Packages

class Eraser extends Typer

The modifier typer which retypes with erased types.

Source
Erasure.scala
Linear Supertypes
Erasure.Typer, Erasure.TyperContextErrors, Erasure.PatternTyper, Erasure.Tag, Erasure.Adaptation, Erasure.TyperDiagnostics, AnyRef, Any
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Inherited
  1. Eraser
  2. Typer
  3. TyperContextErrors
  4. PatternTyper
  5. Tag
  6. Adaptation
  7. TyperDiagnostics
  8. AnyRef
  9. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new Eraser(_context: Erasure.Context)

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 Eraser to any2stringadd[Eraser] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (Eraser, B)
    Implicit
    This member is added by an implicit conversion from Eraser to ArrowAssoc[Eraser] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. def acceptsApplyDynamic(tp: Global.Type): Boolean
    Attributes
    protected
    Definition Classes
    Typer
  7. def adapt(tree: Global.Tree, mode: Mode, pt: Global.Type, original: Global.Tree = EmptyTree): Global.Tree

    A replacement for the standard typer's adapt method.

    A replacement for the standard typer's adapt method.

    Attributes
    protected
    Definition Classes
    Eraser → Typer
  8. def adaptAfterOverloadResolution(tree: Global.Tree, mode: Mode, pt: Global.Type = WildcardType, original: Global.Tree = EmptyTree): Global.Tree
    Definition Classes
    Typer
  9. def adaptCase(cdef: Global.CaseDef, mode: Mode, tpe: Global.Type): Global.CaseDef
    Definition Classes
    Typer
  10. def adaptToArguments(qual: Global.Tree, name: Global.Name, args: List[Global.Tree], pt: Global.Type, reportAmbiguous: Boolean = true, saveErrors: Boolean = true): Global.Tree

    Try to apply an implicit conversion to qual to that it contains a method name which can be applied to arguments args with expected type pt.

    Try to apply an implicit conversion to qual to that it contains a method name which can be applied to arguments args with expected type pt. If pt is defined, there is a fallback to try again with pt = ?. This helps avoiding propagating result information too far and solves #1756. If no conversion is found, return qual unchanged.

    Definition Classes
    Typer
  11. def adaptToMember(qual: Global.Tree, searchTemplate: Global.Type, reportAmbiguous: Boolean = true, saveErrors: Boolean = true): Global.Tree
    Definition Classes
    Typer
  12. def adaptToMemberWithArgs(tree: Global.Tree, qual: Global.Tree, name: Global.Name, mode: Mode, reportAmbiguous: Boolean = true, saveErrors: Boolean = true): Global.Tree

    Try to apply an implicit conversion to qual so that it contains a method name.

    Try to apply an implicit conversion to qual so that it contains a method name. If that's ambiguous try taking arguments into account using adaptToArguments.

    Definition Classes
    Typer
  13. def adaptToName(qual: Global.Tree, name: Global.Name): Global.Tree

    Try to apply an implicit conversion to qual to that it contains a member name of arbitrary type.

    Try to apply an implicit conversion to qual to that it contains a member name of arbitrary type. If no conversion is found, return qual unchanged.

    Definition Classes
    Typer
  14. def analyzeSuperConsructor(meth: Global.Symbol, vparamss: List[List[Global.ValDef]], rhs: Global.Tree): Unit

    Analyze the super constructor call to record information used later to compute parameter aliases

    Analyze the super constructor call to record information used later to compute parameter aliases

    Definition Classes
    Typer
  15. def applyImplicitArgs(fun: Global.Tree): Global.Tree

    Find implicit arguments and pass them to given tree.

    Find implicit arguments and pass them to given tree.

    Definition Classes
    Typer
  16. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  17. def atOwner(tree: Global.Tree, owner: Global.Symbol): Erasure.Typer
    Definition Classes
    Typer
  18. def atOwner(owner: Global.Symbol): Erasure.Typer
    Definition Classes
    Typer
  19. def callToCompanionConstr(context: Erasure.Context, calledFun: Global.Symbol): Boolean
    Definition Classes
    Typer
  20. def canAdaptConstantTypeToLiteral: Boolean

    Overridden to false in scaladoc and/or interactive.

    Overridden to false in scaladoc and/or interactive.

