• Paul Eggert's avatar
    Compute C decls for DEFSYMs automatically · 58f2d6ef
    Paul Eggert authored
    Fixes Bug#15880.
    This patch also makes Q constants (e.g., Qnil) constant addresses
    from the C point of view.
    * make-docfile.c: Revamp to generate table of symbols, too.
    Include <stdbool.h>.
    (xstrdup): New function.
    (main): Don't process the same file twice.
    (SYMBOL): New constant in enum global_type.
    (struct symbol): Turn 'value' member into a union, either v.value
    for int or v.svalue for string.  All uses changed.
    (add_global): New arg svalue, which overrides value, so that globals
    can have a string value.
    (close_emacs_global): New arg num_symbols; all uses changed.
    Output lispsym decl.
    (write_globals): Output symbol globals too.  Output more
    ATTRIBUTE_CONST, now that Qnil etc. are C constants.
    Output defsym_name table.
    (scan_c_file): Move most of guts into ...
    (scan_c_stream): ... new function.  Scan for DEFSYMs and
    record symbols found.  Don't read past EOF if file doesn't
    end in newline.
    * alloc.c, bidi.c, buffer.c, bytecode.c, callint.c, casefiddle:
    * casetab.c, category.c, ccl.c, charset.c, chartab.c, cmds.c, coding.c:
    * composite.c, data.c, dbusbind.c, decompress.c, dired.c, dispnew.c:
    * doc.c, editfns.c, emacs.c, eval.c, fileio.c, fns.c, font.c, fontset.c:
    * frame.c, fringe.c, ftfont.c, ftxfont.c, gfilenotify.c, gnutls.c:
    * image.c, inotify.c, insdel.c, keyboard.c, keymap.c, lread.c:
    * macfont.m, macros.c, minibuf.c, nsfns.m, nsfont.m, nsimage.m:
    * nsmenu.m, nsselect.m, nsterm.m, print.c, process.c, profiler.c:
    * search.c, sound.c, syntax.c, term.c, terminal.c, textprop.c, undo.c:
    * window.c, xdisp.c, xfaces.c, xfns.c, xftfont.c, xmenu.c, xml.c:
    * xselect.c, xsettings.c, xterm.c:
    Remove Q vars that represent symbols (e.g., Qnil, Qt, Qemacs).
    These names are now defined automatically by make-docfile.
    * alloc.c (init_symbol): New function.
    (Fmake_symbol): Use it.
    (c_symbol_p): New function.
    (valid_lisp_object_p, purecopy): Use it.
    * alloc.c (marked_pinned_symbols):
    Use make_lisp_symbol instead of make_lisp_ptr.
    (garbage_collect_1): Mark lispsym symbols.
    (CHECK_ALLOCATED_AND_LIVE_SYMBOL): New macro.
    (mark_object): Use it.
    (sweep_symbols): Sweep lispsym symbols.
    (symbol_uses_obj): New function.
    (which_symbols): Use it.  Work for lispsym symbols, too.
    (init_alloc_once): Initialize Vpurify_flag here; no need to wait,
    since Qt's address is already known now.
    (syms_of_alloc): Add lispsym count to symbols_consed.
    * buffer.c (init_buffer_once): Compare to Qnil, not to make_number (0),
    when testing whether storage is all bits zero.
    * dispextern (struct image_type):
    * font.c (font_property_table):
    * frame.c (struct frame_parm_table, frame_parms):
    * keyboard.c (scroll_bar_parts, struct event_head):
    * xdisp.c (struct props):
    Use XSYMBOL_INIT (Qfoo) and struct Lisp_Symbol * rather than &Qfoo and
    Lisp_Object *, since Qfoo is no longer an object whose address can be
    taken.  All uses changed.
    * eval.c (run_hook): New function.  Most uses of Frun_hooks changed to
    use it, so that they no longer need to take the address of a Lisp sym.
    (syms_of_eval): Don't use DEFSYM on Vrun_hooks, as it's a variable.
    * frame.c (syms_of_frame): Add defsyms for the frame_parms table.
    * keyboard.c (syms_of_keyboard): Don't DEFSYM Qmenu_bar here.
    DEFSYM Qdeactivate_mark before the corresponding var.
    * keymap.c (syms_of_keymap): Use DEFSYM for Qmenu_bar and Qmode_line
    instead of interning their symbols; this avoids duplicates.
    (LISP_INITIALLY, TAG_PTR)
    (DEFINE_LISP_SYMBOL_BEGIN, DEFINE_LISP_SYMBOL_END, XSYMBOL_INIT):
    New macros.
    (LISP_INITIALLY_ZERO): Use it.
    (enum symbol_interned, enum symbol_redirect, struct Lisp_Symbol)
    (EXFUN, DEFUN_ARGS_MANY, DEFUN_ARGS_UNEVALLED, DEFUN_ARGS_*):
    Move decls up, to avoid forward uses.  Include globals.h earlier, too.
    (make_lisp_symbol): New function.
    (XSETSYMBOL): Use it.
    (DEFSYM): Now just a placeholder for make-docfile.
    * lread.c (DEFINE_SYMBOLS): Define, for globals.h.
    (intern_sym): New function, with body taken from old intern_driver.
    (intern_driver): Use it.  Last arg is now Lisp integer, not ptrdiff_t.
    All uses changed.
    (define_symbol): New function.
    (init_obarray): Define the C symbols taken from lispsym.
    Use plain DEFSYM for Qt and Qnil.
    * syntax.c (init_syntax_once): No need to worry about
    Qchar_table_extra_slots.
    58f2d6ef
font.h 30.6 KB