lily/keyword.cc

   1 /*
   2   keyword.cc -- keywords and identifiers
   3  */
   4 #include <string.h>
   5 #include <stdlib.h>
   6 #include "keyword.hh"
   7
   8
   9 /* for qsort */
  10 int tabcmp (Keyword_ent  const &p1, Keyword_ent const &p2)
  11 {
  12   return strcmp (p1.name_, p2.name_);
  13 }
  14
  15 Keyword_table::Keyword_table (Keyword_ent *tab)
  16 {
  17   while (tab->name_)
  18     {
  19       table_.push (*tab++);
  20     }
  21
  22   table_.sort (tabcmp);
  23 }
  24
  25 int
  26 Keyword_table::lookup (char const *s) const
  27 {
  28   Keyword_ent e ;
  29   e.name_ =  s;
  30   int idx = binary_search (table_, e, tabcmp);
  31   if (idx >= 0)
  32     return table_[idx].tokcode_;
  33   else
  34     return -1;
  35 }