scala.tools.nsc.transform.patmat.MatchApproximation

MatchApproximator

trait MatchApproximator extends TreeMakers with TreesAndTypesDomain

Represent a match as a formula in propositional logic that encodes whether the match matches (abstractly: we only consider types)

Linear Supertypes
MatchApproximation.TreesAndTypesDomain, MatchApproximation.CheckableTreeAndTypeAnalysis, MatchApproximation.PropositionalLogic, MatchApproximation.TreeMakers, MatchApproximation.CodegenCore, MatchApproximation.TypedSubstitution, MatchApproximation.MatchMonadInterface, AnyRef, Any
Known Subclasses
CommonSubconditionElimination, MatchAnalyzer, MatchOptimizer, OptimizingMatchTranslator
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Inherited
  1. MatchApproximator
  2. TreesAndTypesDomain
  3. CheckableTreeAndTypeAnalysis
  4. PropositionalLogic
  5. TreeMakers
  6. CodegenCore
  7. TypedSubstitution
  8. MatchMonadInterface
  9. AnyRef
  10. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Type Members

  1. trait AbsCodegen extends AnyRef

    Definition Classes
    CodegenCore

  2. trait AbsVar extends AnyRef

    Definition Classes
    PropositionalLogic

  3. case class AlternativesTreeMaker(prevBinder: Global.Symbol, altss: List[List[TreeMaker]], pos: Global.Position) extends TreeMaker with NoNewBinders with Product with Serializable

    Definition Classes
    TreeMakers

  4. case class And(a: Prop, b: Prop) extends Prop with Product with Serializable

    Definition Classes
    PropositionalLogic

  5. case class BodyTreeMaker(body: Global.Tree, matchPt: Global.Type) extends TreeMaker with NoNewBinders with Product with Serializable

    Definition Classes
    TreeMakers

  6. trait Casegen extends AbsCodegen

    Definition Classes
    CodegenCore

  7. abstract class CommonCodegen extends AbsCodegen

    Definition Classes
    CodegenCore

  8. sealed abstract class CondTreeMaker extends FunTreeMaker

    Definition Classes
    TreeMakers

  9. sealed abstract class Const extends AnyRef

    Definition Classes
    TreesAndTypesDomain

  10. case class Eq(p: Var, q: Const) extends Prop with Product with Serializable

    Definition Classes
    PropositionalLogic

  11. case class EqualityTestTreeMaker(prevBinder: Global.Symbol, patTree: Global.Tree, pos: Global.Position) extends CondTreeMaker with Product with Serializable

    Definition Classes
    TreeMakers

  12. case class ExtractorTreeMaker(extractor: Global.Tree, extraCond: Option[Global.Tree], nextBinder: Global.Symbol)(subPatBinders: List[Global.Symbol], subPatRefs: List[Global.Tree], 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).

  13. abstract type Formula

    Definition Classes
    PropositionalLogic

  14. abstract type FormulaBuilder

    Definition Classes
    PropositionalLogic

  15. sealed abstract class FunTreeMaker extends TreeMaker

    Definition Classes
    TreeMakers

  16. case class GuardTreeMaker(guardTree: Global.Tree) extends TreeMaker with NoNewBinders with Product with Serializable

    Definition Classes
    TreeMakers

  17. type Model = SortedMap[Sym, Boolean]

    Definition Classes
    PropositionalLogic

  18. sealed trait NoNewBinders extends TreeMaker

    Definition Classes
    TreeMakers

  19. case class Not(a: Prop) extends Prop with Product with Serializable

    Definition Classes
    PropositionalLogic

  20. case class Or(a: Prop, b: Prop) extends Prop with Product with Serializable

    Definition Classes
    PropositionalLogic

  21. sealed trait PreserveSubPatBinders extends TreeMaker

    Definition Classes
    TreeMakers

  22. case class ProductExtractorTreeMaker(prevBinder: Global.Symbol, extraCond: Option[Global.Tree])(subPatBinders: List[Global.Symbol], subPatRefs: List[Global.Tree], mutableBinders: List[Global.Symbol], binderKnownNonNull: Boolean, ignoredSubPatBinders: Set[Global.Symbol]) extends FunTreeMaker with PreserveSubPatBinders with Product with Serializable

    An optimized version of ExtractorTreeMaker for Products.

