Trait pgn_reader::Visitor
source · pub trait Visitor {
type Result;
fn end_game(&mut self) -> Self::Result;
fn begin_game(&mut self) { ... }
fn begin_headers(&mut self) { ... }
fn header(&mut self, _key: &[u8], _value: RawHeader<'_>) { ... }
fn end_headers(&mut self) -> Skip { ... }
fn san(&mut self, _san_plus: SanPlus) { ... }
fn nag(&mut self, _nag: Nag) { ... }
fn comment(&mut self, _comment: RawComment<'_>) { ... }
fn begin_variation(&mut self) -> Skip { ... }
fn end_variation(&mut self) { ... }
fn outcome(&mut self, _outcome: Option<Outcome>) { ... }
}Expand description
Consumes games from a reader.
Required Associated Types§
Required Methods§
Provided Methods§
sourcefn begin_game(&mut self)
fn begin_game(&mut self)
Called at the start of the game.
Examples found in repository?
src/reader.rs (line 477)
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fn read_game<V: Visitor>(&mut self, visitor: &mut V) -> Result<Option<V::Result>, Self::Err> {
self.skip_bom()?;
self.skip_whitespace()?;
if self.fill_buffer_and_peek()?.is_none() {
return Ok(None);
}
visitor.begin_game();
visitor.begin_headers();
self.read_headers(visitor)?;
if let Skip(false) = visitor.end_headers() {
self.read_movetext(visitor)?;
} else {
self.skip_movetext()?;
}
self.skip_whitespace()?;
Ok(Some(visitor.end_game()))
}sourcefn begin_headers(&mut self)
fn begin_headers(&mut self)
Called directly before reading game headers.
Examples found in repository?
src/reader.rs (line 478)
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fn read_game<V: Visitor>(&mut self, visitor: &mut V) -> Result<Option<V::Result>, Self::Err> {
self.skip_bom()?;
self.skip_whitespace()?;
if self.fill_buffer_and_peek()?.is_none() {
return Ok(None);
}
visitor.begin_game();
visitor.begin_headers();
self.read_headers(visitor)?;
if let Skip(false) = visitor.end_headers() {
self.read_movetext(visitor)?;
} else {
self.skip_movetext()?;
}
self.skip_whitespace()?;
Ok(Some(visitor.end_game()))
}sourcefn header(&mut self, _key: &[u8], _value: RawHeader<'_>)
fn header(&mut self, _key: &[u8], _value: RawHeader<'_>)
Called when parsing a game header like [White "Deep Blue"].
Examples found in repository?
src/reader.rs (lines 190-193)
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fn read_headers<V: Visitor>(&mut self, visitor: &mut V) -> Result<(), Self::Err> {
while let Some(ch) = self.fill_buffer_and_peek()? {
match ch {
b'[' => {
self.bump();
let left_quote = match memchr::memchr3(b'"', b'\n', b']', self.buffer()) {
Some(left_quote) if self.buffer()[left_quote] == b'"' => left_quote,
Some(eol) => {
self.consume(eol + 1);
self.skip_ket()?;
continue;
}
None => {
self.consume_all();
self.skip_line()?;
return Err(Self::invalid_data());
}
};
let space = if left_quote > 0 && self.buffer()[left_quote - 1] == b' ' {
left_quote - 1
} else {
left_quote
};
let value_start = left_quote + 1;
let mut right_quote = value_start;
let consumed = loop {
match memchr::memchr3(b'\\', b'"', b'\n', &self.buffer()[right_quote..]) {
Some(delta) if self.buffer()[right_quote + delta] == b'"' => {
right_quote += delta;
break right_quote + 1;
}
Some(delta) if self.buffer()[right_quote + delta] == b'\n' => {
right_quote += delta;
break right_quote;
}
Some(delta) => {
// Skip escaped character.
right_quote = min(right_quote + delta + 2, self.remaining());
}
None => {
self.consume_all();
self.skip_line()?;
return Err(Self::invalid_data());
}
}
};
visitor.header(
&self.buffer()[..space],
RawHeader(&self.buffer()[value_start..right_quote]),
);
self.consume(consumed);
self.skip_ket()?;
}
b'%' => self.skip_line()?,
_ => return Ok(()),
}
}
Ok(())
}sourcefn end_headers(&mut self) -> Skip
fn end_headers(&mut self) -> Skip
Called after reading the headers of a game. May skip quickly over
the following move text directly to
end_game().
