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https://github.com/servo/servo.git
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317d700f5d
We keep mostly the query system. There is probably more to delete but that's a good start I think.
30 lines
776 B
Rust
30 lines
776 B
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use crate::flow::Flow;
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use std::ops::Deref;
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use std::sync::Arc;
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#[derive(Clone, Debug)]
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pub struct FlowRef(Arc<dyn Flow>);
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impl Deref for FlowRef {
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type Target = dyn Flow;
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fn deref(&self) -> &dyn Flow {
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self.0.deref()
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}
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}
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impl FlowRef {
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pub fn new(mut r: Arc<dyn Flow>) -> Self {
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assert!(Arc::get_mut(&mut r).is_some());
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FlowRef(r)
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}
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#[allow(unsafe_code)]
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pub fn deref_mut(this: &mut FlowRef) -> &mut dyn Flow {
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let ptr: *const dyn Flow = &*this.0;
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unsafe { &mut *(ptr as *mut dyn Flow) }
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}
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}
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