-- Copyright 2006-2015 Mitchell mitchell.att.foicica.com. See LICENSE. -- Batch 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 = 'batch'} -- Whitespace. local ws = token(l.WHITESPACE, l.space^1) -- Comments. local rem = (P('REM') + 'rem') * l.space local comment = token(l.COMMENT, (rem + '::') * l.nonnewline^0) -- Strings. local string = token(l.STRING, l.delimited_range('"', true)) -- Keywords. local keyword = token(l.KEYWORD, word_match({ 'cd', 'chdir', 'md', 'mkdir', 'cls', 'for', 'if', 'echo', 'echo.', 'move', 'copy', 'ren', 'del', 'set', 'call', 'exit', 'setlocal', 'shift', 'endlocal', 'pause', 'defined', 'exist', 'errorlevel', 'else', 'in', 'do', 'NUL', 'AUX', 'PRN', 'not', 'goto', 'pushd', 'popd' }, nil, true)) -- Functions. local func = token(l.FUNCTION, word_match({ 'APPEND', 'ATTRIB', 'CHKDSK', 'CHOICE', 'DEBUG', 'DEFRAG', 'DELTREE', 'DISKCOMP', 'DISKCOPY', 'DOSKEY', 'DRVSPACE', 'EMM386', 'EXPAND', 'FASTOPEN', 'FC', 'FDISK', 'FIND', 'FORMAT', 'GRAPHICS', 'KEYB', 'LABEL', 'LOADFIX', 'MEM', 'MODE', 'MORE', 'MOVE', 'MSCDEX', 'NLSFUNC', 'POWER', 'PRINT', 'RD', 'REPLACE', 'RESTORE', 'SETVER', 'SHARE', 'SORT', 'SUBST', 'SYS', 'TREE', 'UNDELETE', 'UNFORMAT', 'VSAFE', 'XCOPY' }, nil, true)) -- Identifiers. local identifier = token(l.IDENTIFIER, l.word) -- Variables. local variable = token(l.VARIABLE, '%' * (l.digit + '%' * l.alpha) + l.delimited_range('%', true, true)) -- Operators. local operator = token(l.OPERATOR, S('+|&!<>=')) -- Labels. local label = token(l.LABEL, ':' * l.word) M._rules = { {'whitespace', ws}, {'keyword', keyword}, {'function', func}, {'comment', comment}, {'identifier', identifier}, {'string', string}, {'variable', variable}, {'label', label}, {'operator', operator}, } M._LEXBYLINE = true M._foldsymbols = { _patterns = {'[A-Za-z]+'}, [l.KEYWORD] = {setlocal = 1, endlocal = -1, SETLOCAL = 1, ENDLOCAL = -1} } return M