    Definition Classes
    Typer
  21. def canTranslateEmptyListToNil: Boolean
    Definition Classes
    Typer
  22. def checkClassType(tpt: Global.Tree): Boolean

    Check that tpt refers to a non-refinement class type

    Check that tpt refers to a non-refinement class type

    Definition Classes
    Typer
  23. def checkExistentialsFeature(pos: Global.Position, tpe: Global.Type, prefix: String): AnyVal
    Definition Classes
    Typer
  24. def checkFeature(pos: Global.Position, featureTrait: Global.Symbol, construct: ⇒ String = "", immediate: Boolean = false): Boolean

    Check whether feature given by featureTrait is enabled.

    Check whether feature given by featureTrait is enabled. If it is not, issue an error or a warning depending on whether the feature is required.

    construct

    A string expression that is substituted for "#" in the feature description string

    immediate

    When set, feature check is run immediately, otherwise it is run at the end of the typechecking run for the enclosing unit. This is done to avoid potential cyclic reference errors by implicits that are forced too early.

    returns

    if feature check is run immediately: true if feature is enabled, false otherwise if feature check is delayed or suppressed because we are past typer: true

    Definition Classes
    Typer
  25. def checkFinitary(classinfo: Global.ClassInfoType): Unit
    Definition Classes
    Typer
  26. def checkMethodStructuralCompatible(ddef: Global.DefDef): Unit

    Check if a structurally defined method violates implementation restrictions.

    Check if a structurally defined method violates implementation restrictions. A method cannot be called if it is a non-private member of a refinement type and if its parameter's types are any of:

    • the self-type of the refinement
    • a type member of the refinement
    • an abstract type declared outside of the refinement.
    • an instance of a value class Furthermore, the result type may not be a value class either
    Definition Classes
    Typer
  27. def checkNonCyclic(defn: Global.Tree, tpt: Global.Tree): Unit
    Definition Classes
    Typer
  28. def checkNonCyclic(sym: Global.Symbol): Unit
    Definition Classes
    Typer
  29. def checkNonCyclic(pos: Global.Position, tp: Global.Type, lockedSym: Global.Symbol): Boolean
    Definition Classes
    Typer
  30. def checkNonCyclic(pos: Global.Position, tp: Global.Type): Boolean

    Check that type tp is not a subtype of itself.

    Check that type tp is not a subtype of itself.

    Definition Classes
    Typer
  31. def checkParamsConvertible(tree: Global.Tree, tpe0: Global.Type): Unit
    Definition Classes
    Typer
  32. def checkStablePrefixClassType(tpt: Global.Tree): Boolean

    Check that tpt refers to a class type with a stable prefix.

    Check that tpt refers to a class type with a stable prefix.

    Definition Classes
    Typer
  33. def checkValidAdaptation(t: Global.Tree, args: List[Global.Tree]): Boolean
    Definition Classes
    Adaptation
  34. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  35. def computeMacroDefType(ddef: Global.DefDef, pt: Global.Type): Global.Type
    Definition Classes
    Typer
  36. def computeType(tree: Global.Tree, pt: Global.Type): Global.Type
    Definition Classes
    Typer
  37. final def constrTyperIf(inConstr: Boolean): Erasure.Typer

    The typer for an expression, depending on where we are.

    The typer for an expression, depending on where we are. If we are before a superclass call, this is a typer over a constructor context; otherwise it is the current typer.

    Definition Classes
    Typer
  38. var context: Erasure.Context
    Definition Classes
    Typer
  39. def context1: Erasure.Context
    Definition Classes
    Typer
  40. def cyclicReferenceMessage(sym: Global.Symbol, tree: Global.Tree): Option[String]

    Returns Some(msg) if the given tree is untyped apparently due to a cyclic reference, and None otherwise.

    Returns Some(msg) if the given tree is untyped apparently due to a cyclic reference, and None otherwise.

    Definition Classes
    TyperDiagnostics
  41. def doTypedApply(tree: Global.Tree, fun0: Global.Tree, args: List[Global.Tree], mode: Mode, pt: Global.Type): Global.Tree
    Definition Classes
    Typer
  42. def doTypedUnapply(tree: Global.Tree, funOrig: Global.Tree, funOverloadResolved: Global.Tree, args: List[Global.Tree], mode: Mode, pt: Global.Type): Global.Tree
    Definition Classes
    PatternTyper
  43. def dropExistential(tp: Global.Type): Global.Type
    Definition Classes
    Typer
  44. def ensuring(cond: (Eraser) ⇒ Boolean, msg: ⇒ Any): Eraser
    Implicit
    This member is added by an implicit conversion from Eraser to Ensuring[Eraser] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  45. def ensuring(cond: (Eraser) ⇒ Boolean): Eraser
    Implicit
    This member is added by an implicit conversion from Eraser to Ensuring[Eraser] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  46. def ensuring(cond: Boolean, msg: ⇒ Any): Eraser
    Implicit
    This member is added by an implicit conversion from Eraser to Ensuring[Eraser] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  47. def ensuring(cond: Boolean): Eraser
    Implicit
    This member is added by an implicit conversion from Eraser to Ensuring[Eraser] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  48. def enterSym(txt: Erasure.Context, tree: Global.Tree): Erasure.Context
    Attributes
    protected
    Definition Classes
    Typer
  49. def enterSyms(txt: Erasure.Context, trees: List[Global.Tree]): Unit
    Attributes
    protected
    Definition Classes
    Typer
  50. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  51. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  52. def extractorForUncheckedType(pos: Global.Position, pt: Global.Type): Global.Tree
    Definition Classes
    PatternTyper
  53. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  54. def finishMethodSynthesis(templ: Global.Template, clazz: Global.Symbol, context: Erasure.Context): Global.Template

