public TreeVisitor getVisitor()

in camel-upgrade-recipes/src/main/java/org/apache/camel/upgrade/camel40/java/CamelBeanRecipe.java [51:105]
36 lines of code
8 McCabe index (conditional complexity)

    public TreeVisitor<?, ExecutionContext> getVisitor() {
        return RecipesUtil.newVisitor(new AbstractCamelJavaVisitor() {

            @Override
            protected J.MethodInvocation doVisitMethodInvocation(J.MethodInvocation method, ExecutionContext context) {
                J.MethodInvocation mi = super.doVisitMethodInvocation(method, context);
                Pattern findMethodPattern = Pattern.compile("method=.*");

                if (mi.getSimpleName().equals("to")) {
                    List<Expression> arguments = method.getArguments();

                    for (int i = 0; i < arguments.size(); i++) {
                        Expression argument = arguments.get(i);
                        if (argument instanceof J.Literal
                                && ((J.Literal) argument).getType().getClassName().equals("java.lang.String")
                                && findMethodPattern
                                        .matcher((String) (((J.Literal) method.getArguments().get(i)).getValue()))
                                        .find()) {

                            String uriWithMethod = (String) (((J.Literal) method.getArguments().get(i)).getValue());

                            String uriWithoutMethod = uriWithMethod.split("=")[0];

                            String methodNameAndArgs = uriWithMethod.split("=")[1];

                            //method without any args, we can simply return the mi in that case.
                            if (!methodNameAndArgs.contains("(") && !methodNameAndArgs.contains(")")) {
                                return mi;
                            }

                            String methodName = extractMethodName(methodNameAndArgs);

                            String actualArgs = methodNameAndArgs.substring(
                                    methodNameAndArgs.indexOf("(") + 1,
                                    methodNameAndArgs.indexOf(")"));

                            String updatedArg = uriWithoutMethod + "=" + methodName + "(" + updateMethodArgument(actualArgs)
                                                + ")";

                            doAfterVisit(new ChangeLiteral<>(argument, p -> updatedArg));

                            return mi;

                        }

                    }

                }

                return mi;
            }

        });

    }