Move all lua related files to lua/ subfolder

Also remove the lexers sub directory from the Lua search path.
As a result we attempt to open fewer files during startup:

 $ strace -e open -o log ./vis +q config.h && wc -l log

In order to avoid having to modifiy all lexers which `require('lexer')`
we instead place a symlink in the top level directory.

 $ ./configure --disable-lua
 $ rm -rf lua

Should result in a source tree with most lua specifc functionality
removed.

1 files changed, 168 insertions, 0 deletions

diff --git a/lua/lexers/autoit.lua b/lua/lexers/autoit.lua
new file mode 100644
index 0000000..1a3bc55
--- /dev/null
+++ b/lua/lexers/autoit.lua
@@ -0,0 +1,168 @@
+-- Copyright 2006-2016 Mitchell mitchell.att.foicica.com. See LICENSE.
+-- AutoIt LPeg lexer.
+-- Contributed by Jeff Stone.
+
+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 = 'autoit'}
+
+-- Whitespace.
+local ws = token(l.WHITESPACE, l.space^1)
+
+-- Comments.
+local line_comment = ';' * l.nonnewline_esc^0
+local block_comment1 = '#comments-start' * (l.any - '#comments-end')^0 *
+                       P('#comments-end')^-1
+local block_comment2 = '#cs' * (l.any - '#ce')^0 * P('#ce')^-1
+local comment = token(l.COMMENT, line_comment + block_comment1 + block_comment2)
+
+-- Keywords.
+local kw = token(l.KEYWORD, word_match({
+  'False', 'True', 'And', 'Or', 'Not', 'ContinueCase', 'ContinueLoop',
+  'Default', 'Dim', 'Global', 'Local', 'Const', 'Do', 'Until', 'Enum', 'Exit',
+  'ExitLoop', 'For', 'To', 'Step', 'Next', 'In', 'Func', 'Return', 'EndFunc',
+  'If', 'Then', 'ElseIf', 'Else', 'EndIf', 'Null', 'ReDim', 'Select', 'Case',
+  'EndSelect', 'Static', 'Switch', 'EndSwitch', 'Volatile', 'While', 'WEnd',
+  'With', 'EndWith'
+}, nil, true))
+
+-- Functions.
+local func = token(l.FUNCTION, word_match({
+  'Abs', 'ACos', 'AdlibRegister', 'AdlibUnRegister', 'Asc', 'AscW', 'ASin',
+  'Assign', 'ATan', 'AutoItSetOption', 'AutoItWinGetTitle', 'AutoItWinSetTitle',
+  'Beep', 'Binary', 'BinaryLen', 'BinaryMid', 'BinaryToString', 'BitAND',
+  'BitNOT', 'BitOR', 'BitRotate', 'BitShift', 'BitXOR', 'BlockInput', 'Break',
+  'Call', 'CDTray', 'Ceiling', 'Chr', 'ChrW', 'ClipGet', 'ClipPut',
+  'ConsoleRead', 'ConsoleWrite', 'ConsoleWriteError', 'ControlClick',
+  'ControlCommand', 'ControlDisable', 'ControlEnable', 'ControlFocus',
+  'ControlGetFocus', 'ControlGetHandle', 'ControlGetPos', 'ControlGetText',
+  'ControlHide', 'ControlListView', 'ControlMove', 'ControlSend',
+  'ControlSetText', 'ControlShow', 'ControlTreeView', 'Cos', 'Dec', 'DirCopy',
+  'DirCreate', 'DirGetSize', 'DirMove', 'DirRemove', 'DllCall',
+  'DllCallAddress', 'DllCallbackFree', 'DllCallbackGetPtr',
+  'DllCallbackRegister', 'DllClose', 'DllOpen', 'DllStructCreate',
+  'DllStructGetData', 'DllStructGetPtr', 'DllStructGetSize', 'DllStructSetData',
+  'DriveGetDrive', 'DriveGetFileSystem', 'DriveGetLabel', 'DriveGetSerial',
+  'DriveGetType', 'DriveMapAdd', 'DriveMapDel', 'DriveMapGet', 'DriveSetLabel',
+  'DriveSpaceFree', 'DriveSpaceTotal', 'DriveStatus', 'EnvGet', 'EnvSet',
+  'EnvUpdate', 'Eval', 'Execute', 'Exp', 'FileChangeDir', 'FileClose',
