dialect.cpp

   1 #include "dialect.h"
   2 #include "exceptions.h"
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 static int cmd_cmp(const void *pa, const void *pb) {
   7         const cmdinfo *a = (const cmdinfo *)pa;
   8         const cmdinfo *b = (const cmdinfo *)pb;
   9
  10         return strcmp(a->lookup_key, b->lookup_key);
  11 }
  12
  13 static const cmdinfo *find_cmd(const struct cmdinfo *tbl, int cnt, const char *name) {
  14         cmdinfo key;
  15         key.lookup_key = name;
  16         return (const cmdinfo *)bsearch((void *)&key, (void *)tbl, cnt, sizeof key, cmd_cmp);
  17 }
  18
  19 static int count_cmds(const struct cmdinfo *tbl) {
  20         int i = 0;
  21         while (tbl[i].lookup_key)
  22                 i++;
  23         return i;
  24 }
  25
  26 Dialect::Dialect(const cmdinfo *cmds_, const std::string &n) : cmdcnt(count_cmds(cmds_)), cmds(cmds_), name(n) {
  27 }
  28
  29 const cmdinfo *Dialect::find_command(const char *name) const {
  30         const cmdinfo *ci = find_cmd(cmds, cmdcnt, name);
  31         if (!ci)
  32                 throw parseException(std::string("Command not found: ") + name);
  33         return ci;
  34 }
  35
  36 int Dialect::cmd_index(const cmdinfo *ci) const {
  37         assert(ci >= cmds && ci < cmds + cmdcnt);
  38         return (ci - cmds);
  39 }
  40
  41 std::map<std::string, boost::shared_ptr<Dialect> > dialects;
  42
  43 void registerDelegates() {
  44         registerAutoDelegates();
  45 }
  46
  47 void freeDelegates() {
  48         dialects.clear();
  49 }
  50
  51 /* vim: set noet: */