Package com.oracle.truffle.api.utilities

Class UnionAssumption

java.lang.Object
com.oracle.truffle.api.utilities.UnionAssumption
All Implemented Interfaces:
Assumption
public class UnionAssumption extends Object implements Assumption
An assumption that combines two other assumptions. A check on this assumption checks both of the child assumptions.

  • Constructor Details

  • Method Details

    • check

      public void check() throws InvalidAssumptionException
      Description copied from interface: Assumption
      Checks that this assumption is still valid. The method throws an exception, if this is no longer the case. This method is preferred over the Assumption.isValid() method when writing guest language interpreter code. The catch block should perform a node rewrite (see Node.replace(Node)) with a node that no longer relies on the assumption.
      Specified by:
      check in interface Assumption
      Throws:
      InvalidAssumptionException - If the assumption is no longer valid.

    • invalidate

      public void invalidate()
      Description copied from interface: Assumption
      Invalidates this assumption. Performs no operation, if the assumption is already invalid.
      Specified by:
      invalidate in interface Assumption

    • getName

      public String getName()
      Description copied from interface: Assumption
      A name for the assumption that is used for debug output.
      Specified by:
      getName in interface Assumption
      Returns:
      the name of the assumption

    • isValid

      public boolean isValid()
      Description copied from interface: Assumption
      Checks whether the assumption is still valid.
      Specified by:
      isValid in interface Assumption
      Returns:
      a boolean value indicating the validity of the assumption