33 lines
653 B
Rust
33 lines
653 B
Rust
//! Used by validators to run events on exit.
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use std::fmt;
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#[derive(Default)]
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pub struct Exit {
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exited: bool,
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exits: Vec<Box<dyn FnOnce() + Send + Sync>>,
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}
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impl Exit {
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pub fn register_exit(&mut self, exit: Box<dyn FnOnce() + Send + Sync>) {
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if self.exited {
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exit();
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} else {
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self.exits.push(exit);
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}
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}
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pub fn exit(&mut self) {
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self.exited = true;
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for exit in self.exits.drain(..) {
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exit();
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}
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}
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}
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impl fmt::Debug for Exit {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{} exits", self.exits.len())
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}
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}
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