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| <section id='main' class="content"><pre class="line-numbers"><span id="1"> 1</span> |
| <span id="2"> 2</span> |
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| </pre><pre class="rust "> |
| <span class="comment">// Copyright 2014 The Rust Project Developers. See the COPYRIGHT</span> |
| <span class="comment">// file at the top-level directory of this distribution and at</span> |
| <span class="comment">// http://rust-lang.org/COPYRIGHT.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span> |
| <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span> |
| <span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span> |
| <span class="comment">// option. This file may not be copied, modified, or distributed</span> |
| <span class="comment">// except according to those terms.</span> |
| |
| <span class="doccomment">//! A typesafe bitmask flag generator.</span> |
| |
| <span class="attribute">#<span class="op">!</span>[<span class="ident">no_std</span>]</span> |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_use</span>]</span> |
| <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">std</span>; |
| |
| <span class="comment">// Re-export libstd/libcore using an alias so that the macros can work in no_std</span> |
| <span class="comment">// crates while remaining compatible with normal crates.</span> |
| <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">private_in_public</span>)]</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">core</span> <span class="kw">as</span> <span class="ident">__core</span>; |
| |
| <span class="doccomment">/// The `bitflags!` macro generates a `struct` that holds a set of C-style</span> |
| <span class="doccomment">/// bitmask flags. It is useful for creating typesafe wrappers for C APIs.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The flags should only be defined for integer types, otherwise unexpected</span> |
| <span class="doccomment">/// type errors may occur at compile time.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Example</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// ```{.rust}</span> |
| <span class="doccomment">/// #[macro_use]</span> |
| <span class="doccomment">/// extern crate bitflags;</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// bitflags! {</span> |
| <span class="doccomment">/// flags Flags: u32 {</span> |
| <span class="doccomment">/// const FLAG_A = 0b00000001,</span> |
| <span class="doccomment">/// const FLAG_B = 0b00000010,</span> |
| <span class="doccomment">/// const FLAG_C = 0b00000100,</span> |
| <span class="doccomment">/// const FLAG_ABC = FLAG_A.bits</span> |
| <span class="doccomment">/// | FLAG_B.bits</span> |
| <span class="doccomment">/// | FLAG_C.bits,</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// fn main() {</span> |
| <span class="doccomment">/// let e1 = FLAG_A | FLAG_C;</span> |
| <span class="doccomment">/// let e2 = FLAG_B | FLAG_C;</span> |
| <span class="doccomment">/// assert_eq!((e1 | e2), FLAG_ABC); // union</span> |
| <span class="doccomment">/// assert_eq!((e1 & e2), FLAG_C); // intersection</span> |
| <span class="doccomment">/// assert_eq!((e1 - e2), FLAG_A); // set difference</span> |
| <span class="doccomment">/// assert_eq!(!e2, FLAG_A); // set complement</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// ```</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The generated `struct`s can also be extended with type and trait</span> |
| <span class="doccomment">/// implementations:</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// ```{.rust}</span> |
| <span class="doccomment">/// #[macro_use]</span> |
| <span class="doccomment">/// extern crate bitflags;</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// use std::fmt;</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// bitflags! {</span> |
| <span class="doccomment">/// flags Flags: u32 {</span> |
| <span class="doccomment">/// const FLAG_A = 0b00000001,</span> |
| <span class="doccomment">/// const FLAG_B = 0b00000010,</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// impl Flags {</span> |
| <span class="doccomment">/// pub fn clear(&mut self) {</span> |
| <span class="doccomment">/// self.bits = 0; // The `bits` field can be accessed from within the</span> |
| <span class="doccomment">/// // same module where the `bitflags!` macro was invoked.</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// impl fmt::Display for Flags {</span> |
| <span class="doccomment">/// fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {</span> |
| <span class="doccomment">/// write!(f, "hi!")</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// fn main() {</span> |
| <span class="doccomment">/// let mut flags = FLAG_A | FLAG_B;</span> |
| <span class="doccomment">/// flags.clear();</span> |
| <span class="doccomment">/// assert!(flags.is_empty());</span> |
| <span class="doccomment">/// assert_eq!(format!("{}", flags), "hi!");</span> |
| <span class="doccomment">/// assert_eq!(format!("{:?}", FLAG_A | FLAG_B), "FLAG_A | FLAG_B");</span> |
| <span class="doccomment">/// assert_eq!(format!("{:?}", FLAG_B), "FLAG_B");</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// ```</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Visibility</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The generated struct and its associated flag constants are not exported</span> |
| <span class="doccomment">/// out of the current module by default. A definition can be exported out of</span> |
| <span class="doccomment">/// the current module by adding `pub` before `flags`:</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// ```{.rust},ignore</span> |
| <span class="doccomment">/// #[macro_use]</span> |
| <span class="doccomment">/// extern crate bitflags;</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// mod example {</span> |
| <span class="doccomment">/// bitflags! {</span> |
| <span class="doccomment">/// pub flags Flags1: u32 {</span> |
| <span class="doccomment">/// const FLAG_A = 0b00000001,</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// bitflags! {</span> |
| <span class="doccomment">/// flags Flags2: u32 {</span> |
| <span class="doccomment">/// const FLAG_B = 0b00000010,</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// fn main() {</span> |
| <span class="doccomment">/// let flag1 = example::FLAG_A;</span> |
| <span class="doccomment">/// let flag2 = example::FLAG_B; // error: const `FLAG_B` is private</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// ```</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Attributes</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Attributes can be attached to the generated `struct` by placing them</span> |
| <span class="doccomment">/// before the `flags` keyword.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Trait implementations</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The `Copy`, `Clone`, `PartialEq`, `Eq`, `PartialOrd`, `Ord` and `Hash`</span> |
| <span class="doccomment">/// traits automatically derived for the `struct` using the `derive` attribute.</span> |
| <span class="doccomment">/// Additional traits can be derived by providing an explicit `derive`</span> |
| <span class="doccomment">/// attribute on `flags`.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The `Extend` and `FromIterator` traits are implemented for the `struct`,</span> |
