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168 lines
6.0 KiB
C
168 lines
6.0 KiB
C
/* Routines for name->symbol lookups in GDB.
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Copyright (C) 2003-2018 Free Software Foundation, Inc.
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Contributed by David Carlton <carlton@bactrian.org> and by Kealia,
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Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef DICTIONARY_H
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#define DICTIONARY_H
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#include "symfile.h"
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/* An opaque type for dictionaries; only dictionary.c should know
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about its innards. */
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struct dictionary;
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/* Other types needed for declarations. */
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struct symbol;
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struct obstack;
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struct pending;
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struct language_defn;
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/* The creation functions for various implementations of
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dictionaries. */
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/* Create a dictionary of symbols of language LANGUAGE implemented via
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a fixed-size hashtable. All memory it uses is allocated on
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OBSTACK; the environment is initialized from SYMBOL_LIST. */
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extern struct dictionary *dict_create_hashed (struct obstack *obstack,
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enum language language,
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const struct pending
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*symbol_list);
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/* Create a dictionary of symbols of language LANGUAGE, implemented
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via a hashtable that grows as necessary. The dictionary is
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initially empty; to add symbols to it, call dict_add_symbol().
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Call dict_free() when you're done with it. */
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extern struct dictionary *
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dict_create_hashed_expandable (enum language language);
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/* Create a dictionary of symbols of language LANGUAGE, implemented
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via a fixed-size array. All memory it uses is allocated on
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OBSTACK; the environment is initialized from the SYMBOL_LIST. The
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symbols are ordered in the same order that they're found in
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SYMBOL_LIST. */
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extern struct dictionary *dict_create_linear (struct obstack *obstack,
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enum language language,
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const struct pending
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*symbol_list);
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/* Create a dictionary of symbols of language LANGUAGE, implemented
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via an array that grows as necessary. The dictionary is initially
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empty; to add symbols to it, call dict_add_symbol(). Call
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dict_free() when you're done with it. */
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extern struct dictionary *
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dict_create_linear_expandable (enum language language);
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/* The functions providing the interface to dictionaries. Note that
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the most common parts of the interface, namely symbol lookup, are
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only provided via iterator functions. */
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/* Free the memory used by a dictionary that's not on an obstack. (If
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any.) */
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extern void dict_free (struct dictionary *dict);
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/* Add a symbol to an expandable dictionary. */
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extern void dict_add_symbol (struct dictionary *dict, struct symbol *sym);
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/* Utility to add a list of symbols to a dictionary. */
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extern void dict_add_pending (struct dictionary *dict,
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const struct pending *symbol_list);
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/* Is the dictionary empty? */
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extern int dict_empty (struct dictionary *dict);
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/* A type containing data that is used when iterating over all symbols
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in a dictionary. Don't ever look at its innards; this type would
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be opaque if we didn't need to be able to allocate it on the
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stack. */
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struct dict_iterator
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{
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/* The dictionary that this iterator is associated to. */
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const struct dictionary *dict;
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/* The next two members are data that is used in a way that depends
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on DICT's implementation type. */
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int index;
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struct symbol *current;
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};
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/* Initialize ITERATOR to point at the first symbol in DICT, and
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return that first symbol, or NULL if DICT is empty. */
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extern struct symbol *dict_iterator_first (const struct dictionary *dict,
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struct dict_iterator *iterator);
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/* Advance ITERATOR, and return the next symbol, or NULL if there are
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no more symbols. Don't call this if you've previously received
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NULL from dict_iterator_first or dict_iterator_next on this
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iteration. */
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extern struct symbol *dict_iterator_next (struct dict_iterator *iterator);
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/* Initialize ITERATOR to point at the first symbol in DICT whose
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SYMBOL_SEARCH_NAME is NAME, as tested using COMPARE (which must use
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the same conventions as strcmp_iw and be compatible with any
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dictionary hashing function), and return that first symbol, or NULL
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if there are no such symbols. */
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extern struct symbol *dict_iter_match_first (const struct dictionary *dict,
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const lookup_name_info &name,
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struct dict_iterator *iterator);
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/* Advance ITERATOR to point at the next symbol in DICT whose
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SYMBOL_SEARCH_NAME is NAME, as tested using COMPARE (see
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dict_iter_match_first), or NULL if there are no more such symbols.
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Don't call this if you've previously received NULL from
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dict_iterator_match_first or dict_iterator_match_next on this
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iteration. And don't call it unless ITERATOR was created by a
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previous call to dict_iter_match_first with the same NAME and COMPARE. */
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extern struct symbol *dict_iter_match_next (const lookup_name_info &name,
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struct dict_iterator *iterator);
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/* Return some notion of the size of the dictionary: the number of
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symbols if we have that, the number of hash buckets otherwise. */
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extern int dict_size (const struct dictionary *dict);
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/* Macro to loop through all symbols in a dictionary DICT, in no
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particular order. ITER is a struct dict_iterator (NOTE: __not__ a
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struct dict_iterator *), and SYM points to the current symbol.
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It's implemented as a single loop, so you can terminate the loop
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early by a break if you desire. */
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#define ALL_DICT_SYMBOLS(dict, iter, sym) \
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for ((sym) = dict_iterator_first ((dict), &(iter)); \
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(sym); \
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(sym) = dict_iterator_next (&(iter)))
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#endif /* DICTIONARY_H */
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