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https://github.com/scp-fs2open/fs2open.github.com.git
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asarium
ebcf686cf7
This adds a Lua API for representing asynchronous operations and running coroutines based on those operations comfortably. This is very similar to features other languages have introduced such as C# or JavaScript. In fact, the whole "promise" thing is derived from how JavaScript represents these operations. This is the initial and very basic system for supporting async coroutines in Lua. There is no native support for running these operations at specific points (they run whenever the awaited promise resolved) or making sure they do not leak through different game states.
65 lines
1.2 KiB
C++
65 lines
1.2 KiB
C++
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#include "LuaUtil.h"
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namespace {
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const char* mainStateRefName = "_lua_mainthread";
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}
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namespace luacpp {
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namespace util {
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const char* getValueName(ValueType type)
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{
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switch (type) {
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case ValueType::NONE:
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return "none";
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case ValueType::NIL:
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return "nil";
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case ValueType::BOOLEAN:
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return "boolean";
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case ValueType::LIGHTUSERDATA:
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return "light userdata";
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case ValueType::STRING:
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return "string";
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case ValueType::NUMBER:
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return "number";
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case ValueType::TABLE:
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return "table";
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case ValueType::FUNCTION:
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return "function";
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case ValueType::USERDATA:
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return "userdata";
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case ValueType::THREAD:
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return "thread";
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default:
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return "unknown";
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}
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}
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void initializeLuaSupportLib(lua_State* L)
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{
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auto mainThread = lua_pushthread(L);
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Assertion(mainThread, "Must be called with the main thread as the parameter!");
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lua_setfield(L, LUA_REGISTRYINDEX, mainStateRefName);
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}
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lua_State* getMainThread(lua_State* L)
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{
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if (lua_pushthread(L)) {
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// State is the main thread, just return that
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lua_pop(L, 1);
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return L;
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}
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lua_pushstring(L, mainStateRefName);
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lua_rawget(L, LUA_REGISTRYINDEX);
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auto state = lua_tothread(L, -1);
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lua_pop(L, 1);
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return state;
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}
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} // namespace util
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} // namespace luacpp
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