130 lines
2.7 KiB
Rust
130 lines
2.7 KiB
Rust
// Copyright (C) 2016-2018 Free Software Foundation, Inc.
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#![allow(dead_code)]
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#![allow(unused_variables)]
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#![allow(unused_assignments)]
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pub trait Whatever {
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fn whatever(&self) -> i32;
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fn static_i32(x: i32) -> Self;
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}
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impl Whatever for i32 {
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fn whatever(&self) -> i32 {
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*self // set breakpoint 2 here
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}
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fn static_i32(x: i32) -> i32 {
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x
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}
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}
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pub struct HasMethods {
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value: i32
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}
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impl HasMethods {
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pub fn new() -> HasMethods {
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HasMethods { value: 0 }
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}
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pub fn incr(&mut self) -> &mut HasMethods {
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self.value += 1;
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self
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}
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pub fn take(self) -> HasMethods {
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self
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}
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}
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impl Whatever for HasMethods {
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fn whatever(&self) -> i32 {
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self.value
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}
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fn static_i32(x: i32) -> HasMethods {
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HasMethods{value: x}
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}
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}
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enum SomeEnum {
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One,
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Two,
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Three(i32),
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Four{x: i32}
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}
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impl SomeEnum {
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fn value(&self) -> i32 {
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match *self {
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SomeEnum::Three(x) => x,
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SomeEnum::Four{x} => x,
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_ => 0
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}
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}
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fn mut_value(&mut self) -> i32 {
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match *self {
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SomeEnum::Three(x) => x,
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SomeEnum::Four{x} => x,
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_ => 0
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}
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}
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fn take_value(self) -> (i32, SomeEnum) {
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(match self {
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SomeEnum::Three(x) => x,
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SomeEnum::Four{x} => x,
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_ => 0
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}, self)
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}
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}
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enum SimpleEnum {
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One,
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Two,
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Three
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}
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impl SimpleEnum {
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fn value(&self) -> i32 {
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match *self {
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SimpleEnum::One => 1,
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SimpleEnum::Two => 2,
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SimpleEnum::Three => 452,
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}
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}
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}
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fn main() {
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let mut a = SomeEnum::Three(23);
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let av = a.value();
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let amv = (&mut a).mut_value();
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let atv = a.take_value();
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let b = SomeEnum::Four{x: 24};
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let bv = b.value();
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let c = SimpleEnum::Three;
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let d = c.value();
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let mut x = HasMethods::new();
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x.incr(); // set breakpoint 1 here
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(&mut x).incr();
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let y = 23i32.whatever();
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println!("{}", y);
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let z = x.take();
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}
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