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+/* This may look like C code, but it is really -*- C++ -*- */
+
+/* Output routines.
+
+ Copyright (C) 1989-1998, 2000, 2002-2003 Free Software Foundation, Inc.
+ Written by Douglas C. Schmidt <schmidt@ics.uci.edu>
+ and Bruno Haible <bruno@clisp.org>.
+
+ 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 2, 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 this program; see the file COPYING.
+ If not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef output_h
+#define output_h 1
+
+#include "keyword-list.h"
+#include "positions.h"
+
+/* OSF/1 cxx needs these forward declarations. */
+struct Output_Constants;
+struct Output_Compare;
+
+class Output
+{
+public:
+ /* Constructor. */
+ Output (KeywordExt_List *head,
+ const char *struct_decl,
+ unsigned int struct_decl_lineno,
+ const char *return_type,
+ const char *struct_tag,
+ const char *verbatim_declarations,
+ const char *verbatim_declarations_end,
+ unsigned int verbatim_declarations_lineno,
+ const char *verbatim_code,
+ const char *verbatim_code_end,
+ unsigned int verbatim_code_lineno,
+ bool charset_dependent,
+ 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 *asso_values);
+
+ /* Generates the hash function and the key word recognizer function. */
+ void output ();
+
+private:
+
+ /* Computes the minimum and maximum hash values, and stores them
+ in _min_hash_value and _max_hash_value. */
+ void compute_min_max ();
+
+ /* Returns the number of different hash values. */
+ int num_hash_values () const;
+
+ /* Outputs the maximum and minimum hash values etc. */
+ void output_constants (struct Output_Constants&) const;
+
+ /* Generates a C expression for an asso_values[] reference. */
+ void output_asso_values_ref (int pos) const;
+
+ /* Generates C code for the hash function that returns the
+ proper encoding for each keyword. */
+ void output_hash_function () const;
+
+ /* Prints out a table of keyword lengths, for use with the
+ comparison code in generated function 'in_word_set'. */
+ void output_keylength_table () const;
+
+ /* Prints out the string pool, containing the strings of the keyword table.
+ */
+ void output_string_pool () const;
+
+ /* Prints out the array containing the keywords for the hash function. */
+ void output_keyword_table () const;
+
+ /* Generates the large, sparse table that maps hash values into
+ the smaller, contiguous range of the keyword table. */
+ void output_lookup_array () const;
+
+ /* Generate all pools needed for the lookup function. */
+ void output_lookup_pools () const;
+
+ /* Generate all the tables needed for the lookup function. */
+ void output_lookup_tables () const;
+
+ /* Generates C code to perform the keyword lookup. */
+ void output_lookup_function_body (const struct Output_Compare&) const;
+
+ /* Generates C code for the lookup function. */
+ void output_lookup_function () const;
+
+ /* Linked list of keywords. */
+ KeywordExt_List * _head;
+
+ /* Declaration of struct type for a keyword and its attributes. */
+ const char * const _struct_decl;
+ unsigned int const _struct_decl_lineno;
+ /* Pointer to return type for lookup function. */
+ const char * _return_type;
+ /* Shorthand for user-defined struct tag type. */
+ const char * _struct_tag;
+ /* Element type of keyword array. */
+ const char * _wordlist_eltype;
+ /* The C code from the declarations section. */
+ const char * const _verbatim_declarations;
+ const char * const _verbatim_declarations_end;
+ unsigned int const _verbatim_declarations_lineno;
+ /* The C code from the end of the file. */
+ const char * const _verbatim_code;
+ const char * const _verbatim_code_end;
+ unsigned int const _verbatim_code_lineno;
+ /* Whether the keyword chars would have different values in a different
+ character set. */
+ bool _charset_dependent;
+ /* Total number of keys, counting duplicates. */
+ int const _total_keys;
+ /* Maximum length of the longest keyword. */
+ int const _max_key_len;
+ /* Minimum length of the shortest keyword. */
+ int const _min_key_len;
+ /* Key positions. */
+ Positions const _key_positions;
+ /* Adjustments to add to bytes add specific key positions. */
+ const unsigned int * const _alpha_inc;
+ /* Total number of duplicate hash values. */
+ int const _total_duplicates;
+ /* Minimum hash value for all keywords. */
+ int _min_hash_value;
+ /* Maximum hash value for all keywords. */
+ int _max_hash_value;
+ /* Size of alphabet. */
+ unsigned int const _alpha_size;
+ /* Value associated with each character. */
+ const int * const _asso_values;
+};
+
+#endif