abstract class TreeCheckers extends Analyzer

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Inherited
  1. TreeCheckers
  2. Analyzer
  3. AnalyzerPlugins
  4. StdAttachments
  5. ContextErrors
  6. TypeDiagnostics
  7. NamesDefaults
  8. Macros
  9. Helpers
  10. Traces
  11. MacroRuntimes
  12. JavaReflectionRuntimes
  13. Unapplies
  14. SyntheticMethods
  15. TreeDSL
  16. EtaExpansion
  17. Implicits
  18. Infer
  19. Checkable
  20. Typers
  21. PatternTypers
  22. TypersTracking
  23. Tags
  24. Adaptations
  25. Namers
  26. MethodSynthesis
  27. Contexts
  28. AnyRef
  29. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
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Instance Constructors

  1. new TreeCheckers()

Type Members

  1. trait JavaReflectionResolvers extends AnyRef
    Definition Classes
    JavaReflectionRuntimes
  2. class MacroRuntimeResolver extends tools.nsc.typechecker.Analyzer.JavaReflectionResolvers
    Definition Classes
    MacroRuntimes
  3. trait Adaptation extends AnyRef
    Definition Classes
    Adaptations
  4. trait AnalyzerPlugin extends AnyRef
    Definition Classes
    AnalyzerPlugins
  5. trait MacroPlugin extends AnyRef

    Definition Classes
    AnalyzerPlugins
  6. trait InferCheckable extends AnyRef
    Definition Classes
    Checkable
  7. abstract class AbsAmbiguousTypeError extends Analyzer.AbsTypeError
    Definition Classes
    ContextErrors
  8. sealed abstract class AbsTypeError extends AnyRef
    Definition Classes
    ContextErrors
  9. case class AccessTypeError(underlyingTree: Global.Tree, errMsg: String) extends Analyzer.TreeTypeError with Product with Serializable
    Definition Classes
    ContextErrors
  10. case class AmbiguousImplicitTypeError(underlyingTree: Global.Tree, errMsg: String) extends Analyzer.AbsAmbiguousTypeError with Product with Serializable
    Definition Classes
    ContextErrors
  11. case class AmbiguousTypeError(errPos: Global.Position, errMsg: String) extends Analyzer.AbsAmbiguousTypeError with Product with Serializable
    Definition Classes
    ContextErrors
  12. case class DivergentImplicitTypeError(underlyingTree: Global.Tree, pt0: Global.Type, sym: Global.Symbol) extends Analyzer.TreeTypeError with Product with Serializable
    Definition Classes
    ContextErrors
  13. trait ImplicitsContextErrors extends AnyRef
    Definition Classes
    ContextErrors
  14. trait InferencerContextErrors extends AnyRef
    Definition Classes
    ContextErrors
  15. trait NamerContextErrors extends AnyRef
    Definition Classes
    ContextErrors
  16. case class NormalTypeError(underlyingTree: Global.Tree, errMsg: String) extends Analyzer.TreeTypeError with Product with Serializable
    Definition Classes
    ContextErrors
  17. 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
  18. case class PosAndMsgTypeError(errPos: Global.Position, errMsg: String) extends Analyzer.AbsTypeError with Product with Serializable
    Definition Classes
    ContextErrors
  19. case class SymbolTypeError(underlyingSym: Global.Symbol, errMsg: String) extends Analyzer.AbsTypeError with Product with Serializable
    Definition Classes
    ContextErrors
  20. sealed abstract class TreeTypeError extends Analyzer.AbsTypeError
    Definition Classes
    ContextErrors
  21. case class TypeErrorWithUnderlyingTree(tree: Global.Tree, ex: Global.TypeError) extends Analyzer.AbsTypeError with Product with Serializable
    Definition Classes
    ContextErrors
  22. case class TypeErrorWrapper(ex: Global.TypeError) extends Analyzer.AbsTypeError with Product with Serializable
    Definition Classes
    ContextErrors
  23. trait TyperContextErrors extends AnyRef
    Definition Classes
    ContextErrors
  24. 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
  25. 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
  26. trait ImportContext extends Analyzer.Context

    A Context focussed on an Import tree

    A Context focussed on an Import tree

    Definition Classes
    Contexts
  27. class ImportInfo extends AnyRef
    Definition Classes
    Contexts
  28. class ImplicitAnnotationMsg extends AnyRef
    Definition Classes
    Implicits
  29. class ImplicitInfo extends AnyRef

