| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/quick-error-1.2.3/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../quick_error/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../quick_error/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="attribute">#![warn(missing_docs)] |
| </span><span class="doccomment">//! A macro which makes errors easy to write |
| //! |
| //! Minimum type is like this: |
| //! |
| //! ```rust |
| //! #[macro_use] extern crate quick_error; |
| //! # fn main() {} |
| //! |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum SomeError { |
| //! Variant1 {} |
| //! } |
| //! } |
| //! ``` |
| //! Both ``pub`` and non-public types may be declared, and all meta attributes |
| //! (such as ``#[derive(Debug)]``) are forwarded as is. The `Debug` must be |
| //! implemented (but you may do that yourself if you like). The documentation |
| //! comments ``/// something`` (as well as other meta attrbiutes) on variants |
| //! are allowed. |
| //! |
| //! # Allowed Syntax |
| //! |
| //! You may add arbitrary parameters to any struct variant: |
| //! |
| //! ```rust |
| //! # #[macro_use] extern crate quick_error; |
| //! # fn main() {} |
| //! # |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum SomeError { |
| //! /// IO Error |
| //! Io(err: std::io::Error) {} |
| //! /// Utf8 Error |
| //! Utf8(err: std::str::Utf8Error) {} |
| //! } |
| //! } |
| //! ``` |
| //! |
| //! Note unlike in normal Enum declarations you declare names of fields (which |
| //! are omitted from type). How they can be used is outlined below. |
| //! |
| //! Now you might have noticed trailing braces `{}`. They are used to define |
| //! implementations. By default: |
| //! |
| //! * `Error::cause()` returns None (even if type wraps some value) |
| //! * `Display` outputs debug representation |
| //! * No `From` implementations are defined |
| //! |
| //! ```rust |
| //! # #[macro_use] extern crate quick_error; |
| //! # fn main() {} |
| //! # |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum SomeError { |
| //! Io(err: std::io::Error) { |
| //! display("{}", err) |
| //! } |
| //! Utf8(err: std::str::Utf8Error) { |
| //! display("utf8 error") |
| //! } |
| //! } |
| //! } |
| //! ``` |
| //! |
| //! To change `cause` method to return some error, add `cause(value)`, for |
| //! example: |
| //! |
| //! ```rust |
| //! # #[macro_use] extern crate quick_error; |
| //! # fn main() {} |
| //! # |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum SomeError { |
| //! Io(err: std::io::Error) { |
| //! cause(err) |
| //! } |
| //! Utf8(err: std::str::Utf8Error) { |
| //! display("utf8 error") |
| //! } |
| //! Other(err: Box<std::error::Error>) { |
| //! cause(&**err) |
| //! } |
| //! } |
| //! } |
| //! ``` |
| //! Note you don't need to wrap value in `Some`, its implicit. In case you want |
| //! `None` returned just omit the `cause`. You can't return `None` |
| //! conditionally. |
| //! |
| //! To change how each clause is `Display`ed add `display(pattern,..args)`, |
| //! for example: |
| //! |
| //! ```rust |
| //! # #[macro_use] extern crate quick_error; |
| //! # fn main() {} |
| //! # |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum SomeError { |
| //! Io(err: std::io::Error) { |
| //! display("I/O error: {}", err) |
| //! } |
| //! Utf8(err: std::str::Utf8Error) { |
| //! display("Utf8 error, valid up to {}", err.valid_up_to()) |
| //! } |
| //! } |
| //! } |
| //! ``` |
| //! |
| //! If you need a reference to the error when `Display`ing, you can instead use |
| //! `display(x) -> (pattern, ..args)`, where `x` sets the name of the reference. |
| //! |
| //! ```rust |
| //! # #[macro_use] extern crate quick_error; |
| //! # fn main() {} |
| //! # |
| //! use std::error::Error; // put methods like `source()` of this trait into scope |
| //! |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum SomeError { |
| //! Io(err: std::io::Error) { |
| //! display(x) -> ("I/O: {}", err) |
| //! } |
| //! Utf8(err: std::str::Utf8Error) { |
| //! display(self_) -> ("UTF-8 error. Valid up to {}", err.valid_up_to()) |
| //! } |
| //! } |
| //! } |
| //! ``` |
| //! |
| //! To convert to the type from any other, use one of the three forms of |
| //! `from` clause. |
| //! |
| //! For example, to convert simple wrapper use bare `from()`: |
| //! |
| //! ```rust |
| //! # #[macro_use] extern crate quick_error; |
| //! # fn main() {} |
| //! # |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum SomeError { |
| //! Io(err: std::io::Error) { |
| //! from() |
| //! } |
| //! } |
| //! } |
| //! ``` |
| //! |
| //! This implements ``From<io::Error>``. |
| //! |
| //! To convert to singleton enumeration type (discarding the value), use |
| //! the `from(type)` form: |
| //! |
| //! ```rust |
| //! # #[macro_use] extern crate quick_error; |
| //! # fn main() {} |
| //! # |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum SomeError { |
| //! FormatError { |
| //! from(std::fmt::Error) |
| //! } |
| //! } |
| //! } |
| //! ``` |
| //! |
| //! And the most powerful form is `from(var: type) -> (arguments...)`. It |
| //! might be used to convert to type with multiple arguments or for arbitrary |
| //! value conversions: |
| //! |
| //! ```rust |
| //! # #[macro_use] extern crate quick_error; |
| //! # fn main() {} |
| //! # |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum SomeError { |
| //! FailedOperation(s: &'static str, errno: i32) { |
| //! from(errno: i32) -> ("os error", errno) |
| //! from(e: std::io::Error) -> ("io error", e.raw_os_error().unwrap()) |
| //! } |
| //! /// Converts from both kinds of utf8 errors |
| //! Utf8(err: std::str::Utf8Error) { |
| //! from() |
| //! from(err: std::string::FromUtf8Error) -> (err.utf8_error()) |
| //! } |
| //! } |
| //! } |
| //! ``` |
| //! # Context |
| //! |
| //! Since quick-error 1.1 we also have a `context` declaration, which is |
| //! similar to (the longest form of) `from`, but allows adding some context to |
| //! the error. We need a longer example to demonstrate this: |
| //! |
| //! ```rust |
| //! # #[macro_use] extern crate quick_error; |
| //! # use std::io; |
| //! # use std::fs::File; |
| //! # use std::path::{Path, PathBuf}; |
| //! # |
| //! use quick_error::ResultExt; |
| //! |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum Error { |
| //! File(filename: PathBuf, err: io::Error) { |
| //! context(path: &'a Path, err: io::Error) |
| //! -> (path.to_path_buf(), err) |
| //! } |
| //! } |
| //! } |
| //! |
| //! fn openfile(path: &Path) -> Result<(), Error> { |
| //! try!(File::open(path).context(path)); |
| //! |
| //! // If we didn't have context, the line above would be written as; |
| //! // |
| //! // try!(File::open(path) |
| //! // .map_err(|err| Error::File(path.to_path_buf(), err))); |
| //! |
| //! Ok(()) |
| //! } |
| //! |
| //! # fn main() { |
| //! # openfile(Path::new("/etc/somefile")).ok(); |
| //! # } |
| //! ``` |
| //! |
| //! Each `context(a: A, b: B)` clause implements |
| //! `From<Context<A, B>> for Error`. Which means multiple `context` clauses |
| //! are a subject to the normal coherence rules. Unfortunately, we can't |
| //! provide full support of generics for the context, but you may either use a |
| //! lifetime `'a` for references or `AsRef<Type>` (the latter means `A: |
| //! AsRef<Type>`, and `Type` must be concrete). It's also occasionally useful |
| //! to use a tuple as a type of the first argument. |
| //! |
| //! You also need to `use quick_error::ResultExt` extension trait to get |
| //! working `.context()` method. |
| //! |
| //! More info on context in [this article](http://bit.ly/1PsuxDt). |
| //! |
| //! All forms of `from`, `display`, `cause`, and `context` |
| //! clauses can be combined and put in arbitrary order. Only `from` and |
| //! `context` can be used multiple times in single variant of enumeration. |
| //! Docstrings are also okay. Empty braces can be omitted as of quick_error |
| //! 0.1.3. |
| //! |
| //! # Private Enums |
| //! |
| //! Since quick-error 1.2.0 we have a way to make a private enum that is |
| //! wrapped by public structure: |
| //! |
| //! ```rust |
| //! #[macro_use] extern crate quick_error; |
| //! # fn main() {} |
| //! |
| //! quick_error! { |
| //! #[derive(Debug)] |
| //! pub enum PubError wraps ErrorEnum { |
| //! Variant1 {} |
| //! } |
| //! } |
| //! ``` |
| //! |
| //! This generates data structures like this |
| //! |
| //! ```rust |
| //! |
| //! pub struct PubError(ErrorEnum); |
| //! |
| //! enum ErrorEnum { |
| //! Variant1, |
| //! } |
| //! |
| //! ``` |
| //! |
| //! Which in turn allows you to export just `PubError` in your crate and keep |
| //! actual enumeration private to the crate. This is useful to keep backwards |
| //! compatibility for error types. Currently there is no shorcuts to define |
| //! error constructors for the inner type, but we consider adding some in |
| //! future versions. |
| //! |
| //! It's possible to declare internal enum as public too. |
| //! |
| //! |
| |
| |
| /// Main macro that does all the work |
| </span><span class="attribute">#[macro_export] |
| </span><span class="macro">macro_rules! </span>quick_error { |
| |
| ( $(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta]</span>)* |
| <span class="kw">pub enum </span><span class="macro-nonterminal">$name</span>:ident { $(<span class="macro-nonterminal">$chunks</span>:tt)* } |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [<span class="kw">pub enum </span><span class="macro-nonterminal">$name </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)* ] |
| items [] buf [] |
