forked from mia/Aegisub
143 lines
4 KiB
C++
143 lines
4 KiB
C++
// Copyright (c) 2012, 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/log.h>
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#include <lua.hpp>
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#include <libaegisub/fs.h>
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#include <string>
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#include <type_traits>
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#include <wx/string.h>
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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) { lua_pushinteger(L, value); }
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inline void push_value(lua_State *L, wxString const& value) {
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lua_pushstring(L, value.utf8_str());
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}
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inline void push_value(lua_State *L, agi::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_pushstring(L, value.c_str());
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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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inline wxString get_wxstring(lua_State *L, int idx) {
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return wxString::FromUTF8(lua_tostring(L, idx));
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}
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inline wxString check_wxstring(lua_State *L, int idx) {
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return wxString::FromUTF8(luaL_checkstring(L, idx));
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}
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inline std::string get_string_or_default(lua_State *L, int idx) {
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const char *str = lua_tostring(L, idx);
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if (!str)
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str = "<not a string>";
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return str;
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}
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inline std::string get_global_string(lua_State *L, const char *name) {
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lua_getglobal(L, name);
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std::string ret;
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if (lua_isstring(L, -1))
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ret = lua_tostring(L, -1);
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lua_pop(L, 1);
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return ret;
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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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#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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int top = lua_gettop(L);
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if (top - additional != startstack) {
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LOG_D("automation/lua") << "lua stack size mismatch.";
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dump();
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assert(top - additional == startstack);
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}
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}
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void dump() {
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int top = lua_gettop(L);
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LOG_D("automation/lua/stackdump") << "--- dumping lua stack...";
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for (int i = top; i > 0; i--) {
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lua_pushvalue(L, i);
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std::string type(lua_typename(L, lua_type(L, -1)));
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if (lua_isstring(L, i))
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LOG_D("automation/lua/stackdump") << type << ": " << lua_tostring(L, -1);
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else
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LOG_D("automation/lua/stackdump") << type;
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lua_pop(L, 1);
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}
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LOG_D("automation/lua") << "--- end dump";
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}
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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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