com.ibm.wala.cfg

Interface IBasicBlock<InstType>

All Superinterfaces:

com.ibm.wala.util.graph.INodeWithNumber, Iterable<InstType>

All Known Subinterfaces:

IExplodedBasicBlock, ISSABasicBlock

All Known Implementing Classes:

BasicBlockInContext, InducedCFG.BasicBlock, ShrikeCFG.BasicBlock, SSACFG.BasicBlock, SSACFG.ExceptionHandlerBasicBlock

public interface IBasicBlock<InstType>
extends com.ibm.wala.util.graph.INodeWithNumber, Iterable<InstType>

An interface for a basic block in a control flow graph.

Method Summary

Methods

Modifier and Type	Method and Description
int	getFirstInstructionIndex() Get the index of the first instruction in the basic block.
int	getLastInstructionIndex() Get the index of the last instruction in the basic block.
IMethod	getMethod()
int	getNumber() Each basic block should have a unique number in its cfg
boolean	isCatchBlock() Return true if the basic block represents a catch block.
boolean	isEntryBlock() Return true if the basic block represents the unique entry block.
boolean	isExitBlock() Return true if the basic block represents the unique exit block.

Methods inherited from interface com.ibm.wala.util.graph.INodeWithNumber

getGraphNodeId, setGraphNodeId

Methods inherited from interface java.lang.Iterable

iterator

Method Detail

getFirstInstructionIndex

int getFirstInstructionIndex()

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

Returns:

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

getLastInstructionIndex

int getLastInstructionIndex()

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

Returns:

the instruction index for the last instruction in the basic block

isCatchBlock

boolean isCatchBlock()

Return true if the basic block represents a catch block.

Returns:

true if the basic block represents a catch block.

isExitBlock

boolean isExitBlock()

Return true if the basic block represents the unique exit block.

Returns:

true if the basic block represents the unique exit block.

isEntryBlock

boolean isEntryBlock()

Return true if the basic block represents the unique entry block.

Returns:

true if the basic block represents the unique entry block.

getMethod

IMethod getMethod()

Returns:

governing method for this block

getNumber

int getNumber()

Each basic block should have a unique number in its cfg

Returns:

the basic block's number