    A class that records an available implicit

    A class that records an available implicit

    Definition Classes
    Implicits
  30. 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
  31. class Message extends AnyRef
    Definition Classes
    Implicits
  32. 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
  33. class SearchResult extends AnyRef

    The result of an implicit search

    The result of an implicit search

    Definition Classes
    Implicits
  34. final case class AdjustedTypeArgs(okParams: List[Global.Symbol], okArgs: List[Global.Type], undetParams: List[Global.Symbol], allArgs: List[Global.Type]) extends Product with Serializable
    Definition Classes
    Infer
  35. abstract class Inferencer extends Analyzer.InferencerContextErrors with Analyzer.InferCheckable

    The context-dependent inferencer part

    The context-dependent inferencer part

    Definition Classes
    Infer
  36. class NoInstance extends Throwable with ControlThrowable
    Definition Classes
    Infer
  37. 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
  38. case class Delayed(delayed: Global.Tree) extends Analyzer.MacroStatus with Product with Serializable
    Definition Classes
    Macros
  39. case class Failure(failure: Global.Tree) extends Analyzer.MacroStatus with Product with Serializable
    Definition Classes
    Macros
  40. case class Fallback(fallback: Global.Tree) extends Analyzer.MacroStatus with Product with Serializable
    Definition Classes
    Macros
  41. 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
  42. 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
  43. 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
  44. sealed abstract class MacroStatus extends AnyRef
    Definition Classes
    Macros
  45. case class Skipped(skipped: Global.Tree) extends Analyzer.MacroStatus with Product with Serializable
    Definition Classes
    Macros
  46. case class Success(expanded: Global.Tree) extends Analyzer.MacroStatus with Product with Serializable
    Definition Classes
    Macros
  47. class ClassMethodSynthesis extends AnyRef
    Definition Classes
    MethodSynthesis
  48. 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
  49. 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
  50. trait LockingTypeCompleter extends Analyzer.TypeCompleter
    Definition Classes
    Namers
  51. abstract class Namer extends Analyzer.MethodSynth with Analyzer.NamerContextErrors
    Definition Classes
    Namers
  52. 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
  53. abstract class TypeCompleter extends Global.LazyType
    Definition Classes
    Namers
  54. abstract class TypeCompleterBase[T <: Global.Tree] extends Analyzer.TypeCompleter with Analyzer.LockingTypeCompleter with Global.FlagAgnosticCompleter
    Definition Classes
    Namers
  55. class CaseApplyDefaultGetters extends AnyRef
    Definition Classes
    NamesDefaults
  56. class ConstructorDefaultsAttachment extends AnyRef
    Definition Classes
    NamesDefaults
  57. class DefaultsOfLocalMethodAttachment extends AnyRef
    Definition Classes
    NamesDefaults
  58. 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
  59. trait PatternTyper extends AnyRef
    Definition Classes
    PatternTypers
  60. 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
  61. 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
  62. case class MacroRuntimeAttachment(delayed: Boolean, typerContext: Analyzer.Context, macroContext: Option[Analyzer.MacroContext]) extends Product with Serializable
    Definition Classes
    StdAttachments
  63. case class OriginalTreeAttachment(original: Global.Tree) extends Product with Serializable

    Marks a tree that has been adapted by typer and sets the original tree that was in place before.

    Marks a tree that has been adapted by typer and sets the original tree that was in place before.

    Keeping track of the original trees were is an important feature for some compiler plugins (like Scalameta) and the incremental compiler (Zinc). In both cases, adapting trees loses information in some sense and do not allow external tools to capture some information stored in user-defined trees that are optimized away by early phases (mostly, typer).

    See how the absence of this attachment blocks Zinc: https://github.com/sbt/zinc/issues/227. Related: https://github.com/scala/scala-dev/issues/340.

    This attachment is, at the moment, only used to keep track of constant-folded constants. It has a generic wording in the hope that in the future can be reused in the same context to keep track of other adapted trees.

