Scala Compiler2.12.3-1 < 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 transform
  Definition Classes
    nsc
-  abstract class SpecializeTypes extends SubComponent with InfoTransform with TypingTransformers

  Specialize code on types.

  Specialize code on types.

  Make sure you've read the thesis:

  Iulian Dragos: Compiling Scala for Performance (chapter 4)

  There are some things worth noting, (possibly) not mentioned there: 0) Make sure you understand the meaning of various `SpecializedInfo` descriptors defined below.

  1) Specializing traits by introducing bridges in specialized methods of the specialized trait may introduce problems during mixin composition. Concretely, it may cause cyclic calls and result in a stack overflow. See ticket #4351. This was solved by introducing an `Abstract` specialized info descriptor. Instead of generating a bridge in the trait, an abstract method is generated.

  2) Specialized private members sometimes have to be switched to protected. In some cases, even this is not enough. Example:

      class A[@specialized T](protected val d: T) {
        def foo(that: A[T]) = that.d
      }

  Specialization will generate a specialized class and a specialized method:

      class A$mcI$sp(protected val d: Int) extends A[Int] {
        def foo(that: A[Int]) = foo$mcI$sp(that)
        def foo(that: A[Int]) = that.d
      }

  Above, `A$mcI$sp` cannot access `d`, so the method cannot be typechecked.

  Definition Classes
    transform
- Abstract
- Duplicator
- Forward
- Implementation
- ImplementationAdapter
- NormalizedMember
- Overload
- Phase
- SpecialOverload
- SpecialOverride
- SpecialSuperAccessor
- SpecializationDuplicator
- SpecializationPhase
- SpecializationTransformer
- SpecializedAccessor
- SpecializedInfo
- SpecializedInnerClass
- SpecializedSuperConstructorCallArgument
- StdPhase
- TypeEnv
- TypingTransformer
- UnifyError

c

scala.tools.nsc.transform.SpecializeTypes

# SpecializationDuplicator 

###

#### class SpecializationDuplicator extends Duplicator

Introduced to fix scala/bug#7343: Phase ordering problem between Duplicators and Specialization. brief explanation: specialization rewires class parents during info transformation, and the new info then guides the tree changes. But if a symbol is created during duplication, which runs after specialization, its info is not visited and thus the corresponding tree is not specialized. One manifestation is the following: ```object Test { class Parent[@specialized(Int) T]```

def spec_method[@specialized(Int) T](t: T, expectedXSuper: String) = { class X extends Parent[T]() // even in the specialized variant, the local X class // doesn't extend Parent$mcI$sp, since its symbol has // been created after specialization and was not seen // by specialization's info transformer. ... } } ```We fix this by forcing duplication to take place before specialization.```

Note: The constructors phase (which also uses duplication) comes after erasure and uses the post-erasure typer => we must protect it from the beforeSpecialization phase shifting.

Source
  SpecializeTypes.scala

Linear Supertypes
Duplicator, Duplicators, Analyzer, AnalyzerPlugins, StdAttachments, ContextErrors, TypeDiagnostics, NamesDefaults, Macros, Helpers, Traces, MacroRuntimes, JavaReflectionRuntimes, Unapplies, SyntheticMethods, TreeDSL, EtaExpansion, Implicits, Infer, Checkable, Typers, PatternTypers, TypersTracking, Tags, Adaptations, Namers, MethodSynthesis, Contexts, AnyRef, Any
Type Hierarchy
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Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. SpecializationDuplicator
2. Duplicator
3. Duplicators
4. Analyzer
5. AnalyzerPlugins
6. StdAttachments
7. ContextErrors
8. TypeDiagnostics
9. NamesDefaults
10. Macros
11. Helpers
12. Traces
13. MacroRuntimes
14. JavaReflectionRuntimes
15. Unapplies
16. SyntheticMethods
17. TreeDSL
18. EtaExpansion
19. Implicits
20. Infer
21. Checkable
22. Typers
23. PatternTypers
24. TypersTracking
25. Tags
26. Adaptations
27. Namers
28. MethodSynthesis
29. Contexts
30. AnyRef
31. 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 SpecializationDuplicator(casts: Map[Global.Symbol, Global.Type])

### Type Members

1.  trait JavaReflectionResolvers extends AnyRef
   Definition Classes
     JavaReflectionRuntimes
2.  class MacroRuntimeResolver extends tools.nsc.typechecker.Analyzer.JavaReflectionResolvers
   Definition Classes
     MacroRuntimes
3.  class BodyDuplicator extends Duplicator.BodyDuplicator
   Definition Classes
     Duplicator
4.  type ImportType = Global.ImportType
   Definition Classes
     Contexts
5.  type MacroContext = UnaffiliatedMacroContext { val universe: SpecializationDuplicator.this.global.type }
   Definition Classes
     StdAttachments
6.  type MacroRuntime = (MacroArgs) ⇒ Any

   Abstracts away resolution of macro runtimes.

   Abstracts away resolution of macro runtimes.

   Definition Classes
     MacroRuntimes
7.  type UnaffiliatedMacroContext = reflect.macros.contexts.Context

   Carries information necessary to expand the host tree.

   Carries information necessary to expand the host tree. At times we need to store this info, because macro expansion can be delayed until its targs are inferred. After a macro application has been successfully expanded, this attachment is destroyed.

   Definition Classes
     StdAttachments
8.  trait Adaptation extends AnyRef
   Definition Classes
     Adaptations
9.  trait AnalyzerPlugin extends AnyRef
   Definition Classes
     AnalyzerPlugins
10.  trait MacroPlugin extends AnyRef

    Definition Classes
      AnalyzerPlugins
11.  trait InferCheckable extends AnyRef
    Definition Classes
      Checkable
12.  abstract class AbsAmbiguousTypeError extends Analyzer.AbsTypeError
    Definition Classes
      ContextErrors
13.  sealed abstract class AbsTypeError extends Throwable
    Definition Classes
      ContextErrors
14.  case class AccessTypeError (underlyingTree: Global.Tree, errMsg: String) extends Analyzer.TreeTypeError with Product with Serializable
    Definition Classes
      ContextErrors
15.  case class AmbiguousImplicitTypeError (underlyingTree: Global.Tree, errMsg: String) extends Analyzer.AbsAmbiguousTypeError with Product with Serializable
    Definition Classes
      ContextErrors
16.  case class AmbiguousTypeError (errPos: Global.Position, errMsg: String) extends Analyzer.AbsAmbiguousTypeError with Product with Serializable
    Definition Classes
      ContextErrors
17.  case class DivergentImplicitTypeError (underlyingTree: Global.Tree, pt0: Global.Type, sym: Global.Symbol) extends Analyzer.TreeTypeError with Product with Serializable
    Definition Classes
      ContextErrors
18.  trait ImplicitsContextErrors extends AnyRef
    Definition Classes
      ContextErrors
19.  trait InferencerContextErrors extends AnyRef
    Definition Classes
      ContextErrors
20.  trait NamerContextErrors extends AnyRef
    Definition Classes
      ContextErrors
21.  case class NormalTypeError (underlyingTree: Global.Tree, errMsg: String) extends Analyzer.TreeTypeError with Product with Serializable
    Definition Classes
      ContextErrors
22.  class NormalTypeErrorFromCyclicReference extends Analyzer.NormalTypeError

    Marks a TypeError that was constructed from a CyclicReference (under silent).

    Marks a TypeError that was constructed from a CyclicReference (under silent). This is used for named arguments, where we need to know if an assignment expression failed with a cyclic reference or some other type error.

    Definition Classes
      ContextErrors
23.  case class PosAndMsgTypeError (errPos: Global.Position, errMsg: String) extends Analyzer.AbsTypeError with Product with Serializable
    Definition Classes
      ContextErrors
24.  case class SymbolTypeError (underlyingSym: Global.Symbol, errMsg: String) extends Analyzer.AbsTypeError with Product with Serializable
    Definition Classes
      ContextErrors
25.  sealed abstract class TreeTypeError extends Analyzer.AbsTypeError
    Definition Classes
      ContextErrors
26.  case class TypeErrorWithUnderlyingTree (tree: Global.Tree, ex: Global.TypeError) extends Analyzer.AbsTypeError with Product with Serializable
    Definition Classes
      ContextErrors
27.  case class TypeErrorWrapper (ex: Global.TypeError) extends Analyzer.AbsTypeError with Product with Serializable
    Definition Classes
      ContextErrors
28.  trait TyperContextErrors extends AnyRef
    Definition Classes
      ContextErrors
29.  class Context extends AnyRef

    A motley collection of the state and loosely associated behaviour of the type checker.

    A motley collection of the state and loosely associated behaviour of the type checker. Each `Typer` has an associated context, and as it descends into the tree new `(Typer, Context)` pairs are spawned.

    Meet the crew; first the state:

    - A tree, symbol, and scope representing the focus of the typechecker
    - An enclosing context, `outer`.
    - The current compilation unit.
    - A variety of bits that track the current error reporting policy (more on this later); whether or not implicits/macros are enabled, whether we are in a self or super call or in a constructor suffix. These are represented as bits in the mask `contextMode`.
    - Some odds and ends: undetermined type parameters of the current line of type inference; contextual augmentation for error messages, tracking of the nesting depth.

