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

# TypeTestTreeMaker

#### case class TypeTestTreeMaker(prevBinder: Global.Symbol, testedBinder: Global.Symbol, expectedTp: Global.Type, nextBinderTp: Global.Type)(pos: Global.Position, extractorArgTypeTest: Boolean = false) extends CondTreeMaker with Product with Serializable

implements the run-time aspects of (§8.2) (typedPattern has already done the necessary type transformations)

Type patterns consist of types, type variables, and wildcards. A type pattern T is of one of the following forms:

- A reference to a class C, p.C, or T#C. This type pattern matches any non-null instance of the given class. Note that the prefix of the class, if it is given, is relevant for determining class instances. For instance, the pattern p.C matches only instances of classes C which were created with the path p as prefix. The bottom types scala.Nothing and scala.Null cannot be used as type patterns, because they would match nothing in any case.
- A singleton type p.type. This type pattern matches only the value denoted by the path p (that is, a pattern match involved a comparison of the matched value with p using method eq in class AnyRef). // TODO: the actual pattern matcher uses ==, so that's what I'm using for now // https://issues.scala-lang.org/browse/SI-4577 "pattern matcher, still disappointing us at equality time"
- A compound type pattern T1 with ... with Tn where each Ti is a type pat- tern. This type pattern matches all values that are matched by each of the type patterns Ti.
- A parameterized type pattern T[a1,...,an], where the ai are type variable patterns or wildcards _. This type pattern matches all values which match T for some arbitrary instantiation of the type variables and wildcards. The bounds or alias type of these type variable are determined as described in (§8.3).
- A parameterized type pattern scala.Array[T1], where T1 is a type pattern. // TODO This type pattern matches any non-null instance of type scala.Array[U1], where U1 is a type matched by T1.

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

1. TypeTestTreeMaker
2. Serializable
3. Serializable
4. Product
5. Equals
6. CondTreeMaker
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 TypeTestTreeMaker(prevBinder: Global.Symbol, testedBinder: Global.Symbol, expectedTp: Global.Type, nextBinderTp: Global.Type)(pos: Global.Position, extractorArgTypeTest: Boolean = false)

### 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 TypeTestTreeMaker to any2stringadd[TypeTestTreeMaker] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd

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

   Implicit information
     This member is added by an implicit conversion from TypeTestTreeMaker to ArrowAssoc[TypeTestTreeMaker] 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 chainBefore(next: Global.Tree)(casegen: TreeMakers.Casegen): Global.Tree

   Definition Classes
     CondTreeMaker → TreeMaker

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

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

9. #### val cond: Result

   Definition Classes
     TypeTestTreeMaker → CondTreeMaker

10. #### def ensuring(cond: (TypeTestTreeMaker) ⇒ Boolean, msg: ⇒ Any): TypeTestTreeMaker

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

11. #### def ensuring(cond: (TypeTestTreeMaker) ⇒ Boolean): TypeTestTreeMaker

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

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

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

13. #### def ensuring(cond: Boolean): TypeTestTreeMaker

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

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

    Definition Classes
      AnyRef

15. #### val expectedTp: Global.Type

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

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

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

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

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

    Definition Classes
      AnyRef → Any

19. #### def impliesBinderNonNull(binder: Global.Symbol): Boolean

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

    Definition Classes
      Any

21. #### def isPureTypeTest: Result

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

    Definition Classes
      CondTreeMaker → TreeMaker

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

    Definition Classes
      AnyRef

24. #### lazy val nextBinder: Global.TermSymbol

    Definition Classes
      CondTreeMaker → FunTreeMaker

25. #### val nextBinderTp: Global.Type

    Definition Classes
      TypeTestTreeMaker → CondTreeMaker

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

    Definition Classes
      AnyRef

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

    Definition Classes
      AnyRef

28. #### lazy val outerTestNeeded: Boolean

29. #### val pos: Global.Position

    Definition Classes
      TypeTestTreeMaker → FunTreeMaker → TreeMaker

30. #### val prevBinder: Global.Symbol

    Definition Classes
      TypeTestTreeMaker → CondTreeMaker

31. #### def renderCondition(cs: TypeTestCondStrategy): Result

32. #### val res: Global.Tree

    Definition Classes
      TypeTestTreeMaker → CondTreeMaker

33. #### 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.

    Should not be used to perform actual substitution! Only used to reason symbolically about the values the subpattern binders are bound to. See TreeMakerToCond#updateSubstitution.

    Overridden in PreserveSubPatBinders to pretend it replaces the subpattern binders by subpattern refs (Even though we don't do so anymore -- see SI-5158, SI-5739 and SI-6070.)

    TODO: clean this up, would be nicer to have some higher-level way to compute the binders bound by this tree maker and the symbolic values that correspond to them

    Definition Classes
      TreeMaker

34. #### 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

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

    Definition Classes
      AnyRef

36. #### val testedBinder: Global.Symbol

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

    Definition Classes
      TypeTestTreeMaker → AnyRef → Any

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

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

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

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

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

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

41. #### def →[B](y: B): (TypeTestTreeMaker, B)

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

### Inherited from FunTreeMaker

### Inherited from TreeMaker

### Inherited from AnyRef

### Inherited from Any

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

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

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

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

### Ungrouped