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, 115 deletions

diff --git a/lexers/chuck.lua b/lexers/chuck.lua
deleted file mode 100644
index 3efe704..0000000
--- a/lexers/chuck.lua
+++ /dev/null
@@ -1,115 +0,0 @@
---------------------------------------------------------------------------------
--- The MIT License
---
--- Copyright (c) 2010 Martin Morawetz
---
--- Permission is hereby granted, free of charge, to any person obtaining a copy
--- of this software and associated documentation files (the "Software"), to deal
--- in the Software without restriction, including without limitation the rights
--- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
--- copies of the Software, and to permit persons to whom the Software is
--- furnished to do so, subject to the following conditions:
---
--- The above copyright notice and this permission notice shall be included in
--- all copies or substantial portions of the Software.
---
--- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
--- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
--- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
--- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
--- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
--- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
--- THE SOFTWARE.
---------------------------------------------------------------------------------
-
--- Based on lexer code from Mitchell mitchell.att.foicica.com.
-
-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 = 'chuck'}
-
--- 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 = P('L')^-1 * l.delimited_range("'", true)
-local dq_str = P('L')^-1 * l.delimited_range('"', true)
-local string = token(l.STRING, sq_str + dq_str)
-
--- Numbers.
-local number = token(l.NUMBER, l.float + l.integer)
-
--- Constants.
-local constant = token(l.CONSTANT, word_match{
-  -- special values
-  'false', 'maybe', 'me', 'null', 'NULL', 'pi', 'true'
-})
-
--- Special special value.
-local now = token('now', P('now'))
-
--- Times.
-local time = token('time', word_match{
-  'samp', 'ms', 'second', 'minute', 'hour', 'day', 'week'
-})
-
--- Keywords.
-local keyword = token(l.KEYWORD, word_match{
-  -- Control structures.
-  'break', 'continue', 'else', 'for', 'if', 'repeat', 'return', 'switch',
-  'until', 'while',
-  -- Other chuck keywords.
-  'function', 'fun', 'spork', 'const', 'new'
-})
-
--- Classes.
-local class = token(l.CLASS, word_match{
-  -- Class keywords.
-  'class', 'extends', 'implements', 'interface', 'private', 'protected',
-  'public', 'pure', 'super', 'static', 'this'
-})
-
--- Types.
-local types = token(l.TYPE, word_match{
-  'float', 'int', 'time', 'dur', 'void', 'same'
-})
-
--- Global ugens.
-local ugen = token('ugen', word_match{'dac', 'adc', 'blackhole'})
-
--- Identifiers.
-local identifier = token(l.IDENTIFIER, l.word)
-
--- Operators.
-local operator = token(l.OPERATOR, S('+-/*%<>!=^&|?~:;.()[]{}@'))
-
-M._rules = {
-  {'whitespace', ws},
-  {'string', string},
-  {'keyword', keyword},
-  {'constant', constant},
-  {'type', types},
-  {'class', class},
-  {'ugen', ugen},
-  {'time', time},
-  {'now', now},
-  {'identifier', identifier},
-  {'comment', comment},
-  {'number', number},
-  {'operator', operator},
-}
-
-M._tokenstyles = {
-  ugen = l.STYLE_CONSTANT,
-  time = l.STYLE_NUMBER,
-  now = l.STYLE_CONSTANT..',bold'
-}
-
-return M