    Definition Classes
    StdAttachments
  64. 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
  65. trait Tag extends AnyRef
    Definition Classes
    Tags
  66. case class DiffResult[T](lost: List[T], gained: List[T]) extends Product with Serializable
  67. type ImportType = Global.ImportType
    Definition Classes
    Contexts
  68. type MacroContext = UnaffiliatedMacroContext { val universe: TreeCheckers.this.global.type }
    Definition Classes
    StdAttachments
  69. type MacroRuntime = (MacroArgs) ⇒ Any

    Abstracts away resolution of macro runtimes.

    Abstracts away resolution of macro runtimes.

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

Abstract Value Members

  1. abstract val global: Global
    Definition Classes
    Analyzer → TreeDSL

Concrete Value Members

  1. object CODE
    Definition Classes
    TreeDSL
  2. object namerFactory extends SubComponent
    Definition Classes
    Analyzer
  3. object packageObjects extends SubComponent
    Definition Classes
    Analyzer
  4. object typerFactory extends SubComponent
    Definition Classes
    Analyzer
  5. object ErrorUtils
    Definition Classes
    ContextErrors
  6. object NamesDefaultsErrorsGen
    Definition Classes
    ContextErrors
  7. object NoContext extends Analyzer.Context
    Definition Classes
    Contexts
  8. object Function1

    An extractor for unary function types arg => res

    An extractor for unary function types arg => res

    Definition Classes
    Implicits
  9. object HasMember

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

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

    Definition Classes
    Implicits
  10. 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
  11. object ImplicitAmbiguousMsg extends Analyzer.ImplicitAnnotationMsg
    Definition Classes
    Implicits
  12. object ImplicitNotFoundMsg extends Analyzer.ImplicitAnnotationMsg
    Definition Classes
    Implicits
  13. object OpenImplicit extends Serializable
    Definition Classes
    Implicits
  14. object Shadower
    Definition Classes
    Implicits
  15. object approximateAbstracts extends Global.TypeMap
    Definition Classes
    Infer
  16. 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
  17. object toOrigin extends Global.TypeMap
    Definition Classes
    Infer
  18. object MacroImplBinding extends Serializable
    Definition Classes
    Macros
  19. object NamedApplyBlock
    Definition Classes
    NamesDefaults
  20. 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
  21. object MacroImplRefAttachment extends Product with Serializable

    Definition Classes
    StdAttachments
    See also

    markMacroImplRef

  22. object MethodValueAttachment extends Product with Serializable

    Added to trees that appear in a method value, e.g., to f(x) in f(x) _

    Added to trees that appear in a method value, e.g., to f(x) in f(x) _

    Definition Classes
    StdAttachments
  23. 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
  24. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  25. final def ##(): Int
    Definition Classes
    AnyRef → Any
  26. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from TreeCheckers to any2stringadd[TreeCheckers] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  27. def ->[B](y: B): (TreeCheckers, B)
    Implicit
    This member is added by an implicit conversion from TreeCheckers to ArrowAssoc[TreeCheckers] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  28. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  29. lazy val AmbiguousSearchFailure: SearchResult
    Definition Classes
    Implicits
  30. def Delay(expanded: Global.Tree): Delayed
    Definition Classes
    Macros
  31. lazy val DivergentSearchFailure: SearchResult
    Definition Classes
    Implicits
  32. val ImportType: Global.ImportType.type
    Definition Classes
    Contexts
  33. def MacroCantExpand210xMacrosError(internalMessage: String): Nothing
    Definition Classes
    ContextErrors
  34. def MacroCantExpandIncompatibleMacrosError(internalMessage: String): Nothing
    Definition Classes
    ContextErrors
  35. def NoImplicitFoundError(tree: Global.Tree, param: Global.Symbol)(implicit context: Context): Unit
    Definition Classes
    ContextErrors
  36. val NoImplicitInfo: ImplicitInfo

    A sentinel indicating no implicit was found

    A sentinel indicating no implicit was found

    Definition Classes
    Implicits
  37. lazy val SearchFailure: SearchResult
    Definition Classes
    Implicits
  38. def Skip(expanded: Global.Tree): Skipped
    Definition Classes
    Macros
  39. val _openMacros: collection.immutable.List[reflect.macros.contexts.Context { val universe: TreeCheckers.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
  40. 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
  41. def adaptAnnotations(tree: Global.Tree, typer: Typer, mode: Mode, pt: Global.Type): Global.Tree

