tree-sitter-pgn


Nametree-sitter-pgn JSON
Version 1.1.4 PyPI version JSON
download
home_pageNone
SummaryPGN grammar for tree-sitter
upload_time2024-09-19 15:08:52
maintainerNone
docs_urlNone
authorNone
requires_python>=3.8
licenseBSD
keywords incremental parsing tree-sitter pgn chess
VCS
bugtrack_url
requirements No requirements were recorded.
Travis-CI No Travis.
coveralls test coverage No coveralls.
            # tree-sitter-pgn

## Overview

Chess Portable Game Notation (PGN) grammar for [tree-sitter](https://github.com/tree-sitter/tree-sitter).

## Used in

 * [Emacs pygn-mode](https://github.com/dwcoates/pygn-mode)

## Highlighting Example

<a href="/doc/images/pgn_syntax_highlight.png">
    <img src="/doc/images/pgn_syntax_highlight.png" width=500/>
</a>

## Python Example

```python
import more_itertools
from tree_sitter import Language, Parser
import tree_sitter_pgn as ts_pgn

PGN_LANGUAGE = Language(ts_pgn.language())
parser = Parser(PGN_LANGUAGE)

query = PGN_LANGUAGE.query(
    '''
    (series_of_games
      game: (game) @game)

    (movetext
      san_move: (san_move) @san_move)

    (movetext
      lan_move: (lan_move) @lan_move)
    ''')

with open('input_file.pgn', 'rb') as file:
    tree = parser.parse(file.read())

matches = query.captures(tree.root_node)

merged_nodes = [
    *matches.get('game', []),
    *matches.get('san_move', []),
    *matches.get('lan_move', []),
]
merged_nodes = sorted(merged_nodes, key=lambda elt: elt.start_byte)

for game in more_itertools.split_before(merged_nodes, lambda node: node.type == 'game'):
    main_line = []
    for node in game:
        if node.type in ['san_move', 'lan_move'] and node.text is not None:
            main_line.append(node.text.decode().strip())
            continue
    print(' '.join(main_line))
```

## References

 * [PGN specification](http://www.saremba.de/chessgml/standards/pgn/pgn-complete.htm)
 * [Commonly-used extensions](https://www.enpassant.dk/chess/palview/enhancedpgn.htm)
 * [Commonly-used annotation glyphs](https://en.wikipedia.org/wiki/Numeric_Annotation_Glyphs)

            

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    "description": "# tree-sitter-pgn\n\n## Overview\n\nChess Portable Game Notation (PGN) grammar for [tree-sitter](https://github.com/tree-sitter/tree-sitter).\n\n## Used in\n\n * [Emacs pygn-mode](https://github.com/dwcoates/pygn-mode)\n\n## Highlighting Example\n\n<a href=\"/doc/images/pgn_syntax_highlight.png\">\n    <img src=\"/doc/images/pgn_syntax_highlight.png\" width=500/>\n</a>\n\n## Python Example\n\n```python\nimport more_itertools\nfrom tree_sitter import Language, Parser\nimport tree_sitter_pgn as ts_pgn\n\nPGN_LANGUAGE = Language(ts_pgn.language())\nparser = Parser(PGN_LANGUAGE)\n\nquery = PGN_LANGUAGE.query(\n    '''\n    (series_of_games\n      game: (game) @game)\n\n    (movetext\n      san_move: (san_move) @san_move)\n\n    (movetext\n      lan_move: (lan_move) @lan_move)\n    ''')\n\nwith open('input_file.pgn', 'rb') as file:\n    tree = parser.parse(file.read())\n\nmatches = query.captures(tree.root_node)\n\nmerged_nodes = [\n    *matches.get('game', []),\n    *matches.get('san_move', []),\n    *matches.get('lan_move', []),\n]\nmerged_nodes = sorted(merged_nodes, key=lambda elt: elt.start_byte)\n\nfor game in more_itertools.split_before(merged_nodes, lambda node: node.type == 'game'):\n    main_line = []\n    for node in game:\n        if node.type in ['san_move', 'lan_move'] and node.text is not None:\n            main_line.append(node.text.decode().strip())\n            continue\n    print(' '.join(main_line))\n```\n\n## References\n\n * [PGN specification](http://www.saremba.de/chessgml/standards/pgn/pgn-complete.htm)\n * [Commonly-used extensions](https://www.enpassant.dk/chess/palview/enhancedpgn.htm)\n * [Commonly-used annotation glyphs](https://en.wikipedia.org/wiki/Numeric_Annotation_Glyphs)\n",
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