+2010-04-20 Stefan Monnier <monnier@iro.umontreal.ca>
+
+ Make variable forwarding explicit rather the using special values.
+ Basically, this makes the structure of buffer-local values and object
+ forwarding explicit in the type of Lisp_Symbols rather than use
+ special Lisp_Objects for that. This tends to lead to slightly more
+ verbose code, but is more C-like, simpler, and makes it easier to make
+ sure we handled all cases, among other things by letting the compiler
+ help us check it.
+ * lisp.h (enum Lisp_Misc_Type, union Lisp_Misc):
+ Removing forwarding objects.
+ (enum Lisp_Fwd_Type, enum symbol_redirect, union Lisp_Fwd): New types.
+ (struct Lisp_Symbol): Make the various forms of variable-forwarding
+ explicit rather than hiding them inside Lisp_Object "values".
+ (XFWDTYPE): New macro.
+ (XINTFWD, XBOOLFWD, XOBJFWD, XKBOARD_OBJFWD): Redefine.
+ (XBUFFER_LOCAL_VALUE): Remove.
+ (SYMBOL_VAL, SYMBOL_ALIAS, SYMBOL_BLV, SYMBOL_FWD, SET_SYMBOL_VAL)
+ (SET_SYMBOL_ALIAS, SET_SYMBOL_BLV, SET_SYMBOL_FWD): New macros.
+ (SYMBOL_VALUE, SET_SYMBOL_VALUE): Remove.
+ (struct Lisp_Intfwd, struct Lisp_Boolfwd, struct Lisp_Objfwd)
+ (struct Lisp_Buffer_Objfwd, struct Lisp_Kboard_Objfwd):
+ Remove the Lisp_Misc_* header.
+ (struct Lisp_Buffer_Local_Value): Redefine.
+ (BLV_FOUND, SET_BLV_FOUND, BLV_VALUE, SET_BLV_VALUE): New macros.
+ (struct Lisp_Misc_Any): Add filler to get the right size.
+ (struct Lisp_Free): Use struct Lisp_Misc_Any rather than struct
+ Lisp_Intfwd.
+ (DEFVAR_LISP, DEFVAR_LISP_NOPRO, DEFVAR_BOOL, DEFVAR_INT)
+ (DEFVAR_KBOARD): Allocate a forwarding object.
+ * data.c (do_blv_forwarding, store_blv_forwarding): New macros.
+ (let_shadows_global_binding_p): New function.
+ (union Lisp_Val_Fwd): New type.
+ (make_blv): New function.
+ (swap_in_symval_forwarding, indirect_variable, do_symval_forwarding)
+ (store_symval_forwarding, swap_in_global_binding, Fboundp)
+ (swap_in_symval_forwarding, find_symbol_value, Fset)
+ (let_shadows_buffer_binding_p, set_internal, default_value)
+ (Fset_default, Fmake_variable_buffer_local, Fmake_local_variable)
+ (Fkill_local_variable, Fmake_variable_frame_local)
+ (Flocal_variable_p, Flocal_variable_if_set_p)
+ (Fvariable_binding_locus):
+ * xdisp.c (select_frame_for_redisplay):
+ * lread.c (Fintern, Funintern, init_obarray, defvar_int)
+ (defvar_bool, defvar_lisp_nopro, defvar_lisp, defvar_kboard):
+ * frame.c (store_frame_param):
+ * eval.c (Fdefvaralias, Fuser_variable_p, specbind, unbind_to):
+ * bytecode.c (Fbyte_code) <varref, varset>: Adapt to the new symbol
+ value structure.
+ * buffer.c (PER_BUFFER_SYMBOL): Move from buffer.h.
+ (clone_per_buffer_values): Only adjust markers into the current buffer.
+ (reset_buffer_local_variables): PER_BUFFER_IDX is never -2.
+ (Fbuffer_local_value, set_buffer_internal_1)
+ (swap_out_buffer_local_variables):
+ Adapt to the new symbol value structure.
+ (DEFVAR_PER_BUFFER): Allocate a Lisp_Buffer_Objfwd object.
+ (defvar_per_buffer): Take a new arg for the fwd object.
+ (buffer_lisp_local_variables): Return a proper alist (different fix
+ for bug#4138).
+ * alloc.c (Fmake_symbol): Use SET_SYMBOL_VAL.
+ (Fgarbage_collect): Don't handle buffer_defaults specially.
+ (mark_object): Handle new symbol value structure rather than the old
+ special Lisp_Misc_* objects.
+ (gc_sweep) <symbols>: Free also the buffer-local-value objects.
+ * term.c (set_tty_color_mode):
+ * bidi.c (bidi_initialize): Don't access the ->value field directly.
+ * buffer.h (PER_BUFFER_VAR_OFFSET): Don't bother with
+ a buffer_local_flags.
+ * print.c (print_object): Get rid of impossible forwarding objects.
+
2010-04-19 Eli Zaretskii <eliz@gnu.org>
* bidi.c (bidi_get_type, bidi_get_category)
(bidi_at_paragraph_end, bidi_resolve_weak, bidi_resolve_neutral)
- (bidi_type_of_next_char, bidi_level_of_next_char): Declare
- static. Use `INLINE' rather than `inline'.
+ (bidi_type_of_next_char, bidi_level_of_next_char):
+ Declare static. Use `INLINE' rather than `inline'.
2010-04-19 Juanma Barranquero <lekktu@gmail.com>
HCoop / bpt / emacs.git / blobdiff