| queue [ $(<span class="macro-nonterminal">$chunks</span>)* ]); |
| }; |
| ( $(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta]</span>)* |
| <span class="kw">enum </span><span class="macro-nonterminal">$name</span>:ident { $(<span class="macro-nonterminal">$chunks</span>:tt)* } |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [<span class="kw">enum </span><span class="macro-nonterminal">$name </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)* ] |
| items [] buf [] |
| queue [ $(<span class="macro-nonterminal">$chunks</span>)* ]); |
| }; |
| |
| ( $(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta]</span>)* |
| <span class="kw">pub enum </span><span class="macro-nonterminal">$name</span>:ident wraps <span class="macro-nonterminal">$enum_name</span>:ident { $(<span class="macro-nonterminal">$chunks</span>:tt)* } |
| ) => { |
| <span class="macro">quick_error!</span>(WRAPPER <span class="macro-nonterminal">$enum_name </span>[ <span class="kw">pub struct </span>] <span class="macro-nonterminal">$name </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)<span class="kw-2">*</span>); |
| <span class="macro">quick_error!</span>(SORT [<span class="kw">enum </span><span class="macro-nonterminal">$enum_name </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)* ] |
| items [] buf [] |
| queue [ $(<span class="macro-nonterminal">$chunks</span>)* ]); |
| }; |
| |
| ( $(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta]</span>)* |
| <span class="kw">pub enum </span><span class="macro-nonterminal">$name</span>:ident wraps <span class="kw">pub </span><span class="macro-nonterminal">$enum_name</span>:ident { $(<span class="macro-nonterminal">$chunks</span>:tt)* } |
| ) => { |
| <span class="macro">quick_error!</span>(WRAPPER <span class="macro-nonterminal">$enum_name </span>[ <span class="kw">pub struct </span>] <span class="macro-nonterminal">$name </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)<span class="kw-2">*</span>); |
| <span class="macro">quick_error!</span>(SORT [<span class="kw">pub enum </span><span class="macro-nonterminal">$enum_name </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)* ] |
| items [] buf [] |
| queue [ $(<span class="macro-nonterminal">$chunks</span>)* ]); |
| }; |
| ( $(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta]</span>)* |
| <span class="kw">enum </span><span class="macro-nonterminal">$name</span>:ident wraps <span class="macro-nonterminal">$enum_name</span>:ident { $(<span class="macro-nonterminal">$chunks</span>:tt)* } |
| ) => { |
| <span class="macro">quick_error!</span>(WRAPPER <span class="macro-nonterminal">$enum_name </span>[ <span class="kw">struct </span>] <span class="macro-nonterminal">$name </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)<span class="kw-2">*</span>); |
| <span class="macro">quick_error!</span>(SORT [<span class="kw">enum </span><span class="macro-nonterminal">$enum_name </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)* ] |
| items [] buf [] |
| queue [ $(<span class="macro-nonterminal">$chunks</span>)* ]); |
| }; |
| |
| ( $(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta]</span>)* |
| <span class="kw">enum </span><span class="macro-nonterminal">$name</span>:ident wraps <span class="kw">pub </span><span class="macro-nonterminal">$enum_name</span>:ident { $(<span class="macro-nonterminal">$chunks</span>:tt)* } |
| ) => { |
| <span class="macro">quick_error!</span>(WRAPPER <span class="macro-nonterminal">$enum_name </span>[ <span class="kw">struct </span>] <span class="macro-nonterminal">$name </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)<span class="kw-2">*</span>); |
| <span class="macro">quick_error!</span>(SORT [<span class="kw">pub enum </span><span class="macro-nonterminal">$enum_name </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)* ] |
| items [] buf [] |
| queue [ $(<span class="macro-nonterminal">$chunks</span>)* ]); |
| }; |
| |
| |
| ( |
| WRAPPER <span class="macro-nonterminal">$internal</span>:ident [ $(<span class="macro-nonterminal">$strdef</span>:tt)* ] <span class="macro-nonterminal">$strname</span>:ident |
| $(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta]</span>)* |
| ) => { |
| $(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)* |
| $(<span class="macro-nonterminal">$strdef</span>)* <span class="macro-nonterminal">$strname </span>( <span class="macro-nonterminal">$internal </span>); |
| |
| <span class="kw">impl </span>::std::fmt::Display <span class="kw">for </span><span class="macro-nonterminal">$strname </span>{ |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>::std::fmt::Formatter) |
| -> ::std::fmt::Result |
| { |
| ::std::fmt::Display::fmt(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, f) |
| } |
| } |
| |
| <span class="kw">impl </span>From<<span class="macro-nonterminal">$internal</span>> <span class="kw">for </span><span class="macro-nonterminal">$strname </span>{ |
| <span class="kw">fn </span>from(err: <span class="macro-nonterminal">$internal</span>) -> <span class="self">Self </span>{ |
| <span class="macro-nonterminal">$strname</span>(err) |
| } |
| } |
| |
| <span class="kw">impl </span>::std::error::Error <span class="kw">for </span><span class="macro-nonterminal">$strname </span>{ |
| <span class="attribute">#[allow(deprecated)] |
| </span><span class="kw">fn </span>cause(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>::std::error::Error> { |
| <span class="self">self</span>.<span class="number">0</span>.cause() |
| } |
| } |
| }; |
| |
| <span class="comment">// Queue is empty, can do the work |
| </span>(SORT [<span class="kw">enum </span><span class="macro-nonterminal">$name</span>:ident $( <span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta] </span>)<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [ ] |
| queue [ ] |
| ) => { |
| <span class="macro">quick_error!</span>(ENUM_DEFINITION [<span class="kw">enum </span><span class="macro-nonterminal">$name </span>$( <span class="attribute">#[<span class="macro-nonterminal">$meta</span>] </span>)<span class="kw-2">*</span>] |
| body [] |
| queue [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>: <span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] )<span class="kw-2">*</span>] |
| ); |
| <span class="macro">quick_error!</span>(IMPLEMENTATIONS <span class="macro-nonterminal">$name </span>{$( |
| <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)<span class="kw-2">*</span>] [$( <span class="macro-nonterminal">$ivar</span>: <span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} |
| )<span class="kw-2">*</span>}); |
| $( |
| <span class="macro">quick_error!</span>(ERROR_CHECK <span class="macro-nonterminal">$imode </span>$(<span class="macro-nonterminal">$ifuncs</span>)<span class="kw-2">*</span>); |
| )* |
| }; |
| (SORT [<span class="kw">pub enum </span><span class="macro-nonterminal">$name</span>:ident $( <span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta] </span>)<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [ ] |
| queue [ ] |
| ) => { |
| <span class="macro">quick_error!</span>(ENUM_DEFINITION [<span class="kw">pub enum </span><span class="macro-nonterminal">$name </span>$( <span class="attribute">#[<span class="macro-nonterminal">$meta</span>] </span>)<span class="kw-2">*</span>] |
| body [] |
| queue [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>: <span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] )<span class="kw-2">*</span>] |
| ); |
| <span class="macro">quick_error!</span>(IMPLEMENTATIONS <span class="macro-nonterminal">$name </span>{$( |
| <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)<span class="kw-2">*</span>] [$( <span class="macro-nonterminal">$ivar</span>: <span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} |
| )<span class="kw-2">*</span>}); |
| $( |
| <span class="macro">quick_error!</span>(ERROR_CHECK <span class="macro-nonterminal">$imode </span>$(<span class="macro-nonterminal">$ifuncs</span>)<span class="kw-2">*</span>); |
| )* |
| }; |
| <span class="comment">// Add meta to buffer |
| </span>(SORT [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>:meta] </span>)<span class="kw-2">*</span>] |
| queue [ <span class="attribute">#[<span class="macro-nonterminal">$qmeta</span>:meta] </span>$( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [$( <span class="macro-nonterminal">$def </span>)<span class="kw-2">*</span>] |
| items [$( $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>:<span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} )<span class="kw-2">*</span>] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>] </span>)* <span class="attribute">#[<span class="macro-nonterminal">$qmeta</span>] </span>] |
| queue [$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>]); |
| }; |
| <span class="comment">// Add ident to buffer |
| </span>(SORT [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>:meta] </span>)<span class="kw-2">*</span>] |
| queue [ <span class="macro-nonterminal">$qitem</span>:ident $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [$( <span class="macro-nonterminal">$def </span>)<span class="kw-2">*</span>] |
| items [$( $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* |
| => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>:<span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} )<span class="kw-2">*</span>] |
| buf [$(<span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>]</span>)* => <span class="macro-nonterminal">$qitem </span>: UNIT [ ] ] |
| queue [$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>]); |
| }; |
| <span class="comment">// Flush buffer on meta after ident |
