How to pass param from parent template to custom tag?

[Huai-Kang]

I register a custom tag section to load template string from local object, and want to pass param to it, just like include or render, now it like this:

Liquid.registerTag('section', {
  parse: function(tagToken, remainTokens) {
    this.sectionName = tagToken.args;
  },
  render: async function(scope, hash) {
    let sectionTemplate;
    const template = this.sectionName.slice(1, -1)
    sectionTemplate = global.__FAKE_DATA.sections[template];
    if (!sectionTemplate) throw new Error(`cannot find template file by given section name`);
    return this.liquid.parseAndRender(sectionTemplate, scope.getAll(), scope.opts);
  }
});

What can I do to add param support?

[Huai-Kang]

And btw, if I want Liquid load all template from an object instead of file, what is the right way to do this? custom tag like behind comment or rewrite Liquid method?

[Huai-Kang]

Now I find Liquid Abstract-File-System, looks like this will resolve my problem, I will close this issue.