Trait scala.reflect.api.JavaUniverse.JavaMirror
trait JavaMirror extends api.Mirror[JavaUniverse.this.type] with RuntimeMirror
Abstract Value Members
abstract def EmptyPackage: JavaUniverse.ModuleSymbol
The module symbol of the default (unnamed) package
- Definition Classes
- Mirror
abstract def EmptyPackageClass: JavaUniverse.ClassSymbol
The module class symbol of the default (unnamed) package
- Definition Classes
- Mirror
abstract def RootClass: JavaUniverse.ClassSymbol
The class symbol of the _root_
package
- Definition Classes
- Mirror
abstract def RootPackage: JavaUniverse.ModuleSymbol
The module symbol of the _root_
package
- Definition Classes
- Mirror
abstract val classLoader: ClassLoader
abstract def classSymbol(rtcls: RuntimeClass): JavaUniverse.ClassSymbol
A class symbol for the specified runtime class.
- returns
The class symbol for the runtime class in the current class loader.
- Definition Classes
- RuntimeMirror
- Exceptions thrown
-
java.lang.ClassNotFoundException
if no class with that name existsscala.reflect.ScalaReflectionException
if no corresponding symbol exists to do: throws anything else?
abstract def moduleSymbol(rtcls: RuntimeClass): JavaUniverse.ModuleSymbol
A module symbol for the specified runtime class.
- returns
The module symbol for the runtime class in the current class loader.
- Definition Classes
- RuntimeMirror
- Exceptions thrown
-
java.lang.ClassNotFoundException
if no class with that name existsscala.reflect.ScalaReflectionException
if no corresponding symbol exists to do: throws anything else?
abstract def reflect[T](obj: T)(implicit arg0: ClassTag[T]): JavaUniverse.InstanceMirror
A reflective mirror for the given object.
Such a mirror can be used to further reflect against the members of the object to get/set fields, invoke methods and inspect inner classes and objects.
- Definition Classes
- ReflectiveMirror
abstract def reflectClass(cls: JavaUniverse.ClassSymbol): JavaUniverse.ClassMirror
Reflects against a static class symbol and returns a mirror that can be used to create instances of the class, inspect its companion object or perform further reflections.
To get a class symbol by the name of the class you would like to reflect, use <this mirror>.classSymbol(<runtime class loaded by its name>)
.
The input symbol can be either private or non-private (Scala reflection transparently deals with visibility). It must be static, i.e. either top-level or nested within one or several static objects.
- Definition Classes
- ReflectiveMirror
abstract def reflectModule(mod: JavaUniverse.ModuleSymbol): JavaUniverse.ModuleMirror
Reflects against a static module symbol and returns a mirror that can be used to get the instance of the object or inspect its companion class.
To get a module symbol by the name of its companion class you would like to reflect, use <this mirror>.classSymbol(<runtime class loaded by its name>).companion.get
.
The input symbol can be either private or non-private (Scala reflection transparently deals with visibility). It must be static, i.e. either top-level or nested within one or several static objects.
- Definition Classes
- ReflectiveMirror
abstract def runtimeClass(cls: JavaUniverse.ClassSymbol): RuntimeClass
Maps a Scala class symbol to the corresponding Java class object
- Definition Classes
- RuntimeMirror
- Exceptions thrown
ClassNotFoundException
if there is no Java class corresponding to the given Scala class symbol. Note: If the Scala symbol is ArrayClass, a ClassNotFound exception is thrown because there is no unique Java class corresponding to a Scala generic array
abstract def runtimeClass(tpe: JavaUniverse.Type): RuntimeClass
Maps a Scala type to the corresponding Java class object
- Definition Classes
- RuntimeMirror
abstract def staticClass(fullName: String): JavaUniverse.ClassSymbol
The symbol corresponding to the globally accessible class with the given fully qualified name fullName
.
If the name points to a type alias, it's recursively dealiased and its target is returned. If you need a symbol that corresponds to the type alias itself, load it directly from the package class:
scala> cm.staticClass("scala.List") res0: scala.reflect.runtime.universe.ClassSymbol = class List
scala> res0.fullName res1: String = scala.collection.immutable.List
scala> cm.staticPackage("scala") res2: scala.reflect.runtime.universe.ModuleSymbol = package scala
scala> res2.moduleClass.info member TypeName("List") res3: scala.reflect.runtime.universe.Symbol = type List
scala> res3.fullName res4: String = scala.List
To be consistent with Scala name resolution rules, in case of ambiguity between a package and an object, the object is never been considered.
