Reduce regexp usage, now CL-oriented non-regexp code available, core Lisp lisp/ChangeLog addition: 2015-04-01 Aidan Kehoe <kehoea@parhasard.net> When calling #'string-match with a REGEXP without regular expression special characters, call #'search, #'mismatch, #'find, etc. instead, making our code less likely to side-effect other functions' match data and a little faster. * apropos.el (apropos-command): * apropos.el (apropos): Call (position ?\n ...) rather than (string-match "\n" ...) here. * buff-menu.el: * buff-menu.el (buffers-menu-omit-invisible-buffers): Don't fire up the regexp engine just to check if a string starts with a space. * buff-menu.el (select-buffers-tab-buffers-by-mode): Don't fire up the regexp engine just to compare mode basenames. * buff-menu.el (format-buffers-tab-line): * buff-menu.el (build-buffers-tab-internal): Moved to being a label within the following. * buff-menu.el (buffers-tab-items): Use the label. * bytecomp.el (byte-compile-log-1): Don't fire up the regexp engine just to look for a newline. * cus-edit.el (get): Ditto. * cus-edit.el (custom-variable-value-create): Ditto, but for a colon. * descr-text.el (describe-text-sexp): Ditto. * descr-text.el (describe-char-unicode-data): Use #'split-string-by-char given that we're just looking for a semicolon. * descr-text.el (describe-char): Don't fire up the regexp engine just to look for a newline. * disass.el (disassemble-internal): Ditto. * files.el (file-name-sans-extension): Implement this using #'position. * files.el (file-name-extension): Correct this function's docstring, implement it in terms of #'position. * files.el (insert-directory): Don't fire up the regexp engine to split a string by space; don't reverse the list of switches, this is actually a longstand bug as far as I can see. * gnuserv.el (gnuserv-process-filter): Use #'position here, instead of consing inside #'split-string needlessly. * gtk-file-dialog.el (gtk-file-dialog-update-dropdown): Use #'split-string-by-char here, don't fire up #'split-string for directory-sep-char. * gtk-font-menu.el (hack-font-truename): Implement this more cheaply in terms of #'find, #'split-string-by-char, #'equal, rather than #'string-match, #'split-string, #'string-equal. * hyper-apropos.el (hyper-apropos-grok-functions): * hyper-apropos.el (hyper-apropos-grok-variables): Look for a newline using #'position rather than #'string-match in these functions. * info.el (Info-insert-dir): * info.el (Info-insert-file-contents): * info.el (Info-follow-reference): * info.el (Info-extract-menu-node-name): * info.el (Info-menu): Look for fixed strings using #'position or #'search as appropriate in this file. * ldap.el (ldap-decode-string): * ldap.el (ldap-encode-string): #'encode-coding-string, #'decode-coding-string are always available, don't check if they're fboundp. * ldap.el (ldap-decode-address): * ldap.el (ldap-encode-address): Use #'split-string-by-char in these functions. * lisp-mnt.el (lm-creation-date): * lisp-mnt.el (lm-last-modified-date): Don't fire up the regexp engine just to look for spaces in this file. * menubar-items.el (default-menubar): Use (not (mismatch ...)) rather than #'string-match here, for simple regexp. Use (search "beta" ...) rather than (string-match "beta" ...) * menubar-items.el (sort-buffers-menu-alphabetically): * menubar-items.el (sort-buffers-menu-by-mode-then-alphabetically): * menubar-items.el (group-buffers-menu-by-mode-then-alphabetically): Don't fire up the regexp engine to check if a string starts with a space or an asterisk. Use the more fine-grained results of #'compare-strings; compare case-insensitively for the buffer menu. * menubar-items.el (list-all-buffers): * menubar-items.el (tutorials-menu-filter): Use #'equal rather than #'string-equal, which, in this context, has the drawback of not having a bytecode, and no redeeming features. * minibuf.el: * minibuf.el (un-substitute-in-file-name): Use #'count, rather than counting the occurences of $ using the regexp engine. * minibuf.el (read-file-name-internal-1): Don't fire up the regexp engine to search for ?=. * mouse.el (mouse-eval-sexp): Check for newline with #'find. * msw-font-menu.el (mswindows-reset-device-font-menus): Split a string by newline with #'split-string-by-char. * mule/japanese.el: * mule/japanese.el ("Japanese"): Use #'search rather than #'string-match; canoncase before comparing; fix a bug I had introduced where I had been making case insensitive comparisons where the case mattered. * mule/korea-util.el (default-korean-keyboard): Look for ?3 using #'find, not #'string-march. * mule/korea-util.el (quail-hangul-switch-hanja): Search for a fixed string using #'search. * mule/mule-cmds.el (set-locale-for-language-environment): #'position, #'substitute rather than #'string-match, #'replace-in-string. * newcomment.el (comment-make-extra-lines): Use #'search rather than #'string-match for a simple string. * package-get.el (package-get-remote-filename): Use #'position when looking for ?@ * process.el (setenv): * process.el (read-envvar-name): Use #'position when looking for ?=. * replace.el (map-query-replace-regexp): Use #'split-string-by-char instead of using an inline implementation of it. * select.el (select-convert-from-cf-text): * select.el (select-convert-from-cf-unicodetext): Use #'position rather than #'string-match in these functions. * setup-paths.el (paths-emacs-data-root-p): Use #'search when looking for simple string. * sound.el (load-sound-file): Use #'split-string-by-char rather than an inline reimplementation of same. * startup.el (splash-screen-window-body): * startup.el (splash-screen-tty-body): Search for simple strings using #'search. * version.el (emacs-version): Ditto. * x-font-menu.el (hack-font-truename): Implement this more cheaply in terms of #'find, #'split-string-by-char, #'equal, rather than #'string-match, #'split-string, #'string-equal. * x-font-menu.el (x-reset-device-font-menus-core): Use #'split-string-by-char here. * x-init.el (x-initialize-keyboard): Search for a simple string using #'search.

