Examples with IRegion jadx.core.dex.nodes.IRegion used on opensource projects

Example 21 with IRegion

use of jadx.core.dex.nodes.IRegion in project jadx by skylot.

the class RegionUtils method getFirstInsn.

public static InsnNode getFirstInsn(IContainer container) {
    if (container instanceof IBlock) {
        IBlock block = (IBlock) container;
        List<InsnNode> insnList = block.getInstructions();
        if (insnList.isEmpty()) {
            return null;
        }
        return insnList.get(0);
    } else if (container instanceof IBranchRegion) {
        return null;
    } else if (container instanceof IRegion) {
        IRegion region = (IRegion) container;
        List<IContainer> blocks = region.getSubBlocks();
        if (blocks.isEmpty()) {
            return null;
        }
        return getFirstInsn(blocks.get(0));
    } else {
        throw new JadxRuntimeException(unknownContainerType(container));
    }
}

Example 22 with IRegion

use of jadx.core.dex.nodes.IRegion in project jadx by skylot.

the class RegionUtils method getLastInsn.

public static InsnNode getLastInsn(IContainer container) {
    if (container instanceof IBlock) {
        IBlock block = (IBlock) container;
        List<InsnNode> insnList = block.getInstructions();
        if (insnList.isEmpty()) {
            return null;
        }
        return insnList.get(insnList.size() - 1);
    } else if (container instanceof IBranchRegion) {
        return null;
    } else if (container instanceof IRegion) {
        IRegion region = (IRegion) container;
        List<IContainer> blocks = region.getSubBlocks();
        if (blocks.isEmpty()) {
            return null;
        }
        return getLastInsn(blocks.get(blocks.size() - 1));
    } else {
        throw new JadxRuntimeException(unknownContainerType(container));
    }
}

Example 23 with IRegion

use of jadx.core.dex.nodes.IRegion in project jadx by skylot.

the class RegionUtils method isRegionContainsRegion.

/**
 * Check if {@code region} contains in {@code container}.
 * <br>
 * For simple region (not from exception handlers) search in parents
 * otherwise run recursive search because exception handlers can have several parents
 */
public static boolean isRegionContainsRegion(IContainer container, IRegion region) {
    if (container == region) {
        return true;
    }
    if (region == null) {
        return false;
    }
    IRegion parent = region.getParent();
    while (container != parent) {
        if (parent == null) {
            if (region.contains(AType.EXC_HANDLER)) {
                return isRegionContainsExcHandlerRegion(container, region);
            }
            return false;
        }
        region = parent;
        parent = region.getParent();
    }
    return true;
}

Example 24 with IRegion

use of jadx.core.dex.nodes.IRegion in project jadx by skylot.

the class ProcessTryCatchRegions method wrapBlocks.

/**
 * Extract all block dominated by 'dominator' to separate region and mark as try/catch block
 */
private static boolean wrapBlocks(IRegion replaceRegion, TryCatchBlockAttr tb, BlockNode dominator) {
    if (replaceRegion == null) {
        return false;
    }
    if (replaceRegion instanceof LoopRegion) {
        LoopRegion loop = (LoopRegion) replaceRegion;
        return wrapBlocks(loop.getBody(), tb, dominator);
    }
    if (replaceRegion instanceof IBranchRegion) {
        return wrapBlocks(replaceRegion.getParent(), tb, dominator);
    }
    Region tryRegion = new Region(replaceRegion);
    List<IContainer> subBlocks = replaceRegion.getSubBlocks();
    for (IContainer cont : subBlocks) {
        if (RegionUtils.hasPathThroughBlock(dominator, cont)) {
            if (isHandlerPath(tb, cont)) {
                break;
            }
            tryRegion.getSubBlocks().add(cont);
        }
    }
    if (tryRegion.getSubBlocks().isEmpty()) {
        return false;
    }
    TryCatchRegion tryCatchRegion = new TryCatchRegion(replaceRegion, tryRegion);
    tryRegion.setParent(tryCatchRegion);
    tryCatchRegion.setTryCatchBlock(tb);
    // replace first node by region
    IContainer firstNode = tryRegion.getSubBlocks().get(0);
    if (!replaceRegion.replaceSubBlock(firstNode, tryCatchRegion)) {
        return false;
    }
    subBlocks.removeAll(tryRegion.getSubBlocks());
    // fix parents for tryRegion sub blocks
    for (IContainer cont : tryRegion.getSubBlocks()) {
        if (cont instanceof AbstractRegion) {
            AbstractRegion aReg = (AbstractRegion) cont;
            aReg.setParent(tryRegion);
        }
    }
    return true;
}

Example 25 with IRegion

use of jadx.core.dex.nodes.IRegion in project jadx by skylot.

the class RegionMakerVisitor method visit.

@Override
public void visit(MethodNode mth) throws JadxException {
    if (mth.isNoCode() || mth.getBasicBlocks().isEmpty()) {
        return;
    }
    RegionMaker rm = new RegionMaker(mth);
    RegionStack state = new RegionStack(mth);
    // fill region structure
    BlockNode startBlock = Utils.first(mth.getEnterBlock().getCleanSuccessors());
    mth.setRegion(rm.makeRegion(startBlock, state));
    if (!mth.isNoExceptionHandlers()) {
        IRegion expOutBlock = rm.processTryCatchBlocks(mth);
        if (expOutBlock != null) {
            mth.getRegion().add(expOutBlock);
        }
    }
    postProcessRegions(mth);
}