89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
#define SOL_ALL_SAFETIES_ON 1
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#include <sol/sol.hpp>
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#include <vector>
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#include <map>
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#include <iostream>
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// nested allows serialization of maps with vectors inside, and
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// vice-versa all from a nested structure of Lua tables it has
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// less control over which pieces are considered tables in Lua,
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// and which ones are considered userdata, but it covers a good
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// 90% of cases where someone wants to handle a nested table
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void demo(
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sol::nested<std::map<std::string, std::vector<std::string>>>
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src) {
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std::cout << "demo, sol::nested<...>" << std::endl;
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const auto& listmap = src.value();
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SOL_ASSERT(listmap.size() == 2);
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for (const auto& kvp : listmap) {
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const std::vector<std::string>& strings = kvp.second;
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SOL_ASSERT(strings.size() == 3);
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std::cout << "\t" << kvp.first << " = ";
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for (const auto& s : strings) {
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std::cout << "'" << s << "'"
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<< " ";
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}
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std::cout << std::endl;
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}
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std::cout << std::endl;
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}
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// This second demo is equivalent to the first
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// Nota bene the signature here
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// Every container-type that's meant to be
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// a table must be wrapped in `sol::as_table_t`
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// it's verbose, so feel free to use typedefs to make it easy on
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// you you can mix which parts are considered tables from Lua,
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// and which parts are considered other kinds of types, such as
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// userdata and the like
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void demo_explicit(sol::as_table_t<std::map<std::string,
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sol::as_table_t<std::vector<std::string>>>>
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src) {
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std::cout << "demo, explicit sol::as_table_t<...>"
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<< std::endl;
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// Have to access the "source" member variable for
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// as_table_t
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const auto& listmap = src.value();
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SOL_ASSERT(listmap.size() == 2);
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for (const auto& kvp : listmap) {
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// Have to access the internal "source" for the inner
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// as_table_t, as well
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const std::vector<std::string>& strings
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= kvp.second.value();
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SOL_ASSERT(strings.size() == 3);
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std::cout << "\t" << kvp.first << " = ";
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for (const auto& s : strings) {
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std::cout << "'" << s << "'"
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<< " ";
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}
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std::cout << std::endl;
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}
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std::cout << std::endl;
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}
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int main(int, char**) {
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std::cout << "=== containers retrieved from lua tables ==="
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<< std::endl;
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sol::state lua;
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// bind the function
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lua.set_function("f", &demo);
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lua.set_function("g", &demo_explicit);
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// Call it with a table that has string sequences set to
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// distinct keys
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lua.script(R"(
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t = {
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key1 = {'hello', 'there', 'world'},
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key2 = {'bark', 'borf', 'woof'}
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}
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f(t)
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g(t)
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)");
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std::cout << std::endl;
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return 0;
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}
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