use crate::*;
use core::marker::PhantomData;
#[derive(Debug, PartialEq, Eq)]
pub struct TaggedParser<'a, TagKind, T, E = Error> {
pub header: Header<'a>,
pub inner: T,
pub(crate) tag_kind: PhantomData<TagKind>,
pub(crate) _e: PhantomData<E>,
}
impl<'a, TagKind, T, E> TaggedParser<'a, TagKind, T, E> {
pub const fn new(header: Header<'a>, inner: T) -> Self {
TaggedParser {
header,
inner,
tag_kind: PhantomData,
_e: PhantomData,
}
}
pub const fn assert_class(&self, class: Class) -> Result<()> {
self.header.assert_class(class)
}
pub const fn assert_tag(&self, tag: Tag) -> Result<()> {
self.header.assert_tag(tag)
}
#[inline]
pub const fn class(&self) -> Class {
self.header.class
}
#[inline]
pub const fn tag(&self) -> Tag {
self.header.tag
}
}
impl<'a, TagKind, T, E> AsRef<T> for TaggedParser<'a, TagKind, T, E> {
fn as_ref(&self) -> &T {
&self.inner
}
}
impl<'a, TagKind, T, E> TaggedParser<'a, TagKind, T, E>
where
Self: FromBer<'a, E>,
E: From<Error>,
{
pub fn parse_ber(class: Class, tag: Tag, bytes: &'a [u8]) -> ParseResult<'a, Self, E> {
let (rem, t) = TaggedParser::<TagKind, T, E>::from_ber(bytes)?;
t.assert_class(class).map_err(|e| Err::Error(e.into()))?;
t.assert_tag(tag).map_err(|e| Err::Error(e.into()))?;
Ok((rem, t))
}
}
impl<'a, TagKind, T, E> TaggedParser<'a, TagKind, T, E>
where
Self: FromDer<'a, E>,
E: From<Error>,
{
pub fn parse_der(class: Class, tag: Tag, bytes: &'a [u8]) -> ParseResult<'a, Self, E> {
let (rem, t) = TaggedParser::<TagKind, T, E>::from_der(bytes)?;
t.assert_class(class).map_err(|e| Err::Error(e.into()))?;
t.assert_tag(tag).map_err(|e| Err::Error(e.into()))?;
Ok((rem, t))
}
}
impl<'a, TagKind, T, E> DynTagged for TaggedParser<'a, TagKind, T, E> {
fn tag(&self) -> Tag {
self.tag()
}
}