Examples found in repository?
src/reader.rs (line 480)
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fn read_game<V: Visitor>(&mut self, visitor: &mut V) -> Result<Option<V::Result>, Self::Err> {
self.skip_bom()?;
self.skip_whitespace()?;
if self.fill_buffer_and_peek()?.is_none() {
return Ok(None);
}
visitor.begin_game();
visitor.begin_headers();
self.read_headers(visitor)?;
if let Skip(false) = visitor.end_headers() {
self.read_movetext(visitor)?;
} else {
self.skip_movetext()?;
}
self.skip_whitespace()?;
Ok(Some(visitor.end_game()))
}sourcefn san(&mut self, _san_plus: SanPlus)
fn san(&mut self, _san_plus: SanPlus)
Called for each move, like Nf3+.
Examples found in repository?
src/reader.rs (lines 332-335)
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fn read_movetext<V: Visitor>(&mut self, visitor: &mut V) -> Result<(), Self::Err> {
while let Some(ch) = self.fill_buffer_and_peek()? {
match ch {
b'{' => {
self.bump();
let right_brace = if let Some(right_brace) = memchr::memchr(b'}', self.buffer())
{
right_brace
} else {
self.consume_all();
self.skip_until(b'}')?;
self.bump();
return Err(Self::invalid_data());
};
visitor.comment(RawComment(&self.buffer()[..right_brace]));
self.consume(right_brace + 1);
}
b'\n' => {
self.bump();
match self.peek() {
Some(b'%') => {
self.bump();
self.skip_line()?;
}
Some(b'[') | Some(b'\n') => {
break;
}
Some(b'\r') => {
self.bump();
if self.peek() == Some(b'\n') {
break;
}
}
_ => continue,
}
}
b';' => {
self.bump();
self.skip_until(b'\n')?;
}
b'1' => {
self.bump();
if self.buffer().starts_with(b"-0") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::White,
}));
} else if self.buffer().starts_with(b"/2-1/2") {
self.consume(6);
visitor.outcome(Some(Outcome::Draw));
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'0' => {
self.bump();
if self.buffer().starts_with(b"-1") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::Black,
}));
} else if self.buffer().starts_with(b"-0") {
// Castling notation with zeros.
self.consume(2);
let side = if self.buffer().starts_with(b"-0") {
self.consume(2);
CastlingSide::QueenSide
} else {
CastlingSide::KingSide
};
let suffix = match self.peek() {
Some(b'+') => Some(Suffix::Check),
Some(b'#') => Some(Suffix::Checkmate),
_ => None,
};
visitor.san(SanPlus {
san: San::Castle(side),
suffix,
});
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'(' => {
self.bump();
if let Skip(true) = visitor.begin_variation() {
self.skip_variation()?;
}
}
b')' => {
self.bump();
visitor.end_variation();
}
b'$' => {
self.bump();
let token_end = self.find_token_end(0);
if let Ok(nag) = btoi::btou(&self.buffer()[..token_end]) {
visitor.nag(Nag(nag));
}
self.consume(token_end);
}
b'!' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::BRILLIANT_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::SPECULATIVE_MOVE);
}
_ => {
visitor.nag(Nag::GOOD_MOVE);
}
}
}
b'?' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::DUBIOUS_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::BLUNDER);
}
_ => {
visitor.nag(Nag::MISTAKE);
}
}
}
b'*' => {
visitor.outcome(None);
self.bump();
}
b' ' | b'\t' | b'\r' | b'P' | b'.' => {
self.bump();
}
_ => {
let token_end = self.find_token_end(1);
if ch > b'9' || ch == b'-' {
if let Ok(san) = SanPlus::from_ascii(&self.buffer()[..token_end]) {
visitor.san(san);
}
}
self.consume(token_end);
}
}
}
Ok(())
}sourcefn nag(&mut self, _nag: Nag)
fn nag(&mut self, _nag: Nag)
Called for each numeric annotation glyph like !? or $7.