| <span class="doccomment">/// too: `Extend` adds the union of the instances of the `struct` iterated over,</span> |
| <span class="doccomment">/// while `FromIterator` calculates the union.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The `Debug` trait is also implemented by displaying the bits value of the</span> |
| <span class="doccomment">/// internal struct.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// ## Operators</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The following operator traits are implemented for the generated `struct`:</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// - `BitOr` and `BitOrAssign`: union</span> |
| <span class="doccomment">/// - `BitAnd` and `BitAndAssign`: intersection</span> |
| <span class="doccomment">/// - `BitXor` and `BitXorAssign`: toggle</span> |
| <span class="doccomment">/// - `Sub` and `SubAssign`: set difference</span> |
| <span class="doccomment">/// - `Not`: set complement</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// As long as the assignment operators are unstable rust feature they are only</span> |
| <span class="doccomment">/// available with the crate feature `assignment_ops` enabled.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Methods</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The following methods are defined for the generated `struct`:</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// - `empty`: an empty set of flags</span> |
| <span class="doccomment">/// - `all`: the set of all flags</span> |
| <span class="doccomment">/// - `bits`: the raw value of the flags currently stored</span> |
| <span class="doccomment">/// - `from_bits`: convert from underlying bit representation, unless that</span> |
| <span class="doccomment">/// representation contains bits that do not correspond to a flag</span> |
| <span class="doccomment">/// - `from_bits_truncate`: convert from underlying bit representation, dropping</span> |
| <span class="doccomment">/// any bits that do not correspond to flags</span> |
| <span class="doccomment">/// - `is_empty`: `true` if no flags are currently stored</span> |
| <span class="doccomment">/// - `is_all`: `true` if all flags are currently set</span> |
| <span class="doccomment">/// - `intersects`: `true` if there are flags common to both `self` and `other`</span> |
| <span class="doccomment">/// - `contains`: `true` all of the flags in `other` are contained within `self`</span> |
| <span class="doccomment">/// - `insert`: inserts the specified flags in-place</span> |
| <span class="doccomment">/// - `remove`: removes the specified flags in-place</span> |
| <span class="doccomment">/// - `toggle`: the specified flags will be inserted if not present, and removed</span> |
| <span class="doccomment">/// if they are.</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">bitflags</span> { |
| ($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="kw">pub</span> <span class="ident">flags</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>:<span class="ident">ident</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>:<span class="ident">ty</span> { |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>:<span class="ident">ident</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span>:<span class="ident">expr</span>),<span class="op">+</span> |
| }) <span class="op">=></span> { |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">PartialEq</span>, <span class="ident">Eq</span>, <span class="ident">Clone</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">Hash</span>)]</span> |
| $(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>]</span>)<span class="op">*</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="ident">bits</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>, |
| } |
| |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>]</span>)<span class="op">*</span> <span class="kw">pub</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span> };)<span class="op">+</span> |
| |
| <span class="macro">bitflags</span><span class="macro">!</span> { |
| @<span class="ident">_impl</span> <span class="ident">flags</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span> { |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>]</span>)<span class="op">*</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span>),<span class="op">+</span> |
| } |
| } |
| }; |
| ($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="ident">flags</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>:<span class="ident">ident</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>:<span class="ident">ty</span> { |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>:<span class="ident">ident</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span>:<span class="ident">expr</span>),<span class="op">+</span> |
| }) <span class="op">=></span> { |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">PartialEq</span>, <span class="ident">Eq</span>, <span class="ident">Clone</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">Hash</span>)]</span> |
| $(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>]</span>)<span class="op">*</span> |
| <span class="kw">struct</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="ident">bits</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>, |
| } |
| |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>]</span>)<span class="op">*</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span> };)<span class="op">+</span> |
| |
| <span class="macro">bitflags</span><span class="macro">!</span> { |
| @<span class="ident">_impl</span> <span class="ident">flags</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span> { |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>]</span>)<span class="op">*</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span>),<span class="op">+</span> |
| } |
| } |
| }; |
| (@<span class="ident">_impl</span> <span class="ident">flags</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>:<span class="ident">ident</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>:<span class="ident">ty</span> { |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>:<span class="ident">ident</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span>:<span class="ident">expr</span>),<span class="op">+</span> |
| }) <span class="op">=></span> { |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">fmt</span>::<span class="prelude-ty">Result</span> { |
| <span class="comment">// This convoluted approach is to handle #[cfg]-based flag</span> |
| <span class="comment">// omission correctly. Some of the $Flag variants may not be</span> |
| <span class="comment">// defined in this module so we create an inner module which</span> |
| <span class="comment">// defines *all* flags to the value of 0. We then create a</span> |
| <span class="comment">// second inner module that defines all of the flags with #[cfg]</span> |
| <span class="comment">// to their real values. Afterwards the glob will import</span> |
| <span class="comment">// variants from the second inner module, shadowing all</span> |
| <span class="comment">// defined variants, leaving only the undefined ones with the</span> |
| <span class="comment">// bit value of 0.</span> |
| <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span> |
| <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">unused_assignments</span>)]</span> |
