rasn::xer::de

Struct Decoder

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pub struct Decoder { /* private fields */ }
Expand description

Decoder for decoding XER-conforming ASN.1 data

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impl Decoder

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pub fn new(input: &[u8]) -> Result<Self, <Decoder as Decoder>::Error>

Creates a new Decoder from the given input

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impl Decoder for Decoder

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type Ok = ()

The associated success type returned on success.
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type AnyDecoder<const R: usize, const E: usize> = Decoder

Helper type for decoding nested instances of Decoder with different fields.
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type Error = DecodeError

The associated error type returned on failure.
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fn codec(&self) -> Codec

Returns codec variant of Codec that current decoder is decoding.
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fn decode_any(&mut self) -> Result<Any, Self::Error>

Decode an unknown ASN.1 value identified by tag from the available input.
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fn decode_bit_string( &mut self, __tag: Tag, __constraints: Constraints, ) -> Result<BitString, Self::Error>

Decode a BIT STRING identified by tag from the available input.
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fn decode_bool(&mut self, __tag: Tag) -> Result<bool, Self::Error>

Decode a BOOL identified by tag from the available input.
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fn decode_enumerated<E: Enumerated>( &mut self, __tag: Tag, ) -> Result<E, Self::Error>

Decode an enumerated enum’s discriminant identified by tag from the available input.
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fn decode_integer<I: IntegerType>( &mut self, _t: Tag, _c: Constraints, ) -> Result<I, Self::Error>

Decode a INTEGER identified by tag from the available input.
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fn decode_null(&mut self, _tag: Tag) -> Result<(), Self::Error>

Decode NULL identified by tag from the available input.
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fn decode_object_identifier( &mut self, _tag: Tag, ) -> Result<ObjectIdentifier, Self::Error>

Decode a OBJECT IDENTIFIER identified by tag from the available input.
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fn decode_sequence<const RC: usize, const EC: usize, D, DF, F>( &mut self, _: Tag, _: Option<DF>, decode_fn: F, ) -> Result<D, Self::Error>
where D: Constructed<RC, EC>, F: FnOnce(&mut Self) -> Result<D, Self::Error>,

Decode a SEQUENCE identified by tag from the available input. Returning a new Decoder containing the sequence’s contents to be decoded. Read more
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fn decode_sequence_of<D: Decode>( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<Vec<D>, Self::Error>

Decode a SEQUENCE OF D where D: Decode identified by tag from the available input.
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fn decode_set_of<D: Decode + Eq + Hash>( &mut self, _t: Tag, _c: Constraints, ) -> Result<SetOf<D>, Self::Error>

Decode a SET OF D where D: Decode identified by tag from the available input.
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fn decode_octet_string<'b, T: From<Vec<u8>> + From<&'b [u8]>>( &'b mut self, _: Tag, _c: Constraints, ) -> Result<T, Self::Error>

Decode a OCTET STRING identified by tag from the available input.
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fn decode_utf8_string( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<Utf8String, Self::Error>

Decode a UTF8 STRING identified by tag from the available input.
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fn decode_visible_string( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<VisibleString, Self::Error>

Decode a VisibleString identified by tag from the available input.
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fn decode_general_string( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<GeneralString, Self::Error>

Decode a GeneralString identified by tag from the available input.
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fn decode_ia5_string( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<Ia5String, Self::Error>

Decode a Ia5String identified by tag from the available input.
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fn decode_graphic_string( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<GraphicString, Self::Error>

Decode a GraphicString identified by tag from the available input.
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fn decode_printable_string( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<PrintableString, Self::Error>

Decode a PrintableString identified by tag from the available input.
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fn decode_numeric_string( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<NumericString, Self::Error>

Decode a NumericString identified by tag from the available input.
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fn decode_teletex_string( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<TeletexString, Self::Error>

Decode a TeletexString identified by tag from the available input.
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fn decode_bmp_string( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<BmpString, Self::Error>

Decode a BmpString identified by tag from the available input.
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fn decode_explicit_prefix<D: Decode>( &mut self, _tag: Tag, ) -> Result<D, Self::Error>

Decode an ASN.1 value that has been explicitly prefixed with tag from the available input.
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fn decode_utc_time(&mut self, _tag: Tag) -> Result<UtcTime, Self::Error>

Decode a UtcTime identified by tag from the available input.
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fn decode_generalized_time( &mut self, _tag: Tag, ) -> Result<GeneralizedTime, Self::Error>

Decode a GeneralizedTime identified by tag from the available input.
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fn decode_set<const RC: usize, const EC: usize, FIELDS, SET, D, F>( &mut self, _t: Tag, decode_fn: D, field_fn: F, ) -> Result<SET, Self::Error>
where SET: Decode + Constructed<RC, EC>, FIELDS: Decode, D: Fn(&mut Self::AnyDecoder<RC, EC>, usize, Tag) -> Result<FIELDS, Self::Error>, F: FnOnce(Vec<FIELDS>) -> Result<SET, Self::Error>,

Decode a SET identified by tag from the available input. Decoding SETs works a little different than other methods, as you need to provide two types SET and FIELDS, SET represents the complete type, and FIELDS must represent a CHOICE with a variant for each field from SET. As with SETs the field order is not guarenteed, so you’ll have map from Vec<FIELDS> to SET in decode_operation. Read more
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fn decode_choice<D>( &mut self, _constraints: Constraints, ) -> Result<D, Self::Error>
where D: DecodeChoice,

