Method GetStacks

emmy_debugger/src/debugger/emmy_debugger.cpp:174–261

}

bool Debugger::GetStacks(std::vector<Stack> &stacks) {
	if (!currentL) {
		return false;
	}

	auto prevCurrentL = currentL;
	auto L = currentL;

	int totalLevel = 0;
	while (true) {
		int level = 0;
		while (true) {
			lua_Debug ar{};
			if (!lua_getstack(L, level, &ar)) {
				break;
			}
			if (!lua_getinfo(L, "nSlu", &ar)) {
				continue;
			}
			// C++ 17 only return T&
			stacks.emplace_back();
			auto &stack = stacks.back();
			stack.file = GetFile(&ar);
			stack.functionName = getDebugName(&ar) == nullptr ? "" : getDebugName(&ar);
			stack.level = totalLevel++;
			stack.line = getDebugCurrentLine(&ar);

			// get variables
			{
				for (int i = 1;; i++) {
					const char *name = lua_getlocal(L, &ar, i);
					if (name == nullptr) {
						break;
					}
					if (name[0] == '(') {
						lua_pop(L, 1);
						continue;
					}

					// add local variable
					auto var = stack.variableArena->Alloc();
					var->name = name;
					SetVariableArena(stack.variableArena.get());
					GetVariable(L, var, -1, 1);
					ClearVariableArenaRef();
					lua_pop(L, 1);
					stack.localVariables.push_back(var);
				}

				if (lua_getinfo(L, "f", &ar)) {
					const int fIdx = lua_gettop(L);
					for (int i = 1;; i++) {
						const char *name = lua_getupvalue(L, fIdx, i);
						if (!name) {
							break;
						}

						// add up variable