Scala Compiler2.12.21 < Back
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# Packages

-  package root

  The Scala compiler and reflection APIs.

  The Scala compiler and reflection APIs.

  Definition Classes
    root
-  package scala
  Definition Classes
    root
-  package tools
  Definition Classes
    scala
-  package nsc
  Definition Classes
    tools
-  package typechecker
  Definition Classes
    nsc
-  trait PatternTypers extends AnyRef

  A pattern match such as

  A pattern match such as

  x match { case Foo(a, b) => ...}

  Might match an instance of any of the following definitions of Foo. Note the analogous treatment between case classes and unapplies.

  case class Foo(xs: Int*) case class Foo(a: Int, xs: Int*) case class Foo(a: Int, b: Int) case class Foo(a: Int, b: Int, xs: Int*)

  object Foo { def unapplySeq(x: Any): Option[Seq[Int]] } object Foo { def unapplySeq(x: Any): Option[(Int, Seq[Int])] } object Foo { def unapply(x: Any): Option[(Int, Int)] } object Foo { def unapplySeq(x: Any): Option[(Int, Int, Seq[Int])] }

  Definition Classes
    typechecker
- PatternTyper

t

scala.tools.nsc.typechecker.PatternTypers

# PatternTyper 

###

#### trait PatternTyper extends AnyRef

Self Type
  Analyzer.Typer
Source
  PatternTypers.scala

Linear Supertypes
AnyRef, Any
Known Subclasses
typer, ScaladocTyper, InteractiveTyper, Eraser, BodyDuplicator, BodyDuplicator, ImplicitSearch, TreeChecker, Typer
 
Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. PatternTyper
2. AnyRef
3. Any

Implicitly

1. by any2stringadd
2. by StringFormat
3. by Ensuring
4. by ArrowAssoc

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Visibility

1. Public
2. All

### Value Members

1.  final def !=(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
2.  final def ##(): Int
   Definition Classes
     AnyRef → Any
3.  def +(other: String): String
   Implicit
     This member is added by an implicit conversion from Analyzer.PatternTyper to any2stringadd[Analyzer.PatternTyper] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
4.  def ->[B](y: B): (Analyzer.PatternTyper, B)
   Implicit
     This member is added by an implicit conversion from Analyzer.PatternTyper to ArrowAssoc[Analyzer.PatternTyper] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
5.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
6.  def applyTypeToWildcards(tp: Global.Type): Global.Type
7.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
8.  def clone(): AnyRef
   Attributes
     protected[lang]
   Definition Classes
     AnyRef
   Annotations
     @throws( ... ) @native()
9.  def doTypedUnapply(tree: Global.Tree, funOrig: Global.Tree, funOverloadResolved: Global.Tree, args: List[Global.Tree], mode: Mode, pt: Global.Type): Global.Tree
10.  def ensuring(cond: (Analyzer.PatternTyper) ⇒ Boolean, msg: ⇒ Any): Analyzer.PatternTyper
    Implicit
      This member is added by an implicit conversion from Analyzer.PatternTyper to Ensuring[Analyzer.PatternTyper] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
11.  def ensuring(cond: (Analyzer.PatternTyper) ⇒ Boolean): Analyzer.PatternTyper
    Implicit
      This member is added by an implicit conversion from Analyzer.PatternTyper to Ensuring[Analyzer.PatternTyper] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
12.  def ensuring(cond: Boolean, msg: ⇒ Any): Analyzer.PatternTyper
    Implicit
      This member is added by an implicit conversion from Analyzer.PatternTyper to Ensuring[Analyzer.PatternTyper] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
13.  def ensuring(cond: Boolean): Analyzer.PatternTyper
    Implicit
      This member is added by an implicit conversion from Analyzer.PatternTyper to Ensuring[Analyzer.PatternTyper] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
14.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
15.  def equals(arg0: Any): Boolean
    Definition Classes
      AnyRef → Any
16.  def extractorForUncheckedType(pos: Global.Position, pt: Global.Type): Global.Tree
17.  def finalize(): Unit
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
18.  final def getClass(): Class[_]
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
19.  def hashCode(): Int
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
20.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
21.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
22.  final def notify(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
23.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
24.  final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
      AnyRef
25.  def toString(): String
    Definition Classes
      AnyRef → Any
26.  def typedArgsForFormals(args: List[Global.Tree], formals: List[Global.Type], mode: Mode): List[Global.Tree]
27.  def typedConstructorPattern(fun0: Global.Tree, pt: Global.Type): Global.Tree
28.  def typedInPattern(tree: Global.Typed, mode: Mode, pt: Global.Type): Global.Tree
    Attributes
      protected
29.  def typedStarInPattern(tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree
    Attributes
      protected
30.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
31.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
32.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... ) @native()
33.  def wrapClassTagUnapply(uncheckedPattern: Global.Tree, classTagExtractor: Global.Tree, pt: Global.Type): Global.Tree
34.  def →[B](y: B): (Analyzer.PatternTyper, B)
    Implicit
      This member is added by an implicit conversion from Analyzer.PatternTyper to ArrowAssoc[Analyzer.PatternTyper] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc

### Deprecated Value Members

1.  def formatted(fmtstr: String): String
   Implicit
     This member is added by an implicit conversion from Analyzer.PatternTyper to StringFormat[Analyzer.PatternTyper] performed by method StringFormat in scala.Predef.
   Definition Classes
     StringFormat
   Annotations
     @deprecated @inline()
   Deprecated

     (Since version 2.12.16) Use `formatString.format(value)` instead of `value.formatted(formatString)`, or use the `f""` string interpolator. In Java 15 and later, `formatted` resolves to the new method in String which has reversed parameters.

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd from Analyzer.PatternTyper to any2stringadd[Analyzer.PatternTyper]

### Inherited by implicit conversion StringFormat from Analyzer.PatternTyper to StringFormat[Analyzer.PatternTyper]

### Inherited by implicit conversion Ensuring from Analyzer.PatternTyper to Ensuring[Analyzer.PatternTyper]

### Inherited by implicit conversion ArrowAssoc from Analyzer.PatternTyper to ArrowAssoc[Analyzer.PatternTyper]

### Ungrouped