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trait TreeMakers extends TypedSubstitution with CodegenCore

Source
MatchTreeMaking.scala
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  1. TreeMakers
  2. CodegenCore
  3. TypedSubstitution
  4. MatchMonadInterface
  5. AnyRef
  6. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Type Members

  1. class Substitution extends AnyRef
    Definition Classes
    TypedSubstitution
  2. trait AbsCodegen extends AnyRef
    Definition Classes
    CodegenCore
  3. trait Casegen extends AbsCodegen
    Definition Classes
    CodegenCore
  4. abstract class CommonCodegen extends AbsCodegen
    Definition Classes
    CodegenCore
  5. case class AlternativesTreeMaker(prevBinder: Global.Symbol, altss: List[List[TreeMaker]], pos: Global.Position) extends TreeMaker with NoNewBinders with Product with Serializable
  6. case class BodyTreeMaker(body: Global.Tree, matchPt: Global.Type) extends TreeMaker with NoNewBinders with Product with Serializable
  7. sealed abstract class CondTreeMaker extends FunTreeMaker
  8. case class EqualityTestTreeMaker(prevBinder: Global.Symbol, patTree: Global.Tree, pos: Global.Position) extends CondTreeMaker with Product with Serializable
  9. case class ExtractorTreeMaker(extractor: Global.Tree, extraCond: Option[Global.Tree], nextBinder: Global.Symbol)(subPatBinders: List[Global.Symbol], subPatRefs: List[Global.Tree], potentiallyMutableBinders: Set[Global.Symbol], extractorReturnsBoolean: Boolean, checkedLength: Option[Int], prevBinder: Global.Symbol, ignoredSubPatBinders: Set[Global.Symbol]) extends FunTreeMaker with PreserveSubPatBinders with Product with Serializable

    Make a TreeMaker that will result in an extractor call specified by extractor the next TreeMaker (here, we don't know which it'll be) is chained after this one by flatMap'ing a function with binder nextBinder over our extractor's result the function's body is determined by the next TreeMaker (furthermore, the interpretation of flatMap depends on the codegen instance we're using).

    Make a TreeMaker that will result in an extractor call specified by extractor the next TreeMaker (here, we don't know which it'll be) is chained after this one by flatMap'ing a function with binder nextBinder over our extractor's result the function's body is determined by the next TreeMaker (furthermore, the interpretation of flatMap depends on the codegen instance we're using).

    The values for the subpatterns, as computed by the extractor call in extractor, are stored in local variables that re-use the symbols in subPatBinders. This makes extractor patterns more debuggable (scala/bug#5739).

  10. sealed abstract class FunTreeMaker extends TreeMaker
  11. case class GuardTreeMaker(guardTree: Global.Tree) extends TreeMaker with NoNewBinders with Product with Serializable
  12. sealed trait NoNewBinders extends TreeMaker
  13. case class NonNullTestTreeMaker(prevBinder: Global.Symbol, expectedTp: Global.Type, pos: Global.Position) extends FunTreeMaker with Product with Serializable

    Make a TreeMaker that performs null check.

    Make a TreeMaker that performs null check. This is called prior to extractor call.

  14. sealed trait PreserveSubPatBinders extends TreeMaker
  15. case class ProductExtractorTreeMaker(prevBinder: Global.Symbol, extraCond: Option[Global.Tree])(subPatBinders: List[Global.Symbol], subPatRefs: List[Global.Tree], mutableBinders: List[Global.Symbol], ignoredSubPatBinders: Set[Global.Symbol]) extends FunTreeMaker with PreserveSubPatBinders with Product with Serializable

    An optimized version of ExtractorTreeMaker for Products.

    An optimized version of ExtractorTreeMaker for Products. For now, this is hard-coded to case classes, and we simply extract the case class fields.