    And behaviour:

    - The central point for issuing errors and warnings from the typechecker, with a means to buffer these for use in 'silent' type checking, when some recovery might be possible.
    - `Context` is something of a Zipper for the tree were are typechecking: it `enclosingContextChain` is the path back to the root. This is exactly what we need to resolve names (`lookupSymbol`) and to collect in-scope implicit definitions (`implicitss`) Supporting these are `imports`, which represents all `Import` trees in in the enclosing context chain.
    - In a similar vein, we can assess accessibility (`isAccessible`.)

    More on error buffering: When are type errors recoverable? In quite a few places, it turns out. Some examples: trying to type an application with/without the expected type, or with/without implicit views enabled. This is usually mediated by `Typer.silent`, `Inferencer#tryTwice`.

    Initially, starting from the `typer` phase, the contexts either buffer or report errors; afterwards errors are thrown. This is configured in `rootContext`. Additionally, more fine grained control is needed based on the kind of error; ambiguity errors are often suppressed during exploratory typing, such as determining whether `a == b` in an argument position is an assignment or a named argument, when `Inferencer#isApplicableSafe` type checks applications with and without an expected type, or when `Typer#tryTypedApply` tries to fit arguments to a function type with/without implicit views.

    When the error policies entail error/warning buffering, the mutable ReportBuffer records everything that is issued. It is important to note, that child Contexts created with `make` "inherit" the very same `ReportBuffer` instance, whereas children spawned through `makeSilent` receive a separate, fresh buffer.

    Definition Classes
      Contexts
30.  abstract class ContextReporter extends Reporter

    A reporter for use during type checking.

    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

    Definition Classes
      Contexts
31.  trait ImportContext extends Analyzer.Context

    A `Context` focussed on an `Import` tree

    A `Context` focussed on an `Import` tree

    Definition Classes
      Contexts
32.  class ImportInfo extends AnyRef
    Definition Classes
      Contexts
33.  class ImplicitAnnotationMsg extends AnyRef
    Definition Classes
      Implicits
34.  class ImplicitInfo extends AnyRef

    A class that records an available implicit

    A class that records an available implicit

    Definition Classes
      Implicits
35.  class ImplicitSearch extends Analyzer.Typer with Analyzer.ImplicitsContextErrors

    A class that sets up an implicit search.

    A class that sets up an implicit search. For more info, see comments for `inferImplicit`.

    Definition Classes
      Implicits
36.  class Message extends AnyRef
    Definition Classes
      Implicits
37.  case class OpenImplicit (info: Analyzer.ImplicitInfo, pt: Global.Type, tree: Global.Tree) extends Product with Serializable

    A class which is used to track pending implicits to prevent infinite implicit searches.

    A class which is used to track pending implicits to prevent infinite implicit searches.

    Definition Classes
      Implicits
38.  class SearchResult extends AnyRef

    The result of an implicit search

    The result of an implicit search

    Definition Classes
      Implicits
39.  abstract class Inferencer extends Analyzer.InferencerContextErrors with Analyzer.InferCheckable

    The context-dependent inferencer part

    The context-dependent inferencer part

    Definition Classes
      Infer
40.  class NoInstance extends Throwable with ControlThrowable
    Definition Classes
      Infer
41.  class DefMacroExpander extends Analyzer.MacroExpander

    Expands a term macro used in apply role as `M(2)(3)` in `val x = M(2)(3)`.

    Expands a term macro used in apply role as `M(2)(3)` in `val x = M(2)(3)`.

    Definition Classes
      Macros
42.  case class Delayed (delayed: Global.Tree) extends Analyzer.MacroStatus with Product with Serializable
    Definition Classes
      Macros
43.  case class Failure (failure: Global.Tree) extends Analyzer.MacroStatus with Product with Serializable
    Definition Classes
      Macros
44.  case class Fallback (fallback: Global.Tree) extends Analyzer.MacroStatus with Product with Serializable
    Definition Classes
      Macros
45.  case class MacroArgs (c: Analyzer.MacroContext, others: List[Any]) extends Product with Serializable

    Calculate the arguments to pass to a macro implementation when expanding the provided tree.

    Calculate the arguments to pass to a macro implementation when expanding the provided tree.

    Definition Classes
      Macros
46.  abstract class MacroExpander extends AnyRef

    Performs macro expansion:

    Performs macro expansion:

    ###### Expandable trees

    A term of one of the following shapes:

    Ident(<term macro>) Select(<any qualifier>, <term macro>) TypeApply(<any of the above>, <targs>) Apply(...Apply(<any of the above>, <args1>)...<argsN>)

    ###### Macro expansion

    First of all `macroExpandXXX`: 1) If necessary desugars the `expandee` to fit into the default expansion scheme that is understood by `macroExpandWithRuntime` / `macroExpandWithoutRuntime`

    Then `macroExpandWithRuntime`: 2) Checks whether the expansion needs to be delayed 3) Loads macro implementation using `macroMirror` 4) Synthesizes invocation arguments for the macro implementation 5) Checks that the result is a tree or an expr bound to this universe

    Finally `macroExpandXXX`: 6) Validates the expansion against the white list of supported tree shapes 7) Typechecks the result as required by the circumstances of the macro application

    If -Ymacro-debug-lite is enabled, you will get basic notifications about macro expansion along with macro expansions logged in the form that can be copy/pasted verbatim into REPL.

    If -Ymacro-debug-verbose is enabled, you will get detailed log of how exactly this function performs class loading and method resolution in order to load the macro implementation. The log will also include other non-trivial steps of macro expansion.

    returns

      the expansion result if the expansion has been successful, the fallback tree if the expansion has been unsuccessful, but there is a fallback, the expandee unchanged if the expansion has been delayed, the expandee fully expanded if the expansion has been delayed before and has been expanded now, the expandee with an error marker set if the expansion has been cancelled due malformed arguments or implementation the expandee with an error marker set if there has been an error

    Definition Classes
      Macros
47.  case class MacroImplBinding (isBundle: Boolean, isBlackbox: Boolean, className: String, methName: String, signature: List[List[Fingerprint]], targs: List[Global.Tree]) extends Product with Serializable

    Represents all the information that a macro definition needs to know about its implementation.

    Represents all the information that a macro definition needs to know about its implementation. Includes a path to load the implementation via Java reflection, and various accounting information necessary when composing an argument list for the reflective invocation.

    Definition Classes
      Macros
48.  sealed abstract class MacroStatus extends AnyRef
    Definition Classes
      Macros
49.  case class Skipped (skipped: Global.Tree) extends Analyzer.MacroStatus with Product with Serializable
    Definition Classes
      Macros
50.  case class Success (expanded: Global.Tree) extends Analyzer.MacroStatus with Product with Serializable
    Definition Classes
      Macros
51.  class ClassMethodSynthesis extends AnyRef
    Definition Classes
      MethodSynthesis
52.  trait MethodSynth extends AnyRef

    There are two key methods in here.

    There are two key methods in here.

    1) Enter methods such as enterGetterSetter are called from Namer with a tree which may generate further trees such as accessors or implicit wrappers. Some setup is performed. In general this creates symbols and enters them into the scope of the owner.

    2) addDerivedTrees is called from Typer when a Template is typed. It completes the job, returning a list of trees with their symbols set to those created in the enter methods. Those trees then become part of the typed template.

    Definition Classes
      MethodSynthesis
53.  class CompleterWrapper extends Analyzer.TypeCompleter

    Wrap an existing completer to do some post/pre-processing of the completed type.

    Wrap an existing completer to do some post/pre-processing of the completed type.

    Definition Classes
      Namers
54.  trait LockingTypeCompleter extends Analyzer.TypeCompleter
    Definition Classes
      Namers
55.  abstract class Namer extends Analyzer.MethodSynth with Analyzer.NamerContextErrors
    Definition Classes
      Namers
56.  class PolyTypeCompleter extends Analyzer.TypeCompleter with Analyzer.LockingTypeCompleter with Global.FlagAgnosticCompleter

    A class representing a lazy type with known type parameters.

    A class representing a lazy type with known type parameters. `ctx` is the namer context in which the `owner` is defined.

    Constructing a PolyTypeCompleter for a DefDef creates type skolems for the type parameters and assigns them to the `tparams` trees.

    Definition Classes
      Namers
57.  abstract class TypeCompleter extends Global.LazyType
    Definition Classes
      Namers
58.  abstract class TypeCompleterBase [T <: Global.Tree] extends Analyzer.TypeCompleter with Analyzer.LockingTypeCompleter with Global.FlagAgnosticCompleter
    Definition Classes
      Namers
59.  class CaseApplyDefaultGetters extends AnyRef
    Definition Classes
      NamesDefaults
60.  class ConstructorDefaultsAttachment extends AnyRef
    Definition Classes
      NamesDefaults
61.  class DefaultsOfLocalMethodAttachment extends AnyRef
    Definition Classes
      NamesDefaults
62.  case class NamedApplyInfo (qual: Option[Global.Tree], targs: List[Global.Tree], vargss: List[List[Global.Tree]], blockTyper: Analyzer.Typer) extends Product with Serializable
    Definition Classes
      NamesDefaults
63.  trait PatternTyper extends AnyRef
    Definition Classes
      PatternTypers
64.  case class MacroExpanderAttachment (original: Global.Tree, desugared: Global.Tree) extends Product with Serializable

    Scratchpad for the macro expander, which is used to store all intermediate data except the details about the runtime.

