rodolphe/rust-opensmtpd
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Add a context object the callbacks

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Many filters requires to keep a state within a session. Although it not
currently possible to do so, the callback now accept a mutable object of
type NoContext. This is the first step, the next one will be to accept
any type that implements both Clone and Default.
An other step will be to allow the user to define different callback
parameters depending on his/her needs.
This commit is contained in:
Rodolphe Breard 2019-01-12 00:17:59 +01:00
parent ea710408d4
commit 11f3712138
5 changed files with 76 additions and 42 deletions
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9
opensmtpd-derive/src/lib.rs
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@ -13,8 +13,13 @@ pub fn event(attr: TokenStream, input: TokenStream) -> TokenStream {
let fn_body = &item.block;
let fn_output = &item.decl.output;
let output = quote! {
fn #fn_name() -> opensmtpd::EventHandler {
opensmtpd::EventHandler::new(#attr, |#fn_params| #fn_output #fn_body)
// TODO: set the correct EventHandler type
fn #fn_name() -> opensmtpd::EventHandler<opensmtpd::NoContext> {
// TODO: set the correct Callback type
opensmtpd::EventHandler::new(
#attr,
opensmtpd::Callback::CtxMut(|#fn_params| #fn_output #fn_body)
)
}
};
output.into()