com.android.builder.desugaring

Class DesugaringGraph

java.lang.Object

com.android.builder.desugaring.DesugaringGraph

public class DesugaringGraph
extends java.lang.Object

Class that keeps track of desugaring dependencies. Main goal of this class is to provide a set of paths that should be reprocessed, in addition to the set of class files whose content has changed.

It is built by combining DesugaringData, local desugaring dependencies, for all paths that are relevant. Once all data is added, for a path, a dependent set of paths can be calculated by traversing the graph in the following way:

• For the input path, get all types it contains. For .class file this will be a single type, for .jar it will be multiple.
• For every type T, from the previous step, find the set of dependent types. These are the types whose desugaring output depends on T.
• Once the set of dependent types is known, paths that define them are found, and that is the resulting set of paths.

Field Summary

Fields

Modifier and Type	Field and Description
static DesugaringGraph	EMPTY

Method Summary

Modifier and Type	Method and Description
java.util.Set<java.nio.file.Path>	getDependenciesPaths(java.nio.file.Path path) Returns a set of paths the given path is depending on.
java.util.Set<java.nio.file.Path>	getDependentPaths(java.nio.file.Path path) Returns a set of paths that should be additionally processed, based on the changed input path.
void	update(java.util.Collection<DesugaringData> data) Initializes or updates the graph with the new data.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EMPTY

@NonNull
public static final DesugaringGraph EMPTY

Method Detail

update

public void update(@NonNull
                   java.util.Collection<DesugaringData> data)

Initializes or updates the graph with the new data.

getDependenciesPaths

@NonNull
public java.util.Set<java.nio.file.Path> getDependenciesPaths(@NonNull
                                                                       java.nio.file.Path path)

Returns a set of paths the given path is depending on.

getDependentPaths

@NonNull
public java.util.Set<java.nio.file.Path> getDependentPaths(@NonNull
                                                                    java.nio.file.Path path)

Returns a set of paths that should be additionally processed, based on the changed input path.