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, 81 deletions

diff --git a/lexers/boo.lua b/lexers/boo.lua
deleted file mode 100644
index aadacc4..0000000
--- a/lexers/boo.lua
+++ /dev/null
@@ -1,81 +0,0 @@
--- Copyright 2006-2016 Mitchell mitchell.att.foicica.com. See LICENSE.
--- Boo 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 = 'boo'}
-
--- 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 comment = token(l.COMMENT, line_comment + block_comment)
-
--- Strings.
-local sq_str = l.delimited_range("'", true)
-local dq_str = l.delimited_range('"', true)
-local triple_dq_str = '"""' * (l.any - '"""')^0 * P('"""')^-1
-local regex_str = #('/') * l.last_char_includes('!%^&*([{-=+|:;,?<>~') *
-                  l.delimited_range('/', true)
-local string = token(l.STRING, triple_dq_str + sq_str + dq_str) +
-               token(l.REGEX, regex_str)
-
-
--- Numbers.
-local number = token(l.NUMBER, (l.float + l.integer) *
-                               (S('msdhsfFlL') + 'ms')^-1)
-
--- Keywords.
-local keyword = token(l.KEYWORD, word_match{
-  'and', 'break', 'cast', 'continue', 'elif', 'else', 'ensure', 'except', 'for',
-  'given', 'goto', 'if', 'in', 'isa', 'is', 'not', 'or', 'otherwise', 'pass',
-  'raise', 'ref', 'try', 'unless', 'when', 'while',
-  -- Definitions.
-  'abstract', 'callable', 'class', 'constructor', 'def', 'destructor', 'do',
-  'enum', 'event', 'final', 'get', 'interface', 'internal', 'of', 'override',
-  'partial', 'private', 'protected', 'public', 'return', 'set', 'static',
-  'struct', 'transient', 'virtual', 'yield',
-  -- Namespaces.
-  'as', 'from', 'import', 'namespace',
-  -- Other.
-  'self', 'super', 'null', 'true', 'false'
-})
-
--- Types.
-local type = token(l.TYPE, word_match{
-  'bool', 'byte', 'char', 'date', 'decimal', 'double', 'duck', 'float', 'int',
-  'long', 'object', 'operator', 'regex', 'sbyte', 'short', 'single', 'string',
-  'timespan', 'uint', 'ulong', 'ushort'
-})
-
--- Functions.
-local func = token(l.FUNCTION, word_match{
-  'array', 'assert', 'checked', 'enumerate', '__eval__', 'filter', 'getter',
-  'len', 'lock', 'map', 'matrix', 'max', 'min', 'normalArrayIndexing', 'print',
-  'property', 'range', 'rawArrayIndexing', 'required', '__switch__', 'typeof',
-  'unchecked', 'using', 'yieldAll', 'zip'
-})
-
--- Identifiers.
-local identifier = token(l.IDENTIFIER, l.word)
-
--- Operators.
-local operator = token(l.OPERATOR, S('!%^&*()[]{}-=+/|:;.,?<>~`'))
-
-M._rules = {
-  {'whitespace', ws},
-  {'keyword', keyword},
-  {'type', type},
-  {'function', func},
-  {'identifier', identifier},
-  {'string', string},
-  {'comment', comment},
-  {'number', number},
-  {'operator', operator},
-}
-
-return M