scala.tools.nsc.typechecker.Contexts

# NoContext

###
Related Doc: package Contexts

#### object NoContext extends Analyzer.Context

Source
  Contexts.scala

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### Type Members

1. #### abstract class TryTwice extends AnyRef

   Try inference twice: once without views and once with views, unless views are already disabled.

   Try inference twice: once without views and once with views, unless views are already disabled.

   Definition Classes
     Context

### Value Members

1. #### final def !=(arg0: Any): Boolean

   Test two objects for inequality.

   Test two objects for inequality.

   returns

     `true` if !(this == that), false otherwise.

   Definition Classes
     AnyRef → Any

2. #### final def ##(): Int

   Equivalent to `x.hashCode` except for boxed numeric types and `null`.

   Equivalent to `x.hashCode` except for boxed numeric types and `null`. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For `null` returns a hashcode where `null.hashCode` throws a `NullPointerException`.

   returns

     a hash value consistent with ==

   Definition Classes
     AnyRef → Any

3. #### final def ==(arg0: Any): Boolean

   The expression `x == that` is equivalent to `if (x eq null) that eq null else x.equals(that)`.

   The expression `x == that` is equivalent to `if (x eq null) that eq null else x.equals(that)`.

   arg0

     the object to compare against this object for equality.

   returns

     `true` if the receiver object is equivalent to the argument; `false` otherwise.

   Definition Classes
     AnyRef → Any

4. #### def ambiguousErrors: Boolean

   Definition Classes
     Context

5. #### def apply(mask: ContextMode): Boolean

   Is this context in all modes in the given `mask`?

   Is this context in all modes in the given `mask`?

   Definition Classes
     Context

6. #### final def asInstanceOf[T0]: T0

   Cast the receiver object to be of type `T0`.

   Cast the receiver object to be of type `T0`.

   Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression `1.asInstanceOf[String]` will throw a `ClassCastException` at runtime, while the expression `List(1).asInstanceOf[List[String]]` will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.

   returns

     the receiver object.

   Definition Classes
     Any
   Exceptions thrown

     `ClassCastException` if the receiver object is not an instance of the erasure of type `T0`.

7. #### def bufferErrors: Boolean

   Definition Classes
     Context

8. #### def clone(): AnyRef

   Create a copy of the receiver object.

   Create a copy of the receiver object.

   The default implementation of the `clone` method is platform dependent.

   returns

     a copy of the receiver object.

   Attributes
     protected[java.lang]
   Definition Classes
     AnyRef
   Annotations
     @throws( ... )
   Note

     not specified by SLS as a member of AnyRef

9. #### var contextMode: ContextMode

   A bitmask containing all the boolean flags in a context, e.g.

   A bitmask containing all the boolean flags in a context, e.g. are implicit views enabled

   Definition Classes
     Context

10. #### def defaultModeForTyped: Mode

    Definition Classes
      Context

11. #### def deprecationWarning(pos: Global.Position, sym: Global.Symbol): Unit

    Definition Classes
      Context

12. #### def deprecationWarning(pos: Global.Position, sym: Global.Symbol, msg: String): Unit

    Definition Classes
      Context

13. #### val depth: Int

    Definition Classes
      NoContext → Context

14. #### var diagUsedDefaults: Boolean

    To enrich error messages involving default arguments.

    To enrich error messages involving default arguments. When extending the notion, group diagnostics in an object.

    Definition Classes
      Context

15. #### def echo(pos: Global.Position, msg: String): Unit

    Definition Classes
      Context

16. #### var enclClass: Analyzer.Context

    The next outer context whose tree is a template or package definition

    The next outer context whose tree is a template or package definition

    Definition Classes
      Context

17. #### def enclClassOrMethod: Analyzer.Context

    The next enclosing context (potentially `this`) that is owned by a class or method

    The next enclosing context (potentially `this`) that is owned by a class or method

    Definition Classes
      Context

18. #### var enclMethod: Analyzer.Context

    The next outer context whose tree is a method

    The next outer context whose tree is a method

    Definition Classes
      Context

19. #### def enclosingApply: Analyzer.Context

    ...or an Apply.

    ...or an Apply.

