Mercurial > hg > xemacs-beta
diff src/symbols.c @ 442:abe6d1db359e r21-2-36
Import from CVS: tag r21-2-36
author | cvs |
---|---|
date | Mon, 13 Aug 2007 11:35:02 +0200 |
parents | 8de8e3f6228a |
children | 576fb035e263 |
line wrap: on
line diff
--- a/src/symbols.c Mon Aug 13 11:33:40 2007 +0200 +++ b/src/symbols.c Mon Aug 13 11:35:02 2007 +0200 @@ -1,6 +1,6 @@ /* "intern" and friends -- moved here from lread.c and data.c Copyright (C) 1985-1989, 1992-1994 Free Software Foundation, Inc. - Copyright (C) 1995 Ben Wing. + Copyright (C) 1995, 2000 Ben Wing. This file is part of XEmacs. @@ -117,9 +117,36 @@ { XD_END } }; -DEFINE_BASIC_LRECORD_IMPLEMENTATION ("symbol", symbol, - mark_symbol, print_symbol, 0, 0, 0, - symbol_description, Lisp_Symbol); +/* Symbol plists are directly accessible, so we need to protect against + invalid property list structure */ + +static Lisp_Object +symbol_getprop (Lisp_Object symbol, Lisp_Object property) +{ + return external_plist_get (&XSYMBOL (symbol)->plist, property, 0, ERROR_ME); +} + +static int +symbol_putprop (Lisp_Object symbol, Lisp_Object property, Lisp_Object value) +{ + external_plist_put (&XSYMBOL (symbol)->plist, property, value, 0, ERROR_ME); + return 1; +} + +static int +symbol_remprop (Lisp_Object symbol, Lisp_Object property) +{ + return external_remprop (&XSYMBOL (symbol)->plist, property, 0, ERROR_ME); +} + +DEFINE_BASIC_LRECORD_IMPLEMENTATION_WITH_PROPS ("symbol", symbol, + mark_symbol, print_symbol, + 0, 0, 0, symbol_description, + symbol_getprop, + symbol_putprop, + symbol_remprop, + Fsymbol_plist, + Lisp_Symbol); /**********************************************************************/ @@ -150,10 +177,10 @@ } Lisp_Object -intern (CONST char *str) +intern (const char *str) { Bytecount len = strlen (str); - CONST Bufbyte *buf = (CONST Bufbyte *) str; + const Bufbyte *buf = (const Bufbyte *) str; Lisp_Object obarray = Vobarray; if (!VECTORP (obarray) || XVECTOR_LENGTH (obarray) == 0) @@ -312,7 +339,7 @@ Also store the bucket number in oblookup_last_bucket_number. */ Lisp_Object -oblookup (Lisp_Object obarray, CONST Bufbyte *ptr, Bytecount size) +oblookup (Lisp_Object obarray, const Bufbyte *ptr, Bytecount size) { int hash, obsize; Lisp_Symbol *tail; @@ -349,10 +376,10 @@ #if 0 /* Emacs 19.34 */ int -hash_string (CONST Bufbyte *ptr, Bytecount len) +hash_string (const Bufbyte *ptr, Bytecount len) { - CONST Bufbyte *p = ptr; - CONST Bufbyte *end = p + len; + const Bufbyte *p = ptr; + const Bufbyte *end = p + len; Bufbyte c; int hash = 0; @@ -368,7 +395,7 @@ /* derived from hashpjw, Dragon Book P436. */ int -hash_string (CONST Bufbyte *ptr, Bytecount len) +hash_string (const Bufbyte *ptr, Bytecount len) { int hash = 0; @@ -422,11 +449,15 @@ */ (function, obarray)) { + struct gcpro gcpro1; + if (NILP (obarray)) obarray = Vobarray; obarray = check_obarray (obarray); + GCPRO1 (obarray); map_obarray (obarray, mapatoms_1, &function); + UNGCPRO; return Qnil; } @@ -468,14 +499,17 @@ (regexp, predicate)) { struct appropos_mapper_closure closure; + struct gcpro gcpro1; CHECK_STRING (regexp); closure.regexp = regexp; closure.predicate = predicate; closure.accumulation = Qnil; + GCPRO1 (closure.accumulation); map_obarray (Vobarray, apropos_mapper, &closure); closure.accumulation = Fsort (closure.accumulation, Qstring_lessp); + UNGCPRO; return closure.accumulation; } @@ -981,7 +1015,7 @@ DEFINE_LRECORD_IMPLEMENTATION ("symbol-value-forward", symbol_value_forward, - this_one_is_unmarkable, + 0, print_symbol_value_magic, 0, 0, 0, symbol_value_forward_description, struct symbol_value_forward); @@ -1029,7 +1063,7 @@ do_symval_forwarding (Lisp_Object valcontents, struct buffer *buffer, struct console *console) { - CONST struct symbol_value_forward *fwd; + const struct