exp.rs - mozsearch

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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or

// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license

// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your

// option. This file may not be copied, modified, or distributed

// except according to those terms.

#[macro_export]

macro_rules! experimental_api {

    ( $n:ident ( $( $a:ident : $t:ty ),* $(,)? ) ) => {

        #[expect(non_snake_case, reason = "Inherent in macro use.")]

        #[allow(clippy::allow_attributes, clippy::too_many_arguments, reason = "Inherent in macro use.")]

        #[allow(clippy::allow_attributes, clippy::missing_safety_doc, reason = "Inherent in macro use.")]

        #[allow(clippy::allow_attributes, clippy::missing_errors_doc, reason = "Inherent in macro use.")]

        pub unsafe fn $n ( $( $a : $t ),* ) -> Result<(), $crate::err::Error> {

            struct ExperimentalAPI(*mut std::ffi::c_void);

            unsafe impl Send for ExperimentalAPI {}

            unsafe impl Sync for ExperimentalAPI {}

            static EXP_API: ::std::sync::OnceLock<ExperimentalAPI> = ::std::sync::OnceLock::new();

            let f = EXP_API.get_or_init(|| {

                const EXP_FUNCTION: &str = stringify!($n);

                let Ok(n) = ::std::ffi::CString::new(EXP_FUNCTION) else { return ExperimentalAPI(std::ptr::null_mut()); };

                ExperimentalAPI($crate::ssl::SSL_GetExperimentalAPI(n.as_ptr()))

});

            if f.0.is_null() {

                return Err($crate::err::Error::Internal);

            let f: unsafe extern "C" fn( $( $t ),* ) -> $crate::ssl::SECStatus = ::std::mem::transmute(f.0);

            let rv = f( $( $a ),* );

            $crate::err::secstatus_to_res(rv)

};