For example for the following code:
package foo { class B }
object foo { class A class B }
staticClass("foo.B") will resolve to the symbol corresponding to the class B declared in the package foo, and staticClass("foo.A") will throw a ScalaReflectionException.
In the example above, to load a symbol that corresponds to the class B declared in the object foo, use staticModule("foo") to load the module symbol and then navigate info.members of its moduleClass.
- Definition Classes
- Mirror
abstract def staticModule(fullName: String): JavaUniverse.ModuleSymbol
The symbol corresponding to the globally accessible object with the given fully qualified name fullName
.
To be consistent with Scala name resolution rules, in case of ambiguity between a package and an object, the object is never been considered.
For example for the following code:
package foo { object B }
object foo { object A object B }
staticModule("foo.B") will resolve to the symbol corresponding to the object B declared in the package foo, and staticModule("foo.A") will throw a ScalaReflectionException
In the example above, to load a symbol that corresponds to the object B declared in the object foo, use staticModule("foo") to load the module symbol and then navigate info.members of its moduleClass.
- Definition Classes
- Mirror
abstract def staticPackage(fullName: String): JavaUniverse.ModuleSymbol
The symbol corresponding to a package with the given fully qualified name fullName
.
- Definition Classes
- Mirror
abstract def symbolOf[T](implicit arg0: JavaUniverse.WeakTypeTag[T]): JavaUniverse.TypeSymbol
Type symbol of x
as derived from a type tag.
- Definition Classes
- Mirror
abstract val universe: JavaUniverse.this.type
The universe this mirror belongs to.
- Definition Classes
- Mirror
Concrete Value Members
final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
final def ##(): Int
- Definition Classes
- AnyRef → Any
def +(other: String): String
- Implicit
- This member is added by an implicit conversion from JavaMirror to any2stringadd[JavaMirror] performed by method any2stringadd in scala.Predef.
- Definition Classes
- any2stringadd
def ->[B](y: B): (JavaMirror, B)
- Implicit
- This member is added by an implicit conversion from JavaMirror to ArrowAssoc[JavaMirror] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @inline()
final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
final def asInstanceOf[T0]: T0
- Definition Classes
- Any
def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( ... ) @native()
def ensuring(cond: (JavaMirror) ⇒ Boolean, msg: ⇒ Any): JavaMirror
- Implicit
- This member is added by an implicit conversion from JavaMirror to Ensuring[JavaMirror] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
def ensuring(cond: (JavaMirror) ⇒ Boolean): JavaMirror
- Implicit
- This member is added by an implicit conversion from JavaMirror to Ensuring[JavaMirror] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
def ensuring(cond: Boolean, msg: ⇒ Any): JavaMirror
- Implicit
- This member is added by an implicit conversion from JavaMirror to Ensuring[JavaMirror] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
def ensuring(cond: Boolean): JavaMirror
- Implicit
- This member is added by an implicit conversion from JavaMirror to Ensuring[JavaMirror] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
def equals(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( classOf[java.lang.Throwable] )
def formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from JavaMirror to StringFormat[JavaMirror] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @inline()
final def getClass(): Class[_]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
final def synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
def toString(): String
- Definition Classes
- JavaMirror → AnyRef → Any
def typeOf[T](implicit arg0: JavaUniverse.TypeTag[T]): JavaUniverse.Type
Shortcut for implicitly[TypeTag[T]].tpe
- Definition Classes
- Mirror
final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... ) @native()
def weakTypeOf[T](implicit arg0: JavaUniverse.WeakTypeTag[T]): JavaUniverse.Type
Shortcut for implicitly[WeakTypeTag[T]].tpe
- Definition Classes
- Mirror
def →[B](y: B): (JavaMirror, B)
- Implicit
- This member is added by an implicit conversion from JavaMirror to ArrowAssoc[JavaMirror] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
© 2002-2019 EPFL, with contributions from Lightbend.
Licensed under the Apache License, Version 2.0.
https://www.scala-lang.org/api/2.12.9/scala-reflect/scala/reflect/api/JavaUniverse$JavaMirror.html
A refinement of scala.reflect.api.Mirror for runtime reflection using JVM classloaders.
With this upgrade, mirrors become capable of converting Scala reflection artifacts (symbols and types) into Java reflection artifacts (classes) and vice versa. Consequently, refined mirrors become capable of performing reflective invocations (getting/setting field values, calling methods, etc).
For more information about
Mirrors
s, see scala.reflect.api.Mirrors or the Reflection Guide: Mirrors