+  'FileCopy', 'FileCreateNTFSLink', 'FileCreateShortcut', 'FileDelete',
+  'FileExists', 'FileFindFirstFile', 'FileFindNextFile', 'FileFlush',
+  'FileGetAttrib', 'FileGetEncoding', 'FileGetLongName', 'FileGetPos',
+  'FileGetShortcut', 'FileGetShortName', 'FileGetSize', 'FileGetTime',
+  'FileGetVersion', 'FileInstall', 'FileMove', 'FileOpen', 'FileOpenDialog',
+  'FileRead', 'FileReadLine', 'FileReadToArray', 'FileRecycle',
+  'FileRecycleEmpty', 'FileSaveDialog', 'FileSelectFolder', 'FileSetAttrib',
+  'FileSetEnd', 'FileSetPos', 'FileSetTime', 'FileWrite', 'FileWriteLine',
+  'Floor', 'FtpSetProxy', 'FuncName', 'GUICreate', 'GUICtrlCreateAvi',
+  'GUICtrlCreateButton', 'GUICtrlCreateCheckbox', 'GUICtrlCreateCombo',
+  'GUICtrlCreateContextMenu', 'GUICtrlCreateDate', 'GUICtrlCreateDummy',
+  'GUICtrlCreateEdit', 'GUICtrlCreateGraphic', 'GUICtrlCreateGroup',
+  'GUICtrlCreateIcon', 'GUICtrlCreateInput', 'GUICtrlCreateLabel',
+  'GUICtrlCreateList', 'GUICtrlCreateListView', 'GUICtrlCreateListViewItem',
+  'GUICtrlCreateMenu', 'GUICtrlCreateMenuItem', 'GUICtrlCreateMonthCal',
+  'GUICtrlCreateObj', 'GUICtrlCreatePic', 'GUICtrlCreateProgress',
+  'GUICtrlCreateRadio', 'GUICtrlCreateSlider', 'GUICtrlCreateTab',
+  'GUICtrlCreateTabItem', 'GUICtrlCreateTreeView', 'GUICtrlCreateTreeViewItem',
+  'GUICtrlCreateUpdown', 'GUICtrlDelete', 'GUICtrlGetHandle', 'GUICtrlGetState',
+  'GUICtrlRead', 'GUICtrlRecvMsg', 'GUICtrlRegisterListViewSort',
+  'GUICtrlSendMsg', 'GUICtrlSendToDummy', 'GUICtrlSetBkColor',
+  'GUICtrlSetColor', 'GUICtrlSetCursor', 'GUICtrlSetData',
+  'GUICtrlSetDefBkColor', 'GUICtrlSetDefColor', 'GUICtrlSetFont',
+  'GUICtrlSetGraphic', 'GUICtrlSetImage', 'GUICtrlSetLimit',
+  'GUICtrlSetOnEvent', 'GUICtrlSetPos', 'GUICtrlSetResizing', 'GUICtrlSetState',
+  'GUICtrlSetStyle', 'GUICtrlSetTip', 'GUIDelete', 'GUIGetCursorInfo',
+  'GUIGetMsg', 'GUIGetStyle', 'GUIRegisterMsg', 'GUISetAccelerators',
+  'GUISetBkColor', 'GUISetCoord', 'GUISetCursor', 'GUISetFont', 'GUISetHelp',
+  'GUISetIcon', 'GUISetOnEvent', 'GUISetState', 'GUISetStyle', 'GUIStartGroup',
+  'GUISwitch', 'Hex', 'HotKeySet', 'HttpSetProxy', 'HttpSetUserAgent', 'HWnd',
+  'InetClose', 'InetGet', 'InetGetInfo', 'InetGetSize', 'InetRead', 'IniDelete',
+  'IniRead', 'IniReadSection', 'IniReadSectionNames', 'IniRenameSection',
+  'IniWrite', 'IniWriteSection', 'InputBox', 'Int', 'IsAdmin', 'IsArray',
+  'IsBinary', 'IsBool', 'IsDeclared', 'IsDllStruct', 'IsFloat', 'IsFunc',
+  'IsHWnd', 'IsInt', 'IsKeyword', 'IsNumber', 'IsObj', 'IsPtr', 'IsString',
+  'Log', 'MemGetStats', 'Mod', 'MouseClick', 'MouseClickDrag', 'MouseDown',
+  'MouseGetCursor', 'MouseGetPos', 'MouseMove', 'MouseUp', 'MouseWheel',
+  'MsgBox', 'Number', 'ObjCreate', 'ObjCreateInterface', 'ObjEvent', 'ObjGet',
+  'ObjName', 'OnAutoItExitRegister', 'OnAutoItExitUnRegister', 'Ping',
+  'PixelChecksum', 'PixelGetColor', 'PixelSearch', 'ProcessClose',
+  'ProcessExists', 'ProcessGetStats', 'ProcessList', 'ProcessSetPriority',
+  'ProcessWait', 'ProcessWaitClose', 'ProgressOff', 'ProgressOn', 'ProgressSet',
+  'Ptr', 'Random', 'RegDelete', 'RegEnumKey', 'RegEnumVal', 'RegRead',
