Start using bool.

14 files changed, 53 insertions, 51 deletions

diff --git a/src/bool-array.h b/src/bool-array.h
index b81d162..3651173 100644
--- a/src/bool-array.h
+++ b/src/bool-array.h
@@ -46,8 +46,9 @@ public:
   /* Resets all bits to zero.  */
   void                  clear ();
 
-  /* Sets the specified bit to one.  Returns its previous value (0 or 1).  */
-  int                   set_bit (unsigned int index);
+  /* Sets the specified bit to true.
+     Returns its previous value (false or true).  */
+  bool                  set_bit (unsigned int index);
 
 private:
   /* Size of array.  */
diff --git a/src/bool-array.icc b/src/bool-array.icc
index 6a41cdf..bc85076 100644
--- a/src/bool-array.icc
+++ b/src/bool-array.icc
@@ -38,18 +38,19 @@ Bool_Array::Bool_Array (unsigned int size)
              _size, (unsigned int) (_size * sizeof (_storage_array[0])));
 }
 
-/* Sets the specified bit to one.  Returns its previous value (0 or 1).  */
-INLINE int
+/* Sets the specified bit to true.
+   Returns its previous value (false or true).  */
+INLINE bool
 Bool_Array::set_bit (unsigned int index)
 {
   if (_storage_array[index] == _iteration_number)
     /* The bit was set since the last clear() call.  */
-    return 1;
+    return true;
   else
     {
       /* The last operation on this bit was clear().  Set it now.  */
       _storage_array[index] = _iteration_number;
-      return 0;
+      return false;
     }
 }
 
diff --git a/src/gen-perf.cc b/src/gen-perf.cc
index a90994d..cdd62a6 100644
--- a/src/gen-perf.cc
+++ b/src/gen-perf.cc
@@ -168,7 +168,7 @@ Gen_Perf::hash (KeywordExt *key_node)
    that all legal Asso_Values are visited without repetition since
    Option.Get_Jump was forced to be an odd value! */
 
-inline int
+inline bool
 Gen_Perf::affects_prev (char c, KeywordExt *curr)
 {
   int original_char = _asso_values[(unsigned char)c];
@@ -202,7 +202,7 @@ Gen_Perf::affects_prev (char c, KeywordExt *curr)
               _fewest_collisions = collisions;
               if (option[DEBUG])
                 fprintf (stderr, "- resolved after %d iterations", total_iterations - i);
-              return 0;
+              return false;
             }
         }
     }
@@ -210,7 +210,7 @@ Gen_Perf::affects_prev (char c, KeywordExt *curr)
   /* Restore original values, no more tries. */
   _asso_values[(unsigned char)c] = original_char;
   /* If we're this far it's time to try the next character.... */
-  return 1;
+  return true;
 }
 
 /* Change a character value, try least-used characters first. */
diff --git a/src/gen-perf.h b/src/gen-perf.h
index 80f0f42..7443daa 100644
--- a/src/gen-perf.h
+++ b/src/gen-perf.h
@@ -37,7 +37,7 @@ private:
   Bool_Array *          _collision_detector;
 
   void                  change (KeywordExt *prior, KeywordExt *curr);
-  int                   affects_prev (char c, KeywordExt *curr);
+  bool                  affects_prev (char c, KeywordExt *curr);
   static int            hash (KeywordExt *key_node);
   static int            compute_disjoint_union (const char *set_1, int size_1, const char *set_2, int size_2, char *set_3);
   static void           sort_set (char *union_set, int len);
diff --git a/src/hash-table.cc b/src/hash-table.cc
index 26be5fa..8830cb6 100644
--- a/src/hash-table.cc
+++ b/src/hash-table.cc
@@ -34,7 +34,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111, USA.  */
    This compromises information hiding somewhat, but greatly reduces
    memory fragmentation, since we can now use alloca! */
 
-Hash_Table::Hash_Table (KeywordExt **table_ptr, int s, int ignore_len):
+Hash_Table::Hash_Table (KeywordExt **table_ptr, int s, bool ignore_len):
      _table (table_ptr), _size (s), _collisions (0), _ignore_length (ignore_len)
 {
   memset ((char *) _table, 0, _size * sizeof (*_table));
diff --git a/src/hash-table.h b/src/hash-table.h
index 0f3a95c..0e94239 100644
--- a/src/hash-table.h
+++ b/src/hash-table.h
@@ -32,10 +32,10 @@ private:
   KeywordExt **         _table;      /* Vector of pointers to linked lists of keywords. */
   int                   _size;       /* Size of the vector. */
   int                   _collisions; /* Find out how well our double hashing is working! */
-  int                   _ignore_length;
+  bool                  _ignore_length;
 
 public:
-                        Hash_Table (KeywordExt **t, int s, int ignore_len);
+                        Hash_Table (KeywordExt **t, int s, bool ignore_len);
                         ~Hash_Table ();
   KeywordExt *          insert (KeywordExt *item);
 };
diff --git a/src/input.cc b/src/input.cc
index 1d18210..d57abde 100644
--- a/src/input.cc
+++ b/src/input.cc
@@ -343,5 +343,5 @@ Input::read_keys ()
 