    In order to override this in the TreeCheckers Typer so synthetics aren't re-added all the time, it is exposed here the module/class typing methods go through it.

    In order to override this in the TreeCheckers Typer so synthetics aren't re-added all the time, it is exposed here the module/class typing methods go through it. ...but it turns out it's also the ideal spot for namer/typer coordination for the tricky method synthesis scenarios, so we'll make it that.

    Attributes
    protected
    Definition Classes
    Typer
  55. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from Eraser to StringFormat[Eraser] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  56. implicit def fresh: FreshNameCreator
    Definition Classes
    Typer
  57. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  58. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  59. val infer: Erasure.Inferencer
    Definition Classes
    Typer
  60. def inferSamType(fun: Global.Tree, pt: Global.Type, mode: Mode): Boolean

    Synthesize and type check the implementation of a type with a Single Abstract Method.

    Synthesize and type check the implementation of a type with a Single Abstract Method.

    Based on a type checked Function node { (p1: T1, ..., pN: TN) => body } : S where S is the expected type that defines a single abstract method (call it apply for the example), that has signature (p1: T1', ..., pN: TN'): T', synthesize the instantiation of the following anonymous class

    new S { def apply$body(p1: T1, ..., pN: TN): T = body def apply(p1: T1', ..., pN: TN'): T' = apply$body(p1,..., pN) }

    The apply method is identified by the argument sam; S corresponds to the argument pt, If pt is not fully defined, we derive samClassTpFullyDefined by inferring any unknown type parameters.

    The types T1' ... TN' and T' are derived from the method signature of the sam method, as seen from the fully defined samClassTpFullyDefined.

    The function's body is put in a (static) method in the class definition to enforce scoping. S's members should not be in scope in body. (Putting it in the block outside the class runs into implementation problems described below)

    The restriction on implicit arguments (neither S's constructor, nor sam may take an implicit argument list), is to keep the implementation of type inference (the computation of samClassTpFullyDefined) simple.

    Impl notes:

    • fun has a FunctionType, but the expected type pt is some SAM type -- let's remedy that
    • fun is fully attributed, so we'll have to wrangle some symbols into shape (owner change, vparam syms)
    • after experimentation, it works best to type check function literals fully first and then adapt to a sam type, as opposed to a sam-specific code paths earlier on in type checking (in typedFunction). For one, we want to emit the same bytecode regardless of whether the expected function type is a built-in FunctionN or some SAM type
    Definition Classes
    Typer
  61. def inferView(tree: Global.Tree, from: Global.Type, to: Global.Type, reportAmbiguous: Boolean = true, saveErrors: Boolean = true): Global.Tree

    Infer an implicit conversion (view) between two types.

    Infer an implicit conversion (view) between two types.

    tree

    The tree which needs to be converted.

    from

    The source type of the conversion

    to

    The target type of the conversion

    reportAmbiguous

    Should ambiguous implicit errors be reported? False iff we search for a view to find out whether one type is coercible to another.

    saveErrors

    Should ambiguous and divergent implicit errors that were buffered during the inference of a view be put into the original buffer. False iff we don't care about them.

    Definition Classes
    Typer
  62. def instantiate(tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree
    Definition Classes
    Typer
  63. def instantiateExpectingUnit(tree: Global.Tree, mode: Mode): Global.Tree

    If the expected type is Unit: try instantiating type arguments with expected type Unit, but if that fails, try again with pt = WildcardType and discard the expression.

    If the expected type is Unit: try instantiating type arguments with expected type Unit, but if that fails, try again with pt = WildcardType and discard the expression.

