1 /************************************************************
2 * Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.
4 * Permission to use, copy, modify, and distribute this
5 * software and its documentation for any purpose and without
6 * fee is hereby granted, provided that the above copyright
7 * notice appear in all copies and that both that copyright
8 * notice and this permission notice appear in supporting
9 * documentation, and that the name of Silicon Graphics not be
10 * used in advertising or publicity pertaining to distribution
11 * of the software without specific prior written permission.
12 * Silicon Graphics makes no representation about the suitability
13 * of this software for any purpose. It is provided "as is"
14 * without any express or implied warranty.
16 * SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
17 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
18 * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
19 * GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
20 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
22 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
23 * THE USE OR PERFORMANCE OF THIS SOFTWARE.
25 ********************************************************/
28 * Copyright © 2012 Intel Corporation
29 * Copyright © 2012 Ran Benita <ran234@gmail.com>
31 * Permission is hereby granted, free of charge, to any person obtaining a
32 * copy of this software and associated documentation files (the "Software"),
33 * to deal in the Software without restriction, including without limitation
34 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
35 * and/or sell copies of the Software, and to permit persons to whom the
36 * Software is furnished to do so, subject to the following conditions:
38 * The above copyright notice and this permission notice (including the next
39 * paragraph) shall be included in all copies or substantial portions of the
42 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
43 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
44 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
45 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
46 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
47 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
48 * DEALINGS IN THE SOFTWARE.
50 * Author: Daniel Stone <daniel@fooishbar.org>
51 * Ran Benita <ran234@gmail.com>
54 #include "xkbcomp-priv.h"
59 static const ExprBoolean constTrue = {
61 .common = { .type = STMT_EXPR, .next = NULL },
63 .value_type = EXPR_TYPE_BOOLEAN,
68 static const ExprBoolean constFalse = {
70 .common = { .type = STMT_EXPR, .next = NULL },
72 .value_type = EXPR_TYPE_BOOLEAN,
78 ACTION_FIELD_CLEAR_LOCKS,
79 ACTION_FIELD_LATCH_TO_LOCK,
80 ACTION_FIELD_GEN_KEY_EVENT,
84 ACTION_FIELD_INCREMENT,
85 ACTION_FIELD_MODIFIERS,
92 ACTION_FIELD_CONTROLS,
100 ACTION_FIELD_MODS_TO_CLEAR,
109 info = calloc(1, sizeof(*info));
113 for (type = 0; type < _ACTION_TYPE_NUM_ENTRIES; type++)
114 info->actions[type].type = type;
116 /* Apply some "factory defaults". */
118 /* Increment default button. */
119 info->actions[ACTION_TYPE_PTR_DEFAULT].dflt.flags = 0;
120 info->actions[ACTION_TYPE_PTR_DEFAULT].dflt.value = 1;
126 FreeActionsInfo(ActionsInfo *info)
131 static const LookupEntry fieldStrings[] = {
132 { "clearLocks", ACTION_FIELD_CLEAR_LOCKS },
133 { "latchToLock", ACTION_FIELD_LATCH_TO_LOCK },
134 { "genKeyEvent", ACTION_FIELD_GEN_KEY_EVENT },
135 { "generateKeyEvent", ACTION_FIELD_GEN_KEY_EVENT },
136 { "report", ACTION_FIELD_REPORT },
137 { "default", ACTION_FIELD_DEFAULT },
138 { "affect", ACTION_FIELD_AFFECT },