/* Lisp interface to hash tables -- include file.
   Copyright (C) 1995, 1996 Ben Wing.

This file is part of XEmacs.

XEmacs 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 3 of the License, or (at your
option) any later version.

XEmacs 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 XEmacs.  If not, see <http://www.gnu.org/licenses/>. */

/* Synched up with: Not in FSF. */

#ifndef INCLUDED_elhash_h_
#define INCLUDED_elhash_h_

typedef struct Lisp_Hash_Table Lisp_Hash_Table;

DECLARE_LISP_OBJECT (hash_table, Lisp_Hash_Table);

#define XHASH_TABLE(x) XRECORD (x, hash_table, Lisp_Hash_Table)
#define wrap_hash_table(p) wrap_record (p, hash_table)
#define HASH_TABLEP(x) RECORDP (x, hash_table)
#define CHECK_HASH_TABLE(x) CHECK_RECORD (x, hash_table)
#define CONCHECK_HASH_TABLE(x) CONCHECK_RECORD (x, hash_table)

typedef struct htentry
{
#ifdef NEW_GC
  NORMAL_LISP_OBJECT_HEADER lheader;
#endif /* NEW_GC */  
  Lisp_Object key;
  Lisp_Object value;
} htentry;

#define HTENTRY_CLEAR_P(htentry) ((*(EMACS_UINT*)(&((htentry)->key))) == 0)

#ifdef NEW_GC

typedef struct htentry Lisp_Hash_Table_Entry;

DECLARE_LISP_OBJECT (hash_table_entry, Lisp_Hash_Table_Entry);

