DirectoryLookup

dotty.tools.dotc.classpath.DirectoryLookup
trait DirectoryLookup[FileEntryType <: ClassRepresentation] extends EfficientClassPath

A trait allowing to look for classpath entries in directories. It provides common logic for classes handling class and source files. It makes use of the fact that in the case of nested directories it's easy to find a file when we have a name of a package. It abstracts over the file representation to work with both JFile and AbstractFile.

Attributes

Graph
Supertypes
trait ClassPath
class Object
trait Matchable
class Any
Known subtypes

Members list

Type members

Types

type F

Value members

Abstract methods

protected def createFileEntry(file: AbstractFile): FileEntryType
protected def emptyFiles: Array[F]
protected def getName(f: F): String
protected def getSubDir(dirName: String): Option[F]
protected def isMatchingFile(f: F): Boolean
protected def isPackage(f: F): Boolean
protected def listChildren(dir: F, filter: Option[F => Boolean]): Array[F]
protected def toAbstractFile(f: F): AbstractFile

Concrete methods

protected def files(inPackage: PackageName): Seq[FileEntryType]
override def list(inPackage: PackageName, onPackageEntry: PackageEntry => Unit, onClassesAndSources: ClassRepresentation => Unit): Unit

Attributes

Definition Classes

Inherited methods

The whole classpath in the form of one String.

The whole classpath in the form of one String.

Attributes

Inherited from:
ClassPath

Attributes

Inherited from:
ClassPath

The whole sourcepath in the form of one String.

The whole sourcepath in the form of one String.

Attributes

Inherited from:
ClassPath
def asURLs: Seq[URL]

Attributes

Inherited from:
ClassPath
final def classes(inPackage: String): Seq[ClassFileEntry]

Attributes

Inherited from:
ClassPath

Returns the class file and / or source file for a given external name, e.g., "java.lang.String". If there is both a class file and source file, the compiler can decide whether to read the class file or compile the source file.

Returns the class file and / or source file for a given external name, e.g., "java.lang.String". If there is both a class file and source file, the compiler can decide whether to read the class file or compile the source file.

Internally this seems to be used only by ScriptRunner, but only to call .isDefined. That could probably be implemented differently.

Externally, it is used by sbt's compiler interface: https://github.com/sbt/sbt/blob/v0.13.15/compile/interface/src/main/scala/xsbt/CompilerInterface.scala#L249 Jason has some improvements for that in the works (https://github.com/scala/bug/issues/10289#issuecomment-310022699)

Attributes

Inherited from:
ClassPath

Returns the classfile for an external name, e.g., "java.lang.String". This method does not return source files.

Returns the classfile for an external name, e.g., "java.lang.String". This method does not return source files.

This method is used by the classfile parser. When parsing a Java class, its own inner classes are entered with a ClassfileLoader that parses the classfile returned by this method. It is also used in the backend, by the inliner, to obtain the bytecode when inlining from the classpath. It's also used by scalap.

Attributes

Inherited from:
ClassPath
final def hasPackage(pkg: String): Boolean

Attributes

Inherited from:
ClassPath
override def list(inPackage: PackageName): ClassPathEntries

Returns packages and classes (source or classfile) that are members of inPackage (not recursively). The inPackage contains a full package name, e.g., "scala.collection".

Returns packages and classes (source or classfile) that are members of inPackage (not recursively). The inPackage contains a full package name, e.g., "scala.collection".

This is the main method uses to find classes, see class PackageLoader. The rootMirror.rootLoader is created with inPackage = "".

Attributes

Definition Classes
Inherited from:
EfficientClassPath
final def list(inPackage: String): ClassPathEntries

Attributes

Inherited from:
ClassPath
final def packages(inPackage: String): Seq[PackageEntry]

Attributes

Inherited from:
ClassPath
final def sources(inPackage: String): Seq[SourceFileEntry]

Attributes

Inherited from:
ClassPath

Deprecated and Inherited methods

Attributes

Deprecated
true
Inherited from:
ClassPath

Abstract fields

val dir: F