Struct FileIdMap 

pub struct FileIdMap { /* private fields */ }

Bidirectional mapping between file paths and stable FileIds.

IDs are assigned sequentially on first contact. The mapping is append-only within a session; IDs are never recycled.

Implementations

impl FileIdMap

pub fn new() -> Self

pub fn assign_or_get(&mut self, path: &str) -> FileId

Return the FileId for path, assigning a fresh one if not yet seen.

pub fn get(&self, path: &str) -> Option<FileId>

Look up the FileId for path without assigning a new one.

pub fn path(&self, id: FileId) -> Option<&str>

Resolve a FileId back to its path string.

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn iter(&self) -> impl Iterator<Item = (FileId, &str)>

Iterate all (FileId, path) pairs in assignment order.

Trait Implementations

impl Debug for FileIdMap

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

Formats the value using the given formatter.

impl Default for FileIdMap

fn default() -> FileIdMap

Returns the “default value” for a type.