    Scratchpad for the macro expander, which is used to store all intermediate data except the details about the runtime.

    Definition Classes
      StdAttachments
65.  case class MacroExpansionAttachment (expandee: Global.Tree, expanded: Any) extends Product with Serializable

    Is added by the macro engine to originals and results of macro expansions.

    Is added by the macro engine to originals and results of macro expansions. Stores the original expandee as it entered the `macroExpand` function.

    Definition Classes
      StdAttachments
66.  case class MacroRuntimeAttachment (delayed: Boolean, typerContext: Analyzer.Context, macroContext: Option[Analyzer.MacroContext]) extends Product with Serializable
    Definition Classes
      StdAttachments
67.  case class SuperArgsAttachment (argss: List[List[Global.Tree]]) extends Product with Serializable

    After being synthesized by the parser, primary constructors aren't fully baked yet.

    After being synthesized by the parser, primary constructors aren't fully baked yet. A call to super in such constructors is just a fill-me-in-later dummy resolved later by `parentTypes`. This attachment coordinates `parentTypes` and `typedTemplate` and allows them to complete the synthesis.

    Definition Classes
      StdAttachments
68.  trait Tag extends AnyRef
    Definition Classes
      Tags
69.  case class TypeDiag (tp: Global.Type, sym: Global.Symbol) extends Ordered[(TypeDiagnostics.this)#TypeDiag] with Product with Serializable
    Definition Classes
      TypeDiagnostics
70.  trait TyperDiagnostics extends AnyRef
    Definition Classes
      TypeDiagnostics
71.  sealed abstract class SilentResult [+T] extends AnyRef
    Definition Classes
      Typers
72.  case class SilentResultValue [+T](value: T) extends Analyzer.SilentResult[T] with Product with Serializable
    Definition Classes
      Typers
73.  class SilentTypeError extends Analyzer.SilentResult[Nothing]
    Definition Classes
      Typers
74.  abstract class Typer extends Analyzer.TyperDiagnostics with Analyzer.Adaptation with Analyzer.Tag with Analyzer.PatternTyper with Analyzer.TyperContextErrors
    Definition Classes
      Typers
75.  class ClassForCaseCompanionAttachment extends AnyRef
    Definition Classes
      Unapplies

### Value Members

1.  object CODE
   Definition Classes
     TreeDSL
2.  final def !=(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
3.  final def ##(): Int
   Definition Classes
     AnyRef → Any
4.  def +(other: String): String
   Implicit
     This member is added by an implicit conversion from SpecializationDuplicator to any2stringadd[SpecializationDuplicator] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
5.  def ->[B](y: B): (SpecializationDuplicator, B)
   Implicit
     This member is added by an implicit conversion from SpecializationDuplicator to ArrowAssoc[SpecializationDuplicator] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
6.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
7.  lazy val AmbiguousSearchFailure: SearchResult
   Definition Classes
     Implicits
8.  def Delay(expanded: Global.Tree): Delayed
   Definition Classes
     Macros
9.  lazy val DivergentSearchFailure: SearchResult
   Definition Classes
     Implicits
10.  val ImportType: Global.ImportType.type
    Definition Classes
      Contexts
11.  def MacroCantExpand210xMacrosError(internalMessage: String): Nothing
    Definition Classes
      ContextErrors
12.  def MacroCantExpandIncompatibleMacrosError(internalMessage: String): Nothing
    Definition Classes
      ContextErrors
13.  def NoImplicitFoundError(tree: Global.Tree, param: Global.Symbol)(implicit context: Context): Unit
    Definition Classes
      ContextErrors
14.  val NoImplicitInfo: ImplicitInfo

    A sentinel indicating no implicit was found

    A sentinel indicating no implicit was found

    Definition Classes
      Implicits
15.  lazy val SearchFailure: SearchResult
    Definition Classes
      Implicits
16.  def Skip(expanded: Global.Tree): Skipped
    Definition Classes
      Macros
17.  val _openMacros: collection.immutable.List[reflect.macros.contexts.Context { val universe: SpecializationDuplicator.this.global.type }]

    Keeps track of macros in-flight.

    Keeps track of macros in-flight. See more informations in comments to `openMacros` in `scala.reflect.macros.whitebox.Context`.

    Definition Classes
      Macros
18.  def abstractVarMessage(sym: Global.Symbol): String

    An explanatory note to be added to error messages when there's a problem with abstract var defs

    An explanatory note to be added to error messages when there's a problem with abstract var defs

    Definition Classes
      TypeDiagnostics
19.  def adaptAnnotations(tree: Global.Tree, typer: Typer, mode: Mode, pt: Global.Type): Global.Tree

    Definition Classes
      AnalyzerPlugins
    See also

      AnalyzerPlugin.adaptAnnotations

20.  def addAnalyzerPlugin(plugin: AnalyzerPlugin): Unit

    Registers a new analyzer plugin

    Registers a new analyzer plugin

    Definition Classes
      AnalyzerPlugins
21.  def addDefaults(givenArgs: List[Global.Tree], qual: Option[Global.Tree], targs: List[Global.Tree], previousArgss: List[List[Global.Tree]], params: List[Global.Symbol], pos: Position, context: Context): (List[Global.Tree], List[Global.Symbol])

    Extend the argument list `givenArgs` with default arguments.

    Extend the argument list `givenArgs` with default arguments. Defaults are added as named arguments calling the corresponding default getter.

    Example: given def foo(x: Int = 2, y: String = "def") foo(y = "lt") the argument list (y = "lt") is transformed to (y = "lt", x = foo$default$1())

    Definition Classes
      NamesDefaults
22.  def addMacroPlugin(plugin: MacroPlugin): Unit

    Registers a new macro plugin

    Registers a new macro plugin

    Definition Classes
      AnalyzerPlugins
23.  def addSyntheticMethods(templ: Global.Template, clazz0: Global.Symbol, context: Context): Global.Template

    Add the synthetic methods to case classes.

    Add the synthetic methods to case classes.

    Definition Classes
      SyntheticMethods
24.  def allArgsArePositional(a: Array[Int]): Boolean

    returns `true` if every element is equal to its index

    returns `true` if every element is equal to its index

    Definition Classes
      NamesDefaults
25.  def allViewsFrom(tp: Global.Type, context: Context, tpars: List[Global.Symbol]): List[(SearchResult, List[Global.TypeConstraint])]

    Find all views from type `tp` (in which `tpars` are free)

    Find all views from type `tp` (in which `tpars` are free)

    Note that the trees in the search results in the returned list share the same type variables. Ignore their constr field! The list of type constraints returned along with each tree specifies the constraints that must be met by the corresponding type parameter in `tpars` (for the returned implicit view to be valid).

    tp

      from-type for the implicit conversion

    context

      search implicits here

    tpars

      symbols that should be considered free type variables (implicit search should not try to solve them, just track their constraints)

    Definition Classes
      Implicits
26.  def alternatives(tree: Global.Tree): List[Global.Type]
    Definition Classes
      TypeDiagnostics
27.  def alternativesString(tree: Global.Tree): String
    Definition Classes
      TypeDiagnostics
28.  def ambiguousDefnAndImport(owner: Global.Symbol, imp: ImportInfo): Global.LookupAmbiguous
    Definition Classes
      Contexts
29.  def ambiguousImports(imp1: ImportInfo, imp2: ImportInfo): Global.LookupAmbiguous
    Definition Classes
      Contexts
30.  final def asInstanceOf[T0]: T0
    Definition Classes
      Any
31.  def bindMacroImpl(macroDef: Global.Symbol, macroImplRef: Global.Tree): Unit
    Definition Classes
      Macros
32.  def canAdaptAnnotations(tree: Global.Tree, typer: Typer, mode: Mode, pt: Global.Type): Boolean

    Definition Classes
      AnalyzerPlugins
    See also

      AnalyzerPlugin.canAdaptAnnotations

33.  final def caseAccessorName(caseclazz: Global.Symbol, paramName: Global.TermName): Global.TermName

    Does not force the info of `caseclazz`

    Does not force the info of `caseclazz`

    Definition Classes
      SyntheticMethods
34.  def caseClassCopyMeth(cdef: Global.ClassDef): Option[Global.DefDef]

    Generates copy methods for case classes.

    Generates copy methods for case classes. Copy only has defaults on the first parameter list, as of scala/bug#5009.

    The parameter types of the copy method need to be exactly the same as the parameter types of the primary constructor. Just copying the TypeTree is not enough: a type `C` might refer to something else *inside* the class (i.e. as parameter type of `copy`) than *outside* the class (i.e. in the class parameter list).