    Definition Classes
    AnalyzerPlugins
    See also

    AnalyzerPlugin.adaptAnnotations

  42. def addAnalyzerPlugin(plugin: AnalyzerPlugin): Unit

    Registers a new analyzer plugin

    Registers a new analyzer plugin

    Definition Classes
    AnalyzerPlugins
  43. 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
  44. def addMacroPlugin(plugin: MacroPlugin): Unit

    Registers a new macro plugin

    Registers a new macro plugin

    Definition Classes
    AnalyzerPlugins
  45. 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
  46. 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
  47. 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
  48. def alternatives(tree: Global.Tree): List[Global.Type]
    Definition Classes
    TypeDiagnostics
  49. def alternativesString(tree: Global.Tree): String
    Definition Classes
    TypeDiagnostics
  50. def ambiguousDefnAndImport(owner: Global.Symbol, imp: ImportInfo): Global.LookupAmbiguous
    Definition Classes
    Contexts
  51. def ambiguousImports(imp1: ImportInfo, imp2: ImportInfo): Global.LookupAmbiguous
    Definition Classes
    Contexts
  52. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  53. def assertFn(cond: Boolean, msg: ⇒ Any): Unit
  54. def bindMacroImpl(macroDef: Global.Symbol, macroImplRef: Global.Tree): Unit
    Definition Classes
    Macros
  55. def canAdaptAnnotations(tree: Global.Tree, typer: Typer, mode: Mode, pt: Global.Type): Boolean

    Definition Classes
    AnalyzerPlugins
    See also

    AnalyzerPlugin.canAdaptAnnotations

  56. 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
  57. 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
  58. 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
  59. 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
  60. 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
  61. def check(unit: Global.CompilationUnit): Unit
  62. def checkTrees(): Unit
  63. def clearDelayed(): Unit
    Definition Classes
    Macros
  64. final def clearRenamedCaseAccessors(caseclazz: Global.Symbol): Unit
    Definition Classes
    SyntheticMethods
  65. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  66. def companionModuleDef(cdef: Global.ClassDef, parents: List[Global.Tree] = Nil, body: List[Global.Tree] = Nil): Global.ModuleDef
    Definition Classes
    Unapplies
  67. 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
  68. def computeMacroDefTypeFromMacroImplRef(macroDdef: Global.DefDef, macroImplRef: Global.Tree): Global.Type
    Definition Classes
    Macros
  69. def decodeWithKind(name: Global.Name, owner: Global.Symbol): String
    Definition Classes
    TypeDiagnostics
  70. 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

  71. 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
  72. def defaultMacroClassloader: ClassLoader
    Definition Classes
    MacroRuntimes
  73. def diff(t1: Global.Tree, t2: Global.Tree): String
  74. def diffList[T](xs: List[T], ys: List[T]): DiffResult[T]
  75. def diffTemplates(t1: Global.Template, t2: Global.Template): String
  76. def diffTrees(t1: Global.Tree, t2: Global.Tree): DiffResult[Global.Tree]
  77. 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
  78. def disambiguate(ss: List[String]): collection.immutable.List[String]
    Definition Classes
    TypeDiagnostics
  79. def enclosingMacroPosition: Position
    Definition Classes
    Macros
  80. def ensuring(cond: (TreeCheckers) ⇒ Boolean, msg: ⇒ Any): TreeCheckers
    Implicit
    This member is added by an implicit conversion from TreeCheckers to Ensuring[TreeCheckers] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  81. def ensuring(cond: (TreeCheckers) ⇒ Boolean): TreeCheckers
    Implicit
    This member is added by an implicit conversion from TreeCheckers to Ensuring[TreeCheckers] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  82. def ensuring(cond: Boolean, msg: ⇒ Any): TreeCheckers
    Implicit
    This member is added by an implicit conversion from TreeCheckers to Ensuring[TreeCheckers] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  83. def ensuring(cond: Boolean): TreeCheckers
    Implicit
    This member is added by an implicit conversion from TreeCheckers to Ensuring[TreeCheckers] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  84. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  85. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  86. def errorFn(msg: Any): Unit
  87. def errorFn(pos: Global.Position, msg: Any): Unit
  88. 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
  89. 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
  90. def existentialContext(tp: Global.Type): String
    Definition Classes
    TypeDiagnostics
  91. def explainAlias(tp: Global.Type): String
    Definition Classes
    TypeDiagnostics
  92. def explainAnyVsAnyRef(found: Global.Type, req: Global.Type): String
    Definition Classes
    TypeDiagnostics
  93. 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
  94. 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
  95. final def falseIfNoInstance(body: ⇒ Boolean): Boolean
    Definition Classes
    Infer
    Annotations
    @inline()
  96. lazy val fastTrack: FastTrack[TreeCheckers.this.type]
    Definition Classes
    Macros
  97. def finalOwners(tpe: Global.Type): Boolean
    Definition Classes
    TypeDiagnostics
  98. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  99. 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
  100. final def finishComputeParamAlias(): Unit

