Method insert

src/json-validator.cpp:182–199

	content_checker &content_check() { return content_check_; }

	void insert(const json_uri &uri, const std::shared_ptr<schema> &s)
	{
		auto &file = get_or_create_file(uri.location());
		auto sch = file.schemas.lower_bound(uri.fragment());
		if (sch != file.schemas.end() && !(file.schemas.key_comp()(uri.fragment(), sch->first))) {
			throw std::invalid_argument("schema with " + uri.to_string() + " already inserted");
			return;
		}

		file.schemas.insert({uri.fragment(), s});

		// was someone referencing this newly inserted schema?
		auto unresolved = file.unresolved.find(uri.fragment());
		if (unresolved != file.unresolved.end()) {
			unresolved->second->set_target(s);
			file.unresolved.erase(unresolved);
		}
	}

	void insert_unknown_keyword(const json_uri &uri, const std::string &key, json &value)
	{