lily/keyword.cc

   1 /*
   2   keyword.cc -- keywords and identifiers
   3 */
   4
   5 #include "keyword.hh"
   6
   7 #include <cstring>
   8 #include <cstdlib>
   9 using namespace std;
  10
  11 /* for qsort */
  12 bool tab_less (Keyword_ent const &p1, Keyword_ent const &p2)
  13 {
  14   return strcmp (p1.name_, p2.name_) < 0;
  15 }
  16
  17 Keyword_table::Keyword_table (Keyword_ent *tab)
  18 {
  19   while (tab->name_)
  20     table_.push_back (*tab++);
  21
  22   vector_sort (table_, tab_less);
  23 }
  24
  25 vsize
  26 Keyword_table::lookup (char const *s) const
  27 {
  28   Keyword_ent e;
  29   e.name_ = s;
  30   vsize idx = binary_search (table_, e, tab_less);
  31   if (idx != VPOS)
  32     return table_[idx].tokcode_;
  33   return VPOS;
  34 }