Function rustc_builtin_macros::env::expand_option_env
source · pub fn expand_option_env<'cx>(
cx: &'cx mut ExtCtxt<'_>,
sp: Span,
tts: TokenStream
) -> Box<dyn MacResult + 'cx>pub fn expand_option_env<'cx>(
cx: &'cx mut ExtCtxt<'_>,
sp: Span,
tts: TokenStream
) -> Box<dyn MacResult + 'cx>