  23. class Prop extends AnyRef

    Definition Classes
    PropositionalLogic

  24. trait PropMap extends AnyRef

    Definition Classes
    PropositionalLogic

  25. trait PropTraverser extends AnyRef

    Definition Classes
    PropositionalLogic

  26. case class SubstOnlyTreeMaker(prevBinder: Global.Symbol, nextBinder: Global.Symbol) extends TreeMaker with Product with Serializable

    Definition Classes
    TreeMakers

  27. class Substitution extends AnyRef

    Definition Classes
    TypedSubstitution

  28. abstract case class Sym(variable: Var, const: Const) extends Prop with Product with Serializable

    Definition Classes
    PropositionalLogic

  29. case class Test(prop: MatchApproximator.Prop, treeMaker: MatchApproximator.TreeMaker) extends Product with Serializable

  30. type Tree = Global.Tree

    Definition Classes
    TreesAndTypesDomain → PropositionalLogic

  31. abstract class TreeMaker extends AnyRef

    Definition Classes
    TreeMakers

  32. class TreeMakersToProps extends AnyRef

  33. class TreeMakersToPropsIgnoreNullChecks extends TreeMakersToProps

  34. case class TrivialTreeMaker(tree: Global.Tree) extends TreeMaker with NoNewBinders with Product with Serializable

    Definition Classes
    TreeMakers

  35. type Type = Global.Type

    Definition Classes
    TreesAndTypesDomain → PropositionalLogic

  36. sealed class TypeConst extends Const

    Definition Classes
    TreesAndTypesDomain

  37. trait TypeConstExtractor extends AnyRef

    Definition Classes
    PropositionalLogic

  38. 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.

  39. class UniqueSym extends Sym

    Definition Classes
    PropositionalLogic

  40. sealed class ValueConst extends Const

    Definition Classes
    TreesAndTypesDomain

  41. trait ValueConstExtractor extends AnyRef

    Definition Classes
    PropositionalLogic

  42. class Var extends AbsVar

    Definition Classes
    TreesAndTypesDomain

  43. trait VarExtractor extends AnyRef

    Definition Classes
    PropositionalLogic

Abstract Value Members

  1. abstract val EmptyModel: Model

    Definition Classes
    PropositionalLogic

  2. abstract val NoModel: Model

    Definition Classes
    PropositionalLogic

  3. abstract def addFormula(buff: FormulaBuilder, f: Formula): Unit

    Definition Classes
    PropositionalLogic

  4. abstract def analyzeCases(prevBinder: Global.Symbol, cases: List[List[TreeMaker]], pt: Global.Type, suppression: MatchApproximation.Suppression): Unit

    Definition Classes
    TreeMakers

  5. abstract def andFormula(a: Formula, b: Formula): Formula

    Definition Classes
    PropositionalLogic

  6. abstract def cnfString(f: Formula): String

    Definition Classes
    PropositionalLogic

  7. abstract def codegen: AbsCodegen

    Definition Classes
    CodegenCore

  8. abstract def eqFreePropToSolvable(p: Prop): Formula

    Definition Classes
    PropositionalLogic

  9. abstract def findAllModelsFor(f: Formula): List[Model]

    Definition Classes
    PropositionalLogic

  10. abstract def findModelFor(f: Formula): Model

    Definition Classes
    PropositionalLogic

  11. abstract def formulaBuilder: FormulaBuilder

    Definition Classes
    PropositionalLogic

  12. abstract def optimizeCases(prevBinder: Global.Symbol, cases: List[List[TreeMaker]], pt: Global.Type): (List[List[TreeMaker]], List[Global.Tree])

