public List matchForException()

in bytekit-core/src/main/java/com/alibaba/bytekit/asm/location/InvokeLocationMatcher.java [119:173]
39 lines of code
8 McCabe index (conditional complexity)

    public List<Location> matchForException(MethodProcessor methodProcessor) {
        List<Location> locations = new ArrayList<Location>();
        AbstractInsnNode insnNode = methodProcessor.getEnterInsnNode();

        MethodNode methodNode = methodProcessor.getMethodNode();

        List<MethodInsnNode> methodInsnNodes = new ArrayList<MethodInsnNode>();
        
        LocationFilter locationFilter = methodProcessor.getLocationFilter();
        
        LocationType locationType = LocationType.INVOKE_EXCEPTION_EXIT;

        int matchedCount = 0;
        while (insnNode != null) {
            if (insnNode instanceof MethodInsnNode) {
                MethodInsnNode methodInsnNode = (MethodInsnNode) insnNode;

                if (matchCall(methodInsnNode)) {
                    if(locationFilter.allow(methodInsnNode, locationType, this.whenComplete)) {
                        matchedCount++;
                        if (count <= 0 || count == matchedCount) {
                            methodInsnNodes.add(methodInsnNode);
                        }
                    }
                }
            }
            insnNode = insnNode.getNext();
        }

        // insert try/catch
        for (MethodInsnNode methodInsnNode : methodInsnNodes) {
            TryCatchBlock tryCatchBlock = new TryCatchBlock(methodNode);

            InsnList toInsert = new InsnList();

            LabelNode gotoDest = new LabelNode();

            LabelNode startLabelNode = tryCatchBlock.getStartLabelNode();
            LabelNode endLabelNode = tryCatchBlock.getEndLabelNode();

            toInsert.add(new JumpInsnNode(Opcodes.GOTO, gotoDest));
            toInsert.add(endLabelNode);
            AsmOpUtils.throwException(toInsert);
            locations.add(new InvokeExceptionExitLocation(methodInsnNode, endLabelNode));

            toInsert.add(gotoDest);

            methodNode.instructions.insertBefore(methodInsnNode, startLabelNode);
            methodNode.instructions.insert(methodInsnNode, toInsert);

            tryCatchBlock.sort();
        }

        return locations;
    }