inline: use ? to flatten methods
This commit is contained in:
Noah Hellman
parent
491c5f2866
commit
f192ea2aa6
1 changed files with 183 additions and 186 deletions
369
src/inline.rs
369
src/inline.rs
|
|
@ -147,7 +147,7 @@ impl<I: Iterator<Item = char> + Clone> Parser<I> {
|
|||
}
|
||||
|
||||
fn parse_verbatim(&mut self, first: &lex::Token) -> Option<()> {
|
||||
match first.kind {
|
||||
let (mut kind, opener_len) = match first.kind {
|
||||
lex::Kind::Seq(lex::Sequence::Dollar) => {
|
||||
let math_opt = (first.len <= 2)
|
||||
.then(|| {
|
||||
|
|
@ -176,93 +176,93 @@ impl<I: Iterator<Item = char> + Clone> Parser<I> {
|
|||
}
|
||||
lex::Kind::Seq(lex::Sequence::Backtick) => Some((Verbatim, first.len)),
|
||||
_ => None,
|
||||
}
|
||||
.map(|(mut kind, opener_len)| {
|
||||
let e_attr = self.events.len();
|
||||
self.push_sp(EventKind::Placeholder, Span::empty_at(self.span.start()));
|
||||
let opener_event = self.events.len();
|
||||
self.push(EventKind::Enter(kind));
|
||||
}?;
|
||||
|
||||
let mut span_inner = self.span.empty_after();
|
||||
let mut span_outer = None;
|
||||
let e_attr = self.events.len();
|
||||
self.push_sp(EventKind::Placeholder, Span::empty_at(self.span.start()));
|
||||
let opener_event = self.events.len();
|
||||
self.push(EventKind::Enter(kind));
|
||||
|
||||
let mut non_whitespace_first = None;
|
||||
let mut non_whitespace_last = None;
|
||||
let mut span_inner = self.span.empty_after();
|
||||
let mut span_outer = None;
|
||||
|
||||
while let Some(t) = self.eat() {
|
||||
if matches!(t.kind, lex::Kind::Seq(lex::Sequence::Backtick)) && t.len == opener_len
|
||||
let mut non_whitespace_first = None;
|
||||
let mut non_whitespace_last = None;
|
||||
|
||||
while let Some(t) = self.eat() {
|
||||
if matches!(t.kind, lex::Kind::Seq(lex::Sequence::Backtick)) && t.len == opener_len {
|
||||
if matches!(kind, Verbatim)
|
||||
&& matches!(
|
||||
self.lexer.peek().map(|t| &t.kind),
|
||||
Some(lex::Kind::Open(Delimiter::BraceEqual))
|
||||
)
|
||||
{
|
||||
if matches!(kind, Verbatim)
|
||||
&& matches!(
|
||||
self.lexer.peek().map(|t| &t.kind),
|
||||
Some(lex::Kind::Open(Delimiter::BraceEqual))
|
||||
)
|
||||
{
|
||||
let mut ahead = self.lexer.chars();
|
||||
let mut end = false;
|
||||
let len = (&mut ahead)
|
||||
.skip(2) // {=
|
||||
.take_while(|c| {
|
||||
if *c == '{' {
|
||||
return false;
|
||||
}
|
||||
if *c == '}' {
|
||||
end = true;
|
||||
};
|
||||
!end && !c.is_whitespace()
|
||||
let mut ahead = self.lexer.chars();
|
||||
let mut end = false;
|
||||
let len = (&mut ahead)
|
||||
.skip(2) // {=
|
||||
.take_while(|c| {
|
||||
if *c == '{' {
|
||||
return false;
|
||||
}
|
||||
if *c == '}' {
|
||||
end = true;
|
||||
};
|
||||
!end && !c.is_whitespace()
|
||||
})
|
||||
.map(char::len_utf8)
|
||||
.sum();
|
||||
if len > 0 && end {
|
||||
let tok = self.eat();
|
||||
debug_assert_eq!(
|
||||
tok,
|
||||
Some(lex::Token {
|
||||
kind: lex::Kind::Open(Delimiter::BraceEqual),
|
||||
len: 2,
|
||||
})
|
||||
.map(char::len_utf8)
|
||||
.sum();
|
||||
if len > 0 && end {
|
||||
let tok = self.eat();
|
||||
debug_assert_eq!(
|
||||
tok,
|
||||
Some(lex::Token {
|
||||
kind: lex::Kind::Open(Delimiter::BraceEqual),
|
||||
len: 2,
|
||||
})
|
||||
);
|
||||
self.lexer = lex::Lexer::new(ahead);
|
||||
let span_format = self.span.after(len);
|
||||
kind = RawFormat;
