vis

a vi-like editor based on Plan 9's structural regular expressions
mediawiki.lua

(1747B)
      1 -- Copyright 2006-2025 Mitchell. See LICENSE.
      2 -- MediaWiki LPeg lexer.
      3 -- Contributed by Alexander Misel.
      4 
      5 local lexer = require('lexer')
      6 local token, word_match = lexer.token, lexer.word_match
      7 local P, S, B = lpeg.P, lpeg.S, lpeg.B
      8 
      9 local lex = lexer.new('mediawiki')
     10 
     11 -- Comments.
     12 lex:add_rule('comment', token(lexer.COMMENT, lexer.range('<!--', '-->')))
     13 
     14 -- HTML-like tags
     15 local tag_start = token(lexer.TAG, '<' * P('/')^-1 * lexer.alnum^1 * lexer.space^0)
     16 local dq_str = '"' * ((lexer.any - S('>"\\')) + ('\\' * lexer.any))^0 * '"'
     17 local tag_attr = token(lexer.ATTRIBUTE, lexer.alpha^1 * lexer.space^0 *
     18 	('=' * lexer.space^0 * (dq_str + (lexer.any - lexer.space - '>')^0)^-1)^0 * lexer.space^0)
     19 local tag_end = token(lexer.TAG, P('/')^-1 * '>')
     20 lex:add_rule('tag', tag_start * tag_attr^0 * tag_end)
     21 
     22 -- Link
     23 lex:add_rule('link', token(lexer.STRING, S('[]')))
     24 lex:add_rule('internal_link', B('[[') * token(lexer.LINK, (lexer.any - '|' - ']]')^1))
     25 
     26 -- Templates and parser functions.
     27 lex:add_rule('template', token(lexer.OPERATOR, S('{}')))
     28 lex:add_rule('parser_func',
     29 	B('{{') * token(lexer.FUNCTION, '#' * lexer.alpha^1 + lexer.upper^1 * ':'))
     30 lex:add_rule('template_name', B('{{') * token(lexer.LINK, (lexer.any - S('{}|'))^1))
     31 
     32 -- Operators.
     33 lex:add_rule('operator', token(lexer.OPERATOR, S('-=|#~!')))
     34 
     35 -- Behavior switches
     36 local start_pat = P(function(_, pos) return pos == 1 end)
     37 lex:add_rule('behavior_switch', (B(lexer.space) + start_pat) * token('behavior_switch', word_match(
     38 	'__TOC__ __FORCETOC__ __NOTOC__ __NOEDITSECTION__ __NOCC__ __NOINDEX__')) * #lexer.space)
     39 lex:add_style('behavior_switch', lexer.styles.keyword)
     40 
     41 lexer.property['scintillua.comment'] = '<!--|-->'
     42 lexer.property['scintillua.angle.braces'] = '1'
     43 
     44 return lex