scala.reflect.api.Trees

# LabelDefApi

#### trait LabelDefApi extends Universe.DefTreeApi with Universe.TermTreeApi

The API that all label defs support

Self Type
  Universe.LabelDef
Source
  Trees.scala

Linear Supertypes
Universe.TermTreeApi, Universe.DefTreeApi, Universe.NameTreeApi, Universe.SymTreeApi, Universe.TreeApi, Product, Equals, AnyRef, Any
Known Subclasses
LabelDef
Type Hierarchy Learn more about scaladoc diagrams
Ordering

1. Alphabetic
2. By inheritance

Inherited

1. LabelDefApi
2. TermTreeApi
3. DefTreeApi
4. NameTreeApi
5. SymTreeApi
6. TreeApi
7. Product
8. Equals
9. AnyRef
10. Any

Implicitly

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

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### Abstract Value Members

1. #### abstract def canEqual(that: Any): Boolean

   Definition Classes
     Equals

2. #### abstract def canHaveAttrs: Boolean

   Can this tree carry attributes (i.e.

   Can this tree carry attributes (i.e. symbols, types or positions)? Typically the answer is yes, except for the `EmptyTree` null object and two special singletons: `noSelfType` and `pendingSuperCall`.

   Definition Classes
     TreeApi

3. #### abstract def children: List[Universe.Tree]

   The direct child trees of this tree.

   The direct child trees of this tree. EmptyTrees are always omitted. Lists are flattened.

   Definition Classes
     TreeApi

4. #### abstract def collect[T](pf: PartialFunction[Universe.Tree, T]): List[T]

   Apply `pf' to each subtree on which the function is defined and collect the results.`

   Apply `pf' to each subtree on which the function is defined and collect the results.`

   Definition Classes
     TreeApi

5. #### abstract def duplicate: LabelDefApi.this.type

   Make a copy of this tree, keeping all attributes, except that all positions are focused (so nothing in this tree will be found when searching by position).

   Make a copy of this tree, keeping all attributes, except that all positions are focused (so nothing in this tree will be found when searching by position).

   Definition Classes
     TreeApi

6. #### abstract def equalsStructure(that: Universe.Tree): Boolean

   Tests whether two trees are structurall equal.

   Tests whether two trees are structurall equal. Note that `==` on trees is reference equality.

   Definition Classes
     TreeApi

7. #### abstract def exists(p: (Universe.Tree) ⇒ Boolean): Boolean

   Is there exists a part of this tree which satisfies predicate `p`?

   Is there exists a part of this tree which satisfies predicate `p`?

   Definition Classes
     TreeApi

8. #### abstract def filter(f: (Universe.Tree) ⇒ Boolean): List[Universe.Tree]

   Find all subtrees matching predicate `p`.

   Find all subtrees matching predicate `p`. Same as `withFilter`

   Definition Classes
     TreeApi

9. #### abstract def find(p: (Universe.Tree) ⇒ Boolean): Option[Universe.Tree]

   Returns optionally first tree (in a preorder traversal) which satisfies predicate `p`, or None if none exists.

   Returns optionally first tree (in a preorder traversal) which satisfies predicate `p`, or None if none exists.

   Definition Classes
     TreeApi

10. #### abstract def forAll(p: (Universe.Tree) ⇒ Boolean): Boolean

    Do all parts of this tree satisfy predicate `p`?

    Do all parts of this tree satisfy predicate `p`?

    Definition Classes
      TreeApi

11. #### abstract def foreach(f: (Universe.Tree) ⇒ Unit): Unit

    Apply `f` to each subtree

    Apply `f` to each subtree

    Definition Classes
      TreeApi

12. #### abstract def isDef: Boolean

    Does this tree represent a definition? (of a method, of a class, etc)

    Does this tree represent a definition? (of a method, of a class, etc)

    Definition Classes
      TreeApi

13. #### abstract def isEmpty: Boolean

    Is this tree one of the empty trees?

    Is this tree one of the empty trees?

    Empty trees are: the `EmptyTree` null object and `TypeTree` instances that don't carry a type.

    Definition Classes
      TreeApi
    See also

      `canHaveAttrs`

14. #### abstract def isTerm: Boolean

    The canonical way to test if a Tree represents a term.

    The canonical way to test if a Tree represents a term.

    Definition Classes
      TreeApi

15. #### abstract def isType: Boolean

    The canonical way to test if a Tree represents a type.

    The canonical way to test if a Tree represents a type.

    Definition Classes
      TreeApi

16. #### abstract def name: Universe.TermName

    The underlying name.

    The underlying name. For example, the `List` part of `Ident(TermName("List"))`.

    Definition Classes
      LabelDefApi → DefTreeApi → NameTreeApi

17. #### abstract def nonEmpty: Boolean

    Is this tree not an empty tree?