    Definition Classes
      Context

20. #### def enclosingCaseDef: Analyzer.Context

    The next enclosing context (potentially `this`) that has a `CaseDef` as a tree

    The next enclosing context (potentially `this`) that has a `CaseDef` as a tree

    Definition Classes
      Context

21. #### def enclosingContextChain: List[Analyzer.Context]

    Definition Classes
      NoContext → Context

22. #### def enclosingNonImportContext: Analyzer.Context

    Definition Classes
      Context

23. #### def enclosingSubClassContext(clazz: Global.Symbol): Analyzer.Context

    Return the closest enclosing context that defines a subclass of `clazz` or a companion object thereof, or `NoContext` if no such context exists.

    Return the closest enclosing context that defines a subclass of `clazz` or a companion object thereof, or `NoContext` if no such context exists.

    Definition Classes
      Context

24. #### def enrichmentEnabled: Boolean

    Definition Classes
      Context

25. #### def enrichmentEnabled_=(value: Boolean): Unit

    Definition Classes
      Context

26. #### final def eq(arg0: AnyRef): Boolean

    Tests whether the argument (`arg0`) is a reference to the receiver object (`this`).

    Tests whether the argument (`arg0`) is a reference to the receiver object (`this`).

    The `eq` method implements an equivalence relation on non-null instances of `AnyRef`, and has three additional properties:

    - It is consistent: for any non-null instances `x` and `y` of type `AnyRef`, multiple invocations of `x.eq(y)` consistently returns `true` or consistently returns `false`.
    - For any non-null instance `x` of type `AnyRef`, `x.eq(null)` and `null.eq(x)` returns `false`.
    - `null.eq(null)` returns `true`.

    When overriding the `equals` or `hashCode` methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (`o1 eq o2`), they should be equal to each other (`o1 == o2`) and they should hash to the same value (`o1.hashCode == o2.hashCode`).

    returns

      `true` if the argument is a reference to the receiver object; `false` otherwise.

    Definition Classes
      AnyRef

27. #### def equals(arg0: Any): Boolean

    The equality method for reference types.

    The equality method for reference types. Default implementation delegates to `eq`.

    See also `equals` in scala.Any.

    returns

      `true` if the receiver object is equivalent to the argument; `false` otherwise.

    Definition Classes
      AnyRef → Any

28. #### def error(pos: Global.Position, msg: String): Unit

    Issue/throw the given error message according to the current mode for error reporting.

    Issue/throw the given error message according to the current mode for error reporting.

    Definition Classes
      Context

29. #### def extractUndetparams(): List[Global.Symbol]

    Return and clear the undetermined type parameters

    Return and clear the undetermined type parameters

    Definition Classes
      Context

30. #### def featureWarning(pos: Global.Position, featureName: String, featureDesc: String, featureTrait: Global.Symbol, construct: ⇒ String = "", required: Boolean): Unit

    Definition Classes
      Context

31. #### def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

    The details of when and if the `finalize` method is invoked, as well as the interaction between `finalize` and non-local returns and exceptions, are all platform dependent.

    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
    Note

      not specified by SLS as a member of AnyRef

32. #### def firstImport: Option[Analyzer.ImportInfo]

    Equivalent to `imports.headOption`, but more efficient

    Equivalent to `imports.headOption`, but more efficient

    Definition Classes
      NoContext → Context

33. #### final def getClass(): Class[_]

    A representation that corresponds to the dynamic class of the receiver object.

    A representation that corresponds to the dynamic class of the receiver object.

    The nature of the representation is platform dependent.

    returns

      a representation that corresponds to the dynamic class of the receiver object.

    Definition Classes
      AnyRef → Any
    Note

      not specified by SLS as a member of AnyRef

34. #### def hashCode(): Int

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in scala.Any.

    returns

      the hash code value for this object.

    Definition Classes
      AnyRef → Any

35. #### def implicitsEnabled: Boolean

    Definition Classes
      Context

36. #### def implicitsEnabled_=(value: Boolean): Unit

    Definition Classes
      Context

37. #### def implicitss: List[List[Analyzer.ImplicitInfo]]

    Definition Classes
      NoContext → Context

38. #### def importedAccessibleSymbol(imp: Analyzer.ImportInfo, name: Global.Name): Global.Symbol

    The symbol with name `name` imported via the import in `imp`, if any such symbol is accessible from this context.