    One such example is t0054.scala: class A { case class B(x: C) extends A { def copy(x: C = x) = ... } class C {} } (1) (2)

    The reference (1) to C is `A.this.C`. The reference (2) is `B.this.C` - not the same.

    This is fixed with a hack currently. `Unapplies.caseClassCopyMeth`, which creates the copy method, uses empty `TypeTree()` nodes for parameter types.

    In `Namers.enterDefDef`, the copy method gets a special type completer (`enterCopyMethod`). Before computing the body type of `copy`, the class parameter types are assigned the copy method parameters.

    This attachment class stores the copy method parameter ValDefs as an attachment in the ClassDef of the case class.

    Definition Classes
      Unapplies
35.  def caseModuleApplyMeth(cdef: Global.ClassDef): Global.DefDef

    The apply method corresponding to a case class

    The apply method corresponding to a case class

    Definition Classes
      Unapplies
36.  def caseModuleDef(cdef: Global.ClassDef): Global.ModuleDef

    The module corresponding to a case class; overrides toString to show the module's name

    The module corresponding to a case class; overrides toString to show the module's name

    Definition Classes
      Unapplies
37.  def caseModuleUnapplyMeth(cdef: Global.ClassDef): Global.DefDef

    The unapply method corresponding to a case class

    The unapply method corresponding to a case class

    Definition Classes
      Unapplies
38.  final def clearRenamedCaseAccessors(caseclazz: Global.Symbol): Unit
    Definition Classes
      SyntheticMethods
39.  def clone(): AnyRef
    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
40.  def companionModuleDef(cdef: Global.ClassDef, parents: List[Global.Tree] = Nil, body: List[Global.Tree] = Nil): Global.ModuleDef
    Definition Classes
      Unapplies
41.  def companionSymbolOf(original: Global.Symbol, ctx: Context): Global.Symbol

    The companion class or companion module of `original`.

    The companion class or companion module of `original`. Calling .companionModule does not work for classes defined inside methods.

    !!! Then why don't we fix companionModule? Does the presence of these methods imply all the places in the compiler calling sym.companionModule are bugs waiting to be reported? If not, why not? When exactly do we need to call this method?

    Definition Classes
      Namers
42.  def computeMacroDefTypeFromMacroImplRef(macroDdef: Global.DefDef, macroImplRef: Global.Tree): Global.Type
    Definition Classes
      Macros
43.  def decodeWithKind(name: Global.Name, owner: Global.Symbol): String
    Definition Classes
      TypeDiagnostics
44.  def decreaseMetalevel(tp: Global.Type): Global.Type

    Decreases metalevel of the type, i.e.

    Decreases metalevel of the type, i.e. transforms: * c.Expr[T] to T * Nothing to Nothing * Anything else to NoType

    Definition Classes
      Helpers
    See also

      Metalevels.scala for more information and examples about metalevels

45.  def defaultGetter(param: Global.Symbol, context: Context): Global.Symbol

    For a parameter with default argument, find the method symbol of the default getter.

    For a parameter with default argument, find the method symbol of the default getter.

    Definition Classes
      NamesDefaults
46.  def defaultMacroClassloader: ClassLoader
    Definition Classes
      MacroRuntimes
47.  def directUnapplyMember(tp: Global.Type): Global.Symbol

    Returns unapply or unapplySeq if available, without further checks.

    Returns unapply or unapplySeq if available, without further checks.

    Definition Classes
      Unapplies
48.  def disambiguate(ss: List[String]): collection.immutable.List[String]
    Definition Classes
      TypeDiagnostics
49.  def enclosingMacroPosition: Position
    Definition Classes
      Macros
50.  def ensuring(cond: (SpecializationDuplicator) ⇒ Boolean, msg: ⇒ Any): SpecializationDuplicator
    Implicit
      This member is added by an implicit conversion from SpecializationDuplicator to Ensuring[SpecializationDuplicator] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
51.  def ensuring(cond: (SpecializationDuplicator) ⇒ Boolean): SpecializationDuplicator
    Implicit
      This member is added by an implicit conversion from SpecializationDuplicator to Ensuring[SpecializationDuplicator] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
52.  def ensuring(cond: Boolean, msg: ⇒ Any): SpecializationDuplicator
    Implicit
      This member is added by an implicit conversion from SpecializationDuplicator to Ensuring[SpecializationDuplicator] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
53.  def ensuring(cond: Boolean): SpecializationDuplicator
    Implicit
      This member is added by an implicit conversion from SpecializationDuplicator to Ensuring[SpecializationDuplicator] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
54.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
55.  def equals(arg0: Any): Boolean
    Definition Classes
      AnyRef → Any
56.  def etaExpand(unit: Global.CompilationUnit, tree: Global.Tree, typer: Typer): Global.Tree

    Expand partial method application `p.f(es_1)...(es_n)`.

    Expand partial method application `p.f(es_1)...(es_n)`.

    We expand this to the following block, which evaluates the target of the application and its supplied arguments if needed (they are not stable), and then wraps a Function that abstracts over the missing arguments.

    ```{ private synthetic val eta$f = p.f // if p is not stable ... private synthetic val eta$e_i = e_i // if e_i is not stable ... (ps_1 => ... => ps_m => eta$f([es_1])...([es_m])(ps_1)...(ps_m)) } `````````

    This is called from instantiateToMethodType after type checking `tree`, and we realize we have a method type, where a function type (builtin or SAM) is expected.

    Definition Classes
      EtaExpansion
57.  final def exampleTuplePattern(names: List[Global.Name]): String

    [a, b, c] => "(a, b, c)" [a, B] => "(param1, param2)" [a, B, c] => "(param1, ..., param2)"

    [a, b, c] => "(a, b, c)" [a, B] => "(param1, param2)" [a, B, c] => "(param1, ..., param2)"

    Definition Classes
      TypeDiagnostics
58.  def existentialContext(tp: Global.Type): String
    Definition Classes
      TypeDiagnostics
59.  def explainAlias(tp: Global.Type): String
    Definition Classes
      TypeDiagnostics
60.  def explainAnyVsAnyRef(found: Global.Type, req: Global.Type): String
    Definition Classes
      TypeDiagnostics
61.  def explainVariance(found: Global.Type, req: Global.Type): String

    Look through the base types of the found type for any which might have been valid subtypes if given conformant type arguments.

    Look through the base types of the found type for any which might have been valid subtypes if given conformant type arguments. Examine those for situations where the type error would have been eliminated if the variance were different. In such cases, append an additional explanatory message.

    TODO: handle type aliases better.

    Definition Classes
      TypeDiagnostics
62.  def factoryMeth(mods: Global.Modifiers, name: Global.TermName, cdef: Global.ClassDef): Global.DefDef

    The apply method corresponding to a case class

    The apply method corresponding to a case class

    Definition Classes
      Unapplies
63.  final def falseIfNoInstance(body: ⇒ Boolean): Boolean
    Definition Classes
      Infer
    Annotations
      @inline()
64.  lazy val fastTrack: FastTrack[SpecializationDuplicator.this.type]
    Definition Classes
      Macros
65.  def finalOwners(tpe: Global.Type): Boolean
    Definition Classes
      TypeDiagnostics
66.  def finalize(): Unit
    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
67.  def findMacroClassLoader(): ClassLoader

    Obtains a `ClassLoader` instance used for macro expansion.

    Obtains a `ClassLoader` instance used for macro expansion.

    By default a new `ScalaClassLoader` is created using the classpath from global and the classloader of self as parent.

    Mirrors with runtime definitions (e.g. Repl) need to adjust this method.

    Attributes
      protected
    Definition Classes
      Macros
68.  final def forArgMode(fun: Global.Tree, mode: Mode): reflect.internal.Mode
    Definition Classes
      Typers
69.  def formalTypes(formals: List[Global.Type], numArgs: Int, removeByName: Boolean = true, removeRepeated: Boolean = true): List[Global.Type]

    The formal parameter types corresponding to `formals`.

    The formal parameter types corresponding to `formals`. If `formals` has a repeated last parameter, a list of (numArgs - numFormals + 1) copies of its type is appended to the other formals. By-name types are replaced with their underlying type.

    removeByName

      allows keeping ByName parameters. Used in NamesDefaults.

    removeRepeated

      allows keeping repeated parameter (if there's one argument). Used in NamesDefaults.

    Definition Classes
      Infer
70.  def formatted(fmtstr: String): String
    Implicit
      This member is added by an implicit conversion from SpecializationDuplicator to StringFormat[SpecializationDuplicator] performed by method StringFormat in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @inline()
71.  def foundReqMsg(found: Global.Type, req: Global.Type): String
    Definition Classes
      TypeDiagnostics
72.  def freshVar(tparam: Global.Symbol): Global.TypeVar

    A fresh type variable with given type parameter as origin.

    A fresh type variable with given type parameter as origin.

    Definition Classes
      Infer
73.  def fullSiteString(context: Context): String
    Definition Classes
      TypersTracking
74.  final def getClass(): Class[_]
    Definition Classes
      AnyRef → Any
75.  val global: SpecializeTypes.global.type
    Definition Classes
      Duplicator → Analyzer → TreeDSL
76.  def globalSettings: Settings
    Definition Classes
      Macros → Traces
77.  def hasMacroExpansionAttachment(any: Any): Boolean

    Determines whether the target is either an original or a result of a macro expansion.

