https://github.com/wandercn/gostd_derive

proc_macro_derive library for gostd.
https://github.com/wandercn/gostd_derive

go-to-rust gostd gostd-derive proc-macro-derive rust-macro

Last synced: 3 months ago
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proc_macro_derive library for gostd.

• Host: GitHub
• URL: https://github.com/wandercn/gostd_derive
• Owner: wandercn
• License: mit
• Created: 2021-09-27T14:30:14.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2021-09-28T11:37:12.000Z (over 4 years ago)
• Last Synced: 2026-02-07T17:25:26.009Z (4 months ago)
• Topics: go-to-rust, gostd, gostd-derive, proc-macro-derive, rust-macro
• Language: Rust
• Homepage: https://crates.io/crates/gostd_derive
• Size: 7.81 KB
• Stars: 0
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# [gostd_derive](https://github.com/wandercn/gostd_derive)

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proc_macro_derive library for [gostd](https://github.com/wandercn/gostd).

## Fmt

 用宏模拟实现Go中的Stringer接口。

 在Go中printf函数，自动打印自定义实现的String方法返回内容。

- 使用方法 

`#[derive(Fmt)]`

example:

```

use gostd_derive::Fmt;

#[derive(Fmt)]

struct Foo{

  name:String,

}

// 必须为附加Fmt继承宏的Struct 或者 Emun 实现String方法才能正常运行

impl Foo {

    fn String()->String{

        "test".to_string()

    }

}

```

- 功能逻辑

Fmt功能就是继承Display 并调用String()方法，在println!()实现自定义打印格式。

功能的rust表示如下。

```rust

impl fmt::Display for Foo {

    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {

        write!(f, "{}", self.String())

    }

} 

```

- 如何调试

本库只使用官方的proc_macro没有办法调试。

唯一方法，只有运行 `cargo check` 检查,不报错就没问题。