   /* See if any additional C code is included at end of this file. */
   if (ptr)
-    _additional_code = 1;
+    _additional_code = true;
 }
diff --git a/src/input.h b/src/input.h
index d7e8247..583bcb8 100644
--- a/src/input.h
+++ b/src/input.h
@@ -45,7 +45,7 @@ public:
   const char *          _return_type;                          /* Pointer to return type for lookup function. */
   const char *          _struct_tag;                           /* Shorthand for user-defined struct tag type. */
   const char *          _include_src;                          /* C source code to be included verbatim. */
-  int                   _additional_code;                      /* True if any additional C code is included. */
+  bool                  _additional_code;                      /* True if any additional C code is included. */
   KeywordExt_List *     _head;                            /* Points to the head of the linked list. */
 };
 
diff --git a/src/key-list.cc b/src/key-list.cc
index 81db2ac..c1ff2cd 100644
--- a/src/key-list.cc
+++ b/src/key-list.cc
@@ -32,7 +32,7 @@ static const int TABLE_MULTIPLE     = 10;
 /* Efficiently returns the least power of two greater than or equal to X! */
 #define POW(X) ((!X)?1:(X-=1,X|=X>>1,X|=X>>2,X|=X>>4,X|=X>>8,X|=X>>16,(++X)))
 
-int Key_List::_determined[MAX_ALPHA_SIZE];
+bool Key_List::_determined[MAX_ALPHA_SIZE];
 
 /* Destructor dumps diagnostics during debugging. */
 
@@ -232,15 +232,15 @@ Key_List::set_determined (KeywordExt *ptr)
   const char *p = ptr->_selchars;
   unsigned int i = ptr->_selchars_length;
   for (; i > 0; p++, i--)
-    _determined[(unsigned char)(*p)] = 1;
+    _determined[(unsigned char)(*p)] = true;
 }
 
 /* Returns TRUE if PTR's key set is already completely determined. */
 
-inline int
+inline bool
 Key_List::already_determined (KeywordExt *ptr)
 {
-  int is_determined = 1;
+  bool is_determined = true;
 
   const char *p = ptr->_selchars;
   unsigned int i = ptr->_selchars_length;
@@ -267,8 +267,8 @@ Key_List::reorder ()
       keyword->_occurrence = get_occurrence (keyword);
     }
 
-  _hash_sort = 0;
-  _occurrence_sort = 1;
+  _hash_sort = false;
+  _occurrence_sort = true;
 
   _head = merge_sort (_head);
 
@@ -302,8 +302,8 @@ Key_List::reorder ()
 void
 Key_List::sort ()
 {
-  _hash_sort       = 1;
-  _occurrence_sort = 0;
+  _hash_sort       = true;
+  _occurrence_sort = false;
 
   _head = merge_sort (_head);
 }
@@ -337,7 +337,7 @@ Key_List::Key_List ()
   _struct_tag       = 0;
   _head             = 0;
   _total_duplicates = 0;
-  _additional_code  = 0;
+  _additional_code  = false;
 }
 
 /* Returns the length of entire key list. */
diff --git a/src/key-list.h b/src/key-list.h
index a09fa1a..b1459a0 100644
--- a/src/key-list.h
+++ b/src/key-list.h
@@ -43,19 +43,19 @@ protected:
   int                   _max_key_len;                          /* Maximum length of the longest keyword. */
   int                   _min_key_len;                          /* Minimum length of the shortest keyword. */
 private:
-  int                   _occurrence_sort;                      /* True if sorting by occurrence. */
-  int                   _hash_sort;                            /* True if sorting by hash value. */
+  bool                  _occurrence_sort;                      /* True if sorting by occurrence. */
+  bool                  _hash_sort;                            /* True if sorting by hash value. */
 protected:
-  int                   _additional_code;                      /* True if any additional C code is included. */
+  bool                  _additional_code;                      /* True if any additional C code is included. */
 private:
   int                   _list_len;                             /* Length of head's Key_List, not counting duplicates. */
 protected:
   int                   _total_keys;                           /* Total number of keys, counting duplicates. */
   int                   _size;                                 /* Range of the hash table. */
 private:
-  static int            _determined[MAX_ALPHA_SIZE];           /* Used in function reorder, below. */
+  static bool           _determined[MAX_ALPHA_SIZE];           /* Used in function reorder, below. */
   static int            get_occurrence (KeywordExt *ptr);
-  static int            already_determined (KeywordExt *ptr);
+  static bool           already_determined (KeywordExt *ptr);
   static void           set_determined (KeywordExt *ptr);
   void                  dump ();
   KeywordExt_List *     merge (KeywordExt_List *list1, KeywordExt_List *list2);
diff --git a/src/options.h b/src/options.h
index 1ea6a15..479cc08 100644
--- a/src/options.h
+++ b/src/options.h
@@ -127,8 +127,8 @@ public:
   void                  set_size (unsigned int size);
 