| </span>(SORT [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$bitem</span>:ident: <span class="macro-nonterminal">$bmode</span>:tt [$( <span class="macro-nonterminal">$bvar</span>:ident: <span class="macro-nonterminal">$btyp</span>:ty ),<span class="kw-2">*</span>] ] |
| queue [ <span class="attribute">#[<span class="macro-nonterminal">$qmeta</span>:meta] </span>$( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [$( <span class="macro-nonterminal">$def </span>)<span class="kw-2">*</span>] |
| <span class="kw">enum </span>[$( $(<span class="attribute">#[<span class="macro-nonterminal">$emeta</span>]</span>)* => <span class="macro-nonterminal">$eitem </span>$(( $(<span class="macro-nonterminal">$etyp</span>),* ))* )* |
| $(<span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>]</span>)* => <span class="macro-nonterminal">$bitem</span>: <span class="macro-nonterminal">$bmode </span>$(( $(<span class="macro-nonterminal">$btyp</span>),* ))<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>:<span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} )* |
| <span class="macro-nonterminal">$bitem</span>: <span class="macro-nonterminal">$bmode </span>[$( <span class="macro-nonterminal">$bvar</span>:<span class="macro-nonterminal">$btyp </span>),<span class="kw-2">*</span>] {} ] |
| buf [ <span class="attribute">#[<span class="macro-nonterminal">$qmeta</span>] </span>] |
| queue [$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>]); |
| }; |
| <span class="comment">// Add tuple enum-variant |
| </span>(SORT [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>:meta] </span>)* => <span class="macro-nonterminal">$bitem</span>:ident: UNIT [ ] ] |
| queue [($( <span class="macro-nonterminal">$qvar</span>:ident: <span class="macro-nonterminal">$qtyp</span>:ty ),+) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [$( <span class="macro-nonterminal">$def </span>)<span class="kw-2">*</span>] |
| items [$( $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>:<span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} )<span class="kw-2">*</span>] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>] </span>)* => <span class="macro-nonterminal">$bitem</span>: TUPLE [$( <span class="macro-nonterminal">$qvar</span>:<span class="macro-nonterminal">$qtyp </span>),<span class="kw-2">*</span>] ] |
| queue [$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>] |
| ); |
| }; |
| <span class="comment">// Add struct enum-variant - e.g. { descr: &'static str } |
| </span>(SORT [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>:meta] </span>)* => <span class="macro-nonterminal">$bitem</span>:ident: UNIT [ ] ] |
| queue [{ $( <span class="macro-nonterminal">$qvar</span>:ident: <span class="macro-nonterminal">$qtyp</span>:ty ),+} $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [$( <span class="macro-nonterminal">$def </span>)<span class="kw-2">*</span>] |
| items [$( $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>:<span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} )<span class="kw-2">*</span>] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>] </span>)* => <span class="macro-nonterminal">$bitem</span>: STRUCT [$( <span class="macro-nonterminal">$qvar</span>:<span class="macro-nonterminal">$qtyp </span>),<span class="kw-2">*</span>] ] |
| queue [$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>]); |
| }; |
| <span class="comment">// Add struct enum-variant, with excess comma - e.g. { descr: &'static str, } |
| </span>(SORT [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>:meta] </span>)* => <span class="macro-nonterminal">$bitem</span>:ident: UNIT [ ] ] |
| queue [{$( <span class="macro-nonterminal">$qvar</span>:ident: <span class="macro-nonterminal">$qtyp</span>:ty ),+ ,} $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [$( <span class="macro-nonterminal">$def </span>)<span class="kw-2">*</span>] |
| items [$( $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>:<span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} )<span class="kw-2">*</span>] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>] </span>)* => <span class="macro-nonterminal">$bitem</span>: STRUCT [$( <span class="macro-nonterminal">$qvar</span>:<span class="macro-nonterminal">$qtyp </span>),<span class="kw-2">*</span>] ] |
| queue [$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>]); |
| }; |
| <span class="comment">// Add braces and flush always on braces |
| </span>(SORT [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$bitem</span>:ident: <span class="macro-nonterminal">$bmode</span>:tt [$( <span class="macro-nonterminal">$bvar</span>:ident: <span class="macro-nonterminal">$btyp</span>:ty ),<span class="kw-2">*</span>] ] |
| queue [ {$( <span class="macro-nonterminal">$qfuncs</span>:tt )<span class="kw-2">*</span>} $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [$( <span class="macro-nonterminal">$def </span>)<span class="kw-2">*</span>] |
| items [$( $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>:<span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} )* |
| $(<span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>]</span>)* => <span class="macro-nonterminal">$bitem</span>: <span class="macro-nonterminal">$bmode </span>[$( <span class="macro-nonterminal">$bvar</span>:<span class="macro-nonterminal">$btyp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$qfuncs </span>)<span class="kw-2">*</span>} ] |
| buf [ ] |
| queue [$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>]); |
| }; |
| <span class="comment">// Flush buffer on double ident |
| </span>(SORT [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$bitem</span>:ident: <span class="macro-nonterminal">$bmode</span>:tt [$( <span class="macro-nonterminal">$bvar</span>:ident: <span class="macro-nonterminal">$btyp</span>:ty ),<span class="kw-2">*</span>] ] |
| queue [ <span class="macro-nonterminal">$qitem</span>:ident $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [$( <span class="macro-nonterminal">$def </span>)<span class="kw-2">*</span>] |
| items [$( $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>:<span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} )* |
| $(<span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>]</span>)* => <span class="macro-nonterminal">$bitem</span>: <span class="macro-nonterminal">$bmode </span>[$( <span class="macro-nonterminal">$bvar</span>:<span class="macro-nonterminal">$btyp </span>),<span class="kw-2">*</span>] {} ] |
| buf [ => <span class="macro-nonterminal">$qitem </span>: UNIT [ ] ] |
| queue [$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>]); |
| }; |
| <span class="comment">// Flush buffer on end |
| </span>(SORT [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| items [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$( <span class="macro-nonterminal">$ivar</span>:ident: <span class="macro-nonterminal">$ityp</span>:ty ),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$ifuncs</span>:tt )<span class="kw-2">*</span>} )* ] |
| buf [$( <span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$bitem</span>:ident: <span class="macro-nonterminal">$bmode</span>:tt [$( <span class="macro-nonterminal">$bvar</span>:ident: <span class="macro-nonterminal">$btyp</span>:ty ),<span class="kw-2">*</span>] ] |
| queue [ ] |
| ) => { |
| <span class="macro">quick_error!</span>(SORT [$( <span class="macro-nonterminal">$def </span>)<span class="kw-2">*</span>] |
| items [$( $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* => <span class="macro-nonterminal">$iitem</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$ivar</span>:<span class="macro-nonterminal">$ityp </span>),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$ifuncs </span>)<span class="kw-2">*</span>} )* |
| $(<span class="attribute">#[<span class="macro-nonterminal">$bmeta</span>]</span>)* => <span class="macro-nonterminal">$bitem</span>: <span class="macro-nonterminal">$bmode </span>[$( <span class="macro-nonterminal">$bvar</span>:<span class="macro-nonterminal">$btyp </span>),<span class="kw-2">*</span>] {} ] |
| buf [ ] |
| queue [ ]); |
| }; |
| <span class="comment">// Public enum (Queue Empty) |
| </span>(ENUM_DEFINITION [<span class="kw">pub enum </span><span class="macro-nonterminal">$name</span>:ident $( <span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta] </span>)<span class="kw-2">*</span>] |
| body [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident ($(($( <span class="macro-nonterminal">$ttyp</span>:ty ),+))<span class="kw-2">*</span>) {$({$( <span class="macro-nonterminal">$svar</span>:ident: <span class="macro-nonterminal">$styp</span>:ty ),<span class="kw-2">*</span>})<span class="kw-2">*</span>} )* ] |
| queue [ ] |
| ) => { |
| <span class="attribute">#[allow(unknown_lints)] </span><span class="comment">// no unused_doc_comments in older rust |
| </span><span class="attribute">#[allow(renamed_and_removed_lints)] |
| #[allow(unused_doc_comment)] |
| #[allow(unused_doc_comments)] |
| </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)* |
| <span class="kw">pub enum </span><span class="macro-nonterminal">$name </span>{ |
| $( |
| $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* |
| <span class="macro-nonterminal">$iitem </span>$(($( <span class="macro-nonterminal">$ttyp </span>),<span class="kw-2">*</span>))* $({$( <span class="macro-nonterminal">$svar</span>: <span class="macro-nonterminal">$styp </span>),<span class="kw-2">*</span>})<span class="kw-2">*</span>, |
| )* |
| } |
| }; |
| <span class="comment">// Private enum (Queue Empty) |
