proguard.evaluation

Class BasicBranchUnit

java.lang.Object

proguard.evaluation.BasicBranchUnit

All Implemented Interfaces:

BranchUnit

public class BasicBranchUnit
extends Object
implements BranchUnit

This BranchUnit remembers the branch unit commands that are invoked on it. I doesn't consider conditions when branching.

Author:

Eric Lafortune

Constructor Summary

Constructors

Constructor and Description
BasicBranchUnit()

Method Summary

Modifier and Type	Method and Description
void	branch(Clazz clazz, CodeAttribute codeAttribute, int offset, int branchTarget) Sets the new instruction offset.
void	branchConditionally(Clazz clazz, CodeAttribute codeAttribute, int offset, int branchTarget, int conditional) Sets the new instruction offset, depending on the certainty of the conditional branch.
InstructionOffsetValue	getTraceBranchTargets()
void	resetCalled() Resets the flag that tells whether any of the branch unit commands was called.
void	returnFromMethod() Returns from the method with the given value.
protected void	setCalled() Sets the flag that tells whether any of the branch unit commands was called.
void	setTraceBranchTargets(InstructionOffsetValue branchTargets) Sets the initial branch targets, which will be updated as the branch methods of the branch unit are called.
void	throwException() Handles the throwing of an exception.
boolean	wasCalled() Returns whether any of the branch unit commands was called.

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicBranchUnit

public BasicBranchUnit()

Method Detail

resetCalled

public void resetCalled()

Resets the flag that tells whether any of the branch unit commands was called.

setCalled

protected void setCalled()

Sets the flag that tells whether any of the branch unit commands was called.

wasCalled

public boolean wasCalled()

Returns whether any of the branch unit commands was called.

setTraceBranchTargets

public void setTraceBranchTargets(InstructionOffsetValue branchTargets)

Sets the initial branch targets, which will be updated as the branch methods of the branch unit are called.

getTraceBranchTargets

public InstructionOffsetValue getTraceBranchTargets()

branch

public void branch(Clazz clazz,
                   CodeAttribute codeAttribute,
                   int offset,
                   int branchTarget)

Description copied from interface: BranchUnit

Sets the new instruction offset.

Specified by:

branch in interface BranchUnit

branchConditionally

public void branchConditionally(Clazz clazz,
                                CodeAttribute codeAttribute,
                                int offset,
                                int branchTarget,
                                int conditional)

Description copied from interface: BranchUnit

Sets the new instruction offset, depending on the certainty of the conditional branch.

Specified by:

branchConditionally in interface BranchUnit

returnFromMethod

public void returnFromMethod()

Description copied from interface: BranchUnit

Returns from the method with the given value.

Specified by:

returnFromMethod in interface BranchUnit

throwException

public void throwException()

Description copied from interface: BranchUnit

Handles the throwing of an exception.

Specified by:

throwException in interface BranchUnit