Package jadx.core.dex.visitors.blocks

Class BlockExceptionHandler

java.lang.Object

jadx.core.dex.visitors.blocks.BlockExceptionHandler

public class BlockExceptionHandler
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static final org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor	Description
BlockExceptionHandler()

Method Summary

Modifier and Type	Method	Description
private static BlockNode	adjustTopBlock(BlockNode topBlock)
private static void	checkForMultiCatch(MethodNode mth, List<TryCatchBlockAttr> tryBlocks)
private static boolean	checkTryCatchRelation(List<TryCatchBlockAttr> tryBlocks, TryCatchBlockAttr outerTryBlock, TryCatchBlockAttr innerTryBlock)
private static void	clearTryBlocks(MethodNode mth, List<TryCatchBlockAttr> tryBlocks)
private static boolean	combineTryCatchBlocks(List<TryCatchBlockAttr> tryBlocks)
private static int	compareByTypeAndName(Comparator<ArgType> comparator, ClassInfo first, ClassInfo second)
private static void	connectExcHandlers(MethodNode mth, List<TryCatchBlockAttr> tryBlocks)	Wrap try blocks with top/bottom splitter and connect them to handler block.
private static void	connectSplittersAndHandlers(TryCatchBlockAttr tryCatchBlock, BlockNode topSplitterBlock, @Nullable BlockNode bottomSplitterBlock)
private static void	fixMoveExceptionInsn(BlockNode block, ExcHandlerAttr excHandlerAttr)
private static @Nullable CatchAttr	getCommonCatchAttr(BlockNode block)
private static BlockNode	getTopSplitterBlock(MethodNode mth, BlockNode top)
private static void	initExcHandlers(MethodNode mth)
private static @NotNull Predicate<BlockNode>	isHandlersIntersects(TryCatchBlockAttr outerTryBlock)
private static boolean	mergeMultiCatch(MethodNode mth, TryCatchBlockAttr tryCatch)
private static List<TryCatchBlockAttr>	prepareTryBlocks(MethodNode mth)
static boolean	process(MethodNode mth)
private static void	processCatchAttr(MethodNode mth)
private static void	removeExcHandler(MethodNode mth, ExceptionHandler excHandler)
private static void	removeMonitorExitFromExcHandler(MethodNode mth, ExceptionHandler excHandler)
private static void	removeTmpConnection(BlockNode block)
private static void	removeUnusedExcHandlers(MethodNode mth, List<TryCatchBlockAttr> tryBlocks, BlockSet blocks)	Remove excHandlers that were not used when connecting.
private static @Nullable BlockNode	searchBottomBlock(MethodNode mth, List<BlockNode> blocks)
private static BlockNode	searchTopBlock(MethodNode mth, List<BlockNode> blocks)
private static void	sortHandlers(MethodNode mth, List<TryCatchBlockAttr> tryBlocks)
private static boolean	wrapBlocksWithTryCatch(MethodNode mth, TryCatchBlockAttr tryCatchBlock)

Methods inherited from class java.lang.Object

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

Field Details

LOG

private static final org.slf4j.Logger LOG

Constructor Details

BlockExceptionHandler

public BlockExceptionHandler()

Method Details

process

public static boolean process(MethodNode mth)

connectExcHandlers

private static void connectExcHandlers(MethodNode mth,
 List<TryCatchBlockAttr> tryBlocks)

Wrap try blocks with top/bottom splitter and connect them to handler block. Sometimes try block can be handler block itself and should be connected before wrapping. Use queue for postpone try blocks not ready for wrap.

processCatchAttr

private static void processCatchAttr(MethodNode mth)

getCommonCatchAttr

@Nullable
private static @Nullable CatchAttr getCommonCatchAttr(BlockNode block)

initExcHandlers

private static void initExcHandlers(MethodNode mth)

removeTmpConnection

private static void removeTmpConnection(BlockNode block)

prepareTryBlocks

private static List<TryCatchBlockAttr> prepareTryBlocks(MethodNode mth)

clearTryBlocks

private static void clearTryBlocks(MethodNode mth,
 List<TryCatchBlockAttr> tryBlocks)

combineTryCatchBlocks

private static boolean combineTryCatchBlocks(List<TryCatchBlockAttr> tryBlocks)

checkTryCatchRelation

private static boolean checkTryCatchRelation(List<TryCatchBlockAttr> tryBlocks,
 TryCatchBlockAttr outerTryBlock,
 TryCatchBlockAttr innerTryBlock)

isHandlersIntersects

@NotNull
private static @NotNull Predicate<BlockNode> isHandlersIntersects(TryCatchBlockAttr outerTryBlock)

removeExcHandler

private static void removeExcHandler(MethodNode mth,
 ExceptionHandler excHandler)

wrapBlocksWithTryCatch

private static boolean wrapBlocksWithTryCatch(MethodNode mth,
 TryCatchBlockAttr tryCatchBlock)

getTopSplitterBlock

private static BlockNode getTopSplitterBlock(MethodNode mth,
 BlockNode top)

searchTopBlock

private static BlockNode searchTopBlock(MethodNode mth,
 List<BlockNode> blocks)

adjustTopBlock

private static BlockNode adjustTopBlock(BlockNode topBlock)

searchBottomBlock

@Nullable
private static @Nullable BlockNode searchBottomBlock(MethodNode mth,
 List<BlockNode> blocks)

connectSplittersAndHandlers

private static void connectSplittersAndHandlers(TryCatchBlockAttr tryCatchBlock,
 BlockNode topSplitterBlock,
 @Nullable
 @Nullable BlockNode bottomSplitterBlock)

fixMoveExceptionInsn

private static void fixMoveExceptionInsn(BlockNode block,
 ExcHandlerAttr excHandlerAttr)

removeMonitorExitFromExcHandler

private static void removeMonitorExitFromExcHandler(MethodNode mth,
 ExceptionHandler excHandler)

checkForMultiCatch

private static void checkForMultiCatch(MethodNode mth,
 List<TryCatchBlockAttr> tryBlocks)

mergeMultiCatch

private static boolean mergeMultiCatch(MethodNode mth,
 TryCatchBlockAttr tryCatch)

sortHandlers

private static void sortHandlers(MethodNode mth,
 List<TryCatchBlockAttr> tryBlocks)

compareByTypeAndName

private static int compareByTypeAndName(Comparator<ArgType> comparator,
 ClassInfo first,
 ClassInfo second)

removeUnusedExcHandlers

private static void removeUnusedExcHandlers(MethodNode mth,
 List<TryCatchBlockAttr> tryBlocks,
 BlockSet blocks)

Remove excHandlers that were not used when connecting. Check first if the blocks are unreachable.