Class ExceptionHandlerMapper

java.lang.Object

com.strobel.assembler.metadata.ExceptionHandlerMapper

public final class ExceptionHandlerMapper
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private final ControlFlowNode	_entryPoint
private final ControlFlowNode	_exceptionalExit
private final List<ExceptionHandler>	_handlerPlaceholders
private final boolean[]	_hasIncomingJumps
private final InstructionCollection	_instructions
private int	_nextBlockId
private final List<ControlFlowNode>	_nodes
private final int[]	_offsets
private final ControlFlowNode	_regularExit
private final List<ExceptionTableEntry>	_tableEntries
(package private) boolean	copyFinallyBlocks

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ExceptionHandlerMapper(InstructionCollection instructions, List<ExceptionTableEntry> tableEntries)

Method Summary

Modifier and Type	Method	Description
private ControlFlowGraph	build()
private void	calculateIncomingJumps()
private ControlFlowEdge	createEdge(ControlFlowNode fromNode, ControlFlowNode toNode, JumpType type)
private ControlFlowEdge	createEdge(ControlFlowNode fromNode, Instruction toInstruction, JumpType type)
private void	createExceptionalControlFlow()
private List<ExceptionHandler>	createHandlerPlaceholders()
private void	createNodes()
private void	createRegularControlFlow()
private static Set<ControlFlowNode>	findDominatedNodes(ControlFlowGraph cfg, ControlFlowNode head)
private ExceptionHandler	findInnermostExceptionHandler(int offsetInTryBlock)
private static ControlFlowNode	findInnermostExceptionHandlerNode(ControlFlowGraph cfg, int offsetInTryBlock)
private ControlFlowNode	findNode(Instruction instruction)
private ControlFlowNode	findParentExceptionHandlerNode(ControlFlowNode node)
private int	getInstructionIndex(Instruction instruction)
private boolean	isHandlerStart(Instruction instruction)
private static boolean	isNarrower(ExceptionHandler handler, ExceptionHandler anchor)
static List<ExceptionHandler>	run(InstructionCollection instructions, List<ExceptionTableEntry> tableEntries)
private static boolean	shouldIncludeExceptionalExit(ControlFlowGraph cfg, ControlFlowNode head, ControlFlowNode node)

Methods inherited from class Object

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

Field Details

_instructions

private final InstructionCollection _instructions

_tableEntries

private final List<ExceptionTableEntry> _tableEntries

_handlerPlaceholders

private final List<ExceptionHandler> _handlerPlaceholders

_nodes

private final List<ControlFlowNode> _nodes

_offsets

private final int[] _offsets

_hasIncomingJumps

private final boolean[] _hasIncomingJumps

_entryPoint

private final ControlFlowNode _entryPoint

_regularExit

private final ControlFlowNode _regularExit

_exceptionalExit

private final ControlFlowNode _exceptionalExit

_nextBlockId

private int _nextBlockId

copyFinallyBlocks

boolean copyFinallyBlocks

Constructor Details

ExceptionHandlerMapper

private ExceptionHandlerMapper(InstructionCollection instructions,
 List<ExceptionTableEntry> tableEntries)

Method Details

run

public static List<ExceptionHandler> run(InstructionCollection instructions,
 List<ExceptionTableEntry> tableEntries)

findNode

private ControlFlowNode findNode(Instruction instruction)

findDominatedNodes

private static Set<ControlFlowNode> findDominatedNodes(ControlFlowGraph cfg,
 ControlFlowNode head)

shouldIncludeExceptionalExit

private static boolean shouldIncludeExceptionalExit(ControlFlowGraph cfg,
 ControlFlowNode head,
 ControlFlowNode node)

build

private ControlFlowGraph build()

isHandlerStart

private boolean isHandlerStart(Instruction instruction)

calculateIncomingJumps

private void calculateIncomingJumps()

createNodes

private void createNodes()

createRegularControlFlow

private void createRegularControlFlow()

createExceptionalControlFlow

private void createExceptionalControlFlow()

findInnermostExceptionHandlerNode

private static ControlFlowNode findInnermostExceptionHandlerNode(ControlFlowGraph cfg,
 int offsetInTryBlock)

isNarrower

private static boolean isNarrower(ExceptionHandler handler,
 ExceptionHandler anchor)

findInnermostExceptionHandler

private ExceptionHandler findInnermostExceptionHandler(int offsetInTryBlock)

findParentExceptionHandlerNode

private ControlFlowNode findParentExceptionHandlerNode(ControlFlowNode node)

getInstructionIndex

private int getInstructionIndex(Instruction instruction)

createEdge

private ControlFlowEdge createEdge(ControlFlowNode fromNode,
 Instruction toInstruction,
 JumpType type)

createEdge

private ControlFlowEdge createEdge(ControlFlowNode fromNode,
 ControlFlowNode toNode,
 JumpType type)

createHandlerPlaceholders

private List<ExceptionHandler> createHandlerPlaceholders()