139 { "increment", ACTION_FIELD_INCREMENT },
140 { "modifiers", ACTION_FIELD_MODIFIERS },
141 { "mods", ACTION_FIELD_MODIFIERS },
142 { "group", ACTION_FIELD_GROUP },
143 { "x", ACTION_FIELD_X },
144 { "y", ACTION_FIELD_Y },
145 { "accel", ACTION_FIELD_ACCEL },
146 { "accelerate", ACTION_FIELD_ACCEL },
147 { "repeat", ACTION_FIELD_ACCEL },
148 { "button", ACTION_FIELD_BUTTON },
149 { "value", ACTION_FIELD_VALUE },
150 { "controls", ACTION_FIELD_CONTROLS },
151 { "ctrls", ACTION_FIELD_CONTROLS },
152 { "type", ACTION_FIELD_TYPE },
153 { "count", ACTION_FIELD_COUNT },
154 { "screen", ACTION_FIELD_SCREEN },
155 { "same", ACTION_FIELD_SAME },
156 { "sameServer", ACTION_FIELD_SAME },
157 { "data", ACTION_FIELD_DATA },
158 { "device", ACTION_FIELD_DEVICE },
159 { "dev", ACTION_FIELD_DEVICE },
160 { "key", ACTION_FIELD_KEYCODE },
161 { "keycode", ACTION_FIELD_KEYCODE },
162 { "kc", ACTION_FIELD_KEYCODE },
163 { "clearmods", ACTION_FIELD_MODS_TO_CLEAR },
164 { "clearmodifiers", ACTION_FIELD_MODS_TO_CLEAR },
169 stringToAction(const char *str, unsigned *type_rtrn)
171 return LookupString(actionTypeNames, str, type_rtrn);
175 stringToField(const char *str, enum action_field *field_rtrn)
177 return LookupString(fieldStrings, str, field_rtrn);
181 fieldText(enum action_field field)
183 return LookupValue(fieldStrings, field);
186 /***====================================================================***/
189 ReportMismatch(struct xkb_keymap *keymap, enum xkb_action_type action,
190 enum action_field field, const char *type)
193 "Value of %s field must be of type %s; "
194 "Action %s definition ignored\n",
195 fieldText(field), type, ActionTypeText(action));
200 ReportIllegal(struct xkb_keymap *keymap, enum xkb_action_type action,
201 enum action_field field)
204 "Field %s is not defined for an action of type %s; "
205 "Action definition ignored\n",
206 fieldText(field), ActionTypeText(action));
211 ReportActionNotArray(struct xkb_keymap *keymap, enum xkb_action_type action,
212 enum action_field field)
215 "The %s field in the %s action is not an array; "
216 "Action definition ignored\n",
217 fieldText(field), ActionTypeText(action));
222 HandleNoAction(struct xkb_keymap *keymap, union xkb_action *action,
223 enum action_field field, const ExprDef *array_ndx,
224 const ExprDef *value)
231 CheckLatchLockFlags(struct xkb_keymap *keymap, enum xkb_action_type action,
232 enum action_field field, const ExprDef *value,
233 enum xkb_action_flags *flags_inout)
235 enum xkb_action_flags tmp;
238 if (field == ACTION_FIELD_CLEAR_LOCKS)
239 tmp = ACTION_LOCK_CLEAR;
240 else if (field == ACTION_FIELD_LATCH_TO_LOCK)
241 tmp = ACTION_LATCH_TO_LOCK;
243 return false; /* WSGO! */
245 if (!ExprResolveBoolean(keymap->ctx, value, &result))
246 return ReportMismatch(keymap, action, field, "boolean");
251 *flags_inout &= ~tmp;
257 CheckModifierField(struct xkb_keymap *keymap, enum xkb_action_type action,
258 const ExprDef *value, enum xkb_action_flags *flags_inout,
259 xkb_mod_mask_t *mods_rtrn)
261 if (value->expr.op == EXPR_IDENT) {
263 valStr = xkb_atom_text(keymap->ctx, value->ident.ident);
264 if (valStr && (istreq(valStr, "usemodmapmods") ||
265 istreq(valStr, "modmapmods"))) {
268 *flags_inout |= ACTION_MODS_LOOKUP_MODMAP;
273 if (!ExprResolveModMask(keymap, value, MOD_BOTH, mods_rtrn))
274 return ReportMismatch(keymap, action,
275 ACTION_FIELD_MODIFIERS, "modifier mask");
277 *flags_inout &= ~ACTION_MODS_LOOKUP_MODMAP;
282 HandleSetLatchMods(struct xkb_keymap *keymap, union xkb_action *action,
283 enum action_field field, const ExprDef *array_ndx,
284 const ExprDef *value)
286 struct xkb_mod_action *act = &action->mods;
