Scala Compiler2.13.0 < 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 ast
  Definition Classes
    nsc
-  trait Trees extends reflect.internal.Trees
  Definition Classes
    ast
- Alternative
- Alternative
- AlternativeApi
- AlternativeExtractor
- Annotated
- Annotated
- AnnotatedApi
- AnnotatedExtractor
- AppliedTypeTree
- AppliedTypeTree
- AppliedTypeTreeApi
- AppliedTypeTreeExtractor
- Apply
- Apply
- ApplyApi
- ApplyDynamic
- ApplyExtractor
- ApplyImplicitView
- ApplyToImplicitArgs
- ArrayValue
- Assign
- Assign
- AssignApi
- AssignExtractor
- Bind
- Bind
- BindApi
- BindExtractor
- Block
- Block
- BlockApi
- BlockExtractor
- CannotHaveAttrs
- CaseDef
- CaseDef
- CaseDefApi
- CaseDefExtractor
- ChangeOwnerTraverser
- ClassDef
- ClassDef
- ClassDefApi
- ClassDefExtractor
- CollectTreeTraverser
- CompoundTypeTree
- CompoundTypeTree
- CompoundTypeTreeApi
- CompoundTypeTreeExtractor
- DefDef
- DefDef
- DefDefApi
- DefDefExtractor
- DefTree
- DefTreeApi
- DocDef
- EmptyTree
- ExistentialTypeTree
- ExistentialTypeTree
- ExistentialTypeTreeApi
- ExistentialTypeTreeExtractor
- FilterTreeTraverser
- FindTreeTraverser
- ForeachPartialTreeTraverser
- ForeachTreeTraverser
- Function
- Function
- FunctionApi
- FunctionExtractor
- GenericApply
- GenericApplyApi
- Ident
- Ident
- IdentApi
- IdentExtractor
- If
- If
- IfApi
- IfExtractor
- ImplDef
- ImplDefApi
- Import
- Import
- ImportApi
- ImportExtractor
- ImportSelector
- ImportSelector
- ImportSelectorApi
- ImportSelectorExtractor
- InjectDerivedValue
- InternalTransformer
- InternalTraverser
- InternalTreeCopierOps
- LabelDef
- LabelDef
- LabelDefApi
- LabelDefExtractor
- LazyTreeCopier
- Literal
- Literal
- LiteralApi
- LiteralExtractor
- LocalOwnersTraverser
- Match
- Match
- MatchApi
- MatchExtractor
- MemberDef
- MemberDefApi
- MethodValue
- Modifiers
- Modifiers
- ModifiersApi
- ModifiersExtractor
- ModuleDef
- ModuleDef
- ModuleDefApi
- ModuleDefExtractor
- NameTree
- NameTreeApi
- NamedArg
- NamedArg
- NamedArgApi
- NamedArgExtractor
- New
- New
- NewApi
- NewExtractor
- PackageDef
- PackageDef
- PackageDefApi
- PackageDefExtractor
- Parens
- PostfixSelect
- RefTree
- RefTree
- RefTreeApi
- RefTreeExtractor
- ReferenceToBoxed
- ReferenceToBoxed
- Return
- Return
- ReturnApi
- ReturnExtractor
- Select
- Select
- SelectApi
- SelectExtractor
- SelectFromArray
- SelectFromTypeTree
- SelectFromTypeTree
- SelectFromTypeTreeApi
- SelectFromTypeTreeExtractor
- SingletonTypeTree
- SingletonTypeTree
- SingletonTypeTreeApi
- SingletonTypeTreeExtractor
- Star
- Star
- StarApi
- StarExtractor
- StrictTreeCopier
- Super
- Super
- SuperApi
- SuperExtractor
- SymTree
- SymTreeApi
- Template
- Template
- TemplateApi
- TemplateExtractor
- TermTree
- TermTreeApi
- This
- This
- ThisApi
- ThisExtractor
- ThisSubstituter
- Throw
- Throw
- ThrowApi
- ThrowExtractor
- Transformer
- Traverser
- Tree
- TreeApi
- TreeContextApiImpl
- TreeCopier
- TreeCopierOps
- TreeReplacer
- TreeStackTraverser
- TreeSubstituter
- TreeSymSubstTraverser
- TreeSymSubstituter
- TreeTypeSubstituter
- Try
- Try
- TryApi
- TryExtractor
- TypTree
- TypTreeApi
- TypeApply
- TypeApply
- TypeApplyApi
- TypeApplyExtractor
- TypeBoundsTree
- TypeBoundsTree
- TypeBoundsTreeApi
- TypeBoundsTreeExtractor
- TypeDef
- TypeDef
- TypeDefApi
- TypeDefExtractor
- TypeMapTreeSubstituter
- TypeTree
- TypeTree
- TypeTreeApi
- TypeTreeExtractor
- TypeTreeWithDeferredRefCheck
- Typed
- Typed
- TypedApi
- TypedExtractor
- UnApply
- UnApply
- UnApplyApi
- UnApplyExtractor
- ValDef
- ValDef
- ValDefApi
- ValDefExtractor
- ValOrDefDef
- ValOrDefDef
- ValOrDefDefApi
- noSelfType
- noopTransformer
- pendingSuperCall
- resetPos
- treeInfo

