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, 0 insertions, 176 deletions

diff --git a/lexers/dmd.lua b/lexers/dmd.lua
deleted file mode 100644
index f73763a..0000000
--- a/lexers/dmd.lua
+++ /dev/null
@@ -1,176 +0,0 @@
--- Copyright 2006-2016 Mitchell mitchell.att.foicica.com. See LICENSE.
--- D LPeg lexer.
--- Heavily modified by Brian Schott (@Hackerpilot on Github).
-
-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 = 'dmd'}
-
--- Whitespace.
-local ws = token(l.WHITESPACE, l.space^1)
-
--- Comments.
-local line_comment = '//' * l.nonnewline_esc^0
-local block_comment = '/*' * (l.any - '*/')^0 * P('*/')^-1
-local nested_comment = l.nested_pair('/+', '+/')
-local comment = token(l.COMMENT, line_comment + block_comment + nested_comment)
-
--- Strings.
-local sq_str = l.delimited_range("'", true) * S('cwd')^-1
-local dq_str = l.delimited_range('"') * S('cwd')^-1
-local lit_str = 'r' * l.delimited_range('"', false, true) * S('cwd')^-1
-local bt_str = l.delimited_range('`', false, true) * S('cwd')^-1
-local hex_str = 'x' * l.delimited_range('"') * S('cwd')^-1
-local other_hex_str = '\\x' * (l.xdigit * l.xdigit)^1
-local del_str = l.nested_pair('q"[', ']"') * S('cwd')^-1 +
-                l.nested_pair('q"(', ')"') * S('cwd')^-1 +
-                l.nested_pair('q"{', '}"') * S('cwd')^-1 +
-                l.nested_pair('q"<', '>"') * S('cwd')^-1 +
-                P('q') * l.nested_pair('{', '}') * S('cwd')^-1
-local string = token(l.STRING, del_str + sq_str + dq_str + lit_str + bt_str +
-                               hex_str + other_hex_str)
-
--- Numbers.
-local dec = l.digit^1 * ('_' * l.digit^1)^0
-local hex_num = l.hex_num * ('_' * l.xdigit^1)^0
-local bin_num = '0' * S('bB') * S('01_')^1
-local oct_num = '0' * S('01234567_')^1
-local integer = S('+-')^-1 * (hex_num + oct_num + bin_num + dec)
-local number = token(l.NUMBER, (l.float + integer) * S('uUlLdDfFi')^-1)
-
--- Keywords.
-local keyword = token(l.KEYWORD, word_match{
-  'abstract', 'align', 'asm', 'assert', 'auto', 'body', 'break', 'case', 'cast',
-  'catch', 'const', 'continue', 'debug', 'default', 'delete',
-  'deprecated', 'do', 'else', 'extern', 'export', 'false', 'final', 'finally',
-  'for', 'foreach', 'foreach_reverse', 'goto', 'if', 'import', 'immutable',
-  'in', 'inout', 'invariant', 'is', 'lazy', 'macro', 'mixin', 'new', 'nothrow',
-  'null', 'out', 'override', 'pragma', 'private', 'protected', 'public', 'pure',
-  'ref', 'return', 'scope', 'shared', 'static', 'super', 'switch',
-  'synchronized', 'this', 'throw','true', 'try', 'typeid', 'typeof', 'unittest',
-  'version', 'virtual', 'volatile', 'while', 'with', '__gshared', '__thread',
-  '__traits', '__vector', '__parameters'
-})
-
--- Types.
-local type = token(l.TYPE, word_match{
-  'alias', 'bool', 'byte', 'cdouble', 'cent', 'cfloat', 'char', 'class',
-  'creal', 'dchar', 'delegate', 'double', 'enum', 'float', 'function',
-  'idouble', 'ifloat', 'int', 'interface', 'ireal', 'long', 'module', 'package',
-  'ptrdiff_t', 'real', 'short', 'size_t', 'struct', 'template', 'typedef',
-  'ubyte', 'ucent', 'uint', 'ulong', 'union', 'ushort', 'void', 'wchar',
-  'string', 'wstring', 'dstring', 'hash_t', 'equals_t'
-})
-
--- Constants.
-local constant = token(l.CONSTANT, word_match{
-  '__FILE__', '__LINE__', '__DATE__', '__EOF__', '__TIME__', '__TIMESTAMP__',
-  '__VENDOR__', '__VERSION__', '__FUNCTION__', '__PRETTY_FUNCTION__',
-  '__MODULE__',
-})
-
-local class_sequence = token(l.TYPE, P('class') + P('struct')) * ws^1 *
-                                     token(l.CLASS, l.word)
-
--- Identifiers.
-local identifier = token(l.IDENTIFIER, l.word)
-
--- Operators.
-local operator = token(l.OPERATOR, S('?=!<>+-*$/%&|^~.,;()[]{}'))
-
--- Properties.
