# file_check_macro

Use this macro to get compile time errors if a template doesn't exist.

The macro in this crate, `generate_template`,  takes a string slice (`&str`). It checks that the file in the string exists on disk in `src`, and generates a `const TEMPLATE:&str = <your string slice;>`. 

Usage:

This:
```rust
generate_template!("path/to/my/template.tera");
```
Is the same as:
```rust 
const TEMPLATE:&str = "path/to/my/template.tera";
```
But with a check that the file exists at:
```
src/path/to/my/template.tera
```
Note the prepended `src`.

The use case is this:
1. You're generating HTML on the server using, say, Tera.
2. You're a sensible person who knows that files that change together should live together. So you want to store your templates alongside their Rust handlers, not in some separate `templates` tree like some kind of blithering idiot.
3. You love that rusts checks everything, and you hate run-time errors.