Fill unused asso_values[] entries in search.cc, not in output.cc.

ChangeLog

@@ -1,5 +1,13 @@
 2002-12-10  Bruno Haible  <bruno@clisp.org>
 
+	* src/search.cc (Search::optimize): Fill unused asso_values[] entries
+	with a large value.
+	* src/output.h (Output::Output): Remove occurrences argument.
+	(Output::_occurrences): Remove field.
+	* src/output.cc (Output::Output): Remove occurrences argument.
+	(Output::output_hash_function): Ignore _occurrences.
+	* src/main.cc (main): Don't pass the _occurrences to Output.
+
 	* src/search.cc (Search::preprepare): Exit if keywords contain
 	out-of-range characters.
 

src/main.cc

@@ -109,7 +109,6 @@ main (int argc, char *argv[])
                           searcher._alpha_inc,
                           searcher._total_duplicates,
                           searcher._alpha_size,
-                          searcher._occurrences,
                           searcher._asso_values);
         outputter.output ();
 

src/output.cc

@@ -89,7 +89,7 @@ Output::Output (KeywordExt_List *head, const char *struct_decl,
                 int total_keys, int max_key_len, int min_key_len,
                 const Positions& positions, const unsigned int *alpha_inc,
                 int total_duplicates, unsigned int alpha_size,
-                const int *occurrences, const int *asso_values)
+                const int *asso_values)
   : _head (head), _struct_decl (struct_decl),
     _struct_decl_lineno (struct_decl_lineno), _return_type (return_type),
     _struct_tag (struct_tag),
@@ -103,7 +103,7 @@ Output::Output (KeywordExt_List *head, const char *struct_decl,
     _max_key_len (max_key_len), _min_key_len (min_key_len),
     _key_positions (positions), _alpha_inc (alpha_inc),
     _total_duplicates (total_duplicates), _alpha_size (alpha_size),
-    _occurrences (occurrences), _asso_values (asso_values)
+    _asso_values (asso_values)
 {
 }
 
@@ -492,8 +492,7 @@ Output::output_hash_function () const
             printf (",");
           if ((count % columns) == 0)
             printf ("\n     ");
-          printf ("%*d", field_width,
-                  _occurrences[count] ? _asso_values[count] : _max_hash_value + 1);
+          printf ("%*d", field_width, _asso_values[count]);
         }
 
       printf ("\n"

src/output.h

@@ -54,7 +54,6 @@ public:
                                 const unsigned int *alpha_inc,
                                 int total_duplicates,
                                 unsigned int alpha_size,
-                                const int *occurrences,
                                 const int *asso_values);
 
   /* Generates the hash function and the key word recognizer function.  */
@@ -132,8 +131,6 @@ private:
   int                   _max_hash_value;
   /* Size of alphabet. */
   unsigned int const    _alpha_size;
-  /* Counts occurrences of each key set character. */
-  const int * const     _occurrences;
   /* Value associated with each character. */
   const int * const     _asso_values;
 };

src/search.cc

@@ -1477,6 +1477,21 @@ Search::optimize ()
 
   /* Sorts the keyword list by hash value.  */
   sort ();
+
+  /* Set unused asso_values[c] to max_hash_value + 1.  This is not absolutely
+     necessary, but speeds up the lookup function in many cases of lookup
+     failure: no string comparison is needed once the hash value of a string
+     is larger than the hash value of any keyword.  */
+  int max_hash_value;
+  {
+    KeywordExt_List *temp;
+    for (temp = _head; temp->rest(); temp = temp->rest())
+      ;
+    max_hash_value = temp->first()->_hash_value;
+  }
+  for (unsigned int c = 0; c < _alpha_size; c++)
+    if (_occurrences[c] == 0)
+      _asso_values[c] = max_hash_value + 1;
 }
 
 /* Prints out some diagnostics upon completion.  */