trait JavaMirror extends api.Mirror[JavaUniverse.this.type] with RuntimeMirror
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 Mirrorss, see scala.reflect.api.Mirrors or the
Reflection Guide: Mirrors
- Source
- JavaUniverse.scala
- Grouped
- Alphabetic
- By Inheritance
- JavaMirror
- RuntimeMirror
- ReflectiveMirror
- Mirror
- AnyRef
- Any
- by any2stringadd
- by StringFormat
- by Ensuring
- by ArrowAssoc
- Hide All
- Show All
- Public
- All
Abstract Value Members
-
abstract
def
EmptyPackage: JavaUniverse.ModuleSymbol
The module symbol of the default (unnamed) package
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
The module class symbol of the default (unnamed) package
- Definition Classes
- Mirror
-
abstract
def
RootClass: JavaUniverse.ClassSymbol
The class symbol of the
_root_packageThe class symbol of the
_root_package- Definition Classes
- Mirror
-
abstract
def
RootPackage: JavaUniverse.ModuleSymbol
The module symbol of the
_root_packageThe 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.
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.ClassNotFoundExceptionif no class with that name existsscala.reflect.ScalaReflectionExceptionif no corresponding symbol exists to do: throws anything else?
-
abstract
def
moduleSymbol(rtcls: RuntimeClass): JavaUniverse.ModuleSymbol
A module symbol for the specified runtime class.
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.ClassNotFoundExceptionif no class with that name existsscala.reflect.ScalaReflectionExceptionif 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.
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.
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.
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
Maps a Scala class symbol to the corresponding Java class object
- Definition Classes
- RuntimeMirror
- Exceptions thrown
ClassNotFoundExceptionif 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
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.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.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.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
xas derived from a type tag.Type symbol of
xas derived from a type tag.- Definition Classes
- Mirror
-
abstract
val
universe: JavaUniverse.this.type
The universe this mirror belongs to.
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] )
-
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]].tpeShortcut 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]].tpeShortcut 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
Deprecated Value Members
-
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
- @deprecated @inline()
- Deprecated
(Since version 2.12.16) Use
formatString.format(value)instead ofvalue.formatted(formatString), or use thef""string interpolator. In Java 15 and later,formattedresolves to the new method in String which has reversed parameters.