Examples found in repository?
src/reader.rs (line 355)
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fn read_movetext<V: Visitor>(&mut self, visitor: &mut V) -> Result<(), Self::Err> {
while let Some(ch) = self.fill_buffer_and_peek()? {
match ch {
b'{' => {
self.bump();
let right_brace = if let Some(right_brace) = memchr::memchr(b'}', self.buffer())
{
right_brace
} else {
self.consume_all();
self.skip_until(b'}')?;
self.bump();
return Err(Self::invalid_data());
};
visitor.comment(RawComment(&self.buffer()[..right_brace]));
self.consume(right_brace + 1);
}
b'\n' => {
self.bump();
match self.peek() {
Some(b'%') => {
self.bump();
self.skip_line()?;
}
Some(b'[') | Some(b'\n') => {
break;
}
Some(b'\r') => {
self.bump();
if self.peek() == Some(b'\n') {
break;
}
}
_ => continue,
}
}
b';' => {
self.bump();
self.skip_until(b'\n')?;
}
b'1' => {
self.bump();
if self.buffer().starts_with(b"-0") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::White,
}));
} else if self.buffer().starts_with(b"/2-1/2") {
self.consume(6);
visitor.outcome(Some(Outcome::Draw));
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'0' => {
self.bump();
if self.buffer().starts_with(b"-1") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::Black,
}));
} else if self.buffer().starts_with(b"-0") {
// Castling notation with zeros.
self.consume(2);
let side = if self.buffer().starts_with(b"-0") {
self.consume(2);
CastlingSide::QueenSide
} else {
CastlingSide::KingSide
};
let suffix = match self.peek() {
Some(b'+') => Some(Suffix::Check),
Some(b'#') => Some(Suffix::Checkmate),
_ => None,
};
visitor.san(SanPlus {
san: San::Castle(side),
suffix,
});
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'(' => {
self.bump();
if let Skip(true) = visitor.begin_variation() {
self.skip_variation()?;
}
}
b')' => {
self.bump();
visitor.end_variation();
}
b'$' => {
self.bump();
let token_end = self.find_token_end(0);
if let Ok(nag) = btoi::btou(&self.buffer()[..token_end]) {
visitor.nag(Nag(nag));
}
self.consume(token_end);
}
b'!' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::BRILLIANT_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::SPECULATIVE_MOVE);
}
_ => {
visitor.nag(Nag::GOOD_MOVE);
}
}
}
b'?' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::DUBIOUS_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::BLUNDER);
}
_ => {
visitor.nag(Nag::MISTAKE);
}
}
}
b'*' => {
visitor.outcome(None);
self.bump();
}
b' ' | b'\t' | b'\r' | b'P' | b'.' => {
self.bump();
}
_ => {
let token_end = self.find_token_end(1);
if ch > b'9' || ch == b'-' {
if let Ok(san) = SanPlus::from_ascii(&self.buffer()[..token_end]) {
visitor.san(san);
}
}
self.consume(token_end);
}
}
}
Ok(())
}sourcefn comment(&mut self, _comment: RawComment<'_>)
fn comment(&mut self, _comment: RawComment<'_>)
Called for each { comment }.
Examples found in repository?
