlatformVersionActiveCodenames() { |
| apiLevelsMap[codename] = previewAPILevelBase + i |
| } |
| |
| return apiLevelsMap |
| }).(map[string]int) |
| } |
| |
| func (a *apiLevelsSingleton) GenerateBuildActions(ctx SingletonContext) { |
| apiLevelsMap := GetApiLevelsMap(ctx.Config()) |
| apiLevelsJson := GetApiLevelsJson(ctx) |
| createApiLevelsJson(ctx, apiLevelsJson, apiLevelsMap) |
| } |
| |
| func StarlarkApiLevelConfigs(config Config) string { |
| return fmt.Sprintf(bazel.GeneratedBazelFileWarning+` |
| _api_levels_released_versions = %s |
| |
| api_levels_released_versions = _api_levels_released_versions |
| `, starlark_fmt.PrintStringIntDict(getApiLevelsMapReleasedVersions(), 0), |
| ) |
| } |