Packages

c

de.unruh.isabelle.mlvalue

FunctionConverter

final class FunctionConverter[D, R] extends Converter[(D) ⇒ R]

MLValue.Converter for type D => R.

  • ML type: d -> r (if d,r are the ML types corresponding to D,R).
  • Encoding of a function f as an exception: E_Function (DObject o val2exnR o f o exn2valD o (fn DObject e => e)) where exn2valD is a function that converts an exception back to a value of type d, and val2exnR is a function that converts a value of type r to an exception (as specified by the converters for types d,r).

Note that store is not supported by this converter. That means that MLValue(f) for a Scala function f will fail (since a Scala function cannot be transferred to the Isabelle process). However, retrieve works, thus mlF.retrieveNow for mlF : MLValue[D=>R] will return a function (that calls back to the Isabelle process whenever executed). But the preferred way to invoke mlF is to convert it into an MLFunction by mlF.function and invoke the resulting MLFunction. Another way to generate an MLValue[D=>R] is using MLValue.compileFunction to compile the function from ML source code.

While the existence of this conversion makes it possible to use functions as arguments to other functions (and thus do arbitrary higher order computations), we suspect that the presence of nested conversions (the composition with val2exnR and exn2valD above) can make this slow in more complex cases. (We have not benchmarked this, though.)

Annotations
@inline()
Source
FunctionConverter.scala
See also

MLValue.Converter for explanations what Converters are for.

Linear Supertypes
Converter[(D) ⇒ R], AnyRef, Any
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  1. FunctionConverter
  2. Converter
  3. AnyRef
  4. Any
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Instance Constructors

  1. new FunctionConverter()(implicit converterD: Converter[D], converterR: Converter[R])

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native() @HotSpotIntrinsicCandidate()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  8. def exnToValue(implicit isabelle: Isabelle, ec: ExecutionContext): String

    Returns ML code for an (anonymous) function of type exn -> a that converts a value encoded as an exception back into the original value.

    Returns ML code for an (anonymous) function of type exn -> a that converts a value encoded as an exception back into the original value.

    It is recommended that this function produces informative match failures in case of invalid inputs. MLValue.matchFailExn is a helper function that facilitates this.

    This function should always return the same value, at least for the same isabelle.

    Definition Classes
    FunctionConverter → Converter
  9. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  10. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  11. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  12. def mlType(implicit isabelle: Isabelle, ec: ExecutionContext): String

    Returns the ML type corresponding to A.

    Returns the ML type corresponding to A.

    This function should always return the same value, at least for the same isabelle.

    Definition Classes
    FunctionConverter → Converter
  13. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  15. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  16. def retrieve(value: MLValue[(D) ⇒ R])(implicit isabelle: Isabelle, ec: ExecutionContext): Future[(D) ⇒ R]

    Given an mlvalue.MLValue value, retrieves and returns the value referenced by value in the Isabelle object store.

    Given an mlvalue.MLValue value, retrieves and returns the value referenced by value in the Isabelle object store.

    Must not invoke value.retrieve or value.retrieveNow because those functions invoke this.retrieve. (But calling retrieve or retrieveNow on other MLValues is allowed as long as no cyclic dependencies are created.)

    Definition Classes
    FunctionConverter → Converter
  17. def store(value: (D) ⇒ R)(implicit isabelle: Isabelle, ec: ExecutionContext): MLValue[(D) ⇒ R]

    Given a value : A, transfers and stores value in the Isabelle object store and returns an mlvalue.MLValue referencing the value in the object store.

    Given a value : A, transfers and stores value in the Isabelle object store and returns an mlvalue.MLValue referencing the value in the object store.

    Must not invoke MLValue(value) because that functions invokes this.store. (But calling MLValue(...) on other values is allowed as long as no cyclic dependencies are created.)

    Definition Classes
    FunctionConverter → Converter
  18. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  19. def toString(): String
    Definition Classes
    AnyRef → Any
  20. def valueToExn(implicit isabelle: Isabelle, ec: ExecutionContext): String

    Returns ML code for an (anonymous) function of type a -> exn that converts a value into its encoding as an exception.

    Returns ML code for an (anonymous) function of type a -> exn that converts a value into its encoding as an exception.

    It is recommended that this function produces informative match failures in case of invalid inputs. MLValue.matchFailExn is a helper function that facilitates this.

    This function should always return the same value, at least for the same isabelle.

    Definition Classes
    FunctionConverter → Converter
  21. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  22. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  23. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] ) @Deprecated
    Deprecated

Inherited from Converter[(D) ⇒ R]

Inherited from AnyRef

Inherited from Any

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