    Definition Classes
    Typer
  64. def instantiatePossiblyExpectingUnit(tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree
    Definition Classes
    Typer
  65. def isCapturedExistential(sym: Global.Symbol): Boolean
    Definition Classes
    Typer
  66. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  67. def isReferencedFrom(ctx: Erasure.Context, sym: Global.Symbol): Boolean
    Definition Classes
    Typer
  68. def isStale(sym: Global.Symbol): Boolean

    A symbol is stale if it is toplevel, to be loaded from a classfile, and the classfile is produced from a sourcefile which is compiled in the current run.

    A symbol is stale if it is toplevel, to be loaded from a classfile, and the classfile is produced from a sourcefile which is compiled in the current run.

    Definition Classes
    Typer
  69. def labelTyper(ldef: Global.LabelDef): Erasure.Typer

    The typer for a label definition.

    The typer for a label definition. If this is part of a template we first have to enter the label definition.

    Definition Classes
    Typer
  70. final def lookupTransformed(tree: Global.Tree): Option[Global.Tree]
    Definition Classes
    Typer
  71. def macroImplementationNotFoundMessage(name: Global.Name): String

    This file will be the death of me.

    This file will be the death of me.

    Attributes
    protected
    Definition Classes
    TyperContextErrors
  72. def member(qual: Global.Type, name: Global.Name): Global.Symbol

    The member with given name of given qualifier type

    The member with given name of given qualifier type

    Definition Classes
    Typer
  73. def missingSelectErrorTree(tree: Global.Tree, qual: Global.Tree, name: Global.Name): Global.Tree
    Definition Classes
    Typer
  74. def mkInvoke(context: Erasure.Context, tree: Global.Tree, qual: Global.Tree, name: Global.Name): Option[Global.Tree]

    Translate selection that does not typecheck according to the normal rules into a selectDynamic/applyDynamic.

    Translate selection that does not typecheck according to the normal rules into a selectDynamic/applyDynamic.

    foo.method("blah") ~~> foo.applyDynamic("method")("blah") foo.method(x = "blah") ~~> foo.applyDynamicNamed("method")(("x", "blah")) foo.varia = 10 ~~> foo.updateDynamic("varia")(10) foo.field ~~> foo.selectDynamic("field") foo.arr(10) = 13 ~~> foo.selectDynamic("arr").update(10, 13)

    what if we want foo.field == foo.selectDynamic("field") == 1, but foo.field = 10 == foo.selectDynamic("field").update(10) == () what would the signature for selectDynamic be? (hint: it needs to depend on whether an update call is coming or not)

    need to distinguish selectDynamic and applyDynamic somehow: the former must return the selected value, the latter must accept an apply or an update

    • could have only selectDynamic and pass it a boolean whether more is to come, so that it can either return the bare value or something that can handle the apply/update HOWEVER that makes it hard to return unrelated values for the two cases --> selectDynamic's return type is now dependent on the boolean flag whether more is to come
    • simplest solution: have two method calls
    Attributes
    protected
    Definition Classes
    Typer
  75. def namer: Erasure.Namer
    Definition Classes
    Typer
  76. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  77. def needsInstantiation(tparams: List[Global.Symbol], formals: List[Global.Type], args: List[Global.Tree]): Boolean

    Does function need to be instantiated, because a missing parameter in an argument closure overlaps with an uninstantiated formal?

    Does function need to be instantiated, because a missing parameter in an argument closure overlaps with an uninstantiated formal?

    Definition Classes
    Typer
  78. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  79. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  80. def packCaptured(tpe: Global.Type): Global.Type
    Definition Classes
    Typer
  81. def packSymbols(hidden: List[Global.Symbol], tp: Global.Type): Global.Type

    Compute an existential type from raw hidden symbols syms and type tp

    Compute an existential type from raw hidden symbols syms and type tp

    Definition Classes
    Typer
  82. def packedType(tree: Global.Tree, owner: Global.Symbol): Global.Type

    convert local symbols and skolems to existentials

    convert local symbols and skolems to existentials

    Definition Classes
    Typer
  83. def packedTypes(trees: List[Global.Tree]): List[Global.Type]
    Definition Classes
    Typer
  84. def permanentlyHiddenWarning(pos: Global.Position, hidden: Global.Name, defn: Global.Symbol): Unit
    Definition Classes
    TyperDiagnostics
  85. def phasedAppliedType(sym: Global.Symbol, args: List[Global.Type]): Global.Type
    Definition Classes
    Typer
  86. def qualifyingClass(tree: Global.Tree, qual: Global.Name, packageOK: Boolean): Global.Symbol

    The qualifying class of a this or super with prefix qual.

