ircd::json: Simplify json::object interface: eliminate path traversing overloads.

include/ircd/json/json.h

@@ -50,7 +50,6 @@ namespace ircd::json
 }
 
 #include "util.h"
-#include "path.h"
 #include "array.h"
 #include "object.h"
 #include "vector.h"

include/ircd/json/object.h

@@ -52,9 +52,7 @@ namespace ircd::json
 /// Recursive traversal cannot be achieved via a single key string value; so
 /// any string_view argument for a key will not be recursive. In other words,
 /// due to the fact that a JS identifier can have almost any character we have
-/// to use a different *type* like a vector of strings; in our common case we
-/// use an initializer_list typedef'ed as `path` and those overloads will be
-/// recursive.
+/// to use a different *type* like a vector of strings.
 ///
 struct ircd::json::object
 :string_view
@@ -85,21 +83,16 @@ struct ircd::json::object
 	size_t count() const;
 	size_t size() const; // warns if used; use count()
 	bool has(const string_view &key) const;
-	bool has(const path &) const;
 
 	// returns value or default
 	template<class T> T get(const string_view &key, const T &def = T{}) const;
-	template<class T> T get(const path &, const T &def = T{}) const;
 	string_view get(const string_view &key, const string_view &def = {}) const;
-	string_view get(const path &, const string_view &def = {}) const;
 
 	// returns value or throws not_found
 	template<class T = string_view> T at(const string_view &key) const;
-	template<class T = string_view> T at(const path &) const;
 
 	// returns value or empty
 	string_view operator[](const string_view &key) const;
-	string_view operator[](const path &) const;
 
 	// constructor. Note that you are able to construct from invalid JSON. The
 	// parser is not invoked until other operations and that's when it errors.
@@ -178,13 +171,6 @@ struct ircd::json::object::const_iterator
 	friend bool operator>(const const_iterator &, const const_iterator &);
 };
 
-inline ircd::string_view
-ircd::json::object::operator[](const path &path)
-const
-{
-	return get(path);
-}
-
 inline ircd::string_view
 ircd::json::object::operator[](const string_view &key)
 const
@@ -193,38 +179,6 @@ const
 	return it != end()? it->second : string_view{};
 }
 
-template<class T>
-T
-ircd::json::object::at(const path &path)
-const try
-{
-	object object(*this);
-	const auto it(std::find_if(std::begin(path), std::end(path), [&object]
-	(const string_view &key)
-	{
-		const auto it(object.find(key));
-		if(it == std::end(object))
-			throw not_found
-			{
-				"'%s'", key
-			};
-
-		object = it->second;
-		return false;
-	}));
-
-	return lex_cast<T>(object);
-}
-catch(const bad_lex_cast &e)
-{
-	throw type_error
-	{
-		"'%s' must cast to type %s",
-		ircd::string(path),
-		typeid(T).name()
-	};
-}
-
 template<ircd::json::name_hash_t key,
          class T>
 T
@@ -274,14 +228,6 @@ catch(const bad_lex_cast &e)
 	};
 }
 
-inline ircd::string_view
-ircd::json::object::get(const path &path,
-                        const string_view &def)
-const
-{
-	return get<string_view>(path, def);
-}
-
 inline ircd::string_view
 ircd::json::object::get(const string_view &key,
                         const string_view &def)
@@ -290,31 +236,6 @@ const
 	return get<string_view>(key, def);
 }
 
-template<class T>
-T
-ircd::json::object::get(const path &path,
-                        const T &def)
-const try
-{
-	object object(*this);
-	const auto it(std::find_if(std::begin(path), std::end(path), [&object]
-	(const string_view &key)
-	{
-		const auto it(object.find(key));
-		if(it == std::end(object))
-			return true;
-
-		object = it->second;
-		return false;
-	}));
-
-	return it == std::end(path)? lex_cast<T>(object) : def;
-}
-catch(const bad_lex_cast &e)
-{
-	return def;
-}
-
 template<ircd::json::name_hash_t key,
          class T>
 ircd::string_view
@@ -389,26 +310,6 @@ const
 	return sv.size() <= 2;
 }
 
-inline bool
-ircd::json::object::has(const path &path)
-const
-{
-	object object(*this);
-	const auto it(std::find_if(std::begin(path), std::end(path), [&object]
-	(const string_view &key)
-	{
-		const auto val(object[key]);
-		if(val.empty())
-			return true;
-
-		object = val;
-		return false;
-	}));
-
-	// && path.size() ensures false for empty path.
-	return it == std::end(path) && path.size();
-}
-
 inline bool
 ircd::json::object::has(const string_view &key)
 const

include/ircd/json/path.h

@@ -1,35 +0,0 @@
-// Matrix Construct
-//
-// Copyright (C) Matrix Construct Developers, Authors & Contributors
-// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
-//
-// Permission to use, copy, modify, and/or distribute this software for any
-// purpose with or without fee is hereby granted, provided that the above
-// copyright notice and this permission notice is present in all copies. The
-// full license for this software is available in the LICENSE file.
-
-#pragma once
-#define HAVE_IRCD_JSON_PATH_H
-
-namespace ircd::json
-{
-	/// Higher order type beyond a string to cleanly delimit multiple keys.
-	using path = std::initializer_list<string_view>;
-	std::ostream &operator<<(std::ostream &, const path &);
-}
-
-inline std::ostream &
-ircd::json::operator<<(std::ostream &s, const path &p)
-{
-	auto it(std::begin(p));
-	if(it != std::end(p))
-	{
-		s << *it;
-		++it;
-	}
-
-	for(; it != std::end(p); ++it)
-		s << '.' << *it;
-
-	return s;
-}

ircd/m/v1.cc

@@ -1272,9 +1272,14 @@ ircd::m::v1::fetch_head(const id::room &room_id,
 		request.in.content
 	};
 
+	const json::object event
+	{
+		proto.at("event")
+	};
+
 	const json::array prev_events
 	{
-		proto.at({"event", "prev_events"})
+		event.at("prev_events")
 	};
 
 	const json::array prev_event

modules/s_keys.cc

@@ -123,9 +123,19 @@ init_my_tls_crt()
 	const json::object config{};
 	if(!fs::exists(cert_file))
 	{
+		const json::object &certificate
+		{
+			config.get("certificate")
+		};
+
+		const json::object &self_
+		{
+			certificate.get(m::self::origin)
+		};
+
 		std::string subject
 		{
-			config.get({"certificate", m::self::origin, "subject"})
+			self_.get("subject")
 		};
 
 		if(!subject)