%uri "http://chaperon.sourceforge.net/grammar/wiki/1.0";

%token LINE \-\-\-(\-)+;

%token QUOTE  :;
%token BULLETED (\*)+;

%token NUMBERED3 \#\#\#;
%token NUMBERED2 \#\#;
%token NUMBERED1 \#;

%token HEAD (\!)+;

%left ITALIC \";
%left BOLD __;
%left UNDERLINE _;

%token LINK (http|ftp|mailto|news):(/){1,3}[A-Za-z0-9\.\_\-]*;

%token BOPEN \[;
%token BCLOSE \];

%token TEXT [A-Za-z0-9\,\'\.\?\:]+[A-Za-z0-9\ \t\,\'\.\?\!\:]*;

%left EMPTY \r\n [\ \t]* \r\n |
            \r   [\ \t]* \r   |
            \n   [\ \t]* \n   ;

%token EOL (\r(\n)?|\n);


%start wiki;

%ignore whitespace [\ \r\n]+;

%%

wiki : wiki paragraphs %append
     | paragraphs      %append
     ;

paragraphs : paragraphs paragraph %append
           | paragraph            %append
           ;

paragraph : bulletedlist
          | numberedlist1
          | textitem 
          | headitem 
          | footnote
          | LINE
          | EMPTY
          ;

bulletedlist : bulletedlist bulletedlistitem %append
             | bulletedlistitem              %append
             ;

bulletedlistitem : BULLETED textblock textsequence
                 | BULLETED textblock
                 ;

numberedlist1 : numberedlist1 numberedlistitem1 %append
              | numberedlistitem1               %append
              | numberedlist1 numberedlist2     %append
              | numberedlist2                   %append
              ;

numberedlistitem1 : NUMBERED1 textblock textsequence
                  | NUMBERED1 textblock
                  ;

numberedlist2 : numberedlist2 numberedlistitem2 %append
              | numberedlistitem2               %append
              | numberedlist2 numberedlist3     %append
              | numberedlist3                   %append
              ; 

numberedlistitem2 : NUMBERED2 textblock textsequence
                  | NUMBERED2 textblock 
                  ;

numberedlist3 : numberedlist3 numberedlistitem3 %append
              | numberedlistitem3               %append
              ; 

numberedlistitem3 : NUMBERED3 textblock textsequence
                  | NUMBERED3 textblock 
                  ;

textitem : firstblock textblock textsequence
         | firstblock textblock
         | firstblock
         ;

headitem : HEAD textblock textsequence
         | HEAD textblock
         ;

footnote : note textblock textsequence
         | note textblock
         ;

textsequence : textsequence EOL       %resolve
             | EOL                    %resolve
             | textsequence textblock %resolve
             | textblock              %resolve
             ; 

textblock : LINK                           
          | boldblock                      
          | italicblock            
          | underlineblock                
          | TEXT                         
          | note                         
          ;

firstblock : LINK                 
           | boldblock                
           | italicblock                
           | underlineblock          
           | TEXT               
           ;

italicblock : ITALIC TEXT ITALIC
            ;

boldblock : BOLD TEXT BOLD
          ;

underlineblock : UNDERLINE TEXT UNDERLINE 
               ;

note : BOPEN TEXT BCLOSE
     | BOPEN LINK BCLOSE
     ;