nntpchan/contrib/backends/nntpchan-daemon/libmustache/render_context.hpp

#pragma once

#include <deque>
#include <list>
#include <sstream>
#include <stack>
#include <string>

#include "state/render_state.hpp"
#include "template_type.hpp"
#include <mstch/mstch.hpp>

namespace mstch
{

class render_context
{
public:
  class push
  {
  public:
    push(render_context &context, const mstch::node &node = {});
    ~push();
    std::string render(const template_type &templt);

  private:
    render_context &m_context;
  };

  render_context(const mstch::node &node, const std::map<std::string, template_type> &partials);
  const mstch::node &get_node(const std::string &token);
  std::string render(const template_type &templt, const std::string &prefix = "");
  std::string render_partial(const std::string &partial_name, const std::string &prefix);
  template <class T, class... Args> void set_state(Args &&... args)
  {
    m_state.top() = std::unique_ptr<render_state>(new T(std::forward<Args>(args)...));
  }

private:
  static const mstch::node null_node;
  const mstch::node &find_node(const std::string &token, std::list<node const *> current_nodes);
  std::map<std::string, template_type> m_partials;
  std::deque<mstch::node> m_nodes;
  std::list<const mstch::node *> m_node_ptrs;
  std::stack<std::unique_ptr<render_state>> m_state;
};
}