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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![feature(core)]
use std::boxed::FnBox;
struct FuncContainer {
f1: fn(data: u8),
f2: extern "C" fn(data: u8),
f3: unsafe fn(data: u8),
}
struct FuncContainerOuter {
container: Box<FuncContainer>
}
struct Obj<F> where F: FnOnce() -> u32 {
closure: F,
not_closure: usize,
}
struct BoxedObj {
boxed_closure: Box<FnBox() -> u32>,
}
struct Wrapper<F> where F: FnMut() -> u32 {
wrap: Obj<F>,
}
fn func() -> u32 {
0
}
fn check_expression() -> Obj<Box<FnBox() -> u32>> {
Obj { closure: Box::new(|| 42_u32) as Box<FnBox() -> u32>, not_closure: 42 }
}
fn main() {
// test variations of function
let o_closure = Obj { closure: || 42, not_closure: 42 };
o_closure.closure(); //~ ERROR no method named `closure` found
//~^ NOTE use `(o_closure.closure)(...)` if you meant to call the function stored
o_closure.not_closure(); //~ ERROR no method named `not_closure` found
//~^ NOTE did you mean to write `o_closure.not_closure`?
let o_func = Obj { closure: func, not_closure: 5 };
o_func.closure(); //~ ERROR no method named `closure` found
//~^ NOTE use `(o_func.closure)(...)` if you meant to call the function stored
let boxed_fn = BoxedObj { boxed_closure: Box::new(func) };
boxed_fn.boxed_closure();//~ ERROR no method named `boxed_closure` found
//~^ NOTE use `(boxed_fn.boxed_closure)(...)` if you meant to call the function stored
let boxed_closure = BoxedObj { boxed_closure: Box::new(|| 42_u32) as Box<FnBox() -> u32> };
boxed_closure.boxed_closure();//~ ERROR no method named `boxed_closure` found
//~^ NOTE use `(boxed_closure.boxed_closure)(...)` if you meant to call the function stored
// test expression writing in the notes
let w = Wrapper { wrap: o_func };
w.wrap.closure();//~ ERROR no method named `closure` found
//~^ NOTE use `(w.wrap.closure)(...)` if you meant to call the function stored
w.wrap.not_closure();//~ ERROR no method named `not_closure` found
//~^ NOTE did you mean to write `w.wrap.not_closure`?
check_expression().closure();//~ ERROR no method named `closure` found
//~^ NOTE use `(check_expression().closure)(...)` if you meant to call the function stored
}
impl FuncContainerOuter {
fn run(&self) {
unsafe {
(*self.container).f1(1); //~ ERROR no method named `f1` found
//~^ NOTE use `(*self.container.f1)(...)`
(*self.container).f2(1); //~ ERROR no method named `f2` found
//~^ NOTE use `(*self.container.f2)(...)`
(*self.container).f3(1); //~ ERROR no method named `f3` found
//~^ NOTE use `(*self.container.f3)(...)`
}
}
}
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