Struct rustc_resolve::ModuleData

pub struct ModuleData<'a> {
    parent: Option<&'a ModuleData<'a>>,
    kind: ModuleKind,
    nearest_parent_mod: DefId,
    lazy_resolutions: RefCell<FxIndexMap<BindingKey, &'a RefCell<NameResolution<'a>>>>,
    populate_on_access: Cell<bool>,
    unexpanded_invocations: RefCell<FxHashSet<ExpnId>>,
    no_implicit_prelude: bool,
    glob_importers: RefCell<Vec<&'a Import<'a>>>,
    globs: RefCell<Vec<&'a Import<'a>>>,
    traits: RefCell<Option<Box<[(Ident, &'a NameBinding<'a>)]>>>,
    span: Span,
    expansion: ExpnId,
}

One node in the tree of modules.

Note that a “module” in resolve is broader than a mod that you declare in Rust code. It may be one of these:

• mod
• crate root (aka, top-level anonymous module)
• enum
• trait
• curly-braced block with statements

You can use ModuleData::kind to determine the kind of module this is.

Fields

parent: Option<&'a ModuleData<'a>>

The direct parent module (it may not be a mod, however).

kind: ModuleKind

What kind of module this is, because this may not be a mod.

nearest_parent_mod: DefId

The DefId of the nearest mod item ancestor (which may be this module). This may be the crate root.

lazy_resolutions: RefCell<FxIndexMap<BindingKey, &'a RefCell<NameResolution<'a>>>>

Mapping between names and their (possibly in-progress) resolutions in this module. Resolutions in modules from other crates are not populated until accessed.

populate_on_access: Cell<bool>

True if this is a module from other crate that needs to be populated on access.

unexpanded_invocations: RefCell<FxHashSet<ExpnId>>

Macro invocations that can expand into items in this module.

no_implicit_prelude: bool

Whether #[no_implicit_prelude] is active.

glob_importers: RefCell<Vec<&'a Import<'a>>>

globs: RefCell<Vec<&'a Import<'a>>>

traits: RefCell<Option<Box<[(Ident, &'a NameBinding<'a>)]>>>

Used to memoize the traits in this module for faster searches through all traits in scope.

span: Span

Span of the module itself. Used for error reporting.

expansion: ExpnId

Implementations

impl<'a> ModuleData<'a>

pub(crate) fn new(
    parent: Option<&'a ModuleData<'a>>,
    kind: ModuleKind,
    nearest_parent_mod: DefId,
    expansion: ExpnId,
    span: Span
) -> Self

pub(crate) fn for_each_child<R, F>(&'a self, resolver: &mut R, f: F) where
    R: AsMut<Resolver<'a>>,
    F: FnMut(&mut R, Ident, Namespace, &'a NameBinding<'a>), 

pub(crate) fn ensure_traits<R>(&'a self, resolver: &mut R) where
    R: AsMut<Resolver<'a>>, 

This modifies self in place. The traits will be stored in self.traits.

pub(crate) fn res(&self) -> Option<Res<NodeId>>

pub(crate) fn def_id(&self) -> Option<DefId>

pub(crate) fn is_normal(&self) -> bool

pub(crate) fn is_trait(&self) -> bool

pub(crate) fn nearest_item_scope(&'a self) -> &'a ModuleData<'a>

pub(crate) fn is_ancestor_of(&self, other: &Self) -> bool

Trait Implementations

impl<'a> Debug for ModuleData<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.