abc.weaving.aspectinfo
Class ThisType

java.lang.Object
  abc.weaving.aspectinfo.Syntax
      abc.weaving.aspectinfo.Pointcut
          abc.weaving.aspectinfo.DynamicValuePointcut
              abc.weaving.aspectinfo.ThisAny
                  abc.weaving.aspectinfo.ThisType

public class ThisType
extends ThisAny

Handler for this condition pointcut with a type argument.

Author:

Aske Simon Christensen, Ganesh Sittampalam, Damien Sereni

Nested Class Summary

Nested classes/interfaces inherited from class abc.weaving.aspectinfo.Pointcut

Pointcut.DNF

Constructor Summary

ThisType(AbcType type, Position pos)

Method Summary

AbcType	getType() Get the type that is matched against this by this this pointcut.
protected Residue	matchesAt(WeavingEnv we, ContextValue cv)
java.lang.String	toString() Subclasses must define toString, for debugging purposes
boolean	unify(Pointcut otherpc, Unification unification) Attempt to unify two pointcuts. pc.unify(pc', unification) should return true if the pointcuts can be unified, and set the renamings appropriately in unification.

Methods inherited from class abc.weaving.aspectinfo.ThisAny

getFreeVars, matchesAt, registerSetupAdvice

Methods inherited from class abc.weaving.aspectinfo.DynamicValuePointcut

inline

Methods inherited from class abc.weaving.aspectinfo.Pointcut

dnf, freshVar, normalize

Methods inherited from class abc.weaving.aspectinfo.Syntax

getPosition

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ThisType

public ThisType(AbcType type,
                Position pos)

Method Detail

getType

public AbcType getType()

Get the type that is matched against this by this this pointcut.

toString

public java.lang.String toString()

Description copied from class: Pointcut

Subclasses must define toString, for debugging purposes

Overrides:

toString in class ThisAny

matchesAt

protected Residue matchesAt(WeavingEnv we,
                            ContextValue cv)

Overrides:

matchesAt in class ThisAny

unify

public boolean unify(Pointcut otherpc,
                     Unification unification)

Description copied from class: Pointcut

Attempt to unify two pointcuts. pc.unify(pc', unification) should return true if the pointcuts can be unified, and set the renamings appropriately in unification. There are two cases for unification: if unification.unifyWithFirst() is true, then the unification should only succeed if this pc can be renamed to pc', with the unification pointcut equal to this. Otherwise, the unification pointcut can be anything, as long as it can be renamed both to this and pc'.

A default implementation is provided, but all subclasses should override this - otherwise cflow CSE will be disabled for cflow that use these pointcuts.

Typical implementations for pointcuts that introduce no free variables are straightforward (see the And pointcut, for example). For pointcuts that introduce free variables, the Var.unify method is used to actually update the renamings (see the Args pointcut).

Overrides:

unify in class ThisAny

Parameters:

otherpc - the pointcut that should be unify with this

unification - the Unification that should be set.

Returns:

true iff the unification is succesful. If true is returned, then Unification.setPointcut(the unified pointcut) must have been called in the body of unify().

See Also:

AndPointcut.unify example, Var.unify, Unification