| </span>(ENUM_DEFINITION [<span class="kw">enum </span><span class="macro-nonterminal">$name</span>:ident $( <span class="attribute">#[<span class="macro-nonterminal">$meta</span>:meta] </span>)<span class="kw-2">*</span>] |
| body [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident ($(($( <span class="macro-nonterminal">$ttyp</span>:ty ),+))<span class="kw-2">*</span>) {$({$( <span class="macro-nonterminal">$svar</span>:ident: <span class="macro-nonterminal">$styp</span>:ty ),<span class="kw-2">*</span>})<span class="kw-2">*</span>} )* ] |
| queue [ ] |
| ) => { |
| <span class="attribute">#[allow(unknown_lints)] </span><span class="comment">// no unused_doc_comments in older rust |
| </span><span class="attribute">#[allow(renamed_and_removed_lints)] |
| #[allow(unused_doc_comment)] |
| #[allow(unused_doc_comments)] |
| </span>$(<span class="attribute">#[<span class="macro-nonterminal">$meta</span>]</span>)* |
| <span class="kw">enum </span><span class="macro-nonterminal">$name </span>{ |
| $( |
| $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* |
| <span class="macro-nonterminal">$iitem </span>$(($( <span class="macro-nonterminal">$ttyp </span>),<span class="kw-2">*</span>))* $({$( <span class="macro-nonterminal">$svar</span>: <span class="macro-nonterminal">$styp </span>),<span class="kw-2">*</span>})<span class="kw-2">*</span>, |
| )* |
| } |
| }; |
| <span class="comment">// Unit variant |
| </span>(ENUM_DEFINITION [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| body [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident ($(($( <span class="macro-nonterminal">$ttyp</span>:ty ),+))<span class="kw-2">*</span>) {$({$( <span class="macro-nonterminal">$svar</span>:ident: <span class="macro-nonterminal">$styp</span>:ty ),<span class="kw-2">*</span>})<span class="kw-2">*</span>} )* ] |
| queue [$( <span class="attribute">#[<span class="macro-nonterminal">$qmeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$qitem</span>:ident: UNIT [ ] $( <span class="macro-nonterminal">$queue</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(ENUM_DEFINITION [ $(<span class="macro-nonterminal">$def</span>)* ] |
| body [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>] </span>)* => <span class="macro-nonterminal">$iitem </span>($(($( <span class="macro-nonterminal">$ttyp </span>),+))<span class="kw-2">*</span>) {$({$( <span class="macro-nonterminal">$svar</span>: <span class="macro-nonterminal">$styp </span>),<span class="kw-2">*</span>})<span class="kw-2">*</span>} )* |
| $( <span class="attribute">#[<span class="macro-nonterminal">$qmeta</span>] </span>)* => <span class="macro-nonterminal">$qitem </span>() {} ] |
| queue [ $(<span class="macro-nonterminal">$queue</span>)* ] |
| ); |
| }; |
| <span class="comment">// Tuple variant |
| </span>(ENUM_DEFINITION [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| body [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident ($(($( <span class="macro-nonterminal">$ttyp</span>:ty ),+))<span class="kw-2">*</span>) {$({$( <span class="macro-nonterminal">$svar</span>:ident: <span class="macro-nonterminal">$styp</span>:ty ),<span class="kw-2">*</span>})<span class="kw-2">*</span>} )* ] |
| queue [$( <span class="attribute">#[<span class="macro-nonterminal">$qmeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$qitem</span>:ident: TUPLE [$( <span class="macro-nonterminal">$qvar</span>:ident: <span class="macro-nonterminal">$qtyp</span>:ty ),+] $( <span class="macro-nonterminal">$queue</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(ENUM_DEFINITION [ $(<span class="macro-nonterminal">$def</span>)* ] |
| body [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>] </span>)* => <span class="macro-nonterminal">$iitem </span>($(($( <span class="macro-nonterminal">$ttyp </span>),+))<span class="kw-2">*</span>) {$({$( <span class="macro-nonterminal">$svar</span>: <span class="macro-nonterminal">$styp </span>),<span class="kw-2">*</span>})<span class="kw-2">*</span>} )* |
| $( <span class="attribute">#[<span class="macro-nonterminal">$qmeta</span>] </span>)* => <span class="macro-nonterminal">$qitem </span>(($( <span class="macro-nonterminal">$qtyp </span>),<span class="kw-2">*</span>)) {} ] |
| queue [ $(<span class="macro-nonterminal">$queue</span>)* ] |
| ); |
| }; |
| <span class="comment">// Struct variant |
| </span>(ENUM_DEFINITION [$( <span class="macro-nonterminal">$def</span>:tt )<span class="kw-2">*</span>] |
| body [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$iitem</span>:ident ($(($( <span class="macro-nonterminal">$ttyp</span>:ty ),+))<span class="kw-2">*</span>) {$({$( <span class="macro-nonterminal">$svar</span>:ident: <span class="macro-nonterminal">$styp</span>:ty ),<span class="kw-2">*</span>})<span class="kw-2">*</span>} )* ] |
| queue [$( <span class="attribute">#[<span class="macro-nonterminal">$qmeta</span>:meta] </span>)* |
| => <span class="macro-nonterminal">$qitem</span>:ident: STRUCT [$( <span class="macro-nonterminal">$qvar</span>:ident: <span class="macro-nonterminal">$qtyp</span>:ty ),<span class="kw-2">*</span>] $( <span class="macro-nonterminal">$queue</span>:tt )<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(ENUM_DEFINITION [ $(<span class="macro-nonterminal">$def</span>)* ] |
| body [$($( <span class="attribute">#[<span class="macro-nonterminal">$imeta</span>] </span>)* => <span class="macro-nonterminal">$iitem </span>($(($( <span class="macro-nonterminal">$ttyp </span>),+))<span class="kw-2">*</span>) {$({$( <span class="macro-nonterminal">$svar</span>: <span class="macro-nonterminal">$styp </span>),<span class="kw-2">*</span>})<span class="kw-2">*</span>} )* |
| $( <span class="attribute">#[<span class="macro-nonterminal">$qmeta</span>] </span>)* => <span class="macro-nonterminal">$qitem </span>() {{$( <span class="macro-nonterminal">$qvar</span>: <span class="macro-nonterminal">$qtyp </span>),<span class="kw-2">*</span>}} ] |
| queue [ $(<span class="macro-nonterminal">$queue</span>)* ] |
| ); |
| }; |
| (IMPLEMENTATIONS |
| <span class="macro-nonterminal">$name</span>:ident {$( |
| <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt [$(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta]</span>)<span class="kw-2">*</span>] [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] {$( <span class="macro-nonterminal">$funcs</span>:tt )<span class="kw-2">*</span>} |
| )<span class="kw-2">*</span>} |
| ) => { |
| <span class="attribute">#[allow(unused)] |
| #[allow(unknown_lints)] </span><span class="comment">// no unused_doc_comments in older rust |
| </span><span class="attribute">#[allow(renamed_and_removed_lints)] |
| #[allow(unused_doc_comment)] |
| #[allow(unused_doc_comments)] |
| </span><span class="kw">impl </span>::std::fmt::Display <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, fmt: <span class="kw-2">&mut </span>::std::fmt::Formatter) |
| -> ::std::fmt::Result |
| { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| $( |
| $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* |
| <span class="macro">quick_error!</span>(ITEM_PATTERN |
| <span class="macro-nonterminal">$name $item</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="kw-2">ref </span><span class="macro-nonterminal">$var </span>),<span class="kw-2">*</span>] |
| ) => { |
| <span class="kw">let </span>display_fn = <span class="macro">quick_error!</span>(FIND_DISPLAY_IMPL |
| <span class="macro-nonterminal">$name $item</span>: <span class="macro-nonterminal">$imode |
| </span>{$( <span class="macro-nonterminal">$funcs </span>)<span class="kw-2">*</span>}); |
| |
| display_fn(<span class="self">self</span>, fmt) |
| } |
| )* |
| } |
| } |
| } |
| <span class="attribute">#[allow(unused)] |
| #[allow(unknown_lints)] </span><span class="comment">// no unused_doc_comments in older rust |
| </span><span class="attribute">#[allow(renamed_and_removed_lints)] |
| #[allow(unused_doc_comment)] |
| #[allow(unused_doc_comments)] |
| </span><span class="kw">impl </span>::std::error::Error <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ |
| <span class="kw">fn </span>cause(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>::std::error::Error> { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| $( |
| $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>]</span>)* |
| <span class="macro">quick_error!</span>(ITEM_PATTERN |
| <span class="macro-nonterminal">$name $item</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="kw-2">ref </span><span class="macro-nonterminal">$var </span>),<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro">quick_error!</span>(FIND_CAUSE_IMPL |
| <span class="macro-nonterminal">$item</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$var </span>),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$funcs </span>)<span class="kw-2">*</span>}) |
| } |
| )* |
| } |
| } |
| } |
| $( |
| <span class="macro">quick_error!</span>(FIND_FROM_IMPL |
| <span class="macro-nonterminal">$name $item</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$funcs </span>)<span class="kw-2">*</span>}); |
| )* |
| $( |
| <span class="macro">quick_error!</span>(FIND_CONTEXT_IMPL |
| <span class="macro-nonterminal">$name $item</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$funcs </span>)<span class="kw-2">*</span>}); |
| )* |
| }; |
| (FIND_DISPLAY_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| { display(<span class="macro-nonterminal">$self_</span>:tt) -> ($( <span class="macro-nonterminal">$exprs</span>:tt )<span class="kw-2">*</span>) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| |<span class="macro">quick_error!</span>(IDENT <span class="macro-nonterminal">$self_</span>): <span class="kw-2">&</span><span class="macro-nonterminal">$name</span>, f: <span class="kw-2">&mut </span>::std::fmt::Formatter| { <span class="macro">write!</span>(f, $( <span class="macro-nonterminal">$exprs </span>)<span class="kw-2">*</span>) } |
