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view src/gui.h @ 5566:4654c01af32b
Improve the implementation, documentation of #'labels, #'flet.
lisp/ChangeLog addition:
2011-09-07 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el:
* bytecomp.el (for-effect): Move this earlier in the file, it's
referenced in byte-compile-initial-macro-environment.
* bytecomp.el (byte-compile-initial-macro-environment):
In the byte-compile-macro-environment definition for #'labels, put
off the compiling the lambda bodies until the point where the rest
of the form is being compiled, allowing the lambda bodies to
access appropriate values for byte-compile-bound-variables, and
reducing excessive warning about free variables.
Add a byte-compile-macro-environment definition for #'flet. This
modifies byte-compile-function-environment appropriately, and
warns about bindings of functions that have macro definitions in
the current environment, about functions that have byte codes, and
about functions that have byte-compile methods (which may not do
what the user wants at runtime).
* bytecomp.el (byte-compile-funcall):
If FUNCTION is constant, call #'byte-compile-callargs-warn if
that's appropriate, giving warnings about problems with calling
functions bound with #'labels.
* cl-macs.el:
* cl-macs.el (flet):
Mention the main difference from Common Lisp, that the bindings
are dynamic, not lexical. Counsel the use of #'labels, not #'flet,
for this and other reasons. Explain the limited single use case for
#'flet. Cross-reference to bytecomp.el in a comment.
* cl-macs.el (labels):
Go into detail on which functions may be called from
where. Explain how to access the function definition of a label
within FORM. Add a comment cross-referencing to bytecomp.el.
man/ChangeLog addition:
2011-09-07 Aidan Kehoe <kehoea@parhasard.net>
* cl.texi (Function Bindings):
Move #'labels first, describe it in more detail, explaining that
it is to be preferred over #'flet, and explaining why.
Explain that dynamic bindings with #'flet will also not work when
functions are accessed through their bytecodes.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Wed, 07 Sep 2011 16:26:45 +0100 |
| parents | 308d34e9f07d |
| children |
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/* Generic GUI code. (menubars, scrollbars, toolbars, dialogs) Copyright (C) 1995 Board of Trustees, University of Illinois. Copyright (C) 1995, 1996, 2002 Ben Wing. Copyright (C) 1995 Sun Microsystems, Inc. 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. */ /* Written by kkm on 12/24/97 */ #ifndef INCLUDED_gui_h_ #define INCLUDED_gui_h_ int separator_string_p (const Ibyte *s); void get_gui_callback (Lisp_Object, Lisp_Object *, Lisp_Object *); int gui_item_equal_sans_selected (Lisp_Object obj1, Lisp_Object obj2, int depth); extern int popup_up_p; /************************************************************************/ /* Image Instance Object */ /************************************************************************/ /* This structure describes gui button, menu item or submenu properties */ struct Lisp_Gui_Item { NORMAL_LISP_OBJECT_HEADER header; Lisp_Object name; /* String */ Lisp_Object callback; /* Symbol or form */ Lisp_Object callback_ex; /* Form taking context arguments */ Lisp_Object suffix; /* String */ Lisp_Object active; /* Form */ Lisp_Object included; /* Form */ Lisp_Object config; /* Anything EQable */ Lisp_Object filter; /* Form */ Lisp_Object style; /* Symbol */ Lisp_Object selected; /* Form */ Lisp_Object keys; /* String */ Lisp_Object accelerator; /* Char or Symbol */ Lisp_Object value; /* Anything you like */ }; DECLARE_LISP_OBJECT (gui_item, Lisp_Gui_Item); #define XGUI_ITEM(x) XRECORD (x, gui_item, Lisp_Gui_Item) #define wrap_gui_item(p) wrap_record (p, gui_item) #define GUI_ITEMP(x) RECORDP (x, gui_item) #define CHECK_GUI_ITEM(x) CHECK_RECORD (x, gui_item) #define CONCHECK_GUI_ITEM(x) CONCHECK_RECORD (x, gui_item) int update_gui_item_keywords (Lisp_Object gui_item, Lisp_Object item); Lisp_Object copy_gui_item (Lisp_Object gui_item); Lisp_Object widget_gui_parse_item_keywords (Lisp_Object item); int gui_item_add_keyval_pair (Lisp_Object gui_item, Lisp_Object key, Lisp_Object val, Error_Behavior errb); Lisp_Object gui_parse_item_keywords (Lisp_Object item); Lisp_Object gui_parse_item_keywords_no_errors (Lisp_Object item); void gui_add_item_keywords_to_plist (Lisp_Object plist, Lisp_Object gui_item); int gui_item_active_p (Lisp_Object); int gui_item_selected_p (Lisp_Object); Lisp_Object gui_item_list_find_selected (Lisp_Object gui_item_list); int gui_item_included_p (Lisp_Object, Lisp_Object into); Lisp_Object gui_item_accelerator (Lisp_Object gui_item); Lisp_Object gui_name_accelerator (Lisp_Object name); int gui_item_id_hash (Lisp_Object, Lisp_Object gui_item, int); Lisp_Object gui_item_display_flush_left (Lisp_Object gui_item); Lisp_Object gui_item_display_flush_right (Lisp_Object gui_item); Lisp_Object allocate_gui_item (void); void gui_item_init (Lisp_Object gui_item); Lisp_Object parse_gui_item_tree_children (Lisp_Object list); Lisp_Object copy_gui_item_tree (Lisp_Object arg); extern Lisp_Object Qmenu_no_selection_hook, Qdelete_dialog_box_hook; /* this is mswindows biased but reasonably safe I think */ #define GUI_ITEM_ID_SLOTS 8 #define GUI_ITEM_ID_MIN(s) (s * 0x2000) #define GUI_ITEM_ID_MAX(s) (0x1FFF + GUI_ITEM_ID_MIN (s)) #define GUI_ITEM_ID_BITS(x,s) (((x) & 0x1FFF) + GUI_ITEM_ID_MIN (s)) #define MAX_MENUITEM_LENGTH 128 #endif /* INCLUDED_gui_h_ */