Struct der::SliceWriter

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pub struct SliceWriter<'a> { /* private fields */ }
Expand description

Writer which encodes DER into a mutable output byte slice.

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impl<'a> SliceWriter<'a>

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pub fn new(bytes: &'a mut [u8]) -> Self

Create a new encoder with the given byte slice as a backing buffer.

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pub fn encode<T: Encode>(&mut self, encodable: &T) -> Result<()>

Encode a value which impls the Encode trait.

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pub fn error<T>(&mut self, kind: ErrorKind) -> Result<T>

Return an error with the given ErrorKind, annotating it with context about where the error occurred.

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pub fn is_failed(&self) -> bool

Did the decoding operation fail due to an error?

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pub fn finish(self) -> Result<&'a [u8]>

Finish encoding to the buffer, returning a slice containing the data written to the buffer.

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pub fn context_specific<T>( &mut self, tag_number: TagNumber, tag_mode: TagMode, value: &T ) -> Result<()>
where T: EncodeValue + Tagged,

Encode a CONTEXT-SPECIFIC field with the provided tag number and mode.

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pub fn sequence<F>(&mut self, length: Length, f: F) -> Result<()>
where F: FnOnce(&mut SliceWriter<'_>) -> Result<()>,

Encode an ASN.1 SEQUENCE of the given length.

Spawns a nested slice writer which is expected to be exactly the specified length upon completion.

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impl<'a> Debug for SliceWriter<'a>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'a> Writer for SliceWriter<'a>

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fn write(&mut self, slice: &[u8]) -> Result<()>

Write the given DER-encoded bytes as output.
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fn write_byte(&mut self, byte: u8) -> Result<()>

Write a single byte.

Auto Trait Implementations§

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impl<'a> RefUnwindSafe for SliceWriter<'a>

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impl<'a> Send for SliceWriter<'a>

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impl<'a> Sync for SliceWriter<'a>

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impl<'a> Unpin for SliceWriter<'a>

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impl<'a> !UnwindSafe for SliceWriter<'a>

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

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fn from(t: T) -> T

Returns the argument unchanged.

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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, 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, 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.