src/parser/parser.h

   1 #ifndef _PARSER_H_
   2 #define _PARSER_H_
   3
   4 #include <string>
   5 #include <vector>
   6 #include <QTextStream>
   7 #include "../diff/diff.h"
   8
   9 class Tokens{
  10   public:
  11     /*{*/
  12     /**
  13      * Tokens
  14      */
  15     QRegExp file_tok;
  16     QRegExp hunk_tok;
  17     QRegExp context_tok;
  18     QRegExp added_tok;
  19     QRegExp deleted_tok;
  20     /*}*/
  21
  22   protected:
  23     Tokens(const char *file_tok,
  24            const char *hunk_tok,
  25            const char *context_tok,
  26            const char *added_tok,
  27            const char *deleted_tok);
  28
  29   public:
  30     enum token{
  31         FILE_TOK,
  32         HUNK_TOK,
  33         CONTEXT_TOK,
  34         ADDED_TOK,
  35         DELETED_TOK,
  36         NONE_TOK
  37     };
  38
  39     virtual token match(QString &line) const;
  40 };
  41
  42
  43 class TokensGit : public Tokens{
  44   public:
  45     TokensGit();
  46 };
  47
  48
  49 Tokens *factory(std::string);
  50
  51 class Parser{
  52   private:
  53     enum states{
  54         START_STATE = 0,
  55         FILE_STATE,
  56         HUNK_STATE,
  57         CONTEXT_STATE,
  58         ADDED_STATE,
  59         DELETED_STATE,
  60         CHANGED_STATE,
  61         END_STATE
  62     };
  63
  64     states _current_state;
  65     QString _current_line;
  66     Tokens::token _current_token;
  67
  68     QTextStream *_in;
  69     Tokens *_tokens;
  70
  71     File *_cur_file;
  72     Hunk *_cur_hunk;
  73     Text *_cur_context;
  74     Text *_cur_deleted;
  75     Text *_cur_added;
  76
  77     void _changeState(states);
  78     void _readNextLine();
  79     QString _capCurrentLine(int);
  80
  81     void _createNewFile();
  82     void _finishFile();
  83
  84     void _createNewHunk();
  85     void _finishHunk();
  86
  87     void _addCurrentLineToContext();
  88     void _finishContext();
  89     void _addCurrentLineToAdded();
  90     void _finishAdded();
  91     void _addCurrentLineToDeleted();
  92     void _finishDeleted();
  93     void _finishChanged();
  94
  95     void _start();
  96     void _file();
  97     void _hunk();
  98     void _context();
  99     void _added();
 100     void _deleted();
 101     void _changed();
 102     void _end();
 103   public:
 104     Parser(std::string type, QTextStream *in) :
 105         _current_state(START_STATE),
 106         _in(in),
 107         _cur_file(NULL), _cur_hunk(NULL), _cur_context(NULL),
 108         _cur_deleted(NULL), _cur_added(NULL) { _tokens = factory(type); }
 109     void parse();
 110 };
 111
 112 #endif