Struct chalk_solve::display::state::InternalWriterState

pub(super) struct InternalWriterState<'a, I: Interner> {
    persistent_state: WriterState<I, dyn RustIrDatabase<I> + 'a, &'a dyn RustIrDatabase<I>>,
    indent_level: usize,
    debrujin_indices_deep: u32,
    remapping: Rc<BTreeMap<InvertedBoundVar, InvertedBoundVar>>,
    self_mapping: Option<InvertedBoundVar>,
}

Writer state for a single write call, persistent only as long as necessary to write a single item.

Stores things necessary for .

Fields

persistent_state: WriterState<I, dyn RustIrDatabase<I> + 'a, &'a dyn RustIrDatabase<I>>

indent_level: usize

debrujin_indices_deep: u32

remapping: Rc<BTreeMap<InvertedBoundVar, InvertedBoundVar>>

self_mapping: Option<InvertedBoundVar>

Implementations

impl<'a, I: Interner> InternalWriterState<'a, I>

pub fn new<DB, P>(persistent_state: &'a WriterState<I, DB, P>) -> Self

where DB: RustIrDatabase<I>, P: Borrow<DB>,

pub(super) fn db(&self) -> &dyn RustIrDatabase<I>

pub(super) fn add_indent(&self) -> Self

pub(super) fn indent(&self) -> impl Display

pub(super) fn alias_for_adt_id_name( &self, id: I::InternedAdtId, name: String ) -> impl Display

pub(super) fn alias_for_id_name( &self, id: I::DefId, name: String ) -> impl Display

pub(super) fn add_debrujin_index(&self, self_binding: Option<usize>) -> Self

Adds a level of debrujin index, and possibly a “Self” parameter.

This should be called whenever recursing into the value within a Binders.

If self_binding is Some, then it will introduce a new variable named Self with the within-debrujin index given within and the innermost debrujian index after increasing debrujin index.

pub(super) fn add_parameter_mapping( &self, lowered_vars: impl Iterator<Item = InvertedBoundVar>, original_vars: impl Iterator<Item = InvertedBoundVar> ) -> Self

Adds parameter remapping.

Each of the parameters in lowered_vars will be mapped to its corresponding variable in original_vars when printed through the InternalWriterState returned from this method.

lowered_vars and original_vars must have the same length.

pub(super) fn invert_debrujin_idx( &self, debrujin_idx: u32, index: usize ) -> InvertedBoundVar

Inverts the debrujin index so as to create a canonical name we can anywhere for each bound variable.

See InvertedBoundVar.

pub(super) fn apply_mappings(&self, b: InvertedBoundVar) -> impl Display

pub(super) fn indices_for_bound_var(&self, b: &BoundVar) -> InvertedBoundVar

pub(super) fn indices_for_introduced_bound_var( &self, idx: usize ) -> InvertedBoundVar

pub(super) fn display_bound_var(&self, b: &BoundVar) -> impl Display

pub(super) fn name_for_introduced_bound_var(&self, idx: usize) -> impl Display

pub(super) fn binder_var_indices<'b>( &'b self, binders: &'b VariableKinds<I> ) -> impl Iterator<Item = InvertedBoundVar> + 'b

pub(super) fn binder_var_display<'b>( &'b self, binders: &'b VariableKinds<I> ) -> impl Iterator<Item = String> + 'b

Trait Implementations

impl<'a, I: Clone + Interner> Clone for InternalWriterState<'a, I>

fn clone(&self) -> InternalWriterState<'a, I>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, I: Debug + Interner> Debug for InternalWriterState<'a, I>

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

Formats the value using the given formatter.