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fixup! parse inline attrs

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This commit is contained in:
Noah Hellman 2023-01-15 16:02:36 +01:00
commit 59664feaf3
2 changed files with 55 additions and 82 deletions
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3
src/inline.rs
View file

@ -495,9 +495,6 @@ impl<I: Iterator<Item = char> + Clone> Iterator for Parser<I> {
#[cfg(test)]
mod test {
use crate::Span;
use super::Atom::*;
use super::Container::*;
use super::EventKind::*;
use super::Verbatim;

134
src/lib.rs
View file

@ -262,7 +262,7 @@ struct InlineChars<'s, I> {
}
// Implement inlines.flat_map(|sp| sp.of(self.src).chars())
impl<'s, 't, I: Iterator<Item = Span>> InlineChars<'s, I> {
impl<'s, I: Iterator<Item = Span>> InlineChars<'s, I> {
fn new(src: &'s str, inlines: I) -> Self {
Self {
src,
@ -272,7 +272,7 @@ impl<'s, 't, I: Iterator<Item = Span>> InlineChars<'s, I> {
}
}
impl<'s, 't, I: Iterator<Item = Span>> Iterator for InlineChars<'s, I> {
impl<'s, I: Iterator<Item = Span>> Iterator for InlineChars<'s, I> {
type Item = char;
fn next(&mut self) -> Option<Self::Item> {
@ -306,28 +306,7 @@ impl<'s> DiscontinuousString<'s> for InlineSpans<'s> {
type Chars = InlineCharsIter<'s>;
fn src(&self, span: Span) -> CowStr<'s> {
let mut a = 0;
let mut s = String::new();
for sp in &self.spans {
let b = a + sp.len();
if span.start() < b {
let r = if a <= span.start() {
if span.end() <= b {
// continuous
return CowStr::Borrowed(
&sp.of(self.src)[span.start() - a..span.end() - a],
);
}
(span.start() - a)..sp.len()
} else {
0..sp.len().min(span.end() - a)
};
s.push_str(&sp.of(self.src)[r]);
}
a = b;
}
assert_eq!(span.len(), s.len());
CowStr::Owned(s)
Self::borrow_or_copy(self.src, self.spans.iter().copied(), span)
}
fn chars(&self) -> Self::Chars {
@ -337,66 +316,15 @@ impl<'s> DiscontinuousString<'s> for InlineSpans<'s> {
}
impl<'s, 'i> DiscontinuousString<'s> for InlineSpansSlice<'s, 'i> {
type Chars = InlineChars<
's,
std::iter::Chain<
std::iter::Chain<std::iter::Once<Span>, std::iter::Copied<std::slice::Iter<'i, Span>>>,
std::iter::Once<Span>,
>,
>;
type Chars = InlineChars<'s, InlineSpansSliceIter<'i>>;
/// Borrow if continuous, copy if discontiunous.
fn src(&self, span: Span) -> CowStr<'s> {
let mut a = 0;
let mut s = String::new();
for (i, mut sp) in self.spans.iter().copied().enumerate() {
if i == 0 {
sp = sp.skip(self.first_skip);
}
if i == self.spans.len() - 1 {
sp = Span::by_len(sp.start(), self.last_len);
}
let b = a + sp.len();
if span.start() < b {
let r = if a <= span.start() {
if span.end() <= b {
// continuous
return CowStr::Borrowed(
&sp.of(self.src)[span.start() - a..span.end() - a],
);
}
(span.start() - a)..sp.len()
} else {
0..sp.len().min(span.end() - a)
};
s.push_str(&sp.of(self.src)[r]);
}
a = b;
}
assert_eq!(span.len(), s.len());
CowStr::Owned(s)
InlineSpans::borrow_or_copy(self.src, self.spans(), span)
}
fn chars(&self) -> Self::Chars {
let (span_start, r_middle, span_end) = if self.spans.len() == 1 {
(
Span::by_len(self.spans[0].start() + self.first_skip, self.last_len),
0..0,
Span::by_len(self.spans[self.spans.len() - 1].start(), 0),
)
} else {
(
Span::new(self.spans[0].start() + self.first_skip, self.spans[0].end()),
1..self.spans.len().saturating_sub(2),
Span::by_len(self.spans[self.spans.len() - 1].start(), self.last_len),
)
};
InlineChars::new(
self.src,
std::iter::once(span_start)
.chain(self.spans[r_middle].iter().copied())
.chain(std::iter::once(span_end)),
)
InlineChars::new(self.src, self.spans())
}
}
@ -456,6 +384,30 @@ impl<'s> InlineSpans<'s> {
spans: &self.spans[first..=last],
}
}
/// Borrow if continuous, copy if discontiunous.
fn borrow_or_copy<I: Iterator<Item = Span>>(src: &str, spans: I, span: Span) -> CowStr {
let mut a = 0;
let mut s = String::new();
for sp in spans {
let b = a + sp.len();
if span.start() < b {
let r = if a <= span.start() {
if span.end() <= b {
// continuous
return CowStr::Borrowed(&sp.of(src)[span.start() - a..span.end() - a]);
}
(span.start() - a)..sp.len()
} else {
0..sp.len().min(span.end() - a)
};
s.push_str(&sp.of(src)[r]);
}
a = b;
}
assert_eq!(span.len(), s.len());
CowStr::Owned(s)
}
}
struct InlineSpansSlice<'s, 'i> {
@ -465,6 +417,31 @@ struct InlineSpansSlice<'s, 'i> {
spans: &'i [Span],
}
type InlineSpansSliceIter<'i> = std::iter::Chain<
std::iter::Chain<std::iter::Once<Span>, std::iter::Copied<std::slice::Iter<'i, Span>>>,
std::iter::Once<Span>,
>;
impl<'s, 'i> InlineSpansSlice<'s, 'i> {
fn spans(&self) -> InlineSpansSliceIter<'i> {
let (span_start, r_middle, span_end) = if self.spans.len() == 1 {
(
Span::by_len(self.spans[0].start() + self.first_skip, self.last_len),
0..0,
Span::by_len(self.spans[self.spans.len() - 1].start(), 0),
)
} else {
(
Span::new(self.spans[0].start() + self.first_skip, self.spans[0].end()),
1..self.spans.len().saturating_sub(2),
Span::by_len(self.spans[self.spans.len() - 1].start(), self.last_len),
)
};
std::iter::once(span_start)
.chain(self.spans[r_middle].iter().copied())
.chain(std::iter::once(span_end))
}
}
type InlineCharsIter<'s> = InlineChars<'s, std::iter::Copied<std::slice::Iter<'static, Span>>>;
pub struct Parser<'s> {
@ -636,7 +613,6 @@ mod test {
use super::Atom::*;
use super::Attributes;
use super::Container::*;
use super::CowStr;
use super::Event::*;
use super::LinkType;
use super::SpanLinkType;