    Finish computation of param aliases after typechecking is completed

    Finish computation of param aliases after typechecking is completed

    Definition Classes
    Typers
  101. final def forArgMode(fun: Global.Tree, mode: Mode): reflect.internal.Mode
    Definition Classes
    Typers
  102. 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
  103. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from TreeCheckers to StringFormat[TreeCheckers] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  104. def foundReqMsg(found: Global.Type, req: Global.Type): String
    Definition Classes
    TypeDiagnostics
  105. def freshNameCreatorFor(context: Context): FreshNameCreator
    Definition Classes
    Typers
  106. 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
  107. def fullSiteString(context: Context): String
    Definition Classes
    TypersTracking
  108. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  109. def globalSettings: Settings
    Definition Classes
    Macros → Traces
  110. 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
  111. 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
  112. 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
  113. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  114. 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

  115. 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
  116. 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 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 to NoPosition, then position-based services will use tree.pos

    returns

    A search result

    Definition Classes
    Implicits
  117. def inferImplicitByType(pt: Global.Type, context: Context, pos: Global.Position = NoPosition): SearchResult
    Definition Classes
    Implicits
  118. def inferImplicitByTypeSilent(pt: Global.Type, context: Context, pos: Global.Position = NoPosition): SearchResult
    Definition Classes
    Implicits
  119. def inferImplicitFor(pt: Global.Type, tree: Global.Tree, context: Context, reportAmbiguous: Boolean = true): SearchResult
    Definition Classes
    Implicits
  120. def inferImplicitView(from: Global.Type, to: Global.Type, tree: Global.Tree, context: Context, reportAmbiguous: Boolean, saveAmbiguousDivergent: Boolean): SearchResult
    Definition Classes
    Implicits
  121. def informFn(msg: Any): Unit
  122. def isBlackbox(macroDef: Global.Symbol): Boolean
    Definition Classes
    Macros
  123. def isBlackbox(expandee: Global.Tree): Boolean
    Definition Classes
    Macros
  124. def isDynamicRewrite(tree: Global.Tree): Boolean
    Definition Classes
    StdAttachments
  125. def isIndividualImport(s: Global.ImportSelector): Boolean
    Definition Classes
    Contexts
  126. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  127. 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
  128. 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
  129. def isMaskImport(s: Global.ImportSelector): Boolean
    Definition Classes
    Contexts
  130. def isNamedArg(arg: Global.Tree): Boolean
    Definition Classes
    NamesDefaults
  131. def isVariableInScope(context: Context, name: Global.Name): Boolean
    Definition Classes
    NamesDefaults
  132. def isWildcardImport(s: Global.ImportSelector): Boolean
    Definition Classes
    Contexts
  133. val lastAccessCheckDetails: String
    Definition Classes
    Contexts
  134. val lastTreeToTyper: Global.Tree
    Definition Classes
    TypersTracking
  135. def linePrecedes(t1: Global.Tree, t2: Global.Tree): Boolean
    Definition Classes
    TypeDiagnostics
  136. 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
  137. 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
  138. 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
  139. def loadMacroImplBinding(macroDef: Global.Symbol): Option[MacroImplBinding]
    Definition Classes
    Macros
  140. def macroArgs(typer: Typer, expandee: Global.Tree): MacroArgs
    Definition Classes
    Macros
  141. def macroContext(typer: Typer, prefixTree: Global.Tree, expandeeTree: Global.Tree): MacroContext
    Definition Classes
    Macros
  142. val macroDebugLite: Boolean
    Definition Classes
    Traces
  143. val macroDebugVerbose: Boolean
    Definition Classes
    Traces
  144. 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
  145. 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

