scala.tools.nsc.backend.icode.GenICode.ICodePhase

DuplicateLabels

class DuplicateLabels extends Global.Transformer

Tree transformer that duplicates code and at the same time creates fresh symbols for existing labels. Since labels may be used before they are defined (forward jumps), all labels found are mapped to fresh symbols. References to the same label (use or definition) will remain consistent after this transformation (both the use and the definition of some label l will be mapped to the same label l').

Note: If the tree fragment passed to the duplicator contains unbound label names, the bind to the outer labeldef will be lost! That's because a use of an unbound label l will be transformed to l', and the corresponding label def, being outside the scope of this transformation, will not be updated.

All LabelDefs are entered into the context label map, since it makes no sense to delay it any more: they will be used at some point.

Source
GenICode.scala
Linear Supertypes
Global.Transformer, Global.Transformer, AnyRef, Any
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Inherited
  1. DuplicateLabels
  2. Transformer
  3. Transformer
  4. AnyRef
  5. Any
Implicitly
  1. by any2stringadd
  2. by any2stringfmt
  3. by any2ArrowAssoc
  4. by any2Ensuring
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Instance Constructors

  1. new DuplicateLabels(boundLabels: Set[Global.Symbol])

Value Members

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

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. def +(other: String): String

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

  5. def ->[B](y: B): (DuplicateLabels, B)

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to ArrowAssoc[DuplicateLabels] performed by method any2ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()

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

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  8. def apply(ctx: Context, t: Global.Tree): Global.Tree

  9. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  10. def atOwner[A](owner: Global.Symbol)(trans: ⇒ A): A

    Definition Classes
    Transformer

  11. def clone(): AnyRef

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

  12. var ctx: Context

  13. def currentClass: Global.Symbol

    Attributes
    protected
    Definition Classes
    Transformer

  14. def currentMethod: Global.Symbol

    Attributes
    protected
    Definition Classes
    Transformer

  15. var currentOwner: Global.Symbol

    Attributes
    protected[scala]
    Definition Classes
    Transformer

  16. def ensuring(cond: (DuplicateLabels) ⇒ Boolean, msg: ⇒ Any): DuplicateLabels

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to Ensuring[DuplicateLabels] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  17. def ensuring(cond: (DuplicateLabels) ⇒ Boolean): DuplicateLabels

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to Ensuring[DuplicateLabels] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  18. def ensuring(cond: Boolean, msg: ⇒ Any): DuplicateLabels

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to Ensuring[DuplicateLabels] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  19. def ensuring(cond: Boolean): DuplicateLabels

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to Ensuring[DuplicateLabels] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring

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

    Definition Classes
    AnyRef

  21. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  22. def finalize(): Unit

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

  23. def formatted(fmtstr: String): String

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to StringFormat performed by method any2stringfmt in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()

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

    Definition Classes
    AnyRef → Any

  25. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  26. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  27. val labels: HashMap[Global.Symbol, Global.Symbol]

  28. var method: Global.Symbol

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

    Definition Classes
    AnyRef

  30. final def notify(): Unit

    Definition Classes
    AnyRef

  31. final def notifyAll(): Unit

    Definition Classes
    AnyRef

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

    Definition Classes
    AnyRef

  33. def toString(): String

    Definition Classes
    AnyRef → Any

  34. def transform(t: Global.Tree): Global.Tree

    Definition Classes
    DuplicateLabels → Transformer

  35. def transformCaseDefs(trees: List[Global.CaseDef]): List[Global.CaseDef]

    Definition Classes
    Transformer

  36. def transformIdents(trees: List[Global.Ident]): List[Global.Ident]

    Definition Classes
    Transformer

  37. def transformModifiers(mods: Global.Modifiers): Global.Modifiers

    Definition Classes
    Transformer

  38. def transformStats(stats: List[Global.Tree], exprOwner: Global.Symbol): List[Global.Tree]

    Definition Classes
    Transformer

  39. def transformTemplate(tree: Global.Template): Global.Template

    Definition Classes
    Transformer

  40. def transformTrees(trees: List[Global.Tree]): List[Global.Tree]

    Definition Classes
    Transformer

  41. def transformTypeDefs(trees: List[Global.TypeDef]): List[Global.TypeDef]

    Definition Classes
    Transformer

  42. def transformUnit(unit: Global.CompilationUnit): Unit

    Definition Classes
    Transformer

  43. def transformValDef(tree: Global.ValDef): Global.ValDef

    Definition Classes
    Transformer

  44. def transformValDefs(trees: List[Global.ValDef]): List[Global.ValDef]

    Definition Classes
    Transformer

  45. def transformValDefss(treess: List[List[Global.ValDef]]): List[List[Global.ValDef]]

    Definition Classes
    Transformer

  46. val treeCopy: Global.TreeCopier

    Definition Classes
    Transformer

  47. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()

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

    Definition Classes
    AnyRef
    Annotations
    @throws()

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

    Definition Classes
    AnyRef
    Annotations
    @throws()

  50. def →[B](y: B): (DuplicateLabels, B)

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to ArrowAssoc[DuplicateLabels] performed by method any2ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Shadowed Implict Value Members

  1. val self: Any

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to StringAdd performed by method any2stringadd in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (duplicateLabels: StringAdd).self
    Definition Classes
    StringAdd

  2. val self: Any

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to StringFormat performed by method any2stringfmt in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (duplicateLabels: StringFormat).self
    Definition Classes
    StringFormat

Deprecated Value Members

  1. def x: DuplicateLabels

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to ArrowAssoc[DuplicateLabels] performed by method any2ArrowAssoc in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (duplicateLabels: ArrowAssoc[DuplicateLabels]).x
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use leftOfArrow instead

  2. def x: DuplicateLabels

    Implicit information
    This member is added by an implicit conversion from DuplicateLabels to Ensuring[DuplicateLabels] performed by method any2Ensuring in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (duplicateLabels: Ensuring[DuplicateLabels]).x
    Definition Classes
    Ensuring
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use resultOfEnsuring instead

Inherited from Global.Transformer

Inherited from Global.Transformer

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from DuplicateLabels to StringAdd

Inherited by implicit conversion any2stringfmt from DuplicateLabels to StringFormat

Inherited by implicit conversion any2ArrowAssoc from DuplicateLabels to ArrowAssoc[DuplicateLabels]

Inherited by implicit conversion any2Ensuring from DuplicateLabels to Ensuring[DuplicateLabels]

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