commit f775790c2dd3af75630fc3e33ecdd8b50bb8901e
Author: Rapptz <rapptz@gmail.com>
Date:   Mon Nov 25 04:56:27 2013 -0500

    Initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..39dc9054
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+obj/*
+bin/*
+*.ninja*
+demacro.txt
+Shinobi2
+dev.*
+main.cpp
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 00000000..3619ff30
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Danny Y., Rapptz
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 00000000..63a9f844
--- /dev/null
+++ b/README.md
@@ -0,0 +1,69 @@
+## Sol
+
+Sol is a C++ library binding to Lua. It currently supports Lua 5.2. Sol aims to be easy to use and easy to add to a project.
+At this time, the library is header-only for easy integration with projects.
+
+## Caveats
+
+As a change of mechanism to the C API, the Lua Stack is completely abstracted away. Not only that, but all lua errors are 
+thrown as exceptions instead. This allows you to handle the errors gracefully without being forced to exit.
+
+It should be noted that the library itself depends on `lua.hpp` to be found by your compiler. It uses angle brackets, e.g.
+`#include <lua.hpp>`. 
+
+## Example
+
+Here's an example on how to load a basic configuration struct with a Lua script.
+
+```cpp
+#include <sol.hpp>
+#include <iostream>
+#include <string>
+
+struct test {
+    int foo;
+    std::string bar;
+    double baz;
+};
+
+test load(const sol::table& t) {
+    return { t.get<int>("foo"), t.get<std::string>("bar"), t.get<double>("baz") };
+}
+
+int main() {
+    try {
+        sol::state lua;
+        lua.script("foo = 1234;\n"
+                   "bar = \"hello world\";\n"
+                   "baz = 1.4;");
+
+        test c = load(lua.global_table());
+        std::cout << '(' << c.foo << ", " << c.bar << ", " << c.baz << ")\n";
+    }
+    catch(const std::exception& e) {
+        std::cerr << e.what() << '\n';
+    }
+}
+```
+
+## License
+
+Sol is distributed with an MIT License. You can see LICENSE.txt for more info.
+
+## Supported Compilers
+
+Sol makes use of C++11 features. The features used are as follows:
+
+- rvalue references
+- move semantics
+- variadic templates
+- <tuple>
+- <type_traits>
+- std::unique_ptr
+- enum classes
+- auto
+- uniform initialisation
+- noexcept
+
+GCC 4.7 and Clang 3.3 or higher should be able to compile without problems. Visual Studio 2013 with the November CTP should
+be able to support this as well.
\ No newline at end of file
diff --git a/sol.hpp b/sol.hpp
new file mode 100644
index 00000000..a6fbf563
--- /dev/null
+++ b/sol.hpp
@@ -0,0 +1,27 @@
+// The MIT License (MIT)
+
+// Copyright (c) 2013 Danny Y., Rapptz
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef SOL_HPP
+#define SOL_HPP
+
+#include "sol/state.hpp"
+
+#endif // SOL_HPP
\ No newline at end of file
diff --git a/sol/error.hpp b/sol/error.hpp
new file mode 100644
index 00000000..d183b18a
--- /dev/null
+++ b/sol/error.hpp
@@ -0,0 +1,35 @@
+// The MIT License (MIT)
+
+// Copyright (c) 2013 Danny Y., Rapptz
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef SOL_ERROR_HPP
+#define SOL_ERROR_HPP
+
+#include <stdexcept>
+#include <string>
+
+namespace sol {
+class sol_error : public std::runtime_error {
+public:
+    sol_error(const std::string& str) noexcept: std::runtime_error("sol: error: " + str) {}
+};
+} // sol
+
+#endif // SOL_ERROR_HPP