    The qualifying class of a this or super with prefix qual. packageOk is equal false when qualifying class symbol

    Definition Classes
    Typer
  87. def reallyExists(sym: Global.Symbol): Boolean

    Is symbol defined and not stale?

    Is symbol defined and not stale?

    Definition Classes
    Typer
  88. def reenterTypeParams(tparams: List[Global.TypeDef]): List[Global.Symbol]
    Definition Classes
    Typer
  89. def reenterValueParams(vparamss: List[List[Global.ValDef]]): Unit
    Definition Classes
    Typer
  90. def reportTypeError(context0: Erasure.Context, pos: Global.Position, ex: Global.TypeError): Unit

    Report a type error.

    Report a type error.

    pos

    The position where to report the error

    ex

    The exception that caused the error

    Definition Classes
    TyperDiagnostics
  91. def resolveClassTag(pos: Global.Position, tp: Global.Type, allowMaterialization: Boolean = true): Global.Tree

    Finds in scope or materializes a ClassTag.

    Finds in scope or materializes a ClassTag. Should be used instead of ClassManifest every time compiler needs to persist an erasure.

    Once upon a time, we had an ErasureTag which was to ClassTag the same that WeakTypeTag is for TypeTag. However we found out that we don't really need this concept, so it got removed.

    pos

    Position for error reporting. Please, provide meaningful value.

    tp

    Type we're looking a ClassTag for, e.g. resolveClassTag(pos, IntTpe) will look for ClassTag[Int].

    allowMaterialization

    If true (default) then the resolver is allowed to launch materialization macros when there's no class tag in scope. If false then materialization macros are prohibited from running.

    returns

    Tree that represents an scala.reflect.ClassTag for tp if everything is okay. EmptyTree if the result contains unresolved (i.e. not spliced) type parameters and abstract type members. EmptyTree if allowMaterialization is false, and there is no class tag in scope.

    Definition Classes
    Tag
  92. def resolveTypeTag(pos: Global.Position, pre: Global.Type, tp: Global.Type, concrete: Boolean, allowMaterialization: Boolean = true): Global.Tree

    Finds in scope or materializes an WeakTypeTag (if concrete is false) or a TypeTag (if concrete is true).

    Finds in scope or materializes an WeakTypeTag (if concrete is false) or a TypeTag (if concrete is true).

    pos

    Position for error reporting. Please, provide meaningful value.

    pre

    Prefix that represents a universe this type tag will be bound to. If pre is set to NoType, then any type tag in scope will do, regardless of its affiliation. If pre is set to NoType, and tag resolution involves materialization, then mkRuntimeUniverseRef will be used.

    tp

    Type we're looking a TypeTag for, e.g. resolveTypeTag(pos, mkRuntimeUniverseRef, IntTpe, false) will look for scala.reflect.runtime.universe.TypeTag[Int].

    concrete

    If true then the result must not contain unresolved (i.e. not spliced) type parameters and abstract type members. If false then the function will always succeed (abstract types will be reified as free types).

    allowMaterialization

    If true (default) then the resolver is allowed to launch materialization macros when there's no type tag in scope. If false then materialization macros are prohibited from running.

    returns

    Tree that represents a scala.reflect.TypeTag for tp if everything is okay. EmptyTree if concrete is true and the result contains unresolved (i.e. not spliced) type parameters and abstract type members. EmptyTree if allowMaterialization is false, and there is no array tag in scope.

    Definition Classes
    Tag
  93. def rewrappingWrapperTrees(f: (Global.Tree) ⇒ List[Global.Tree]): (Global.Tree) ⇒ List[Global.Tree]

    For flatMapping a list of trees when you want the DocDefs and Annotated to be transparent.

    For flatMapping a list of trees when you want the DocDefs and Annotated to be transparent.

    Definition Classes
    Typer
  94. def samToFunctionType(tp: Global.Type, sam: Global.Symbol = NoSymbol): Global.Type

    Convert a SAM type to the corresponding FunctionType, extrapolating BoundedWildcardTypes in the process (no type precision is lost by the extrapolation, but this facilitates dealing with the types arising from Java's use-site variance).

    Convert a SAM type to the corresponding FunctionType, extrapolating BoundedWildcardTypes in the process (no type precision is lost by the extrapolation, but this facilitates dealing with the types arising from Java's use-site variance).

