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
-  package xml
  Definition Classes
    parser
- BracePair
- BracePatch
- Cbuf
- Change
- CommonTokens
- Deletion
- Insertion
- MarkupParsers
- Parsers
- ParsersCommon
- Patch
- Scanners
- ScannersCommon
- SymbolicXMLBuilder
- SyntaxAnalyzer
- Tokens
- TreeBuilder

t

scala.tools.nsc.ast.parser

# Parsers 

###

#### trait Parsers extends Scanners with MarkupParsers with ParsersCommon

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

Self Type
  Parsers
Source
  Parsers.scala

Linear Supertypes
ParsersCommon, MarkupParsers, Scanners, ScannersCommon, AnyRef, Any
Known Subclasses
CaseParser, ForEnumeratorParser, Parser, PatternParser, TermParser, TypeParser, SyntaxAnalyzer, ScaladocSyntaxAnalyzer
 
Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. Parsers
2. ParsersCommon
3. MarkupParsers
4. Scanners
5. ScannersCommon
6. AnyRef
7. 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

### Type Members

1.  class MarkupParser extends MarkupParserCommon
   Definition Classes
     MarkupParsers
2.  type Location = Int
3.  type Offset = Int

   Offset into source character array

   Offset into source character array

   Definition Classes
     ScannersCommon
4.  case class OpInfo(lhs: Global.Tree, operator: Global.TermName, targs: List[Global.Tree], offset: Parsers.Offset) extends Product with Serializable
5.  class OutlineParser extends SourceFileParser
6.  abstract class Parser extends ParserCommon
7.  class SourceFileParser extends Parser
8.  type Token = Int
   Definition Classes
     ScannersCommon
9.  class UnitParser extends SourceFileParser
10.  abstract class ParserCommon extends AnyRef

    This is now an abstract class, only to work around the optimizer: methods in traits are never inlined.

    This is now an abstract class, only to work around the optimizer: methods in traits are never inlined.

    Definition Classes
      ParsersCommon
11.  class MalformedInput extends Exception
    Definition Classes
      Scanners
12.  class ParensAnalyzer extends UnitScanner
    Definition Classes
      Scanners
13.  abstract class Scanner extends CharArrayReader with TokenData with ScannerData with ScannerCommon with DocScanner
    Definition Classes
      Scanners
14.  trait ScannerData extends TokenData with CharArrayReaderData

    An interface to most of mutable data in Scanner defined in TokenData and CharArrayReader (+ next, prev fields) with copyFrom functionality to backup/restore data (used by quasiquotes' lookingAhead).

    An interface to most of mutable data in Scanner defined in TokenData and CharArrayReader (+ next, prev fields) with copyFrom functionality to backup/restore data (used by quasiquotes' lookingAhead).

    Definition Classes
      Scanners
15.  class SourceFileScanner extends Scanner

    A scanner for a given source file not necessarily attached to a compilation unit.

    A scanner for a given source file not necessarily attached to a compilation unit. Useful for looking inside source files that are not currently compiled to see what's there

    Definition Classes
      Scanners
16.  trait TokenData extends CommonTokenData
    Definition Classes
      Scanners
17.  class UnitScanner extends SourceFileScanner

    A scanner over a given compilation unit

    A scanner over a given compilation unit

    Definition Classes
      Scanners
18.  trait CommonTokenData extends AnyRef
    Definition Classes
      ScannersCommon
19.  trait DocScanner extends AnyRef
    Definition Classes
      ScannersCommon
20.  trait ScannerCommon extends CommonTokenData
    Definition Classes
      ScannersCommon

### Abstract Value Members

1.  abstract val global: Global
   Definition Classes
     Parsers → ParsersCommon → Scanners → ScannersCommon

### Concrete Value Members

1.  object ConfusedAboutBracesControl extends Throwable with ControlThrowable with Product with Serializable
   Definition Classes
     MarkupParsers
2.  object MissingEndTagControl extends Throwable with ControlThrowable with Product with Serializable
   Definition Classes
     MarkupParsers
3.  object TruncatedXMLControl extends Throwable with ControlThrowable with Product with Serializable
   Definition Classes
     MarkupParsers
4.  final def !=(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
5.  final def ##(): Int
   Definition Classes
     AnyRef → Any
6.  def +(other: String): String
   Implicit
     This member is added by an implicit conversion from Parsers to any2stringadd[Parsers] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
7.  def ->[B](y: B): (Parsers, B)
   Implicit
     This member is added by an implicit conversion from Parsers to ArrowAssoc[Parsers] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
8.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
9.  final val InBlock: Location
10.  final val InTemplate: Location
11.  final val Local: Location
12.  lazy val ScalaValueClassNames: collection.Seq[Global.TypeName]
13.  final def asInstanceOf[T0]: T0
    Definition Classes
      Any
14.  def clone(): AnyRef
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( ... ) @native()
15.  def createKeywordArray(keywords: Seq[(Global.Name, Token)], defaultToken: Token): (Token, Array[Token])
    Definition Classes
      ScannersCommon
16.  def ensuring(cond: (Parsers) ⇒ Boolean, msg: ⇒ Any): Parsers
    Implicit
      This member is added by an implicit conversion from Parsers to Ensuring[Parsers] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
17.  def ensuring(cond: (Parsers) ⇒ Boolean): Parsers
    Implicit
      This member is added by an implicit conversion from Parsers to Ensuring[Parsers] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
18.  def ensuring(cond: Boolean, msg: ⇒ Any): Parsers
    Implicit
      This member is added by an implicit conversion from Parsers to Ensuring[Parsers] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
19.  def ensuring(cond: Boolean): Parsers
    Implicit
      This member is added by an implicit conversion from Parsers to Ensuring[Parsers] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
20.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
21.  def equals(arg0: Any): Boolean
    Definition Classes
      AnyRef → Any
22.  def finalize(): Unit
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
23.  final def getClass(): Class[_]
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
24.  def hashCode(): Int
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
25.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
26.  def literalUnit: Global.Literal
    Definition Classes
      ParsersCommon
27.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
28.  def newLiteral(const: Any): Global.Literal
    Definition Classes
      ParsersCommon
29.  final def notify(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
30.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
31.  final val softModifierNames: Set[Global.TermName]
    Definition Classes
      Scanners
32.  final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
      AnyRef
33.  def toString(): String
    Definition Classes
      AnyRef → Any
34.  final val token2name: Map[Int, Global.Name]
    Definition Classes
      Scanners
35.  def token2string(token: Token): String

    Returns the string representation of given token.

    Returns the string representation of given token.

    Definition Classes
      Scanners
36.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
37.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
38.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... ) @native()
39.  def →[B](y: B): (Parsers, B)
    Implicit
      This member is added by an implicit conversion from Parsers to ArrowAssoc[Parsers] 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 Parsers to StringFormat[Parsers] 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 ParsersCommon

### Inherited from MarkupParsers

### Inherited from Scanners

### Inherited from ScannersCommon

### Inherited from AnyRef

### Inherited from Any

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

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

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

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

### Ungrouped