Struct Terminated 

pub struct Terminated<A, B, BVal, const CHECK: bool = false> {
    pub a: A,
    pub b: B,
    pub b_val: BVal,
}

Parsing semantics: like (A, B), but discards the value parsed by B and returns only the value parsed by A.

Serialization semantics: serializes A and then reuses b_val as the serialized witness for B.

When CHECK is false, parsing is malleable in the discarded suffix unless B admits a unique consistent value. When CHECK is true, parsing additionally checks that the parsed suffix equals b_val.

Fields

a: A

b: B

b_val: BVal

Trait Implementations

impl<A, B, BVal, T, const CHECK: bool> ByteLen<T> for Terminated<A, B, BVal, CHECK>

where T: DeepView, BVal: DeepView<V = BVal>, A: ByteLen<T>, B: ByteLen<BVal>,

open spec fn exec_inv(&self) -> bool

{
    &&& self.a.exec_inv()
    &&& self.b.exec_inv()
    &&& forall |v: BVal| v.deep_view() == v

}

exec fn length(&self, v: &T) -> len : usize

impl<A: Clone, B: Clone, BVal: Clone, const CHECK: bool> Clone for Terminated<A, B, BVal, CHECK>

exec fn clone(&self) -> cloned : Self

ensures

call_ensures(A::clone, (&self.a,), cloned.a),

call_ensures(B::clone, (&self.b,), cloned.b),

call_ensures(BVal::clone, (&self.b_val,), cloned.b_val),

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

Performs copy-assignment from source.

impl<A, B, const CHECK: bool> Consistency for Terminated<A, B, B::Val, CHECK>

where A: Consistency, B: Consistency,

open spec fn consistent(&self, v: Self::Val) -> bool

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.consistent(v)
}

type Val = <A as Consistency>::Val

The type of values whose consistency is being checked.

impl<A, B, const CHECK: bool> EquivSerializers for Terminated<A, B, B::SValue, CHECK>

where A: EquivSerializersGeneral, B: EquivSerializers + Consistency<Val = B::SVal>,

open spec fn equiv_inv(&self) -> bool

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.equiv_inv()
}

proof fn lemma_serialize_equiv_on_empty(&self, v: Self::SVal)

impl<A, B, const CHECK: bool> EquivSerializersGeneral for Terminated<A, B, B::SValue, CHECK>

where A: EquivSerializersGeneral, B: EquivSerializersGeneral + Consistency<Val = B::SVal>,

open spec fn equiv_general_inv(&self) -> bool

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.equiv_general_inv()
}

proof fn lemma_serialize_equiv(&self, v: Self::SVal, obuf: Seq<u8>)

impl<A, B, const CHECK: bool> GoodSerializer for Terminated<A, B, B::SVal, CHECK>

where A: GoodSerializer, B: GoodSerializer,

open spec fn serialize_inv(&self) -> bool

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.serialize_inv()
}

proof fn lemma_serialize_len(&self, v: Self::SVal)

impl<A, B, const CHECK: bool> MinMaxByteLen for Terminated<A, B, B::T, CHECK>

where A: MinMaxByteLen, B: MinMaxByteLen,

open spec fn min(&self) -> nat

{ terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val).min() }

open spec fn max(&self) -> nat

{ terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val).max() }

proof fn lemma_min_max_byte_len(&self, v: Self::T)

impl<A, B, const CHECK: bool> NoLookAhead for Terminated<A, B, B::PVal, CHECK>

where A: NoLookAhead, B: NoLookAhead,

open spec fn no_lookahead_inv(&self) -> bool

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.no_lookahead_inv()
}

proof fn lemma_no_lookahead(&self, i1: Seq<u8>, i2: Seq<u8>)

fn corollary_non_extensible(&self, i1: Seq<u8>, i2: Seq<u8>)

impl<A, B> NonMalleable for Terminated<A, B, B::PVal, false>

where A: SoundParser + NonMalleable, B: SoundParser + NonMalleable + AdmitsUniqueVal,

open spec fn nonmal_inv(&self) -> bool

{
    &&& Pair(self.a, self.b).sound_inv()
    &&& Pair(self.a, self.b).nonmal_inv()

