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-- Copyright 2015-2019 Mitchell mitchell.att.foicica.com. See License.txt.
-- PowerShell LPeg lexer.
-- Contributed by Jeff Stone.
local lexer = require('lexer')
local token, word_match = lexer.token, lexer.word_match
local P, R, S = lpeg.P, lpeg.R, lpeg.S
local lex = lexer.new('powershell')
-- Whitespace.
lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1))
-- Comments.
lex:add_rule('comment', token(lexer.COMMENT, '#' * lexer.nonnewline^0))
-- Keywords.
lex:add_rule('keyword', token(lexer.KEYWORD, word_match([[
Begin Break Continue Do Else End Exit For ForEach ForEach-Object Get-Date
Get-Random If Param Pause Powershell Process Read-Host Return Switch While
Write-Host
]], true)))
-- Comparison Operators.
lex:add_rule('comparison', token(lexer.KEYWORD, '-' * word_match([[
and as band bor contains eq ge gt is isnot le like lt match ne nomatch not
notcontains notlike or replace
]], true)))
-- Parameters.
lex:add_rule('parameter', token(lexer.KEYWORD, '-' * word_match([[
Confirm Debug ErrorAction ErrorVariable OutBuffer OutVariable Verbose WhatIf
]], true)))
-- Properties.
lex:add_rule('property', token(lexer.KEYWORD, '.' * word_match([[
day dayofweek dayofyear hour millisecond minute month second timeofday year
]], true)))
-- Types.
lex:add_rule('type', token(lexer.KEYWORD, '[' * word_match([[
array boolean byte char datetime decimal double hashtable int long single
string xml
]], true) * ']'))
-- Variables.
lex:add_rule('variable', token(lexer.VARIABLE,
'$' * (lexer.digit^1 + lexer.word +
lexer.delimited_range('{}', true, true))))
-- Strings.
lex:add_rule('string', token(lexer.STRING, lexer.delimited_range('"', true)))
-- Numbers.
lex:add_rule('number', token(lexer.NUMBER, lexer.float + lexer.integer))
-- Operators.
lex:add_rule('operator', token(lexer.OPERATOR, S('=!<>+-/*^&|~.,:;?()[]{}%`')))
-- Fold points.
lex:add_fold_point(lexer.OPERATOR, '{', '}')
return lex
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