Struct gluon_check::unify_type::State

pub struct State<'a> {
    pub in_alias: bool,
    // some fields omitted
}

Fields

in_alias: bool

Methods

impl<'a> State<'a>

pub fn new(
    env: &'a (dyn TypeEnv<Type = RcType> + 'a),
    subs: &'a Substitution<RcType>
) -> State<'a>

Trait Implementations

impl<'a, 'e> Unifier<State<'a>, ArcType<Symbol>> for UnifierState<'a, Subsume<'e>>

fn report_error(&mut self, error: UnifyError<TypeError<Symbol, RcType>, RcType>)

Reports an error to the unifier for cases when returning the error is not possible.

fn allow_returned_type_replacement(&self) -> bool

true if the returned type can be replaced by the caller

fn try_match_res(
    &mut self,
    l: &RcType,
    r: &RcType
) -> Result<Option<RcType>, UnifyError<TypeError<Symbol, RcType>, RcType>>

fn error_type(&self) -> RcType

fn try_match(&mut self, l: &Type, r: &Type) -> Option<Type>

Attempt to unify l and r using the strategy of Self.

impl<'a, 'e> Unifier<State<'a>, ArcType<Symbol>> for UnifierState<'a, Equal<'e>>

fn report_error(&mut self, error: UnifyError<TypeError<Symbol, RcType>, RcType>)

Reports an error to the unifier for cases when returning the error is not possible.

fn try_match_res(
    &mut self,
    l: &RcType,
    r: &RcType
) -> Result<Option<RcType>, UnifyError<TypeError<Symbol, RcType>, RcType>>

fn error_type(&self) -> RcType

fn try_match(&mut self, l: &Type, r: &Type) -> Option<Type>

Attempt to unify l and r using the strategy of Self.

fn allow_returned_type_replacement(&self) -> bool

true if the returned type can be replaced by the caller

impl<'a, 'e> Unifier<State<'a>, ArcType<Symbol>> for UnifierState<'a, Smaller>

fn report_error(&mut self, error: UnifyError<TypeError<Symbol, RcType>, RcType>)

Reports an error to the unifier for cases when returning the error is not possible.

fn try_match_res(
    &mut self,
    l: &RcType,
    r: &RcType
) -> Result<Option<RcType>, UnifyError<TypeError<Symbol, RcType>, RcType>>

fn error_type(&self) -> RcType

fn try_match(&mut self, l: &Type, r: &Type) -> Option<Type>

Attempt to unify l and r using the strategy of Self.

fn allow_returned_type_replacement(&self) -> bool

true if the returned type can be replaced by the caller

impl<'a> Unifiable<State<'a>> for RcType

type Error = TypeError<Symbol, RcType>

fn zip_match<U>(
    &self,
    other: &Self,
    unifier: &mut UnifierState<'a, U>
) -> Result<Option<Self>, Error<Symbol, RcType>> where
    UnifierState<'a, U>: Unifier<State<'a>, Self>, 

Perform one level of equality testing between self and other and recursively call back into the unifier for unification on any sub-terms.

fn error_type(state: &State<'a>) -> Self

impl<'a> Clone for State<'a>

fn clone(&self) -> State<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.