src/reader.rs (line 269)
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fn read_movetext<V: Visitor>(&mut self, visitor: &mut V) -> Result<(), Self::Err> {
while let Some(ch) = self.fill_buffer_and_peek()? {
match ch {
b'{' => {
self.bump();
let right_brace = if let Some(right_brace) = memchr::memchr(b'}', self.buffer())
{
right_brace
} else {
self.consume_all();
self.skip_until(b'}')?;
self.bump();
return Err(Self::invalid_data());
};
visitor.comment(RawComment(&self.buffer()[..right_brace]));
self.consume(right_brace + 1);
}
b'\n' => {
self.bump();
match self.peek() {
Some(b'%') => {
self.bump();
self.skip_line()?;
}
Some(b'[') | Some(b'\n') => {
break;
}
Some(b'\r') => {
self.bump();
if self.peek() == Some(b'\n') {
break;
}
}
_ => continue,
}
}
b';' => {
self.bump();
self.skip_until(b'\n')?;
}
b'1' => {
self.bump();
if self.buffer().starts_with(b"-0") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::White,
}));
} else if self.buffer().starts_with(b"/2-1/2") {
self.consume(6);
visitor.outcome(Some(Outcome::Draw));
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'0' => {
self.bump();
if self.buffer().starts_with(b"-1") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::Black,
}));
} else if self.buffer().starts_with(b"-0") {
// Castling notation with zeros.
self.consume(2);
let side = if self.buffer().starts_with(b"-0") {
self.consume(2);
CastlingSide::QueenSide
} else {
CastlingSide::KingSide
};
let suffix = match self.peek() {
Some(b'+') => Some(Suffix::Check),
Some(b'#') => Some(Suffix::Checkmate),
_ => None,
};
visitor.san(SanPlus {
san: San::Castle(side),
suffix,
});
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'(' => {
self.bump();
if let Skip(true) = visitor.begin_variation() {
self.skip_variation()?;
}
}
b')' => {
self.bump();
visitor.end_variation();
}
b'$' => {
self.bump();
let token_end = self.find_token_end(0);
if let Ok(nag) = btoi::btou(&self.buffer()[..token_end]) {
visitor.nag(Nag(nag));
}
self.consume(token_end);
}
b'!' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::BRILLIANT_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::SPECULATIVE_MOVE);
}
_ => {
visitor.nag(Nag::GOOD_MOVE);
}
}
}
b'?' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::DUBIOUS_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::BLUNDER);
}
_ => {
visitor.nag(Nag::MISTAKE);
}
}
}
b'*' => {
visitor.outcome(None);
self.bump();
}
b' ' | b'\t' | b'\r' | b'P' | b'.' => {
self.bump();
}
_ => {
let token_end = self.find_token_end(1);
if ch > b'9' || ch == b'-' {
if let Ok(san) = SanPlus::from_ascii(&self.buffer()[..token_end]) {
visitor.san(san);
}
}
self.consume(token_end);
}
}
}
Ok(())
}sourcefn begin_variation(&mut self) -> Skip
fn begin_variation(&mut self) -> Skip
Called for each (. May skip over the following variation directly
to end_variation() (or to
end_game() if no matching )
follows before the end of the game.
Examples found in repository?
src/reader.rs (line 343)
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fn read_movetext<V: Visitor>(&mut self, visitor: &mut V) -> Result<(), Self::Err> {
while let Some(ch) = self.fill_buffer_and_peek()? {
match ch {
b'{' => {
self.bump();
let right_brace = if let Some(right_brace) = memchr::memchr(b'}', self.buffer())
{
right_brace
} else {
self.consume_all();
self.skip_until(b'}')?;
self.bump();
return Err(Self::invalid_data());
};
visitor.comment(RawComment(&self.buffer()[..right_brace]));
self.consume(right_brace + 1);
}
b'\n' => {
self.bump();
match self.peek() {
Some(b'%') => {
self.bump();
self.skip_line()?;
}
Some(b'[') | Some(b'\n') => {
break;
}
Some(b'\r') => {
self.bump();
if self.peek() == Some(b'\n') {
break;
}
}
_ => continue,
}
}
b';' => {
self.bump();
self.skip_until(b'\n')?;
}
b'1' => {
self.bump();
if self.buffer().starts_with(b"-0") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::White,
}));
} else if self.buffer().starts_with(b"/2-1/2") {
self.consume(6);
visitor.outcome(Some(Outcome::Draw));
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'0' => {
self.bump();
if self.buffer().starts_with(b"-1") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::Black,
}));
} else if self.buffer().starts_with(b"-0") {
// Castling notation with zeros.
