Sha256: f764aa2af0ff14d466c94ef1e91fd4595a2243488883c89c5fa284f8f7a8ae8c
Contents?: true
Size: 947 Bytes
Versions: 6
Compression:
Stored size: 947 Bytes
Contents
#[macro_use]
extern crate rb_sys;
use rb_sys::{rb_define_module, rb_define_module_function, rb_utf8_str_new, VALUE};
use std::ffi::CString;
ruby_extension!();
#[no_mangle]
unsafe extern "C" fn say_hello(_klass: VALUE) -> VALUE {
let cstr = CString::new("Hello world!").unwrap();
rb_utf8_str_new(cstr.as_ptr(), 12)
}
#[allow(non_snake_case)]
#[no_mangle]
pub extern "C" fn Init_custom_name() {
let name = CString::new("CustomName").unwrap();
let function_name = CString::new("say_hello").unwrap();
// bindgen does not properly detect the arity of the ruby callback function, so we have to transmute
let callback = unsafe {
std::mem::transmute::<unsafe extern "C" fn(VALUE) -> VALUE, unsafe extern "C" fn() -> VALUE>(
say_hello,
)
};
let klass = unsafe { rb_define_module(name.as_ptr()) };
unsafe { rb_define_module_function(klass, function_name.as_ptr(), Some(callback), 0) }
}
Version data entries
6 entries across 6 versions & 1 rubygems