   /* Sorts the array in reverse order.
-     Returns 1 if there are no duplicates, 0 otherwise.  */
-  int                   sort ();
+     Returns true if there are no duplicates, false otherwise.  */
+  bool                  sort ();
 
 private:
   /* Number of positions, excluding the terminating PositionIterator::EOS.  */
@@ -176,8 +176,8 @@ public:
 
   /* Accessors.  */
 
-  /* Tests a given boolean option.  Returns 1 if set, 0 otherwise.  */
-  int                   operator[] (Option_Type option) const;
+  /* Tests a given boolean option.  Returns true if set, false otherwise.  */
+  bool                  operator[] (Option_Type option) const;
 
   /* Returns the iterations value.  */
   int                   get_iterations () const;
diff --git a/src/options.icc b/src/options.icc
index eef1687..7479750 100644
--- a/src/options.icc
+++ b/src/options.icc
@@ -68,12 +68,12 @@ Positions::set_size (unsigned int size)
 }
 
 /* Sorts the array in reverse order.
-   Returns 1 if there are no duplicates, 0 otherwise.  */
-INLINE int
+   Returns true if there are no duplicates, false otherwise.  */
+INLINE bool
 Positions::sort ()
 {
   /* Bubble sort.  */
-  int duplicate_free = 1;
+  bool duplicate_free = true;
   unsigned char *base = _positions;
   unsigned int len = _size;
 
@@ -84,7 +84,7 @@ Positions::sort ()
 
       for (j = i, tmp = base[j]; j > 0 && tmp >= base[j - 1]; j--)
         if ((base[j] = base[j - 1]) == tmp) /* oh no, a duplicate!!! */
-          duplicate_free = 0;
+          duplicate_free = false;
 
       base[j] = tmp;
     }
@@ -105,8 +105,8 @@ PositionIterator::next ()
   return _set._positions[_index++];
 }
 
-/* Tests a given boolean option.  Returns 1 if set, 0 otherwise.  */
-INLINE int
+/* Tests a given boolean option.  Returns true if set, false otherwise.  */
+INLINE bool
 Options::operator[] (Option_Type option) const
 {
   return _option_word & option;
diff --git a/src/output.cc b/src/output.cc
index ad5ae88..b2498c0 100644
--- a/src/output.cc
+++ b/src/output.cc
@@ -65,16 +65,16 @@ static const char *char_to_index;
 /* ------------------------------------------------------------------------- */
 
 /* Constructor.  */
-Output::Output (KeywordExt_List *head_, const char *array_type_,
-                const char *return_type_, const char *struct_tag_,
-                int additional_code_, const char *include_src_,
-                int total_keys_, int total_duplicates_, int max_key_len_,
-                int min_key_len_, Vectors *v_)
-  : _head (head_), _array_type (array_type_), _return_type (return_type_),
-    _struct_tag (struct_tag_), _additional_code (additional_code_),
-    _include_src (include_src_), _total_keys (total_keys_),
-    _total_duplicates (total_duplicates_), _max_key_len (max_key_len_),
-    _min_key_len (min_key_len_), _v (v_)
+Output::Output (KeywordExt_List *head, const char *array_type,
+                const char *return_type, const char *struct_tag,
+                bool additional_code, const char *include_src,
+                int total_keys, int total_duplicates, int max_key_len,
+                int min_key_len, Vectors *v)
+  : _head (head), _array_type (array_type), _return_type (return_type),
+    _struct_tag (struct_tag), _additional_code (additional_code),
+    _include_src (include_src), _total_keys (total_keys),
+    _total_duplicates (total_duplicates), _max_key_len (max_key_len),
+    _min_key_len (min_key_len), _v (v)
 {
 }
 
diff --git a/src/output.h b/src/output.h
index e63a569..79c881d 100644
--- a/src/output.h
+++ b/src/output.h
@@ -34,7 +34,7 @@ struct Output_Compare;
 class Output
 {
 public:
-                        Output (KeywordExt_List *head, const char *array_type, const char *return_type, const char *struct_tag, int additional_code, const char *include_src, int total_keys, int total_duplicates, int max_key_len, int min_key_len, Vectors *v);
+                        Output (KeywordExt_List *head, const char *array_type, const char *return_type, const char *struct_tag, bool additional_code, const char *include_src, int total_keys, int total_duplicates, int max_key_len, int min_key_len, Vectors *v);
   void                  output ();
 private:
   void                  compute_min_max ();
@@ -58,7 +58,7 @@ private:
   /* Shorthand for user-defined struct tag type. */
   const char *          _struct_tag;
   /* True if any additional C code is included. */
-  int                   _additional_code;
+  bool                  _additional_code;
   /* C source code to be included verbatim. */
   const char *          _include_src;
   /* Total number of keys, counting duplicates. */