    Definition Classes
    TreeMakers

  13. abstract def simplifyFormula(a: Formula): Formula

    Definition Classes
    PropositionalLogic

  14. abstract def toFormula(buff: FormulaBuilder): Formula

    Definition Classes
    PropositionalLogic

  15. abstract val typer: (analyzer)#Typer

    Definition Classes
    CheckableTreeAndTypeAnalysis

Concrete Value Members

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

    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

    Definition Classes
    AnyRef → Any

  3. def +(other: String): String

    Implicit information
    This member is added by an implicit conversion from MatchApproximator to any2stringadd[MatchApproximator] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd

  4. def ->[B](y: B): (MatchApproximator, B)

    Implicit information
    This member is added by an implicit conversion from MatchApproximator to ArrowAssoc[MatchApproximator] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()

  5. def /\(props: Iterable[Prop]): Prop

    Definition Classes
    PropositionalLogic

  6. final def ==(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  7. object AnalysisBudget

    Definition Classes
    PropositionalLogic

  8. object Const

    Definition Classes
    TreesAndTypesDomain

  9. object EmptySubstitution extends Substitution

    Definition Classes
    TypedSubstitution

  10. object False extends Prop with Product with Serializable

    Definition Classes
    PropositionalLogic

  11. object IrrefutableExtractorTreeMaker

    Definition Classes
    TreeMakers

  12. object NullConst extends Const with Product with Serializable

    Definition Classes
    TreesAndTypesDomain → PropositionalLogic

  13. object Substitution

    Definition Classes
    TypedSubstitution

  14. object Sym extends Serializable

    Definition Classes
    PropositionalLogic

  15. object Test extends Serializable

  16. object True extends Prop with Product with Serializable

    Definition Classes
    PropositionalLogic

  17. object TypeConst extends TypeConstExtractor

    Definition Classes
    TreesAndTypesDomain → PropositionalLogic

  18. object TypeTestTreeMaker extends Serializable

    Definition Classes
    TreeMakers

  19. object ValueConst extends ValueConstExtractor

    Definition Classes
    TreesAndTypesDomain → PropositionalLogic

  20. object Var extends VarExtractor

    Definition Classes
    TreesAndTypesDomain → PropositionalLogic

  21. def \/(props: Iterable[Prop]): Prop

    Definition Classes
    PropositionalLogic

  22. def approximateMatchConservative(root: Global.Symbol, cases: List[List[TreeMaker]]): List[List[Test]]

  23. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  24. final def caseWithoutBodyToProp(tests: List[Test]): Prop

    Attributes
    protected

  25. def checkableType(tp: Global.Type): Global.Type

    Definition Classes
    CheckableTreeAndTypeAnalysis

  26. def clone(): AnyRef

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

  27. def combineCases(scrut: Global.Tree, scrutSym: Global.Symbol, casesRaw: List[List[TreeMaker]], pt: Global.Type, owner: Global.Symbol, matchFailGenOverride: Option[(Global.Tree) ⇒ Global.Tree]): Global.Tree

    Definition Classes
    TreeMakers

  28. def combineCasesNoSubstOnly(scrut: Global.Tree, scrutSym: Global.Symbol, casesNoSubstOnly: List[List[TreeMaker]], pt: Global.Type, owner: Global.Symbol, matchFailGenOverride: Option[(Global.Tree) ⇒ Global.Tree]): Global.Tree

    Definition Classes
    TreeMakers

  29. def combineExtractors(treeMakers: List[TreeMaker])(casegen: Casegen): Global.Tree

    Definition Classes
    TreeMakers

  30. val debugInfoEmitVars: Boolean

    Attributes
    protected
    Definition Classes
    TreeMakers

  31. 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]

    Definition Classes
    TreeMakers

  32. def emitTypeSwitch(bindersAndCases: List[(Global.Symbol, List[TreeMaker])], pt: Global.Type): Option[List[Global.CaseDef]]

    Definition Classes
    TreeMakers

  33. def ensuring(cond: (MatchApproximator) ⇒ Boolean, msg: ⇒ Any): MatchApproximator