    Is this tree not an empty tree?

    Definition Classes
      TreeApi
    See also

      `isEmpty`

18. #### abstract def orElse(alt: ⇒ Universe.Tree): Universe.Tree

    Provides an alternate if tree is empty

    Provides an alternate if tree is empty

    alt

      The alternate tree

    returns

      If this tree is non empty, this tree, otherwise `alt`.

    Definition Classes
      TreeApi

19. #### abstract def params: List[Universe.Ident]

    Label's parameters - names that can be used in the body of the label.

    Label's parameters - names that can be used in the body of the label. See the example for scala.reflect.api.Trees#LabelDefExtractor.

20. #### abstract def pos: Universe.Position

    Position of the tree.

    Position of the tree.

    Definition Classes
      TreeApi

21. #### abstract def productArity: Int

    Definition Classes
      Product

22. #### abstract def productElement(n: Int): Any

    Definition Classes
      Product

23. #### abstract def rhs: Universe.Tree

    The body of the label.

    The body of the label. See the example for scala.reflect.api.Trees#LabelDefExtractor.

24. #### abstract def symbol: Universe.Symbol

    Symbol of the tree.

    Symbol of the tree.

    For most trees symbol is `null`. In `SymTree`s, it is overridden and implemented with a var, initialized to `NoSymbol`.

    Trees which are not `SymTree`s but which carry symbols do so by overriding `def symbol` to forward it elsewhere. Examples:

    - `Super(qual, _)` has `qual`'s symbol,
    - `Apply(fun, args)` has `fun`'s symbol,
    - `TypeApply(fun, args)` has `fun`'s symbol,
    - `AppliedTypeTree(tpt, args)` has `tpt`'s symbol,
    - `TypeTree(tpe)` has `tpe`'s `typeSymbol`, if `tpe != null`.
    Definition Classes
      SymTreeApi → TreeApi

25. #### abstract def tpe: Universe.Type

    Type of the tree.

    Type of the tree.

    Upon creation most trees have their `tpe` set to `null`. Types are typically assigned to trees during typechecking. Some node factory methods set `tpe` immediately after creation.

    When the typechecker encounters a tree with a non-null tpe, it will assume it to be correct and not check it again. This means one has to be careful not to erase the `tpe` field of subtrees.

    Definition Classes
      TreeApi

26. #### abstract def withFilter(f: (Universe.Tree) ⇒ Boolean): List[Universe.Tree]

    Find all subtrees matching predicate `p`.

    Find all subtrees matching predicate `p`. Same as `filter`

    Definition Classes
      TreeApi

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

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

   Implicit information
     This member is added by an implicit conversion from Universe.LabelDefApi to ArrowAssoc[Universe.LabelDefApi] 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 clone(): AnyRef

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

8. #### def ensuring(cond: (Universe.LabelDefApi) ⇒ Boolean, msg: ⇒ Any): Universe.LabelDefApi

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

9. #### def ensuring(cond: (Universe.LabelDefApi) ⇒ Boolean): Universe.LabelDefApi

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

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

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

11. #### def ensuring(cond: Boolean): Universe.LabelDefApi

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

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

    Definition Classes
      AnyRef

13. #### def equals(arg0: Any): Boolean

    Definition Classes
      AnyRef → Any

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

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

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

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

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

    Definition Classes
      AnyRef → Any

17. #### def hashCode(): Int

    Definition Classes
      AnyRef → Any

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

    Definition Classes
      Any

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

    Definition Classes
      AnyRef

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

    Definition Classes
      AnyRef

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

    Definition Classes
      AnyRef

22. #### def productIterator: Iterator[Any]

    Definition Classes
      Product

23. #### def productPrefix: String

    Definition Classes
      Product

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

    Definition Classes
      AnyRef

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

    Obtains string representation of a tree

    Obtains string representation of a tree

    Definition Classes
      TreeApi → AnyRef → Any

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

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

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

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

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

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

29. #### def →[B](y: B): (Universe.LabelDefApi, B)

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

### Inherited from Universe.TermTreeApi

### Inherited from Universe.DefTreeApi

### Inherited from Universe.NameTreeApi

### Inherited from Universe.SymTreeApi

### Inherited from Universe.TreeApi

### Inherited from Product

### Inherited from Equals

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd from Universe.LabelDefApi to any2stringadd[Universe.LabelDefApi]

### Inherited by implicit conversion StringFormat from Universe.LabelDefApi to StringFormat[Universe.LabelDefApi]

### Inherited by implicit conversion Ensuring from Universe.LabelDefApi to Ensuring[Universe.LabelDefApi]

### Inherited by implicit conversion ArrowAssoc from Universe.LabelDefApi to ArrowAssoc[Universe.LabelDefApi]

### Ungrouped