TryMap

vest_lib::regular::modifier

Struct TryMap 

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pub struct TryMap<Inner, M> {
    pub inner: Inner,
    pub mapper: M,
}
Expand description

Combinator that maps the result of an inner combinator with a fallible conversion that implements [TryFromInto].

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§inner: Inner

The inner combinator.

§mapper: M

The fallible conversion.

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impl<'x, I, O, Inner, M> Combinator<'x, I, O> for TryMap<Inner, M>
where I: VestInput, O: VestOutput<I>, Inner: Combinator<'x, I, O>, Inner::V: SecureSpecCombinator<Type = <Inner::Type as View>::V>, M: PartialIso<'x, Src = Inner::Type, RefSrc = Inner::SType>, M::Dst: TryFrom<Inner::Type> + View, Inner::SType: TryFrom<&'x M::Dst> + View, M::V: SpecPartialIsoProof<Src = <Inner::Type as View>::V, Dst = <M::Dst as View>::V>, <Inner::Type as View>::V: SpecTryFrom<<M::Dst as View>::V>, <M::Dst as View>::V: SpecTryFrom<<Inner::Type as View>::V>, <Inner::SType as TryFrom<&'x M::Dst>>::Error: Debug,

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exec fn length(&self, v: Self::SType) -> usize

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open spec fn ex_requires(&self) -> bool

{ self.inner.ex_requires() }
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exec fn parse(&self, s: I) -> res : Result<(usize, Self::Type), ParseError>

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exec fn serialize( &self, v: Self::SType, data: &mut O, pos: usize, ) -> res : Result<usize, SerializeError>

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type Type = <M as PartialIso<'x>>::Dst

The result type of parsing
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type SType = &'x <M as PartialIso<'x>>::Dst

The input type of serialization, often a reference to Self::Type. For “structural” formats though (e.g., crate::regular::sequence::Pair and crate::regular::variant::Choice), this is the tuple/sum of the corresponding Combinator::SType types.
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impl<U, M1, M2> DisjointFrom<TryMap<U, M2>> for TryMap<U, M1>
where U: SpecCombinator, M1: SpecPartialIsoFn<Src = U::Type>, M2: SpecPartialIsoFn<Src = U::Type>, U::Type: SpecTryFrom<M1::Dst> + SpecTryFrom<M2::Dst>, M1::Dst: SpecTryFrom<U::Type>, M2::Dst: SpecTryFrom<U::Type>,

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open spec fn disjoint_from(&self, other: &TryMap<U, M2>) -> bool

{
    self.inner == other.inner
        && forall |t| {
            <M1 as SpecPartialIsoFn>::spec_apply(t) is Ok
                ==> <M2 as SpecPartialIsoFn>::spec_apply(t) is Err
        }
}
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proof fn parse_disjoint_on(&self, other: &TryMap<U, M2>, buf: Seq<u8>)

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impl<Inner, M> SecureSpecCombinator for TryMap<Inner, M>
where Inner: SecureSpecCombinator, M: SpecPartialIsoProof<Src = Inner::Type>, Inner::Type: SpecTryFrom<M::Dst>, M::Dst: SpecTryFrom<Inner::Type>,

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open spec fn is_prefix_secure() -> bool

{ Inner::is_prefix_secure() }
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open spec fn is_productive(&self) -> bool

{ self.inner.is_productive() }
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proof fn theorem_serialize_parse_roundtrip(&self, v: Self::Type)

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proof fn theorem_parse_serialize_roundtrip(&self, buf: Seq<u8>)

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proof fn lemma_prefix_secure(&self, s1: Seq<u8>, s2: Seq<u8>)

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proof fn lemma_parse_length(&self, s: Seq<u8>)

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proof fn lemma_parse_productive(&self, s: Seq<u8>)

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fn corollary_parse_surjective(&self, v: Self::Type)

Read more
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fn corollary_serialize_injective(&self, v1: Self::Type, v2: Self::Type)

Read more
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fn corollary_serialize_injective_contraposition( &self, v1: Self::Type, v2: Self::Type, )

Read more
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fn corollary_parse_non_malleable(&self, buf1: Seq<u8>, buf2: Seq<u8>)

Read more
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fn lemma_serialize_productive(&self, v: Self::Type)

Read more
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impl<Inner, M> SpecCombinator for TryMap<Inner, M>
where Inner: SpecCombinator, M: SpecPartialIso<Src = Inner::Type>, Inner::Type: SpecTryFrom<M::Dst>, M::Dst: SpecTryFrom<Inner::Type>,

