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 ********************************************************/
29 typedef bool (*IdentLookupFunc)(struct xkb_context *ctx, const void *priv,
30 xkb_atom_t field, unsigned type,
31 ExprResult *val_rtrn);
34 exprOpText(unsigned type)
40 strcpy(buf, "literal");
43 strcpy(buf, "identifier");
46 strcpy(buf, "action declaration");
49 strcpy(buf, "field reference");
52 strcpy(buf, "array reference");
55 strcpy(buf, "list of keysyms");
58 strcpy(buf, "list of actions");
61 strcpy(buf, "addition");
64 strcpy(buf, "subtraction");
67 strcpy(buf, "multiplication");
70 strcpy(buf, "division");
73 strcpy(buf, "assignment");
76 strcpy(buf, "logical not");
79 strcpy(buf, "arithmetic negation");
82 strcpy(buf, "bitwise inversion");
85 strcpy(buf, "unary plus");
88 snprintf(buf, sizeof(buf), "illegal(%d)", type);
95 exprTypeText(unsigned type)
101 strcpy(buf, "unknown");
104 strcpy(buf, "boolean");
110 strcpy(buf, "string");
113 strcpy(buf, "action");
116 strcpy(buf, "keyname");
119 snprintf(buf, sizeof(buf), "illegal(%d)", type);
126 ExprResolveLhs(struct xkb_keymap *keymap, ExprDef *expr,
127 ExprResult *elem_rtrn, ExprResult *field_rtrn,
128 ExprDef **index_rtrn)
130 struct xkb_context *ctx = keymap->ctx;
134 elem_rtrn->str = NULL;
135 field_rtrn->str = xkb_atom_text(ctx, expr->value.str);
139 elem_rtrn->str = xkb_atom_text(ctx, expr->value.field.element);
140 field_rtrn->str = xkb_atom_text(ctx, expr->value.field.field);
144 elem_rtrn->str = xkb_atom_text(ctx, expr->value.array.element);
145 field_rtrn->str = xkb_atom_text(ctx, expr->value.array.field);
146 *index_rtrn = expr->value.array.entry;
149 log_wsgo(keymap->ctx, "Unexpected operator %d in ResolveLhs\n", expr->op);
154 SimpleLookup(struct xkb_context *ctx, const void *priv,
155 xkb_atom_t field, unsigned type, ExprResult *val_rtrn)
157 const LookupEntry *entry;
160 if ((priv == NULL) || (field == XKB_ATOM_NONE) || (type != TypeInt))
163 str = xkb_atom_text(ctx, field);
164 for (entry = priv; (entry != NULL) && (entry->name != NULL); entry++) {
165 if (strcasecmp(str, entry->name) == 0) {
166 val_rtrn->uval = entry->result;
174 static const LookupEntry modIndexNames[] = {
175 { "shift", ShiftMapIndex },
176 { "control", ControlMapIndex },
177 { "lock", LockMapIndex },
178 { "mod1", Mod1MapIndex },
179 { "mod2", Mod2MapIndex },
180 { "mod3", Mod3MapIndex },
181 { "mod4", Mod4MapIndex },
182 { "mod5", Mod5MapIndex },
183 { "none", XkbNoModifier },
188 LookupModIndex(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
189 unsigned type, ExprResult *val_rtrn)
191 return SimpleLookup(ctx, modIndexNames, field, type, val_rtrn);
195 LookupModMask(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
196 unsigned type, ExprResult *val_rtrn)
203 str = xkb_atom_text(ctx, field);
206 if (strcasecmp(str, "all") == 0)
207 val_rtrn->uval = 0xff;
208 else if (strcasecmp(str, "none") == 0)
210 else if (LookupModIndex(ctx, priv, field, type, val_rtrn))
211 val_rtrn->uval = (1 << val_rtrn->uval);
218 ExprResolveBoolean(struct xkb_context *ctx, ExprDef *expr,
219 ExprResult *val_rtrn)
222 const char *bogus = NULL;
226 if (expr->type != TypeBoolean) {