290 case ACTION_FIELD_CLEAR_LOCKS:
291 case ACTION_FIELD_LATCH_TO_LOCK:
292 case ACTION_FIELD_MODIFIERS:
293 return ReportActionNotArray(keymap, action->type, field);
300 case ACTION_FIELD_CLEAR_LOCKS:
301 case ACTION_FIELD_LATCH_TO_LOCK:
302 return CheckLatchLockFlags(keymap, action->type, field, value,
304 case ACTION_FIELD_MODIFIERS:
305 return CheckModifierField(keymap, action->type, value,
306 &act->flags, &act->mods.mods);
311 return ReportIllegal(keymap, action->type, field);
315 HandleLockMods(struct xkb_keymap *keymap, union xkb_action *action,
316 enum action_field field, const ExprDef *array_ndx,
317 const ExprDef *value)
319 struct xkb_mod_action *act = &action->mods;
321 if (array_ndx && field == ACTION_FIELD_MODIFIERS)
322 return ReportActionNotArray(keymap, action->type, field);
325 case ACTION_FIELD_MODIFIERS:
326 return CheckModifierField(keymap, action->type, value,
327 &act->flags, &act->mods.mods);
332 return ReportIllegal(keymap, action->type, field);
336 CheckGroupField(struct xkb_keymap *keymap, unsigned action,
337 const ExprDef *value, enum xkb_action_flags *flags_inout,
341 xkb_layout_index_t idx;
342 enum xkb_action_flags flags = *flags_inout;
344 if (value->expr.op == EXPR_NEGATE || value->expr.op == EXPR_UNARY_PLUS) {
345 flags &= ~ACTION_ABSOLUTE_SWITCH;
346 spec = value->unary.child;
349 flags |= ACTION_ABSOLUTE_SWITCH;
353 if (!ExprResolveGroup(keymap->ctx, spec, &idx))
354 return ReportMismatch(keymap, action, ACTION_FIELD_GROUP,
355 "integer (range 1..8)");
357 /* +n, -n are relative, n is absolute. */
358 if (value->expr.op == EXPR_NEGATE || value->expr.op == EXPR_UNARY_PLUS) {
359 *group_rtrn = (int32_t) idx;
360 if (value->expr.op == EXPR_NEGATE)
361 *group_rtrn = -*group_rtrn;
364 *group_rtrn = (int32_t) (idx - 1);
366 *flags_inout = flags;
371 HandleSetLatchGroup(struct xkb_keymap *keymap, union xkb_action *action,
372 enum action_field field, const ExprDef *array_ndx,
373 const ExprDef *value)
375 struct xkb_group_action *act = &action->group;
379 case ACTION_FIELD_CLEAR_LOCKS:
380 case ACTION_FIELD_LATCH_TO_LOCK:
381 case ACTION_FIELD_GROUP:
382 return ReportActionNotArray(keymap, action->type, field);
389 case ACTION_FIELD_CLEAR_LOCKS:
390 case ACTION_FIELD_LATCH_TO_LOCK:
391 return CheckLatchLockFlags(keymap, action->type, field, value,
393 case ACTION_FIELD_GROUP:
394 return CheckGroupField(keymap, action->type, value,
395 &act->flags, &act->group);
400 return ReportIllegal(keymap, action->type, field);
404 HandleLockGroup(struct xkb_keymap *keymap, union xkb_action *action,
405 enum action_field field, const ExprDef *array_ndx,
406 const ExprDef *value)
408 struct xkb_group_action *act = &action->group;
410 if (array_ndx && field == ACTION_FIELD_GROUP)
411 return ReportActionNotArray(keymap, action->type, field);
413 if (field == ACTION_FIELD_GROUP)
414 return CheckGroupField(keymap, action->type, value,
415 &act->flags, &act->group);
417 return ReportIllegal(keymap, action->type, field);
421 HandleMovePtr(struct xkb_keymap *keymap, union xkb_action *action,
422 enum action_field field, const ExprDef *array_ndx,
423 const ExprDef *value)
425 struct xkb_pointer_action *act = &action->ptr;
427 if (array_ndx && (field == ACTION_FIELD_X || field == ACTION_FIELD_Y))
428 return ReportActionNotArray(keymap, action->type, field);
430 if (field == ACTION_FIELD_X || field == ACTION_FIELD_Y) {
432 const bool absolute = (value->expr.op != EXPR_NEGATE &&
433 value->expr.op != EXPR_UNARY_PLUS);
435 if (!ExprResolveInteger(keymap->ctx, value, &val))
436 return ReportMismatch(keymap, action->type, field, "integer");