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open spec fn requires(&self) -> bool

{ self.inner.requires() }
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open spec fn wf(&self, v: Self::Type) -> bool

{
    match M::spec_rev_apply(v) {
        Ok(v) => self.inner.wf(v),
        Err(_) => false,
    }
}
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open spec fn spec_parse(&self, s: Seq<u8>) -> Option<(int, Self::Type)>

{
    match self.inner.spec_parse(s) {
        Some((n, v)) => {
            match M::spec_apply(v) {
                Ok(v) => Some((n, v)),
                Err(_) => None,
            }
        }
        None => None,
    }
}
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open spec fn spec_serialize(&self, v: Self::Type) -> Seq<u8>

{
    match M::spec_rev_apply(v) {
        Ok(v) => self.inner.spec_serialize(v),
        Err(_) => Seq::empty(),
    }
}
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type Type = <M as SpecPartialIso>::Dst

The view of [Combinator::Result].
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impl<Inner: View, M: View> View for TryMap<Inner, M>

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open spec fn view(&self) -> Self::V

{
    TryMap {
        inner: self.inner@,
        mapper: self.mapper@,
    }
}
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type V = TryMap<<Inner as View>::V, <M as View>::V>

Auto Trait Implementations§

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impl<Inner, M> Freeze for TryMap<Inner, M>
where Inner: Freeze, M: Freeze,

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impl<Inner, M> RefUnwindSafe for TryMap<Inner, M>
where Inner: RefUnwindSafe, M: RefUnwindSafe,

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impl<Inner, M> Send for TryMap<Inner, M>
where Inner: Send, M: Send,

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impl<Inner, M> Sync for TryMap<Inner, M>
where Inner: Sync, M: Sync,

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impl<Inner, M> Unpin for TryMap<Inner, M>
where Inner: Unpin, M: Unpin,

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impl<Inner, M> UnwindSafe for TryMap<Inner, M>
where Inner: UnwindSafe, M: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T
where T: View, <T as View>::V: SpecFrom<<T as View>::V>,

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exec fn ex_from(t: T) -> res : T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, VERUS_SPEC__A> FromSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: From<T>,

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fn obeys_from_spec() -> bool

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fn from_spec(v: T) -> VERUS_SPEC__A

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impl<T, U> Into<U> for T
where T: View, U: View + From<T>, <U as View>::V: SpecFrom<<T as View>::V>,

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exec fn ex_into(self) -> U

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, VERUS_SPEC__A> IntoSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: Into<T>,

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fn obeys_into_spec() -> bool

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fn into_spec(self) -> T

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impl<T, U> IntoSpecImpl<U> for T
where U: From<T>,

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fn obeys_into_spec() -> bool

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fn into_spec(self) -> U

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impl<T> SpecFrom<T> for T

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open spec fn spec_from(t: T) -> T

{ t }
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impl<T, U> SpecInto<U> for T
where U: SpecFrom<T>,

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open spec fn spec_into(self) -> U

{ U::spec_from(self) }
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impl<T, U> SpecTryInto<U> for T
where U: SpecTryFrom<T>,

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open spec fn spec_try_into(self) -> Result<U, <U as SpecTryFrom<T>>::Error>

{ U::spec_try_from(self) }
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type Error = <U as SpecTryFrom<T>>::Error

The type returned in the event of a conversion error.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, VERUS_SPEC__A> TryFromSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: TryFrom<T>,

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fn obeys_try_from_spec() -> bool

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fn try_from_spec( v: T, ) -> Result<VERUS_SPEC__A, <VERUS_SPEC__A as TryFrom<T>>::Error>

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impl<T, U> TryInto<U> for T
where T: View, U: View + TryFrom<T>, <U as View>::V: SpecTryFrom<<T as View>::V>,

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exec fn ex_try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T, VERUS_SPEC__A> TryIntoSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: TryInto<T>,

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fn obeys_try_into_spec() -> bool

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fn try_into_spec(self) -> Result<T, <VERUS_SPEC__A as TryInto<T>>::Error>

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impl<T, U> TryIntoSpecImpl<U> for T
where U: TryFrom<T>,

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fn obeys_try_into_spec() -> bool

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fn try_into_spec(self) -> Result<U, <U as TryFrom<T>>::Error>