    Determines whether the target is either an original or a result of a macro expansion. The parameter is of type `Any`, because macros can expand both into trees and into annotations.

    Definition Classes
      StdAttachments
78.  val hasPendingMacroExpansions: Boolean

    Without any restrictions on macro expansion, macro applications will expand at will, and when type inference is involved, expansions will end up using yet uninferred type params.

    Without any restrictions on macro expansion, macro applications will expand at will, and when type inference is involved, expansions will end up using yet uninferred type params.

    For some macros this might be ok (thanks to TreeTypeSubstituter that replaces the occurrences of undetparams with their inferred values), but in general case this won't work. E.g. for reification simple substitution is not enough - we actually need to re-reify inferred types.

    Luckily, there exists a very simple way to fix the problem: delay macro expansion until everything is inferred. Here are the exact rules. Macro application gets delayed if any of its subtrees contain: 1) type vars (tpe.isInstanceOf[TypeVar]) // [Eugene] this check is disabled right now, because TypeVars seem to be created from undetparams anyways 2) undetparams (sym.isTypeParameter && !sym.isSkolem)

    Definition Classes
      Macros
79.  def hasSuperArgs(tree: Global.Tree): Boolean

    Determines whether the given tree has an associated SuperArgsAttachment.

    Determines whether the given tree has an associated SuperArgsAttachment.

    Definition Classes
      StdAttachments
80.  def hashCode(): Int
    Definition Classes
      AnyRef → Any
81.  def increaseMetalevel(pre: Global.Type, tp: Global.Type): Global.Type

    Increases metalevel of the type, i.e.

    Increases metalevel of the type, i.e. transforms: * T to c.Expr[T]

    Definition Classes
      Helpers
    See also

      Metalevels.scala for more information and examples about metalevels

82.  def inferImplicit(tree: Global.Tree, pt: Global.Type, isView: Boolean, context: Context, silent: Boolean, withMacrosDisabled: Boolean, pos: Global.Position, onError: (Global.Position, String) ⇒ Unit): Global.Tree

    A friendly wrapper over inferImplicit to be used in macro contexts and toolboxes.

    A friendly wrapper over inferImplicit to be used in macro contexts and toolboxes.

    Definition Classes
      Implicits
83.  def inferImplicit(tree: Global.Tree, pt: Global.Type, reportAmbiguous: Boolean, isView: Boolean, context: Context, saveAmbiguousDivergent: Boolean, pos: Global.Position): SearchResult

    Search for an implicit value.

    Search for an implicit value. Consider using one of the convenience methods above. This one has many boolean levers.

    See the comment on `result` at the end of class `ImplicitSearch` for more info how the search is conducted.

    tree

      The tree for which the implicit needs to be inserted. (the inference might instantiate some of the undetermined type parameters of that tree.

    pt

      The expected type of the implicit.

    reportAmbiguous

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

    isView

      We are looking for a view

    context

      The current context

    saveAmbiguousDivergent

      False if any divergent/ambiguous errors should be ignored after implicits search, true if they should be reported (used in further typechecking).

    pos

      Position that is should be used for tracing and error reporting (useful when we infer synthetic stuff and pass EmptyTree in the `tree` argument) If it's set NoPosition, then position-based services will use `tree.pos`

    returns

      A search result

    Definition Classes
      Implicits
84.  def inferImplicitByType(pt: Global.Type, context: Context, pos: Global.Position = NoPosition): SearchResult
    Definition Classes
      Implicits
85.  def inferImplicitByTypeSilent(pt: Global.Type, context: Context, pos: Global.Position = NoPosition): SearchResult
    Definition Classes
      Implicits
86.  def inferImplicitFor(pt: Global.Type, tree: Global.Tree, context: Context, reportAmbiguous: Boolean = true): SearchResult
    Definition Classes
      Implicits
87.  def inferImplicitView(from: Global.Type, to: Global.Type, tree: Global.Tree, context: Context, reportAmbiguous: Boolean, saveAmbiguousDivergent: Boolean): SearchResult
    Definition Classes
      Implicits
88.  def isBlackbox(macroDef: Global.Symbol): Boolean
    Definition Classes
      Macros
89.  def isBlackbox(expandee: Global.Tree): Boolean
    Definition Classes
      Macros
90.  def isDynamicRewrite(tree: Global.Tree): Boolean
    Definition Classes
      StdAttachments
91.  def isIndividualImport(s: Global.ImportSelector): Boolean
    Definition Classes
      Contexts
92.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
93.  def isMacroExpansionSuppressed(tree: Global.Tree): Boolean

    Determines whether a tree should not be expanded, because someone has put SuppressMacroExpansionAttachment on it or one of its children.

    Determines whether a tree should not be expanded, because someone has put SuppressMacroExpansionAttachment on it or one of its children.

    Definition Classes
      StdAttachments
94.  def isMacroImplRef(tree: Global.Tree): Boolean

    Determines whether a tree should or should not be adapted, because someone has put MacroImplRefAttachment on it.

    Determines whether a tree should or should not be adapted, because someone has put MacroImplRefAttachment on it.

    Definition Classes
      StdAttachments
95.  def isMaskImport(s: Global.ImportSelector): Boolean
    Definition Classes
      Contexts
96.  def isNamedArg(arg: Global.Tree): Boolean
    Definition Classes
      NamesDefaults
97.  def isWildcardImport(s: Global.ImportSelector): Boolean
    Definition Classes
      Contexts
98.  val lastAccessCheckDetails: String
    Definition Classes
      Contexts
99.  val lastTreeToTyper: Global.Tree
    Definition Classes
      TypersTracking
100.  def linePrecedes(t1: Global.Tree, t2: Global.Tree): Boolean
     Definition Classes
       TypeDiagnostics
101.  def linkExpandeeAndDesugared(expandee: Global.Tree, desugared: Global.Tree): Unit

     After macro expansion is completed, links the expandee and the expansion result by annotating them both with a `MacroExpansionAttachment`.

     After macro expansion is completed, links the expandee and the expansion result by annotating them both with a `MacroExpansionAttachment`.

     Definition Classes
       StdAttachments
102.  def linkExpandeeAndExpanded(expandee: Global.Tree, expanded: Any): Unit

     After macro expansion is completed, links the expandee and the expansion result by annotating them both with a `MacroExpansionAttachment`.

     After macro expansion is completed, links the expandee and the expansion result by annotating them both with a `MacroExpansionAttachment`. The `expanded` parameter is of type `Any`, because macros can expand both into trees and into annotations.

     Definition Classes
       StdAttachments
103.  final def linkedClassOfClassOf(original: Global.Symbol, ctx: Context): Global.Symbol

     A version of `Symbol#linkedClassOfClass` that works with local companions, ala `companionSymbolOf`.

     A version of `Symbol#linkedClassOfClass` that works with local companions, ala `companionSymbolOf`.

     Definition Classes
       Namers
104.  def loadMacroImplBinding(macroDef: Global.Symbol): Option[MacroImplBinding]
     Definition Classes
       Macros
105.  def macroArgs(typer: Typer, expandee: Global.Tree): MacroArgs
     Definition Classes
       Macros
106.  def macroContext(typer: Typer, prefixTree: Global.Tree, expandeeTree: Global.Tree): MacroContext
     Definition Classes
       Macros
107.  val macroDebugLite: Boolean
     Definition Classes
       Traces
108.  val macroDebugVerbose: Boolean
     Definition Classes
       Traces
109.  def macroEngine: String

     Macro def -> macro impl bindings are serialized into a `macroImpl` annotation with synthetic content that carries the payload described in `MacroImplBinding`.

     Macro def -> macro impl bindings are serialized into a `macroImpl` annotation with synthetic content that carries the payload described in `MacroImplBinding`.

     For example, for a pair of macro definition and macro implementation: def impl(c: scala.reflect.macros.blackbox.Context): c.Expr[Unit] = ??? def foo: Unit = macro impl

     We will have the following annotation added on the macro definition `foo`:

     Definition Classes
       Macros
110.  def macroExpand(typer: Typer, expandee: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree

     Expands a term macro used in apply role as `M(2)(3)` in `val x = M(2)(3)`.

     Expands a term macro used in apply role as `M(2)(3)` in `val x = M(2)(3)`.

     Definition Classes
       Macros
     See also

       DefMacroExpander

111.  def macroExpandAll(typer: Typer, expandee: Global.Tree): Global.Tree

     Performs macro expansion on all subtrees of a given tree.

     Performs macro expansion on all subtrees of a given tree. Innermost macros are expanded first, outermost macros are expanded last. See the documentation for `macroExpand` for more information.

     Definition Classes
       Macros
112.  def macroExpandWithRuntime(typer: Typer, expandee: Global.Tree, runtime: MacroRuntime): MacroStatus

     Expands a macro when a runtime (i.e.

     Expands a macro when a runtime (i.e. the macro implementation) can be successfully loaded Meant for internal use within the macro infrastructure, don't use it elsewhere.

