DianQK
535435a4cf
The MergeFunctionsPass in LLVM merges identical functions (https://rust.godbolt.org/z/3nnr9nMne), resulting in the same function addresses.
45 lines
1.1 KiB
Rust
45 lines
1.1 KiB
Rust
use crate::{AtomId, AtomRoot, Readable, Writable};
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pub struct Atom<T>(pub fn(AtomBuilder) -> T);
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pub struct AtomBuilder;
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impl<V> Readable<V> for &'static Atom<V> {
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fn read(&self, _root: AtomRoot) -> Option<V> {
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todo!()
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}
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fn init(&self) -> V {
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self.0(AtomBuilder)
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}
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fn unique_id(&self) -> AtomId {
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*self as *const Atom<V> as *const ()
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}
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}
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impl<V> Writable<V> for &'static Atom<V> {
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fn write(&self, _root: AtomRoot, _value: V) {
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todo!()
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}
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}
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#[test]
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fn atom_compiles() {
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static TEST_ATOM: Atom<&str> = Atom(|_| "hello");
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dbg!((&TEST_ATOM).init());
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}
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#[test]
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fn atom_is_unique() {
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static TEST_ATOM_1: Atom<&str> = Atom(|_| "hello");
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static TEST_ATOM_2: Atom<&str> = Atom(|_| "hello");
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assert_eq!((&TEST_ATOM_1).unique_id(), (&TEST_ATOM_1).unique_id());
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assert_ne!((&TEST_ATOM_1).unique_id(), (&TEST_ATOM_2).unique_id());
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}
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#[test]
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fn atom_is_unique_2() {
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struct S(String);
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static TEST_ATOM_1: Atom<Vec<S>> = Atom(|_| Vec::new());
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static TEST_ATOM_2: Atom<Vec<String>> = Atom(|_| Vec::new());
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assert_ne!((&TEST_ATOM_1).unique_id(), (&TEST_ATOM_2).unique_id());
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}
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