mlua/src/macros.rs
2019-09-29 12:53:13 +01:00

81 lines
1.6 KiB
Rust

macro_rules! bug_msg {
($arg:expr) => {
concat!(
"rlua internal error: ",
$arg,
" (this is a bug, please file an issue)"
)
};
}
macro_rules! cstr {
($s:expr) => {
concat!($s, "\0") as *const str as *const [::std::os::raw::c_char]
as *const ::std::os::raw::c_char
};
}
macro_rules! rlua_panic {
($msg:expr) => {
panic!(bug_msg!($msg));
};
($msg:expr,) => {
rlua_panic!($msg);
};
($msg:expr, $($arg:expr),+) => {
panic!(bug_msg!($msg), $($arg),+);
};
($msg:expr, $($arg:expr),+,) => {
rlua_panic!($msg, $($arg),+);
};
}
macro_rules! rlua_assert {
($cond:expr, $msg:expr) => {
assert!($cond, bug_msg!($msg));
};
($cond:expr, $msg:expr,) => {
rlua_assert!($cond, $msg);
};
($cond:expr, $msg:expr, $($arg:expr),+) => {
assert!($cond, bug_msg!($msg), $($arg),+);
};
($cond:expr, $msg:expr, $($arg:expr),+,) => {
rlua_assert!($cond, $msg, $($arg),+);
};
}
macro_rules! rlua_debug_assert {
($cond:expr, $msg:expr) => {
debug_assert!($cond, bug_msg!($msg));
};
($cond:expr, $msg:expr,) => {
rlua_debug_assert!($cond, $msg);
};
($cond:expr, $msg:expr, $($arg:expr),+) => {
debug_assert!($cond, bug_msg!($msg), $($arg),+);
};
($cond:expr, $msg:expr, $($arg:expr),+,) => {
rlua_debug_assert!($cond, $msg, $($arg),+);
};
}
macro_rules! rlua_expect {
($res:expr, $msg:expr) => {
$res.expect(bug_msg!($msg))
};
($res:expr, $msg:expr,) => {
rlua_expect!($res, $msg)
};
}