     Definition Classes
       Macros
113.  def macroExpandWithoutRuntime(typer: Typer, expandee: Global.Tree): MacroStatus

     Expands a macro when a runtime (i.e.

     Expands a macro when a runtime (i.e. the macro implementation) cannot be loaded Meant for internal use within the macro infrastructure, don't use it elsewhere.

     Definition Classes
       Macros
114.  def macroExpandee(tree: Global.Tree): Global.Tree

     Returns the original tree of the macro expansion if the argument is a macro expansion or EmptyTree otherwise.

     Returns the original tree of the macro expansion if the argument is a macro expansion or EmptyTree otherwise.

     Definition Classes
       StdAttachments
115.  def macroExpanderAttachment(tree: Global.Tree): MacroExpanderAttachment

     Loads underlying MacroExpanderAttachment from a macro expandee or returns a default value for that attachment.

     Loads underlying MacroExpanderAttachment from a macro expandee or returns a default value for that attachment.

     Definition Classes
       StdAttachments
116.  final def macroLogLite(msg: ⇒ Any): Unit
     Definition Classes
       Traces
     Annotations
       @inline()
117.  final def macroLogVerbose(msg: ⇒ Any): Unit
     Definition Classes
       Traces
     Annotations
       @inline()
118.  def macroRuntime(expandee: Global.Tree): MacroRuntime

     Produces a function that can be used to invoke macro implementation for a given macro definition: 1) Looks up macro implementation symbol in this universe.

     Produces a function that can be used to invoke macro implementation for a given macro definition: 1) Looks up macro implementation symbol in this universe. 2) Loads its enclosing class from the macro classloader. 3) Loads the companion of that enclosing class from the macro classloader. 4) Resolves macro implementation within the loaded companion.

     returns

       Requested runtime if macro implementation can be loaded successfully from either of the mirrors, `null` otherwise.

     Definition Classes
       MacroRuntimes
119.  def makeNamedTypes(syms: List[Global.Symbol]): collection.immutable.List[Global.NamedType]
     Definition Classes
       NamesDefaults
120.  def markDynamicRewrite(tree: Global.Tree): Global.Tree
     Definition Classes
       StdAttachments
121.  def markMacroImplRef(tree: Global.Tree): Global.Tree

     Marks the tree as a macro impl reference, which is a naked reference to a method.

     Marks the tree as a macro impl reference, which is a naked reference to a method.

     This is necessary for typechecking macro impl references (see `DefaultMacroCompiler.defaultResolveMacroImpl`), because otherwise typing a naked reference will result in the "follow this method with `_` if you want to treat it as a partially applied function" errors.

     This mark suppresses adapt except for when the annottee is a macro application.

     Definition Classes
       StdAttachments
122.  def memberWildcardType(name: Global.Name, tp: Global.Type): Global.Type

     A constructor for types ?{ def/type name: tp }, used in infer view to member searches.

     A constructor for types ?{ def/type name: tp }, used in infer view to member searches.

     Definition Classes
       Implicits
123.  def missingParams[T](args: List[T], params: List[Global.Symbol], argName: (T) ⇒ Option[Global.Name]): (List[Global.Symbol], Boolean)

     Returns the parameter symbols of an invocation expression that are not defined by the list of arguments.

     Returns the parameter symbols of an invocation expression that are not defined by the list of arguments.

     args

       The list of arguments

     params

       The list of parameter symbols of the invoked method

     argName

       A function that extracts the name of an argument expression, if it is a named argument.

     Definition Classes
       NamesDefaults
124.  final def ne(arg0: AnyRef): Boolean
     Definition Classes
       AnyRef
125.  def newBodyDuplicator(context: Context): BodyDuplicator
     Attributes
       protected
     Definition Classes
       Duplicator → Duplicators
126.  def newNamer(context: Context): Namer
     Definition Classes
       Namers
127.  def newTyper(context: Context): Typer

     Return the special typer for duplicate method bodies.

     Return the special typer for duplicate method bodies.

     Definition Classes
       Duplicators → Typers
128.  def noPrintAdapt(tree1: Global.Tree, tree2: Global.Tree): Boolean
     Definition Classes
       TypersTracking
129.  def noPrintTyping(t: Global.Tree): Boolean
     Definition Classes
       TypersTracking
130.  def normalize(tp: Global.Type): Global.Type

     Automatically perform the following conversions on expression types: A method type becomes the corresponding function type.

     Automatically perform the following conversions on expression types: A method type becomes the corresponding function type. A nullary method type becomes its result type. Implicit parameters are skipped. This method seems to be performance critical.

     Definition Classes
       Infer
131.  def notAnyRefMessage(found: Global.Type): String
     Definition Classes
       ContextErrors
132.  final def notify(): Unit
     Definition Classes
       AnyRef
133.  final def notifyAll(): Unit
     Definition Classes
       AnyRef
134.  def notifyUndetparamsAdded(newUndets: List[Global.Symbol]): Unit
     Definition Classes
       Macros
135.  def notifyUndetparamsInferred(undetNoMore: List[Global.Symbol], inferreds: List[Global.Type]): Unit
     Definition Classes
       Macros
136.  def onTreeCheckerError(pos: Global.Position, msg: String): Unit
     Attributes
       protected
     Definition Classes
       Contexts
137.  def openMacros: collection.immutable.List[reflect.macros.contexts.Context { val universe: SpecializationDuplicator.this.global.type }]
     Definition Classes
       Macros
138.  def pluginsEnsureCompanionObject(namer: Namer, cdef: Global.ClassDef, creator: (Global.ClassDef) ⇒ Global.Tree = companionModuleDef(_)): Global.Symbol

     Definition Classes
       AnalyzerPlugins
     See also

       MacroPlugin.pluginsEnsureCompanionObject

139.  def pluginsEnterStats(typer: Typer, stats: List[Global.Tree]): List[Global.Tree]

     Definition Classes
       AnalyzerPlugins
     See also

       MacroPlugin.pluginsEnterStats

140.  def pluginsEnterSym(namer: Namer, tree: Global.Tree): Context

     Definition Classes
       AnalyzerPlugins
     See also

       MacroPlugin.pluginsEnterSym

141.  def pluginsIsBlackbox(macroDef: Global.Symbol): Boolean

     Definition Classes
       AnalyzerPlugins
     See also

       MacroPlugin.pluginsIsBlackbox

142.  def pluginsMacroArgs(typer: Typer, expandee: Global.Tree): MacroArgs

     Definition Classes
       AnalyzerPlugins
     See also

       MacroPlugin.pluginsMacroArgs

143.  def pluginsMacroExpand(typer: Typer, expandee: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree

     Definition Classes
       AnalyzerPlugins
     See also

       MacroPlugin.pluginsMacroExpand

144.  def pluginsMacroRuntime(expandee: Global.Tree): MacroRuntime

     Definition Classes
       AnalyzerPlugins
     See also

       MacroPlugin.pluginsMacroRuntime

145.  def pluginsPt(pt: Global.Type, typer: Typer, tree: Global.Tree, mode: Mode): Global.Type

     Definition Classes
       AnalyzerPlugins
     See also

       AnalyzerPlugin.pluginsPt

146.  def pluginsTypeSig(tpe: Global.Type, typer: Typer, defTree: Global.Tree, pt: Global.Type): Global.Type

     Definition Classes
       AnalyzerPlugins
     See also

       AnalyzerPlugin.pluginsTypeSig

147.  def pluginsTypeSigAccessor(tpe: Global.Type, typer: Typer, tree: Global.ValDef, sym: Global.Symbol): Global.Type

     Definition Classes
       AnalyzerPlugins
     See also

       AnalyzerPlugin.pluginsTypeSigAccessor

148.  def pluginsTyped(tpe: Global.Type, typer: Typer, tree: Global.Tree, mode: Mode, pt: Global.Type): Global.Type

     Definition Classes
       AnalyzerPlugins
     See also

       AnalyzerPlugin.pluginsTyped

149.  def pluginsTypedMacroBody(typer: Typer, ddef: Global.DefDef): Global.Tree

     Definition Classes
       AnalyzerPlugins
     See also

       MacroPlugin.pluginsTypedMacroBody

150.  def pluginsTypedReturn(tpe: Global.Type, typer: Typer, tree: Global.Return, pt: Global.Type): Global.Type

     Definition Classes
       AnalyzerPlugins
     See also

       AnalyzerPlugin.pluginsTypedReturn

151.  def popMacroContext(): Unit
     Definition Classes
       Macros
152.  def posPrecedes(p1: Global.Position, p2: Global.Position): Boolean

     Does the positioned line assigned to t1 precede that of t2?

     Does the positioned line assigned to t1 precede that of t2?

     Definition Classes
       TypeDiagnostics
153.  def printingOk(t: Global.Tree): Boolean
     Definition Classes
       TypersTracking
154.  def propagateKnownTypes(from: Global.Type, to: Global.Symbol): Global.Type

     The applied type of class 'to' after inferring anything possible from the knowledge that 'to' must also be of the type given in 'from'.

     The applied type of class 'to' after inferring anything possible from the knowledge that 'to' must also be of the type given in 'from'.

