b22a714840
The JIT that runs makepad apps from source: lexer, front end, type checker, lazy borrow checker (Gandalf; `--check-first` opts in), codegen, session and warm/cold caches keyed by compiler stamp, provided crates bound late, startup images, live patching. User-facing name is `makepad run` (binary `makepad`, MAKEPAD_RUN_* env, ~/.makepad-run); libs/relax stays the internal library name. `makepad check` reports rustc-style diagnostics with rustc error codes and checks a whole workspace (`--workspace`). Runs on macOS, Linux, Windows and Android. makepad-remote: one tool schema for apps and the WM (app/1): grabs, captures, traces, frame profiles and tweaks. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
31 lines
1.1 KiB
Rust
31 lines
1.1 KiB
Rust
// F36: calls on any place of type dyn Fn* (through a raw-pointer deref too) go through the
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// vtable; fn pointers are Clone (builtin impls)
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struct S { k: u32 }
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impl S {
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fn run(&self, g: *const dyn Fn(&S, u32) -> u32, x: u32) -> u32 { unsafe { (*g)(self, x) } }
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}
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#[test]
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fn raw_dyn_fn_call() {
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let add = 5u32;
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let f: Box<dyn Fn(&S, u32) -> u32> = Box::new(move |s: &S, x: u32| s.k * x + add);
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let p: *const dyn Fn(&S, u32) -> u32 = &*f;
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let s = S { k: 3 };
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assert_eq!(s.run(p, 2), 11);
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assert_eq!((*f)(&s, 1), 8);
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let r: &dyn Fn(&S, u32) -> u32 = &*f;
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assert_eq!((*r)(&s, 0), 5);
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let bm: Box<dyn FnMut(u32) -> u32> = Box::new(move |x: u32| x + add);
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let m: *mut dyn FnMut(u32) -> u32 = Box::into_raw(bm);
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assert_eq!(unsafe { (*m)(1) }, 6);
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unsafe { drop(Box::from_raw(m)) };
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}
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fn tw(x: u32) -> u32 { x * 2 }
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#[test]
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fn fn_ptr_clone() {
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let f: fn(u32) -> u32 = tw;
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let g = f.clone();
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let v = vec![f, g];
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let mut w: Vec<fn(u32) -> u32> = Vec::new();
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w.extend_from_slice(&v);
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assert_eq!(w[1](4), 8);
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}
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