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

Example 6 with ExcHandlerAttr

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

the class BlockFinish method fixSplitterBlock.

/**
	 * For evey exception handler must be only one splitter block,
	 * select correct one and remove others if necessary.
	 */
private static void fixSplitterBlock(BlockNode block) {
    ExcHandlerAttr excHandlerAttr = block.get(AType.EXC_HANDLER);
    if (excHandlerAttr == null) {
        return;
    }
    BlockNode handlerBlock = excHandlerAttr.getHandler().getHandlerBlock();
    if (handlerBlock.getPredecessors().size() < 2) {
        return;
    }
    Map<BlockNode, SplitterBlockAttr> splitters = new HashMap<BlockNode, SplitterBlockAttr>();
    for (BlockNode pred : handlerBlock.getPredecessors()) {
        pred = BlockUtils.skipSyntheticPredecessor(pred);
        SplitterBlockAttr splitterAttr = pred.get(AType.SPLITTER_BLOCK);
        if (splitterAttr != null && pred == splitterAttr.getBlock()) {
            splitters.put(pred, splitterAttr);
        }
    }
    if (splitters.size() < 2) {
        return;
    }
    BlockNode topSplitter = BlockUtils.getTopBlock(splitters.keySet());
    if (topSplitter == null) {
        LOG.warn("Unknown top splitter block from list: {}", splitters);
        return;
    }
    for (Map.Entry<BlockNode, SplitterBlockAttr> entry : splitters.entrySet()) {
        BlockNode pred = entry.getKey();
        SplitterBlockAttr splitterAttr = entry.getValue();
        if (pred == topSplitter) {
            block.addAttr(splitterAttr);
        } else {
            pred.remove(AType.SPLITTER_BLOCK);
            for (BlockNode s : pred.getCleanSuccessors()) {
                s.remove(AType.SPLITTER_BLOCK);
            }
        }
    }
}