| }; |
| (FIND_DISPLAY_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| { display(<span class="macro-nonterminal">$pattern</span>:expr) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| |<span class="kw">_</span>, f: <span class="kw-2">&mut </span>::std::fmt::Formatter| { <span class="macro">write!</span>(f, <span class="macro-nonterminal">$pattern</span>) } |
| }; |
| (FIND_DISPLAY_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| { display(<span class="macro-nonterminal">$pattern</span>:expr, $( <span class="macro-nonterminal">$exprs</span>:tt )<span class="kw-2">*</span>) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| |<span class="kw">_</span>, f: <span class="kw-2">&mut </span>::std::fmt::Formatter| { <span class="macro">write!</span>(f, <span class="macro-nonterminal">$pattern</span>, $( <span class="macro-nonterminal">$exprs </span>)<span class="kw-2">*</span>) } |
| }; |
| (FIND_DISPLAY_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| { <span class="macro-nonterminal">$t</span>:tt $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| <span class="macro">quick_error!</span>(FIND_DISPLAY_IMPL |
| <span class="macro-nonterminal">$name $item</span>: <span class="macro-nonterminal">$imode |
| </span>{$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>}) |
| }; |
| (FIND_DISPLAY_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| { } |
| ) => { |
| |self_: <span class="kw-2">&</span><span class="macro-nonterminal">$name</span>, f: <span class="kw-2">&mut </span>::std::fmt::Formatter| { |
| <span class="macro">write!</span>(f, <span class="string">"{:?}"</span>, self_) |
| } |
| }; |
| (FIND_DESCRIPTION_IMPL <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt <span class="macro-nonterminal">$me</span>:ident <span class="macro-nonterminal">$fmt</span>:ident |
| [$( <span class="macro-nonterminal">$var</span>:ident ),<span class="kw-2">*</span>] |
| { description(<span class="macro-nonterminal">$expr</span>:expr) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => {}; |
| (FIND_DESCRIPTION_IMPL <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt <span class="macro-nonterminal">$me</span>:ident <span class="macro-nonterminal">$fmt</span>:ident |
| [$( <span class="macro-nonterminal">$var</span>:ident ),<span class="kw-2">*</span>] |
| { <span class="macro-nonterminal">$t</span>:tt $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => {}; |
| (FIND_DESCRIPTION_IMPL <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt <span class="macro-nonterminal">$me</span>:ident <span class="macro-nonterminal">$fmt</span>:ident |
| [$( <span class="macro-nonterminal">$var</span>:ident ),<span class="kw-2">*</span>] |
| { } |
| ) => {}; |
| (FIND_CAUSE_IMPL <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| [$( <span class="macro-nonterminal">$var</span>:ident ),<span class="kw-2">*</span>] |
| { cause(<span class="macro-nonterminal">$expr</span>:expr) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| <span class="prelude-val">Some</span>(<span class="macro-nonterminal">$expr</span>) |
| }; |
| (FIND_CAUSE_IMPL <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| [$( <span class="macro-nonterminal">$var</span>:ident ),<span class="kw-2">*</span>] |
| { <span class="macro-nonterminal">$t</span>:tt $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| <span class="macro">quick_error!</span>(FIND_CAUSE_IMPL |
| <span class="macro-nonterminal">$item</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$var </span>),<span class="kw-2">*</span>] |
| { $(<span class="macro-nonterminal">$tail</span>)* }) |
| }; |
| (FIND_CAUSE_IMPL <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| [$( <span class="macro-nonterminal">$var</span>:ident ),<span class="kw-2">*</span>] |
| { } |
| ) => { |
| <span class="prelude-val">None |
| </span>}; |
| <span class="comment">// ----------------------------- FROM IMPL -------------------------- |
| </span>(FIND_FROM_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { from() $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| $( |
| <span class="kw">impl </span>From<<span class="macro-nonterminal">$typ</span>> <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ |
| <span class="kw">fn </span>from(<span class="macro-nonterminal">$var</span>: <span class="macro-nonterminal">$typ</span>) -> <span class="macro-nonterminal">$name </span>{ |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item</span>(<span class="macro-nonterminal">$var</span>) |
| } |
| } |
| )* |
| <span class="macro">quick_error!</span>(FIND_FROM_IMPL |
| <span class="macro-nonterminal">$name $item</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>}); |
| }; |
| (FIND_FROM_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: UNIT |
| [ ] |
| { from(<span class="macro-nonterminal">$ftyp</span>:ty) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| <span class="kw">impl </span>From<<span class="macro-nonterminal">$ftyp</span>> <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ |
| <span class="kw">fn </span>from(_discarded_error: <span class="macro-nonterminal">$ftyp</span>) -> <span class="macro-nonterminal">$name </span>{ |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item |
| </span>} |
| } |
| <span class="macro">quick_error!</span>(FIND_FROM_IMPL |
| <span class="macro-nonterminal">$name $item</span>: UNIT [ ] |
| {$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>}); |
| }; |
| (FIND_FROM_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: TUPLE |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { from(<span class="macro-nonterminal">$fvar</span>:ident: <span class="macro-nonterminal">$ftyp</span>:ty) -> ($( <span class="macro-nonterminal">$texpr</span>:expr ),<span class="kw-2">*</span>) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| <span class="kw">impl </span>From<<span class="macro-nonterminal">$ftyp</span>> <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ |
| <span class="kw">fn </span>from(<span class="macro-nonterminal">$fvar</span>: <span class="macro-nonterminal">$ftyp</span>) -> <span class="macro-nonterminal">$name </span>{ |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item</span>($( <span class="macro-nonterminal">$texpr </span>),<span class="kw-2">*</span>) |
| } |
| } |
| <span class="macro">quick_error!</span>(FIND_FROM_IMPL |
| <span class="macro-nonterminal">$name $item</span>: TUPLE [$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| { $(<span class="macro-nonterminal">$tail</span>)* }); |
| }; |
| (FIND_FROM_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: STRUCT |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { from(<span class="macro-nonterminal">$fvar</span>:ident: <span class="macro-nonterminal">$ftyp</span>:ty) -> {$( <span class="macro-nonterminal">$tvar</span>:ident: <span class="macro-nonterminal">$texpr</span>:expr ),<span class="kw-2">*</span>} $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| <span class="kw">impl </span>From<<span class="macro-nonterminal">$ftyp</span>> <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ |
| <span class="kw">fn </span>from(<span class="macro-nonterminal">$fvar</span>: <span class="macro-nonterminal">$ftyp</span>) -> <span class="macro-nonterminal">$name </span>{ |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item </span>{ |
| $( <span class="macro-nonterminal">$tvar</span>: <span class="macro-nonterminal">$texpr </span>),* |
| } |
| } |
| } |
| <span class="macro">quick_error!</span>(FIND_FROM_IMPL |
| <span class="macro-nonterminal">$name $item</span>: STRUCT [$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| { $(<span class="macro-nonterminal">$tail</span>)* }); |
| }; |
| (FIND_FROM_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { <span class="macro-nonterminal">$t</span>:tt $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| <span class="macro">quick_error!</span>(FIND_FROM_IMPL |
| <span class="macro-nonterminal">$name $item</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>} |
| ); |
| }; |
| (FIND_FROM_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { } |
| ) => { |
| }; |
| <span class="comment">// ----------------------------- CONTEXT IMPL -------------------------- |
| </span>(FIND_CONTEXT_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: TUPLE |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { context(<span class="macro-nonterminal">$cvar</span>:ident: AsRef<<span class="macro-nonterminal">$ctyp</span>:ty>, <span class="macro-nonterminal">$fvar</span>:ident: <span class="macro-nonterminal">$ftyp</span>:ty) |
| -> ($( <span class="macro-nonterminal">$texpr</span>:expr ),<span class="kw-2">*</span>) $( <span class="macro-nonterminal">$tail</span>:tt )* } |
| ) => { |
| <span class="kw">impl</span><T: AsRef<<span class="macro-nonterminal">$ctyp</span>>> From<<span class="macro-nonterminal">$crate::Context</span><T, <span class="macro-nonterminal">$ftyp</span>>> <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ |
| <span class="kw">fn </span>from( |
| <span class="macro-nonterminal">$crate::Context</span>(<span class="macro-nonterminal">$cvar</span>, <span class="macro-nonterminal">$fvar</span>): <span class="macro-nonterminal">$crate::Context</span><T, <span class="macro-nonterminal">$ftyp</span>>) |
| -> <span class="macro-nonterminal">$name |
| </span>{ |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item</span>($( <span class="macro-nonterminal">$texpr </span>),<span class="kw-2">*</span>) |
| } |
| } |
| <span class="macro">quick_error!</span>(FIND_CONTEXT_IMPL |
| <span class="macro-nonterminal">$name $item</span>: TUPLE [$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| { $(<span class="macro-nonterminal">$tail</span>)* }); |
| }; |
| (FIND_CONTEXT_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: TUPLE |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { context(<span class="macro-nonterminal">$cvar</span>:ident: <span class="macro-nonterminal">$ctyp</span>:ty, <span class="macro-nonterminal">$fvar</span>:ident: <span class="macro-nonterminal">$ftyp</span>:ty) |
| -> ($( <span class="macro-nonterminal">$texpr</span>:expr ),<span class="kw-2">*</span>) $( <span class="macro-nonterminal">$tail</span>:tt )* } |
| ) => { |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> From<<span class="macro-nonterminal">$crate::Context</span><<span class="macro-nonterminal">$ctyp</span>, <span class="macro-nonterminal">$ftyp</span>>> <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ |
| <span class="kw">fn </span>from( |
| <span class="macro-nonterminal">$crate::Context</span>(<span class="macro-nonterminal">$cvar</span>, <span class="macro-nonterminal">$fvar</span>): <span class="macro-nonterminal">$crate::Context</span><<span class="macro-nonterminal">$ctyp</span>, <span class="macro-nonterminal">$ftyp</span>>) |
| -> <span class="macro-nonterminal">$name |
| </span>{ |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item</span>($( <span class="macro-nonterminal">$texpr </span>),<span class="kw-2">*</span>) |
| } |
| } |
| <span class="macro">quick_error!</span>(FIND_CONTEXT_IMPL |
| <span class="macro-nonterminal">$name $item</span>: TUPLE [$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| { $(<span class="macro-nonterminal">$tail</span>)* }); |
| }; |
| (FIND_CONTEXT_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: STRUCT |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { context(<span class="macro-nonterminal">$cvar</span>:ident: AsRef<<span class="macro-nonterminal">$ctyp</span>:ty>, <span class="macro-nonterminal">$fvar</span>:ident: <span class="macro-nonterminal">$ftyp</span>:ty) |
| -> {$( <span class="macro-nonterminal">$tvar</span>:ident: <span class="macro-nonterminal">$texpr</span>:expr ),<span class="kw-2">*</span>} $( <span class="macro-nonterminal">$tail</span>:tt )* } |
| ) => { |
| <span class="kw">impl</span><T: AsRef<<span class="macro-nonterminal">$ctyp</span>>> From<<span class="macro-nonterminal">$crate::Context</span><T, <span class="macro-nonterminal">$ftyp</span>>> <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ |
| <span class="kw">fn </span>from( |
| <span class="macro-nonterminal">$crate::Context</span>(<span class="macro-nonterminal">$cvar</span>, <span class="macro-nonterminal">$fvar</span>): <span class="macro-nonterminal">$crate::Context</span><<span class="macro-nonterminal">$ctyp</span>, <span class="macro-nonterminal">$ftyp</span>>) |
| -> <span class="macro-nonterminal">$name |
| </span>{ |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item </span>{ |
| $( <span class="macro-nonterminal">$tvar</span>: <span class="macro-nonterminal">$texpr </span>),* |
| } |
| } |
| } |
| <span class="macro">quick_error!</span>(FIND_CONTEXT_IMPL |
| <span class="macro-nonterminal">$name $item</span>: STRUCT [$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| { $(<span class="macro-nonterminal">$tail</span>)* }); |
| }; |
| (FIND_CONTEXT_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: STRUCT |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { context(<span class="macro-nonterminal">$cvar</span>:ident: <span class="macro-nonterminal">$ctyp</span>:ty, <span class="macro-nonterminal">$fvar</span>:ident: <span class="macro-nonterminal">$ftyp</span>:ty) |
| -> {$( <span class="macro-nonterminal">$tvar</span>:ident: <span class="macro-nonterminal">$texpr</span>:expr ),<span class="kw-2">*</span>} $( <span class="macro-nonterminal">$tail</span>:tt )* } |
| ) => { |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> From<<span class="macro-nonterminal">$crate::Context</span><<span class="macro-nonterminal">$ctyp</span>, <span class="macro-nonterminal">$ftyp</span>>> <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ |
| <span class="kw">fn </span>from( |
| <span class="macro-nonterminal">$crate::Context</span>(<span class="macro-nonterminal">$cvar</span>, <span class="macro-nonterminal">$fvar</span>): <span class="macro-nonterminal">$crate::Context</span><<span class="macro-nonterminal">$ctyp</span>, <span class="macro-nonterminal">$ftyp</span>>) |
| -> <span class="macro-nonterminal">$name |
| </span>{ |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item </span>{ |
| $( <span class="macro-nonterminal">$tvar</span>: <span class="macro-nonterminal">$texpr </span>),* |
| } |
| } |
| } |
| <span class="macro">quick_error!</span>(FIND_CONTEXT_IMPL |
| <span class="macro-nonterminal">$name $item</span>: STRUCT [$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| { $(<span class="macro-nonterminal">$tail</span>)* }); |
| }; |
| (FIND_CONTEXT_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { <span class="macro-nonterminal">$t</span>:tt $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>} |
| ) => { |
| <span class="macro">quick_error!</span>(FIND_CONTEXT_IMPL |
| <span class="macro-nonterminal">$name $item</span>: <span class="macro-nonterminal">$imode </span>[$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>] |
| {$( <span class="macro-nonterminal">$tail </span>)<span class="kw-2">*</span>} |
| ); |
| }; |
| (FIND_CONTEXT_IMPL <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: <span class="macro-nonterminal">$imode</span>:tt |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| { } |
| ) => { |
| }; |
| <span class="comment">// ----------------------------- ITEM IMPL -------------------------- |
| </span>(ITEM_BODY $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta]</span>)* <span class="macro-nonterminal">$item</span>:ident: UNIT |
| ) => { }; |
| (ITEM_BODY $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta]</span>)* <span class="macro-nonterminal">$item</span>:ident: TUPLE |
| [$( <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| ) => { |
| ($( <span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>) |
| }; |
| (ITEM_BODY $(<span class="attribute">#[<span class="macro-nonterminal">$imeta</span>:meta]</span>)* <span class="macro-nonterminal">$item</span>:ident: STRUCT |
| [$( <span class="macro-nonterminal">$var</span>:ident: <span class="macro-nonterminal">$typ</span>:ty ),<span class="kw-2">*</span>] |
| ) => { |
| {$( <span class="macro-nonterminal">$var</span>:<span class="macro-nonterminal">$typ </span>),<span class="kw-2">*</span>} |
| }; |
| (ITEM_PATTERN <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: UNIT [] |
| ) => { |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item |
| </span>}; |
| (ITEM_PATTERN <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: TUPLE |
| [$( <span class="kw-2">ref </span><span class="macro-nonterminal">$var</span>:ident ),<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item </span>($( <span class="kw-2">ref </span><span class="macro-nonterminal">$var </span>),<span class="kw-2">*</span>) |
| }; |
| (ITEM_PATTERN <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$item</span>:ident: STRUCT |
| [$( <span class="kw-2">ref </span><span class="macro-nonterminal">$var</span>:ident ),<span class="kw-2">*</span>] |
| ) => { |
| <span class="macro-nonterminal">$name</span>::<span class="macro-nonterminal">$item </span>{$( <span class="kw-2">ref </span><span class="macro-nonterminal">$var </span>),<span class="kw-2">*</span>} |
| }; |
| <span class="comment">// This one should match all allowed sequences in "funcs" but not match |
| // anything else. |
| // This is to contrast FIND_* clauses which just find stuff they need and |
| // skip everything else completely |
| </span>(ERROR_CHECK <span class="macro-nonterminal">$imode</span>:tt display(<span class="macro-nonterminal">$self_</span>:tt) -> ($( <span class="macro-nonterminal">$exprs</span>:tt )<span class="kw-2">*</span>) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK <span class="macro-nonterminal">$imode </span>$(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| (ERROR_CHECK <span class="macro-nonterminal">$imode</span>:tt display(<span class="macro-nonterminal">$pattern</span>: expr) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK <span class="macro-nonterminal">$imode </span>$(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| (ERROR_CHECK <span class="macro-nonterminal">$imode</span>:tt display(<span class="macro-nonterminal">$pattern</span>: expr, $( <span class="macro-nonterminal">$exprs</span>:tt )<span class="kw-2">*</span>) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK <span class="macro-nonterminal">$imode </span>$(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| (ERROR_CHECK <span class="macro-nonterminal">$imode</span>:tt description(<span class="macro-nonterminal">$expr</span>:expr) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK <span class="macro-nonterminal">$imode </span>$(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| (ERROR_CHECK <span class="macro-nonterminal">$imode</span>:tt cause(<span class="macro-nonterminal">$expr</span>:expr) $(<span class="macro-nonterminal">$tail</span>:tt)<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK <span class="macro-nonterminal">$imode </span>$(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| (ERROR_CHECK <span class="macro-nonterminal">$imode</span>:tt from() $(<span class="macro-nonterminal">$tail</span>:tt)<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK <span class="macro-nonterminal">$imode </span>$(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| (ERROR_CHECK <span class="macro-nonterminal">$imode</span>:tt from(<span class="macro-nonterminal">$ftyp</span>:ty) $(<span class="macro-nonterminal">$tail</span>:tt)<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK <span class="macro-nonterminal">$imode </span>$(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| (ERROR_CHECK TUPLE from(<span class="macro-nonterminal">$fvar</span>:ident: <span class="macro-nonterminal">$ftyp</span>:ty) -> ($( <span class="macro-nonterminal">$e</span>:expr ),<span class="kw-2">*</span>) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK TUPLE $(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| (ERROR_CHECK STRUCT from(<span class="macro-nonterminal">$fvar</span>:ident: <span class="macro-nonterminal">$ftyp</span>:ty) -> {$( <span class="macro-nonterminal">$v</span>:ident: <span class="macro-nonterminal">$e</span>:expr ),<span class="kw-2">*</span>} $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK STRUCT $(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| |
| (ERROR_CHECK TUPLE context(<span class="macro-nonterminal">$cvar</span>:ident: <span class="macro-nonterminal">$ctyp</span>:ty, <span class="macro-nonterminal">$fvar</span>:ident: <span class="macro-nonterminal">$ftyp</span>:ty) |
| -> ($( <span class="macro-nonterminal">$e</span>:expr ),<span class="kw-2">*</span>) $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK TUPLE $(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| (ERROR_CHECK STRUCT context(<span class="macro-nonterminal">$cvar</span>:ident: <span class="macro-nonterminal">$ctyp</span>:ty, <span class="macro-nonterminal">$fvar</span>:ident: <span class="macro-nonterminal">$ftyp</span>:ty) |
| -> {$( <span class="macro-nonterminal">$v</span>:ident: <span class="macro-nonterminal">$e</span>:expr ),<span class="kw-2">*</span>} $( <span class="macro-nonterminal">$tail</span>:tt )<span class="kw-2">*</span>) |
| => { <span class="macro">quick_error!</span>(ERROR_CHECK STRUCT $(<span class="macro-nonterminal">$tail</span>)<span class="kw-2">*</span>); }; |
| |
| (ERROR_CHECK <span class="macro-nonterminal">$imode</span>:tt ) => {}; |
| <span class="comment">// Utility functions |
| </span>(IDENT <span class="macro-nonterminal">$ident</span>:ident) => { <span class="macro-nonterminal">$ident </span>} |
| } |
| |
| |
| <span class="doccomment">/// Generic context type |
| /// |
| /// Used mostly as a transport for `ResultExt::context` method |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>Context<X, E>(<span class="kw">pub </span>X, <span class="kw">pub </span>E); |
| |
| <span class="doccomment">/// Result extension trait adding a `context` method |
| </span><span class="kw">pub trait </span>ResultExt<T, E> { |
| <span class="doccomment">/// The method is use to add context information to current operation |
| /// |
| /// The context data is then used in error constructor to store additional |
| /// information within error. For example, you may add a filename as a |
| /// context for file operation. See crate documentation for the actual |
| /// example. |
| </span><span class="kw">fn </span>context<X>(<span class="self">self</span>, x: X) -> <span class="prelude-ty">Result</span><T, Context<X, E>>; |
| } |
| |
| <span class="kw">impl</span><T, E> ResultExt<T, E> <span class="kw">for </span><span class="prelude-ty">Result</span><T, E> { |
| <span class="kw">fn </span>context<X>(<span class="self">self</span>, x: X) -> <span class="prelude-ty">Result</span><T, Context<X, E>> { |
| <span class="self">self</span>.map_err(|e| Context(x, e)) |
| } |
| } |
| |
| |
| |
| <span class="attribute">#[cfg(test)] |
| #[allow(deprecated)] |
| </span><span class="kw">mod </span>test { |
| <span class="kw">use </span>std::num::{ParseFloatError, ParseIntError}; |
| <span class="kw">use </span>std::str::Utf8Error; |
| <span class="kw">use </span>std::string::FromUtf8Error; |
| <span class="kw">use </span>std::error::Error; |
| <span class="kw">use </span>std::path::{Path, PathBuf}; |
| |
| <span class="kw">use </span><span class="kw">super</span>::ResultExt; |
| |
| <span class="macro">quick_error! </span>{ |
| <span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub enum </span>Bare { |
| One |
| Two |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>bare_item_direct() { |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, Bare::One), <span class="string">"One"</span>.to_string()); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, Bare::One), <span class="string">"One"</span>.to_string()); |
| <span class="macro">assert!</span>(Bare::One.cause().is_none()); |
| } |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>bare_item_trait() { |
| <span class="kw">let </span>err: <span class="kw-2">&</span>Error = <span class="kw-2">&</span>Bare::Two; |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, err), <span class="string">"Two"</span>.to_string()); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err), <span class="string">"Two"</span>.to_string()); |
| <span class="macro">assert!</span>(err.cause().is_none()); |
| } |
| |
| <span class="macro">quick_error! </span>{ |
| <span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub enum </span>Wrapper wraps Wrapped { |
| One |
| Two(s: String) { |
| display(<span class="string">"two: {}"</span>, s) |
| from() |
| } |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>wrapper() { |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, Wrapper::from(Wrapped::One)), |
| <span class="string">"One"</span>.to_string()); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, |
| Wrapper::from(Wrapped::from(String::from(<span class="string">"hello"</span>)))), |
| <span class="string">"two: hello"</span>.to_string()); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, Wrapper::from(Wrapped::One)), |
| <span class="string">"Wrapper(One)"</span>.to_string()); |
| } |
| |
| <span class="macro">quick_error! </span>{ |
| <span class="attribute">#[derive(Debug, PartialEq)] |
| </span><span class="kw">pub enum </span>TupleWrapper { |
| <span class="doccomment">/// ParseFloat Error |
| </span>ParseFloatError(err: ParseFloatError) { |
| from() |
| display(<span class="string">"parse float error: {err}"</span>, err=err) |
| cause(err) |
| } |
| Other(descr: <span class="kw-2">&</span><span class="lifetime">'static </span>str) { |
| display(<span class="string">"Error: {}"</span>, descr) |
| } |
| <span class="doccomment">/// FromUtf8 Error |
| </span>FromUtf8Error(err: Utf8Error, source: Vec<u8>) { |
| cause(err) |
| display(me) -> (<span class="string">"{desc} at index {pos}: {err}"</span>, desc=<span class="string">"utf8 error"</span>, pos=err.valid_up_to(), err=err) |
| from(err: FromUtf8Error) -> (err.utf8_error().clone(), err.into_bytes()) |
| } |
| Discard { |
| from(<span class="kw-2">&</span><span class="lifetime">'static </span>str) |
| } |
| Singleton { |
| display(<span class="string">"Just a string"</span>) |
| } |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>tuple_wrapper_err() { |
| <span class="kw">let </span>cause = <span class="string">"one and a half times pi"</span>.parse::<f32>().unwrap_err(); |
| <span class="kw">let </span>err = TupleWrapper::ParseFloatError(cause.clone()); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, err), <span class="macro">format!</span>(<span class="string">"parse float error: {}"</span>, cause)); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err), <span class="macro">format!</span>(<span class="string">"ParseFloatError({:?})"</span>, cause)); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err.cause().unwrap()), <span class="macro">format!</span>(<span class="string">"{:?}"</span>, cause)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>tuple_wrapper_trait_str() { |
| <span class="kw">let </span>desc = <span class="string">"hello"</span>; |
| <span class="kw">let </span>err: <span class="kw-2">&</span>Error = <span class="kw-2">&</span>TupleWrapper::Other(desc); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, err), <span class="macro">format!</span>(<span class="string">"Error: {}"</span>, desc)); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err), <span class="macro">format!</span>(<span class="string">"Other({:?})"</span>, desc)); |
| <span class="macro">assert!</span>(err.cause().is_none()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>tuple_wrapper_trait_two_fields() { |
| <span class="kw">let </span>invalid_utf8: Vec<u8> = <span class="macro">vec!</span>[<span class="number">0</span>, <span class="number">159</span>, <span class="number">146</span>, <span class="number">150</span>]; |
| <span class="kw">let </span>cause = String::from_utf8(invalid_utf8.clone()).unwrap_err().utf8_error(); |
| <span class="kw">let </span>err: <span class="kw-2">&</span>Error = <span class="kw-2">&</span>TupleWrapper::FromUtf8Error(cause.clone(), invalid_utf8.clone()); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, err), <span class="macro">format!</span>(<span class="string">"{desc} at index {pos}: {cause}"</span>, desc=<span class="string">"utf8 error"</span>, pos=cause.valid_up_to(), cause=cause)); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err), <span class="macro">format!</span>(<span class="string">"FromUtf8Error({:?}, {:?})"</span>, cause, invalid_utf8)); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err.cause().unwrap()), <span class="macro">format!</span>(<span class="string">"{:?}"</span>, cause)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>tuple_wrapper_from() { |
| <span class="kw">let </span>cause = <span class="string">"one and a half times pi"</span>.parse::<f32>().unwrap_err(); |
| <span class="kw">let </span>err = TupleWrapper::ParseFloatError(cause.clone()); |
| <span class="kw">let </span>err_from: TupleWrapper = From::from(cause); |
| <span class="macro">assert_eq!</span>(err_from, err); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>tuple_wrapper_custom_from() { |
| <span class="kw">let </span>invalid_utf8: Vec<u8> = <span class="macro">vec!</span>[<span class="number">0</span>, <span class="number">159</span>, <span class="number">146</span>, <span class="number">150</span>]; |
| <span class="kw">let </span>cause = String::from_utf8(invalid_utf8.clone()).unwrap_err(); |
| <span class="kw">let </span>err = TupleWrapper::FromUtf8Error(cause.utf8_error().clone(), invalid_utf8); |
| <span class="kw">let </span>err_from: TupleWrapper = From::from(cause); |
| <span class="macro">assert_eq!</span>(err_from, err); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>tuple_wrapper_discard() { |
| <span class="kw">let </span>err: TupleWrapper = From::from(<span class="string">"hello"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, err), <span class="macro">format!</span>(<span class="string">"Discard"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err), <span class="macro">format!</span>(<span class="string">"Discard"</span>)); |
| <span class="macro">assert!</span>(err.cause().is_none()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>tuple_wrapper_singleton() { |
| <span class="kw">let </span>err: TupleWrapper = TupleWrapper::Singleton; |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, err), <span class="macro">format!</span>(<span class="string">"Just a string"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err), <span class="macro">format!</span>(<span class="string">"Singleton"</span>)); |
| <span class="macro">assert!</span>(err.cause().is_none()); |
| } |
| |
| <span class="macro">quick_error! </span>{ |
| <span class="attribute">#[derive(Debug, PartialEq)] |
| </span><span class="kw">pub enum </span>StructWrapper { |
| <span class="comment">// Utf8 Error |
| </span>Utf8Error{ err: Utf8Error, hint: <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'static </span>str> } { |
| cause(err) |
| display(me) -> (<span class="string">"{desc} at index {pos}: {err}"</span>, desc=<span class="string">"utf8 error"</span>, pos=err.valid_up_to(), err=err) |
| from(err: Utf8Error) -> { err: err, hint: <span class="prelude-val">None </span>} |
| } |
| <span class="comment">// Utf8 Error |
| </span>ExcessComma { descr: <span class="kw-2">&</span><span class="lifetime">'static </span>str, } { |
| display(<span class="string">"Error: {}"</span>, descr) |
| } |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>struct_wrapper_err() { |
| <span class="kw">let </span>invalid_utf8: Vec<u8> = <span class="macro">vec!</span>[<span class="number">0</span>, <span class="number">159</span>, <span class="number">146</span>, <span class="number">150</span>]; |
| <span class="kw">let </span>cause = String::from_utf8(invalid_utf8.clone()).unwrap_err().utf8_error(); |
| <span class="kw">let </span>err: <span class="kw-2">&</span>Error = <span class="kw-2">&</span>StructWrapper::Utf8Error{ err: cause.clone(), hint: <span class="prelude-val">Some</span>(<span class="string">"nonsense"</span>) }; |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, err), <span class="macro">format!</span>(<span class="string">"{desc} at index {pos}: {cause}"</span>, desc=<span class="string">"utf8 error"</span>, pos=cause.valid_up_to(), cause=cause)); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err), <span class="macro">format!</span>(<span class="string">"Utf8Error {{ err: {:?}, hint: {:?} }}"</span>, cause, <span class="prelude-val">Some</span>(<span class="string">"nonsense"</span>))); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err.cause().unwrap()), <span class="macro">format!</span>(<span class="string">"{:?}"</span>, cause)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>struct_wrapper_struct_from() { |
| <span class="kw">let </span>invalid_utf8: Vec<u8> = <span class="macro">vec!</span>[<span class="number">0</span>, <span class="number">159</span>, <span class="number">146</span>, <span class="number">150</span>]; |
| <span class="kw">let </span>cause = String::from_utf8(invalid_utf8.clone()).unwrap_err().utf8_error(); |
| <span class="kw">let </span>err = StructWrapper::Utf8Error{ err: cause.clone(), hint: <span class="prelude-val">None </span>}; |
| <span class="kw">let </span>err_from: StructWrapper = From::from(cause); |
| <span class="macro">assert_eq!</span>(err_from, err); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>struct_wrapper_excess_comma() { |
| <span class="kw">let </span>descr = <span class="string">"hello"</span>; |
| <span class="kw">let </span>err = StructWrapper::ExcessComma { descr: descr }; |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, err), <span class="macro">format!</span>(<span class="string">"Error: {}"</span>, descr)); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, err), <span class="macro">format!</span>(<span class="string">"ExcessComma {{ descr: {:?} }}"</span>, descr)); |
| <span class="macro">assert!</span>(err.cause().is_none()); |
| } |
| |
| <span class="macro">quick_error! </span>{ |
| <span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub enum </span>ContextErr { |
| Float(src: String, err: ParseFloatError) { |
| context(s: <span class="kw-2">&</span><span class="lifetime">'a </span>str, e: ParseFloatError) -> (s.to_string(), e) |
| display(<span class="string">"Float error {:?}: {}"</span>, src, err) |
| } |
| Int { src: String, err: ParseIntError } { |
| context(s: <span class="kw-2">&</span><span class="lifetime">'a </span>str, e: ParseIntError) |
| -> {src: s.to_string(), err: e} |
| display(<span class="string">"Int error {:?}: {}"</span>, src, err) |
| } |
| Utf8(path: PathBuf, err: Utf8Error) { |
| context(p: AsRef<Path>, e: Utf8Error) |
| -> (p.as_ref().to_path_buf(), e) |
| display(<span class="string">"Path error at {:?}: {}"</span>, path, err) |
| } |
| Utf8Str(s: String, err: ::std::io::Error) { |
| context(s: AsRef<str>, e: ::std::io::Error) |
| -> (s.as_ref().to_string(), e) |
| display(<span class="string">"Str error {:?}: {}"</span>, s, err) |
| } |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>parse_float_error() { |
| <span class="kw">fn </span>parse_float(s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><f32, ContextErr> { |
| <span class="prelude-val">Ok</span>(<span class="macro">try!</span>(s.parse().context(s))) |
| } |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, parse_float(<span class="string">"12ab"</span>).unwrap_err()), |
| <span class="string">r#"Float error "12ab": invalid float literal"#</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>parse_int_error() { |
| <span class="kw">fn </span>parse_int(s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><i32, ContextErr> { |
| <span class="prelude-val">Ok</span>(<span class="macro">try!</span>(s.parse().context(s))) |
| } |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, parse_int(<span class="string">"12.5"</span>).unwrap_err()), |
| <span class="string">r#"Int error "12.5": invalid digit found in string"#</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>debug_context() { |
| <span class="kw">fn </span>parse_int(s: <span class="kw-2">&</span>str) -> i32 { |
| s.parse().context(s).unwrap() |
| } |
| <span class="macro">assert_eq!</span>(parse_int(<span class="string">"12"</span>), <span class="number">12</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, <span class="string">"x"</span>.parse::<i32>().context(<span class="string">"x"</span>)), |
| <span class="string">r#"Err(Context("x", ParseIntError { kind: InvalidDigit }))"#</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>path_context() { |
| <span class="kw">fn </span>parse_utf<P: AsRef<Path>>(s: <span class="kw-2">&</span>[u8], p: P) |
| -> <span class="prelude-ty">Result</span><(), ContextErr> |
| { |
| <span class="macro">try!</span>(::std::str::from_utf8(s).context(p)); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| <span class="kw">let </span>etext = parse_utf(<span class="string">b"a\x80\x80"</span>, <span class="string">"/etc"</span>).unwrap_err().to_string(); |
| <span class="macro">assert!</span>(etext.starts_with( |
| <span class="string">"Path error at \"/etc\": invalid utf-8"</span>)); |
| <span class="kw">let </span>etext = parse_utf(<span class="string">b"\x80\x80"</span>, PathBuf::from(<span class="string">"/tmp"</span>)).unwrap_err() |
| .to_string(); |
| <span class="macro">assert!</span>(etext.starts_with( |
| <span class="string">"Path error at \"/tmp\": invalid utf-8"</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>conditional_compilation() { |
| <span class="macro">quick_error! </span>{ |
| <span class="attribute">#[allow(dead_code)] |
| #[derive(Debug)] |
| </span><span class="kw">pub enum </span>Test { |
| <span class="attribute">#[cfg(feature = <span class="string">"foo"</span>)] |
| </span>Variant |
| } |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="quick_error" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |