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events: Refactor macro code

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Use Option::zip which was not possible with the previous MSRV.
This commit is contained in:
Jonas Platte 2021-05-20 21:03:51 +02:00
parent e622803679
commit de737f30e7
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GPG Key ID: CC154DE0E30B7C67
1 changed files with 14 additions and 21 deletions
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35
crates/ruma-events-macros/src/event_enum.rs
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@ -583,14 +583,7 @@ fn expand_redacted_enum(
if let EventKind::State | EventKind::Message = kind {
let ident = format_ident!("AnyPossiblyRedacted{}", kind.to_event_ident(var)?);
// FIXME: Use Option::zip once MSRV >= 1.46
let (regular_enum_ident, redacted_enum_ident) = match inner_enum_idents(kind, var) {
(Some(regular_enum_ident), Some(redacted_enum_ident)) => {
(regular_enum_ident, redacted_enum_ident)
}
_ => return None,
};
let (regular_enum_ident, redacted_enum_ident) = inner_enum_idents(kind, var)?;
Some(quote! {
/// An enum that holds either regular un-redacted events or redacted events.
@ -628,7 +621,7 @@ fn expand_redacted_enum(
}
fn generate_event_idents(kind: &EventKind, var: &EventKindVariation) -> Option<(Ident, Ident)> {
Some((kind.to_event_ident(var)?, kind.to_event_enum_ident(var)?))
kind.to_event_ident(var).zip(kind.to_event_enum_ident(var))
}
fn generate_redacted_fields(
@ -800,22 +793,22 @@ fn accessor_methods(
})
}
fn inner_enum_idents(kind: &EventKind, var: &EventKindVariation) -> (Option<Ident>, Option<Ident>) {
match var {
EventKindVariation::Full => {
(kind.to_event_enum_ident(var), kind.to_event_enum_ident(&EventKindVariation::Redacted))
}
fn inner_enum_idents(kind: &EventKind, var: &EventKindVariation) -> Option<(Ident, Ident)> {
Some(match var {
EventKindVariation::Full => (
kind.to_event_enum_ident(var)?,
kind.to_event_enum_ident(&EventKindVariation::Redacted)?,
),
EventKindVariation::Sync => (
kind.to_event_enum_ident(var),
kind.to_event_enum_ident(&EventKindVariation::RedactedSync),
kind.to_event_enum_ident(var)?,
kind.to_event_enum_ident(&EventKindVariation::RedactedSync)?,
),
EventKindVariation::Stripped => (
kind.to_event_enum_ident(var),
kind.to_event_enum_ident(&EventKindVariation::RedactedStripped),
kind.to_event_enum_ident(var)?,
kind.to_event_enum_ident(&EventKindVariation::RedactedStripped)?,
),
EventKindVariation::Initial => (kind.to_event_enum_ident(var), None),
_ => (None, None),
}
_ => return None,
})
}
/// Redacted events do NOT generate `content` or `prev_content` methods like