Package convex.core.lang

Class AFn<T extends ACell>

java.lang.Object
convex.core.data.AObject
convex.core.data.ACell
convex.core.lang.AFn<T>
Type Parameters:
T - Return type of functions.
All Implemented Interfaces:
IValidated, IWriteable, IFn<T>
Direct Known Subclasses:
AClosure, ADataFn, CoreFn
public abstract class AFn<T extends ACell> extends ACell implements IFn<T>
Base class for functions expressed as values "You know what's web-scale? The Web. And you know what it is? Dynamically typed." - Stuart Halloway

  • Constructor Details

    • AFn

      public AFn()

  • Method Details

    • invoke

      public abstract Context<T> invoke​(Context<ACell> context, ACell[] args)
      Description copied from interface: IFn
      Invoke this function in the given context.
      Specified by:
      invoke in interface IFn<T extends ACell>
      Parameters:
      context - Context in which the function is to be executed
      args - Arguments to the function
      Returns:
      Context containing result of function invocation, or an exceptional value

    • updateRefs

      public abstract AFn<T> updateRefs​(IRefFunction func)
      Description copied from class: ACell
      Updates all Refs in this object using the given function. The function *must not* change the hash value of Refs, in order to ensure structural integrity of modified data structures. This is a building block for a very sneaky trick that enables use to do a lot of efficient operations on large trees of smart references. Must return the same object if no Refs are altered.
      Overrides:
      updateRefs in class ACell
      Parameters:
      func - Ref update function
      Returns:
      Cell with updated Refs

    • getType

      public final AType getType()
      Description copied from class: ACell
      Gets the most specific known runtime Type for this Cell.
      Overrides:
      getType in class ACell
      Returns:
      The Type of this Call

    • supportsArgs

      public boolean supportsArgs​(ACell[] args)
      Tests if this function supports the given argument list By default, checks if the function supports the given arity only. TODO: intention is to override this to include dynamic type checks etc.
      Parameters:
      args - Array of arguments
      Returns:
      true if function supports the specified args array

    • hasArity

      public abstract boolean hasArity​(int arity)
      Tests if this function supports the given arity.
      Parameters:
      arity - Arity to check
      Returns:
      true if function supports the given arity, false otherwise

    • isCVMValue

      public boolean isCVMValue()
      Description copied from class: ACell
      Returns true if this object represents a first class CVM Value. Sub-structural cells that are not themselves first class values should return false. CVM values might not be in a canonical format, e.g. temporary data structures
      Specified by:
      isCVMValue in class ACell
      Returns:
      true if the object is a CVM Value, false otherwise

    • getTag

      public byte getTag()
      Description copied from class: ACell
      Gets the tag byte for this cell. The tag byte is always written as the first byte of the Cell's Encoding
      Specified by:
      getTag in class ACell
      Returns:
      Tag byte for this Cell