AbstractTrap (Soot - a J*va Optimization Framework 4.2.1 API)

java.lang.Object
- soot.AbstractTrap

All Implemented Interfaces:

Serializable, Trap, UnitBoxOwner

Direct Known Subclasses:

BTrap, GTrap, JTrap
```
public class AbstractTrap
extends Object
implements Trap, Serializable
```
Partial implementation of trap (exception catcher), used within Body classes.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected UnitBox`	`beginUnitBox` The first unit being trapped.
`protected UnitBox`	`endUnitBox` The unit just before the last unit being trapped.
`protected SootClass`	`exception` The exception being caught.
`protected UnitBox`	`handlerUnitBox` The unit to which execution flows after the caught exception is triggered.
`protected List<UnitBox>`	`unitBoxes` The list of unitBoxes referred to in this Trap (begin, end and handler.

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`AbstractTrap(SootClass exception, UnitBox beginUnitBox, UnitBox endUnitBox, UnitBox handlerUnitBox)` Creates an AbstractTrap with the given exception, handler, begin and end units.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`clearUnitBoxes()`
`Object`	`clone()` Performs a shallow clone of this trap.
`Unit`	`getBeginUnit()` Returns the first trapped unit, unless this `Trap` does not trap any units at all.
`UnitBox`	`getBeginUnitBox()` Returns the box holding the unit returned by `Trap.getBeginUnit()`.
`Unit`	`getEndUnit()` Returns the unit following the last trapped unit (that is, the first succeeding untrapped unit in the underlying `Chain`), unless this `Trap` does not trap any units at all.
`UnitBox`	`getEndUnitBox()` Returns the box holding the unit returned by `Trap.getEndUnit()`.
`SootClass`	`getException()` Returns the exception being caught.
`Unit`	`getHandlerUnit()` Returns the unit handling the exception being trapped.
`UnitBox`	`getHandlerUnitBox()` Returns the box holding the exception handler's unit.
`List<UnitBox>`	`getUnitBoxes()` Returns the boxes for first, last and handler units.
`void`	`setBeginUnit(Unit beginUnit)` Sets the value to be returned by `Trap.getBeginUnit()` to `beginUnit`.
`void`	`setEndUnit(Unit endUnit)` Sets the value to be returned by `Trap.getEndUnit()` to `endUnit`.
`void`	`setException(SootClass exception)` Sets the exception being caught to `exception`.
`void`	`setHandlerUnit(Unit handlerUnit)` Sets the unit handling the exception to `handlerUnit`.

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - exception
```
protected transient SootClass exception
```
    The exception being caught.
  - beginUnitBox
```
protected UnitBox beginUnitBox
```
    The first unit being trapped.
  - endUnitBox
```
protected UnitBox endUnitBox
```
    The unit just before the last unit being trapped.
  - handlerUnitBox
```
protected UnitBox handlerUnitBox
```
    The unit to which execution flows after the caught exception is triggered.
  - unitBoxes
```
protected List<UnitBox> unitBoxes
```
    The list of unitBoxes referred to in this Trap (begin, end and handler.
- Constructor Detail
  - AbstractTrap
```
protected AbstractTrap(SootClass exception,
                       UnitBox beginUnitBox,
                       UnitBox endUnitBox,
                       UnitBox handlerUnitBox)
```
    Creates an AbstractTrap with the given exception, handler, begin and end units.
- Method Detail
  - getBeginUnit
```
public Unit getBeginUnit()
```
    Description copied from interface: Trap
    
    Returns the first trapped unit, unless this Trap does not trap any units at all.
    
    If this is a degenerate Trap which traps no units (which can occur if all the units originally trapped by the exception handler have been optimized away), returns an untrapped unit. The returned unit will likely be the first unit remaining after the point where the trapped units were once located, but the only guarantee provided is that for such an empty trap, getBeginUnit() will return the same value as Trap.getEndUnit().
    
