soot.shimple.toolkits.scalar
Class ShimpleLocalDefs
java.lang.Object
|
+--soot.shimple.toolkits.scalar.ShimpleLocalDefs
- public class ShimpleLocalDefs
- extends java.lang.Object
- implements LocalDefs
This class implements the LocalDefs interface for Shimple.
ShimpleLocalDefs can be used in conjunction with SimpleLocalUses to
provide Definition/Use and Use/Definition chains in SSA.
This implementation can be considered a small demo for how SSA
can be put to good use since it is much simpler than
soot.toolkits.scalar.SimpleLocalDefs. Shimple can often be treated
as Jimple with the added benefits of SSA assumptions.
In addition to the interface required by LocalDefs,
ShimpleLocalDefs also provides a method for obtaining the
definition Unit given only the Local.
- See Also:
ShimpleLocalUses
,
SimpleLocalDefs
,
SimpleLocalUses
Method Summary |
java.util.List |
getDefsOf(Local l)
Unconditionally returns the definition site of a local (as a
singleton list). |
java.util.List |
getDefsOfAt(Local l,
Unit s)
Returns the definition site for a Local at a certain point
(Unit) in a method as a singleton list. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
localToDefs
protected java.util.Map localToDefs
ShimpleLocalDefs
public ShimpleLocalDefs(ShimpleBody sb)
- Build a LocalDefs interface from a ShimpleBody. Proper SSA
form is required, otherwise correct behaviour is not
guaranteed.
getDefsOf
public java.util.List getDefsOf(Local l)
- Unconditionally returns the definition site of a local (as a
singleton list).
This method is currently not required by the LocalDefs
interface.
getDefsOfAt
public java.util.List getDefsOfAt(Local l,
Unit s)
- Returns the definition site for a Local at a certain point
(Unit) in a method as a singleton list.
- Specified by:
- getDefsOfAt in interface LocalDefs
- Parameters:
l
- the Local in question.s
- a unit that specifies the method context (location) to
query for the definitions of the Local.- Returns:
- a singleton list containing the definition site.