\ No newline at end of file
diff --git a/sol/reference.hpp b/sol/reference.hpp
new file mode 100644
index 00000000..bcab8a05
--- /dev/null
+++ b/sol/reference.hpp
@@ -0,0 +1,96 @@
+// The MIT License (MIT)
+
+// Copyright (c) 2013 Danny Y., Rapptz
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef SOL_REFERENCE_HPP
+#define SOL_REFERENCE_HPP
+
+#include "types.hpp"
+
+namespace sol {
+class reference {
+private:
+    lua_State* L = nullptr; // non-owning
+    int ref = LUA_NOREF;
+
+    int copy() const {
+        push();
+        return luaL_ref(L, LUA_REGISTRYINDEX);
+    }
+public:
+    constexpr reference() noexcept = default;
+
+    reference(lua_State* L, int index): L(L) {
+        lua_pushvalue(L, index);
+        ref = luaL_ref(L, LUA_REGISTRYINDEX);
+    }
+
+    virtual ~reference() {
+        luaL_unref(L, LUA_REGISTRYINDEX, ref);
+    }
+
+
+    void push() const noexcept {
+        lua_rawgeti(L, LUA_REGISTRYINDEX, ref);
+    }
+
+    reference(reference&& o) noexcept {
+        L = o.L;
+        ref = o.ref;
+
+        o.L = nullptr;
+        o.ref = LUA_NOREF;
+    }
+
+    reference& operator=(reference&& o) noexcept {
+        L = o.L;
+        ref = o.ref;
+
+        o.L = nullptr;
+        o.ref = LUA_NOREF;
+
+        return *this;
+    }
+
+    reference(const reference& o) noexcept {
+        L = o.L;
+        ref = o.copy();
+    }
+
+    reference& operator=(const reference& o) noexcept {
+        L = o.L;
+        ref = o.copy();
+        return *this;
+    }
+
+    type get_type() {
+        push();
+        int result = lua_type(L, -1);
+        lua_pop(L, 1);
+        return static_cast<type>(result);
+    }
+
+    lua_State* state() const noexcept {
+        return L;
+    }
+};
+} // sol
+
+#endif // SOL_REFERENCE_HPP
\ No newline at end of file
diff --git a/sol/stack.hpp b/sol/stack.hpp
new file mode 100644
index 00000000..36e7a8ea
--- /dev/null
+++ b/sol/stack.hpp
@@ -0,0 +1,146 @@
+// The MIT License (MIT)
+
+// Copyright (c) 2013 Danny Y., Rapptz
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef SOL_STACK_HPP
+#define SOL_STACK_HPP
+
+#include "reference.hpp"
+#include <utility>
+#include <type_traits>
+
+namespace sol {
+namespace stack {
+namespace detail {
+template<typename T>
+inline T pop_unsigned(lua_State* L, std::true_type) {
+    return lua_tounsigned(L, -1);
+}
+
+template<typename T>
+inline T pop_unsigned(lua_State* L, std::false_type) {
+    return lua_tointeger(L, -1);
+}
+
+template<typename T>
+inline T pop_arithmetic(lua_State* L, std::false_type) {
+    // T is a floating point
+    return lua_tonumber(L, -1);
+}
+
+template<typename T>
+inline T pop_arithmetic(lua_State* L, std::true_type) {
+    // T is an integral
+    return pop_unsigned<T>(L, std::is_unsigned<T>{});
+}
+
+template<typename T>
+inline T pop_helper(lua_State* L, std::true_type) {
+    // T is a class type
+    return T(L, -1);
+}
+
+template<typename T>
+inline T pop_helper(lua_State* L, std::false_type) {
+    // T is a fundamental type
+    return pop_arithmetic<T>(L, std::is_integral<T>{});
+}
+
+template<typename T>
+inline void push_unsigned(lua_State* L, T x, std::true_type) {
+    lua_pushunsigned(L, x);
+}
+
+template<typename T>
+inline void push_unsigned(lua_State* L, T x, std::false_type) {
+    lua_pushinteger(L, x);
+}
+
+template<typename T>
+inline void push_arithmetic(lua_State* L, T x, std::true_type) {
+    // T is an integral type
+    push_unsigned(L, x, std::is_unsigned<T>{});
+}
+
+template<typename T>
+inline void push_arithmetic(lua_State* L, T x, std::false_type) {
+    // T is an floating point type
+    lua_pushnumber(L, x);
+}
+} // detail
+
+template<typename T>
+inline T pop(lua_State* L) {
+    auto result = detail::pop_helper<T>(L, std::is_class<T>{});
+    lua_pop(L, 1);
+    return result;
+}
+
+template<>
+inline bool pop<bool>(lua_State* L) {
+    auto result = lua_toboolean(L, -1);
+    lua_pop(L, 1);
+    return result;
+}
+
+template<>
+inline std::string pop<std::string>(lua_State* L) {
+    std::string::size_type len;
+    auto str = lua_tolstring(L, -1, &len);
+    lua_pop(L, 1);
+    return { str, len };
+}
+
+template<>
+inline const char* pop<const char*>(lua_State* L) {
+    auto result = lua_tostring(L, -1);
+    lua_pop(L, 1);
+    return result;
+}
+
+template<typename T>
+inline void push(lua_State* L, T arithmetic) {
+    detail::push_arithmetic(L, arithmetic, std::is_integral<T>{});
+}
+
+inline void push(lua_State* L, bool boolean) {
+    lua_pushboolean(L, boolean);
+}
+
+inline void push(lua_State* L, const nil_t&) {
+    lua_pushnil(L);
+}
+
+inline void push(lua_State* L, lua_CFunction func) {
+    lua_pushcfunction(L, func);
+}
+
+template<size_t N>
+inline void push(lua_State* L, const char (&str)[N]) {
+    lua_pushlstring(L, str, N - 1);
+}
+
+inline void push(lua_State* L, const std::string& str) {
+    lua_pushlstring(L, str.c_str(), str.size());
+}
+} // stack
+} // sol
+
+#endif // SOL_STACK_HPP
\ No newline at end of file
diff --git a/sol/state.hpp b/sol/state.hpp
new file mode 100644
index 00000000..86322ff4
--- /dev/null
+++ b/sol/state.hpp
@@ -0,0 +1,91 @@
+// The MIT License (MIT)
+
+// Copyright (c) 2013 Danny Y., Rapptz
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef SOL_STATE_HPP
+#define SOL_STATE_HPP
+
+#include "error.hpp"
+#include "table.hpp"
+#include <memory>
+
+namespace sol {
+int atpanic(lua_State* L) {
+    throw sol_error(lua_tostring(L, -1));
+}
+
+class state {
+private:
+    std::unique_ptr<lua_State, void(*)(lua_State*)> L;
+    table reg;
+    table global;
+public:
+    state(): 
+    L(luaL_newstate(), lua_close),  
+    reg(L.get(), LUA_REGISTRYINDEX), 
+    global(reg.get<table>(LUA_RIDX_GLOBALS)) {
+        lua_atpanic(L.get(), atpanic);
+    }
+
+    state(const std::string& filename): 
+    L(luaL_newstate(), lua_close), 
+    reg(L.get(), LUA_REGISTRYINDEX), 
+    global(reg.get<table>(LUA_RIDX_GLOBALS)) {
+        lua_atpanic(L.get(), atpanic);
+        open_file(filename);
+    }
+
+    void open_libraries() {
+        luaL_openlibs(L.get());
+    }
+
+    void script(const std::string& code) {
+        if(luaL_dostring(L.get(), code.c_str())) {
+            lua_error(L.get());
+        }
+    }
+
+    void open_file(const std::string& filename) {
+        if(luaL_dofile(L.get(), filename.c_str())) {
+            lua_error(L.get());
+        }
+    }
+
+    template<typename T, typename U>
+    T get(U&& key) const {
+        return global.get<T>(std::forward<U>(key));
+    }
+
+    template<typename T, typename U>
+    state& set(T&& key, U&& value) {
+        return global.set(std::forward<T>(key), std::forward<U>(value));
+    }
+
+    table global_table() const {
+        return global;
+    }
+
+    table registry() const {
+        return reg;
+    }
+};
+} // sol
+
+#endif // SOL_STATE_HPP
\ No newline at end of file
diff --git a/sol/table.hpp b/sol/table.hpp
new file mode 100644
index 00000000..96f64c8c
--- /dev/null
+++ b/sol/table.hpp
@@ -0,0 +1,58 @@
+// The MIT License (MIT)
+
+// Copyright (c) 2013 Danny Y., Rapptz
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef SOL_TABLE_HPP
+#define SOL_TABLE_HPP
+
+#include "stack.hpp"
+
+namespace sol {
+class table : virtual public reference {
+public:
+    table() noexcept: reference{} {}
+    table(lua_State* L, int index = -1): reference(L, index) {
+        type_assert(L, index, type::table);
+    }
+
+    template<typename T, typename U>
+    T get(U&& key) const {
+        push();
+        stack::push(state(), std::forward<U>(key));
+        lua_gettable(state(), -2);
+        type_assert(state(), -1, type_of<T>());
+        auto result = stack::pop<T>(state());
+        lua_pop(state(), 1);
+        return result;
+    }
+
+    template<typename T, typename U>
+    table& set(T&& key, U&& value) {
+        push();
+        stack::push(state(), std::forward<T>(key));
+        stack::push(state(), std::forward<U>(value));
+        lua_settable(state(), -3);
+        lua_pop(state(), 1);
+        return *this;
+    }
+};
+} // sol
+
+#endif // SOL_TABLE_HPP
\ No newline at end of file
diff --git a/sol/types.hpp b/sol/types.hpp
new file mode 100644
index 00000000..31956544
--- /dev/null
+++ b/sol/types.hpp
@@ -0,0 +1,108 @@
+// The MIT License (MIT)
+
+// Copyright (c) 2013 Danny Y., Rapptz
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef SOL_TYPES_HPP
+#define SOL_TYPES_HPP
+
+#include <lua.hpp>
+#include <string>
+#include <type_traits>
+
+namespace sol {
+struct nil_t {};
+constexpr nil_t nil{};
+
+enum class type : int {
+    none = LUA_TNONE,
+    nil = LUA_TNIL,
+    string = LUA_TSTRING,
+    number = LUA_TNUMBER,
+    thread = LUA_TTHREAD,
+    boolean = LUA_TBOOLEAN,
+    function = LUA_TFUNCTION,
+    userdata = LUA_TUSERDATA,
+    lightuserdata = LUA_TLIGHTUSERDATA,
+    table = LUA_TTABLE
+};
+
+inline void type_error(lua_State* L, int expected, int actual) {
+    luaL_error(L, "expected %s, received %s", lua_typename(L, expected), lua_typename(L, actual));
+}
+
+inline void type_assert(lua_State* L, int index, type expected) {
+    int actual = lua_type(L, index);
+    if(static_cast<int>(expected) != actual) {
+        type_error(L, static_cast<int>(expected), actual);
+    }
+}
+
+class table;
+class function;
+
+namespace detail {
+template<typename T>
+inline type arithmetic(std::true_type) {
+    return type::number;
+}
+
+template<typename T>
+inline type arithmetic(std::false_type) {
+    return type::none;
+}
+} // detail
+
+template<typename T>
+inline type type_of() {
+    return detail::arithmetic<T>(std::is_arithmetic<T>{});
+}
+
+template<>
+inline type type_of<table>() {
+    return type::table;
+}
+
+template<>
+inline type type_of<function>() {
+    return type::function;
+}
+
+template<>
+inline type type_of<const char*>() {
+    return type::string;
+}
+
+template<>
+inline type type_of<std::string>() {
+    return type::string;
+}
+
+template<>
+inline type type_of<nil_t>() {
+    return type::nil;
+}
+
+template<>
+inline type type_of<bool>() {
+    return type::boolean;
+}
+} // sol
+
+#endif // SOL_TYPES_HPP
\ No newline at end of file