mirror of
https://github.com/ThePhD/sol2.git
synced 2024-03-22 13:10:44 +08:00
27174aba9c
Adds a `protect()` function to trigger safety for an item. This commit also optimizes away all instances of virtual function calls for function calls and storage. Will need to test speed to see how it works out. Closes #133 Closes #134 Closes #135 Closes #136
439 lines
13 KiB
C++
439 lines
13 KiB
C++
// The MIT License (MIT)
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// Copyright (c) 2013-2016 Rapptz, ThePhD and contributors
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SOL_STATE_VIEW_HPP
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#define SOL_STATE_VIEW_HPP
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#include "error.hpp"
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#include "table.hpp"
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#include "load_result.hpp"
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#include <memory>
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namespace sol {
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enum class lib : char {
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base,
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package,
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coroutine,
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string,
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os,
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math,
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table,
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debug,
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bit32,
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io,
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ffi,
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jit,
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count
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};
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class state_view {
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private:
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lua_State* L;
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table reg;
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global_table global;
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optional<object> is_loaded_package(const std::string& key) {
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auto loaded = reg.traverse_get<optional<object>>("_LOADED", key);
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bool is53mod = loaded && !(loaded->is<bool>() && !loaded->as<bool>());
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if (is53mod)
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return loaded;
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#if SOL_LUA_VERSION <= 501
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auto loaded51 = global.traverse_get<optional<object>>("package", "loaded", key);
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bool is51mod = loaded51 && !(loaded51->is<bool>() && !loaded51->as<bool>());
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if (is51mod)
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return loaded51;
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#endif
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return nullopt;
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}
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template <typename T>
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void ensure_package(const std::string& key, T&& sr) {
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#if SOL_LUA_VERSION <= 501
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auto pkg = global["package"];
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if (!pkg.valid()) {
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pkg = create_table_with("loaded", create_table_with(key, sr));
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}
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else {
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auto ld = pkg["loaded"];
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if (!ld.valid()) {
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ld = create_table_with(key, sr);
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}
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else {
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ld[key] = sr;
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}
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}
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#endif
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auto loaded = reg["_LOADED"];
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if (!loaded.valid()) {
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loaded = create_table_with(key, sr);
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}
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else {
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loaded[key] = sr;
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}
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}
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template <typename Fx>
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object require_core(const std::string& key, Fx&& action, bool create_global = true) {
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optional<object> loaded = is_loaded_package(key);
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if (loaded)
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return std::move(*loaded);
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action();
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auto sr = stack::get<stack_reference>(L);
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if (create_global)
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set(key, sr);
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ensure_package(key, sr);
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return stack::pop<object>(L);
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}
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public:
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typedef global_table::iterator iterator;
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typedef global_table::const_iterator const_iterator;
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state_view(lua_State* L) :
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L(L),
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reg(L, LUA_REGISTRYINDEX),
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global(L, detail::global_) {
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}
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lua_State* lua_state() const {
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return L;
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}
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template<typename... Args>
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void open_libraries(Args&&... args) {
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static_assert(meta::all_same<lib, Args...>::value, "all types must be libraries");
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if (sizeof...(args) == 0) {
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luaL_openlibs(L);
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return;
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}
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lib libraries[1 + sizeof...(args)] = { lib::count, std::forward<Args>(args)... };
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for (auto&& library : libraries) {
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switch (library) {
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#if SOL_LUA_VERSION <= 501 && defined(SOL_LUAJIT)
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case lib::coroutine:
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#endif // luajit opens coroutine base stuff
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case lib::base:
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luaL_requiref(L, "base", luaopen_base, 1);
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lua_pop(L, 1);
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break;
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case lib::package:
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luaL_requiref(L, "package", luaopen_package, 1);
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lua_pop(L, 1);
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break;
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#if !defined(SOL_LUAJIT)
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case lib::coroutine:
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#if SOL_LUA_VERSION > 501
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luaL_requiref(L, "coroutine", luaopen_coroutine, 1);
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lua_pop(L, 1);
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#endif // Lua 5.2+ only
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break;
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#endif // Not LuaJIT
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case lib::string:
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luaL_requiref(L, "string", luaopen_string, 1);
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lua_pop(L, 1);
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break;
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case lib::table:
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luaL_requiref(L, "table", luaopen_table, 1);
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lua_pop(L, 1);
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break;
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case lib::math:
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luaL_requiref(L, "math", luaopen_math, 1);
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lua_pop(L, 1);
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break;
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case lib::bit32:
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#ifdef SOL_LUAJIT
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luaL_requiref(L, "bit32", luaopen_bit, 1);
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lua_pop(L, 1);
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#elif SOL_LUA_VERSION == 502
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luaL_requiref(L, "bit32", luaopen_bit32, 1);
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lua_pop(L, 1);
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#else
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#endif // Lua 5.2 only (deprecated in 5.3 (503))
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break;
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case lib::io:
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luaL_requiref(L, "io", luaopen_io, 1);
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lua_pop(L, 1);
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break;
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case lib::os:
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luaL_requiref(L, "os", luaopen_os, 1);
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lua_pop(L, 1);
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break;
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case lib::debug:
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luaL_requiref(L, "debug", luaopen_debug, 1);
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lua_pop(L, 1);
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break;
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case lib::ffi:
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#ifdef SOL_LUAJIT
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luaL_requiref(L, "ffi", luaopen_ffi, 1);
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lua_pop(L, 1);
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#endif
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break;
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case lib::jit:
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#ifdef SOL_LUAJIT
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luaL_requiref(L, "jit", luaopen_jit, 1);
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lua_pop(L, 1);
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#endif
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break;
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case lib::count:
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default:
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break;
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}
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}
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}
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object require(const std::string& key, lua_CFunction open_function, bool create_global = true) {
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luaL_requiref(L, key.c_str(), open_function, create_global ? 1 : 0);
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return stack::pop<object>(L);
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}
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object require_script(const std::string& key, const std::string& code, bool create_global = true) {
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return require_core(key, [this, &code]() {stack::script(L, code); }, create_global);
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}
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object require_file(const std::string& key, const std::string& filename, bool create_global = true) {
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return require_core(key, [this, &filename]() {stack::script_file(L, filename); }, create_global);
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}
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function_result script(const std::string& code) {
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int index = (::std::max)(lua_gettop(L), 1);
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stack::script(L, code);
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int returns = lua_gettop(L) - (index - 1);
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return function_result(L, index, returns);
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}
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function_result script_file(const std::string& filename) {
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int index = (::std::max)(lua_gettop(L), 1);
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stack::script_file(L, filename);
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int returns = lua_gettop(L) - index;
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return function_result(L, index, returns);
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}
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load_result load(const std::string& code) {
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load_status x = static_cast<load_status>(luaL_loadstring(L, code.c_str()));
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return load_result(L, -1, 1, 1, x);
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}
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load_result load_file(const std::string& filename) {
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load_status x = static_cast<load_status>(luaL_loadfile(L, filename.c_str()));
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return load_result(L, -1, 1, 1, x);
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}
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load_result load_buffer(const char *buff, size_t size, const char *name, const char* mode = nullptr) {
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load_status x = static_cast<load_status>(luaL_loadbufferx(L, buff, size, name, mode));
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return load_result(L, -1, 1, 1, x);
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}
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iterator begin() const {
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return global.begin();
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}
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iterator end() const {
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return global.end();
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}
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const_iterator cbegin() const {
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return global.cbegin();
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}
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const_iterator cend() const {
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return global.cend();
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}
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global_table globals() const {
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return global;
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}
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table registry() const {
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return reg;
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}
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operator lua_State* () const {
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return lua_state();
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}
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void set_panic(lua_CFunction panic) {
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lua_atpanic(L, panic);
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}
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template<typename... Args, typename... Keys>
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decltype(auto) get(Keys&&... keys) const {
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return global.get<Args...>(std::forward<Keys>(keys)...);
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}
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template<typename T, typename Key>
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decltype(auto) get_or(Key&& key, T&& otherwise) const {
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return global.get_or(std::forward<Key>(key), std::forward<T>(otherwise));
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}
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template<typename T, typename Key, typename D>
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decltype(auto) get_or(Key&& key, D&& otherwise) const {
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return global.get_or<T>(std::forward<Key>(key), std::forward<D>(otherwise));
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}
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template<typename... Args>
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state_view& set(Args&&... args) {
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global.set(std::forward<Args>(args)...);
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return *this;
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}
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template<typename T, typename... Keys>
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decltype(auto) traverse_get(Keys&&... keys) const {
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return global.traverse_get<T>(std::forward<Keys>(keys)...);
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}
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template<typename... Args>
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state_view& traverse_set(Args&&... args) {
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global.traverse_set(std::forward<Args>(args)...);
