Method DoEval

emmy_debugger/src/debugger/emmy_debugger.cpp:929–1041

host thread

// host thread
bool Debugger::DoEval(std::shared_ptr<EvalContext> evalContext) {
	if (!currentL || !evalContext) {
		return false;
	}

	auto L = currentL;

	int innerLevel = evalContext->stackLevel;

	while (L != nullptr) {
		int level = LastLevel(L);
		if (innerLevel > level) {
			innerLevel -= level;
			L = manager->extension.QueryParentThread(L);
		} else {
			break;
		}
	}

	if (L == nullptr) {
		return false;
	}

	//auto* const L = L;
	// From "cacheId"
	if (evalContext->cacheId > 0) {
		lua_getfield(L, LUA_REGISTRYINDEX, CACHE_TABLE_NAME);// 1: cacheTable|nil
		if (lua_type(L, -1) == LUA_TTABLE) {
			lua_getfield(L, -1, std::to_string(evalContext->cacheId).c_str());// 1: cacheTable, 2: value
			SetVariableArena(evalContext->result.GetArena());
			GetVariable(L, evalContext->result, -1, evalContext->depth);
			ClearVariableArenaRef();
			lua_pop(L, 2);
			return true;
		}
		lua_pop(L, 1);
	}
	// LOAD AS "return expr"
	std::string statement = "return ";
	if (evalContext->setValue) {
		statement = evalContext->expr + " = " + evalContext->value + " return " + evalContext->expr;
	} else {
		statement.append(evalContext->expr);
	}

	// 如果是 aaa:bbbb 则纠正为aaa.bbbb
	int r = luaL_loadstring(L, statement.c_str());
	if (r == LUA_ERRSYNTAX) {
		// 尝试将 : 替换为 . 后重新加载
		std::string correctedExpr = evalContext->expr;
		size_t colonPos = correctedExpr.find(':');
		if (colonPos != std::string::npos) {
			correctedExpr[colonPos] = '.';
			std::string correctedStatement = "return ";
			if (evalContext->setValue) {
				correctedStatement = correctedExpr + " = " + evalContext->value + " return " + correctedExpr;
			} else {
				correctedStatement.append(correctedExpr);