Scala Compiler2.13.17 < 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 typechecker
  Definition Classes
    nsc
-  trait Contexts extends AnyRef

  Definition Classes
    typechecker
- Context
- ContextReporter
- ImportContext
- ImportInfo
- NoContext

c

scala.tools.nsc.typechecker.Contexts

# ContextReporter

###

#### abstract class ContextReporter extends AnyRef

A reporter for use during type checking. It has multiple modes for handling errors.

The default (immediate mode) is to send the error to the global reporter. When switched into buffering mode via makeBuffering, errors and warnings are buffered and not be reported (there's a special case for ambiguity errors for some reason: those are force to the reporter when context.ambiguousErrors, or else they are buffered -- TODO: can we simplify this?)

When using the type checker after typers, an error results in a TypeError being thrown. TODO: get rid of this mode.

To handle nested contexts, reporters share buffers. TODO: only buffer in BufferingReporter, emit immediately in ImmediateReporter

Source
  Contexts.scala

Linear Supertypes
AnyRef, Any
Type Hierarchy
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Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. ContextReporter
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. Protected

### Instance Constructors

1.  new ContextReporter(_errorBuffer: LinkedHashSet[(Contexts.this)#AbsTypeError] = null, _warningBuffer: LinkedHashSet[(Contexts.this)#ContextWarning] = null)

### Abstract Value Members

1.  abstract def error(pos: Global.Position, msg: String, actions: List[CodeAction]): Unit

### 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 (Contexts.this)#ContextReporter toany2stringadd[(Contexts.this)#ContextReporter] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
4.  def ->[B](y: B): ((Contexts.this)#ContextReporter, B)
   Implicit
     This member is added by an implicit conversion from (Contexts.this)#ContextReporter toArrowAssoc[(Contexts.this)#ContextReporter] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
5.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
6.  def addDiagString(msg: String)(implicit context: (Contexts.this)#Context): String
   Attributes
     protected
7.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
8.  final def clearAll(): Unit
9.  final def clearAllErrors(): Unit
10.  def clone(): AnyRef
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.CloneNotSupportedException]) @native()
11.  def echo(pos: Global.Position, msg: String): Unit
12.  def echo(msg: String): Unit
13.  final def emitWarnings(): Unit
14.  def ensuring(cond: ((Contexts.this)#ContextReporter) => Boolean, msg: => Any): (Contexts.this)#ContextReporter
    Implicit
      This member is added by an implicit conversion from (Contexts.this)#ContextReporter toEnsuring[(Contexts.this)#ContextReporter] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
15.  def ensuring(cond: ((Contexts.this)#ContextReporter) => Boolean): (Contexts.this)#ContextReporter
    Implicit
      This member is added by an implicit conversion from (Contexts.this)#ContextReporter toEnsuring[(Contexts.this)#ContextReporter] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
16.  def ensuring(cond: Boolean, msg: => Any): (Contexts.this)#ContextReporter
    Implicit
      This member is added by an implicit conversion from (Contexts.this)#ContextReporter toEnsuring[(Contexts.this)#ContextReporter] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
17.  def ensuring(cond: Boolean): (Contexts.this)#ContextReporter
    Implicit
      This member is added by an implicit conversion from (Contexts.this)#ContextReporter toEnsuring[(Contexts.this)#ContextReporter] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
18.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
19.  def equals(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef → Any
20.  final def errorAndDumpIfDebug(pos: Global.Position, msg: String, actions: List[CodeAction]): Unit
21.  final def errorBuffer: LinkedHashSet[(Contexts.this)#AbsTypeError]
    Attributes
      protected
22.  final def errors: Seq[(Contexts.this)#AbsTypeError]
23.  def finalize(): Unit
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.Throwable])
24.  final def firstError: Option[(Contexts.this)#AbsTypeError]
25.  final def getClass(): Class[_ <: AnyRef]
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
26.  def handleSuppressedAmbiguous(err: (Contexts.this)#AbsAmbiguousTypeError): Unit
    Attributes
      protected
27.  final def hasErrors: Boolean
28.  def hashCode(): Int
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
29.  def isBuffering: Boolean
30.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
31.  def isThrowing: Boolean
32.  def issue(err: (Contexts.this)#AbsTypeError)(implicit context: (Contexts.this)#Context): Unit
33.  final def issueAmbiguousError(err: (Contexts.this)#AbsAmbiguousTypeError)(implicit context: (Contexts.this)#Context): Unit

    Emit an ambiguous error according to context.ambiguousErrors

    Emit an ambiguous error according to context.ambiguousErrors

    - when true, use global.reporter regardless of whether we're buffering (TODO: can we change this?)
    - else, let this context reporter decide
34.  def makeBuffering: (Contexts.this)#ContextReporter
35.  def makeImmediate: (Contexts.this)#ContextReporter
36.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
37.  final def notify(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
38.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
39.  final def propagateErrorsTo[T](target: (Contexts.this)#ContextReporter): Unit
40.  def propagateImplicitTypeErrorsTo(target: (Contexts.this)#ContextReporter): Unit
41.  def reportFirstDivergentError(fun: Global.Tree, param: Global.Symbol, paramTp: Global.Type)(implicit context: (Contexts.this)#Context): Unit
42.  def retainDivergentErrorsExcept(saved: (Contexts.this)#DivergentImplicitTypeError): LinkedHashSet[(Contexts.this)#AbsTypeError]
43.  final def synchronized[T0](arg0: => T0): T0
    Definition Classes
      AnyRef
44.  def toString(): String
    Definition Classes
      AnyRef → Any
45.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
46.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
47.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException]) @native()
48.  def warning(pos: Global.Position, msg: String, category: WarningCategory, site: Global.Symbol, actions: List[CodeAction] = Nil): Unit
49.  final def warningBuffer: LinkedHashSet[(Contexts.this)#ContextWarning]
    Attributes
      protected
50.  final def warnings: Seq[(Contexts.this)#ContextWarning]
51.  final def withFreshErrorBuffer[T](expr: => T): T
    Annotations
      @inline()

### Deprecated Value Members

1.  def formatted(fmtstr: String): String
   Implicit
     This member is added by an implicit conversion from (Contexts.this)#ContextReporter toStringFormat[(Contexts.this)#ContextReporter] 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.

2.  def →[B](y: B): ((Contexts.this)#ContextReporter, B)
   Implicit
     This member is added by an implicit conversion from (Contexts.this)#ContextReporter toArrowAssoc[(Contexts.this)#ContextReporter] 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 AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd from(Contexts.this)#ContextReporter to any2stringadd[(Contexts.this)#ContextReporter]

### Inherited by implicit conversion StringFormat from(Contexts.this)#ContextReporter to StringFormat[(Contexts.this)#ContextReporter]

### Inherited by implicit conversion Ensuring from(Contexts.this)#ContextReporter to Ensuring[(Contexts.this)#ContextReporter]

### Inherited by implicit conversion ArrowAssoc from(Contexts.this)#ContextReporter to ArrowAssoc[(Contexts.this)#ContextReporter]

### Ungrouped