Refactoring: optimize createDefaultSourceDirectorySet

This commit is contained in:
Alexey Tsvetkov
2016-03-16 16:24:09 +03:00
parent d1abc87857
commit 61090d7027
@@ -33,20 +33,22 @@ open class KotlinSourceSetImpl(displayName: String?, resolver: FileResolver?): K
}
}
private fun createDefaultSourceDirectorySet(name: String?, resolver: FileResolver?): DefaultSourceDirectorySet {
private val createDefaultSourceDirectorySet: (name: String?, resolver: FileResolver?) -> DefaultSourceDirectorySet = run {
val klass = DefaultSourceDirectorySet::class.java
val defaultConstructor = klass.constructorOrNull(String::class.java, FileResolver::class.java)
if (defaultConstructor != null) {
return defaultConstructor.newInstance(name, resolver)
// TODO: drop when gradle < 2.12 are obsolete
{ name, resolver -> defaultConstructor.newInstance(name, resolver) }
}
else {
val directoryFileTreeFactoryClass = Class.forName("org.gradle.api.internal.file.collections.DirectoryFileTreeFactory")
val alternativeConstructor = klass.getConstructor(String::class.java, FileResolver::class.java, directoryFileTreeFactoryClass)
// TODO: we can move to 2.12 after AS 2 release and
// use fallback strategy instead (try to make call, catch NoSuchMethodException, use reflection to access old API)
val directoryFileTreeFactoryClass = Class.forName("org.gradle.api.internal.file.collections.DirectoryFileTreeFactory")
val defaultFileTreeFactoryClass = Class.forName("org.gradle.api.internal.file.collections.DefaultDirectoryFileTreeFactory")
val alternativeConstructor = klass.getConstructor(String::class.java, FileResolver::class.java, directoryFileTreeFactoryClass)
return alternativeConstructor.newInstance(name, resolver, defaultFileTreeFactoryClass.getConstructor().newInstance())
val defaultFileTreeFactoryClass = Class.forName("org.gradle.api.internal.file.collections.DefaultDirectoryFileTreeFactory")
val defaultFileTreeFactory = defaultFileTreeFactoryClass.getConstructor().newInstance()
return@run { name, resolver -> alternativeConstructor.newInstance(name, resolver, defaultFileTreeFactory) }
}
}
private fun <T> Class<T>.constructorOrNull(vararg parameterTypes: Class<*>): Constructor<T>? =