29 lines
666 B
Rust
29 lines
666 B
Rust
use std::cell::Cell;
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use crate::factory::RenderReturn;
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use bumpalo::Bump;
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pub struct BumpFrame {
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pub bump: Bump,
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pub node: Cell<*mut RenderReturn<'static>>,
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}
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impl BumpFrame {
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pub fn new(capacity: usize) -> Self {
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let bump = Bump::with_capacity(capacity);
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Self {
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bump,
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node: Cell::new(std::ptr::null_mut()),
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}
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}
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pub fn reset(&mut self) {
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self.bump.reset();
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self.node.set(std::ptr::null_mut());
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}
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/// Creates a new lifetime out of thin air
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pub unsafe fn load_node<'b>(&self) -> &'b RenderReturn<'b> {
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unsafe { std::mem::transmute(&*self.node.get()) }
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}
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}
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