| <span class="kw">mod</span> <span class="ident">dummy</span> { |
| <span class="comment">// We can't use the real $BitFlags struct because it may be</span> |
| <span class="comment">// private, which prevents us from using it to define</span> |
| <span class="comment">// public constants.</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="ident">bits</span>: <span class="ident">u64</span>, |
| } |
| <span class="kw">mod</span> <span class="ident">real_flags</span> { |
| <span class="kw">use</span> <span class="kw">super</span>::<span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>; |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>]</span>)<span class="op">*</span> <span class="kw">pub</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="ident">bits</span>: <span class="kw">super</span>::<span class="kw">super</span>::<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>.<span class="ident">bits</span> <span class="kw">as</span> <span class="ident">u64</span> |
| };)<span class="op">+</span> |
| } |
| <span class="comment">// Now we define the "undefined" versions of the flags.</span> |
| <span class="comment">// This way, all the names exist, even if some are #[cfg]ed</span> |
| <span class="comment">// out.</span> |
| $(<span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="number">0</span> };)<span class="op">+</span> |
| |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="ident">self_</span>: <span class="ident">u64</span>, |
| <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">fmt</span>::<span class="ident">Formatter</span>) |
| <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">fmt</span>::<span class="prelude-ty">Result</span> { |
| <span class="comment">// Now we import the real values for the flags.</span> |
| <span class="comment">// Only ones that are #[cfg]ed out will be 0.</span> |
| <span class="kw">use</span> <span class="self">self</span>::<span class="ident">real_flags</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">first</span> <span class="op">=</span> <span class="bool-val">true</span>; |
| $( |
| <span class="comment">// $Flag.bits == 0 means that $Flag doesn't exist</span> |
| <span class="kw">if</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>.<span class="ident">bits</span> <span class="op">!=</span> <span class="number">0</span> <span class="op">&&</span> <span class="ident">self_</span> <span class="op">&</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>.<span class="ident">bits</span> <span class="kw">as</span> <span class="ident">u64</span> <span class="op">==</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>.<span class="ident">bits</span> <span class="kw">as</span> <span class="ident">u64</span> { |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">first</span> { |
| <span class="macro">try</span><span class="macro">!</span>(<span class="ident">f</span>.<span class="ident">write_str</span>(<span class="string">" | "</span>)); |
| } |
| <span class="ident">first</span> <span class="op">=</span> <span class="bool-val">false</span>; |
| <span class="macro">try</span><span class="macro">!</span>(<span class="ident">f</span>.<span class="ident">write_str</span>(<span class="macro">stringify</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>))); |
| } |
| )<span class="op">+</span> |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| <span class="ident">dummy</span>::<span class="ident">fmt</span>(<span class="self">self</span>.<span class="ident">bits</span> <span class="kw">as</span> <span class="ident">u64</span>, <span class="ident">f</span>) |
| } |
| } |
| |
| <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span> |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="doccomment">/// Returns an empty set of flags.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">empty</span>() <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="number">0</span> } |
| } |
| |
| <span class="doccomment">/// Returns the set containing all flags.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">all</span>() <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="comment">// See above `dummy` module for why this approach is taken.</span> |
| <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span> |
| <span class="kw">mod</span> <span class="ident">dummy</span> { |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="ident">bits</span>: <span class="ident">u64</span>, |
| } |
| <span class="kw">mod</span> <span class="ident">real_flags</span> { |
| <span class="kw">use</span> <span class="kw">super</span>::<span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>; |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>]</span>)<span class="op">*</span> <span class="kw">pub</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="ident">bits</span>: <span class="kw">super</span>::<span class="kw">super</span>::<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>.<span class="ident">bits</span> <span class="kw">as</span> <span class="ident">u64</span> |
| };)<span class="op">+</span> |
| } |
| $(<span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="number">0</span> };)<span class="op">+</span> |
| |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">all</span>() <span class="op">-></span> <span class="ident">u64</span> { |
| <span class="kw">use</span> <span class="self">self</span>::<span class="ident">real_flags</span>::<span class="kw-2">*</span>; |
| $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>.<span class="ident">bits</span>)<span class="op">|</span><span class="op">+</span> |
| } |
| } |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="ident">dummy</span>::<span class="ident">all</span>() <span class="kw">as</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span> } |
| } |
| |
| <span class="doccomment">/// Returns the raw value of the flags currently stored.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">bits</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span> { |
| <span class="self">self</span>.<span class="ident">bits</span> |
| } |
| |
| <span class="doccomment">/// Convert from underlying bit representation, unless that</span> |
| <span class="doccomment">/// representation contains bits that do not correspond to a flag.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">from_bits</span>(<span class="ident">bits</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">option</span>::<span class="prelude-ty">Option</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span><span class="op">></span> { |
| <span class="kw">if</span> (<span class="ident">bits</span> <span class="op">&</span> <span class="op">!</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>::<span class="ident">all</span>().<span class="ident">bits</span>()) <span class="op">==</span> <span class="number">0</span> { |
| <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">option</span>::<span class="prelude-ty">Option</span>::<span class="prelude-val">Some</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="ident">bits</span> }) |
| } <span class="kw">else</span> { |
| <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">option</span>::<span class="prelude-ty">Option</span>::<span class="prelude-val">None</span> |
| } |
| } |
| |
| <span class="doccomment">/// Convert from underlying bit representation, dropping any bits</span> |