    Specified by:
    
    getBeginUnit in interface Trap
  - getEndUnit
```
public Unit getEndUnit()
```
    Description copied from interface: Trap
    
    Returns the unit following the last trapped unit (that is, the first succeeding untrapped unit in the underlying Chain), unless this Trap does not trap any units at all.
    
    In the case of a degenerate Trap which traps no units, returns the same untrapped unit as getBeginUnit()
    
    Note that a weakness of marking the end of the trapped region with the first untrapped unit is that Soot has no good mechanism for describing a Trap which traps the last unit in a method.
    
    Specified by:
    
    getEndUnit in interface Trap
  - getHandlerUnit
```
public Unit getHandlerUnit()
```
    Description copied from interface: Trap
    
    Returns the unit handling the exception being trapped.
    
    Specified by:
    
    getHandlerUnit in interface Trap
  - getHandlerUnitBox
```
public UnitBox getHandlerUnitBox()
```
    Description copied from interface: Trap
    
    Returns the box holding the exception handler's unit.
    
    Specified by:
    
    getHandlerUnitBox in interface Trap
  - getBeginUnitBox
```
public UnitBox getBeginUnitBox()
```
    Description copied from interface: Trap
    
    Returns the box holding the unit returned by Trap.getBeginUnit().
    
    Specified by:
    
    getBeginUnitBox in interface Trap
  - getEndUnitBox
```
public UnitBox getEndUnitBox()
```
    Description copied from interface: Trap
    
    Returns the box holding the unit returned by Trap.getEndUnit().
    
    Specified by:
    
    getEndUnitBox in interface Trap
  - getUnitBoxes
```
public List<UnitBox> getUnitBoxes()
```
    Description copied from interface: Trap
    
    Returns the boxes for first, last and handler units.
    
    Specified by:
    
    getUnitBoxes in interface Trap
    
    Specified by:
    
    getUnitBoxes in interface UnitBoxOwner
  - clearUnitBoxes
```
public void clearUnitBoxes()
```
    Specified by:
    
    clearUnitBoxes in interface UnitBoxOwner
  - getException
```
public SootClass getException()
```
    Description copied from interface: Trap
    
    Returns the exception being caught.
    
    Specified by:
    
    getException in interface Trap
  - setBeginUnit
```
public void setBeginUnit(Unit beginUnit)
```
    Description copied from interface: Trap
    
    Sets the value to be returned by Trap.getBeginUnit() to beginUnit.
    
    Specified by:
    
    setBeginUnit in interface Trap
  - setEndUnit
```
public void setEndUnit(Unit endUnit)
```
    Description copied from interface: Trap
    
    Sets the value to be returned by Trap.getEndUnit() to endUnit.
    
    Specified by:
    
    setEndUnit in interface Trap
  - setHandlerUnit
```
public void setHandlerUnit(Unit handlerUnit)
```
    Description copied from interface: Trap
    
    Sets the unit handling the exception to handlerUnit.
    
    Specified by:
    
    setHandlerUnit in interface Trap
  - setException
```
public void setException(SootClass exception)
```
    Description copied from interface: Trap
    
    Sets the exception being caught to exception.
    
    Specified by:
    
    setException in interface Trap
  - clone
```
public Object clone()
```
    Description copied from interface: Trap
    
    Performs a shallow clone of this trap.
    
    Specified by:
    
    clone in interface Trap
    
    Overrides:
    
    clone in class Object

Class AbstractTrap

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

exception

beginUnitBox

endUnitBox

handlerUnitBox

unitBoxes

Constructor Detail

AbstractTrap

Method Detail

getBeginUnit

getEndUnit

getHandlerUnit

getHandlerUnitBox

getBeginUnitBox

getEndUnitBox

getUnitBoxes

clearUnitBoxes

getException

setBeginUnit

setEndUnit

setHandlerUnit

setException

clone