+  'RegWrite', 'Round', 'Run', 'RunAs', 'RunAsWait', 'RunWait', 'Send',
+  'SendKeepActive', 'SetError', 'SetExtended', 'ShellExecute',
+  'ShellExecuteWait', 'Shutdown', 'Sin', 'Sleep', 'SoundPlay',
+  'SoundSetWaveVolume', 'SplashImageOn', 'SplashOff', 'SplashTextOn', 'Sqrt',
+  'SRandom', 'StatusbarGetText', 'StderrRead', 'StdinWrite', 'StdioClose',
+  'StdoutRead', 'String', 'StringAddCR', 'StringCompare', 'StringFormat',
+  'StringFromASCIIArray', 'StringInStr', 'StringIsAlNum', 'StringIsAlpha',
+  'StringIsASCII', 'StringIsDigit', 'StringIsFloat', 'StringIsInt',
+  'StringIsLower', 'StringIsSpace', 'StringIsUpper', 'StringIsXDigit',
+  'StringLeft', 'StringLen', 'StringLower', 'StringMid', 'StringRegExp',
+  'StringRegExpReplace', 'StringReplace', 'StringReverse', 'StringRight',
+  'StringSplit', 'StringStripCR', 'StringStripWS', 'StringToASCIIArray',
+  'StringToBinary', 'StringTrimLeft', 'StringTrimRight', 'StringUpper', 'Tan',
+  'TCPAccept', 'TCPCloseSocket', 'TCPConnect', 'TCPListen', 'TCPNameToIP',
+  'TCPRecv', 'TCPSend', 'TCPShutdown, UDPShutdown', 'TCPStartup, UDPStartup',
+  'TimerDiff', 'TimerInit', 'ToolTip', 'TrayCreateItem', 'TrayCreateMenu',
+  'TrayGetMsg', 'TrayItemDelete', 'TrayItemGetHandle', 'TrayItemGetState',
+  'TrayItemGetText', 'TrayItemSetOnEvent', 'TrayItemSetState',
+  'TrayItemSetText', 'TraySetClick', 'TraySetIcon', 'TraySetOnEvent',
+  'TraySetPauseIcon', 'TraySetState', 'TraySetToolTip', 'TrayTip', 'UBound',
+  'UDPBind', 'UDPCloseSocket', 'UDPOpen', 'UDPRecv', 'UDPSend', 'VarGetType',
+  'WinActivate', 'WinActive', 'WinClose', 'WinExists', 'WinFlash',
+  'WinGetCaretPos', 'WinGetClassList', 'WinGetClientSize', 'WinGetHandle',
+  'WinGetPos', 'WinGetProcess', 'WinGetState', 'WinGetText', 'WinGetTitle',
+  'WinKill', 'WinList', 'WinMenuSelectItem', 'WinMinimizeAll',
+  'WinMinimizeAllUndo', 'WinMove', 'WinSetOnTop', 'WinSetState', 'WinSetTitle',
+  'WinSetTrans', 'WinWait', 'WinWaitActive', 'WinWaitClose', 'WinWaitNotActive'
+}, nil, true))
+
+-- Preprocessor.
+local preproc = token(l.PREPROCESSOR, '#' * word_match({
+  'include-once', 'include', 'pragma', 'forceref', 'RequireAdmin', 'NoTrayIcon',
+  'OnAutoItStartRegister'
+}, '-', true))
+
+-- Strings.
+local dq_str = l.delimited_range('"', true, true)
+local sq_str = l.delimited_range("'", true, true)
+local inc = l.delimited_range('<>', true, true, true)
+local str = token(l.STRING, dq_str + sq_str + inc)
+
+-- Macros.
+local macro = token('macro', '@' * (l.alnum + '_')^1)
+
+-- Variables.
+local var = token(l.VARIABLE, '$' * (l.alnum + '_')^1)
+
+-- Identifiers.
+local ident = token(l.IDENTIFIER, (l.alnum + '_')^1)
+
+-- Numbers.
+local nbr = token(l.NUMBER, l.float + l.integer)
+
+-- Operators.
+local oper = token(l.OPERATOR, S('+-^*/&<>=?:()[]'))
+
+M._rules = {
+  {'whitespace', ws},
+  {'comment', comment},
+  {'keyword', kw},
+  {'function', func},
+  {'preproc', preproc},
+  {'string', str},
+  {'macro', macro},
+  {'variable', var},
+  {'number', nbr},
+  {'identifier', ident},
+  {'operator', oper}
+}
+
+M._tokenstyles = {
+  macro = l.STYLE_PREPROCESSOR
+}
+
+return M