Eo: Rewrite and clean the syntax file.

syntax/eo.vim

@@ -4,34 +4,30 @@
 " Last Change:  2014 06 01
 
 " A bunch of useful keywords
+syn keyword    eoBoolean false true
+syn keyword    eoConstants null
+
+syn keyword    eoType int uint bool char uchar byte ubyte double float
+
 syn keyword    classKeywords           class abstract legacy_prefix eo_prefix data contained
 syn keyword    classKeywords           constructors properties methods implements events contained
 
 syn keyword    functionKeywords        set get keys values params constructor destructor finalize const contained return
 
 syn match      classKeywordsMatch      "\w\+" contains=classKeywords,functionKeywords
-syn match      className               "(\w\+::)*\w"
+syn match      className               "(\w\+\.)*\w\+"
 
-syn match      attributes              "@\(inout\|out\|in\|class\)"
+syn match      attributes              "@\(inout\|out\|in\|class\|const\|extern\|protected\|constructor\|nonull\|warn_unused\)"
 
 syn region     eo_comment start="\/\*" end="\*\/"
 
-" Define the default highlighting.
-" For version 5.7 and earlier: only when not done already
-" For version 5.8 and later: only when an item doesn't have highlighting yet
-if version >= 508
-  if version < 508
-    command -nargs=+ HiLink hi link <args>
-  else
-    command -nargs=+ HiLink hi def link <args>
-  endif
+hi def link classKeywords Function
+hi def link functionKeywords Label
+hi def link attributes Constant
+hi def link eo_comment Comment
+hi def link eoBoolean Boolean
+hi def link eoConstants Constant
 
-  HiLink classKeywords Function
-  HiLink functionKeywords Label
-  HiLink attributes Constant
-  HiLink eo_comment Comment
-
-  delcommand HiLink
-endif
+hi def link eoType Type
 
 let b:current_syntax = "eo"