feature: avoid using `yield`, which is not supported in some user cases.

[membphis]

apache/apisix#1181 (comment)

[membphis]

we can pass an array table for storing the generating Lua code.

[membphis]

This is not easy, we need to be careful and add more test cases.

[sshniro]

Yes, I agree @membphis , I would prefer if anyone from the core team can fix it as I'm a beginner to Lua, in case if it is not in the immediate fix list, then I'll give it a try.

[membphis]

waiting for your PR ^_^

[sshniro]

Hi @membphis a small clarification, maybe I'm not understanding the bigger picture here, when I remove the coroutine and simply append the code chunks to a table, it produces the same results as before.

This is not easy

Can I know what things to watch out? and what is the reason to use coroutine here, as a table would also do the job, is it for any performance boost?

[membphis]

Can I know what things to watch out? and what is the reason to use coroutine here, as a table would also do the job, is it for any performance boost?

our project base on https://github.com/jdesgats/ljsonschema , you can contact him for more detail things.

As I know, use coroutine is simple but bad performance. I would like the array table way which is better performance.