    The values for the subpatterns, as specified by the case class fields at the time of extraction, are stored in local variables that re-use the symbols in subPatBinders. This makes extractor patterns more debuggable (scala/bug#5739) as well as avoiding mutation after the pattern has been matched (scala/bug#5158, scala/bug#6070)

    TODO: make this user-definable as follows When a companion object defines a method def unapply_1(x: T): U_1, but no def unapply or def unapplySeq, the extractor is considered to match any non-null value of type T the pattern is expected to have as many sub-patterns as there are def unapply_I(x: T): U_I methods, and the type of the I'th sub-pattern is U_I. The same exception for Seq patterns applies: if the last extractor is of type Seq[U_N], the pattern must have at least N arguments (exactly N if the last argument is annotated with : _*). The arguments starting at N (and beyond) are taken from the sequence returned by apply_N, and it is checked that that sequence has enough elements to provide values for all expected sub-patterns.

    For a case class C, the implementation is assumed to be def unapply_I(x: C) = x._I, and the extractor call is inlined under that assumption.

  16. case class SubstOnlyTreeMaker(prevBinder: Global.Symbol, nextBinder: Global.Symbol) extends TreeMaker with Product with Serializable
  17. abstract class TreeMaker extends AnyRef
  18. case class TrivialTreeMaker(tree: Global.Tree) extends TreeMaker with NoNewBinders with Product with Serializable
  19. case class TypeTestTreeMaker(prevBinder: Global.Symbol, testedBinder: Global.Symbol, expectedTp: Global.Type, nextBinderTp: Global.Type)(pos: Global.Position, extractorArgTypeTest: Boolean = false) extends CondTreeMaker with Product with Serializable

    implements the run-time aspects of (§8.2) (typedPattern has already done the necessary type transformations)

    implements the run-time aspects of (§8.2) (typedPattern has already done the necessary type transformations)

    Type patterns consist of types, type variables, and wildcards. A type pattern T is of one of the following forms:

    • A reference to a class C, p.C, or T#C. This type pattern matches any non-null instance of the given class. Note that the prefix of the class, if it is given, is relevant for determining class instances. For instance, the pattern p.C matches only instances of classes C which were created with the path p as prefix. The bottom types scala.Nothing and scala.Null cannot be used as type patterns, because they would match nothing in any case.
    • A singleton type p.type. This type pattern matches only the value denoted by the path p (that is, a pattern match involved a comparison of the matched value with p using method eq in class AnyRef). // TODO: the actual pattern matcher uses ==, so that's what I'm using for now // https://github.com/scala/bug/issues/4577 "pattern matcher, still disappointing us at equality time"
    • A compound type pattern T1 with ... with Tn where each Ti is a type pat- tern. This type pattern matches all values that are matched by each of the type patterns Ti.
    • A parameterized type pattern T[a1,...,an], where the ai are type variable patterns or wildcards _. This type pattern matches all values which match T for some arbitrary instantiation of the type variables and wildcards. The bounds or alias type of these type variable are determined as described in (§8.3).
    • A parameterized type pattern scala.Array[T1], where T1 is a type pattern. // TODO This type pattern matches any non-null instance of type scala.Array[U1], where U1 is a type matched by T1.

Abstract Value Members

  1. abstract def analyzeCases(prevBinder: Global.Symbol, cases: List[List[TreeMaker]], pt: Global.Type, suppression: Suppression): Unit
  2. abstract def codegen: AbsCodegen
    Definition Classes
    CodegenCore
  3. abstract def optimizeCases(prevBinder: Global.Symbol, cases: List[List[TreeMaker]], pt: Global.Type, selectorPos: Global.Position): (List[List[TreeMaker]], List[Global.Tree])
  4. abstract val typer: (analyzer)#Typer
    Definition Classes
    MatchMonadInterface

