mirror of https://github.com/odrling/Aegisub
123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
// Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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#include <libaegisub/fs.h>
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#include <lua.h>
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#include <lauxlib.h>
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#include <string>
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#include <type_traits>
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namespace agi { namespace lua {
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inline void push_value(lua_State *L, bool value) { lua_pushboolean(L, value); }
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inline void push_value(lua_State *L, const char *value) { lua_pushstring(L, value); }
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inline void push_value(lua_State *L, double value) { lua_pushnumber(L, value); }
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inline void push_value(lua_State *L, int value) { lua_pushinteger(L, value); }
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inline void push_value(lua_State *L, void *p) { lua_pushlightuserdata(L, p); }
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template<typename Integer>
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typename std::enable_if<std::is_integral<Integer>::value>::type
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push_value(lua_State *L, Integer value) {
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lua_pushinteger(L, static_cast<lua_Integer>(value));
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}
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inline void push_value(lua_State *L, fs::path const& value) {
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lua_pushstring(L, value.string().c_str());
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}
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inline void push_value(lua_State *L, std::string const& value) {
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lua_pushlstring(L, value.c_str(), value.size());
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}
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inline void push_value(lua_State *L, lua_CFunction value) {
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if (lua_type(L, -2) == LUA_TUSERDATA) {
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lua_pushvalue(L, -2);
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lua_pushcclosure(L, value, 1);
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}
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else
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lua_pushcclosure(L, value, 0);
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}
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template<typename T>
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inline void set_field(lua_State *L, const char *name, T value) {
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push_value(L, value);
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lua_setfield(L, -2, name);
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}
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std::string get_string_or_default(lua_State *L, int idx);
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std::string get_string(lua_State *L, int idx);
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std::string check_string(lua_State *L, int idx);
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std::string get_global_string(lua_State *L, const char *name);
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template<typename T, typename... Args>
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T *make(lua_State *L, const char *mt, Args&&... args) {
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auto obj = static_cast<T*>(lua_newuserdata(L, sizeof(T)));
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new(obj) T(std::forward<Args>(args)...);
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luaL_getmetatable(L, mt);
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lua_setmetatable(L, -2);
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return obj;
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}
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template<typename T>
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T& get(lua_State *L, int idx, const char *mt) {
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return *static_cast<T *>(luaL_checkudata(L, idx, mt));
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}
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struct LuaForEachBreak {};
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template<typename Func>
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void lua_for_each(lua_State *L, Func&& func) {
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lua_pushnil(L); // initial key
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while (lua_next(L, -2)) {
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try {
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func();
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}
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catch (LuaForEachBreak) {
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lua_pop(L, 1);
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break;
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}
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lua_pop(L, 1); // pop value, leave key
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}
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lua_pop(L, 1); // pop table
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}
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int add_stack_trace(lua_State *L);
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#ifdef _DEBUG
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struct LuaStackcheck {
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lua_State *L;
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int startstack;
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void check_stack(int additional);
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void dump();
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LuaStackcheck(lua_State *L) : L(L), startstack(lua_gettop(L)) { }
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~LuaStackcheck() { check_stack(0); }
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};
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#else
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struct LuaStackcheck {
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void check_stack(int) { }
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void dump() { }
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LuaStackcheck(lua_State*) { }
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};
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#endif
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} }
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