self.consume(2);
let side = if self.buffer().starts_with(b"-0") {
self.consume(2);
CastlingSide::QueenSide
} else {
CastlingSide::KingSide
};
let suffix = match self.peek() {
Some(b'+') => Some(Suffix::Check),
Some(b'#') => Some(Suffix::Checkmate),
_ => None,
};
visitor.san(SanPlus {
san: San::Castle(side),
suffix,
});
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'(' => {
self.bump();
if let Skip(true) = visitor.begin_variation() {
self.skip_variation()?;
}
}
b')' => {
self.bump();
visitor.end_variation();
}
b'$' => {
self.bump();
let token_end = self.find_token_end(0);
if let Ok(nag) = btoi::btou(&self.buffer()[..token_end]) {
visitor.nag(Nag(nag));
}
self.consume(token_end);
}
b'!' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::BRILLIANT_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::SPECULATIVE_MOVE);
}
_ => {
visitor.nag(Nag::GOOD_MOVE);
}
}
}
b'?' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::DUBIOUS_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::BLUNDER);
}
_ => {
visitor.nag(Nag::MISTAKE);
}
}
}
b'*' => {
visitor.outcome(None);
self.bump();
}
b' ' | b'\t' | b'\r' | b'P' | b'.' => {
self.bump();
}
_ => {
let token_end = self.find_token_end(1);
if ch > b'9' || ch == b'-' {
if let Ok(san) = SanPlus::from_ascii(&self.buffer()[..token_end]) {
visitor.san(san);
}
}
self.consume(token_end);
}
}
}
Ok(())
}sourcefn end_variation(&mut self)
fn end_variation(&mut self)
Called for each ). It is not guaranteed that there was a
matching (.
Examples found in repository?
src/reader.rs (line 349)
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fn read_movetext<V: Visitor>(&mut self, visitor: &mut V) -> Result<(), Self::Err> {
while let Some(ch) = self.fill_buffer_and_peek()? {
match ch {
b'{' => {
self.bump();
let right_brace = if let Some(right_brace) = memchr::memchr(b'}', self.buffer())
{
right_brace
} else {
self.consume_all();
self.skip_until(b'}')?;
self.bump();
return Err(Self::invalid_data());
};
visitor.comment(RawComment(&self.buffer()[..right_brace]));
self.consume(right_brace + 1);
}
b'\n' => {
self.bump();
match self.peek() {
Some(b'%') => {
self.bump();
self.skip_line()?;
}
Some(b'[') | Some(b'\n') => {
break;
}
Some(b'\r') => {
self.bump();
if self.peek() == Some(b'\n') {
break;
}
}
_ => continue,
}
}
b';' => {
self.bump();
self.skip_until(b'\n')?;
}
b'1' => {
self.bump();
if self.buffer().starts_with(b"-0") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::White,
}));
} else if self.buffer().starts_with(b"/2-1/2") {
self.consume(6);
visitor.outcome(Some(Outcome::Draw));
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'0' => {
self.bump();
if self.buffer().starts_with(b"-1") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::Black,
}));
} else if self.buffer().starts_with(b"-0") {
// Castling notation with zeros.
self.consume(2);
let side = if self.buffer().starts_with(b"-0") {
self.consume(2);
CastlingSide::QueenSide
} else {
CastlingSide::KingSide
};
let suffix = match self.peek() {
Some(b'+') => Some(Suffix::Check),
Some(b'#') => Some(Suffix::Checkmate),
_ => None,
};
visitor.san(SanPlus {
san: San::Castle(side),
suffix,
});
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'(' => {
self.bump();
if let Skip(true) = visitor.begin_variation() {
self.skip_variation()?;
}
}
b')' => {
self.bump();
visitor.end_variation();
}
b'$' => {
self.bump();
let token_end = self.find_token_end(0);
if let Ok(nag) = btoi::btou(&self.buffer()[..token_end]) {
visitor.nag(Nag(nag));
}
self.consume(token_end);
}
b'!' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::BRILLIANT_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::SPECULATIVE_MOVE);
}
_ => {
visitor.nag(Nag::GOOD_MOVE);
}
}
}
b'?' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::DUBIOUS_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::BLUNDER);
}
_ => {
visitor.nag(Nag::MISTAKE);
}
}
}
b'*' => {
visitor.outcome(None);
self.bump();
}
b' ' | b'\t' | b'\r' | b'P' | b'.' => {
self.bump();
}
_ => {
let token_end = self.find_token_end(1);
if ch > b'9' || ch == b'-' {
if let Ok(san) = SanPlus::from_ascii(&self.buffer()[..token_end]) {
visitor.san(san);
}
}
self.consume(token_end);
}
}
}
Ok(())
}sourcefn outcome(&mut self, _outcome: Option<Outcome>)
fn outcome(&mut self, _outcome: Option<Outcome>)
Called for each game termination, like * or 1-0.
