Tag

vest_lib::regular::tag

Struct Tag 

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pub struct Tag<Inner, T>(pub Refined<Inner, TagPred<T>>);
Expand description

Generic tag combinator that matches the input with a given value and discards it e.g. Tag(U8, 0) matches the byte 0; Tag(Fixed::<3>, &[1, 2, 3]) matches the bytes [1, 2, 3]

Tuple Fields§

§0: Refined<Inner, TagPred<T>>

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impl<Inner, T> Tag<Inner, T>

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pub exec fn new(inner: Inner, tag: T) -> o : Self

ensures
o
    == Tag(Refined {
        inner,
        predicate: TagPred(tag),
    }),

Creates a new Tag combinator.

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pub open spec fn spec_new(inner: Inner, tag: T) -> o : Self

{
    Tag(Refined {
        inner,
        predicate: TagPred(tag),
    })
}

Creates a new Tag combinator.

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impl<'x, const N: usize> Combinator<'x, &'x [u8], Vec<u8>> for Tag<Fixed<N>, [u8; N]>

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

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open spec fn ex_requires(&self) -> bool

{ <_ as Combinator<'x, &'x [u8], Vec<u8>>>::ex_requires(&self.0) }
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exec fn parse(&self, s: &'x [u8]) -> Result<(usize, Self::Type), ParseError>

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exec fn serialize( &self, v: Self::SType, data: &mut Vec<u8>, pos: usize, ) -> Result<usize, SerializeError>

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type Type = ()

The result type of parsing
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type SType = ()

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<'x, I, O> Combinator<'x, I, O> for Tag<U16Be, u16>
where I: VestPublicInput, O: VestPublicOutput<I>,

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

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open spec fn ex_requires(&self) -> bool

{ <_ as Combinator<'x, I, O>>::ex_requires(&self.0) }
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exec fn parse(&self, s: I) -> Result<(usize, Self::Type), ParseError>

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

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type Type = ()

The result type of parsing
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type SType = ()

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<'x, I, O> Combinator<'x, I, O> for Tag<U16Le, u16>
where I: VestPublicInput, O: VestPublicOutput<I>,

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

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open spec fn ex_requires(&self) -> bool

{ <_ as Combinator<'x, I, O>>::ex_requires(&self.0) }
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exec fn parse(&self, s: I) -> Result<(usize, Self::Type), ParseError>

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

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type Type = ()

The result type of parsing
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type SType = ()

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<'x, I, O> Combinator<'x, I, O> for Tag<U32Be, u32>
where I: VestPublicInput, O: VestPublicOutput<I>,

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

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open spec fn ex_requires(&self) -> bool

{ <_ as Combinator<'x, I, O>>::ex_requires(&self.0) }
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exec fn parse(&self, s: I) -> Result<(usize, Self::Type), ParseError>

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

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type Type = ()

The result type of parsing
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type SType = ()

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<'x, I, O> Combinator<'x, I, O> for Tag<U32Le, u32>
where I: VestPublicInput, O: VestPublicOutput<I>,

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

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open spec fn ex_requires(&self) -> bool

{ <_ as Combinator<'x, I, O>>::ex_requires(&self.0) }
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exec fn parse(&self, s: I) -> Result<(usize, Self::Type), ParseError>

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

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type Type = ()

The result type of parsing
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type SType = ()

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<'x, I, O> Combinator<'x, I, O> for Tag<U64Be, u64>
where I: VestPublicInput, O: VestPublicOutput<I>,

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

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open spec fn ex_requires(&self) -> bool

{ <_ as Combinator<'x, I, O>>::ex_requires(&self.0) }
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exec fn parse(&self, s: I) -> Result<(usize, Self::Type), ParseError>

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

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type Type = ()

The result type of parsing
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type SType = ()

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<'x, I, O> Combinator<'x, I, O> for Tag<U64Le, u64>
where I: VestPublicInput, O: VestPublicOutput<I>,

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

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open spec fn ex_requires(&self) -> bool

{ <_ as Combinator<'x, I, O>>::ex_requires(&self.0) }
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exec fn parse(&self, s: I) -> Result<(usize, Self::Type), ParseError>

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

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type Type = ()

The result type of parsing
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type SType = ()

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<'x, I, O> Combinator<'x, I, O> for Tag<U8, u8>
where I: VestPublicInput, O: VestPublicOutput<I>,

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

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open spec fn ex_requires(&self) -> bool

{ <_ as Combinator<'x, I, O>>::ex_requires(&self.0) }
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exec fn parse(&self, s: I) -> Result<(usize, Self::Type), ParseError>

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

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type Type = ()

The result type of parsing
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type SType = ()

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<'x, I, O> Combinator<'x, I, O> for Tag<UnsignedLEB128, UInt>
where I: VestPublicInput, O: VestPublicOutput<I>,

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

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open spec fn ex_requires(&self) -> bool

{ <_ as Combinator<'x, I, O>>::ex_requires(&self.0) }
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exec fn parse(&self, s: I) -> Result<(usize, Self::Type), ParseError>

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

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type Type = ()

The result type of parsing
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type SType = ()

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<Inner, T> DisjointFrom<Tag<Inner, T>> for Tag<Inner, T>
where Inner: SpecCombinator<Type = T>,

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open spec fn disjoint_from(&self, other: &Tag<Inner, T>) -> bool

{ self.0.disjoint_from(&other.0) }
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proof fn parse_disjoint_on(&self, other: &Tag<Inner, T>, buf: Seq<u8>)

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impl<Inner: SecureSpecCombinator<Type = T>, T> SecureSpecCombinator for Tag<Inner, T>

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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.0.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: SpecCombinator<Type = T>, T> SpecCombinator for Tag<Inner, T>

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open spec fn requires(&self) -> bool

{ self.0.requires() }
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open spec fn wf(&self, v: Self::Type) -> bool

{ self.0.wf(self.0.predicate.0) }
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open spec fn spec_parse(&self, s: Seq<u8>) -> Option<(int, Self::Type)>

{ if let Some((n, _)) = self.0.spec_parse(s) { Some((n, ())) } else { None } }
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open spec fn spec_serialize(&self, v: Self::Type) -> Seq<u8>

{ self.0.spec_serialize(self.0.predicate.0) }
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type Type = ()

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

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

{ Tag(self.0@) }
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type V = Tag<<Inner as View>::V, <T as View>::V>

Auto Trait Implementations§

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impl<Inner, T> Freeze for Tag<Inner, T>
where Inner: Freeze, T: Freeze,

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impl<Inner, T> RefUnwindSafe for Tag<Inner, T>
where Inner: RefUnwindSafe, T: RefUnwindSafe,

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impl<Inner, T> Send for Tag<Inner, T>
where Inner: Send, T: Send,

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impl<Inner, T> Sync for Tag<Inner, T>
where Inner: Sync, T: Sync,

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impl<Inner, T> Unpin for Tag<Inner, T>
where Inner: Unpin, T: Unpin,

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impl<Inner, T> UnwindSafe for Tag<Inner, T>
where Inner: UnwindSafe, T: 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>