    Implicit information
    This member is added by an implicit conversion from MatchApproximator to Ensuring[MatchApproximator] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  34. def ensuring(cond: (MatchApproximator) ⇒ Boolean): MatchApproximator

    Implicit information
    This member is added by an implicit conversion from MatchApproximator to Ensuring[MatchApproximator] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  35. def ensuring(cond: Boolean, msg: ⇒ Any): MatchApproximator

    Implicit information
    This member is added by an implicit conversion from MatchApproximator to Ensuring[MatchApproximator] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  36. def ensuring(cond: Boolean): MatchApproximator

    Implicit information
    This member is added by an implicit conversion from MatchApproximator to Ensuring[MatchApproximator] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  37. def enumerateSubtypes(tp: Global.Type): Option[List[Global.Type]]

    Definition Classes
    CheckableTreeAndTypeAnalysis

  38. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  39. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  40. def finalize(): Unit

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

  41. def fixerUpper(origOwner: Global.Symbol, pos: Global.Position): Global.Traverser

    Attributes
    protected
    Definition Classes
    TreeMakers

  42. def formatted(fmtstr: String): String

    Implicit information
    This member is added by an implicit conversion from MatchApproximator to StringFormat[MatchApproximator] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()

  43. def freshName(prefix: String): Global.TermName

    Definition Classes
    CodegenCore

  44. def freshSym(pos: Global.Position, tp: Global.Type = NoType, prefix: String = "x"): Global.TermSymbol

    Definition Classes
    CodegenCore

  45. def gatherVariables(p: Prop): Set[Var]

    Definition Classes
    PropositionalLogic

  46. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any

  47. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  48. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  49. val matchOwner: Global.Symbol

    Definition Classes
    MatchMonadInterface

  50. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  51. def newSynthCaseLabel(name: String): Global.MethodSymbol

    Definition Classes
    CodegenCore

  52. final def notify(): Unit

    Definition Classes
    AnyRef

  53. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  54. def prepareNewAnalysis(): Unit

    Definition Classes
    TreesAndTypesDomain → PropositionalLogic

  55. def propToSolvable(p: Prop): Formula

    Definition Classes
    PropositionalLogic

  56. def propagateSubstitution(treeMakers: List[TreeMaker], initial: Substitution): List[TreeMaker]

    Definition Classes
    TreeMakers

  57. def pureType(tp: Global.Type): Global.Type

    Definition Classes
    MatchMonadInterface

  58. def removeSubstOnly(makers: List[TreeMaker]): collection.immutable.List[TreeMaker]

    Definition Classes
    TreeMakers

  59. def removeVarEq(props: List[Prop], modelNull: Boolean = false): (Formula, List[Formula])

    Definition Classes
    PropositionalLogic

  60. def reportMissingCases(pos: Global.Position, counterExamples: List[String]): Unit

    Definition Classes
    MatchMonadInterface

  61. def reportUnreachable(pos: Global.Position): Unit

    Definition Classes
    MatchMonadInterface

  62. def showTreeMakers(cases: List[List[TreeMaker]]): Unit

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

    Definition Classes
    AnyRef

  64. def toString(): String

    Definition Classes
    AnyRef → Any

  65. def uncheckableType(tp: Global.Type): Boolean

    Definition Classes
    CheckableTreeAndTypeAnalysis

  66. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  68. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  69. def →[B](y: B): (MatchApproximator, B)

    Implicit information
    This member is added by an implicit conversion from MatchApproximator to ArrowAssoc[MatchApproximator] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from MatchApproximation.TreesAndTypesDomain

Inherited from MatchApproximation.CheckableTreeAndTypeAnalysis

Inherited from MatchApproximation.PropositionalLogic

Inherited from MatchApproximation.TreeMakers

Inherited from MatchApproximation.CodegenCore

Inherited from MatchApproximation.TypedSubstitution

Inherited from MatchApproximation.MatchMonadInterface

Inherited from AnyRef

Inherited from Any

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

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

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

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

Ungrouped