    Definition Classes
    Typer
  95. def silent[T](op: (Erasure.Typer) ⇒ T, reportAmbiguousErrors: Boolean = context.ambiguousErrors, newtree: Global.Tree = context.tree): Erasure.SilentResult[T]
    Definition Classes
    Typer
  96. def stabilize(tree: Global.Tree, pre: Global.Type, mode: Mode, pt: Global.Type): Global.Tree

    Post-process an identifier or selection node, performing the following:

    Post-process an identifier or selection node, performing the following:

    1. Check that non-function pattern expressions are stable (ignoring volatility concerns -- scala/bug#6815) (and narrow the type of modules: a module reference in a pattern has type Foo.type, not "object Foo") 2. Check that packages and static modules are not used as values 3. Turn tree type into stable type if possible and required by context. 4. Give getClass calls a more precise type based on the type of the target of the call.
    Attributes
    protected
    Definition Classes
    Eraser → Typer
  97. def stabilizeFun(tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree
    Definition Classes
    Typer
  98. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  99. def synthesizePartialFunction(paramName: Global.TermName, paramPos: Global.Position, paramSynthetic: Boolean, tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree

    synthesize and type check a PartialFunction implementation based on the match in tree

    synthesize and type check a PartialFunction implementation based on the match in tree

    param => sel match { cases } becomes:

    new AbstractPartialFunction[$argTp, $matchResTp] { def applyOrElse[A1 <: $argTp, B1 >: $matchResTp]($param: A1, default: A1 => B1): B1 = $selector match { $cases } def isDefinedAt(x: $argTp): Boolean = $selector match { $casesTrue } }

    TODO: it would be nicer to generate the tree specified above at once and type it as a whole, there are two gotchas:

    • matchResTp may not be known until we've typed the match (can only use resTp when it's fully defined),
      • if we typed the match in isolation first, you'd know its result type, but would have to re-jig the owner structure
      • could we use a type variable for matchResTp and backpatch it?
    • occurrences of this in cases or sel must resolve to the this of the class originally enclosing the match, not of the anonymous partial function subclass

    an alternative TODO: add partial function AST node or equivalent and get rid of this synthesis --> do everything in uncurry (or later) however, note that pattern matching codegen is designed to run *before* uncurry

    Definition Classes
    Typer
  100. def toString(): String
    Definition Classes
    AnyRef → Any
  101. final def transformedOr(tree: Global.Tree, op: ⇒ Global.Tree): Global.Tree
    Definition Classes
    Typer
    Annotations
    @inline()
  102. final def transformedOrTyped(tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree
    Definition Classes
    Typer
    Annotations
    @inline()
  103. val typeAdapter: Erasure.TypeAdapter
  104. final def typed(tree: Global.Tree, mode: Mode): Global.Tree
    Definition Classes
    Typer
    Annotations
    @inline()
  105. final def typed(tree: Global.Tree, pt: Global.Type): Global.Tree

    Types expression tree with given prototype pt.

    Types expression tree with given prototype pt.

    Definition Classes
    Typer
    Annotations
    @inline()
  106. final def typed(tree: Global.Tree): Global.Tree

    Types expression or definition tree.

    Types expression or definition tree.

    Definition Classes
    Typer
    Annotations
    @inline()
  107. def typed(tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree
    Definition Classes
    Typer
  108. def typed1(tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree

    A replacement for the standard typer's typed1 method.

    A replacement for the standard typer's typed1 method.

    Definition Classes
    Eraser → Typer
  109. def typedAnnotation(ann: Global.Tree, mode: Mode = EXPRmode): Global.AnnotationInfo

    Convert an annotation constructor call into an AnnotationInfo.

    Convert an annotation constructor call into an AnnotationInfo.

