soot.toolkits.scalar

Class SimpleLocalUses

java.lang.Object

soot.toolkits.scalar.SimpleLocalUses

All Implemented Interfaces:

LocalUses

public class SimpleLocalUses
extends java.lang.Object
implements LocalUses

Analysis that implements the LocalUses interface. Uses for a Local defined at a given Unit are returned as a list of UnitValueBoxPairs each containing a Unit that use the local and the Local itself wrapped in a ValueBox.

Nested Class Summary

Nested classes/interfaces inherited from interface soot.toolkits.scalar.LocalUses

LocalUses.Factory

Constructor Summary

Constructors

Constructor and Description
SimpleLocalUses(Body body, LocalDefs localDefs) Construct the analysis from a method body and a LocalDefs interface.
SimpleLocalUses(UnitGraph graph, LocalDefs localDefs) Construct the analysis from a UnitGraph representation of a method body and a LocalDefs interface.

Method Summary

Modifier and Type	Method and Description
java.util.Set<Local>	getUnusedVariables() Gets all variables that are not used in this body
java.util.Set<Local>	getUsedVariables() Gets all variables that are used in this body
java.util.List<UnitValueBoxPair>	getUsesOf(Unit s) Uses for a Local defined at a given Unit are returned as a list of UnitValueBoxPairs each containing a Unit that use the local and the Local itself wrapped in a ValueBox.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleLocalUses

public SimpleLocalUses(UnitGraph graph,
                       LocalDefs localDefs)

Construct the analysis from a UnitGraph representation of a method body and a LocalDefs interface. This supposes that a LocalDefs analysis must have been computed prior.

Note: If you do not already have a UnitGraph, it may be cheaper to use the constructor which only requires a Body.

SimpleLocalUses

public SimpleLocalUses(Body body,
                       LocalDefs localDefs)

Construct the analysis from a method body and a LocalDefs interface. This supposes that a LocalDefs analysis must have been computed prior.

Method Detail

getUsesOf

public java.util.List<UnitValueBoxPair> getUsesOf(Unit s)

Uses for a Local defined at a given Unit are returned as a list of UnitValueBoxPairs each containing a Unit that use the local and the Local itself wrapped in a ValueBox.

Specified by:

getUsesOf in interface LocalUses

Parameters:

s - a unit that we want to query for the uses of the Local it (may) define.

Returns:

a UnitValueBoxPair of the Units that use the Local.

getUsedVariables

public java.util.Set<Local> getUsedVariables()

Gets all variables that are used in this body

Returns:

The list of variables used in this body

getUnusedVariables

public java.util.Set<Local> getUnusedVariables()

Gets all variables that are not used in this body

Returns:

The list of variables declared, but not used in this body