#define XHASH_TABLE_ENTRY(x) \
  XRECORD (x, hash_table_entry, Lisp_Hash_Table_Entry)
#define wrap_hash_table_entry(p) wrap_record (p, hash_table_entry)
#define HASH_TABLE_ENTRYP(x) RECORDP (x, hash_table_entry)
#define CHECK_HASH_TABLE_ENTRY(x) CHECK_RECORD (x, hash_table_entry)
#define CONCHECK_HASH_TABLE_ENTRY(x) CONCHECK_RECORD (x, hash_table_entry)
#endif /* NEW_GC */

enum hash_table_weakness
{
  HASH_TABLE_NON_WEAK,
  HASH_TABLE_KEY_WEAK,
  HASH_TABLE_VALUE_WEAK,
  HASH_TABLE_KEY_VALUE_WEAK,
  HASH_TABLE_KEY_CAR_WEAK,
  HASH_TABLE_VALUE_CAR_WEAK,
  HASH_TABLE_KEY_CAR_VALUE_WEAK,
  HASH_TABLE_WEAK
};

enum hash_table_test
{
  HASH_TABLE_EQ,
  HASH_TABLE_EQL,
  HASH_TABLE_EQUAL,
  HASH_TABLE_EQUALP
};

extern const struct memory_description hash_table_description[];

EXFUN (Fcopy_hash_table, 1);
EXFUN (Fhash_table_count, 1);
EXFUN (Fgethash, 3);
EXFUN (Fputhash, 3);
EXFUN (Fremhash, 2);
EXFUN (Fclrhash, 1);

typedef struct Hash_Table_Test Hash_Table_Test;

DECLARE_LISP_OBJECT (hash_table_test, struct Hash_Table_Test);
#define XHASH_TABLE_TEST(x) XRECORD (x, hash_table_test, struct Hash_Table_Test)
#define wrap_hash_table_test(p) wrap_record (p, hash_table_test)
#define HASH_TABLE_TESTP(x) RECORDP (x, hash_table_test)
#define CHECK_HASH_TABLE_TEST(x) CHECK_RECORD (x, hash_table_test)
#define CONCHECK_HASH_TABLE_TEST(x) CONCHECK_RECORD (x, hash_table_test)

typedef int (*hash_table_equal_function_t) (const Hash_Table_Test *http,
                                           Lisp_Object obj1, Lisp_Object obj2);
typedef Hashcode (*hash_table_hash_function_t) (const Hash_Table_Test *http,
                                                Lisp_Object obj);
typedef int (*maphash_function_t) (Lisp_Object key, Lisp_Object value,
				   void* extra_arg);

/* test here is a Lisp_Object of type hash-table-test. You probably don't
   want to call this, unless you have registered your own test. */
Lisp_Object make_general_lisp_hash_table (Lisp_Object test,
					  Elemcount size,
					  double rehash_size,
					  double rehash_threshold,
					  enum hash_table_weakness weakness);

/* test here is a symbol, e.g. Qeq, Qequal. */
Lisp_Object make_lisp_hash_table (Elemcount size,
				  enum hash_table_weakness weakness,
                                  Lisp_Object test);

void elisp_maphash (maphash_function_t function,
		    Lisp_Object hash_table, void *extra_arg);

void elisp_maphash_unsafe (maphash_function_t function,
			   Lisp_Object hash_table, void *extra_arg);

void elisp_map_remhash (maphash_function_t predicate,
			Lisp_Object hash_table, void *extra_arg);

int finish_marking_weak_hash_tables (void);
void prune_weak_hash_tables (void);

void pdump_reorganize_hash_table (Lisp_Object);

htentry *inchash_eq (Lisp_Object key, Lisp_Object table, EMACS_INT offset);

htentry *find_htentry (Lisp_Object key, const Lisp_Hash_Table *ht);

Lisp_Object define_hash_table_test (Lisp_Object name,
                               hash_table_equal_function_t equal_function,
                               hash_table_hash_function_t hash_function,
                               Lisp_Object lisp_equal_function,
                               Lisp_Object lisp_hash_function);

void mark_hash_table_tests (void);

#endif /* INCLUDED_elhash_h_ */