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return *this;
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}
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template<typename T>
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state_view& set_usertype(usertype<T>& user) {
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return set_usertype(usertype_traits<T>::name, user);
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}
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template<typename Key, typename T>
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state_view& set_usertype(Key&& key, usertype<T>& user) {
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global.set_usertype(std::forward<Key>(key), user);
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return *this;
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}
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template<typename Class, typename... Args>
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state_view& new_usertype(const std::string& name, Args&&... args) {
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global.new_usertype<Class>(name, std::forward<Args>(args)...);
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return *this;
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}
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template<typename Class, typename CTor0, typename... CTor, typename... Args>
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state_view& new_usertype(const std::string& name, Args&&... args) {
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global.new_usertype<Class, CTor0, CTor...>(name, std::forward<Args>(args)...);
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return *this;
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}
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template<typename Class, typename... CArgs, typename... Args>
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state_view& new_usertype(const std::string& name, constructors<CArgs...> ctor, Args&&... args) {
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global.new_usertype<Class>(name, ctor, std::forward<Args>(args)...);
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return *this;
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}
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template<typename Class, typename... Args>
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state_view& new_simple_usertype(const std::string& name, Args&&... args) {
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global.new_simple_usertype<Class>(name, std::forward<Args>(args)...);
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return *this;
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}
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template<typename Class, typename CTor0, typename... CTor, typename... Args>
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state_view& new_simple_usertype(const std::string& name, Args&&... args) {
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global.new_simple_usertype<Class, CTor0, CTor...>(name, std::forward<Args>(args)...);
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return *this;
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}
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template<typename Class, typename... CArgs, typename... Args>
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state_view& new_simple_usertype(const std::string& name, constructors<CArgs...> ctor, Args&&... args) {
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global.new_simple_usertype<Class>(name, ctor, std::forward<Args>(args)...);
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return *this;
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}
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template<bool read_only = true, typename... Args>
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state_view& new_enum(const std::string& name, Args&&... args) {
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global.new_enum<read_only>(name, std::forward<Args>(args)...);
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return *this;
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}
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template <typename Fx>
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void for_each(Fx&& fx) {
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global.for_each(std::forward<Fx>(fx));
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}
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template<typename T>
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proxy<global_table&, T> operator[](T&& key) {
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return global[std::forward<T>(key)];
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}
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template<typename T>
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proxy<const global_table&, T> operator[](T&& key) const {
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return global[std::forward<T>(key)];
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}
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template<typename Sig, typename... Args, typename Key>
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state_view& set_function(Key&& key, Args&&... args) {
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global.set_function<Sig>(std::forward<Key>(key), std::forward<Args>(args)...);
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return *this;
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}
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template<typename... Args, typename Key>
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state_view& set_function(Key&& key, Args&&... args) {
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global.set_function(std::forward<Key>(key), std::forward<Args>(args)...);
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return *this;
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}
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template <typename Name>
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table create_table(Name&& name, int narr = 0, int nrec = 0) {
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return global.create(std::forward<Name>(name), narr, nrec);
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}
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template <typename Name, typename Key, typename Value, typename... Args>
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table create_table(Name&& name, int narr, int nrec, Key&& key, Value&& value, Args&&... args) {
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return global.create(std::forward<Name>(name), narr, nrec, std::forward<Key>(key), std::forward<Value>(value), std::forward<Args>(args)...);
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}
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template <typename Name, typename... Args>
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table create_named_table(Name&& name, Args&&... args) {
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table x = global.create_with(std::forward<Args>(args)...);
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global.set(std::forward<Name>(name), x);
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return x;
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}
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table create_table(int narr = 0, int nrec = 0) {
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return create_table(lua_state(), narr, nrec);
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}
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template <typename Key, typename Value, typename... Args>
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table create_table(int narr, int nrec, Key&& key, Value&& value, Args&&... args) {
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return create_table(lua_state(), narr, nrec, std::forward<Key>(key), std::forward<Value>(value), std::forward<Args>(args)...);
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}
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template <typename... Args>
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table create_table_with(Args&&... args) {
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return create_table_with(lua_state(), std::forward<Args>(args)...);
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}
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static inline table create_table(lua_State* L, int narr = 0, int nrec = 0) {
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return global_table::create(L, narr, nrec);
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}
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template <typename Key, typename Value, typename... Args>
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static inline table create_table(lua_State* L, int narr, int nrec, Key&& key, Value&& value, Args&&... args) {
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return global_table::create(L, narr, nrec, std::forward<Key>(key), std::forward<Value>(value), std::forward<Args>(args)...);
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}
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template <typename... Args>
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static inline table create_table_with(lua_State* L, Args&&... args) {
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return global_table::create_with(L, std::forward<Args>(args)...);
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}
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};
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} // sol
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#endif // SOL_STATE_VIEW_HPP
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