symbol_value_forward *fwd; if (!SYMBOL_VALUE_MAGIC_P (valcontents)) return valcontents; @@ -1097,7 +1131,7 @@ or symbol-value-buffer-local, and if there's a handler, we should have already called it. */ Lisp_Object valcontents = fetch_value_maybe_past_magic (sym, Qt); - CONST struct symbol_value_forward *fwd + const struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (valcontents); int offset = ((char *) symbol_value_forward_forward (fwd) - (char *) &buffer_local_flags); @@ -1110,8 +1144,6 @@ if (mask > 0) /* Not always per-buffer */ { - Lisp_Object elt; - /* Set value in each buffer which hasn't shadowed the default */ LIST_LOOP_2 (elt, Vbuffer_alist) { @@ -1139,7 +1171,7 @@ or symbol-value-buffer-local, and if there's a handler, we should have already called it. */ Lisp_Object valcontents = fetch_value_maybe_past_magic (sym, Qt); - CONST struct symbol_value_forward *fwd + const struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (valcontents); int offset = ((char *) symbol_value_forward_forward (fwd) - (char *) &console_local_flags); @@ -1152,8 +1184,6 @@ if (mask > 0) /* Not always per-console */ { - Lisp_Object console; - /* Set value in each console which hasn't shadowed the default */ LIST_LOOP_2 (console, Vconsole_list) { @@ -1205,7 +1235,7 @@ } else { - CONST struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (ovalue); + const struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (ovalue); int (*magicfun) (Lisp_Object simm, Lisp_Object *val, Lisp_Object in_object, int flags) = symbol_value_forward_magicfun (fwd); @@ -1685,7 +1715,7 @@ case SYMVAL_CURRENT_BUFFER_FORWARD: { - CONST struct symbol_value_forward *fwd + const struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (valcontents); int mask = XINT (*((Lisp_Object *) symbol_value_forward_forward (fwd))); @@ -1697,7 +1727,7 @@ case SYMVAL_SELECTED_CONSOLE_FORWARD: { - CONST struct symbol_value_forward *fwd + const struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (valcontents); int mask = XINT (*((Lisp_Object *) symbol_value_forward_forward (fwd))); @@ -1835,7 +1865,7 @@ case SYMVAL_CURRENT_BUFFER_FORWARD: { - CONST struct symbol_value_forward *fwd + const struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (valcontents); return (*((Lisp_Object *)((char *) XBUFFER (Vbuffer_defaults) + ((char *)symbol_value_forward_forward (fwd) @@ -1844,7 +1874,7 @@ case SYMVAL_SELECTED_CONSOLE_FORWARD: { - CONST struct symbol_value_forward *fwd + const struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (valcontents); return (*((Lisp_Object *)((char *) XCONSOLE (Vconsole_defaults) + ((char *)symbol_value_forward_forward (fwd) @@ -2284,7 +2314,7 @@ case SYMVAL_CURRENT_BUFFER_FORWARD: { - CONST struct symbol_value_forward *fwd + const struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (valcontents); int offset = ((char *) symbol_value_forward_forward (fwd) - (char *) &buffer_local_flags); @@ -2378,7 +2408,7 @@ case SYMVAL_SELECTED_CONSOLE_FORWARD: { - CONST struct symbol_value_forward *fwd + const struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (valcontents); int offset = ((char *) symbol_value_forward_forward (fwd) - (char *) &console_local_flags); @@ -2437,7 +2467,7 @@ case SYMVAL_CURRENT_BUFFER_FORWARD: { - CONST struct symbol_value_forward *fwd + const struct symbol_value_forward *fwd = XSYMBOL_VALUE_FORWARD (valcontents); int mask = XINT (*((Lisp_Object *) symbol_value_forward_forward (fwd))); @@ -3106,18 +3136,37 @@ #endif /* some losing systems can't have static vars at function scope... */ -static struct symbol_value_magic guts_of_unbound_marker = - { { symbol_value_forward_lheader_initializer, 0, 69}, - SYMVAL_UNBOUND_MARKER }; +static const struct symbol_value_magic guts_of_unbound_marker = +{ /* struct