     Definition Classes
       Checkable
155.  def pushMacroContext(c: MacroContext): Unit
     Definition Classes
       Macros
156.  final def recursivelyFinal(tpe: Global.Type): Boolean
     Definition Classes
       TypeDiagnostics
     Annotations
       @tailrec()
157.  def removeNames(typer: Typer)(args: List[Global.Tree], params: List[Global.Symbol]): (List[Global.Tree], Array[Int])

     Removes name assignments from args.

     Removes name assignments from args. Additionally, returns an array mapping argument indices from call-site-order to definition-site-order.

     Verifies that names are not specified twice, and positional args don't appear after named ones.

     Definition Classes
       NamesDefaults
158.  def reorderArgs[T](args: List[T], pos: (Int) ⇒ Int)(implicit arg0: ClassTag[T]): List[T]

     pos

       maps indices from old to new

     Definition Classes
       NamesDefaults
159.  def resetContexts(): Unit
     Definition Classes
       Contexts
160.  def resetDocComments(): Unit
     Definition Classes
       Typers
161.  def resetImplicits(): Unit
     Definition Classes
       Implicits
162.  def resetTyper(): Unit
     Definition Classes
       Typers
163.  def restrictionError(pos: Global.Position, unit: Global.CompilationUnit, msg: String): Unit
     Definition Classes
       TypeDiagnostics
164.  def restrictionWarning(pos: Global.Position, unit: Global.CompilationUnit, msg: String): Unit

     For errors which are artifacts of the implementation: such messages indicate that the restriction may be lifted in the future.

     For errors which are artifacts of the implementation: such messages indicate that the restriction may be lifted in the future.

     Definition Classes
       TypeDiagnostics
165.  def retyped(context: Context, tree: Global.Tree, oldThis: Global.Symbol, newThis: Global.Symbol, env: Map[Global.Symbol, Global.Type]): Global.Tree

     Retype the given tree in the given context.

     Retype the given tree in the given context. Use this method when retyping a method in a different class. The typer will replace references to the this of the old class with the new class, and map symbols through the given 'env'. The environment is a map from type skolems to concrete types (see SpecializedTypes).

     Definition Classes
       SpecializationDuplicator → Duplicators
166.  def rootContext(unit: Global.CompilationUnit, tree: Global.Tree = EmptyTree, throwing: Boolean = false, checking: Boolean = false): Context
     Definition Classes
       Contexts
167.  def rootContextPostTyper(unit: Global.CompilationUnit, tree: Global.Tree = EmptyTree): Context
     Definition Classes
       Contexts
168.  def rootImports(unit: Global.CompilationUnit): List[Global.Symbol]

     List of symbols to import from in a root context.

     List of symbols to import from in a root context. Typically that is `java.lang`, `scala`, and scala.Predef, in that order. Exceptions:

     - if option `-Yno-imports` is given, nothing is imported
     - if the unit is java defined, only `java.lang` is imported
     - if option `-Yno-predef` is given, if the unit body has an import of Predef among its leading imports, or if the tree is scala.Predef, `Predef` is not imported.
     Attributes
       protected
     Definition Classes
       Contexts
169.  def setAddendum(pos: Global.Position, msg: () ⇒ String): Unit
     Definition Classes
       TypeDiagnostics
170.  final val shortenImports: Boolean(false)
     Definition Classes
       Typers
171.  def skipImplicit(tp: Global.Type): Global.Type
     Definition Classes
       Infer
172.  def solvedTypes(tvars: List[Global.TypeVar], tparams: List[Global.Symbol], variances: List[Variance], upper: Boolean, depth: Depth): List[Global.Type]

     Solve constraint collected in types `tvars`.

     Solve constraint collected in types `tvars`.

     tvars

       All type variables to be instantiated.

     tparams

       The type parameters corresponding to `tvars`

     variances

       The variances of type parameters; need to reverse solution direction for all contravariant variables.

     upper

       When `true` search for max solution else min.

     Definition Classes
       Infer
     Exceptions thrown
173.  def standardIsBlackbox(macroDef: Global.Symbol): Boolean

     Default implementation of `isBlackbox`.

     Default implementation of `isBlackbox`. Can be overridden by analyzer plugins (see AnalyzerPlugins.pluginsIsBlackbox for more details)

     Definition Classes
       Macros
174.  def standardMacroArgs(typer: Typer, expandee: Global.Tree): MacroArgs

     Default implementation of `macroArgs`.

     Default implementation of `macroArgs`. Can be overridden by analyzer plugins (see AnalyzerPlugins.pluginsMacroArgs for more details)

     Definition Classes
       Macros
175.  def standardMacroExpand(typer: Typer, expandee: Global.Tree, mode: Mode, pt: Global.Type): Global.Tree

     Default implementation of `macroExpand`.

     Default implementation of `macroExpand`. Can be overridden by analyzer plugins (see AnalyzerPlugins.pluginsMacroExpand for more details)

     Definition Classes
       Macros
176.  def standardMacroRuntime(expandee: Global.Tree): MacroRuntime
     Definition Classes
       MacroRuntimes
177.  def standardTypedMacroBody(typer: Typer, macroDdef: Global.DefDef): Global.Tree

     Default implementation of `typedMacroBody`.

     Default implementation of `typedMacroBody`. Can be overridden by analyzer plugins (see AnalyzerPlugins.pluginsTypedMacroBody for more details)

     Definition Classes
       Macros
178.  def superArgs(tree: Global.Tree): Option[List[List[Global.Tree]]]

     Convenience method for `SuperArgsAttachment`.

     Convenience method for `SuperArgsAttachment`. Compared with `MacroRuntimeAttachment` this attachment has different a usage pattern, so it really benefits from a dedicated extractor.

     Definition Classes
       StdAttachments
179.  def suppressMacroExpansion(tree: Global.Tree): Global.Tree

     Suppresses macro expansion of the tree by putting SuppressMacroExpansionAttachment on it.

     Suppresses macro expansion of the tree by putting SuppressMacroExpansionAttachment on it.

     Definition Classes
       StdAttachments
180.  final def synchronized[T0](arg0: ⇒ T0): T0
     Definition Classes
       AnyRef
181.  def toString(): String
     Definition Classes
       AnyRef → Any
182.  def tpe_s(tp: Global.Type, colorize: (String) ⇒ String): String
     Definition Classes
       TypersTracking
183.  def transformNamedApplication(typer: Typer, mode: Mode, pt: Global.Type)(tree: Global.Tree, argPos: (Int) ⇒ Int): Global.Tree

     Transform a function application into a Block, and assigns typer.context .namedApplyBlockInfo to the new block as side-effect.

     Transform a function application into a Block, and assigns typer.context .namedApplyBlockInfo to the new block as side-effect. If tree has the form Apply(fun, args) first the function "fun" (which might be an application itself!) is transformed into a block of the form { val qual$1 = qualifier_of_fun val x$1 = arg_1_of_fun ... val x$n = arg_n_of_fun qual$1.fun[targs](x$1, ...)...(..., x$n) } then for each argument in args, a value is created and entered into the block. finally the application expression of the block is updated. { val qual$1 = .. ... val x$n = ... > val qual$n+1 = arg(1) > ... > val qual$n+m = arg(m) > qual$1.fun[targs](x$1, ...)...(..., x$n)(x$n+1, ..., x$n+m) }

     typer

       the typer calling this method; this method calls typer.doTypedApply

     mode

       the mode to use for calling typer.doTypedApply

     pt

       the expected type for calling typer.doTypedApply

     returns

       the transformed application (a Block) together with the NamedApplyInfo. if isNamedApplyBlock(tree), returns the existing context.namedApplyBlockInfo

     Definition Classes
       NamesDefaults
184.  def transformTypeTagEvidenceParams(macroImplRef: Global.Tree, transform: (Global.Symbol, Global.Symbol) ⇒ Global.Symbol): List[List[Global.Symbol]]

     Transforms parameters lists of a macro impl.

     Transforms parameters lists of a macro impl. The `transform` function is invoked only for WeakTypeTag evidence parameters.

     The transformer takes two arguments: a value parameter from the parameter list and a type parameter that is witnesses by the value parameter.

     If the transformer returns a NoSymbol, the value parameter is not included from the result. If the transformer returns something else, this something else is included in the result instead of the value parameter.

     Despite of being highly esoteric, this function significantly simplifies signature analysis. For example, it can be used to strip macroImpl.paramss from the evidences (necessary when checking def <-> impl correspondence) or to streamline creation of the list of macro arguments.

     Definition Classes
       Helpers
185.  val transformed: AnyRefMap[Global.Tree, Global.Tree]
     Definition Classes
       Typers
186.  def treeSymTypeMsg(tree: Global.Tree): String
     Definition Classes
       TypeDiagnostics
187.  def typePatternAdvice(sym: Global.Symbol, ptSym: Global.Symbol): String
     Definition Classes
       TypeDiagnostics
188.  def typedMacroBody(typer: Typer, macroDdef: Global.DefDef): Global.Tree

     Verifies that the body of a macro def typechecks to a reference to a static public non-overloaded method or a top-level macro bundle, and that that method is signature-wise compatible with the given macro definition.