Decode an the optional value in a SEQUENCE or SET.
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fn decode_optional<D: Decode>(&mut self) -> Result<Option<D>, Self::Error>

Decode an the optional value in a SEQUENCE or SET.
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fn decode_optional_with_tag<D: Decode>( &mut self, _tag: Tag, ) -> Result<Option<D>, Self::Error>

Decode an the optional value in a SEQUENCE or SET with tag. Passing the correct tag is required even when used with codecs where the tag is not present.
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fn decode_optional_with_constraints<D: Decode>( &mut self, _constraints: Constraints, ) -> Result<Option<D>, Self::Error>

Decode an the optional value in a SEQUENCE or SET with constraints.
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fn decode_optional_with_tag_and_constraints<D: Decode>( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<Option<D>, Self::Error>

Decode an the optional value in a SEQUENCE or SET with tag and constraints.
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fn decode_extension_addition_with_constraints<D>( &mut self, _constraints: Constraints, ) -> Result<Option<D>, Self::Error>
where D: Decode,

Decode an extension addition with constraints in a SEQUENCE or SET
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fn decode_extension_addition_group<const RC: usize, const EC: usize, D: Decode + Constructed<RC, EC>>( &mut self, ) -> Result<Option<D>, Self::Error>

Decode a extension addition group in a SEQUENCE or SET. Read more
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fn decode_real<R: RealType>( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<R, Self::Error>

Decode a REAL identified by tag from the available input.
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fn decode_optional_with_explicit_prefix<D: Decode>( &mut self, _tag: Tag, ) -> Result<Option<D>, Self::Error>

Decode an optional ASN.1 type that has been explicitly prefixed with tag from the available input.
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fn decode_date(&mut self, _tag: Tag) -> Result<Date, Self::Error>

Decode a ‘DATE’ identified by ‘tag’ from the available input
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fn decode_extension_addition_with_explicit_tag_and_constraints<D>( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<Option<D>, Self::Error>
where D: Decode,

Decode an extension addition with explicit tag in a SEQUENCE or SET.
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fn decode_extension_addition_with_tag_and_constraints<D>( &mut self, _tag: Tag, _constraints: Constraints, ) -> Result<Option<D>, Self::Error>
where D: Decode,

Decode a extension addition value with tag and constraints in a SEQUENCE or SET.
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fn decode_default<D: Decode, F: FnOnce() -> D>( &mut self, default_fn: F, ) -> Result<D, Self::Error>

Decode a DEFAULT value in a SEQUENCE or SET.
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fn decode_default_with_tag<D: Decode, F: FnOnce() -> D>( &mut self, tag: Tag, default_fn: F, ) -> Result<D, Self::Error>

Decode a DEFAULT value in a SEQUENCE or SET with tag and default_fn.
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fn decode_default_with_constraints<D: Decode, F: FnOnce() -> D>( &mut self, default_fn: F, constraints: Constraints, ) -> Result<D, Self::Error>

Decode a DEFAULT value with constraints in a SEQUENCE or SET with a given default_fn.
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fn decode_default_with_tag_and_constraints<D: Decode, F: FnOnce() -> D>( &mut self, tag: Tag, default_fn: F, constraints: Constraints, ) -> Result<D, Self::Error>

Decode a DEFAULT value in a SEQUENCE or SET with tag, constraints and default_fn.
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fn decode_extension_addition<D>(&mut self) -> Result<Option<D>, Self::Error>
where D: Decode,

Decode an extension addition value in a SEQUENCE or SET.
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fn decode_extension_addition_with_tag<D>( &mut self, tag: Tag, ) -> Result<Option<D>, Self::Error>
where D: Decode,

Decode an extension addition value with tag in a SEQUENCE or SET.
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fn decode_extension_addition_with_default<D: Decode, F: FnOnce() -> D>( &mut self, default_fn: F, ) -> Result<D, Self::Error>

Decode a DEFAULT value in a SEQUENCE’s or SET’s extension
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fn decode_extension_addition_with_default_and_tag<D: Decode, F: FnOnce() -> D>( &mut self, tag: Tag, default_fn: F, ) -> Result<D, Self::Error>

Decode a DEFAULT value with tag in a SEQUENCE’s or SET’s extension
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fn decode_extension_addition_with_default_and_constraints<D: Decode, F: FnOnce() -> D>( &mut self, default_fn: F, constraints: Constraints, ) -> Result<D, Self::Error>

Decode a DEFAULT value with constraints in a SEQUENCE’s or SET’s extension
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fn decode_extension_addition_with_default_and_tag_and_constraints<D: Decode, F: FnOnce() -> D>( &mut self, tag: Tag, default_fn: F, constraints: Constraints, ) -> Result<D, Self::Error>

Decode a DEFAULT value with tag and constraints in a SEQUENCE’s or SET’s extension
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impl TryFrom<VecDeque<XmlEvent>> for Decoder

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type Error = DecodeError

The type returned in the event of a conversion error.
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fn try_from(value: VecDeque<XmlEvent>) -> Result<Self, Self::Error>

Performs the conversion.

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where Self: LowerHex,

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where Self: Octal,

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