438 if (val < INT16_MIN || val > INT16_MAX) {
440 "The %s field in the %s action must be in range %d..%d; "
441 "Action definition ignored\n",
442 fieldText(field), ActionTypeText(action->type),
443 INT16_MIN, INT16_MAX);
447 if (field == ACTION_FIELD_X) {
449 act->flags |= ACTION_ABSOLUTE_X;
450 act->x = (int16_t) val;
454 act->flags |= ACTION_ABSOLUTE_Y;
455 act->y = (int16_t) val;
460 else if (field == ACTION_FIELD_ACCEL) {
463 if (!ExprResolveBoolean(keymap->ctx, value, &set))
464 return ReportMismatch(keymap, action->type, field, "boolean");
467 act->flags &= ~ACTION_NO_ACCEL;
469 act->flags |= ACTION_NO_ACCEL;
472 return ReportIllegal(keymap, action->type, field);
475 static const LookupEntry lockWhich[] = {
477 { "lock", ACTION_LOCK_NO_UNLOCK },
478 { "neither", (ACTION_LOCK_NO_LOCK | ACTION_LOCK_NO_UNLOCK) },
479 { "unlock", ACTION_LOCK_NO_LOCK },
484 HandlePtrBtn(struct xkb_keymap *keymap, union xkb_action *action,
485 enum action_field field, const ExprDef *array_ndx,
486 const ExprDef *value)
488 struct xkb_pointer_button_action *act = &action->btn;
490 if (field == ACTION_FIELD_BUTTON) {
494 return ReportActionNotArray(keymap, action->type, field);
496 if (!ExprResolveButton(keymap->ctx, value, &btn))
497 return ReportMismatch(keymap, action->type, field,
498 "integer (range 1..5)");
500 if (btn < 0 || btn > 5) {
502 "Button must specify default or be in the range 1..5; "
503 "Illegal button value %d ignored\n", btn);
510 else if (action->type == ACTION_TYPE_PTR_LOCK &&
511 field == ACTION_FIELD_AFFECT) {
512 enum xkb_action_flags val;
515 return ReportActionNotArray(keymap, action->type, field);
517 if (!ExprResolveEnum(keymap->ctx, value, &val, lockWhich))
518 return ReportMismatch(keymap, action->type, field,
521 act->flags &= ~(ACTION_LOCK_NO_LOCK | ACTION_LOCK_NO_UNLOCK);
525 else if (field == ACTION_FIELD_COUNT) {
529 return ReportActionNotArray(keymap, action->type, field);
531 if (!ExprResolveInteger(keymap->ctx, value, &val))
532 return ReportMismatch(keymap, action->type, field, "integer");
534 if (val < 0 || val > 255) {
536 "The count field must have a value in the range 0..255; "
537 "Illegal count %d ignored\n", val);
541 act->count = (uint8_t) val;
544 return ReportIllegal(keymap, action->type, field);
547 static const LookupEntry ptrDflts[] = {
549 { "defaultbutton", 1 },
555 HandleSetPtrDflt(struct xkb_keymap *keymap, union xkb_action *action,
556 enum action_field field, const ExprDef *array_ndx,
557 const ExprDef *value)
559 struct xkb_pointer_default_action *act = &action->dflt;
561 if (field == ACTION_FIELD_AFFECT) {
565 return ReportActionNotArray(keymap, action->type, field);
567 if (!ExprResolveEnum(keymap->ctx, value, &val, ptrDflts))
568 return ReportMismatch(keymap, action->type, field,
569 "pointer component");
572 else if (field == ACTION_FIELD_BUTTON || field == ACTION_FIELD_VALUE) {
573 const ExprDef *button;
577 return ReportActionNotArray(keymap, action->type, field);
579 if (value->expr.op == EXPR_NEGATE ||
580 value->expr.op == EXPR_UNARY_PLUS) {
581 act->flags &= ~ACTION_ABSOLUTE_SWITCH;
582 button = value->unary.child;
585 act->flags |= ACTION_ABSOLUTE_SWITCH;
589 if (!ExprResolveButton(keymap->ctx, button, &btn))
590 return ReportMismatch(keymap, action->type, field,
591 "integer (range 1..5)");
593 if (btn < 0 || btn > 5) {
595 "New default button value must be in the range 1..5; "
596 "Illegal default button value %d ignored\n", btn);
601 "Cannot set default pointer button to \"default\"; "
602 "Illegal default button setting ignored\n");
606 act->value = (value->expr.op == EXPR_NEGATE ? -btn: btn);
