57 lines
1.7 KiB
Lua
Executable File
57 lines
1.7 KiB
Lua
Executable File
-- Copyright 2006-2019 Mitchell mitchell.att.foicica.com. See License.txt.
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-- Desktop Entry LPeg lexer.
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local lexer = require('lexer')
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local token, word_match = lexer.token, lexer.word_match
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local P, R, S = lpeg.P, lpeg.R, lpeg.S
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local lex = lexer.new('desktop')
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-- Whitespace.
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lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1))
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-- Keys.
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lex:add_rule('key', token('key', word_match[[
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Type Version Name GenericName NoDisplay Comment Icon Hidden OnlyShowIn
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NotShowIn TryExec Exec Exec Path Terminal MimeType Categories StartupNotify
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StartupWMClass URL
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]]))
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lex:add_style('key', lexer.STYLE_KEYWORD)
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-- Values.
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lex:add_rule('value', token('value', word_match[[true false]]))
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lex:add_style('value', lexer.STYLE_CONSTANT)
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-- Identifiers.
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lex:add_rule('identifier', lexer.token(lexer.IDENTIFIER,
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lexer.alpha * (lexer.alnum + S('_-'))^0))
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-- Group headers.
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lex:add_rule('header',
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lexer.starts_line(token('header',
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lexer.delimited_range('[]', false, true))))
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lex:add_style('header', lexer.STYLE_LABEL)
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-- Locales.
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lex:add_rule('locale', token('locale',
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lexer.delimited_range('[]', false, true)))
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lex:add_style('locale', lexer.STYLE_CLASS)
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-- Strings.
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lex:add_rule('string', token(lexer.STRING, lexer.delimited_range('"')))
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-- Comments.
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lex:add_rule('comment', token(lexer.COMMENT, '#' * lexer.nonnewline^0))
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-- Numbers.
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lex:add_rule('number', token(lexer.NUMBER, (lexer.float + lexer.integer)))
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-- Field codes.
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lex:add_rule('code', lexer.token('code', P('%') * S('fFuUdDnNickvm')))
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lex:add_style('code', lexer.STYLE_VARIABLE)
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-- Operators.
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lex:add_rule('operator', token(lexer.OPERATOR, S('=')))
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return lex
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