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Add compatibility with Lichess PGNs (support for multiple games, support for move nits) #14

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Add compatibility with Lichess PGNs (support for multiple games, support for move nits) #14

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a27025b
Update parser.peg to accept lichess move nags
vladkvit Sep 14, 2024
ea04329
Update autogenerated parser.py
vladkvit Sep 14, 2024
ca69c79
Add support for multiple games
vladkvit Sep 14, 2024
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9 changes: 7 additions & 2 deletions pgn_parser/parser.peg
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Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,13 @@ grammar PGN

# PGN Spec: http://www.saremba.de/chessgml/standards/pgn/pgn-complete.htm
# Representation of a full game in pgn format, tag_pairs, movetext and score

games <- game+ %make_games

game <- tag_pairs:tag_pairs [\n]? gcomment:comment? movetext:movetext score:score? [\s]* %make_game

# A tag pair is a key, value store in the form [Key "Value"]
tag_pairs <- tag_pair* %make_tag_pairs
tag_pairs <- tag_pair+ %make_tag_pairs
tag_pair <- "[" dlm key dlm "\"" value "\"" dlm "]" dlm %make_tag_pair
key <- [A-Za-z0-9_]+
value <- [^\"]*
Expand Down Expand Up @@ -35,7 +38,9 @@ blacks_move <- ".."

# A NAG is a numeric annotation glyph, representing anontations on a move such as !! ($3)
nags <- nag+
nag <- "$" [0-9]+ dlm
nag <- ("$" [0-9]+ / symbolic_nag) dlm
symbolic_nag <- "!!" / "??" / "!?" / "?!" / "!" / "?"


# A var or variation is a list of one or more moves surrounded by ()
variations <- variation+ %make_variations
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