| <span class="doccomment">/// that do not correspond to flags.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">from_bits_truncate</span>(<span class="ident">bits</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="ident">bits</span> } <span class="op">&</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>::<span class="ident">all</span>() |
| } |
| |
| <span class="doccomment">/// Returns `true` if no flags are currently stored.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_empty</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw-2">*</span><span class="self">self</span> <span class="op">==</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>::<span class="ident">empty</span>() |
| } |
| |
| <span class="doccomment">/// Returns `true` if all flags are currently set.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_all</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw-2">*</span><span class="self">self</span> <span class="op">==</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>::<span class="ident">all</span>() |
| } |
| |
| <span class="doccomment">/// Returns `true` if there are flags common to both `self` and `other`.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">intersects</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="op">!</span>(<span class="kw-2">*</span><span class="self">self</span> <span class="op">&</span> <span class="ident">other</span>).<span class="ident">is_empty</span>() |
| } |
| |
| <span class="doccomment">/// Returns `true` all of the flags in `other` are contained within `self`.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">contains</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| (<span class="kw-2">*</span><span class="self">self</span> <span class="op">&</span> <span class="ident">other</span>) <span class="op">==</span> <span class="ident">other</span> |
| } |
| |
| <span class="doccomment">/// Inserts the specified flags in-place.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">insert</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) { |
| <span class="self">self</span>.<span class="ident">bits</span> <span class="op">|=</span> <span class="ident">other</span>.<span class="ident">bits</span>; |
| } |
| |
| <span class="doccomment">/// Removes the specified flags in-place.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">remove</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) { |
| <span class="self">self</span>.<span class="ident">bits</span> <span class="op">&=</span> <span class="op">!</span><span class="ident">other</span>.<span class="ident">bits</span>; |
| } |
| |
| <span class="doccomment">/// Toggles the specified flags in-place.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">toggle</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) { |
| <span class="self">self</span>.<span class="ident">bits</span> <span class="op">^=</span> <span class="ident">other</span>.<span class="ident">bits</span>; |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">ops</span>::<span class="ident">BitOr</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>; |
| |
| <span class="doccomment">/// Returns the union of the two sets of flags.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">bitor</span>(<span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="self">self</span>.<span class="ident">bits</span> <span class="op">|</span> <span class="ident">other</span>.<span class="ident">bits</span> } |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">ops</span>::<span class="ident">BitOrAssign</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| |
| <span class="doccomment">/// Adds the set of flags.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">bitor_assign</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) { |
| <span class="self">self</span>.<span class="ident">bits</span> <span class="op">|=</span> <span class="ident">other</span>.<span class="ident">bits</span>; |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">ops</span>::<span class="ident">BitXor</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>; |
| |
| <span class="doccomment">/// Returns the left flags, but with all the right flags toggled.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">bitxor</span>(<span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="self">self</span>.<span class="ident">bits</span> <span class="op">^</span> <span class="ident">other</span>.<span class="ident">bits</span> } |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">ops</span>::<span class="ident">BitXorAssign</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| |
| <span class="doccomment">/// Toggles the set of flags.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">bitxor_assign</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) { |
| <span class="self">self</span>.<span class="ident">bits</span> <span class="op">^=</span> <span class="ident">other</span>.<span class="ident">bits</span>; |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">ops</span>::<span class="ident">BitAnd</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>; |
| |
| <span class="doccomment">/// Returns the intersection between the two sets of flags.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">bitand</span>(<span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="self">self</span>.<span class="ident">bits</span> <span class="op">&</span> <span class="ident">other</span>.<span class="ident">bits</span> } |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">ops</span>::<span class="ident">BitAndAssign</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| |
| <span class="doccomment">/// Disables all flags disabled in the set.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">bitand_assign</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) { |
| <span class="self">self</span>.<span class="ident">bits</span> <span class="op">&=</span> <span class="ident">other</span>.<span class="ident">bits</span>; |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">ops</span>::<span class="ident">Sub</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>; |
| |
| <span class="doccomment">/// Returns the set difference of the two sets of flags.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">sub</span>(<span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="self">self</span>.<span class="ident">bits</span> <span class="op">&</span> <span class="op">!</span><span class="ident">other</span>.<span class="ident">bits</span> } |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">ops</span>::<span class="ident">SubAssign</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| |
| <span class="doccomment">/// Disables all flags enabled in the set.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">sub_assign</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">other</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>) { |
| <span class="self">self</span>.<span class="ident">bits</span> <span class="op">&=</span> <span class="op">!</span><span class="ident">other</span>.<span class="ident">bits</span>; |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">ops</span>::<span class="ident">Not</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>; |
| |