-local properties = (type + identifier + operator) * token(l.OPERATOR, '.') *
-  token(l.VARIABLE, word_match{
-    'alignof', 'dig', 'dup', 'epsilon', 'idup', 'im', 'init', 'infinity',
-    'keys', 'length', 'mangleof', 'mant_dig', 'max', 'max_10_exp', 'max_exp',
-    'min', 'min_normal', 'min_10_exp', 'min_exp', 'nan', 'offsetof', 'ptr',
-    're', 'rehash', 'reverse', 'sizeof', 'sort', 'stringof', 'tupleof',
-    'values'
-  })
-
--- Preprocs.
-local annotation = token('annotation', '@' * l.word^1)
-local preproc = token(l.PREPROCESSOR, '#' * l.nonnewline^0)
-
--- Traits.
-local traits_list = token('traits', word_match{
-  'allMembers', 'classInstanceSize', 'compiles', 'derivedMembers',
-  'getAttributes', 'getMember', 'getOverloads', 'getProtection', 'getUnitTests',
-  'getVirtualFunctions', 'getVirtualIndex', 'getVirtualMethods', 'hasMember',
-  'identifier', 'isAbstractClass', 'isAbstractFunction', 'isArithmetic',
-  'isAssociativeArray', 'isFinalClass', 'isFinalFunction', 'isFloating',
-  'isIntegral', 'isLazy', 'isNested', 'isOut', 'isOverrideFunction', 'isPOD',
-  'isRef', 'isSame', 'isScalar', 'isStaticArray', 'isStaticFunction',
-  'isUnsigned', 'isVirtualFunction', 'isVirtualMethod', 'parent'
-})
-
-local scopes_list = token('scopes', word_match{'exit', 'success', 'failure'})
-
--- versions
-local versions_list = token('versions', word_match{
-  'AArch64', 'AIX', 'all', 'Alpha', 'Alpha_HardFloat', 'Alpha_SoftFloat',
-  'Android', 'ARM', 'ARM_HardFloat', 'ARM_SoftFloat', 'ARM_SoftFP', 'ARM_Thumb',
-  'assert', 'BigEndian', 'BSD', 'Cygwin', 'D_Coverage', 'D_Ddoc', 'D_HardFloat',
-  'DigitalMars', 'D_InlineAsm_X86', 'D_InlineAsm_X86_64', 'D_LP64',
-  'D_NoBoundsChecks', 'D_PIC', 'DragonFlyBSD', 'D_SIMD', 'D_SoftFloat',
-  'D_Version2', 'D_X32', 'FreeBSD', 'GNU', 'Haiku', 'HPPA', 'HPPA64', 'Hurd',
-  'IA64', 'LDC', 'linux', 'LittleEndian', 'MIPS32', 'MIPS64', 'MIPS_EABI',
-  'MIPS_HardFloat', 'MIPS_N32', 'MIPS_N64', 'MIPS_O32', 'MIPS_O64',
-  'MIPS_SoftFloat', 'NetBSD', 'none', 'OpenBSD', 'OSX', 'Posix', 'PPC', 'PPC64',
-  'PPC_HardFloat', 'PPC_SoftFloat', 'S390', 'S390X', 'SDC', 'SH', 'SH64',
-  'SkyOS', 'Solaris', 'SPARC', 'SPARC64', 'SPARC_HardFloat', 'SPARC_SoftFloat',
-  'SPARC_V8Plus', 'SysV3', 'SysV4', 'unittest', 'Win32', 'Win64', 'Windows',
-  'X86', 'X86_64'
-})
-
-local versions = token(l.KEYWORD, 'version') * l.space^0 *
-                 token(l.OPERATOR, '(') * l.space^0 * versions_list
-
-local scopes = token(l.KEYWORD, 'scope') * l.space^0 *
-               token(l.OPERATOR, '(') * l.space^0 * scopes_list
-
-local traits = token(l.KEYWORD, '__traits') * l.space^0 *
-               token(l.OPERATOR, '(') * l.space^0 * traits_list
-
-local func = token(l.FUNCTION, l.word) *
-             #(l.space^0 * (P('!') * l.word^-1 * l.space^-1)^-1 * P('('))
-
-M._rules = {
-  {'whitespace', ws},
-  {'class', class_sequence},
-  {'traits', traits},
-  {'versions', versions},
-  {'scopes', scopes},
-  {'keyword', keyword},
-  {'variable', properties},
-  {'type', type},
-  {'function', func},
-  {'constant', constant},
-  {'string', string},
-  {'identifier', identifier},
-  {'comment', comment},
-  {'number', number},
-  {'preproc', preproc},
-  {'operator', operator},
-  {'annotation', annotation},
-}
-
-M._tokenstyles = {
-  annotation = l.STYLE_PREPROCESSOR,
-  traits = l.STYLE_CLASS,
-  versions = l.STYLE_CONSTANT,
-  scopes = l.STYLE_CONSTANT
-}
-
-M._foldsymbols = {
-  _patterns = {'[{}]', '/[*+]', '[*+]/', '//'},
-  [l.OPERATOR] = {['{'] = 1, ['}'] = -1},
-  [l.COMMENT] = {
-    ['/*'] = 1, ['*/'] = -1, ['/+'] = 1, ['+/'] = -1,
-    ['//'] = l.fold_line_comments('//')
-  }
-}
-
-return M