Concrete Value Members

  1. object EmptySubstitution extends Substitution
    Definition Classes
    TypedSubstitution
  2. object Substitution
    Definition Classes
    TypedSubstitution
  3. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def ##: Int
    Definition Classes
    AnyRef → Any
  5. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from TreeMakers toany2stringadd[TreeMakers] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  6. def ->[B](y: B): (TreeMakers, B)
    Implicit
    This member is added by an implicit conversion from TreeMakers toArrowAssoc[TreeMakers] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  7. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  8. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  9. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  10. def combineCases(scrut: Global.Tree, scrutSym: Global.Symbol, cases: List[List[TreeMaker]], pt: Global.Type, selectorPos: Global.Position, owner: Global.Symbol, matchFailGenOverride: Option[(Global.Tree) => Global.Tree], suppression: Suppression): Global.Tree
  11. def combineExtractors(treeMakers: List[TreeMaker])(casegen: Casegen): Global.Tree
  12. val debugInfoEmitVars: Boolean
    Attributes
    protected
  13. def emitSwitch(scrut: Global.Tree, scrutSym: Global.Symbol, cases: List[List[TreeMaker]], pt: Global.Type, matchFailGenOverride: Option[(Global.Tree) => Global.Tree], unchecked: Boolean): Option[Global.Tree]
  14. def emitTypeSwitch(bindersAndCases: List[(Global.Symbol, List[TreeMaker])], pt: Global.Type): Option[List[Global.CaseDef]]
  15. def ensuring(cond: (TreeMakers) => Boolean, msg: => Any): TreeMakers
    Implicit
    This member is added by an implicit conversion from TreeMakers toEnsuring[TreeMakers] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  16. def ensuring(cond: (TreeMakers) => Boolean): TreeMakers
    Implicit
    This member is added by an implicit conversion from TreeMakers toEnsuring[TreeMakers] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  17. def ensuring(cond: Boolean, msg: => Any): TreeMakers
    Implicit
    This member is added by an implicit conversion from TreeMakers toEnsuring[TreeMakers] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  18. def ensuring(cond: Boolean): TreeMakers
    Implicit
    This member is added by an implicit conversion from TreeMakers toEnsuring[TreeMakers] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  19. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  20. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  21. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  22. def fixerUpper(origOwner: Global.Symbol, pos: Global.Position): Global.InternalTraverser
    Attributes
    protected
  23. def freshName(prefix: String): Global.TermName
    Definition Classes
    CodegenCore
  24. def freshSym(pos: Global.Position, tp: Global.Type = NoType, prefix: String = "x"): Global.TermSymbol
    Definition Classes
    CodegenCore
  25. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  26. def getSuppression(scrut: Global.Tree): Suppression
  27. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  28. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  29. val matchOwner: Global.Symbol
    Definition Classes
    MatchMonadInterface
  30. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  31. def newSynthCaseLabel(name: String): Global.MethodSymbol
    Definition Classes
    CodegenCore
  32. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  33. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  34. def propagateSubstitution(treeMakers: List[TreeMaker], initial: Substitution): List[TreeMaker]
  35. def removeDummy(makers: List[TreeMaker]): collection.immutable.List[TreeMaker]
  36. def removeSubstOnly(makers: List[TreeMaker]): collection.immutable.List[TreeMaker]
  37. def reportMissingCases(pos: Global.Position, counterExamples: List[String]): Unit
    Definition Classes
    MatchMonadInterface
  38. def reportUnreachable(pos: Global.Position): Unit
    Definition Classes
    MatchMonadInterface
  39. def requiresSwitch(scrut: Global.Tree, cases: List[List[TreeMaker]]): Boolean
  40. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  41. def toString(): String
    Definition Classes
    AnyRef → Any
  42. def unreachableTypeSwitchCase(cases: List[Global.CaseDef]): Option[Global.CaseDef]
  43. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  44. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  45. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  46. case object DummyTreeMaker extends TreeMaker with NoNewBinders with Product with Serializable

    A dummy tree maker used to mark wildcard patterns.

    A dummy tree maker used to mark wildcard patterns. This is later used to back off from exhaustivity checking.

  47. object TypeTestTreeMaker extends java.io.Serializable

Deprecated Value Members

  1. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from TreeMakers toStringFormat[TreeMakers] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  2. def [B](y: B): (TreeMakers, B)
    Implicit
    This member is added by an implicit conversion from TreeMakers toArrowAssoc[TreeMakers] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromTreeMakers to any2stringadd[TreeMakers]

Inherited by implicit conversion StringFormat fromTreeMakers to StringFormat[TreeMakers]

Inherited by implicit conversion Ensuring fromTreeMakers to Ensuring[TreeMakers]

Inherited by implicit conversion ArrowAssoc fromTreeMakers to ArrowAssoc[TreeMakers]

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