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tested grammar for reading entries (parsing quite slow)

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Trilarion
2020-09-02 14:45:25 +02:00
parent a1ce1809f3
commit 60fd9ed93e
21 changed files with 118 additions and 50 deletions
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code/grammar_entries.lark
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@ -1,15 +1,21 @@
start: title description property+ _E note? _E? building
start: title description property+ (_E note)? _E building
title: "# " /(?! ).+(?<! )/ "\n" _E // not starting or ending with a space
title: "#" /(?! ).+(?<! )/ "\n" _E // not starting or ending with a space
description: "_" /(?! ).+(?<![ _])/ "_\n" _E // single line not ending with underscore
property: "- " _key ": " _value "\n" // a property on a single line "- key: value"
_key: /(?! ).+?(?=:)/ // key: everything until next ":"
_value: /.+(?<! )/ // everything until the end of the line
building: "## Building\n" _E property+ _E? note // the "building" section
note: /(?![\-#]).*\n/* // Unstructured text, not starting with - or #
_E: /^$\n/m // empty new line
building: "## Building\n" (_E property+)? (_E note)? // the "building" section
property: "-" _key ":" _values "\n"? // a property on a single line "- key: value"
_key: /(?! ).+?(?=:)(?<! )/ // key: everything until next ":", not beginning or ending with a space
_values: [_value ("," _value)*] // a comma separated list
_value: quoted_value | unquoted_value // quoted or unquoted values
quoted_value: /\".+?\"/ // with quotation marks, can contain commas
unquoted_value: /(?![ \"])[^,\n]+(?<![ ])/ // cannot contain commas, cannot start or end with quotation mark
_E: /^$\n/m // empty new line
%import common.WS
%ignore WS