}

proof fn lemma_parse_non_malleable(&self, buf1: Seq<u8>, buf2: Seq<u8>)

impl<A, B> NonMalleable for Terminated<A, B, B::PVal, true>

where A: SoundParser + NonMalleable, B: SoundParser + NonMalleable,

open spec fn nonmal_inv(&self) -> bool

{
    &&& Pair(self.a, self.b).sound_inv()
    &&& Pair(self.a, self.b).nonmal_inv()

}

proof fn lemma_parse_non_malleable(&self, buf1: Seq<u8>, buf2: Seq<u8>)

impl<A, B, const CHECK: bool> NonTailFmt for Terminated<A, B, B::SValue, CHECK>

where A: NonTailFmt, B: NonTailFmt,

open spec fn serialize_dps_inv(&self) -> bool

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.serialize_dps_inv()
}

proof fn lemma_serialize_dps_prepend(&self, v: Self::SValue, obuf: Seq<u8>)

proof fn lemma_serialize_dps_len(&self, v: Self::SValue, obuf: Seq<u8>)

impl<I, A, B, BVal> Parser<I> for Terminated<A, B, BVal, false>

where I: InputBuf, A: Parser<I> + SafeParser, B: Parser<I, PT = BVal> + SafeParser<PVal = BVal>, BVal: DeepView<V = BVal>,

open spec fn exec_inv(&self) -> bool

{ Pair(&self.a, &self.b).exec_inv() }

exec fn parse(&self, ibuf: &I) -> PResult<Self::PT>

type PT = <A as Parser<I>>::PT

Executable value returned by this parser.

impl<I, A, B, BVal> Parser<I> for Terminated<A, B, BVal, true>

where I: InputBuf, A: Parser<I> + SafeParser, B: Parser<I, PT = BVal> + SafeParser<PVal = BVal>, BVal: DeepView<V = BVal> + PartialEq + Structural,

open spec fn exec_inv(&self) -> bool

{
    &&& Pair(&self.a, &self.b).exec_inv()
    &&& forall |v: BVal| v.deep_view() == v

}

exec fn parse(&self, ibuf: &I) -> PResult<Self::PT>

type PT = <A as Parser<I>>::PT

Executable value returned by this parser.

impl<A, B, BVal, T, const CHECK: bool> Prepare<T> for Terminated<A, B, BVal, CHECK>

where T: DeepView, BVal: DeepView<V = BVal>, A: Prepare<T>, B: Prepare<BVal>,

open spec fn exec_inv(&self) -> bool

{
    &&& self.a.exec_inv()
    &&& self.b.exec_inv()
    &&& forall |v: BVal| v.deep_view() == v

}

exec fn prepare(&self, v: &T) -> checked : Result<usize, PreSerializeError>

impl<A, B> Productive for Terminated<A, B, B::PVal, false>

where A: Productive, B: Productive,

open spec fn productive_inv(&self) -> bool

{ terminated::<_, _, _, _, false>(self.a, self.b, self.b_val).productive_inv() }

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

impl<A, B> Productive for Terminated<A, B, B::PVal, true>

where A: Productive, B: Productive,

open spec fn productive_inv(&self) -> bool

{ terminated::<_, _, _, _, true>(self.a, self.b, self.b_val).productive_inv() }

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

impl<A, B, const CHECK: bool> SPRoundTripDps for Terminated<A, B, B::SValue, CHECK>

where A: SPRoundTripDps + NonTailFmt, B: SPRoundTripDps,

open spec fn unambiguous(&self) -> bool

{ Pair(self.a, self.b).unambiguous() }

proof fn theorem_serialize_dps_parse_roundtrip(&self, v: Self::T, obuf: Seq<u8>)

impl<A, B, const CHECK: bool> SafeParser for Terminated<A, B, B::PVal, CHECK>

where A: SafeParser, B: SafeParser,

open spec fn safe_inv(&self) -> bool

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.safe_inv()
}

proof fn lemma_parse_safe(&self, ibuf: Seq<u8>)

impl<Output: OutputBuf, A, B, BVal, T, const CHECK: bool> Serializer<Output, T> for Terminated<A, B, BVal, CHECK>

where T: DeepView, BVal: DeepView<V = BVal>, A: Serializer<Output, T>, B: Serializer<Output, BVal>,

open spec fn exec_inv(&self) -> bool

{
    &&& self.a.exec_inv()
    &&& self.b.exec_inv()
    &&& forall |v: BVal| v.deep_view() == v