| <span class="doccomment">/// Returns the complement of this set of flags.</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">not</span>(<span class="self">self</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { <span class="ident">bits</span>: <span class="op">!</span><span class="self">self</span>.<span class="ident">bits</span> } <span class="op">&</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>::<span class="ident">all</span>() |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">iter</span>::<span class="ident">Extend</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span><span class="op">></span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="kw">fn</span> <span class="ident">extend</span><span class="op"><</span><span class="ident">T</span>: <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">iter</span>::<span class="ident">IntoIterator</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span><span class="op">>></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">iterator</span>: <span class="ident">T</span>) { |
| <span class="kw">for</span> <span class="ident">item</span> <span class="kw">in</span> <span class="ident">iterator</span> { |
| <span class="self">self</span>.<span class="ident">insert</span>(<span class="ident">item</span>) |
| } |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">iter</span>::<span class="ident">FromIterator</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span><span class="op">></span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="kw">fn</span> <span class="ident">from_iter</span><span class="op"><</span><span class="ident">T</span>: <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">__core</span>::<span class="ident">iter</span>::<span class="ident">IntoIterator</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span><span class="op">>></span>(<span class="ident">iterator</span>: <span class="ident">T</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">result</span> <span class="op">=</span> <span class="self">Self</span>::<span class="ident">empty</span>(); |
| <span class="ident">result</span>.<span class="ident">extend</span>(<span class="ident">iterator</span>); |
| <span class="ident">result</span> |
| } |
| } |
| }; |
| ($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="kw">pub</span> <span class="ident">flags</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>:<span class="ident">ident</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>:<span class="ident">ty</span> { |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>:<span class="ident">ident</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span>:<span class="ident">expr</span>),<span class="op">+</span>, |
| }) <span class="op">=></span> { |
| <span class="macro">bitflags</span><span class="macro">!</span> { |
| $(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>]</span>)<span class="op">*</span> |
| <span class="kw">pub</span> <span class="ident">flags</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span> { |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>]</span>)<span class="op">*</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span>),<span class="op">+</span> |
| } |
| } |
| }; |
| ($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="ident">flags</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>:<span class="ident">ident</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>:<span class="ident">ty</span> { |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span>:<span class="ident">ident</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span>:<span class="ident">expr</span>),<span class="op">+</span>, |
| }) <span class="op">=></span> { |
| <span class="macro">bitflags</span><span class="macro">!</span> { |
| $(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>]</span>)<span class="op">*</span> |
| <span class="ident">flags</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">BitFlags</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span> { |
| $($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag_attr</span>]</span>)<span class="op">*</span> <span class="kw">const</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">Flag</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">value</span>),<span class="op">+</span> |
| } |
| } |
| }; |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> |
| <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">non_upper_case_globals</span>, <span class="ident">dead_code</span>)]</span> |
| <span class="kw">mod</span> <span class="ident">tests</span> { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">hash</span>::{<span class="ident">SipHasher</span>, <span class="ident">Hash</span>, <span class="ident">Hasher</span>}; |
| |
| <span class="macro">bitflags</span><span class="macro">!</span> { |
| <span class="attribute">#[<span class="ident">doc</span> <span class="op">=</span> <span class="string">"> The first principle is that you must not fool yourself — and"</span>]</span> |
| <span class="attribute">#[<span class="ident">doc</span> <span class="op">=</span> <span class="string">"> you are the easiest person to fool."</span>]</span> |
| <span class="attribute">#[<span class="ident">doc</span> <span class="op">=</span> <span class="string">"> "</span>]</span> |
| <span class="attribute">#[<span class="ident">doc</span> <span class="op">=</span> <span class="string">"> - Richard Feynman"</span>]</span> |
| <span class="ident">flags</span> <span class="ident">Flags</span>: <span class="ident">u32</span> { |
| <span class="kw">const</span> <span class="ident">FlagA</span> <span class="op">=</span> <span class="number">0b00000001</span>, |
| <span class="attribute">#[<span class="ident">doc</span> <span class="op">=</span> <span class="string">"<pcwalton> macros are way better at generating code than trans is"</span>]</span> |
| <span class="kw">const</span> <span class="ident">FlagB</span> <span class="op">=</span> <span class="number">0b00000010</span>, |
| <span class="kw">const</span> <span class="ident">FlagC</span> <span class="op">=</span> <span class="number">0b00000100</span>, |
| <span class="attribute">#[<span class="ident">doc</span> <span class="op">=</span> <span class="string">"* cmr bed"</span>]</span> |
| <span class="attribute">#[<span class="ident">doc</span> <span class="op">=</span> <span class="string">"* strcat table"</span>]</span> |
| <span class="attribute">#[<span class="ident">doc</span> <span class="op">=</span> <span class="string">"<strcat> wait what?"</span>]</span> |
| <span class="kw">const</span> <span class="ident">FlagABC</span> <span class="op">=</span> <span class="ident">FlagA</span>.<span class="ident">bits</span> |
| <span class="op">|</span> <span class="ident">FlagB</span>.<span class="ident">bits</span> |
| <span class="op">|</span> <span class="ident">FlagC</span>.<span class="ident">bits</span>, |
| } |
| } |
| |
| <span class="macro">bitflags</span><span class="macro">!</span> { |
| <span class="ident">flags</span> <span class="ident">_CfgFlags</span>: <span class="ident">u32</span> { |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">windows</span>)]</span> |
| <span class="kw">const</span> <span class="ident">_CfgA</span> <span class="op">=</span> <span class="number">0b01</span>, |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span> |
| <span class="kw">const</span> <span class="ident">_CfgB</span> <span class="op">=</span> <span class="number">0b01</span>, |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">windows</span>)]</span> |
