source-stream-0.rs/wrapper/src/lib.rs

#![allow(non_camel_case_types)]
#![allow(non_snake_case)]

use source_stream_0::{
    CollectResult, CollectedSubstring, Keyword, KeywordComparatorIterator, Pos, Predicate,
    SourceStream,
};
use std::marker::PhantomData;

pub trait SourceStreamConverter_Char<C> {
    type WC;
    fn wrapChar(c: C) -> Self::WC;
}

pub trait StreamConverter_Pos<'pos, P: Pos<'pos>> {
    type WP: Pos<'pos>;
    fn wrapPos(p: P) -> Self::WP;
}

pub trait StreamConverter_Substring<'source, C, CS: CollectedSubstring<'source, C = C>>:
    SourceStreamConverter_Char<C>
{
    type WCS: CollectedSubstring<'source, C = Self::WC>;
    fn wrapSubstring(wcs: CS) -> Self::WCS;
}

pub trait StreamConverter<'source, 'pos, C, P: Pos<'pos>, CS: CollectedSubstring<'source, C = C>>:
    SourceStreamConverter_Char<C>
    + StreamConverter_Pos<'pos, P>
    + StreamConverter_Substring<'source, C, CS>
{
}

struct PredicateWrapper<
    'predicate,
    'converter,
    C,
    W: SourceStreamConverter_Char<C>,
    I: Predicate<W::WC>,
> {
    _orig: &'predicate mut I,
    _converter: &'converter W,
    __phantom: PhantomData<C>,
}

impl<'predicate, 'converter, C, W: SourceStreamConverter_Char<C>, I: Predicate<W::WC>>
    PredicateWrapper<'predicate, 'converter, C, W, I>
{
    fn wrap(pred: &'predicate mut I, converter: &'converter W) -> Self {
        return PredicateWrapper {
            _orig: pred,
            _converter: converter,
            __phantom: PhantomData::default(),
        };
    }
}

impl<'predicate, 'converter, C, W: SourceStreamConverter_Char<C>, I: Predicate<W::WC>> Predicate<C>
    for PredicateWrapper<'predicate, 'converter, C, W, I>
{
    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: StreamConverter<'source, 'pos, C, P, CS>,
    I: SourceStream<'source, 'pos, C = C, P = P, CS = CS>,
> {
    _src: I,
    _converter: W,
    __phantom: PhantomData<(&'source (), &'pos (), W)>,
}

impl<
    'source,
    'pos,
    C,
    P: Pos<'pos>,
    CS: CollectedSubstring<'source, C = C>,
    W: StreamConverter<'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<W::WC>) -> bool {
        self._src
            .skip(&mut PredicateWrapper::wrap(predicate, &self._converter))
    }

    fn collect(&mut self, predicate: &mut impl Predicate<W::WC>) -> CollectResult<W::WCS> {
        match self
            ._src
            .collect(&mut PredicateWrapper::wrap(predicate, &self._converter))
        {
            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);
    }
}

pub struct KeywordUnwrapper<
    'keyword,
    'converter,
    C,
    W: SourceStreamConverter_Char<C>,
    I: Keyword<W::WC>,
> {
    _orig: &'keyword I,
    _converter: &'converter W,
    __phantom: PhantomData<C>,
}

impl<'keyword, 'converter, C, W: SourceStreamConverter_Char<C>, I: Keyword<W::WC>>
    KeywordUnwrapper<'keyword, 'converter, C, W, I>
{
    fn unwrap(kw: &'keyword I, converter: &'converter W) -> Self {
        return KeywordUnwrapper {
            _orig: kw,
            _converter: converter,
            __phantom: PhantomData::default(),
        };
    }
}

impl<'keyword, 'converter, C, W: SourceStreamConverter_Char<C>, I: Keyword<W::WC>> Keyword<C>
    for KeywordUnwrapper<'keyword, 'converter, C, W, I>
{
    fn startComparation<'self_>(
        &'self_ self,
        expectedLen: usize,
    ) -> Option<impl KeywordComparatorIterator<'self_, C>> {
        return self
            ._orig
            .startComparation(expectedLen)
            .map(|it| KeywordComparatorWrapper {
                _orig: it,
                _converter: self._converter,
                __phantom: PhantomData::default(),
            });
    }
}

struct KeywordComparatorWrapper<
    'keyword,
    'converter,
    C,
    W: SourceStreamConverter_Char<C>,
    I: KeywordComparatorIterator<'keyword, W::WC>,
> {
    _orig: I,
    _converter: &'converter W,
    __phantom: PhantomData<(&'keyword(), C)>,
}

impl<
    'keyword,
    'converter,
    C,
    W: SourceStreamConverter_Char<C>,
    I: KeywordComparatorIterator<'keyword, W::WC>,
> KeywordComparatorIterator<'keyword, C>
    for KeywordComparatorWrapper<'keyword, 'converter, C, W, I>
{
    fn consume(&mut self, c: C) -> bool {
        todo!()
    }
}