com.facebook.buck.versions

Class TargetNodeTranslator

java.lang.Object

com.facebook.buck.versions.TargetNodeTranslator

public abstract class TargetNodeTranslator
extends Object

A helper class which uses reflection to translate BuildTargets in TargetNodes. The API methods use an Optional for their return types, so that Optional.empty() can be used to signify a translation was not needed. This may allow some translation functions to avoid copying or creating unnecessary new objects.

Constructor Summary

Constructors

Constructor and Description
TargetNodeTranslator(TypeCoercerFactory typeCoercerFactory, com.google.common.collect.ImmutableList<com.facebook.buck.versions.TargetTranslator<?>> translators, Cells cells)

Method Summary

Modifier and Type	Method and Description
abstract Optional<com.google.common.collect.ImmutableMap<BuildTarget,Version>>	getSelectedVersions(BuildTarget target)
<A> Optional<A>	translate(CellNameResolver cellNameResolver, BaseName targetBaseName, A object)
abstract Optional<BuildTarget>	translateBuildTarget(BuildTarget target)
<A extends ConstructorArg> Optional<TargetNode<A>>	translateNode(TargetNode<A> node)

Methods inherited from class java.lang.Object

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

Constructor Detail

TargetNodeTranslator

public TargetNodeTranslator(TypeCoercerFactory typeCoercerFactory,
                            com.google.common.collect.ImmutableList<com.facebook.buck.versions.TargetTranslator<?>> translators,
                            Cells cells)

Method Detail

translateBuildTarget

public abstract Optional<BuildTarget> translateBuildTarget(BuildTarget target)

getSelectedVersions

public abstract Optional<com.google.common.collect.ImmutableMap<BuildTarget,Version>> getSelectedVersions(BuildTarget target)

translate

public <A> Optional<A> translate(CellNameResolver cellNameResolver,
                                 BaseName targetBaseName,
                                 A object)

translateNode

public <A extends ConstructorArg> Optional<TargetNode<A>> translateNode(TargetNode<A> node)

Returns:

a copy of the given TargetNode with all found BuildTargets translated, or Optional.empty() if the node requires no translation.