c

scala.tools.nsc.ast.Trees

# Parens

###

#### case class Parens(args: List[Global.Tree]) extends Global.Tree with Product with Serializable

Only used during parsing

Source
  Trees.scala

Linear Supertypes
java.io.Serializable, Global.Tree, Global.Attachable, Global.TreeContextApiImpl, Global.TreeApi, Product, Equals, AnyRef, Any
Type Hierarchy

Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. Parens
2. Serializable
3. Tree
4. Attachable
5. TreeContextApiImpl
6. TreeApi
7. Product
8. Equals
9. AnyRef
10. Any

Implicitly

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

1. Hide All
2. Show All

Visibility

1. Public
2. All

### Instance Constructors

1.  new Parens(args: List[Global.Tree])

### 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 Global.Parens toany2stringadd[Global.Parens] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
4.  def ->[B](y: B): (Global.Parens, B)
   Implicit
     This member is added by an implicit conversion from Global.Parens toArrowAssoc[Global.Parens] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
5.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
6.  val args: List[Global.Tree]
7.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
8.  def attachments: Attachments { type Pos = Trees.this.Position }
   Definition Classes
     Attachable
9.  def canHaveAttrs: Boolean
   Definition Classes
     Tree → TreeApi
10.  def changeOwner(from: Global.Symbol, to: Global.Symbol): Global.Tree
    Definition Classes
      TreeContextApiImpl
11.  def changeOwner(pairs: (Global.Symbol, Global.Symbol)*): Global.Tree
    Definition Classes
      TreeContextApiImpl
12.  def children: List[Global.Tree]
    Definition Classes
      TreeContextApiImpl → TreeApi
13.  def clearType(): Parens.this.type
    Definition Classes
      Tree
14.  def clone(): AnyRef
    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.CloneNotSupportedException]) @native()
15.  def collect[T](pf: PartialFunction[Global.Tree, T]): List[T]
    Definition Classes
      TreeContextApiImpl → TreeApi
16.  def correspondsStructure(that: Global.Tree)(f: (Global.Tree, Global.Tree) => Boolean): Boolean
    Definition Classes
      TreeContextApiImpl
17.  def defineType(tp: Global.Type): Parens.this.type
    Definition Classes
      Tree
18.  def duplicate: Parens.this.type
    Definition Classes
      Tree → TreeApi
19.  def ensuring(cond: (Global.Parens) => Boolean, msg: => Any): Global.Parens
    Implicit
      This member is added by an implicit conversion from Global.Parens toEnsuring[Global.Parens] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
20.  def ensuring(cond: (Global.Parens) => Boolean): Global.Parens
    Implicit
      This member is added by an implicit conversion from Global.Parens toEnsuring[Global.Parens] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
21.  def ensuring(cond: Boolean, msg: => Any): Global.Parens
    Implicit
      This member is added by an implicit conversion from Global.Parens toEnsuring[Global.Parens] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
22.  def ensuring(cond: Boolean): Global.Parens
    Implicit
      This member is added by an implicit conversion from Global.Parens toEnsuring[Global.Parens] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
23.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
24.  def equals(that: Any): Boolean
    Definition Classes
      Tree → Equals → AnyRef → Any
