https://github.com/jaemk/wrap

Rust wrapping macro
https://github.com/jaemk/wrap

function-wrapper rust rustlang wrap wrapper

Last synced: about 1 month ago
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Rust wrapping macro

• Host: GitHub
• URL: https://github.com/jaemk/wrap
• Owner: jaemk
• License: mit
• Created: 2017-04-06T02:04:08.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2017-04-09T19:29:06.000Z (about 8 years ago)
• Last Synced: 2025-03-28T02:48:36.908Z (about 2 months ago)
• Topics: function-wrapper, rust, rustlang, wrap, wrapper
• Language: Rust
• Size: 8.79 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# wrap [![Build Status](https://travis-ci.org/jaemk/wrap.svg?branch=master)](https://travis-ci.org/jaemk/wrap) [![crates.io](https://img.shields.io/crates/v/wrap.svg)](https://crates.io/crates/wrap) [![docs](https://docs.rs/wrap/badge.svg)](https://docs.rs/wrap)

> generalized rust wrapping macro

Macros for defining generalized `wrappers` and applying them to arbitrary functions. See `examples` for more advanced `wrappers`.

## Simple Usage

```rust,ignore

#[macro_use] extern crate wrap;

def_wrapper!{log1 =

    before = (fn_args) >> {

        println!("* [log-1] >> before everything! fn_args: {:?}", fn_args);

    };

    after  = (wrapped_result) >> {

        println!("* [log-1] >> after everything! wrapped_result: {:?}", wrapped_result);

    };

}

def_wrapper!{log2 =

    before = (fn_args) >> {

        println!("* [log-2] >> before everything! fn_args: {:?}", fn_args);

    };

    after  = (wrapped_result) >> {

        println!("* [log-2] >> after everything! wrapped_result: {:?}", wrapped_result);

    };

}

wrap_with!{log1 >>

fn greet_logged_inner(name: &str) -> String = {

    format!("How are you, {}?", name)

}}

wrap_with!{log2 >>

fn greet_logged(name: &str) -> String = {

    format!("Hello! {}", greet_logged_inner(name))

}}

pub fn main() {

    println!("{}", greet_logged("james"));

}

```