610 return ReportIllegal(keymap, action->type, field);
614 HandleSwitchScreen(struct xkb_keymap *keymap, union xkb_action *action,
615 enum action_field field, const ExprDef *array_ndx,
616 const ExprDef *value)
618 struct xkb_switch_screen_action *act = &action->screen;
620 if (field == ACTION_FIELD_SCREEN) {
625 return ReportActionNotArray(keymap, action->type, field);
627 if (value->expr.op == EXPR_NEGATE ||
628 value->expr.op == EXPR_UNARY_PLUS) {
629 act->flags &= ~ACTION_ABSOLUTE_SWITCH;
630 scrn = value->unary.child;
633 act->flags |= ACTION_ABSOLUTE_SWITCH;
637 if (!ExprResolveInteger(keymap->ctx, scrn, &val))
638 return ReportMismatch(keymap, action->type, field,
641 if (val < 0 || val > 255) {
643 "Screen index must be in the range 1..255; "
644 "Illegal screen value %d ignored\n", val);
648 act->screen = (value->expr.op == EXPR_NEGATE ? -val : val);
651 else if (field == ACTION_FIELD_SAME) {
655 return ReportActionNotArray(keymap, action->type, field);
657 if (!ExprResolveBoolean(keymap->ctx, value, &set))
658 return ReportMismatch(keymap, action->type, field, "boolean");
661 act->flags &= ~ACTION_SAME_SCREEN;
663 act->flags |= ACTION_SAME_SCREEN;
668 return ReportIllegal(keymap, action->type, field);
672 HandleSetLockControls(struct xkb_keymap *keymap, union xkb_action *action,
673 enum action_field field, const ExprDef *array_ndx,
674 const ExprDef *value)
676 struct xkb_controls_action *act = &action->ctrls;
678 if (field == ACTION_FIELD_CONTROLS) {
682 return ReportActionNotArray(keymap, action->type, field);
684 if (!ExprResolveMask(keymap->ctx, value, &mask, ctrlMaskNames))
685 return ReportMismatch(keymap, action->type, field,
692 return ReportIllegal(keymap, action->type, field);
696 HandlePrivate(struct xkb_keymap *keymap, union xkb_action *action,
697 enum action_field field, const ExprDef *array_ndx,
698 const ExprDef *value)
700 struct xkb_private_action *act = &action->priv;
702 if (field == ACTION_FIELD_TYPE) {
705 if (!ExprResolveInteger(keymap->ctx, value, &type))
706 return ReportMismatch(keymap, ACTION_TYPE_PRIVATE, field, "integer");
708 if (type < 0 || type > 255) {
710 "Private action type must be in the range 0..255; "
711 "Illegal type %d ignored\n", type);
716 * It's possible for someone to write something like this:
717 * actions = [ Private(type=3,data[0]=1,data[1]=3,data[2]=3) ]
718 * where the type refers to some existing action type, e.g. LockMods.
719 * This assumes that this action's struct is laid out in memory
720 * exactly as described in the XKB specification and libraries.
721 * We, however, have changed these structs in various ways, so this
722 * assumption is no longer true. Since this is a lousy "feature", we
723 * make actions like these no-ops for now.
725 if (type < ACTION_TYPE_PRIVATE) {
726 log_info(keymap->ctx,
727 "Private actions of type %s are not supported; Ignored\n",
728 ActionTypeText(type));
729 act->type = ACTION_TYPE_NONE;
732 act->type = (enum xkb_action_type) type;
737 else if (field == ACTION_FIELD_DATA) {
738 if (array_ndx == NULL) {
743 if (!ExprResolveString(keymap->ctx, value, &val))
744 return ReportMismatch(keymap, action->type, field, "string");
746 str = xkb_atom_text(keymap->ctx, val);
748 if (len < 1 || len > 7) {
749 log_warn(keymap->ctx,
750 "A private action has 7 data bytes; "
751 "Illegal data ignored\n");
755 strncpy((char *) act->data, str, sizeof(act->data));
761 if (!ExprResolveInteger(keymap->ctx, array_ndx, &ndx)) {
763 "Array subscript must be integer; "
764 "Illegal subscript ignored\n");
768 if (ndx < 0 || (size_t) ndx >= sizeof(act->data)) {
770 "The data for a private action is %lu bytes long; "