    The symbol with name `name` imported via the import in `imp`, if any such symbol is accessible from this context.

    Definition Classes
      Context

39. #### def imports: List[Analyzer.ImportInfo]

    The currently visible imports

    The currently visible imports

    Definition Classes
      NoContext → Context

40. #### def inConstructorSuffix: Boolean

    Definition Classes
      Context

41. #### def inConstructorSuffix_=(value: Boolean): Unit

    Definition Classes
      Context

42. #### def inPatAlternative: Boolean

    Definition Classes
      Context

43. #### def inPatAlternative_=(value: Boolean): Unit

    Definition Classes
      Context

44. #### def inReturnExpr: Boolean

    Definition Classes
      Context

45. #### def inSecondTry: Boolean

    Definition Classes
      Context

46. #### def inSecondTry_=(value: Boolean): Unit

    Definition Classes
      Context

47. #### def inSelfSuperCall: Boolean

    Definition Classes
      Context

48. #### def inSelfSuperCall_=(value: Boolean): Unit

    Definition Classes
      Context

49. #### final def inSilentMode(expr: ⇒ Boolean): Boolean

    Definition Classes
      Context
    Annotations
      @inline()

50. #### def inSuperInit: Boolean

    Definition Classes
      Context

51. #### def inSuperInit_=(value: Boolean): Unit

    Definition Classes
      Context

52. #### def inTypeConstructorAllowed: Boolean

    Definition Classes
      Context

53. #### def initRootContext(throwing: Boolean = false, checking: Boolean = false): Unit

    Use reporter (possibly buffered) for errors/warnings and enable implicit conversion *

    Use reporter (possibly buffered) for errors/warnings and enable implicit conversion *

    Definition Classes
      Context

54. #### def isAccessible(sym: Global.Symbol, pre: Global.Type, superAccess: Boolean = false): Boolean

    Is `sym` accessible as a member of `pre` in current context?

    Is `sym` accessible as a member of `pre` in current context?

    Definition Classes
      Context

55. #### def isInPackageObject(sym: Global.Symbol, pkg: Global.Symbol): Boolean

    Is `sym` defined in package object of package `pkg`? Since sym may be defined in some parent of the package object, we cannot inspect its owner only; we have to go through the info of the package object.

    Is `sym` defined in package object of package `pkg`? Since sym may be defined in some parent of the package object, we cannot inspect its owner only; we have to go through the info of the package object. However to avoid cycles we'll check what other ways we can before pushing that way.

    Definition Classes
      Context

56. #### final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object is `T0`.

    Test whether the dynamic type of the receiver object is `T0`.

    Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression `1.isInstanceOf[String]` will return `false`, while the expression `List(1).isInstanceOf[List[String]]` will return `true`. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.

    returns

      `true` if the receiver object is an instance of erasure of type `T0`; `false` otherwise.

    Definition Classes
      Any

57. #### def isNameInScope(name: Global.Name): Boolean

    Definition Classes
      Context

58. #### def isRootImport: Boolean

    Definition Classes
      Context

59. #### def lookup(name: Global.Name, expectedOwner: Global.Symbol): Global.Symbol

    Find a symbol in this context or one of its outers.

    Find a symbol in this context or one of its outers.

    Used to find symbols are owned by methods (or fields), they can't be found in some scope.

    Examples: companion module of classes owned by a method, default getter methods of nested methods. See NamesDefaults.scala

    Definition Classes
      Context

60. #### def lookupSymbol(name: Global.Name, qualifies: (Global.Symbol) ⇒ Boolean): Global.NameLookup

    Find the symbol of a simple name starting from this context.

    Find the symbol of a simple name starting from this context. All names are filtered through the "qualifies" predicate, the search continuing as long as no qualifying name is found.

