feat: add events function to set multiple event filter (#1607)

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Matthias Seitz 2022-08-19 17:20:44 +02:00 committed by GitHub
parent 3681099af3
commit 4f6ccf70b3
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1 changed files with 15 additions and 1 deletions

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@ -254,13 +254,21 @@ impl Filter {
self
}
/// given the event in string form, it hashes it and adds it to the topics to monitor
/// Given the event signature in string form, it hashes it and adds it to the topics to monitor
#[must_use]
pub fn event(self, event_name: &str) -> Self {
let hash = H256::from(keccak256(event_name.as_bytes()));
self.topic0(hash)
}
/// Hashes all event signatures and sets them as array to topic0
#[must_use]
pub fn events(self, events: impl IntoIterator<Item = impl AsRef<[u8]>>) -> Self {
let events =
events.into_iter().map(|e| H256::from(keccak256(e.as_ref()))).collect::<Vec<_>>();
self.topic0(events)
}
/// Sets topic0 (the event name for non-anonymous events)
#[must_use]
pub fn topic0<T: Into<Topic>>(mut self, topic: T) -> Self {
@ -544,6 +552,12 @@ impl From<H256> for Topic {
}
}
impl From<Vec<H256>> for ValueOrArray<H256> {
fn from(src: Vec<H256>) -> Self {
ValueOrArray::Array(src)
}
}
impl From<ValueOrArray<H256>> for Topic {
fn from(src: ValueOrArray<H256>) -> Self {
match src {