Examples with ExceptionHandler jadx.core.dex.trycatch.ExceptionHandler used on opensource projects

Example 11 with ExceptionHandler

use of jadx.core.dex.trycatch.ExceptionHandler in project jadx by skylot.

the class RegionUtils method getExcHandlersForRegion.

public static List<IContainer> getExcHandlersForRegion(IContainer region) {
    CatchAttr cb = region.get(AType.CATCH_BLOCK);
    if (cb != null) {
        TryCatchBlock tb = cb.getTryBlock();
        List<IContainer> list = new ArrayList<IContainer>(tb.getHandlersCount());
        for (ExceptionHandler eh : tb.getHandlers()) {
            list.add(eh.getHandlerRegion());
        }
        return list;
    }
    return Collections.emptyList();
}

Example 12 with ExceptionHandler

use of jadx.core.dex.trycatch.ExceptionHandler in project jadx by skylot.

the class RegionGen method makeTryCatch.

private void makeTryCatch(TryCatchRegion region, CodeWriter code) throws CodegenException {
    code.startLine("try {");
    makeRegionIndent(code, region.getTryRegion());
    // TODO: move search of 'allHandler' to 'TryCatchRegion'
    ExceptionHandler allHandler = null;
    for (Map.Entry<ExceptionHandler, IContainer> entry : region.getCatchRegions().entrySet()) {
        ExceptionHandler handler = entry.getKey();
        if (handler.isCatchAll()) {
            if (allHandler != null) {
                LOG.warn("Several 'all' handlers in try/catch block in {}", mth);
            }
            allHandler = handler;
        } else {
            makeCatchBlock(code, handler);
        }
    }
    if (allHandler != null) {
        makeCatchBlock(code, allHandler);
    }
    IContainer finallyRegion = region.getFinallyRegion();
    if (finallyRegion != null) {
        code.startLine("} finally {");
        makeRegionIndent(code, finallyRegion);
    }
    code.startLine('}');
}

Example 13 with ExceptionHandler

use of jadx.core.dex.trycatch.ExceptionHandler in project jadx by skylot.

the class DepthRegionTraversal method traverseIncludingExcHandlers.

public static void traverseIncludingExcHandlers(MethodNode mth, IRegionIterativeVisitor visitor) {
    boolean repeat;
    int k = 0;
    do {
        repeat = traverseIterativeStepInternal(mth, visitor, mth.getRegion());
        if (!repeat) {
            for (ExceptionHandler h : mth.getExceptionHandlers()) {
                repeat = traverseIterativeStepInternal(mth, visitor, h.getHandlerRegion());
                if (repeat) {
                    break;
                }
            }
        }
        if (k++ > ITERATIVE_LIMIT) {
            throw new JadxOverflowException("Iterative traversal limit reached, method: " + mth);
        }
    } while (repeat);
}

Example 14 with ExceptionHandler

use of jadx.core.dex.trycatch.ExceptionHandler in project jadx by skylot.

the class BlockExceptionHandler method processExceptionHandlers.

private static void processExceptionHandlers(MethodNode mth, BlockNode block) {
    ExcHandlerAttr handlerAttr = block.get(AType.EXC_HANDLER);
    if (handlerAttr == null) {
        return;
    }
    ExceptionHandler excHandler = handlerAttr.getHandler();
    excHandler.addBlock(block);
    for (BlockNode node : BlockUtils.collectBlocksDominatedBy(block, block)) {
        excHandler.addBlock(node);
    }
    for (BlockNode excBlock : excHandler.getBlocks()) {
        // remove 'monitor-exit' from exception handler blocks
        InstructionRemover remover = new InstructionRemover(mth, excBlock);
        for (InsnNode insn : excBlock.getInstructions()) {
            if (insn.getType() == InsnType.MONITOR_ENTER) {
                break;
            }
            if (insn.getType() == InsnType.MONITOR_EXIT) {
                remover.add(insn);
            }
        }
        remover.perform();
        // if 'throw' in exception handler block have 'catch' - merge these catch blocks
        for (InsnNode insn : excBlock.getInstructions()) {
            CatchAttr catchAttr = insn.get(AType.CATCH_BLOCK);
            if (catchAttr == null) {
                continue;
            }
            if (insn.getType() == InsnType.THROW || onlyAllHandler(catchAttr.getTryBlock())) {
                TryCatchBlock handlerBlock = handlerAttr.getTryBlock();
                TryCatchBlock catchBlock = catchAttr.getTryBlock();
                handlerBlock.merge(mth, catchBlock);
            }
        }
    }
}