Attribute Macro proc_utils::suppress_item

#[suppress_item]

Completely suppresses the attached item from being emitted into the surrounding source file. If you put this attribute last, the previous attributes will still see the item.

This is extremely useful for debugging in general, as it allows you to suppress mundane errors resulting from the generated code of an item so you can focus on compile errors that originated from proc macros related to that item.

Example

The following will compile only if #[suppress_item] is attached:

#[suppress_item]
fn invalid_rust() {
    return value_that_doesnt_exist;
}

This compiles because the item expands to nothing, so rustc doesn’t have a chance to detect any problems with this syntax.