|
||||
self.events[opener_event].kind = EventKind::Enter(kind);
|
||||
self.events[opener_event].span = span_format;
|
||||
self.span = span_format.translate(1); // }
|
||||
span_outer = Some(span_format);
|
||||
}
|
||||
);
|
||||
self.lexer = lex::Lexer::new(ahead);
|
||||
let span_format = self.span.after(len);
|
||||
kind = RawFormat;
|
||||
self.events[opener_event].kind = EventKind::Enter(kind);
|
||||
self.events[opener_event].span = span_format;
|
||||
self.span = span_format.translate(1); // }
|
||||
span_outer = Some(span_format);
|
||||
}
|
||||
break;
|
||||
}
|
||||
if !matches!(t.kind, lex::Kind::Whitespace) {
|
||||
if non_whitespace_first.is_none() {
|
||||
non_whitespace_first = Some((t.kind, span_inner.end()));
|
||||
}
|
||||
non_whitespace_last = Some((t.kind, span_inner.end() + t.len));
|
||||
break;
|
||||
}
|
||||
if !matches!(t.kind, lex::Kind::Whitespace) {
|
||||
if non_whitespace_first.is_none() {
|
||||
non_whitespace_first = Some((t.kind, span_inner.end()));
|
||||
}
|
||||
span_inner = span_inner.extend(t.len);
|
||||
self.reset_span();
|
||||
non_whitespace_last = Some((t.kind, span_inner.end() + t.len));
|
||||
}
|
||||
span_inner = span_inner.extend(t.len);
|
||||
self.reset_span();
|
||||
}
|
||||
|
||||
if let Some((lex::Kind::Seq(lex::Sequence::Backtick), pos)) = non_whitespace_first {
|
||||
span_inner = span_inner.with_start(pos);
|
||||
}
|
||||
if let Some((lex::Kind::Seq(lex::Sequence::Backtick), pos)) = non_whitespace_last {
|
||||
span_inner = span_inner.with_end(pos);
|
||||
}
|
||||
if let Some((lex::Kind::Seq(lex::Sequence::Backtick), pos)) = non_whitespace_first {
|
||||
span_inner = span_inner.with_start(pos);
|
||||
}
|
||||
if let Some((lex::Kind::Seq(lex::Sequence::Backtick), pos)) = non_whitespace_last {
|
||||
span_inner = span_inner.with_end(pos);
|
||||
}
|
||||
|
||||
self.push_sp(EventKind::Str, span_inner);
|
||||
self.push_sp(EventKind::Exit(kind), span_outer.unwrap_or(self.span));
|
||||
self.push_sp(EventKind::Str, span_inner);
|
||||
self.push_sp(EventKind::Exit(kind), span_outer.unwrap_or(self.span));
|
||||
|
||||
if let Some((non_empty, span)) = self.ahead_attributes() {
|
||||
self.span = span;
|
||||
if non_empty {
|
||||
self.events[e_attr] = Event {
|
||||
kind: EventKind::Attributes,
|
||||
span,
|
||||
};
|
||||
}
|
||||
if let Some((non_empty, span)) = self.ahead_attributes() {
|
||||
self.span = span;
|
||||
if non_empty {
|
||||
self.events[e_attr] = Event {
|
||||
kind: EventKind::Attributes,
|
||||
span,
|
||||
};
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
Some(())
|
||||
}
|
||||
|
||||
fn parse_attributes(&mut self, first: &lex::Token) -> Option<()> {
|
||||
|
|
@ -414,115 +414,113 @@ impl<I: Iterator<Item = char> + Clone> Parser<I> {
|
|||
}
|
||||
|
||||
fn parse_container(&mut self, first: &lex::Token) -> Option<()> {
|
||||
Delim::from_token(first.kind).and_then(|(delim, dir)| {
|
||||
self.openers
|
||||
.iter()
|
||||
.rposition(|(d, _)| {
|
||||
*d == delim || matches!((d, delim), (Delim::Span(..), Delim::Span(..)))
|
||||
})
|
||||
.and_then(|o| {
|
||||
if matches!(dir, Dir::Open) {
|
||||
return None;
|
||||
let (delim, dir) = Delim::from_token(first.kind)?;
|
||||
|
||||
self.openers
|
||||
.iter()
|
||||
.rposition(|(d, _)| {
|
||||
*d == delim || matches!((d, delim), (Delim::Span(..), Delim::Span(..)))