    Definition Classes
      Context

61. #### def macrosEnabled: Boolean

    Definition Classes
      Context

62. #### def macrosEnabled_=(value: Boolean): Unit

    Definition Classes
      Context

63. #### def make(tree: Global.Tree, owner: Global.Symbol, scope: Global.Scope): Analyzer.Context

    Definition Classes
      Context

64. #### def make(tree: Global.Tree = tree, owner: Global.Symbol = owner, scope: Global.Scope = scope, unit: Global.CompilationUnit = unit, reporter: Analyzer.ContextReporter = this.reporter): Analyzer.Context

    Construct a child context.

    Construct a child context. The parent and child will share the report buffer. Compare with `makeSilent`, in which the child has a fresh report buffer.

    If `tree` is an `Import`, that import will be avaiable at the head of `Context#imports`.

    Definition Classes
      Context

65. #### def makeConstructorContext: Analyzer.Context

    A context for typing constructor parameter ValDefs, super or self invocation arguments and default getters of constructors.

    A context for typing constructor parameter ValDefs, super or self invocation arguments and default getters of constructors. These expressions need to be type checked in a scope outside the class, cf. spec 5.3.1.

    This method is called by namer / typer where `this` is the context for the constructor DefDef. The owner of the resulting (new) context is the outer context for the Template, i.e. the context for the ClassDef. This means that class type parameters will be in scope. The value parameters of the current constructor are also entered into the new constructor scope. Members of the class however will not be accessible.

    Definition Classes
      Context

66. #### def makeImplicit(reportAmbiguousErrors: Boolean): Analyzer.Context

    Make a silent child context does not allow implicits.

    Make a silent child context does not allow implicits. Used to prevent chaining of implicit views.

    Definition Classes
      Context

67. #### def makeNewScope(tree: Global.Tree, owner: Global.Symbol, reporter: Analyzer.ContextReporter = this.reporter): Analyzer.Context

    Make a child context that represents a new nested scope

    Make a child context that represents a new nested scope

    Definition Classes
      Context

68. #### def makeNonSilent(newtree: Global.Tree): Analyzer.Context

    Definition Classes
      Context

69. #### def makeSilent(reportAmbiguousErrors: Boolean = ambiguousErrors, newtree: Global.Tree = tree): Analyzer.Context

    Make a child context that buffers errors and warnings into a fresh report buffer.

    Make a child context that buffers errors and warnings into a fresh report buffer.

    Definition Classes
      Context

70. #### var namedApplyBlockInfo: Option[(Global.Tree, Analyzer.NamedApplyInfo)]

    Definition Classes
      Context

71. #### final def ne(arg0: AnyRef): Boolean

    Equivalent to `!(this eq that)`.

    Equivalent to `!(this eq that)`.

    returns

      `true` if the argument is not a reference to the receiver object; `false` otherwise.

    Definition Classes
      AnyRef

72. #### def nextEnclosing(p: (Analyzer.Context) ⇒ Boolean): Analyzer.Context

    Definition Classes
      NoContext → Context

73. #### final def notify(): Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Definition Classes
      AnyRef
    Note

      not specified by SLS as a member of AnyRef

74. #### final def notifyAll(): Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    Definition Classes
      AnyRef
    Note

      not specified by SLS as a member of AnyRef

75. #### var openImplicits: List[Analyzer.OpenImplicit]

    Types for which implicit arguments are currently searched

    Types for which implicit arguments are currently searched

    Definition Classes
      Context

76. #### final def outer: Analyzer.Context

    Definition Classes
      Context

77. #### def outerDepth: Int

    Attributes
      protected
    Definition Classes
      Context

78. #### val owner: Global.Symbol

    The current owner

    The current owner

    Definition Classes
      Context

79. #### var prefix: Global.Type

    Definition Classes
      Context

80. #### def pushTypeBounds(sym: Global.Symbol): Unit

    Definition Classes
      Context

81. #### def reportErrors: Boolean

    Definition Classes
      Context

82. #### def reporter: Analyzer.ContextReporter

    Definition Classes
      Context

83. #### def resetCache(): Unit

    Definition Classes
      Context

84. #### def restoreTypeBounds(tp: Global.Type): Global.Type

    Definition Classes
      Context

85. #### def returnsSeen: Boolean

    Definition Classes
      Context

86. #### def returnsSeen_=(value: Boolean): Unit

    Definition Classes
      Context

87. #### def retyping: Boolean

    Definition Classes
      Context

88. #### def retyping_=(value: Boolean): Unit

    Definition Classes
      Context

89. #### var savedTypeBounds: List[(Global.Symbol, Global.Type)]

    Saved type bounds for type parameters which are narrowed in a GADT.

