java.lang.Object
- com.ibm.wala.util.graph.AbstractGraph<T>
- - com.ibm.wala.util.graph.AbstractNumberedGraph<T>
  - - com.ibm.wala.util.graph.impl.SparseNumberedGraph<T>
    - - com.ibm.wala.cfg.exc.intra.MutableCFG<X,T>

All Implemented Interfaces:

ControlFlowGraph<X,T>, EdgeManager<T>, Graph<T>, NodeManager<T>, NumberedEdgeManager<T>, NumberedGraph<T>, NumberedNodeManager<T>, Iterable<T>
```
public class MutableCFG<X,T extends IBasicBlock<X>>
extends SparseNumberedGraph<T>
implements ControlFlowGraph<X,T>
```
A modifiable control flow graph.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static <I,T extends IBasicBlock<I>> MutableCFG<I,T>`	`copyFrom(ControlFlowGraph<I,T> cfg)`
`T`	`entry()`	Return the entry basic block in the CFG
`T`	`exit()`
`T`	`getBlockForInstruction(int index)`
`BitVector`	`getCatchBlocks()`
`Collection<T>`	`getExceptionalPredecessors(T b)`	The order of blocks returned should be arbitrary but deterministic.
`List<T>`	`getExceptionalSuccessors(T b)`	The order of blocks returned must indicate the exception-handling scope.
`X[]`	`getInstructions()`
`IMethod`	`getMethod()`
`Collection<T>`	`getNormalPredecessors(T b)`	The order of blocks returned should be arbitrary but deterministic.
`Collection<T>`	`getNormalSuccessors(T b)`	The order of blocks returned should be arbitrary but deterministic.
`int`	`getProgramCounter(int index)`	TODO: move this into IR?

Methods inherited from class com.ibm.wala.util.graph.impl.SparseNumberedGraph
getEdgeManager, getNodeManager

Methods inherited from class com.ibm.wala.util.graph.AbstractNumberedGraph
getMaxNumber, getNode, getNumber, getPredNodeNumbers, getSuccNodeNumbers, iterateNodes

Methods inherited from class com.ibm.wala.util.graph.AbstractGraph
addEdge, addNode, containsNode, getNumberOfNodes, getPredNodeCount, getPredNodes, getSuccNodeCount, getSuccNodes, hasEdge, iterator, removeAllIncidentEdges, removeEdge, removeIncomingEdges, removeNode, removeNodeAndEdges, removeOutgoingEdges, toString

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

Methods inherited from interface com.ibm.wala.util.graph.EdgeManager
addEdge, getPredNodeCount, getPredNodes, getSuccNodeCount, getSuccNodes, hasEdge, removeAllIncidentEdges, removeEdge, removeIncomingEdges, removeOutgoingEdges

Methods inherited from interface com.ibm.wala.util.graph.Graph
removeNodeAndEdges

Methods inherited from interface java.lang.Iterable
forEach, spliterator

Methods inherited from interface com.ibm.wala.util.graph.NodeManager
addNode, containsNode, getNumberOfNodes, iterator, removeNode

Methods inherited from interface com.ibm.wala.util.graph.NumberedEdgeManager
getPredNodeNumbers, getSuccNodeNumbers

Methods inherited from interface com.ibm.wala.util.graph.NumberedNodeManager
getMaxNumber, getNode, getNumber, iterateNodes

- Method Detail
  - copyFrom
```
public static <I,T extends IBasicBlock<I>> MutableCFG<I,T> copyFrom(ControlFlowGraph<I,T> cfg)
```
  - entry
```
public T entry()
```
    Description copied from interface: ControlFlowGraph
    
    Return the entry basic block in the CFG
    
    Specified by:
    
    entry in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
  - exit
```
public T exit()
```
    Specified by:
    
    exit in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
    
    Returns:
    
    the synthetic exit block for the cfg
  - getCatchBlocks
```
public BitVector getCatchBlocks()
```
    Specified by:
    
    getCatchBlocks in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
    
    Returns:
    
    the indices of the catch blocks, as a bit vector
  - getBlockForInstruction
```
public T getBlockForInstruction(int index)
```
    Specified by:
    
    getBlockForInstruction in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
    
    Parameters:
    
    index - an instruction index
    
    Returns:
    
    the basic block which contains this instruction.
  - getInstructions
```
public X[] getInstructions()
```
    Specified by:
    
    getInstructions in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
    
    Returns:
    
    the instructions of this CFG, as an array.
  - getProgramCounter
```
public int getProgramCounter(int index)
```
    Description copied from interface: ControlFlowGraph
    
    TODO: move this into IR?
    
    Specified by:
    
    getProgramCounter in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
    
    Parameters:
    
    index - an instruction index
    
    Returns:
    
    the program counter (bytecode index) corresponding to that instruction
  - getMethod
```
public IMethod getMethod()
```
    Specified by:
    
    getMethod in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
    
    Returns:
    
    the Method this CFG represents
  - getExceptionalSuccessors
```
public List<T> getExceptionalSuccessors(T b)
```
    Description copied from interface: ControlFlowGraph
    
    The order of blocks returned must indicate the exception-handling scope. So the first block is the first candidate catch block, and so on. With this invariant one can compute the exceptional control flow for a given exception type.
    
    Specified by:
    
    getExceptionalSuccessors in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
    
    Returns:
    
    the basic blocks which may be reached from b via exceptional control flow
  - getNormalSuccessors
```
public Collection<T> getNormalSuccessors(T b)
```
    Description copied from interface: ControlFlowGraph
    
    The order of blocks returned should be arbitrary but deterministic.
    
    Specified by:
    
    getNormalSuccessors in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
    
    Returns:
    
    the basic blocks which may be reached from b via normal control flow
  - getExceptionalPredecessors
```
public Collection<T> getExceptionalPredecessors(T b)
```
    Description copied from interface: ControlFlowGraph
    
    The order of blocks returned should be arbitrary but deterministic.
    
    Specified by:
    
    getExceptionalPredecessors in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
    
    Returns:
    
    the basic blocks from which b may be reached via exceptional control flow
  - getNormalPredecessors
```
public Collection<T> getNormalPredecessors(T b)
```
    Description copied from interface: ControlFlowGraph
    
    The order of blocks returned should be arbitrary but deterministic.
    
    Specified by:
    
    getNormalPredecessors in interface ControlFlowGraph<X,T extends IBasicBlock<X>>
    
    Returns:
    
    the basic blocks from which b may be reached via normal control flow

Class MutableCFG<X,​T extends IBasicBlock<X>>

Method Summary

Methods inherited from class com.ibm.wala.util.graph.impl.SparseNumberedGraph

Methods inherited from class com.ibm.wala.util.graph.AbstractNumberedGraph

Methods inherited from class com.ibm.wala.util.graph.AbstractGraph

Methods inherited from class java.lang.Object

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

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

Methods inherited from interface java.lang.Iterable

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

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

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

Method Detail

copyFrom

entry

exit

getCatchBlocks

getBlockForInstruction

getInstructions

getProgramCounter

getMethod

getExceptionalSuccessors

getNormalSuccessors

getExceptionalPredecessors

getNormalPredecessors

Class MutableCFG<X,T extends IBasicBlock<X>>