|
||||
})
|
||||
.and_then(|o| {
|
||||
if matches!(dir, Dir::Open) {
|
||||
return None;
|
||||
}
|
||||
let whitespace_after = self.events.back().map_or(false, |ev| {
|
||||
matches!(ev.kind, EventKind::Whitespace | EventKind::Atom(Softbreak))
|
||||
});
|
||||
if matches!(dir, Dir::Both) && whitespace_after {
|
||||
return None;
|
||||
}
|
||||
|
||||
let (d, e) = self.openers[o];
|
||||
let e_attr = e;
|
||||
let e_opener = e + 1;
|
||||
if e_opener == self.events.len() - 1 {
|
||||
// empty container
|
||||
return None;
|
||||
}
|
||||
|
||||
let inner_span = self.events[e_opener].span.between(self.span);
|
||||
let mut closed = match DelimEventKind::from(d) {
|
||||
DelimEventKind::Container(cont) => {
|
||||
self.events[e_opener].kind = EventKind::Enter(cont);
|
||||
self.push(EventKind::Exit(cont))
|
||||
}
|
||||
let whitespace_after = self.events.back().map_or(false, |ev| {
|
||||
matches!(ev.kind, EventKind::Whitespace | EventKind::Atom(Softbreak))
|
||||
});
|
||||
if matches!(dir, Dir::Both) && whitespace_after {
|
||||
return None;
|
||||
DelimEventKind::Quote(ty) => {
|
||||
self.events[e_opener].kind =
|
||||
EventKind::Atom(Atom::Quote { ty, left: true });
|
||||
self.push(EventKind::Atom(Atom::Quote { ty, left: false }))
|
||||
}
|
||||
DelimEventKind::Span(ty) => self.post_span(ty, e_opener),
|
||||
};
|
||||
self.openers.drain(o..);
|
||||
|
||||
let (d, e) = self.openers[o];
|
||||
let e_attr = e;
|
||||
let e_opener = e + 1;
|
||||
if e_opener == self.events.len() - 1 {
|
||||
// empty container
|
||||
return None;
|
||||
}
|
||||
|
||||
let inner_span = self.events[e_opener].span.between(self.span);
|
||||
let mut closed = match DelimEventKind::from(d) {
|
||||
DelimEventKind::Container(cont) => {
|
||||
self.events[e_opener].kind = EventKind::Enter(cont);
|
||||
self.push(EventKind::Exit(cont))
|
||||
}
|
||||
DelimEventKind::Quote(ty) => {
|
||||
self.events[e_opener].kind =
|
||||
EventKind::Atom(Atom::Quote { ty, left: true });
|
||||
self.push(EventKind::Atom(Atom::Quote { ty, left: false }))
|
||||
}
|
||||
DelimEventKind::Span(ty) => self.post_span(ty, e_opener),
|
||||
};
|
||||
self.openers.drain(o..);
|
||||
|
||||
if closed.is_some() {
|
||||
let event_closer = &mut self.events.back_mut().unwrap();
|
||||
if event_closer.span.is_empty()
|
||||
&& matches!(
|
||||
event_closer.kind,
|
||||
EventKind::Exit(
|
||||
Container::ReferenceLink | Container::ReferenceImage
|
||||
)
|
||||
)
|
||||
{
|
||||
event_closer.span = inner_span;
|
||||
self.events[e_opener].span = inner_span;
|
||||
}
|
||||
}
|
||||
|
||||
if let Some((non_empty, span)) = self.ahead_attributes() {
|
||||
if non_empty {
|
||||
self.events[e_attr] = Event {
|
||||
kind: EventKind::Attributes,
|
||||
span,
|
||||
};
|
||||
}
|
||||
|
||||
if closed.is_none() {
|
||||
self.events[e_opener].kind = EventKind::Enter(Container::Span);
|
||||
closed = self.push(EventKind::Exit(Container::Span));
|
||||
}
|
||||
|
||||
self.span = span;
|
||||
}
|
||||
|
||||
closed
|
||||
})
|
||||
.or_else(|| {
|
||||
if matches!(dir, Dir::Close) {
|
||||
return None;
|
||||
}
|
||||
if matches!(dir, Dir::Both)
|
||||
&& self
|
||||
.peek()
|
||||
.map_or(true, |t| matches!(t.kind, lex::Kind::Whitespace))
|
||||
if closed.is_some() {
|
||||
let event_closer = &mut self.events.back_mut().unwrap();
|
||||
if event_closer.span.is_empty()
|
||||
&& matches!(
|
||||
event_closer.kind,
|
||||
EventKind::Exit(Container::ReferenceLink | Container::ReferenceImage)
|
||||
)
|
||||
{
|
||||
return None;
|
||||
event_closer.span = inner_span;
|
||||
self.events[e_opener].span = inner_span;
