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

Example 6 with Edge

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

the class RegionMaker method checkLoopExits.

private boolean checkLoopExits(LoopInfo loop, BlockNode mainExitBlock) {
    List<Edge> exitEdges = loop.getExitEdges();
    if (exitEdges.size() < 2) {
        return true;
    }
    Optional<Edge> mainEdgeOpt = exitEdges.stream().filter(edge -> edge.getSource() == mainExitBlock).findFirst();
    if (!mainEdgeOpt.isPresent()) {
        throw new JadxRuntimeException("Not found exit edge by exit block: " + mainExitBlock);
    }
    Edge mainExitEdge = mainEdgeOpt.get();
    BlockNode mainOutBlock = mainExitEdge.getTarget();
    for (Edge exitEdge : exitEdges) {
        if (exitEdge != mainExitEdge) {
            // all exit paths must be same or don't cross (will be inside loop)
            BlockNode exitBlock = exitEdge.getTarget();
            if (!isEqualPaths(mainOutBlock, exitBlock)) {
                BlockNode crossBlock = BlockUtils.getPathCross(mth, mainOutBlock, exitBlock);
                if (crossBlock != null) {
                    return false;
                }
            }
        }
    }
    return true;
}

Example 7 with Edge

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

the class RegionMaker method insertLoopBreak.

private boolean insertLoopBreak(RegionStack stack, LoopInfo loop, BlockNode loopExit, Edge exitEdge) {
    BlockNode exit = exitEdge.getTarget();
    Edge insertEdge = null;
    boolean confirm = false;
    // process special cases:
    // 1. jump to outer loop
    BlockNode exitEnd = BlockUtils.followEmptyPath(exit);
    List<LoopInfo> loops = exitEnd.getAll(AType.LOOP);
    for (LoopInfo loopAtEnd : loops) {
        if (loopAtEnd != loop) {
            insertEdge = exitEdge;
            confirm = true;
            break;
        }
    }
    if (!confirm) {
        BlockNode insertBlock = null;
        while (exit != null) {
            if (insertBlock != null && isPathExists(loopExit, exit)) {
                // found cross
                if (canInsertBreak(insertBlock)) {
                    insertEdge = new Edge(insertBlock, insertBlock.getSuccessors().get(0));
                    confirm = true;
                    break;
                }
                return false;
            }
            insertBlock = exit;
            List<BlockNode> cs = exit.getCleanSuccessors();
            exit = cs.size() == 1 ? cs.get(0) : null;
        }
    }
    if (!confirm) {
        return false;
    }
    InsnNode breakInsn = new InsnNode(InsnType.BREAK, 0);
    breakInsn.addAttr(AType.LOOP, loop);
    EdgeInsnAttr.addEdgeInsn(insertEdge, breakInsn);
    stack.addExit(exit);
    // add label to 'break' if needed
    addBreakLabel(exitEdge, exit, breakInsn);
    return true;
}