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// Copyright (C) 2021 The Android Open Source Project
//
// 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 java
import (
"android/soong/android"
"github.com/google/blueprint"
)
// MonolithicHiddenAPIInfo contains information needed/provided by the hidden API generation of the
// monolithic hidden API files.
//
// Each list of paths includes all the equivalent paths from each of the bootclasspath_fragment
// modules that contribute to the platform-bootclasspath.
type MonolithicHiddenAPIInfo struct {
// FlagsFilesByCategory maps from the flag file category to the paths containing information for
// that category.
FlagsFilesByCategory FlagFilesByCategory
// The paths to the generated stub-flags.csv files.
StubFlagsPaths android.Paths
// The paths to the generated annotation-flags.csv files.
AnnotationFlagsPaths android.Paths
// The paths to the generated metadata.csv files.
MetadataPaths android.Paths
// The paths to the generated index.csv files.
IndexPaths android.Paths
// The paths to the generated all-flags.csv files.
AllFlagsPaths android.Paths
// The classes jars from the libraries on the platform bootclasspath.
ClassesJars android.Paths
}
// newMonolithicHiddenAPIInfo creates a new MonolithicHiddenAPIInfo from the flagFilesByCategory
// plus information provided by each of the fragments.
func newMonolithicHiddenAPIInfo(ctx android.ModuleContext, flagFilesByCategory FlagFilesByCategory, classpathElements ClasspathElements) MonolithicHiddenAPIInfo {
monolithicInfo := MonolithicHiddenAPIInfo{}
monolithicInfo.FlagsFilesByCategory = flagFilesByCategory
// Merge all the information from the classpathElements. The fragments form a DAG so it is possible that
// this will introduce duplicates so they will be resolved after processing all the classpathElements.
for _, element := range classpathElements {
var classesJars android.Paths
switch e := element.(type) {
case *ClasspathLibraryElement:
classesJars = retrieveClassesJarsFromModule(e.Module())
case *ClasspathFragmentElement:
fragment := e.Module()
if ctx.OtherModuleHasProvider(fragment, HiddenAPIInfoProvider) {
info := ctx.OtherModuleProvider(fragment, HiddenAPIInfoProvider).(HiddenAPIInfo)
monolithicInfo.append(&info)
// If the bootclasspath fragment actually perform hidden API processing itself then use the
// CSV files it provides and do not bother processing the classesJars files. This ensures
// consistent behavior between source and prebuilt as prebuilt modules do not provide
// classesJars.
if info.AllFlagsPath != nil {
continue
}
}
classesJars = extractClassesJarsFromModules(e.Contents)
}
monolithicInfo.ClassesJars = append(monolithicInfo.ClassesJars, classesJars...)
}
// Dedup paths.
monolithicInfo.dedup()
return monolithicInfo
}
// append appends all the files from the supplied info to the corresponding files in this struct.
func (i *MonolithicHiddenAPIInfo) append(other *HiddenAPIInfo) {
i.FlagsFilesByCategory.append(other.FlagFilesByCategory)
// The output may not be set if the bootclasspath_fragment has not yet been updated to support
// hidden API processing.
// TODO(b/179354495): Switch back to append once all bootclasspath_fragment modules have been
// updated to support hidden API processing properly.
appendIfNotNil := func(paths android.Paths, path android.Path) android.Paths {
if path == nil {
return paths
}
return append(paths, path)
}
i.StubFlagsPaths = appendIfNotNil(i.StubFlagsPaths, other.StubFlagsPath)
i.AnnotationFlagsPaths = appendIfNotNil(i.AnnotationFlagsPaths, other.AnnotationFlagsPath)
i.MetadataPaths = appendIfNotNil(i.MetadataPaths, other.MetadataPath)
i.IndexPaths = appendIfNotNil(i.IndexPaths, other.IndexPath)
i.AllFlagsPaths = appendIfNotNil(i.AllFlagsPaths, other.AllFlagsPath)
}
// dedup removes duplicates in all the paths, while maintaining the order in which they were
// appended.
func (i *MonolithicHiddenAPIInfo) dedup() {
i.FlagsFilesByCategory.dedup()
i.StubFlagsPaths = android.FirstUniquePaths(i.StubFlagsPaths)
i.AnnotationFlagsPaths = android.FirstUniquePaths(i.AnnotationFlagsPaths)
i.MetadataPaths = android.FirstUniquePaths(i.MetadataPaths)
i.IndexPaths = android.FirstUniquePaths(i.IndexPaths)
i.AllFlagsPaths = android.FirstUniquePaths(i.AllFlagsPaths)
}
var MonolithicHiddenAPIInfoProvider = blueprint.NewProvider(MonolithicHiddenAPIInfo{})
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