    Definition Classes
    Typer
  110. def typedArg(arg: Global.Tree, mode: Mode, newmode: Mode, pt: Global.Type): Global.Tree
    Definition Classes
    Typer
  111. def typedArgs(args: List[Global.Tree], mode: Mode): collection.immutable.List[Global.Tree]
    Definition Classes
    Typer
  112. def typedArgsForFormals(args: List[Global.Tree], formals: List[Global.Type], mode: Mode): List[Global.Tree]
    Definition Classes
    PatternTyper
  113. def typedBlock(block0: Global.Block, mode: Mode, pt: Global.Type): Global.Block
    Definition Classes
    Typer
  114. final def typedByValueExpr(tree: Global.Tree, pt: Global.Type = WildcardType): Global.Tree
    Definition Classes
    Typer
    Annotations
    @inline()
  115. def typedCase(cdef: Global.CaseDef, pattpe: Global.Type, pt: Global.Type): Global.CaseDef
    Definition Classes
    Typer
  116. def typedCases(cases: List[Global.CaseDef], pattp: Global.Type, pt: Global.Type): List[Global.CaseDef]
    Definition Classes
    Typer
  117. def typedClassDef(cdef: Global.ClassDef): Global.Tree
    Definition Classes
    Typer
  118. def typedClassOf(tree: Global.Tree, tpt: Global.Tree, noGen: Boolean = false): Global.Tree
    Definition Classes
    Typer
  119. def typedConstructorPattern(fun0: Global.Tree, pt: Global.Type): Global.Tree
    Definition Classes
    PatternTyper
  120. def typedDefDef(ddef: Global.DefDef): Global.DefDef
    Definition Classes
    Typer
  121. def typedDocDef(docDef: Global.DocDef, mode: Mode, pt: Global.Type): Global.Tree
    Definition Classes
    Typer
  122. def typedExistentialTypeTree(tree: Global.ExistentialTypeTree, mode: Mode): Global.Tree
    Attributes
    protected
    Definition Classes
    Typer
  123. def typedHigherKindedType(tree: Global.Tree, mode: Mode): Global.Tree
    Definition Classes
    Typer
  124. def typedHigherKindedType(tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree

    Types a higher-kinded type tree -- pt denotes the expected kind and must be one of Kind.WildCard and Kind.FromParams

    Types a higher-kinded type tree -- pt denotes the expected kind and must be one of Kind.WildCard and Kind.FromParams

    Definition Classes
    Typer
  125. def typedImport(imp: Global.Import): Global.Import
    Definition Classes
    Typer
  126. def typedInPattern(tree: Global.Typed, mode: Mode, pt: Global.Type): Global.Tree
    Attributes
    protected
    Definition Classes
    PatternTyper
  127. def typedLabelDef(ldef: Global.LabelDef): Global.LabelDef
    Definition Classes
    Typer
  128. def typedMatch(selector: Global.Tree, cases: List[Global.CaseDef], mode: Mode, pt: Global.Type, tree: Global.Tree = EmptyTree): Global.Match
    Definition Classes
    Typer
  129. def typedModifiers(mods: Global.Modifiers): Global.Modifiers

    Remove definition annotations from modifiers (they have been saved into the symbol's annotations in the type completer / namer)

    Remove definition annotations from modifiers (they have been saved into the symbol's annotations in the type completer / namer)

    However reification does need annotation definitions to proceed. Unfortunately, AnnotationInfo doesn't provide enough info to reify it in general case. The biggest problem is with the "atp: Type" field, which cannot be reified in some situations that involve locally defined annotations. See more about that in Reifiers.scala.

    That's why the original tree gets saved into original field of AnnotationInfo (happens elsewhere). The field doesn't get pickled/unpickled and exists only during a single compilation run. This simultaneously allows us to reify annotations and to preserve backward compatibility.

    Definition Classes
    Typer
  130. def typedModuleDef(mdef: Global.ModuleDef): Global.Tree
    Definition Classes
    Typer
  131. final def typedOperator(tree: Global.Tree): Global.Tree

    Types function part of an application

    Types function part of an application

    Definition Classes
    Typer
    Annotations
    @inline()
  132. def typedParentTypes(templ: Global.Template): List[Global.Tree]
    Definition Classes
    Typer
  133. def typedPattern(tree: Global.Tree, pt: Global.Type): Global.Tree

    Types a pattern with prototype pt

    Types a pattern with prototype pt

    Definition Classes
    Typer
  134. def typedPos(pos: Global.Position)(tree: Global.Tree): Global.Tree
    Definition Classes
    Typer
  135. def typedPos(pos: Global.Position, mode: Mode, pt: Global.Type)(tree: Global.Tree): Global.Tree
    Definition Classes
    Typer
  136. final def typedQualifier(tree: Global.Tree): Global.Tree
    Definition Classes
    Typer
    Annotations
    @inline()
  137. final def typedQualifier(tree: Global.Tree, mode: Mode): Global.Tree

    Types qualifier tree of a select node.

    Types qualifier tree of a select node. E.g. is tree occurs in a context like tree.m.

    Definition Classes
    Typer
    Annotations
    @inline()
  138. final def typedQualifier(tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree

    Types qualifier tree of a select node.

    Types qualifier tree of a select node. E.g. is tree occurs in a context like tree.m.

