spip2md/spip2md/spip.lark
2023-04-26 14:29:14 +02:00

60 lines
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start: _N? block ( _N+ block )+ _N*
?block: heading
| SEPARATOR
| unordered_list
| ordered_list
| table
| paragraph
heading: "{{{" ( TEXT | link | nested_italic | nested_bold ) "}}}"
SEPARATOR: "----" "-"*
unordered_list: ( "-*" list_element _N )+
ordered_list: ( "-#" list_element _N )+
list_element: _inline_format
table: ( row _N )+
row: ( "|" cell )+ "|"
cell: _inline_format
paragraph: ( _inline_format _N? )+
// Windows or Unix line break
_N: /\r/? /\n/
_inline_format: bold
| italic
| link
| TEXT
bold: "{{" ( TEXT | link | nested_italic )+ "}}"
italic: "{" ( TEXT | link | nested_bold )+ "}"
nested_bold: _NOT_LBRACE "{{" ( TEXT | link ) "}}" _NOT_RBRACE -> bold
nested_italic: _NOT_LBRACE "{" ( TEXT | link ) "}" _NOT_RBRACE -> italic
_NOT_LBRACE: /[^\{]/
_NOT_RBRACE: /[^\}]/
?link: internal_link
| external_link
| footnote
| glossary
internal_link: "[" TEXT "->" TEXT "]"
external_link: "[" TEXT "->" _PROTOCOL "://" TEXT "]"
// Protocol, probably http(s)
// Is made of 2 to 8 latin letters
_PROTOCOL: /[a-zA-Z]{2,8}/
footnote: "[[" TEXT "]]"
glossary: "[?" TEXT "]"
// Pure text :
// - Never contains line breaks
// - Never contains curly braces
TEXT: /[^\r\n\{\}]/+