org.kiama.attribution.AttributionBase

CircularAttribute

class CircularAttribute [T <: AnyRef, U] extends (T) ⇒ U

An attribute of a node type T with value of type U which has a circular definition. The value of the attribute is computed by the function f which may itself use the value of the attribute. init specifies an initial value for the attribute. The attribute (and any circular attributes on which it depends) are evaluated until no value changes (i.e., a fixed point is reached). The final result is memoised so that subsequent evaluations return the same value.

This code implements the basic circular evaluation algorithm from "Circular Reference Attributed Grammars - their Evaluation and Applications", by Magnusson and Hedin from LDTA 2003.

Source
Attribution.scala
Linear Supertypes
(T) ⇒ U, AnyRef, Any
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  1. CircularAttribute
  2. Function1
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Visibility
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Instance Constructors

  1. new CircularAttribute (init: U, f: (T) ⇒ U)

Value Members

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

    Attributes
    final
    Definition Classes
    AnyRef

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

    Attributes
    final
    Definition Classes
    Any

  3. def ## (): Int

    Attributes
    final
    Definition Classes
    AnyRef → Any

  4. def == (arg0: AnyRef): Boolean

    Attributes
    final
    Definition Classes
    AnyRef

  5. def == (arg0: Any): Boolean

    Attributes
    final
    Definition Classes
    Any

  6. def andThen [A] (g: (U) ⇒ A): (T) ⇒ A

    Definition Classes
    Function1

  7. def apply (t: T): U

    Return the value of this attribute for node t.

    Return the value of this attribute for node t. Essentially Figure 6 from the CRAG paper.

    Definition Classes
    CircularAttribute → Function1

  8. def asInstanceOf [T0] : T0

    Attributes
    final
    Definition Classes
    Any

  9. def clone (): AnyRef

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

  10. def compose [A] (g: (A) ⇒ T): (A) ⇒ U

    Definition Classes
    Function1

  11. def eq (arg0: AnyRef): Boolean

    Attributes
    final
    Definition Classes
    AnyRef

  12. def equals (arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  13. def finalize (): Unit

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

  14. def getClass (): java.lang.Class[_]

    Attributes
    final
    Definition Classes
    AnyRef → Any

  15. def hashCode (): Int

    Definition Classes
    AnyRef → Any

  16. def isInstanceOf [T0] : Boolean

    Attributes
    final
    Definition Classes
    Any

  17. def ne (arg0: AnyRef): Boolean

    Attributes
    final
    Definition Classes
    AnyRef

  18. def notify (): Unit

    Attributes
    final
    Definition Classes
    AnyRef

  19. def notifyAll (): Unit

    Attributes
    final
    Definition Classes
    AnyRef

  20. def synchronized [T0] (arg0: ⇒ T0): T0

    Attributes
    final
    Definition Classes
    AnyRef

  21. def toString (): String

    Definition Classes
    Function1 → AnyRef → Any

  22. def wait (): Unit

    Attributes
    final
    Definition Classes
    AnyRef
    Annotations
    @throws()

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

    Attributes
    final
    Definition Classes
    AnyRef
    Annotations
    @throws()

  24. def wait (arg0: Long): Unit

    Attributes
    final
    Definition Classes
    AnyRef
    Annotations
    @throws()

Inherited from (T) ⇒ U

Inherited from AnyRef

Inherited from Any