64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
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#define SOL_ALL_SAFETIES_ON 1
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#include <sol/sol.hpp>
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#include <iostream>
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void test_environment(std::string key,
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const sol::environment& env, const sol::state_view& lua) {
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sol::optional<int> maybe_env_a = env[key];
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sol::optional<int> maybe_global_a = lua[key];
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if (maybe_global_a) {
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std::cout << "\t'" << key << "' is "
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<< maybe_global_a.value()
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<< " in the global environment" << std::endl;
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}
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else {
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std::cout
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<< "\t'" << key
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<< "' does not exist in the global environment"
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<< std::endl;
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}
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if (maybe_env_a) {
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std::cout << "\t'" << key << "' is "
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<< maybe_env_a.value()
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<< " in target environment" << std::endl;
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}
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else {
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std::cout << "\t'" << key
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<< "' does not exist in target environment"
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<< std::endl;
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}
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}
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int main(int, char**) {
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std::cout << "=== environments ===" << std::endl;
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sol::state lua;
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// A global variable to see if we can "fallback" into it
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lua["b"] = 2142;
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// Create a new environment
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sol::environment plain_env(lua, sol::create);
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// Use it
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lua.script("a = 24", plain_env);
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std::cout << "-- target: plain_env" << std::endl;
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test_environment("a", plain_env, lua);
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test_environment("b", plain_env, lua);
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std::cout << std::endl;
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// Create an environment with a fallback
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sol::environment env_with_fallback(
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lua, sol::create, lua.globals());
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// Use it
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lua.script("a = 56", env_with_fallback);
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std::cout << "-- target: env_with_fallback (fallback is "
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"global table)"
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<< std::endl;
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test_environment("a", env_with_fallback, lua);
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test_environment("b", env_with_fallback, lua);
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std::cout << std::endl;
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return 0;
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}
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