Struct Labels 

pub(crate) struct Labels {
    assigned: BTreeMap<String, Uuid>,
    defined_by_op: HashMap<String, usize>,
}

The $labels of one call and the ids they name.

Fields

assigned: BTreeMap<String, Uuid>

defined_by_op: HashMap<String, usize>

Labels some later op defines, for “used before defined” errors.

Implementations

impl Labels

pub(crate) fn prescan(ops: &[Op]) -> Self

Scans every op for the labels it defines so out-of-order use gets a precise error.

pub(crate) fn define(&mut self, label: &str, id: Uuid) -> Result<(), EditError>

Binds label to the new item id. Errors if the label is malformed or already bound.

fn resolve(&self, label: &str, current_op: usize) -> Result<Uuid, EditError>

pub(crate) fn resolve_segment( &self, segment: &str, whole: &str, current_op: usize, ) -> Result<Uuid, EditError>

The id a path segment names: a $label or a UUID. whole is the path, for errors.

pub(crate) fn resolve_item_ref( &self, raw: &str, current_op: usize, ) -> Result<Uuid, EditError>

The id an item reference such as through names: a $label or an id path.

pub(crate) fn resolve_optional_item_ref( &self, raw: Option<&str>, current_op: usize, ) -> Result<Option<Uuid>, EditError>

Self::resolve_item_ref for an optional field.

pub(crate) fn into_map(self) -> BTreeMap<String, Uuid>

The labels bound by the call.

Trait Implementations

impl Debug for Labels

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

Formats the value using the given formatter.

impl Default for Labels

fn default() -> Labels

Returns the “default value” for a type.