Class BasicBlockInContext<T extends ISSABasicBlock>

java.lang.Object

com.ibm.wala.util.graph.impl.NodeWithNumber

com.ibm.wala.ipa.cfg.BasicBlockInContext<T>

All Implemented Interfaces:

IBasicBlock<SSAInstruction>, ISSABasicBlock, INodeWithNumber, Iterable<SSAInstruction>

public final class BasicBlockInContext<T extends ISSABasicBlock>
extends NodeWithNumber
implements ISSABasicBlock

A helper class to make the ipcfg work correctly with context-sensitive call graphs.

Constructor Summary

Constructors

Constructor	Description
BasicBlockInContext(CGNode node, T bb)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
Iterator<TypeReference>	getCaughtExceptionTypes()
T	getDelegate()
int	getFirstInstructionIndex()	Get the index of the first instruction in the basic block.
SSAInstruction	getLastInstruction()
int	getLastInstructionIndex()	Get the index of the last instruction in the basic block.
IMethod	getMethod()
CGNode	getNode()
int	getNumber()	Each basic block should have a unique number in its cfg
int	hashCode()
boolean	isCatchBlock()	Is this block a catch block
boolean	isEntryBlock()	Does this block represent the unique entry to a ControlFlowGraph
boolean	isExitBlock()	Does this block represent the unique exit from a ControlFlowGraph?
Iterator<SSAPhiInstruction>	iteratePhis()
Iterator<SSAPiInstruction>	iteratePis()
Iterator<SSAInstruction>	iterator()
String	toString()

Methods inherited from class NodeWithNumber

getGraphNodeId, setGraphNodeId

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface INodeWithNumber

getGraphNodeId, setGraphNodeId

Methods inherited from interface Iterable

forEach, spliterator

Constructor Details

BasicBlockInContext

public BasicBlockInContext(CGNode node,
 T bb)

Method Details

getFirstInstructionIndex

public int getFirstInstructionIndex()

Description copied from interface: IBasicBlock

Get the index of the first instruction in the basic block. The value is an index into the instruction array that contains all the instructions for the method.

If the result is < 0, the block has no instructions

Specified by:

getFirstInstructionIndex in interface IBasicBlock<T extends ISSABasicBlock>

Returns:

the instruction index for the first instruction in the basic block.

See Also:

• IBasicBlock.getFirstInstructionIndex()

getLastInstructionIndex

public int getLastInstructionIndex()

Description copied from interface: IBasicBlock

Get the index of the last instruction in the basic block. The value is an index into the instruction array that contains all the instructions for the method.

If the result is < 0, the block has no instructions

Specified by:

getLastInstructionIndex in interface IBasicBlock<T extends ISSABasicBlock>

Returns:

the instruction index for the last instruction in the basic block

See Also:

• IBasicBlock.getLastInstructionIndex()

iterator

public Iterator<SSAInstruction> iterator()

Specified by:

iterator in interface Iterable<T extends ISSABasicBlock>

See Also:

• Iterable.iterator()

getMethod

public IMethod getMethod()

Specified by:

getMethod in interface IBasicBlock<T extends ISSABasicBlock>

Returns:

governing method for this block

See Also:

• IBasicBlock.getMethod()

getNumber

public int getNumber()

Description copied from interface: IBasicBlock

Each basic block should have a unique number in its cfg

Specified by:

getNumber in interface IBasicBlock<T extends ISSABasicBlock>

Returns:

the basic block's number

See Also:

• IBasicBlock.getNumber()

isCatchBlock

public boolean isCatchBlock()

Description copied from interface: ISSABasicBlock

Is this block a catch block

Specified by:

isCatchBlock in interface IBasicBlock<T extends ISSABasicBlock>

Specified by:

isCatchBlock in interface ISSABasicBlock

Returns:

true if the basic block represents a catch block.

See Also:

• IBasicBlock.isCatchBlock()

isEntryBlock

public boolean isEntryBlock()

Description copied from interface: ISSABasicBlock

Does this block represent the unique entry to a ControlFlowGraph

Specified by:

isEntryBlock in interface IBasicBlock<T extends ISSABasicBlock>

Specified by:

isEntryBlock in interface ISSABasicBlock

Returns:

true if the basic block represents the unique entry block.

See Also:

• IBasicBlock.isEntryBlock()

isExitBlock

public boolean isExitBlock()

Description copied from interface: ISSABasicBlock

Does this block represent the unique exit from a ControlFlowGraph?

Specified by:

isExitBlock in interface IBasicBlock<T extends ISSABasicBlock>

Specified by:

isExitBlock in interface ISSABasicBlock

Returns:

true if the basic block represents the unique exit block.

See Also:

• IBasicBlock.isExitBlock()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

getDelegate

public T getDelegate()

getNode

public CGNode getNode()

toString

public String toString()

Overrides:

toString in class Object

getCaughtExceptionTypes

public Iterator<TypeReference> getCaughtExceptionTypes()

Specified by:

getCaughtExceptionTypes in interface ISSABasicBlock

Returns:

the set of exception types this block may catch.

getLastInstruction

public SSAInstruction getLastInstruction()

Specified by:

getLastInstruction in interface ISSABasicBlock

Returns:

the last instruction in this block.

iteratePhis

public Iterator<SSAPhiInstruction> iteratePhis()

Specified by:

iteratePhis in interface ISSABasicBlock

Returns:

the phi instructions incoming to this block

iteratePis

public Iterator<SSAPiInstruction> iteratePis()

Specified by:

iteratePis in interface ISSABasicBlock

Returns:

the pi instructions incoming to this block