Macro register_lints 

macro_rules! register_lints {
    (@register $registry:ident, $config:ident, $pass:ident, early $(, $ctor:expr)?) => { ... };
    (@register $registry:ident, $config:ident, $pass:ident, late $(, $ctor:expr)?) => { ... };
    (@register $registry:ident, $config:ident, $pass:ident, project $(, $ctor:expr)?) => { ... };
    (@call $registry:ident, $config:ident, $pass:ident, $method:ident, $ctor:expr) => { ... };
    (@call $registry:ident, $config:ident, $pass:ident, $method:ident) => { ... };
    ( $( $module:ident: $( ($pass:ident, $kind:ident, ($($lint:ident),* $(,)?) $(, $ctor:expr)?) ),+ $(,)? ; )* ) => { ... };
}

Declares the lint modules of a severity group and registers their passes.

Each entry is module: (PassStruct, early|late|project, (LINT, ...) [, constructor]), ...;. The macro glob-imports each module (which the caller declares with mod, so that rustfmt still discovers the files), generates the PassStruct marker types, the REGISTERED_LINTS slice and a register_lints function that adds every pass to Solar’s registry. A constructor, when given, receives the lint-specific configuration.