Enum voile::syntax::core::ast::Val

pub enum Val {
    Type(Level),
    Lam(Closure),
    Dt(PiSig, Plicit, Box<Self>, Closure),
    RowPoly(VarRec, Variants),
    RowKind(Level, VarRec, Vec<String>),
    Cons(String, Box<Self>),
    Rec(Fields),
    Pair(Box<Self>, Box<Self>),
    Neut(Neutral),
}

Non-redex, canonical values.

Variants

Type(Level)

Type universe.

Lam(Closure)

Closure with parameter typed. For untyped closures, it can be represented as Neut directly.

Dt(PiSig, Plicit, Box<Self>, Closure)

Pi-like types (dependent types), with parameter explicitly typed.

RowPoly(VarRec, Variants)

Row-polymorphic type literal.

RowKind(Level, VarRec, Vec<String>)

Row kind literals -- subtype of Type.

Cons(String, Box<Self>)

Constructor invocation.

Rec(Fields)

Record literal, without extension.

Pair(Box<Self>, Box<Self>)

Sigma instance.

Neut(Neutral)

Neutral value means irreducible but not canonical values.

Methods

impl Val

Reduction functions.

pub fn apply(self, arg: Val) -> Self

pub fn first(self) -> Self

pub fn second(self) -> Val

pub fn project(self, field: String) -> Val

pub fn rec_extend(self, ext: Self) -> Self

Extension for records.

pub fn split_extend(self, ext: Self) -> Self

Extension for case-splits.

pub fn row_extend(self, ext: Self) -> Self

Extension for row-polymorphic types.

pub(crate) fn attach_dbi(self, dbi: DBI) -> Self

pub fn generated_to_var(self) -> Self

pub fn unimplemented_to_glob(self) -> Self

pub fn map_axiom(self, f: &mut impl FnMut(Axiom) -> Neutral) -> Self

impl Val

Constructors and traversal functions.

pub fn is_type(&self) -> bool

pub fn is_universe(&self) -> bool

pub fn pair(first: Self, second: Self) -> Self

pub fn cons(name: String, param: Self) -> Self

pub fn case_tree(tree: CaseSplit) -> Self

pub fn lift(levels: LevelType, expr: Neutral) -> Self

pub fn meta(index: MI) -> Self

pub fn var(index: DBI) -> Self

pub fn closure_lam(body: Self) -> Self

pub fn glob(index: GI) -> Self

pub fn split_on(split: CaseSplit, on: Neutral) -> Self

pub fn or_split(split: CaseSplit, or: Neutral) -> Self

pub fn fresh_axiom() -> Self

pub(crate) fn postulate(uid: UID) -> Self

pub fn fresh_implicit() -> Self

pub fn fresh_unimplemented(index: GI) -> Self

pub fn app(function: Neutral, args: Vec<Self>) -> Self

pub fn fst(pair: Neutral) -> Self

pub fn snd(pair: Neutral) -> Self

pub fn proj(record: Neutral, field: String) -> Self

pub fn closure_dependent_type(
    kind: PiSig,
    visib: Plicit,
    param_ty: TVal,
    body: TVal
) -> TVal

pub fn dependent_type(
    kind: PiSig,
    plicit: Plicit,
    param_type: TVal,
    closure: Closure
) -> TVal

pub fn variant_type(variants: Variants) -> TVal

pub fn record_type(fields: Variants) -> TVal

pub fn neutral_row_type(kind: VarRec, variants: Variants, ext: Neutral) -> TVal

pub fn neutral_record(fields: Fields, ext: Neutral) -> Self

pub fn neutral_variant_type(variants: Variants, ext: Neutral) -> TVal

pub fn neutral_record_type(fields: Variants, ext: Neutral) -> TVal

pub fn pi(param_plicit: Plicit, param_type: TVal, body: Closure) -> TVal

pub fn sig(param_type: TVal, body: Closure) -> TVal

pub fn into_neutral(self) -> Result<Neutral, Self>

impl Val

pub fn into_info(self, loc: Loc) -> ValInfo

Trait Implementations

impl TraverseNeutral for Val

fn try_map_neutral<R>(
    self,
    f: &mut impl FnMut(Neutral) -> Result<Val, R>
) -> Result<Self, R>

Map all Neutral values in this expression.

fn try_fold_neutral<E, R>(
    self,
    init: R,
    f: impl Fn(R, Neutral) -> Result<R, E> + Copy
) -> Result<R, E>

Fold all Neutral values in this expression.

fn fold_neutral<R>(self, init: R, f: impl Fn(R, Neutral) -> R + Copy) -> R

Traverse all Neutral values the AST in a stateful manner.

fn map_neutral(self, f: &mut impl FnMut(Neutral) -> Val) -> Self

Traverse through the AST and change all Neutral values.

impl RedEx<Val> for Val

fn reduce_with_dbi(self, arg: Val, dbi: DBI) -> Val

This is primarily a private implementation-related API. Use at your own risk.

fn reduce_with_dbi_borrow(self, arg: &Val, dbi: DBI) -> Val

When the argument is not likely to be used, prefer this over reduce_with_dbi.

impl RedEx<Val> for Neutral

fn reduce_with_dbi(self, arg: Val, dbi: DBI) -> Val

This is primarily a private implementation-related API. Use at your own risk.

fn reduce_with_dbi_borrow(self, arg: &Val, dbi: DBI) -> Val

When the argument is not likely to be used, prefer this over reduce_with_dbi.

impl Eq for Val

fn assert_receiver_is_total_eq(&self)

impl Default for Val

fn default() -> Self

Returns the "default value" for a type.

impl Clone for Val

fn clone(&self) -> Val

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq<Val> for Val

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Debug for Val

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

Formats the value using the given formatter.

impl Display for Val

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

Formats the value using the given formatter.

impl LiftEx for Val

fn lift(self, levels: LevelType) -> Val

Lift the level of self.

fn calc_level(&self) -> LevelCalcState

Internal API, for code sharing only.

fn level(&self) -> Level

Calculate the level of self, like a normal value will have level 0, a type expression will have level 1 (or higher).