    Definition Classes
    Typer
    Annotations
    @inline()
  139. def typedRefinement(templ: Global.Template): Unit
    Definition Classes
    Typer
  140. def typedStarInPattern(tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree
    Attributes
    protected
    Definition Classes
    PatternTyper
  141. def typedStats(stats: List[Global.Tree], exprOwner: Global.Symbol): List[Global.Tree]
    Definition Classes
    Typer
  142. def typedTemplate(templ0: Global.Template, parents1: List[Global.Tree]): Global.Template

    Check that inner classes do not inherit from Annotation

    Check that inner classes do not inherit from Annotation

    Definition Classes
    Typer
  143. def typedType(tree: Global.Tree): Global.Tree

    Types a (fully parameterized) type tree

    Types a (fully parameterized) type tree

    Definition Classes
    Typer
  144. def typedType(tree: Global.Tree, mode: Mode): Global.Tree

    Types a (fully parameterized) type tree

    Types a (fully parameterized) type tree

    Definition Classes
    Typer
  145. def typedTypeApply(tree: Global.Tree, mode: Mode, fun: Global.Tree, args: List[Global.Tree]): Global.Tree
    Attributes
    protected
    Definition Classes
    Typer
  146. def typedTypeConstructor(tree: Global.Tree): Global.Tree
    Definition Classes
    Typer
  147. def typedTypeConstructor(tree: Global.Tree, mode: Mode): Global.Tree

    Types a type constructor tree used in a new or supertype

    Types a type constructor tree used in a new or supertype

    Definition Classes
    Typer
  148. def typedTypeDef(tdef: Global.TypeDef): Global.TypeDef
    Definition Classes
    Typer
  149. def typedValDef(vdef: Global.ValDef): Global.ValDef
    Definition Classes
    Typer
  150. final def typerWithCondLocalContext[T](c: ⇒ Erasure.Context)(cond: Boolean)(f: (Erasure.Typer) ⇒ T): T
    Definition Classes
    Typer
    Annotations
    @inline()
  151. final def typerWithLocalContext[T](c: Erasure.Context)(f: (Erasure.Typer) ⇒ T): T
    Definition Classes
    Typer
    Annotations
    @inline()
  152. def validateParentClasses(parents: List[Global.Tree], selfType: Global.Type): Unit

    Check that

    Check that

    • all parents are class types,
    • first parent class is not a mixin; following classes are mixins,
    • final classes are not inherited,

    - sealed classes are only inherited by classes which are nested within definition of base class, or that occur within same statement sequence,

    • self-type of current class is a subtype of self-type of each parent class.
    • no two parents define same symbol.
    Definition Classes
    Typer
  153. def viewExists(from: Global.Type, to: Global.Type): Boolean
    Definition Classes
    Typer
  154. def virtualizedMatch(match_: Global.Match, mode: Mode, pt: Global.Type): Global.Tree
    Definition Classes
    Typer
  155. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  156. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  157. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  158. def warnTypeParameterShadow(tparams: List[Global.TypeDef], sym: Global.Symbol): Unit
    Definition Classes
    TyperDiagnostics
  159. final def withCondConstrTyper[T](inConstr: Boolean)(f: (Erasure.Typer) ⇒ T): T
    Definition Classes
    Typer
    Annotations
    @inline()
  160. def wrapClassTagUnapply(uncheckedPattern: Global.Tree, classTagExtractor: Global.Tree, pt: Global.Type): Global.Tree
    Definition Classes
    PatternTyper
  161. def wrapErrors(tree: Global.Tree, typeTree: (Erasure.Typer) ⇒ Global.Tree): Global.Tree
    Attributes
    protected
    Definition Classes
    Typer
  162. def →[B](y: B): (Eraser, B)
    Implicit
    This member is added by an implicit conversion from Eraser to ArrowAssoc[Eraser] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
  163. object TyperErrorGen
    Definition Classes
    TyperContextErrors

Deprecated Value Members

  1. def member(qual: Global.Tree, name: Global.Name): Global.Symbol
    Definition Classes
    Typer
    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.9) Use the overload accepting a Type.

Inherited from Erasure.Typer

Inherited from Erasure.TyperContextErrors

Inherited from Erasure.PatternTyper

Inherited from Erasure.Tag

Inherited from Erasure.Adaptation

Inherited from Erasure.TyperDiagnostics

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from Eraser to any2stringadd[Eraser]

Inherited by implicit conversion StringFormat from Eraser to StringFormat[Eraser]

Inherited by implicit conversion Ensuring from Eraser to Ensuring[Eraser]

Inherited by implicit conversion ArrowAssoc from Eraser to ArrowAssoc[Eraser]

Ungrouped