Scala Compiler2.13.1 < 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
- duplicateAndResetPos
- noSelfType
- noopTransformer
- pendingSuperCall
- 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. Protected

### 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[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[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 freeSyms: List[Global.FreeSymbol]
    Definition Classes
      TreeContextApiImpl
35.  def freeTerms: List[Global.FreeTermSymbol]
    Definition Classes
      TreeContextApiImpl
36.  def freeTypes: List[Global.FreeTypeSymbol]
    Definition Classes
      TreeContextApiImpl
37.  def getAndRemoveAttachment[T](implicit arg0: ClassTag[T]): Option[T]
    Definition Classes
      Attachable
38.  final def getClass(): Class[_ <: AnyRef]
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
39.  def hasAttachment[T](implicit arg0: ClassTag[T]): Boolean
    Definition Classes
      Attachable
40.  def hasExistingSymbol: Boolean
    Definition Classes
      TreeContextApiImpl
41.  def hasSymbolField: Boolean
    Definition Classes
      Tree
42.  def hasSymbolWhich(f: (Global.Symbol) => Boolean): Boolean
    Definition Classes
      TreeContextApiImpl
43.  def hashCode(): Int
    Definition Classes
      Tree → AnyRef → Any
44.  val id: Int
    Definition Classes
      Tree
45.  def isDef: Boolean
    Definition Classes
      Tree → TreeApi
46.  def isEmpty: Boolean
    Definition Classes
      Tree → TreeApi
47.  def isErroneous: Boolean
    Definition Classes
      TreeContextApiImpl
48.  def isErrorTyped: Boolean
    Definition Classes
      TreeContextApiImpl
49.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
50.  def isTerm: Boolean
    Definition Classes
      Tree → TreeApi
51.  def isType: Boolean
    Definition Classes
      Tree → TreeApi
52.  def isTyped: Boolean
    Definition Classes
      TreeContextApiImpl
53.  def modifyType(f: (Global.Type) => Global.Type): Global.Tree
    Definition Classes
      TreeContextApiImpl
54.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
55.  def nonEmpty: Boolean
    Definition Classes
      Tree → TreeApi
56.  final def notify(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
57.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
58.  def orElse(alt: => Global.Tree): Global.Tree
    Definition Classes
      TreeContextApiImpl → TreeApi
59.  final def pos: Global.Position
    Definition Classes
      Tree → Attachable → TreeApi
60.  def pos_=(pos: Global.Position): Unit
    Definition Classes
      Attachable
61.  def productElementNames: Iterator[String]
    Definition Classes
      Product
62.  val rawatt: Attachments { type Pos = Trees.this.Position }
    Attributes
      protected
    Definition Classes
      Attachable
63.  def removeAttachment[T](implicit arg0: ClassTag[T]): Parens.this.type
    Definition Classes
      Attachable
64.  def setAttachments(attachments: Attachments { type Pos = Trees.this.Position }): Parens.this.type
    Definition Classes
      Attachable
65.  def setPos(newpos: Global.Position): Parens.this.type
    Definition Classes
      Attachable
66.  def setSymbol(sym: Global.Symbol): Parens.this.type
    Definition Classes
      Tree
67.  def setType(tp: Global.Type): Parens.this.type
    Definition Classes
      Tree
68.  def shallowDuplicate: Global.Tree
    Definition Classes
      TreeContextApiImpl
69.  def shortClass: String
    Definition Classes
      TreeContextApiImpl
70.  def substituteSymbols(from: List[Global.Symbol], to: List[Global.Symbol]): Global.Tree
    Definition Classes
      TreeContextApiImpl
71.  def substituteThis(clazz: Global.Symbol, to: => Global.Tree): Global.Tree
    Definition Classes
      TreeContextApiImpl
72.  def substituteTypes(from: List[Global.Symbol], to: List[Global.Type]): Global.Tree
    Definition Classes
      TreeContextApiImpl
73.  def summaryString: String
    Definition Classes
      TreeContextApiImpl
74.  def symbol: Global.Symbol
    Definition Classes
      Tree → TreeApi
75.  def symbol_=(sym: Global.Symbol): Unit
    Definition Classes
      Tree
76.  final def synchronized[T0](arg0: => T0): T0
    Definition Classes
      AnyRef
77.  def toString(): String
    Definition Classes
      TreeApi → AnyRef → Any
78.  final def tpe: Global.Type
    Definition Classes
      Tree → TreeApi
79.  def transform(transformer: Global.Transformer): Global.Tree
    Definition Classes
      TreeContextApiImpl
80.  def traverse(traverser: Global.Traverser): Unit
    Definition Classes
      Parens → TreeContextApiImpl
81.  def updateAttachment[T](attachment: T)(implicit arg0: ClassTag[T]): Parens.this.type
    Definition Classes
      Attachable
82.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
83.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
84.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException]) @native()
85.  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