|
||||
}
|
||||
if matches!(delim, Delim::SingleQuoted | Delim::DoubleQuoted)
|
||||
&& self
|
||||
.events
|
||||
.back()
|
||||
.map_or(false, |ev| matches!(ev.kind, EventKind::Str))
|
||||
{
|
||||
return None;
|
||||
}
|
||||
|
||||
if let Some((non_empty, span)) = self.ahead_attributes() {
|
||||
if non_empty {
|
||||
self.events[e_attr] = Event {
|
||||
kind: EventKind::Attributes,
|
||||
span,
|
||||
};
|
||||
}
|
||||
self.openers.push((delim, self.events.len()));
|
||||
// push dummy event in case attributes are encountered after closing delimiter
|
||||
self.push_sp(EventKind::Placeholder, Span::empty_at(self.span.start()));
|
||||
// use non-opener for now, replace if closed later
|
||||
self.push(match delim {
|
||||
Delim::SingleQuoted => EventKind::Atom(Quote {
|
||||
ty: QuoteType::Single,
|
||||
left: false,
|
||||
}),
|
||||
Delim::DoubleQuoted => EventKind::Atom(Quote {
|
||||
ty: QuoteType::Double,
|
||||
left: true,
|
||||
}),
|
||||
_ => EventKind::Str,
|
||||
})
|
||||
|
||||
if closed.is_none() {
|
||||
self.events[e_opener].kind = EventKind::Enter(Container::Span);
|
||||
closed = self.push(EventKind::Exit(Container::Span));
|
||||
}
|
||||
|
||||
self.span = span;
|
||||
}
|
||||
|
||||
closed
|
||||
})
|
||||
.or_else(|| {
|
||||
if matches!(dir, Dir::Close) {
|
||||
return None;
|
||||
}
|
||||
if matches!(dir, Dir::Both)
|
||||
&& self
|
||||
.peek()
|
||||
.map_or(true, |t| matches!(t.kind, lex::Kind::Whitespace))
|
||||
{
|
||||
return None;
|
||||
}
|
||||
if matches!(delim, Delim::SingleQuoted | Delim::DoubleQuoted)
|
||||
&& self
|
||||
.events
|
||||
.back()
|
||||
.map_or(false, |ev| matches!(ev.kind, EventKind::Str))
|
||||
{
|
||||
return None;
|
||||
}
|
||||
self.openers.push((delim, self.events.len()));
|
||||
// push dummy event in case attributes are encountered after closing delimiter
|
||||
self.push_sp(EventKind::Placeholder, Span::empty_at(self.span.start()));
|
||||
// use non-opener for now, replace if closed later
|
||||
self.push(match delim {
|
||||
Delim::SingleQuoted => EventKind::Atom(Quote {
|
||||
ty: QuoteType::Single,
|
||||
left: false,
|
||||
}),
|
||||
Delim::DoubleQuoted => EventKind::Atom(Quote {
|
||||
ty: QuoteType::Double,
|
||||
left: true,
|
||||
}),
|
||||
_ => EventKind::Str,
|
||||
})
|
||||
})
|
||||
})
|
||||
}
|
||||
|
||||
fn ahead_attributes(&mut self) -> Option<(bool, Span)> {
|
||||
|
|
@ -546,7 +544,7 @@ impl<I: Iterator<Item = char> + Clone> Parser<I> {
|
|||
|
||||
fn post_span(&mut self, ty: SpanType, opener_event: usize) -> Option<()> {
|
||||
let mut ahead = self.lexer.chars();
|
||||
match ahead.next() {
|
||||
let (kind, span) = match ahead.next() {
|
||||
Some(opener @ ('[' | '(')) => {
|
||||
let img = ty == SpanType::Image;
|
||||
let (closer, kind) = match opener {
|
||||
|
|
@ -573,14 +571,13 @@ impl<I: Iterator<Item = char> + Clone> Parser<I> {
|
|||
})
|
||||
}
|
||||
_ => None,
|
||||
}
|
||||
.map(|(kind, span)| {
|
||||
self.lexer = lex::Lexer::new(ahead);
|
||||
self.events[opener_event].kind = EventKind::Enter(kind);
|
||||
self.events[opener_event].span = span;
|
||||
self.span = span.translate(1);
|
||||
self.push_sp(EventKind::Exit(kind), span);
|
||||
})
|
||||
}?;
|
||||
|
||||
self.lexer = lex::Lexer::new(ahead);
|
||||
self.events[opener_event].kind = EventKind::Enter(kind);
|
||||
self.events[opener_event].span = span;
|
||||
self.span = span.translate(1);
|
||||
self.push_sp(EventKind::Exit(kind), span)
|
||||
}
|
||||
|
||||
fn parse_atom(&mut self, first: &lex::Token) -> Option<()> {
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue