Scala Compiler2.12.21 < 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
-  package parser
  Definition Classes
    ast
-  trait Parsers extends Scanners with MarkupParsers with ParsersCommon

  Performs the following context-free rewritings:

  Performs the following context-free rewritings:

  - Places all pattern variables in Bind nodes. In a pattern, for identifiers `x`:

                      x  => x @ _
                    x:T  => x @ (_ : T)

  - Removes pattern definitions (PatDef's) as follows: If pattern is a simple (typed) identifier:

               val x = e     ==>  val x = e
               val x: T = e  ==>  val x: T = e

  if there are no variables in pattern

             val p = e  ==>  e match (case p => ())

  if there is exactly one variable in pattern

             val x_1 = e match (case p => (x_1))

  if there is more than one variable in pattern

             val p = e  ==>  private synthetic val t$ = e match (case p => (x_1, ..., x_N))
                             val x_1 = t$._1
                             ...
                             val x_N = t$._N

  - Removes function types as follows:

             (argtpes) => restpe   ==>   scala.Function_n[argtpes, restpe]

  - Wraps naked case definitions in a match as follows:

             { cases }   ==>   (x => x.match {cases}), except when already argument to match

  Definition Classes
    parser
-  abstract class Parser extends ParserCommon
  Definition Classes
    Parsers
- InfixMode
- ParserTreeBuilder
- PatternContextSensitive
- SeqContextSensitive
- noSeq
- outPattern
- seqOK
- xmlSeqOK

t

scala.tools.nsc.ast.parser.Parsers.Parser

# PatternContextSensitive 

###

#### trait PatternContextSensitive extends AnyRef

Methods which implicitly propagate the context in which they were called: either in a pattern context or not. Formerly, this was threaded through numerous methods as boolean isPattern.

Source
  Parsers.scala

Linear Supertypes
AnyRef, Any
Known Subclasses
SeqContextSensitive, noSeq, outPattern, seqOK, xmlSeqOK
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Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. PatternContextSensitive
2. AnyRef
3. Any

Implicitly

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

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Visibility

1. Public
2. All

### Abstract Value Members

1.  abstract def argType(): Global.Tree

       ArgType       ::=  Type

2.  abstract def functionArgType(): Global.Tree

### 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
     This member is added by an implicit conversion from PatternContextSensitive to any2stringadd[PatternContextSensitive] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
4.  def ->[B](y: B): (PatternContextSensitive, B)
   Implicit
     This member is added by an implicit conversion from PatternContextSensitive to ArrowAssoc[PatternContextSensitive] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
5.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
6.  def andType(tpt: Global.Tree): Global.Tree
7.  def annotType(): Global.Tree

       AnnotType        ::=  SimpleType {Annotation}

8.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
9.  def clone(): AnyRef
   Attributes
     protected[lang]
   Definition Classes
     AnyRef
   Annotations
     @throws( ... ) @native()
10.  def compoundType(): Global.Tree

        CompoundType ::= AnnotType {with AnnotType} [Refinement]
                      |  Refinement

11.  def compoundTypeRest(t: Global.Tree): Global.Tree
12.  def ensuring(cond: (PatternContextSensitive) ⇒ Boolean, msg: ⇒ Any): PatternContextSensitive
    Implicit
      This member is added by an implicit conversion from PatternContextSensitive to Ensuring[PatternContextSensitive] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
13.  def ensuring(cond: (PatternContextSensitive) ⇒ Boolean): PatternContextSensitive
    Implicit
      This member is added by an implicit conversion from PatternContextSensitive to Ensuring[PatternContextSensitive] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
14.  def ensuring(cond: Boolean, msg: ⇒ Any): PatternContextSensitive
    Implicit
      This member is added by an implicit conversion from PatternContextSensitive to Ensuring[PatternContextSensitive] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
15.  def ensuring(cond: Boolean): PatternContextSensitive
    Implicit
      This member is added by an implicit conversion from PatternContextSensitive to Ensuring[PatternContextSensitive] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
16.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
17.  def equals(arg0: Any): Boolean
    Definition Classes
      AnyRef → Any
18.  def finalize(): Unit
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
19.  def functionTypes(): List[Global.Tree]
20.  final def getClass(): Class[_]
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
21.  def hashCode(): Int
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
22.  def infixType(mode: InfixMode.Value): Global.Tree

        InfixType ::= CompoundType {id [nl] CompoundType}

23.  def infixTypeRest(t: Global.Tree, mode: InfixMode.Value): Global.Tree
24.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
25.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
26.  final def notify(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
27.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
28.  def simpleType(): Global.Tree

        SimpleType       ::=  SimpleType TypeArgs
                           |  SimpleType `#' Id
                           |  StableId
                           |  Path `.' type
                           |  `(' Types `)'
                           |  WildcardType

29.  def simpleTypeRest(t: Global.Tree): Global.Tree
30.  final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
      AnyRef
31.  def toString(): String
    Definition Classes
      AnyRef → Any
32.  def typ(): Global.Tree

        Type ::= InfixType `=>' Type
               | `(' [`=>' Type] `)' `=>' Type
               | InfixType [ExistentialClause]
        ExistentialClause ::= forSome `{' ExistentialDcl {semi ExistentialDcl}} `}'
        ExistentialDcl    ::= type TypeDcl | val ValDcl

33.  def typeArgs(): List[Global.Tree]

        TypeArgs    ::= `[' ArgType {`,' ArgType} `]'

34.  def types(): List[Global.Tree]

        Types ::= Type {`,' Type}

35.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
36.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
37.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... ) @native()
38.  def →[B](y: B): (PatternContextSensitive, B)
    Implicit
      This member is added by an implicit conversion from PatternContextSensitive to ArrowAssoc[PatternContextSensitive] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc

### Deprecated Value Members

1.  def formatted(fmtstr: String): String
   Implicit
     This member is added by an implicit conversion from PatternContextSensitive to StringFormat[PatternContextSensitive] performed by method StringFormat in scala.Predef.
   Definition Classes
     StringFormat
   Annotations
     @deprecated @inline()
   Deprecated

     (Since version 2.12.16) Use `formatString.format(value)` instead of `value.formatted(formatString)`, or use the `f""` string interpolator. In Java 15 and later, `formatted` resolves to the new method in String which has reversed parameters.

### Inherited from AnyRef

### Inherited from Any

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

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

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

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

### Ungrouped