-- Copyright 2015-2018 Mitchell mitchell.att.foicica.com. See License.txt.
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-- PowerShell LPeg lexer.
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-- Contributed by Jeff Stone.
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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('powershell')
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-- Whitespace.
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lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1))
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-- Comments.
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lex:add_rule('comment', token(lexer.COMMENT, '#' * lexer.nonnewline^0))
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-- Keywords.
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lex:add_rule('keyword', token(lexer.KEYWORD, word_match([[
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Begin Break Continue Do Else End Exit For ForEach ForEach-Object Get-Date
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Get-Random If Param Pause Powershell Process Read-Host Return Switch While
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Write-Host
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]], true)))
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-- Comparison Operators.
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lex:add_rule('comparison', token(lexer.KEYWORD, '-' * word_match([[
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and as band bor contains eq ge gt is isnot le like lt match ne nomatch not
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notcontains notlike or replace
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]], true)))
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-- Parameters.
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lex:add_rule('parameter', token(lexer.KEYWORD, '-' * word_match([[
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Confirm Debug ErrorAction ErrorVariable OutBuffer OutVariable Verbose WhatIf
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]], true)))
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-- Properties.
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lex:add_rule('property', token(lexer.KEYWORD, '.' * word_match([[
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day dayofweek dayofyear hour millisecond minute month second timeofday year
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]], true)))
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-- Types.
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lex:add_rule('type', token(lexer.KEYWORD, '[' * word_match([[
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array boolean byte char datetime decimal double hashtable int long single
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string xml
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]], true) * ']'))
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-- Variables.
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lex:add_rule('variable', token(lexer.VARIABLE,
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'$' * (lexer.digit^1 + lexer.word +
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lexer.delimited_range('{}', true, true))))
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-- Strings.
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lex:add_rule('string', token(lexer.STRING, lexer.delimited_range('"', true)))
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-- Numbers.
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lex:add_rule('number', token(lexer.NUMBER, lexer.float + lexer.integer))
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-- Operators.
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lex:add_rule('operator', token(lexer.OPERATOR, S('=!<>+-/*^&|~.,:;?()[]{}%`')))
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-- Fold points.
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lex:add_fold_point(lexer.OPERATOR, '{', '}')
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return lex
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