     Verifies that the body of a macro def typechecks to a reference to a static public non-overloaded method or a top-level macro bundle, and that that method is signature-wise compatible with the given macro definition.

     returns

       Macro impl reference for the given macro definition if everything is okay. EmptyTree if an error occurs.

     Definition Classes
       Macros
189.  def typingInPattern[T](body: ⇒ T): T

     Devising new ways of communicating error info out of desperation to work on error messages.

     Devising new ways of communicating error info out of desperation to work on error messages. This is used by typedPattern to wrap its business so we can generate a sensible error message when things go south.

     Definition Classes
       TypeDiagnostics
190.  def unapplyMember(tp: Global.Type): Global.Symbol

     Filters out unapplies with multiple (non-implicit) parameter lists, as they cannot be used as extractors

     Filters out unapplies with multiple (non-implicit) parameter lists, as they cannot be used as extractors

     Definition Classes
       Unapplies
191.  def underlyingSymbol(member: Global.Symbol): Global.Symbol

     The symbol which the given accessor represents (possibly in part).

     The symbol which the given accessor represents (possibly in part). This is used for error messages, where we want to speak in terms of the actual declaration or definition, not in terms of the generated setters and getters.

     TODO: is it wise to create new symbols simply to generate error message? is this safe in interactive/resident mode?

     Definition Classes
       TypeDiagnostics
192.  def unmarkDynamicRewrite(tree: Global.Tree): Global.Tree
     Definition Classes
       StdAttachments
193.  def unmarkMacroImplRef(tree: Global.Tree): Global.Tree

     Unmarks the tree as a macro impl reference (see `markMacroImplRef` for more information).

     Unmarks the tree as a macro impl reference (see `markMacroImplRef` for more information).

     This is necessary when a tree that was previously deemed to be a macro impl reference, typechecks to be a macro application. Then we need to unmark it, expand it and try to treat its expansion as a macro impl reference.

     Definition Classes
       StdAttachments
194.  def unsuppressMacroExpansion(tree: Global.Tree): Global.Tree

     Unsuppresses macro expansion of the tree by removing SuppressMacroExpansionAttachment from it and its children.

     Unsuppresses macro expansion of the tree by removing SuppressMacroExpansionAttachment from it and its children.

     Definition Classes
       StdAttachments
195.  def untypeMetalevel(tp: Global.Type): Global.Type

     Transforms c.Expr[T] types into c.Tree and leaves the rest unchanged.

     Transforms c.Expr[T] types into c.Tree and leaves the rest unchanged.

     Definition Classes
       Helpers
196.  final def wait(): Unit
     Definition Classes
       AnyRef
     Annotations
       @throws( ... )
197.  final def wait(arg0: Long, arg1: Int): Unit
     Definition Classes
       AnyRef
     Annotations
       @throws( ... )
198.  final def wait(arg0: Long): Unit
     Definition Classes
       AnyRef
     Annotations
       @throws( ... )
199.  def warnUnusedImports(unit: Global.CompilationUnit): Unit
     Definition Classes
       Contexts
200.  def withAddendum(pos: Global.Position): (String) ⇒ String
     Definition Classes
       TypeDiagnostics
201.  def withDisambiguation[T](locals: List[Global.Symbol], types: Global.Type*)(op: ⇒ T): T

     Given any number of types, alters the name information in the symbols until they can be distinguished from one another: then executes the given code.

     Given any number of types, alters the name information in the symbols until they can be distinguished from one another: then executes the given code. The names are restored and the result is returned.

     Definition Classes
       TypeDiagnostics
202.  def →[B](y: B): (SpecializationDuplicator, B)
     Implicit
       This member is added by an implicit conversion from SpecializationDuplicator to ArrowAssoc[SpecializationDuplicator] performed by method ArrowAssoc in scala.Predef.
     Definition Classes
       ArrowAssoc
203.  object namerFactory extends SubComponent
     Definition Classes
       Analyzer
204.  object packageObjects extends SubComponent
     Definition Classes
       Analyzer
205.  object typerFactory extends SubComponent
     Definition Classes
       Analyzer
206.  object ErrorUtils
     Definition Classes
       ContextErrors
207.  object NamesDefaultsErrorsGen
     Definition Classes
       ContextErrors
208.  object NoContext extends Analyzer.Context
     Definition Classes
       Contexts
209.  object Function1

     An extractor for unary function types arg => res

     An extractor for unary function types arg => res

     Definition Classes
       Implicits
210.  object HasMember

     An extractor for types of the form ? { name: ? }

     An extractor for types of the form ? { name: ? }

     Definition Classes
       Implicits
211.  object HasMethodMatching

     An extractor for types of the form ? { name: (? >: argtpe <: Any*)restp }

     An extractor for types of the form ? { name: (? >: argtpe <: Any*)restp }

     Definition Classes
       Implicits
212.  object ImplicitAmbiguousMsg extends Analyzer.ImplicitAnnotationMsg
     Definition Classes
       Implicits
213.  object ImplicitNotFoundMsg extends Analyzer.ImplicitAnnotationMsg
     Definition Classes
       Implicits
214.  object OpenImplicit extends Serializable
     Definition Classes
       Implicits
215.  object instantiate extends Global.TypeMap

     Map every TypeVar to its constraint.inst field.

     Map every TypeVar to its constraint.inst field. throw a NoInstance exception if a NoType or WildcardType is encountered.

     Definition Classes
       Infer
216.  object MacroImplBinding extends Serializable
     Definition Classes
       Macros
217.  object DynamicRewriteAttachment extends Product with Serializable

     Since mkInvoke, the applyDynamic/selectDynamic/etc desugarer, is disconnected from typedNamedApply, the applyDynamicNamed argument rewriter, the latter doesn’t know whether it needs to apply the rewriting because the application has just been desugared or it needs to hold on because it’s already performed a desugaring on this tree.

     Since mkInvoke, the applyDynamic/selectDynamic/etc desugarer, is disconnected from typedNamedApply, the applyDynamicNamed argument rewriter, the latter doesn’t know whether it needs to apply the rewriting because the application has just been desugared or it needs to hold on because it’s already performed a desugaring on this tree. This has led to scala/bug#8006.

     This attachment solves the problem by providing a means of communication between the two Dynamic desugarers, which solves the aforementioned issue.

     Definition Classes
       StdAttachments
218.  object MacroImplRefAttachment extends Product with Serializable

     Definition Classes
       StdAttachments
     See also

       markMacroImplRef

219.  object SuppressMacroExpansionAttachment extends Product with Serializable

     When present, suppresses macro expansion for the host.

     When present, suppresses macro expansion for the host. This is occasionally necessary, e.g. to prohibit eta-expansion of macros.

     Does not affect expandability of child nodes, there's context.withMacrosDisabled for that (but think thrice before using that API - see the discussion at https://github.com/scala/scala/pull/1639).

     Definition Classes
       StdAttachments
220.  object SilentTypeError
     Definition Classes
       Typers
221.  object typingStack
     Definition Classes
       TypersTracking
222.  object HasUnapply
     Definition Classes
       Unapplies

### Deprecated Value Members

1.  def inferImplicit(tree: Global.Tree, pt: Global.Type, reportAmbiguous: Boolean, isView: Boolean, context: Context, saveAmbiguousDivergent: Boolean): SearchResult
   Definition Classes
     Implicits
   Annotations
     @deprecated
   Deprecated

     (Since version 2.12.0-M4) Unused in scalac

2.  def inferImplicit(tree: Global.Tree, pt: Global.Type, reportAmbiguous: Boolean, isView: Boolean, context: Context): SearchResult
   Definition Classes
     Implicits
   Annotations
     @deprecated
   Deprecated

     (Since version 2.12.0-M4) Unused in scalac

3.  def mkTypeCompleter(t: Global.Tree)(c: (Global.Symbol) ⇒ Unit): TypeCompleterBase[Global.Tree]
   Definition Classes
     Namers
   Annotations
     @deprecated
   Deprecated

     (Since version 2.12.2) Instantiate TypeCompleterBase (for monomorphic, non-wrapping completer) or CompleterWrapper directly.

### Inherited from Duplicator

### Inherited from Duplicators

### Inherited from Analyzer

### Inherited from AnalyzerPlugins

### Inherited from StdAttachments

### Inherited from ContextErrors

### Inherited from TypeDiagnostics

### Inherited from NamesDefaults

### Inherited from Macros

### Inherited from Helpers

### Inherited from Traces

### Inherited from MacroRuntimes

### Inherited from JavaReflectionRuntimes

### Inherited from Unapplies

### Inherited from SyntheticMethods

### Inherited from TreeDSL

### Inherited from EtaExpansion

### Inherited from Implicits

### Inherited from Infer

### Inherited from Checkable

### Inherited from Typers

### Inherited from PatternTypers

### Inherited from TypersTracking

### Inherited from Tags

### Inherited from Adaptations

### Inherited from Namers

### Inherited from MethodSynthesis

### Inherited from Contexts

### Inherited from AnyRef

### Inherited from Any

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

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

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

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

### Ungrouped