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-- Copyright 2006-2017 Mitchell mitchell.att.foicica.com. See LICENSE.
-- Gettext LPeg lexer.
local l = require('lexer')
local token, word_match = l.token, l.word_match
local P, R, S = lpeg.P, lpeg.R, lpeg.S
local M = {_NAME = 'gettext'}
-- Whitespace.
local ws = token(l.WHITESPACE, l.space^1)
-- Comments.
local comment = token(l.COMMENT, '#' * S(': .~') * l.nonnewline^0)
-- Strings.
local string = token(l.STRING, l.delimited_range('"', true))
-- Keywords.
local keyword = token(l.KEYWORD, word_match({
'msgid', 'msgid_plural', 'msgstr', 'fuzzy', 'c-format', 'no-c-format'
}, '-', true))
-- Identifiers.
local identifier = token(l.IDENTIFIER, l.word)
-- Variables.
local variable = token(l.VARIABLE, S('%$@') * l.word)
M._rules = {
{'whitespace', ws},
{'comment', comment},
{'string', string},
{'keyword', keyword},
{'identifier', identifier},
{'variable', variable},
}
return M
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