771 "Attempt to use data[%d] ignored\n",
772 (unsigned long) sizeof(act->data), ndx);
776 if (!ExprResolveInteger(keymap->ctx, value, &datum))
777 return ReportMismatch(keymap, act->type, field, "integer");
779 if (datum < 0 || datum > 255) {
781 "All data for a private action must be 0..255; "
782 "Illegal datum %d ignored\n", datum);
786 act->data[ndx] = (uint8_t) datum;
791 return ReportIllegal(keymap, ACTION_TYPE_NONE, field);
794 typedef bool (*actionHandler)(struct xkb_keymap *keymap,
795 union xkb_action *action,
796 enum action_field field,
797 const ExprDef *array_ndx,
798 const ExprDef *value);
800 static const actionHandler handleAction[_ACTION_TYPE_NUM_ENTRIES] = {
801 [ACTION_TYPE_NONE] = HandleNoAction,
802 [ACTION_TYPE_MOD_SET] = HandleSetLatchMods,
803 [ACTION_TYPE_MOD_LATCH] = HandleSetLatchMods,
804 [ACTION_TYPE_MOD_LOCK] = HandleLockMods,
805 [ACTION_TYPE_GROUP_SET] = HandleSetLatchGroup,
806 [ACTION_TYPE_GROUP_LATCH] = HandleSetLatchGroup,
807 [ACTION_TYPE_GROUP_LOCK] = HandleLockGroup,
808 [ACTION_TYPE_PTR_MOVE] = HandleMovePtr,
809 [ACTION_TYPE_PTR_BUTTON] = HandlePtrBtn,
810 [ACTION_TYPE_PTR_LOCK] = HandlePtrBtn,
811 [ACTION_TYPE_PTR_DEFAULT] = HandleSetPtrDflt,
812 [ACTION_TYPE_TERMINATE] = HandleNoAction,
813 [ACTION_TYPE_SWITCH_VT] = HandleSwitchScreen,
814 [ACTION_TYPE_CTRL_SET] = HandleSetLockControls,
815 [ACTION_TYPE_CTRL_LOCK] = HandleSetLockControls,
816 [ACTION_TYPE_PRIVATE] = HandlePrivate,
819 /***====================================================================***/
822 HandleActionDef(ExprDef *def, struct xkb_keymap *keymap,
823 union xkb_action *action, ActionsInfo *info)
827 unsigned handler_type;
829 if (def->expr.op != EXPR_ACTION_DECL) {
830 log_err(keymap->ctx, "Expected an action definition, found %s\n",
831 expr_op_type_to_string(def->expr.op));
835 str = xkb_atom_text(keymap->ctx, def->action.name);
836 if (!stringToAction(str, &handler_type)) {
837 log_err(keymap->ctx, "Unknown action %s\n", str);
842 * Get the default values for this action type, as modified by
843 * statements such as:
844 * latchMods.clearLocks = True;
846 *action = info->actions[handler_type];
849 * Now change the action properties as specified for this
850 * particular instance, e.g. "modifiers" and "clearLocks" in:
851 * SetMods(modifiers=Alt,clearLocks);
853 for (arg = def->action.args; arg != NULL;
854 arg = (ExprDef *) arg->common.next) {
855 const ExprDef *value;
856 ExprDef *field, *arrayRtrn;
857 const char *elemRtrn, *fieldRtrn;
858 enum action_field fieldNdx;
860 if (arg->expr.op == EXPR_ASSIGN) {
861 field = arg->binary.left;
862 value = arg->binary.right;
864 else if (arg->expr.op == EXPR_NOT || arg->expr.op == EXPR_INVERT) {
865 field = arg->unary.child;
866 value = (const ExprDef *) &constFalse;
870 value = (const ExprDef *) &constTrue;
873 if (!ExprResolveLhs(keymap->ctx, field, &elemRtrn, &fieldRtrn,
879 "Cannot change defaults in an action definition; "
880 "Ignoring attempt to change %s.%s\n",
881 elemRtrn, fieldRtrn);
885 if (!stringToField(fieldRtrn, &fieldNdx)) {
886 log_err(keymap->ctx, "Unknown field name %s\n", fieldRtrn);
890 if (!handleAction[handler_type](keymap, action, fieldNdx, arrayRtrn,
900 SetActionField(struct xkb_keymap *keymap, const char *elem, const char *field,
901 ExprDef *array_ndx, ExprDef *value, ActionsInfo *info)
904 enum action_field action_field;
906 if (!stringToAction(elem, &action))
909 if (!stringToField(field, &action_field)) {
910 log_err(keymap->ctx, "\"%s\" is not a legal field name\n", field);
914 return handleAction[action](keymap, &info->actions[action],
915 action_field, array_ndx, value);