diff options
Diffstat (limited to 'deps/sol2/examples/source/variadic_args.cpp')
-rw-r--r-- | deps/sol2/examples/source/variadic_args.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/deps/sol2/examples/source/variadic_args.cpp b/deps/sol2/examples/source/variadic_args.cpp new file mode 100644 index 0000000..2d9e557 --- /dev/null +++ b/deps/sol2/examples/source/variadic_args.cpp @@ -0,0 +1,45 @@ +#define SOL_ALL_SAFETIES_ON 1 +#include <sol/sol.hpp> + +#include <iostream> + +int main() { + std::cout << "=== variadic_args ===" << std::endl; + + sol::state lua; + lua.open_libraries(sol::lib::base); + + // Function requires 2 arguments + // rest can be variadic, but: + // va will include everything after "a" argument, + // which means "b" will be part of the varaidic_args list too + // at position 0 + lua.set_function("v", [](int a, sol::variadic_args va, int /*b*/) { + int r = 0; + for (auto v : va) { + int value = v; // get argument out (implicit conversion) + // can also do int v = v.as<int>(); + // can also do int v = va.get<int>(i); with index i + r += value; + } + // Only have to add a, b was included from variadic_args and beyond + return r + a; + }); + + lua.script("x = v(25, 25)"); + lua.script("x2 = v(25, 25, 100, 50, 250, 150)"); + lua.script("x3 = v(1, 2, 3, 4, 5, 6)"); + // will error: not enough arguments + //lua.script("x4 = v(1)"); + + lua.script("assert(x == 50)"); + lua.script("assert(x2 == 600)"); + lua.script("assert(x3 == 21)"); + lua.script("print(x)"); // 50 + lua.script("print(x2)"); // 600 + lua.script("print(x3)"); // 21 + + std::cout << std::endl; + + return 0; +}
\ No newline at end of file |