symbol_value_magic */ + { /* struct lcrecord_header */ + { /* struct lrecord_header */ + lrecord_type_symbol_value_forward, /* lrecord_type_index */ + 1, /* mark bit */ + 1, /* c_readonly bit */ + 1, /* lisp_readonly bit */ + }, + 0, /* next */ + 0, /* uid */ + 0, /* free */ + }, + 0, /* value */ + SYMVAL_UNBOUND_MARKER +}; void init_symbols_once_early (void) { + INIT_LRECORD_IMPLEMENTATION (symbol); + INIT_LRECORD_IMPLEMENTATION (symbol_value_forward); + INIT_LRECORD_IMPLEMENTATION (symbol_value_buffer_local); + INIT_LRECORD_IMPLEMENTATION (symbol_value_lisp_magic); + INIT_LRECORD_IMPLEMENTATION (symbol_value_varalias); + reinit_symbols_once_early (); /* Bootstrapping problem: Qnil isn't set when make_string_nocopy is called the first time. */ - Qnil = Fmake_symbol (make_string_nocopy ((CONST Bufbyte *) "nil", 3)); + Qnil = Fmake_symbol (make_string_nocopy ((const Bufbyte *) "nil", 3)); XSYMBOL (Qnil)->name->plist = Qnil; XSYMBOL (Qnil)->value = Qnil; /* Nihil ex nihil */ XSYMBOL (Qnil)->plist = Qnil; @@ -3134,21 +3183,10 @@ { /* Required to get around a GCC syntax error on certain architectures */ - struct symbol_value_magic *tem = &guts_of_unbound_marker; + const struct symbol_value_magic *tem = &guts_of_unbound_marker; XSETSYMBOL_VALUE_MAGIC (Qunbound, tem); } - if ((CONST void *) XPNTR (Qunbound) != - (CONST void *)&guts_of_unbound_marker) - { - /* This might happen on DATA_SEG_BITS machines. */ - /* abort (); */ - /* Can't represent a pointer to constant C data using a Lisp_Object. - So heap-allocate it. */ - struct symbol_value_magic *urk = xnew (struct symbol_value_magic); - memcpy (urk, &guts_of_unbound_marker, sizeof (*urk)); - XSETSYMBOL_VALUE_MAGIC (Qunbound, urk); - } XSYMBOL (Qnil)->function = Qunbound; @@ -3171,35 +3209,102 @@ #ifndef Qnull_pointer /* C guarantees that Qnull_pointer will be initialized to all 0 bits, so the following is actually a no-op. */ - XSETOBJ (Qnull_pointer, (enum Lisp_Type) 0, 0); + XSETOBJ (Qnull_pointer, 0); #endif } +static void +defsymbol_massage_name_1 (Lisp_Object *location, const char *name, int dump_p, + int multiword_predicate_p) +{ + char temp[500]; + int len = strlen (name) - 1; + int i; + + if (multiword_predicate_p) + assert (len + 1 < sizeof (temp)); + else + assert (len < sizeof (temp)); + strcpy (temp, name + 1); /* Remove initial Q */ + if (multiword_predicate_p) + { + strcpy (temp + len - 1, "_p"); + len++; + } + for (i = 0; i < len; i++) + if (temp[i] == '_') + temp[i] = '-'; + *location = Fintern (make_string ((const Bufbyte *) temp, len), Qnil); + if (dump_p) + staticpro (location); + else + staticpro_nodump (location); +} + void -defsymbol_nodump (Lisp_Object *location, CONST char *name) +defsymbol_massage_name_nodump (Lisp_Object *location, const char *name) +{ + defsymbol_massage_name_1 (location, name, 0, 0); +} + +void +defsymbol_massage_name (Lisp_Object *location, const char *name) { - *location = Fintern (make_string_nocopy ((CONST Bufbyte *) name, + defsymbol_massage_name_1 (location, name, 1, 0); +} + +void +defsymbol_massage_multiword_predicate_nodump (Lisp_Object *location, + const char *name) +{ + defsymbol_massage_name_1 (location, name, 0, 1); +} + +void +defsymbol_massage_multiword_predicate (Lisp_Object *location, const char *name) +{ + defsymbol_massage_name_1 (location, name, 1, 1); +} + +void +defsymbol_nodump (Lisp_Object *location, const char *name) +{ + *location = Fintern (make_string_nocopy ((const Bufbyte *) name, strlen (name)), Qnil); staticpro_nodump (location); } void -defsymbol (Lisp_Object *location, CONST char *name) +defsymbol (Lisp_Object *location, const char *name) { - *location = Fintern (make_string_nocopy ((CONST Bufbyte *) name, + *location = Fintern (make_string_nocopy ((const Bufbyte *) name, strlen (name)), Qnil); staticpro (location); } void -defkeyword (Lisp_Object *location, CONST char *name) +defkeyword (Lisp_Object *location, const char *name) { defsymbol (location, name); Fset (*location, *location); } +void +defkeyword_massage_name (Lisp_Object *location, const char *name) +{ + char temp[500]; + int len = strlen (name); + + assert (len < sizeof (temp)); + strcpy (temp, name); + temp[1] = ':'; /* it's an underscore in the C variable */ + + defsymbol_massage_name (location, temp); + Fset (*location, *location); +} + #ifdef DEBUG_XEMACS /* Check that nobody spazzed writing a DEFUN. */ static void @@ -3235,16 +3340,16 @@ * Once we have copied everything across, we re-use the original static * structure to store a pointer to the newly allocated one. This will be * used in emodules.c by emodules_doc_subr() to find a pointer to the - * allocated object so that we can set its doc string propperly. + * allocated object so that we can set its doc string properly. * - * NOTE: We dont actually use the DOC pointer here any more, but we did + * NOTE: We don't actually use the DOC pointer here any more, but we did * in an earlier implementation of module support. There is no harm in * setting it here in case we ever need it in future implementations. * subr->doc will point to the new subr structure that was allocated. - * Code can then get this value from the statis subr structure and use + * Code can then get this value from the static subr structure and use * it if required. * - * FIXME: Should newsubr be staticpro()'ed? I dont think so but I need + * FIXME: Should newsubr be staticpro()'ed? I don't think so but I need * a guru to check. */ #define check_module_subr() \ @@ -3252,7 +3357,7 @@ if (initialized) { \ Lisp_Subr *newsubr = (Lisp_Subr *) xmalloc (sizeof (Lisp_Subr)); \ memcpy (newsubr, subr, sizeof (Lisp_Subr)); \ - subr->doc = (CONST char *)newsubr; \ + subr->doc = (const char *)newsubr; \ subr = newsubr; \ } \ } while (0) @@ -3287,12 +3392,15 @@ XSYMBOL (sym)->function = Fcons (Qmacro, fun); } -void -deferror (Lisp_Object *symbol, CONST char *name, CONST char *messuhhj, - Lisp_Object inherits_from) +static void +deferror_1 (Lisp_Object *symbol, const char *name, const char *messuhhj, + Lisp_Object inherits_from, int massage_p) { Lisp_Object conds; - defsymbol (symbol, name); + if (massage_p) + defsymbol_massage_name (symbol, name); + else + defsymbol (symbol, name); assert (SYMBOLP (inherits_from)); conds = Fget (inherits_from, Qerror_conditions, Qnil); @@ -3304,47 +3412,79 @@ } void +deferror (Lisp_Object *symbol, const char *name, const char *messuhhj, + Lisp_Object inherits_from) +{ + deferror_1 (symbol, name, messuhhj, inherits_from, 0); +} + +void +deferror_massage_name (Lisp_Object *symbol, const char *name, + const char *messuhhj, Lisp_Object inherits_from) +{ + deferror_1 (symbol, name, messuhhj, inherits_from, 1); +} + +void +deferror_massage_name_and_message (Lisp_Object *symbol, const char *name, + Lisp_Object inherits_from) +{ + char temp[500]; + int i; + int len = strlen (name) - 1; + + assert (len < sizeof (temp)); + strcpy (temp, name + 1); /* Remove initial Q */ + temp[0] = toupper (temp[0]); + for (i = 0; i < len; i++) + if (temp[i] == '_') + temp[i] = ' '; + + deferror_1 (symbol, name, temp, inherits_from, 1); +} + +void syms_of_symbols (void) { - defsymbol (&Qvariable_documentation, "variable-documentation"); - defsymbol (&Qvariable_domain, "variable-domain"); /* I18N3 */ - defsymbol (&Qad_advice_info, "ad-advice-info"); - defsymbol (&Qad_activate, "ad-activate"); - - defsymbol (&Qget_value, "get-value"); - defsymbol (&Qset_value, "set-value"); - defsymbol (&Qbound_predicate, "bound-predicate"); - defsymbol (&Qmake_unbound, "make-unbound"); - defsymbol (&Qlocal_predicate, "local-predicate"); - defsymbol (&Qmake_local, "make-local"); - - defsymbol (&Qboundp, "boundp"); - defsymbol (&Qglobally_boundp, "globally-boundp"); - defsymbol (&Qmakunbound, "makunbound"); - defsymbol (&Qsymbol_value, "symbol-value"); - defsymbol (&Qset, "set"); - defsymbol (&Qsetq_default, "setq-default"); - defsymbol (&Qdefault_boundp, "default-boundp"); - defsymbol (&Qdefault_value, "default-value"); - defsymbol (&Qset_default, "set-default"); - defsymbol (&Qmake_variable_buffer_local, "make-variable-buffer-local"); - defsymbol (&Qmake_local_variable, "make-local-variable"); - defsymbol (&Qkill_local_variable, "kill-local-variable"); - defsymbol (&Qkill_console_local_variable, "kill-console-local-variable"); - defsymbol (&Qsymbol_value_in_buffer, "symbol-value-in-buffer"); - defsymbol (&Qsymbol_value_in_console, "symbol-value-in-console"); - defsymbol (&Qlocal_variable_p, "local-variable-p"); - - defsymbol (&Qconst_integer, "const-integer"); - defsymbol (&Qconst_boolean, "const-boolean"); - defsymbol (&Qconst_object, "const-object"); - defsymbol (&Qconst_specifier, "const-specifier"); - defsymbol (&Qdefault_buffer, "default-buffer"); - defsymbol (&Qcurrent_buffer, "current-buffer"); - defsymbol (&Qconst_current_buffer, "const-current-buffer"); - defsymbol (&Qdefault_console, "default-console"); - defsymbol (&Qselected_console, "selected-console"); - defsymbol (&Qconst_selected_console, "const-selected-console"); + DEFSYMBOL (Qvariable_documentation); + DEFSYMBOL (Qvariable_domain); /* I18N3 */ + DEFSYMBOL (Qad_advice_info); + DEFSYMBOL (Qad_activate); + + DEFSYMBOL (Qget_value); + DEFSYMBOL (Qset_value); + DEFSYMBOL (Qbound_predicate); + DEFSYMBOL (Qmake_unbound); + DEFSYMBOL (Qlocal_predicate); + DEFSYMBOL (Qmake_local); + + DEFSYMBOL (Qboundp); + DEFSYMBOL (Qglobally_boundp); + DEFSYMBOL (Qmakunbound); + DEFSYMBOL (Qsymbol_value); + DEFSYMBOL (Qset); + DEFSYMBOL (Qsetq_default); + DEFSYMBOL (Qdefault_boundp); + DEFSYMBOL (Qdefault_value); + DEFSYMBOL (Qset_default); + DEFSYMBOL (Qmake_variable_buffer_local); + DEFSYMBOL (Qmake_local_variable); + DEFSYMBOL (Qkill_local_variable); + DEFSYMBOL (Qkill_console_local_variable); + DEFSYMBOL (Qsymbol_value_in_buffer); + DEFSYMBOL (Qsymbol_value_in_console); + DEFSYMBOL (Qlocal_variable_p); + + DEFSYMBOL (Qconst_integer); + DEFSYMBOL (Qconst_boolean); + DEFSYMBOL (Qconst_object); + DEFSYMBOL (Qconst_specifier); + DEFSYMBOL (Qdefault_buffer); + DEFSYMBOL (Qcurrent_buffer); + DEFSYMBOL (Qconst_current_buffer); + DEFSYMBOL (Qdefault_console); + DEFSYMBOL (Qselected_console); + DEFSYMBOL (Qconst_selected_console); DEFSUBR (Fintern); DEFSUBR (Fintern_soft); @@ -3386,21 +3526,9 @@ /* Create and initialize a Lisp variable whose value is forwarded to C data */ void -defvar_magic (CONST char *symbol_name, CONST struct symbol_value_forward *magic) +defvar_magic (const char *symbol_name, const struct symbol_value_forward *magic) { - Lisp_Object sym, kludge; - - /* Check that `magic' points somewhere we can represent as a Lisp pointer */ - XSETOBJ (kludge, Lisp_Type_Record, magic); - if ((void *)magic != (void*) XPNTR (kludge)) - { - /* This might happen on DATA_SEG_BITS machines. */ - /* abort (); */ - /* Copy it to somewhere which is representable. */ - struct symbol_value_forward *p = xnew (struct symbol_value_forward); - memcpy (p, magic, sizeof *magic); - magic = p; - } + Lisp_Object sym; #if defined(HAVE_SHLIB) /* @@ -3412,10 +3540,10 @@ sym = Fintern (build_string (symbol_name), Qnil); else #endif - sym = Fintern (make_string_nocopy ((CONST Bufbyte *) symbol_name, + sym = Fintern (make_string_nocopy ((const Bufbyte *) symbol_name, strlen (symbol_name)), Qnil); - XSETOBJ (XSYMBOL (sym)->value, Lisp_Type_Record, magic); + XSETOBJ (XSYMBOL (sym)->value, magic); } void