object Invocation in scala.reflect

scala.reflect

object Invocation

[source: scala/reflect/Invocation.scala]

@experimental object Invocation: extends AnyRef

A more convenient syntax for reflective invocation.
Example usage:

    class Obj { private def foo(x: Int, y: String): Long = x + y.length }

You can call it reflectively one of two ways:

    import scala.reflect.Invocation._
    (new Obj) o 'foo(5, "abc")                 // the 'o' method returns Any
    val x: Long = (new Obj) oo 'foo(5, "abc")  // the 'oo' method casts to expected type.

If you call the oo method and do not give the type inferencer enough help, it will most likely infer Nothing, which will result in a ClassCastException.

Author: Paul Phillips

Method Summary
`def`	getAnyValClass (x : AnyVal) : java.lang.Class[Any] Obtain the class object for an `AnyVal`.
`implicit def`	makePreservedAnyRef [T <: AnyRef](x : T) : PreservedAnyRef[T]
`implicit def`	makePreservedAnyVal [T <: AnyVal](x : T) : PreservedAnyVal[T]
`implicit def`	makeReflectionOperators [T <: AnyRef](x : T) : ReflectionOperators[T]
`implicit def`	makeRichSymbol (sym : Symbol) : RichSymbol

Methods inherited from AnyRef
getClass, hashCode, equals, clone, toString, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized

Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf

Class Summary
`case class`	PreservedAnyRef [T <: AnyRef](`val` value : T) `extends` PrimitivePreserver[T] `with` Product
`case class`	PreservedAnyVal [T <: AnyVal](`val` value : T) `extends` PrimitivePreserver[T] `with` Product
`trait`	PrimitivePreserver [T] `extends` AnyRef
`class`	ReflectionOperators [T <: AnyRef](self : T) `extends` AnyRef An implicit on AnyRef provides it with the 'o' method, which is supposed to look like a giant '.' and present the feel of method invocation.
`class`	RichSymbol (sym : Symbol) `extends` AnyRef
`class`	SymbolWithArguments (`val` sym : Symbol, `val` args : PrimitivePreserver[Any]*) `extends` AnyRef We also require an implicit on scala.Symbol so they appear to contain an apply method, which packages the method arguments. The type parameter is the method's expected result type.

Method Details

implicit def makePreservedAnyRef[T <: AnyRef](x : T) : PreservedAnyRef[T]

implicit def makePreservedAnyVal[T <: AnyVal](x : T) : PreservedAnyVal[T]

implicit def makeRichSymbol(sym : Symbol) : RichSymbol

implicit def makeReflectionOperators[T <: AnyRef](x : T) : ReflectionOperators[T]

def getAnyValClass(x : AnyVal) : java.lang.Class[Any]

Obtain the class object for an AnyVal.

	Scala Library

	Scala Library