sol2/examples/source/environment_state.cpp at develop · simoncpp/sol2

37 lines (28 loc) · 904 Bytes

#define SOL_ALL_SAFETIES_ON 1

#include <sol/sol.hpp>

#include <iostream>

int main(int, char*[]) {

std::cout << "=== environment state ===" << std::endl;

sol::state lua;

lua.open_libraries();

sol::environment my_env(lua, sol::create);

// set value, and we need to explicitly allow for

// access to "print", since a new environment hides

// everything that's not defined inside of it

// NOTE: hiding also hides library functions (!!)

// BE WARNED

my_env["var"] = 50;

my_env["print"] = lua["print"];

sol::environment my_other_env(

lua, sol::create, lua.globals());

// do not need to explicitly allow access to "print",

// since we used the "Set a fallback" version

// of the sol::environment constructor

my_other_env["var"] = 443;

// output: 50

lua.script("print(var)", my_env);

// output: 443

lua.script("print(var)", my_other_env);

std::cout << std::endl;

return 0;

}

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