mirror of
https://github.com/ThePhD/sol2.git
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54bcda140c
add constructor_handler in same vein of handlers add argument_handler in same vein of handlers rewrite env_t checkers
100 lines
4.3 KiB
C++
100 lines
4.3 KiB
C++
// The MIT License (MIT)
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// Copyright (c) 2013-2017 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_ERROR_HANDLER_HPP
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#define SOL_ERROR_HANDLER_HPP
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#include "types.hpp"
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namespace sol {
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inline int type_panic_string(lua_State* L, int index, type expected, type actual, const std::string& message = "") noexcept(false) {
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const char* err = message.empty() ? "stack index %d, expected %s, received %s" : "stack index %d, expected %s, received %s with message %s";
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return luaL_error(L, err, index,
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expected == type::poly ? "anything" : lua_typename(L, static_cast<int>(expected)),
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actual == type::poly ? "anything" : lua_typename(L, static_cast<int>(actual)),
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message.c_str()
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);
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}
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inline int type_panic_c_str(lua_State* L, int index, type expected, type actual, const char* message = nullptr) noexcept(false) {
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const char* err = message == nullptr || (std::char_traits<char>::length(message) == 0) ? "stack index %d, expected %s, received %s" : "stack index %d, expected %s, received %s with message %s";
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return luaL_error(L, err, index,
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expected == type::poly ? "anything" : lua_typename(L, static_cast<int>(expected)),
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actual == type::poly ? "anything" : lua_typename(L, static_cast<int>(actual)),
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message
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);
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}
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struct type_panic_t {
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int operator()(lua_State* L, int index, type expected, type actual) const noexcept(false) {
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return type_panic_c_str(L, index, expected, actual, nullptr);
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}
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int operator()(lua_State* L, int index, type expected, type actual, const char* message) const noexcept(false) {
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return type_panic_c_str(L, index, expected, actual, message);
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}
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int operator()(lua_State* L, int index, type expected, type actual, const std::string& message) const noexcept(false) {
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return type_panic_string(L, index, expected, actual, message);
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}
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};
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const type_panic_t type_panic = {};
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struct constructor_handler {
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int operator()(lua_State* L, int index, type expected, type actual, const std::string& message) const noexcept(false) {
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return type_panic_string(L, index, expected, actual, message + " (type check failed in constructor)");
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}
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};
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struct argument_handler {
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int operator()(lua_State* L, int index, type expected, type actual, const std::string& message) const noexcept(false) {
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return type_panic_string(L, index, expected, actual, message + " (bad argument to variable or function call)");
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}
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};
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// Specify this function as the handler for lua::check if you know there's nothing wrong
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inline int no_panic(lua_State*, int, type, type, const char* = nullptr) noexcept {
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return 0;
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}
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inline void type_error(lua_State* L, int expected, int actual) noexcept(false) {
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luaL_error(L, "expected %s, received %s", lua_typename(L, expected), lua_typename(L, actual));
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}
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inline void type_error(lua_State* L, type expected, type actual) noexcept(false) {
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type_error(L, static_cast<int>(expected), static_cast<int>(actual));
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}
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inline void type_assert(lua_State* L, int index, type expected, type actual) noexcept(false) {
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if (expected != type::poly && expected != actual) {
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type_panic_c_str(L, index, expected, actual, nullptr);
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}
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}
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inline void type_assert(lua_State* L, int index, type expected) {
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type actual = type_of(L, index);
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type_assert(L, index, expected, actual);
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}
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} // sol
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#endif // SOL_ERROR_HANDLER_HPP
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