    Saved type bounds for type parameters which are narrowed in a GADT.

    Definition Classes
      Context

90. #### def savingUndeterminedTypeParams[A](reportAmbiguous: Boolean = ambiguousErrors)(body: ⇒ A): A

    Run `body` with this context with no undetermined type parameters, restore the original the original list afterwards.

    Run `body` with this context with no undetermined type parameters, restore the original the original list afterwards.

    reportAmbiguous

      Should ambiguous errors be reported during evaluation of `body`?

    Definition Classes
      Context

91. #### val scope: Global.Scope

    The current scope

    The current scope

    Definition Classes
      Context

92. #### def set(enable: ContextMode = NOmode, disable: ContextMode = NOmode): NoContext.this.type

    Set all modes in the mask `enable` to true, and all in `disable` to false.

    Set all modes in the mask `enable` to true, and all in `disable` to false.

    Definition Classes
      Context

93. #### def siteString: String

    Definition Classes
      Context

94. #### def starPatterns: Boolean

    Definition Classes
      Context

95. #### def starPatterns_=(value: Boolean): Unit

    Definition Classes
      Context

96. #### final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
      AnyRef

97. #### def toString(): String

    Creates a String representation of this object.

    Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.

    returns

      a String representation of the object.

    Definition Classes
      NoContext → Context → AnyRef → Any

98. #### val tree: Global.Tree

    Tree associated with this context

    Tree associated with this context

    Definition Classes
      Context

99. #### def undetparams: List[Global.Symbol]

    Undetermined type parameters.

    Undetermined type parameters. See `Infer#{inferExprInstance, adjustTypeArgs}`. Not inherited to child contexts

    Definition Classes
      Context

100. #### def undetparamsString: String

     Definition Classes
       Context

101. #### def undetparams_=(ps: List[Global.Symbol]): Unit

     Definition Classes
       Context

102. #### val unit: Global.CompilationUnit

     Definition Classes
       Context

103. #### def update(mask: ContextMode, value: Boolean): Unit

     Update all modes in `mask` to `value`

     Update all modes in `mask` to `value`

     Definition Classes
       Context

104. #### var variance: Variance

     Variance relative to enclosing class

     Variance relative to enclosing class

     Definition Classes
       Context

105. #### final def wait(): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws( ... )

106. #### final def wait(arg0: Long, arg1: Int): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws( ... )

107. #### final def wait(arg0: Long): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws( ... )

108. #### def warning(pos: Global.Position, msg: String): Unit

     Issue/throw the given error message according to the current mode for error reporting.

     Issue/throw the given error message according to the current mode for error reporting.

     Definition Classes
       Context

109. #### final def withImplicitsDisabled[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

110. #### final def withImplicitsDisabledAllowEnrichment[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

111. #### final def withImplicitsEnabled[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

112. #### final def withMacrosDisabled[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

113. #### final def withMacrosEnabled[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

114. #### final def withMode[T](enabled: ContextMode = NOmode, disabled: ContextMode = NOmode)(op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

115. #### final def withOnlyStickyModes[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

116. #### final def withinPatAlternative[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

117. #### final def withinReturnExpr[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

118. #### final def withinSecondTry[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

119. #### final def withinStarPatterns[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

120. #### final def withinSuperInit[T](op: ⇒ T): T

     Definition Classes
       Context
     Annotations
       @inline()

121. #### final def withinTypeConstructorAllowed[T](op: ⇒ T): T

     TypeConstructorAllowed is enabled when we are typing a higher-kinded type.

     TypeConstructorAllowed is enabled when we are typing a higher-kinded type. adapt should then check kind-arity based on the prototypical type's kind arity. Type arguments should not be inferred.

     Definition Classes
       Context
     Annotations
       @inline()

### Inherited from Analyzer.Context

### Inherited from AnyRef

### Inherited from Any

### Ungrouped