Examples found in repository?
src/reader.rs (lines 300-302)
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fn read_movetext<V: Visitor>(&mut self, visitor: &mut V) -> Result<(), Self::Err> {
while let Some(ch) = self.fill_buffer_and_peek()? {
match ch {
b'{' => {
self.bump();
let right_brace = if let Some(right_brace) = memchr::memchr(b'}', self.buffer())
{
right_brace
} else {
self.consume_all();
self.skip_until(b'}')?;
self.bump();
return Err(Self::invalid_data());
};
visitor.comment(RawComment(&self.buffer()[..right_brace]));
self.consume(right_brace + 1);
}
b'\n' => {
self.bump();
match self.peek() {
Some(b'%') => {
self.bump();
self.skip_line()?;
}
Some(b'[') | Some(b'\n') => {
break;
}
Some(b'\r') => {
self.bump();
if self.peek() == Some(b'\n') {
break;
}
}
_ => continue,
}
}
b';' => {
self.bump();
self.skip_until(b'\n')?;
}
b'1' => {
self.bump();
if self.buffer().starts_with(b"-0") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::White,
}));
} else if self.buffer().starts_with(b"/2-1/2") {
self.consume(6);
visitor.outcome(Some(Outcome::Draw));
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'0' => {
self.bump();
if self.buffer().starts_with(b"-1") {
self.consume(2);
visitor.outcome(Some(Outcome::Decisive {
winner: Color::Black,
}));
} else if self.buffer().starts_with(b"-0") {
// Castling notation with zeros.
self.consume(2);
let side = if self.buffer().starts_with(b"-0") {
self.consume(2);
CastlingSide::QueenSide
} else {
CastlingSide::KingSide
};
let suffix = match self.peek() {
Some(b'+') => Some(Suffix::Check),
Some(b'#') => Some(Suffix::Checkmate),
_ => None,
};
visitor.san(SanPlus {
san: San::Castle(side),
suffix,
});
} else {
let token_end = self.find_token_end(0);
self.consume(token_end);
}
}
b'(' => {
self.bump();
if let Skip(true) = visitor.begin_variation() {
self.skip_variation()?;
}
}
b')' => {
self.bump();
visitor.end_variation();
}
b'$' => {
self.bump();
let token_end = self.find_token_end(0);
if let Ok(nag) = btoi::btou(&self.buffer()[..token_end]) {
visitor.nag(Nag(nag));
}
self.consume(token_end);
}
b'!' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::BRILLIANT_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::SPECULATIVE_MOVE);
}
_ => {
visitor.nag(Nag::GOOD_MOVE);
}
}
}
b'?' => {
self.bump();
match self.peek() {
Some(b'!') => {
self.bump();
visitor.nag(Nag::DUBIOUS_MOVE);
}
Some(b'?') => {
self.bump();
visitor.nag(Nag::BLUNDER);
}
_ => {
visitor.nag(Nag::MISTAKE);
}
}
}
b'*' => {
visitor.outcome(None);
self.bump();
}
b' ' | b'\t' | b'\r' | b'P' | b'.' => {
self.bump();
}
_ => {
let token_end = self.find_token_end(1);
if ch > b'9' || ch == b'-' {
if let Ok(san) = SanPlus::from_ascii(&self.buffer()[..token_end]) {
visitor.san(san);
}
}
self.consume(token_end);
}
}
}
Ok(())
}