-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
62 changed files
with
1,311 additions
and
614 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,62 +1,54 @@ | ||
| // macro_rules! $name { | ||
| // ($arg: ty) => {$expansion}; | ||
| // ... | ||
| // } | ||
| // $arg: ty | ||
| // ident: an identifier | ||
| // ty: a type | ||
| // expr: an expression | ||
| // item: 语言项, like a function, struct, module, etc. | ||
| // block: 代码块, surrounded by braces | ||
| // stmt: 语句, surrounded by semicolons | ||
| // pat: a pattern | ||
| // path: a path (e.g. foo, ::std::mem::replace, transmute::<_, int>, …) | ||
| // meta: 元信息 the things that go inside #[...] and #![...] attributes | ||
| // tt: a single token tree | ||
| // vis: 可见性, pub | ||
| // lifetime: 生命周期 | ||
| // Repetitions | ||
| // $ ( ... ) sep rep | ||
| // sep is an optional separator token. Common examples are , and ; | ||
| // rep is the required repeat control. * (indicating zero or more repeats) or + (indicating one or more repeats) | ||
| // 允许最后多一个逗号: | ||
| // ($($exprs:expr),* $(,)*) => {...}; | ||
| // Debug | ||
| // #[feature(trace_macros)] | ||
| // trace_macros!(true); | ||
| // cargo expand | ||
| // 重复 | ||
| macro_rules! vec_strs { | ||
| ( | ||
| // Start a repetition: | ||
| $( | ||
| // Each repeat must contain an expression... | ||
| $element:expr | ||
| ) | ||
| // ...separated by commas... | ||
| , | ||
| // ...zero or more times. | ||
| * | ||
| ) => { | ||
| // Enclose the expansion in a block so that we can use | ||
| // multiple statements. | ||
| { | ||
| let mut v = Vec::new(); | ||
|
|
||
| // Start a repetition: | ||
| $( | ||
| // Each repeat will contain the following statement, with | ||
| // $element replaced with the corresponding expression. | ||
| v.push(format!("{}", $element)); | ||
| )* | ||
|
|
||
| v | ||
| } | ||
| }; | ||
| } | ||
| // 递归回调宏 | ||
| macro_rules! invoke_with_callback { | ||
| ( $callback:ident($($args:tt)* )) => { | ||
| $callback!($($args)*) | ||
| }; | ||
| } | ||
| // 普通宏: 简单AST替换 | ||
| // macro_rules! $name { | ||
| // ($arg: ty) => {$expansion}; | ||
| // ... | ||
| // } | ||
| // $arg: ty | ||
| // ident: 标识符, 变量名称 | ||
| // ty: 类型 | ||
| // expr: 表达式 | ||
| // item: 语言项, like a function, struct, module, etc. | ||
| // block: 代码块, surrounded by braces | ||
| // stmt: 语句, surrounded by semicolons | ||
| // pat: a pattern | ||
| // path: a path (e.g. foo, ::std::mem::replace, transmute::<_, int>, …) | ||
| // meta: 元信息 the things that go inside #[...] and #![...] attributes | ||
| // tt: a single token tree | ||
| // vis: 可见性, pub | ||
| // lifetime: 生命周期 | ||
| // Repetitions | ||
| // $ ( ... ) sep rep | ||
| // sep is an optional separator token. Common examples are , and ; | ||
| // rep is the required repeat control. * (indicating zero or more repeats) or + (indicating one or more repeats) | ||
| // 允许最后多一个逗号: | ||
| // ($($exprs:expr),* $(,)*) => {...}; | ||
| // Debug | ||
| // #[feature(trace_macros)] | ||
| // trace_macros!(true); | ||
| // cargo expand | ||
| // // 递归回调宏 | ||
| // macro_rules! invoke_with_callback { | ||
| // ( $callback:ident($($args:tt)* )) => { | ||
| // $callback!($($args)*) | ||
| // }; | ||
| // } | ||
| // 过程宏: AST ==> AST | ||
| // proc-macro库 | ||
| // ```toml | ||
| // [lib] | ||
| // proc-macro = true | ||
| // ``` | ||
| // 辅助框架: quote、syn | ||
| // 分类: | ||
| // 函数式 | ||
| // 使用公有函数 pub fn 声明, 函数名即宏名 | ||
| // #[proc_macro] | ||
| // 函数签名为 (TokenStream) -> TokenStream | ||
| // derive 式 | ||
| // 使用公有函数 pub fn 声明 | ||
| // #[proc_macro_derive(Name)] #[proc_macro_derive(Name, attributes(attr))] | ||
| // 函数签名为 (TokenStream) -> TokenStream | ||
| // 属性式 | ||
| // 使用公有函数 pub fn 声明，函数名为属性名 | ||
| // #[proc_macro_attribute] | ||
| // 函数签名为 (TokenStream, TokenStream) -> TokenStream |
This file was deleted.
Oops, something went wrong.
This file was deleted.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| /** | ||
| * | ||
| */ |
File renamed without changes.
File renamed without changes.
File renamed without changes.
Oops, something went wrong.