| <span class="kw">const</span> <span class="ident">_CfgC</span> <span class="op">=</span> <span class="ident">_CfgA</span>.<span class="ident">bits</span> <span class="op">|</span> <span class="number">0b10</span>, |
| } |
| } |
| |
| <span class="macro">bitflags</span><span class="macro">!</span> { |
| <span class="ident">flags</span> <span class="ident">AnotherSetOfFlags</span>: <span class="ident">i8</span> { |
| <span class="kw">const</span> <span class="ident">AnotherFlag</span> <span class="op">=</span> <span class="op">-</span><span class="number">1_i8</span>, |
| } |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_bits</span>(){ |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">empty</span>().<span class="ident">bits</span>(), <span class="number">0b00000000</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">FlagA</span>.<span class="ident">bits</span>(), <span class="number">0b00000001</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">FlagABC</span>.<span class="ident">bits</span>(), <span class="number">0b00000111</span>); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">AnotherSetOfFlags</span>::<span class="ident">empty</span>().<span class="ident">bits</span>(), <span class="number">0b00</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">AnotherFlag</span>.<span class="ident">bits</span>(), <span class="op">!</span><span class="number">0_i8</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_from_bits</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits</span>(<span class="number">0</span>), <span class="prelude-val">Some</span>(<span class="ident">Flags</span>::<span class="ident">empty</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits</span>(<span class="number">0b1</span>), <span class="prelude-val">Some</span>(<span class="ident">FlagA</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits</span>(<span class="number">0b10</span>), <span class="prelude-val">Some</span>(<span class="ident">FlagB</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits</span>(<span class="number">0b11</span>), <span class="prelude-val">Some</span>(<span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits</span>(<span class="number">0b1000</span>), <span class="prelude-val">None</span>); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">AnotherSetOfFlags</span>::<span class="ident">from_bits</span>(<span class="op">!</span><span class="number">0_i8</span>), <span class="prelude-val">Some</span>(<span class="ident">AnotherFlag</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_from_bits_truncate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits_truncate</span>(<span class="number">0</span>), <span class="ident">Flags</span>::<span class="ident">empty</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits_truncate</span>(<span class="number">0b1</span>), <span class="ident">FlagA</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits_truncate</span>(<span class="number">0b10</span>), <span class="ident">FlagB</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits_truncate</span>(<span class="number">0b11</span>), (<span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits_truncate</span>(<span class="number">0b1000</span>), <span class="ident">Flags</span>::<span class="ident">empty</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">from_bits_truncate</span>(<span class="number">0b1001</span>), <span class="ident">FlagA</span>); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">AnotherSetOfFlags</span>::<span class="ident">from_bits_truncate</span>(<span class="number">0_i8</span>), <span class="ident">AnotherSetOfFlags</span>::<span class="ident">empty</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_is_empty</span>(){ |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">empty</span>().<span class="ident">is_empty</span>()); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">FlagA</span>.<span class="ident">is_empty</span>()); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">FlagABC</span>.<span class="ident">is_empty</span>()); |
| |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">AnotherFlag</span>.<span class="ident">is_empty</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_is_all</span>() { |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">Flags</span>::<span class="ident">all</span>().<span class="ident">is_all</span>()); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">FlagA</span>.<span class="ident">is_all</span>()); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">FlagABC</span>.<span class="ident">is_all</span>()); |
| |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">AnotherFlag</span>.<span class="ident">is_all</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_two_empties_do_not_intersect</span>() { |
| <span class="kw">let</span> <span class="ident">e1</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| <span class="kw">let</span> <span class="ident">e2</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">e1</span>.<span class="ident">intersects</span>(<span class="ident">e2</span>)); |
| |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">AnotherFlag</span>.<span class="ident">intersects</span>(<span class="ident">AnotherFlag</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_empty_does_not_intersect_with_full</span>() { |
| <span class="kw">let</span> <span class="ident">e1</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| <span class="kw">let</span> <span class="ident">e2</span> <span class="op">=</span> <span class="ident">FlagABC</span>; |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">e1</span>.<span class="ident">intersects</span>(<span class="ident">e2</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_disjoint_intersects</span>() { |
| <span class="kw">let</span> <span class="ident">e1</span> <span class="op">=</span> <span class="ident">FlagA</span>; |
| <span class="kw">let</span> <span class="ident">e2</span> <span class="op">=</span> <span class="ident">FlagB</span>; |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">e1</span>.<span class="ident">intersects</span>(<span class="ident">e2</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_overlapping_intersects</span>() { |
| <span class="kw">let</span> <span class="ident">e1</span> <span class="op">=</span> <span class="ident">FlagA</span>; |
| <span class="kw">let</span> <span class="ident">e2</span> <span class="op">=</span> <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>; |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">e1</span>.<span class="ident">intersects</span>(<span class="ident">e2</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_contains</span>() { |
| <span class="kw">let</span> <span class="ident">e1</span> <span class="op">=</span> <span class="ident">FlagA</span>; |
| <span class="kw">let</span> <span class="ident">e2</span> <span class="op">=</span> <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>; |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">e1</span>.<span class="ident">contains</span>(<span class="ident">e2</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">e2</span>.<span class="ident">contains</span>(<span class="ident">e1</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">FlagABC</span>.<span class="ident">contains</span>(<span class="ident">e2</span>)); |
| |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">AnotherFlag</span>.<span class="ident">contains</span>(<span class="ident">AnotherFlag</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_insert</span>(){ |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">e1</span> <span class="op">=</span> <span class="ident">FlagA</span>; |
| <span class="kw">let</span> <span class="ident">e2</span> <span class="op">=</span> <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>; |
| <span class="ident">e1</span>.<span class="ident">insert</span>(<span class="ident">e2</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e1</span>, <span class="ident">e2</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">e3</span> <span class="op">=</span> <span class="ident">AnotherSetOfFlags</span>::<span class="ident">empty</span>(); |
| <span class="ident">e3</span>.<span class="ident">insert</span>(<span class="ident">AnotherFlag</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e3</span>, <span class="ident">AnotherFlag</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_remove</span>(){ |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">e1</span> <span class="op">=</span> <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>; |
| <span class="kw">let</span> <span class="ident">e2</span> <span class="op">=</span> <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagC</span>; |
| <span class="ident">e1</span>.<span class="ident">remove</span>(<span class="ident">e2</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e1</span>, <span class="ident">FlagB</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">e3</span> <span class="op">=</span> <span class="ident">AnotherFlag</span>; |
| <span class="ident">e3</span>.<span class="ident">remove</span>(<span class="ident">AnotherFlag</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e3</span>, <span class="ident">AnotherSetOfFlags</span>::<span class="ident">empty</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_operators</span>() { |
| <span class="kw">let</span> <span class="ident">e1</span> <span class="op">=</span> <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagC</span>; |
| <span class="kw">let</span> <span class="ident">e2</span> <span class="op">=</span> <span class="ident">FlagB</span> <span class="op">|</span> <span class="ident">FlagC</span>; |
| <span class="macro">assert_eq</span><span class="macro">!</span>((<span class="ident">e1</span> <span class="op">|</span> <span class="ident">e2</span>), <span class="ident">FlagABC</span>); <span class="comment">// union</span> |
| <span class="macro">assert_eq</span><span class="macro">!</span>((<span class="ident">e1</span> <span class="op">&</span> <span class="ident">e2</span>), <span class="ident">FlagC</span>); <span class="comment">// intersection</span> |
| <span class="macro">assert_eq</span><span class="macro">!</span>((<span class="ident">e1</span> <span class="op">-</span> <span class="ident">e2</span>), <span class="ident">FlagA</span>); <span class="comment">// set difference</span> |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">e2</span>, <span class="ident">FlagA</span>); <span class="comment">// set complement</span> |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e1</span> <span class="op">^</span> <span class="ident">e2</span>, <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>); <span class="comment">// toggle</span> |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">e3</span> <span class="op">=</span> <span class="ident">e1</span>; |
| <span class="ident">e3</span>.<span class="ident">toggle</span>(<span class="ident">e2</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e3</span>, <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">m4</span> <span class="op">=</span> <span class="ident">AnotherSetOfFlags</span>::<span class="ident">empty</span>(); |
| <span class="ident">m4</span>.<span class="ident">toggle</span>(<span class="ident">AnotherSetOfFlags</span>::<span class="ident">empty</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">m4</span>, <span class="ident">AnotherSetOfFlags</span>::<span class="ident">empty</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_assignment_operators</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">m1</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| <span class="kw">let</span> <span class="ident">e1</span> <span class="op">=</span> <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagC</span>; |
| <span class="comment">// union</span> |
| <span class="ident">m1</span> <span class="op">|=</span> <span class="ident">FlagA</span>; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">m1</span>, <span class="ident">FlagA</span>); |
| <span class="comment">// intersection</span> |
| <span class="ident">m1</span> <span class="op">&=</span> <span class="ident">e1</span>; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">m1</span>, <span class="ident">FlagA</span>); |
| <span class="comment">// set difference</span> |
| <span class="ident">m1</span> <span class="op">-=</span> <span class="ident">m1</span>; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">m1</span>, <span class="ident">Flags</span>::<span class="ident">empty</span>()); |
| <span class="comment">// toggle</span> |
| <span class="ident">m1</span> <span class="op">^=</span> <span class="ident">e1</span>; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">m1</span>, <span class="ident">e1</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_extend</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">flags</span>; |
| |
| <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| <span class="ident">flags</span>.<span class="ident">extend</span>([].<span class="ident">iter</span>().<span class="ident">cloned</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">flags</span>, <span class="ident">Flags</span>::<span class="ident">empty</span>()); |
| |
| <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| <span class="ident">flags</span>.<span class="ident">extend</span>([<span class="ident">FlagA</span>, <span class="ident">FlagB</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">flags</span>, <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>); |
| |
| <span class="ident">flags</span> <span class="op">=</span> <span class="ident">FlagA</span>; |
| <span class="ident">flags</span>.<span class="ident">extend</span>([<span class="ident">FlagA</span>, <span class="ident">FlagB</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">flags</span>, <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>); |
| |
| <span class="ident">flags</span> <span class="op">=</span> <span class="ident">FlagB</span>; |
| <span class="ident">flags</span>.<span class="ident">extend</span>([<span class="ident">FlagA</span>, <span class="ident">FlagABC</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">flags</span>, <span class="ident">FlagABC</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_from_iterator</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>([].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>::<span class="op"><</span><span class="ident">Flags</span><span class="op">></span>(), <span class="ident">Flags</span>::<span class="ident">empty</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>([<span class="ident">FlagA</span>, <span class="ident">FlagB</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>::<span class="op"><</span><span class="ident">Flags</span><span class="op">></span>(), <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>([<span class="ident">FlagA</span>, <span class="ident">FlagABC</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>::<span class="op"><</span><span class="ident">Flags</span><span class="op">></span>(), <span class="ident">FlagABC</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_lt</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">a</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">b</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span>(<span class="ident">a</span> <span class="op"><</span> <span class="ident">b</span>) <span class="op">&&</span> <span class="op">!</span>(<span class="ident">b</span> <span class="op"><</span> <span class="ident">a</span>)); |
| <span class="ident">b</span> <span class="op">=</span> <span class="ident">FlagB</span>; |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">a</span> <span class="op"><</span> <span class="ident">b</span>); |
| <span class="ident">a</span> <span class="op">=</span> <span class="ident">FlagC</span>; |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span>(<span class="ident">a</span> <span class="op"><</span> <span class="ident">b</span>) <span class="op">&&</span> <span class="ident">b</span> <span class="op"><</span> <span class="ident">a</span>); |
| <span class="ident">b</span> <span class="op">=</span> <span class="ident">FlagC</span> <span class="op">|</span> <span class="ident">FlagB</span>; |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">a</span> <span class="op"><</span> <span class="ident">b</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_ord</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">a</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">b</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">a</span> <span class="op"><=</span> <span class="ident">b</span> <span class="op">&&</span> <span class="ident">a</span> <span class="op">>=</span> <span class="ident">b</span>); |
| <span class="ident">a</span> <span class="op">=</span> <span class="ident">FlagA</span>; |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">a</span> <span class="op">></span> <span class="ident">b</span> <span class="op">&&</span> <span class="ident">a</span> <span class="op">>=</span> <span class="ident">b</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">b</span> <span class="op"><</span> <span class="ident">a</span> <span class="op">&&</span> <span class="ident">b</span> <span class="op"><=</span> <span class="ident">a</span>); |
| <span class="ident">b</span> <span class="op">=</span> <span class="ident">FlagB</span>; |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">b</span> <span class="op">></span> <span class="ident">a</span> <span class="op">&&</span> <span class="ident">b</span> <span class="op">>=</span> <span class="ident">a</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">a</span> <span class="op"><</span> <span class="ident">b</span> <span class="op">&&</span> <span class="ident">a</span> <span class="op"><=</span> <span class="ident">b</span>); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">hash</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Hash</span><span class="op">></span>(<span class="ident">t</span>: <span class="kw-2">&</span><span class="ident">T</span>) <span class="op">-></span> <span class="ident">u64</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">SipHasher</span>::<span class="ident">new_with_keys</span>(<span class="number">0</span>, <span class="number">0</span>); |
| <span class="ident">t</span>.<span class="ident">hash</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">s</span>); |
| <span class="ident">s</span>.<span class="ident">finish</span>() |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_hash</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">x</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">y</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">empty</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hash</span>(<span class="kw-2">&</span><span class="ident">x</span>), <span class="ident">hash</span>(<span class="kw-2">&</span><span class="ident">y</span>)); |
| <span class="ident">x</span> <span class="op">=</span> <span class="ident">Flags</span>::<span class="ident">all</span>(); |
| <span class="ident">y</span> <span class="op">=</span> <span class="ident">FlagABC</span>; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hash</span>(<span class="kw-2">&</span><span class="ident">x</span>), <span class="ident">hash</span>(<span class="kw-2">&</span><span class="ident">y</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_debug</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="ident">FlagA</span> <span class="op">|</span> <span class="ident">FlagB</span>), <span class="string">"FlagA | FlagB"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="ident">FlagABC</span>), <span class="string">"FlagA | FlagB | FlagC | FlagABC"</span>); |
| } |
| |
| <span class="kw">mod</span> <span class="ident">submodule</span> { |
| <span class="macro">bitflags</span><span class="macro">!</span> { |
| <span class="kw">pub</span> <span class="ident">flags</span> <span class="ident">PublicFlags</span>: <span class="ident">i8</span> { |
| <span class="kw">const</span> <span class="ident">FlagX</span> <span class="op">=</span> <span class="number">0</span>, |
| } |
| } |
| <span class="macro">bitflags</span><span class="macro">!</span> { |
| <span class="ident">flags</span> <span class="ident">PrivateFlags</span>: <span class="ident">i8</span> { |
| <span class="kw">const</span> <span class="ident">FlagY</span> <span class="op">=</span> <span class="number">0</span>, |
| } |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_private</span>() { |
| <span class="kw">let</span> _ <span class="op">=</span> <span class="ident">FlagY</span>; |
| } |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">test_public</span>() { |
| <span class="kw">let</span> _ <span class="op">=</span> <span class="ident">submodule</span>::<span class="ident">FlagX</span>; |
| } |
| |
| <span class="kw">mod</span> <span class="ident">t1</span> { |
| <span class="kw">mod</span> <span class="ident">foo</span> { |
| <span class="kw">pub</span> <span class="kw">type</span> <span class="ident">Bar</span> <span class="op">=</span> <span class="ident">i32</span>; |
| } |
| |
| <span class="macro">bitflags</span><span class="macro">!</span> { |
| <span class="doccomment">/// baz</span> |
| <span class="ident">flags</span> <span class="ident">Flags</span>: <span class="ident">foo</span>::<span class="ident">Bar</span> { |
| <span class="kw">const</span> <span class="ident">A</span> <span class="op">=</span> <span class="number">0b00000001</span>, |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">foo</span>)]</span> |
| <span class="kw">const</span> <span class="ident">B</span> <span class="op">=</span> <span class="number">0b00000010</span>, |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">foo</span>)]</span> |
| <span class="kw">const</span> <span class="ident">C</span> <span class="op">=</span> <span class="number">0b00000010</span>, |
| } |
| } |
| } |
| } |
| </pre> |
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