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|
by Chris Peterson
http://www.redmine.org/issues/show/1471
http://www.redmine.org/attachments/642/coderay_lua_lexar.patch
Index: vendor/plugins/coderay-0.7.6.227/lib/coderay/scanners/lua.rb
===================================================================
--- vendor/plugins/coderay-0.7.6.227/lib/coderay/scanners/lua.rb (revision 0)
+++ vendor/plugins/coderay-0.7.6.227/lib/coderay/scanners/lua.rb (revision 0)
@@ -0,0 +1,185 @@
+module CodeRay
+module Scanners
+
+ class Lua < Scanner
+
+ register_for :lua
+
+ include Streamable
+
+ RESERVED_WORDS = [
+ 'if', 'elseif', 'else', 'then',
+ 'end', 'do', 'while', 'true',
+ 'false', 'in', 'for', 'and', 'or',
+ 'function', 'local', 'not', 'repeat',
+ 'return', 'until', 'break',
+ ]
+
+ PREDEFINED_TYPES = [
+ 'nil', 'boolean', 'number', 'string', 'table',
+ ]
+
+ BUILTIN_LIBS = [
+ 'package', 'table', 'math', 'string', 'io', 'os', 'debug',
+ ]
+
+ BUILTIN_METHODS = [
+ 'loadlib', 'path', 'cpath',
+ 'loaded','preloaded','seeall',
+ 'coroutine', 'create','resume','yield',
+ 'status','running','wrap',
+ 'insert','remove','maxn','sort',
+ 'concat','abs','mod','floor','ceil',
+ 'min','max','sqrt','math.pow','math.log',
+ 'exp','log10','deg','math.pi','math.rad',
+ 'sin','cos','tan','asin','acos',
+ 'atan','atan2','frexp','ldexp','random',
+ 'randomseed', 'len','sub','rep','upper',
+ 'lower','byte','char','dump','format',
+ 'find','gmatch','gsub','match','open',
+ 'input','output','close','read','lines',
+ 'write','flush','stdout','stdin','stderr',
+ 'popen','type','tmpfile','execute','exit',
+ 'getenv','setlocale','remove','rename','tmpname',
+ 'clock','time','date','difftime','debug',
+ 'getinfo','getlocal','getupvalue','traceback',
+ 'setlocal','setupvalue','sethook','gethook',
+ ]
+
+ BUILTIN_FUNCTIONS = [
+ 'print', 'pairs','ipairs', 'error', 'load',
+ 'require', 'getfenv', 'setfenv', 'dofile',
+ 'loadfile', 'loadstring', 'pcall', 'xpcall',
+ 'assert', 'type', 'tostring', 'tonumber',
+ 'select', 'unpack', 'next', 'collectgarbage',
+ 'module',
+ ]
+
+ IDENT_KIND = WordList.new(:ident).
+ add(RESERVED_WORDS, :reserved).
+ add(PREDEFINED_TYPES, :pre_type).
+ add(BUILTIN_LIBS, :predefined).
+ add(BUILTIN_METHODS, :pre_type).
+ add(BUILTIN_FUNCTIONS, :preprocessor)
+
+ ESCAPE = / [rbfnrtv\n\\'"] | x[a-fA-F0-9]{1,2} | [0-7]{1,3} /x
+ UNICODE_ESCAPE = / u[a-fA-F0-9]{4} | U[a-fA-F0-9]{8} /x
+
+ def scan_tokens tokens, options
+
+ state = :initial
+
+ until eos?
+
+ kind = nil
+ match = nil
+
+ case state
+
+ when :initial
+
+ if scan(/ \s+ | \\\n /x)
+ kind = :space
+
+ elsif scan(%r! --[^\n\\]* (?: \\. [^\n\\]* )* | --\[\[ (?: .*? \]\] | .* ) !mx)
+ kind = :comment
+
+ elsif scan(/ [-+*\/=<>?:;,!&^|()\[\]{}~%]+ | \.(?!\d) /x)
+ kind = :operator
+
+ elsif match = scan(/ [#A-Za-z_][A-Za-z_0-9]* /x)
+ kind = IDENT_KIND[match]
+ if kind == :pre_type and check(/[^\.\:\(\']/)
+ kind = :ident
+ end
+
+ elsif match = scan(/L?"/)
+ tokens << [:open, :string]
+ if match[0] == ?L
+ tokens << ['L', :modifier]
+ match = '"'
+ end
+ state = :string
+ kind = :string
+
+ elsif scan(/ L?' (?: [^\'\n\\] | \\ #{ESCAPE} )? '? /ox)
+ kind = :char
+
+ elsif scan(/0[xX][0-9A-Fa-f]+/)
+ kind = :hex
+
+ elsif scan(/(?:0[0-7]+)(?![89.eEfF])/)
+ kind = :oct
+
+ elsif scan(/(?:\d+)(?![.eEfF])/)
+ kind = :integer
+
+ elsif scan(/\d[fF]?|\d*\.\d+(?:[eE][+-]?\d+)?[fF]?|\d+[eE][+-]?\d+[fF]?/)
+ kind = :float
+
+ else
+ getch
+ kind = :error
+
+ end
+
+ when :string
+ if scan(/[^\\\n"]+/)
+ kind = :content
+ elsif scan(/"/)
+ tokens << ['"', :string]
+ tokens << [:close, :string]
+ state = :initial
+ next
+ elsif scan(/ \\ (?: #{ESCAPE} | #{UNICODE_ESCAPE} ) /mox)
+ kind = :char
+ elsif scan(/ \\ | $ /x)
+ tokens << [:close, :string]
+ kind = :error
+ state = :initial
+ else
+ raise_inspect "else case \" reached; %p not handled." % peek(1), tokens
+ end
+
+ when :include_expected
+ if scan(/<[^>\n]+>?|"[^"\n\\]*(?:\\.[^"\n\\]*)*"?/)
+ kind = :include
+ state = :initial
+
+ elsif match = scan(/\s+/)
+ kind = :space
+ state = :initial if match.index ?\n
+
+ else
+ getch
+ kind = :error
+
+ end
+
+ else
+ raise_inspect 'Unknown state', tokens
+
+ end
+
+ match ||= matched
+ if $DEBUG and not kind
+ raise_inspect 'Error token %p in line %d' %
+ [[match, kind], line], tokens
+ end
+ raise_inspect 'Empty token', tokens unless match
+
+ tokens << [match, kind]
+
+ end
+
+ if state == :string
+ tokens << [:close, :string]
+ end
+
+ tokens
+ end
+
+ end
+
+end
+end
|
