Struct FileId 

pub struct FileId(pub u32);

A file identifier used to track which source file a span belongs to.

File IDs are indices into a file table maintained by the compiler. FileId(0) is reserved as the default/unknown file.

Tuple Fields

0: u32

Implementations

impl FileId

pub const DEFAULT: FileId

The default file ID, used for single-file compilation or when the file is unknown.

pub const PRELUDE: FileId

File ID reserved for the synthetic compiler prelude (ADR-0065). Always parsed first; used so the prelude has a stable FileId distinct from any user file.

pub const BUILTIN: FileId

File ID reserved for synthetic built-in types (ADR-0073). Built-ins like String are not in any user file; the visibility check uses this sentinel as their “home module” so non-pub builtin fields and methods are unreachable from user code without any special-case path.

pub const fn new(id: u32) -> Self

Create a new file ID from an index.

pub const fn index(self) -> u32

Get the raw index value.

Trait Implementations

impl Clone for FileId

fn clone(&self) -> FileId

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FileId

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

Formats the value using the given formatter.

impl Default for FileId

fn default() -> FileId

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for FileId

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for FileId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for FileId

fn eq(&self, other: &FileId) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for FileId

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for FileId

impl Eq for FileId

impl StructuralPartialEq for FileId