vbscript.lua (1736B)
- -- Copyright 2006-2017 Mitchell mitchell.att.foicica.com. See LICENSE.
- -- VisualBasic 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 = 'vbscript'}
- -- Whitespace.
- local ws = token(l.WHITESPACE, l.space^1)
- -- Comments.
- local comment = token(l.COMMENT, (P("'") + word_match({'rem'}, nil, true)) * l.nonnewline^0)
- -- Strings.
- local string = token(l.STRING, l.range('"', true, true))
- -- Numbers.
- local number = token(l.NUMBER, (l.float + l.integer) * S('LlUuFf')^-2)
- -- Keywords.
- local keyword = token(l.KEYWORD, word_match({
- -- Control.
- 'If', 'Then', 'Else', 'ElseIf', 'While', 'Wend', 'For', 'To', 'Each',
- 'In', 'Step', 'Case', 'Select', 'Return', 'Continue', 'Do',
- 'Until', 'Loop', 'Next', 'With', 'Exit',
- -- Operators.
- 'Mod', 'And', 'Not', 'Or', 'Xor', 'Is',
- -- Storage types.
- 'Call', 'Class', 'Const', 'Dim', 'ReDim', 'Preserve', 'Function', 'Sub',
- 'Property', 'End', 'Set', 'Let', 'Get', 'New', 'Randomize', 'Option',
- 'Explicit', 'On', 'Error', 'Execute',
- -- Storage modifiers.
- 'Private', 'Public', 'Default',
- -- Constants.
- 'Empty', 'False', 'Nothing', 'Null', 'True'
- }, nil, true))
- -- Types.
- local type = token(l.TYPE, word_match({
- 'Boolean', 'Byte', 'Char', 'Date', 'Decimal', 'Double', 'Long', 'Object',
- 'Short', 'Single', 'String'
- }, nil, true))
- -- Identifiers.
- local identifier = token(l.IDENTIFIER, l.word)
- -- Operators.
- local operator = token(l.OPERATOR, S('=><+-*^&:.,_()'))
- M._rules = {
- {'whitespace', ws},
- {'keyword', keyword},
- {'type', type},
- {'comment', comment},
- {'identifier', identifier},
- {'string', string},
- {'number', number},
- {'operator', operator},
- }
- return M