concat-idents!

This crate provides a single, easy to use macro

Usage

Basic usage

```rust use concatidents::concatidents;

concatidents!(fnname = foo, , bar { fn fnname() { // --snip-- } });

foo_bar(); ```

Generating Tests

```rust macrorules! generatetest { ($method:ident($lhs:ident, $rhs:ident)) => { concatidents!(testname = $method, , $lhs, _, $rhs { #[test] fn testname() { let _ = $lhs::default().$method($rhs::default()); } }); }; }

[derive(Default)]

struct S(i32);

impl Add for S { type Output = S; fn add(self,rhs: i32) -> Self::Output { S(self.0 + rhs) } }

impl Sub for S { type Output = S; fn sub(self,rhs: i32) -> Self::Output { S(self.0 - rhs) } }

generatetest!(add(S, i32)); generatetest!(sub(S, i32)); ```

Error

This macro will throw a compile error, if: 1. an unexpected syntax is passed rust concat_idents!({}); concat_idents!(ident {}); concat_idents!(ident = foo, bar); ... 2. one of the identifiers is invalid rust concat_idents!(ident = true {}); concat_idents!(ident = 1 {}); concat_idents!(ident = foo, 1.0 {}); concat_idents!(ident = {}); ...