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- /* This may look like C code, but it is really -*- C++ -*- */
-
- /* Data and function member declarations for the keyword list class.
-
- Copyright (C) 1989 Free Software Foundation, Inc.
- written by Douglas C. Schmidt (schmidt@ics.uci.edu)
-
- This file is part of GNU GPERF.
-
- GNU GPERF is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- GNU GPERF is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU GPERF; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* The key word list is a useful abstraction that keeps track of
- various pieces of information that enable that fast generation
- of the Gen_Perf.hash function. A Key_List is a singly-linked
- list of List_Nodes. */
-
- #pragma once
- #include "list-node.h"
- #include "std-err.h"
- #include "vectors.h"
- #include "read-line.h"
-
- class Key_List : private Std_Err, private Read_Line, public Vectors
- {
- private:
- const int MAX_INT = ~unsigned (0) >> 1; /* Most positive integer value. */
- const int MIN_INT = ~unsigned (0) ^ MAX_INT; /* Most negative integer value. */
- const int MAX_SIGNED_CHAR = 127; /* Maximum value a signed char can take. */
- const int MAX_UNSIGNED_CHAR = 255; /* Maximum value an unsigned char can take. */
- const int MAX_UNSIGNED_SHORT = 65535; /* Maximum value an unsigned short can take. */
- const int MAX_SIGNED_SHORT = 32767; /* Maximum value a signed short can take. */
- const int MIN_SIGNED_SHORT = -32768; /* Minimum value a signed short can take. */
- const int TABLE_MULTIPLE = 10; /* Make the hash table 8 times larger than the number of keyword entries. */
- char *const default_array_type = "char *"; /* Default type for generated code. */
- char *const default_return_type = "char *"; /* in_word_set return type, by default. */
- char *array_type; /* Pointer to the type for word list. */
- char *return_type; /* Pointer to return type for lookup function. */
- char *struct_tag; /* Shorthand for user-defined struct tag type. */
- char *include_src; /* C source code to be included verbatim. */
- int max_key_len; /* Maximum length of the longest keyword. */
- int min_key_len; /* Minimum length of the shortest keyword. */
- int min_hash_value; /* Minimum hash value for all keywords. */
- int max_hash_value; /* Maximum hash value for all keywords. */
- int occurrence_sort; /* True if sorting by occurrence. */
- int hash_sort; /* True if sorting by hash value. */
- int additional_code; /* True if any additional C code is included. */
- int list_len; /* Length of head's Key_List, not counting duplicates. */
- int total_keys; /* Total number of keys, counting duplicates. */
- static int determined[ALPHA_SIZE]; /* Used in function reorder, below. */
- static int get_occurrence (List_Node *ptr);
- static int strcspn (const char *s, const char *reject);
- static int already_determined (List_Node *ptr);
- static void set_determined (List_Node *ptr);
- void output_min_max (void);
- void output_switch (void);
- void output_keyword_table (void);
- void output_keylength_table (void);
- void output_hash_function (void);
- void output_lookup_function (void);
- void output_lookup_array (void);
- void set_output_types (void);
- void dump (void);
- char *get_array_type (void);
- char *save_include_src (void);
- char *get_special_input (char delimiter);
- List_Node *merge (List_Node *list1, List_Node *list2);
- List_Node *merge_sort (List_Node *head);
-
- protected:
- List_Node *head; /* Points to the head of the linked list. */
- int total_duplicates; /* Total number of duplicate hash values. */
-
- public:
- Key_List (void);
- ~Key_List (void);
- int keyword_list_length (void);
- int max_key_length (void);
- void reorder (void);
- void sort (void);
- void read_keys (void);
- void output (void);
- };
-