25.  def equalsStructure(that: Global.Tree): Boolean
    Definition Classes
      TreeContextApiImpl → TreeApi
26.  def exists(p: (Global.Tree) => Boolean): Boolean
    Definition Classes
      TreeContextApiImpl → TreeApi
27.  def filter(f: (Global.Tree) => Boolean): List[Global.Tree]
    Definition Classes
      TreeContextApiImpl → TreeApi
28.  def finalize(): Unit
    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.Throwable])
29.  def find(p: (Global.Tree) => Boolean): Option[Global.Tree]
    Definition Classes
      TreeContextApiImpl → TreeApi
30.  def forAll(p: (Global.Tree) => Boolean): Boolean
    Definition Classes
      TreeContextApiImpl → TreeApi
31.  def foreach(f: (Global.Tree) => Unit): Unit
    Definition Classes
      TreeContextApiImpl → TreeApi
32.  def foreachPartial(pf: PartialFunction[Global.Tree, Global.Tree]): Unit
    Definition Classes
      TreeContextApiImpl
33.  def formatted(fmtstr: String): String
    Implicit
      This member is added by an implicit conversion from Global.Parens toStringFormat[Global.Parens] performed by method StringFormat in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @inline()
34.  def freeTerms: List[Global.FreeTermSymbol]
    Definition Classes
      TreeContextApiImpl
35.  def freeTypes: List[Global.FreeTypeSymbol]
    Definition Classes
      TreeContextApiImpl
36.  def getAndRemoveAttachment[T](implicit arg0: ClassTag[T]): Option[T]
    Definition Classes
      Attachable
37.  final def getClass(): Class[_ <: AnyRef]
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
38.  def hasAttachment[T](implicit arg0: ClassTag[T]): Boolean
    Definition Classes
      Attachable
39.  def hasExistingSymbol: Boolean
    Definition Classes
      TreeContextApiImpl
40.  def hasSymbolField: Boolean
    Definition Classes
      Tree
41.  def hasSymbolWhich(f: (Global.Symbol) => Boolean): Boolean
    Definition Classes
      TreeContextApiImpl
42.  def hashCode(): Int
    Definition Classes
      Tree → AnyRef → Any
43.  val id: Int
    Definition Classes
      Tree
44.  def isDef: Boolean
    Definition Classes
      Tree → TreeApi
45.  def isEmpty: Boolean
    Definition Classes
      Tree → TreeApi
46.  def isErroneous: Boolean
    Definition Classes
      TreeContextApiImpl
47.  def isErrorTyped: Boolean
    Definition Classes
      TreeContextApiImpl
48.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
49.  def isTerm: Boolean
    Definition Classes
      Tree → TreeApi
50.  def isType: Boolean
    Definition Classes
      Tree → TreeApi
51.  def isTyped: Boolean
    Definition Classes
      TreeContextApiImpl
52.  def modifyType(f: (Global.Type) => Global.Type): Global.Tree
    Definition Classes
      TreeContextApiImpl
53.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
54.  def nonEmpty: Boolean
    Definition Classes
      Tree → TreeApi
55.  final def notify(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
56.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
57.  def orElse(alt: => Global.Tree): Global.Tree
    Definition Classes
      TreeContextApiImpl → TreeApi
58.  final def pos: Global.Position
    Definition Classes
      Tree → Attachable → TreeApi
59.  def pos_=(pos: Global.Position): Unit
    Definition Classes
      Attachable
60.  def productElementNames: Iterator[String]
    Definition Classes
      Product
61.  val rawatt: Attachments { type Pos = Trees.this.Position }
    Attributes
      protected
    Definition Classes
      Attachable
62.  def removeAttachment[T](implicit arg0: ClassTag[T]): Parens.this.type
    Definition Classes
      Attachable
63.  def setAttachments(attachments: Attachments { type Pos = Trees.this.Position }): Parens.this.type
    Definition Classes
      Attachable
64.  def setPos(newpos: Global.Position): Parens.this.type
    Definition Classes
      Attachable
65.  def setSymbol(sym: Global.Symbol): Parens.this.type
    Definition Classes
      Tree
66.  def setType(tp: Global.Type): Parens.this.type
    Definition Classes
      Tree
67.  def shallowDuplicate: Global.Tree
    Definition Classes
      TreeContextApiImpl
68.  def shortClass: String
    Definition Classes
      TreeContextApiImpl
69.  def substituteSymbols(from: List[Global.Symbol], to: List[Global.Symbol]): Global.Tree
    Definition Classes
      TreeContextApiImpl
70.  def substituteThis(clazz: Global.Symbol, to: => Global.Tree): Global.Tree
    Definition Classes
      TreeContextApiImpl
71.  def substituteTypes(from: List[Global.Symbol], to: List[Global.Type]): Global.Tree
    Definition Classes
      TreeContextApiImpl
72.  def summaryString: String
    Definition Classes
      TreeContextApiImpl
73.  def symbol: Global.Symbol
    Definition Classes
      Tree → TreeApi
74.  def symbol_=(sym: Global.Symbol): Unit
    Definition Classes
      Tree
75.  final def synchronized[T0](arg0: => T0): T0
    Definition Classes
      AnyRef
76.  def toString(): String
    Definition Classes
      TreeApi → AnyRef → Any
77.  final def tpe: Global.Type
    Definition Classes
      Tree → TreeApi
78.  def transform(transformer: Global.Transformer): Global.Tree
    Definition Classes
      TreeContextApiImpl
79.  def traverse(traverser: Global.Traverser): Unit
    Definition Classes
      Parens → TreeContextApiImpl
80.  def updateAttachment[T](attachment: T)(implicit arg0: ClassTag[T]): Parens.this.type
    Definition Classes
      Attachable
81.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
82.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
83.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException]) @native()
84.  def withFilter(f: (Global.Tree) => Boolean): List[Global.Tree]
    Definition Classes
      TreeContextApiImpl → TreeApi

### Deprecated Value Members

1.  def hasSymbol: Boolean
   Definition Classes
     Tree
   Annotations
     @deprecated
   Deprecated

     (Since version 2.11.0) use hasSymbolField

2.  def tpe_=(t: Global.Type): Unit
   Definition Classes
     Tree
   Annotations
     @deprecated
   Deprecated

     (Since version 2.11.0) use setType

3.  def →[B](y: B): (Global.Parens, B)
   Implicit
     This member is added by an implicit conversion from Global.Parens toArrowAssoc[Global.Parens] 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 java.io.Serializable

### Inherited from Global.Tree

### Inherited from Global.Attachable

### Inherited from Global.TreeContextApiImpl

### Inherited from Global.TreeApi

### Inherited from Product

### Inherited from Equals

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd fromGlobal.Parens to any2stringadd[Global.Parens]

### Inherited by implicit conversion StringFormat fromGlobal.Parens to StringFormat[Global.Parens]

### Inherited by implicit conversion Ensuring fromGlobal.Parens to Ensuring[Global.Parens]

### Inherited by implicit conversion ArrowAssoc fromGlobal.Parens to ArrowAssoc[Global.Parens]

### Ungrouped