Examples with EdgeInsnAttr jadx.core.dex.attributes.nodes.EdgeInsnAttr used on opensource projects

Example 1 with EdgeInsnAttr

use of jadx.core.dex.attributes.nodes.EdgeInsnAttr in project jadx by skylot.

the class RegionMaker method processIf.

private BlockNode processIf(IRegion currentRegion, BlockNode block, IfNode ifnode, RegionStack stack) {
    if (block.contains(AFlag.SKIP)) {
        // block already included in other 'if' region
        return ifnode.getThenBlock();
    }
    IfInfo currentIf = makeIfInfo(block);
    IfInfo mergedIf = mergeNestedIfNodes(currentIf);
    if (mergedIf != null) {
        currentIf = mergedIf;
    } else {
        // invert simple condition (compiler often do it)
        currentIf = IfInfo.invert(currentIf);
    }
    IfInfo modifiedIf = IfMakerHelper.restructureIf(mth, block, currentIf);
    if (modifiedIf != null) {
        currentIf = modifiedIf;
    } else {
        if (currentIf.getMergedBlocks().size() <= 1) {
            return null;
        }
        currentIf = makeIfInfo(block);
        currentIf = IfMakerHelper.restructureIf(mth, block, currentIf);
        if (currentIf == null) {
            // all attempts failed
            return null;
        }
    }
    confirmMerge(currentIf);
    IfRegion ifRegion = new IfRegion(currentRegion, block);
    ifRegion.setCondition(currentIf.getCondition());
    currentRegion.getSubBlocks().add(ifRegion);
    BlockNode outBlock = currentIf.getOutBlock();
    stack.push(ifRegion);
    stack.addExit(outBlock);
    ifRegion.setThenRegion(makeRegion(currentIf.getThenBlock(), stack));
    BlockNode elseBlock = currentIf.getElseBlock();
    if (elseBlock == null || stack.containsExit(elseBlock)) {
        ifRegion.setElseRegion(null);
    } else {
        ifRegion.setElseRegion(makeRegion(elseBlock, stack));
    }
    // TODO: make more common algorithm
    if (ifRegion.getElseRegion() == null && outBlock != null) {
        List<EdgeInsnAttr> edgeInsnAttrs = outBlock.getAll(AType.EDGE_INSN);
        if (!edgeInsnAttrs.isEmpty()) {
            Region elseRegion = new Region(ifRegion);
            for (EdgeInsnAttr edgeInsnAttr : edgeInsnAttrs) {
                if (edgeInsnAttr.getEnd().equals(outBlock)) {
                    addEdgeInsn(currentIf, elseRegion, edgeInsnAttr);
                }
            }
            ifRegion.setElseRegion(elseRegion);
        }
    }
    stack.pop();
    return outBlock;
}

Example 2 with EdgeInsnAttr

use of jadx.core.dex.attributes.nodes.EdgeInsnAttr in project jadx by skylot.

the class RegionMakerVisitor method insertEdgeInsn.

/**
	 * Insert insn block from edge insn attribute.
	 */
private static void insertEdgeInsn(Region region) {
    List<IContainer> subBlocks = region.getSubBlocks();
    if (subBlocks.isEmpty()) {
        return;
    }
    IContainer last = subBlocks.get(subBlocks.size() - 1);
    List<EdgeInsnAttr> edgeInsnAttrs = last.getAll(AType.EDGE_INSN);
    if (edgeInsnAttrs.isEmpty()) {
        return;
    }
    EdgeInsnAttr insnAttr = edgeInsnAttrs.get(0);
    if (!insnAttr.getStart().equals(last)) {
        return;
    }
    List<InsnNode> insns = Collections.singletonList(insnAttr.getInsn());
    region.add(new InsnContainer(insns));
}