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

# ExtractorTreeMaker

#### case class ExtractorTreeMaker(extractor: Global.Tree, extraCond: Option[Global.Tree], nextBinder: Global.Symbol)(subPatBinders: List[Global.Symbol], subPatRefs: List[Global.Tree], extractorReturnsBoolean: Boolean, checkedLength: Option[Int], prevBinder: Global.Symbol, ignoredSubPatBinders: Set[Global.Symbol]) extends FunTreeMaker with PreserveSubPatBinders with Product with Serializable

Make a TreeMaker that will result in an extractor call specified by `extractor` the next TreeMaker (here, we don't know which it'll be) is chained after this one by flatMap'ing a function with binder `nextBinder` over our extractor's result the function's body is determined by the next TreeMaker (furthermore, the interpretation of `flatMap` depends on the codegen instance we're using).

The values for the subpatterns, as computed by the extractor call in `extractor`, are stored in local variables that re-use the symbols in `subPatBinders`. This makes extractor patterns more debuggable (SI-5739).

Source
  MatchTreeMaking.scala

Linear Supertypes
Serializable, java.io.Serializable, Product, Equals, PreserveSubPatBinders, FunTreeMaker, TreeMaker, AnyRef, Any
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Inherited

1. ExtractorTreeMaker
2. Serializable
3. Serializable
4. Product
5. Equals
6. PreserveSubPatBinders
7. FunTreeMaker
8. TreeMaker
9. AnyRef
10. Any

Implicitly

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

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### Instance Constructors

1. #### new ExtractorTreeMaker(extractor: Global.Tree, extraCond: Option[Global.Tree], nextBinder: Global.Symbol)(subPatBinders: List[Global.Symbol], subPatRefs: List[Global.Tree], extractorReturnsBoolean: Boolean, checkedLength: Option[Int], prevBinder: Global.Symbol, ignoredSubPatBinders: Set[Global.Symbol])

### 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 information
     This member is added by an implicit conversion from ExtractorTreeMaker to any2stringadd[ExtractorTreeMaker] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd

4. #### def ->[B](y: B): (ExtractorTreeMaker, B)

   Implicit information
     This member is added by an implicit conversion from ExtractorTreeMaker to ArrowAssoc[ExtractorTreeMaker] 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

   Definition Classes
     PreserveSubPatBinders

8. #### def chainBefore(next: Global.Tree)(casegen: TreeMakers.Casegen): Global.Tree

   Definition Classes
     ExtractorTreeMaker → TreeMaker

9. #### val checkedLength: Option[Int]

10. #### def clone(): AnyRef

    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

11. #### def emitVars: Boolean

    Definition Classes
      PreserveSubPatBinders

12. #### def ensuring(cond: (ExtractorTreeMaker) ⇒ Boolean, msg: ⇒ Any): ExtractorTreeMaker

    Implicit information
      This member is added by an implicit conversion from ExtractorTreeMaker to Ensuring[ExtractorTreeMaker] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

13. #### def ensuring(cond: (ExtractorTreeMaker) ⇒ Boolean): ExtractorTreeMaker

    Implicit information
      This member is added by an implicit conversion from ExtractorTreeMaker to Ensuring[ExtractorTreeMaker] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

14. #### def ensuring(cond: Boolean, msg: ⇒ Any): ExtractorTreeMaker

    Implicit information
      This member is added by an implicit conversion from ExtractorTreeMaker to Ensuring[ExtractorTreeMaker] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

15. #### def ensuring(cond: Boolean): ExtractorTreeMaker

    Implicit information
      This member is added by an implicit conversion from ExtractorTreeMaker to Ensuring[ExtractorTreeMaker] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

16. #### final def eq(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

17. #### val extraCond: Option[Global.Tree]

18. #### def extraStoredBinders: Set[Global.Symbol]

    Definition Classes
      ExtractorTreeMaker → PreserveSubPatBinders

19. #### val extractor: Global.Tree

20. #### def finalize(): Unit

    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )

21. #### def formatted(fmtstr: String): String

    Implicit information
      This member is added by an implicit conversion from ExtractorTreeMaker to StringFormat[ExtractorTreeMaker] performed by method StringFormat in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @inline()

22. #### final def getClass(): Class[_]

    Definition Classes
      AnyRef → Any

23. #### val ignoredSubPatBinders: Set[Global.Symbol]

    Definition Classes
      ExtractorTreeMaker → PreserveSubPatBinders

24. #### final def isInstanceOf[T0]: Boolean

    Definition Classes
      Any

25. #### lazy val localSubstitution: TreeMakers.Substitution

    Attributes
      protected
    Definition Classes
      PreserveSubPatBinders → TreeMaker

26. #### final def ne(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

27. #### val nextBinder: Global.Symbol

    Definition Classes
      ExtractorTreeMaker → FunTreeMaker

28. #### final def notify(): Unit

    Definition Classes
      AnyRef

29. #### final def notifyAll(): Unit

    Definition Classes
      AnyRef

30. #### def pos: Global.Position

    Definition Classes
      FunTreeMaker → TreeMaker

31. #### val prevBinder: Global.Symbol

32. #### lazy val storedBinders: Set[Global.Symbol]

    Definition Classes
      PreserveSubPatBinders

33. #### val subPatBinders: List[Global.Symbol]

    Definition Classes
      ExtractorTreeMaker → PreserveSubPatBinders

34. #### val subPatRefs: List[Global.Tree]

    Definition Classes
      ExtractorTreeMaker → PreserveSubPatBinders

35. #### 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 SI-5158, SI-5739 and SI-6070.)

    Definition Classes
      PreserveSubPatBinders → TreeMaker

36. #### 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

37. #### final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
      AnyRef

38. #### def toString(): String

    Definition Classes
      ExtractorTreeMaker → AnyRef → Any

39. #### final def wait(): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

40. #### final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

41. #### final def wait(arg0: Long): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

42. #### def →[B](y: B): (ExtractorTreeMaker, B)

    Implicit information
      This member is added by an implicit conversion from ExtractorTreeMaker to ArrowAssoc[ExtractorTreeMaker] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc

### Inherited from Serializable

### Inherited from java.io.Serializable

### Inherited from Product

### Inherited from Equals

### Inherited from PreserveSubPatBinders

### Inherited from FunTreeMaker

### Inherited from TreeMaker

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd from ExtractorTreeMaker to any2stringadd[ExtractorTreeMaker]

### Inherited by implicit conversion StringFormat from ExtractorTreeMaker to StringFormat[ExtractorTreeMaker]

### Inherited by implicit conversion Ensuring from ExtractorTreeMaker to Ensuring[ExtractorTreeMaker]

### Inherited by implicit conversion ArrowAssoc from ExtractorTreeMaker to ArrowAssoc[ExtractorTreeMaker]

### Ungrouped