Scala Compiler2.12.21 < Back
 

# 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

# SeqContextSensitive 

###

#### trait SeqContextSensitive extends PatternContextSensitive

Methods which implicitly propagate whether the initial call took place in a context where sequences are allowed. Formerly, this was threaded through methods as boolean seqOK.

Source
  Parsers.scala

Linear Supertypes
PatternContextSensitive, AnyRef, Any
Known Subclasses
noSeq, seqOK, xmlSeqOK
 
Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. SeqContextSensitive
2. PatternContextSensitive
3. AnyRef
4. 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

### Abstract Value Members

1.  abstract def isSequenceOK: Boolean

### 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 SeqContextSensitive to any2stringadd[SeqContextSensitive] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
4.  def ->[B](y: B): (SeqContextSensitive, B)
   Implicit
     This member is added by an implicit conversion from SeqContextSensitive to ArrowAssoc[SeqContextSensitive] 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
   Definition Classes
     PatternContextSensitive
7.  def annotType(): Global.Tree

       AnnotType        ::=  SimpleType {Annotation}

   Definition Classes
     PatternContextSensitive
8.  def argType(): Global.Tree

       ArgType       ::=  Type

   Definition Classes
     SeqContextSensitive → PatternContextSensitive
9.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
10.  def badPattern3(): Global.Tree
11.  def clone(): AnyRef
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( ... ) @native()
12.  def compoundType(): Global.Tree

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

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

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

    Definition Classes
      PatternContextSensitive
26.  def infixTypeRest(t: Global.Tree, mode: InfixMode.Value): Global.Tree
    Definition Classes
      PatternContextSensitive
27.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
28.  def isXML: Boolean
29.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
30.  final def notify(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
31.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
32.  def pattern(): Global.Tree

        Pattern  ::=  Pattern1 { `|' Pattern1 }
        SeqPattern ::= SeqPattern1 { `|' SeqPattern1 }

33.  def pattern1(): Global.Tree

        Pattern1    ::= boundvarid `:' TypePat
                      |  `_' `:' TypePat
                      |  Pattern2
        SeqPattern1 ::= boundvarid `:' TypePat
                      |  `_' `:' TypePat
                      |  [SeqPattern2]

34.  def pattern2(): Global.Tree

        Pattern2    ::=  id  @ Pattern3
                      |  `_' @ Pattern3
                      |   Pattern3

35.  def pattern3(): Global.Tree

        Pattern3    ::= SimplePattern
                      |  SimplePattern {Id [nl] SimplePattern}

36.  def patterns(): List[Global.Tree]

        Patterns ::= Pattern { `,' Pattern }
        SeqPatterns ::= SeqPattern { `,' SeqPattern }

37.  def simplePattern(onError: () ⇒ Global.Tree): Global.Tree
38.  def simplePattern(): Global.Tree

        SimplePattern    ::= varid
                          |  `_'
                          |  literal
                          |  XmlPattern
                          |  StableId  /[TypeArgs]/ [`(' [Patterns] `)']
                          |  StableId  [`(' [Patterns] `)']
                          |  StableId  [`(' [Patterns] `,' [varid `@'] `_' `*' `)']
                          |  `(' [Patterns] `)'

    XXX: Hook for IDE

39.  def simpleType(): Global.Tree

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

    Definition Classes
      PatternContextSensitive
40.  def simpleTypeRest(t: Global.Tree): Global.Tree
    Definition Classes
      PatternContextSensitive
41.  final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
      AnyRef
42.  def toString(): String
    Definition Classes
      AnyRef → Any
43.  def typ(): Global.Tree

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

    Definition Classes
      PatternContextSensitive
44.  def typeArgs(): List[Global.Tree]

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

    Definition Classes
      PatternContextSensitive
45.  def types(): List[Global.Tree]

        Types ::= Type {`,' Type}

    Definition Classes
      PatternContextSensitive
46.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
47.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
48.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... ) @native()
49.  def →[B](y: B): (SeqContextSensitive, B)
    Implicit
      This member is added by an implicit conversion from SeqContextSensitive to ArrowAssoc[SeqContextSensitive] 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 SeqContextSensitive to StringFormat[SeqContextSensitive] 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 PatternContextSensitive

### Inherited from AnyRef

### Inherited from Any

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

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

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

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

### Ungrouped