Wrapper stream stub

This commit is contained in:
Andrew Golovashevich 2025-11-17 20:13:03 +03:00
parent 41dfb7f432
commit 4cd77ba975
2 changed files with 107 additions and 0 deletions

8
wrapper/Cargo.toml Normal file
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[package]
name = "source-stream-0-wrapper-0"
edition = "2024"
[lib]
[dependencies]
source-stream-0 = { path = ".." }

99
wrapper/src/lib.rs Normal file
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#![allow(non_camel_case_types)]
#![allow(non_snake_case)]
use source_stream_0::{CollectResult, CollectedSubstring, Pos, Predicate, SourceStream};
pub trait StreamConversions_Char<C> {
type WC;
fn wrapChar(c: C) -> Self::WC;
}
pub trait StreamConversions_Pos<'pos, P: Pos<'pos>> {
type WP: Pos<'pos>;
fn wrapPos(p: P) -> Self::WP;
}
pub trait StreamConversions_Substring<'source, C, CS: CollectedSubstring<'source, C = C>>:
StreamConversions_Char<C>
{
type WCS: CollectedSubstring<'source, C = Self::WC>;
fn wrapSubstring(wcs: CS) -> Self::WCS;
}
pub trait StreamConversions<'source, 'pos, C, P: Pos<'pos>, CS: CollectedSubstring<'source, C = C>>:
StreamConversions_Char<C> + StreamConversions_Pos<'pos, P> + StreamConversions_Substring<'source, C, CS>
{
}
struct PredicateWrapper<'predicate, I: Predicate> {
_orig: &'predicate mut I,
}
impl<'predicate, C, W: StreamConversions_Char<C>, I: Predicate<C = W::WC>>
PredicateWrapper<'predicate, I>
{
fn wrap(pred: &'predicate mut I) -> Self {
return PredicateWrapper { _orig: pred };
}
}
impl<'predicate, C, W: StreamConversions_Char<C>, I: Predicate<C = W::WC>> Predicate
for PredicateWrapper<'predicate, I>
{
type C = C;
fn check(&mut self, chr: C) -> bool {
return self._orig.check(W::wrapChar(chr));
}
}
pub struct SourceStreamWrapper<
'source,
'pos,
C,
P: Pos<'pos>,
CS: CollectedSubstring<'source, C = C>,
W: StreamConversions<'source, 'pos, C, P, CS>,
I: SourceStream<'source, 'pos, C = C, P = P, CS = CS>,
> {
_src: I,
}
impl<
'source,
'pos,
C,
P: Pos<'pos>,
CS: CollectedSubstring<'source>,
W: StreamConversions<'source, 'pos, C, P, CS>,
I: SourceStream<'source, 'pos, C = C, P = P, CS = CS>,
> SourceStream<'source, 'pos> for SourceStreamWrapper<'source, 'pos, C, P, CS, W, I>
{
type C = W::WC;
type P = W::WP;
type CS = W::WCS;
fn skip(&mut self, predicate: &mut impl Predicate<C = W::WC>) -> bool {
self._src.skip(&mut PredicateWrapper::wrap(predicate))
}
fn collect(&mut self, predicate: &mut impl Predicate<C = W::WC>) -> CollectResult<W::WCS> {
match self._src.collect(&mut PredicateWrapper::wrap(predicate)) {
CollectResult::EOF => return CollectResult::EOF,
CollectResult::NotMatches => return CollectResult::NotMatches,
CollectResult::Matches(cs) => return CollectResult::Matches(W::wrapSubstring(cs)),
}
}
fn pos(&self) -> W::WP {
return W::wrapPos(self._src.pos());
}
fn currentChar(&self) -> Option<W::WC> {
return self._src.currentChar().map(W::wrapChar);
}
fn nextChar(&mut self) -> Option<W::WC> {
return self._src.nextChar().map(W::wrapChar);
}
}