}

exec fn serialize_into(&self, v: &T, obuf: &mut Output)

impl<A, B> SoundParser for Terminated<A, B, B::PVal, false>

where A: SoundParser, B: SoundParser + AdmitsUniqueVal,

open spec fn sound_inv(&self) -> bool

{
    &&& Pair(self.a, self.b).sound_inv()
    &&& self.b.consistent(self.b_val)

}

proof fn lemma_parse_sound_consumption(&self, ibuf: Seq<u8>)

proof fn lemma_parse_sound_value(&self, ibuf: Seq<u8>)

impl<A, B> SoundParser for Terminated<A, B, B::PVal, true>

where A: SoundParser, B: SoundParser,

open spec fn sound_inv(&self) -> bool

{ Pair(self.a, self.b).sound_inv() }

proof fn lemma_parse_sound_consumption(&self, ibuf: Seq<u8>)

proof fn lemma_parse_sound_value(&self, ibuf: Seq<u8>)

impl<A, B, const CHECK: bool> SpecByteLen for Terminated<A, B, B::T, CHECK>

where A: SpecByteLen, B: SpecByteLen,

open spec fn byte_len(&self, v: Self::T) -> nat

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.byte_len(v)
}

type T = <A as SpecByteLen>::T

The type of values whose byte length is being computed.

impl<A, B, const CHECK: bool> SpecParser for Terminated<A, B, B::PVal, CHECK>

where A: SpecParser, B: SpecParser,

open spec fn spec_parse(&self, ibuf: Seq<u8>) -> Option<(int, Self::PVal)>

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.spec_parse(ibuf)
}

type PVal = <A as SpecParser>::PVal

The type of parsed values.

impl<A, B, const CHECK: bool> SpecSerializer for Terminated<A, B, B::SVal, CHECK>

where A: SpecSerializer, B: SpecSerializer,

open spec fn spec_serialize(&self, v: Self::SVal) -> Seq<u8>

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.spec_serialize(v)
}

type SVal = <A as SpecSerializer>::SVal

The type of values to be serialized.

impl<A, B, const CHECK: bool> SpecSerializerDps for Terminated<A, B, B::SValue, CHECK>

where A: SpecSerializerDps, B: SpecSerializerDps,

open spec fn spec_serialize_dps(&self, v: Self::SValue, obuf: Seq<u8>) -> Seq<u8>

{
    let fmt = terminated::<_, _, _, _, CHECK>(self.a, self.b, self.b_val);
    fmt.spec_serialize_dps(v, obuf)
}

type SValue = <A as SpecSerializerDps>::SValue

The type of values to be serialized.

impl<A, B, const CHECK: bool> StaticByteLen for Terminated<A, B, B::T, CHECK>

where A: StaticByteLen, B: StaticByteLen,

open spec fn static_byte_len() -> nat

{ <Pair<A, B> as StaticByteLen>::static_byte_len() }

proof fn lemma_static_len_matches_byte_len(&self, v: Self::T)

impl<A, B, const CHECK: bool> ValueByteLen for Terminated<A, B, B::T, CHECK>

where A: ValueByteLen, B: StaticByteLen,

open spec fn value_byte_len(v: Self::T) -> nat

{ A::value_byte_len(v) + B::static_byte_len() }

proof fn lemma_value_len_matches_byte_len(&self, v: Self::T)

impl<A: Copy, B: Copy, BVal: Copy, const CHECK: bool> Copy for Terminated<A, B, BVal, CHECK>