  146. 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
  147. 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
  148. 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
  149. 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
  150. 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
  151. final def macroLogLite(msg: ⇒ Any): Unit
    Definition Classes
    Traces
    Annotations
    @inline()
  152. final def macroLogVerbose(msg: ⇒ Any): Unit
    Definition Classes
    Traces
    Annotations
    @inline()
  153. 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
  154. def makeNamedTypes(syms: List[Global.Symbol]): collection.immutable.List[Global.NamedType]
    Definition Classes
    NamesDefaults
  155. def markDynamicRewrite(tree: Global.Tree): Global.Tree
    Definition Classes
    StdAttachments
  156. 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
  157. 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
  158. 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
  159. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  160. def newNamer(context: Context): Namer
    Definition Classes
    Namers
  161. def newTyper(context: Context): Typer
    Definition Classes
    TreeCheckers → Typers
  162. def noPrintAdapt(tree1: Global.Tree, tree2: Global.Tree): Boolean
    Definition Classes
    TypersTracking
  163. def noPrintTyping(t: Global.Tree): Boolean
    Definition Classes
    TypersTracking
  164. 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
  165. def notAnyRefMessage(found: Global.Type): String
    Definition Classes
    ContextErrors
  166. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  167. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  168. def notifyUndetparamsAdded(newUndets: List[Global.Symbol]): Unit
    Definition Classes
    Macros
  169. def notifyUndetparamsInferred(undetNoMore: List[Global.Symbol], inferreds: List[Global.Type]): Unit
    Definition Classes
    Macros
  170. def onTreeCheckerError(pos: Global.Position, msg: String): Unit
    Attributes
    protected
    Definition Classes
    TreeCheckers → Contexts
  171. def openMacros: collection.immutable.List[reflect.macros.contexts.Context { val universe: TreeCheckers.this.global.type }]
    Definition Classes
    Macros
  172. def pluginsEnsureCompanionObject(namer: Namer, cdef: Global.ClassDef, creator: (Global.ClassDef) ⇒ Global.Tree = companionModuleDef(_)): Global.Symbol

