Scala Compiler2.13.9 < 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 transform
  Definition Classes
    nsc
-  package patmat
  Definition Classes
    transform
-  trait MatchTreeMaking extends MatchCodeGen with Debugging

  Translate our IR (TreeMakers) into actual Scala Trees using the factory methods in MatchCodeGen.

  Translate our IR (TreeMakers) into actual Scala Trees using the factory methods in MatchCodeGen.

  The IR is mostly concerned with sequencing, substitution, and rendering all necessary conditions.

  Definition Classes
    patmat
-  trait TreeMakers extends TypedSubstitution with CodegenCore
  Definition Classes
    MatchTreeMaking
- AbsCodegen
- AlternativesTreeMaker
- BodyTreeMaker
- Casegen
- CommonCodegen
- CondTreeMaker
- EmptySubstitution
- EqualityTestTreeMaker
- ExtractorTreeMaker
- FunTreeMaker
- GuardTreeMaker
- NoNewBinders
- NonNullTestTreeMaker
- PreserveSubPatBinders
- ProductExtractorTreeMaker
- SubstOnlyTreeMaker
- Substitution
- TreeMaker
- TrivialTreeMaker
- TypeTestTreeMaker

t

scala.tools.nsc.transform.patmat.MatchTreeMaking.TreeMakers

# PreserveSubPatBinders

###

#### sealed trait PreserveSubPatBinders extends TreeMaker

Source
  MatchTreeMaking.scala

Linear Supertypes
TreeMaker, AnyRef, Any
Known Subclasses
ExtractorTreeMaker, ProductExtractorTreeMaker
Type Hierarchy

Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. PreserveSubPatBinders
2. TreeMaker
3. AnyRef
4. Any

Implicitly

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

1. Hide All
2. Show All

Visibility

1. Public
2. Protected

### Abstract Value Members

1.  abstract def chainBefore(next: Global.Tree)(casegen: TreeMakers.Casegen): Global.Tree
   Definition Classes
     TreeMaker
2.  abstract def extraStoredBinders: Set[Global.Symbol]
3.  abstract val ignoredSubPatBinders: Set[Global.Symbol]
4.  abstract def pos: Global.Position
   Definition Classes
     TreeMaker
5.  abstract val subPatBinders: List[Global.Symbol]
6.  abstract val subPatRefs: List[Global.Tree]

### Concrete 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 PreserveSubPatBinders toany2stringadd[PreserveSubPatBinders] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
4.  def ->[B](y: B): (PreserveSubPatBinders, B)
   Implicit
     This member is added by an implicit conversion from PreserveSubPatBinders toArrowAssoc[PreserveSubPatBinders] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
5.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
6.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
7.  def bindSubPats(in: Global.Tree): Global.Tree
8.  def clone(): AnyRef
   Attributes
     protected[lang]
   Definition Classes
     AnyRef
   Annotations
     @throws(classOf[java.lang.CloneNotSupportedException]) @native()
9.  def emitVars: Boolean
10.  def ensuring(cond: (PreserveSubPatBinders) => Boolean, msg: => Any): PreserveSubPatBinders
    Implicit
      This member is added by an implicit conversion from PreserveSubPatBinders toEnsuring[PreserveSubPatBinders] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
11.  def ensuring(cond: (PreserveSubPatBinders) => Boolean): PreserveSubPatBinders
    Implicit
      This member is added by an implicit conversion from PreserveSubPatBinders toEnsuring[PreserveSubPatBinders] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
12.  def ensuring(cond: Boolean, msg: => Any): PreserveSubPatBinders
    Implicit
      This member is added by an implicit conversion from PreserveSubPatBinders toEnsuring[PreserveSubPatBinders] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
13.  def ensuring(cond: Boolean): PreserveSubPatBinders
    Implicit
      This member is added by an implicit conversion from PreserveSubPatBinders toEnsuring[PreserveSubPatBinders] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
14.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
15.  def equals(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef → Any
16.  def finalize(): Unit
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.Throwable])
17.  final def getClass(): Class[_ <: AnyRef]
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
18.  def hashCode(): Int
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
19.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
20.  lazy val localSubstitution: TreeMakers.Substitution
    Attributes
      protected
    Definition Classes
      PreserveSubPatBinders → TreeMaker
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.  def subPatternsAsSubstitution: TreeMakers.Substitution

    The substitution that specifies the trees that compute the values of the subpattern binders.

    The substitution that specifies the trees that compute the values of the subpattern binders.

    We pretend to replace the subpattern binders by subpattern refs (Even though we don't do so anymore -- see scala/bug#5158, scala/bug#5739 and scala/bug#6070.)

    Definition Classes
      PreserveSubPatBinders → TreeMaker
25.  def substitution: TreeMakers.Substitution

    captures the scope and the value of the bindings in patterns important *when* the substitution happens (can't accumulate and do at once after the full matcher has been constructed)

    captures the scope and the value of the bindings in patterns important *when* the substitution happens (can't accumulate and do at once after the full matcher has been constructed)

    Definition Classes
      TreeMaker
26.  final def synchronized[T0](arg0: => T0): T0
    Definition Classes
      AnyRef
27.  def toString(): String
    Definition Classes
      AnyRef → Any
28.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
29.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
30.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException]) @native()

### Deprecated Value Members

1.  def formatted(fmtstr: String): String
   Implicit
     This member is added by an implicit conversion from PreserveSubPatBinders toStringFormat[PreserveSubPatBinders] 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.

2.  def →[B](y: B): (PreserveSubPatBinders, B)
   Implicit
     This member is added by an implicit conversion from PreserveSubPatBinders toArrowAssoc[PreserveSubPatBinders] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @deprecated
   Deprecated

     (Since version 2.13.0) Use `->` instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

### Inherited from TreeMaker

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd fromPreserveSubPatBinders to any2stringadd[PreserveSubPatBinders]

### Inherited by implicit conversion StringFormat fromPreserveSubPatBinders to StringFormat[PreserveSubPatBinders]

### Inherited by implicit conversion Ensuring fromPreserveSubPatBinders to Ensuring[PreserveSubPatBinders]

### Inherited by implicit conversion ArrowAssoc fromPreserveSubPatBinders to ArrowAssoc[PreserveSubPatBinders]

### Ungrouped