    Definition Classes
    AnalyzerPlugins
    See also

    MacroPlugin.pluginsEnsureCompanionObject

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

    Definition Classes
    AnalyzerPlugins
    See also

    MacroPlugin.pluginsEnterStats

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

    Definition Classes
    AnalyzerPlugins
    See also

    MacroPlugin.pluginsEnterSym

  175. def pluginsIsBlackbox(macroDef: Global.Symbol): Boolean

    Definition Classes
    AnalyzerPlugins
    See also

    MacroPlugin.pluginsIsBlackbox

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

    Definition Classes
    AnalyzerPlugins
    See also

    MacroPlugin.pluginsMacroArgs

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

    Definition Classes
    AnalyzerPlugins
    See also

    MacroPlugin.pluginsMacroExpand

  178. def pluginsMacroRuntime(expandee: Global.Tree): MacroRuntime

    Definition Classes
    AnalyzerPlugins
    See also

    MacroPlugin.pluginsMacroRuntime

  179. def pluginsNotifyImplicitSearch(search: ImplicitSearch): Unit

    Definition Classes
    AnalyzerPlugins
    See also

    AnalyzerPlugin.pluginsImplicitSearch

  180. def pluginsNotifyImplicitSearchResult(result: SearchResult): Unit

    Definition Classes
    AnalyzerPlugins
    See also

    AnalyzerPlugin.pluginsImplicitSearchResult

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

    Definition Classes
    AnalyzerPlugins
    See also

    AnalyzerPlugin.pluginsPt

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

    Definition Classes
    AnalyzerPlugins
    See also

    AnalyzerPlugin.pluginsTypeSig

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

    Definition Classes
    AnalyzerPlugins
    See also

    AnalyzerPlugin.pluginsTypeSigAccessor

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

    Definition Classes
    AnalyzerPlugins
    See also

    AnalyzerPlugin.pluginsTyped

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

    Definition Classes
    AnalyzerPlugins
    See also

    MacroPlugin.pluginsTypedMacroBody

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

    Definition Classes
    AnalyzerPlugins
    See also

    AnalyzerPlugin.pluginsTypedReturn

  187. def popMacroContext(): Unit
    Definition Classes
    Macros
  188. 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
  189. def posstr(p: Global.Position): String
  190. def printingOk(t: Global.Tree): Boolean
    Definition Classes
    TypersTracking
  191. 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
  192. def pushMacroContext(c: MacroContext): Unit
    Definition Classes
    Macros
  193. final def recursivelyFinal(tpe: Global.Type): Boolean
    Definition Classes
    TypeDiagnostics
    Annotations
    @tailrec()
  194. 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
  195. 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
  196. def resetContexts(): Unit
    Definition Classes
    Contexts
  197. def resetDocComments(): Unit
    Definition Classes
    Typers
  198. def resetImplicits(): Unit
    Definition Classes
    Implicits
  199. def resetTyper(): Unit
    Definition Classes
    Typers
  200. def restrictionError(pos: Global.Position, unit: Global.CompilationUnit, msg: String): Unit
    Definition Classes
    TypeDiagnostics
  201. 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
  202. def rootContext(unit: Global.CompilationUnit, tree: Global.Tree = EmptyTree, throwing: Boolean = false, checking: Boolean = false): Context
    Definition Classes
    Contexts
  203. def rootContextPostTyper(unit: Global.CompilationUnit, tree: Global.Tree = EmptyTree): Context
    Definition Classes
    Contexts
  204. 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
  205. def runWithUnit[T](unit: Global.CompilationUnit)(body: ⇒ Unit): Unit
  206. def setAddendum(pos: Global.Position, msg: () ⇒ String): Unit
    Definition Classes
    TypeDiagnostics
  207. final val shortenImports: Boolean(false)
    Definition Classes
    Typers
  208. def skipImplicit(tp: Global.Type): Global.Type
    Definition Classes
    Infer
  209. def solvedTypes(tvars: List[Global.TypeVar], tparams: List[Global.Symbol], getVariance: Extractor[Global.Symbol], 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

    getVariance

    Function to extract variances of type parameters; we need to reverse solution direction for all contravariant variables.

    upper

    When true search for max solution else min.

    Definition Classes
    Infer
    Exceptions thrown
  210. 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
  211. 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
  212. 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
  213. def standardMacroRuntime(expandee: Global.Tree): MacroRuntime
    Definition Classes
    MacroRuntimes
  214. 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
  215. 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
  216. 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
  217. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  218. def toString(): String
    Definition Classes
    AnyRef → Any
  219. lazy val tpeOfTree: HashMap[Global.Tree, Global.Type]
  220. def tpe_s(tp: Global.Type, colorize: (String) ⇒ String): String
    Definition Classes
    TypersTracking
  221. 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
  222. 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
  223. def treeSymTypeMsg(tree: Global.Tree): String
    Definition Classes
    TypeDiagnostics
  224. def typePatternAdvice(sym: Global.Symbol, ptSym: Global.Symbol): String
    Definition Classes
    TypeDiagnostics
  225. 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
  226. def typerShouldExpandDeferredMacros: Boolean
    Definition Classes
    Macros
  227. 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
  228. 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
  229. 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
  230. def unmarkDynamicRewrite(tree: Global.Tree): Global.Tree
    Definition Classes
    StdAttachments
  231. 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
  232. 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
  233. 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
  234. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  235. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  236. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  237. def warnUnusedImports(unit: Global.CompilationUnit): Unit
    Definition Classes
    Contexts
  238. def withAddendum(pos: Global.Position): (String) ⇒ String
    Definition Classes
    TypeDiagnostics
  239. 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
  240. def →[B](y: B): (TreeCheckers, B)
    Implicit
    This member is added by an implicit conversion from TreeCheckers to ArrowAssoc[TreeCheckers] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
  241. object SymbolTracker extends Global.Traverser

    This is a work in progress, don't take it too seriously.

  242. object checkDead
    Definition Classes
    TypeDiagnostics
  243. object SilentTypeError
    Definition Classes
    Typers
  244. object checkNoEscaping extends Global.TypeMap

    Check that type of given tree does not contain local or private components.

    Check that type of given tree does not contain local or private components.

    Definition Classes
    Typers
  245. object typingStack
    Definition Classes
    TypersTracking
  246. 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 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 TreeCheckers to any2stringadd[TreeCheckers]

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

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

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

Ungrouped