228 "Found constant of type %s where boolean was expected\n",
229 exprTypeText(expr->type));
232 val_rtrn->ival = expr->value.ival;
236 bogus = xkb_atom_text(ctx, expr->value.str);
238 if ((strcasecmp(bogus, "true") == 0) ||
239 (strcasecmp(bogus, "yes") == 0) ||
240 (strcasecmp(bogus, "on") == 0)) {
244 else if ((strcasecmp(bogus, "false") == 0) ||
245 (strcasecmp(bogus, "no") == 0) ||
246 (strcasecmp(bogus, "off") == 0)) {
251 log_err(ctx, "Identifier \"%s\" of type int is unknown\n",
252 xkb_atom_text(ctx, expr->value.str));
256 log_err(ctx, "Default \"%s.%s\" of type boolean is unknown\n",
257 xkb_atom_text(ctx, expr->value.field.element),
258 xkb_atom_text(ctx, expr->value.field.field));
263 ok = ExprResolveBoolean(ctx, expr, val_rtrn);
265 val_rtrn->uval = !val_rtrn->uval;
274 log_err(ctx, "%s of boolean values not permitted\n",
275 exprOpText(expr->op));
279 log_wsgo(ctx, "Unknown operator %d in ResolveBoolean\n", expr->op);
286 ExprResolveKeyCode(struct xkb_context *ctx, ExprDef *expr,
287 ExprResult *val_rtrn)
289 ExprResult leftRtrn, rightRtrn;
290 ExprDef *left, *right;
294 if (expr->type != TypeInt) {
296 "Found constant of type %s where an int was expected\n",
297 exprTypeText(expr->type));
300 val_rtrn->uval = expr->value.uval;
307 left = expr->value.binary.left;
308 right = expr->value.binary.right;
309 if (ExprResolveKeyCode(ctx, left, &leftRtrn) &&
310 ExprResolveKeyCode(ctx, right, &rightRtrn)) {
313 val_rtrn->uval = leftRtrn.uval + rightRtrn.uval;
316 val_rtrn->uval = leftRtrn.uval - rightRtrn.uval;
319 val_rtrn->uval = leftRtrn.uval * rightRtrn.uval;
322 if (rightRtrn.uval == 0) {
323 log_err(ctx, "Cannot divide by zero: %d / %d\n",
324 leftRtrn.uval, rightRtrn.uval);
327 val_rtrn->uval = leftRtrn.uval / rightRtrn.uval;
335 left = expr->value.child;
336 if (ExprResolveKeyCode(ctx, left, &leftRtrn)) {
337 val_rtrn->uval = ~leftRtrn.uval;
343 left = expr->value.child;
344 return ExprResolveKeyCode(ctx, left, val_rtrn);
347 log_wsgo(ctx, "Unknown operator %d in ResolveKeyCode\n", expr->op);
354 * This function returns ... something. It's a bit of a guess, really.
356 * If a string is given in value ctx, its first character will be
357 * returned in uval. If an integer is given in value ctx, it will be
358 * returned in ival. If a float is given in value ctx, it will be
359 * returned as millimetres (rather than points) in ival.
361 * If an ident or field reference is given, the lookup function (if given)
362 * will be called. At the moment, only SimpleLookup use this, and they both
363 * return the results in uval. And don't support field references.
368 ExprResolveIntegerLookup(struct xkb_context *ctx, ExprDef *expr,
369 ExprResult *val_rtrn, IdentLookupFunc lookup,
370 const void *lookupPriv)
373 ExprResult leftRtrn, rightRtrn;
374 ExprDef *left, *right;
378 if (expr->type == TypeString) {
380 str = xkb_atom_text(ctx, expr->value.str);
382 switch (strlen(str)) {
387 val_rtrn->uval = str[0];
393 if (expr->type != TypeInt) {
395 "Found constant of type %s where an int was expected\n",
396 exprTypeText(expr->type));
399 val_rtrn->ival = expr->value.ival;
404 ok = lookup(ctx, lookupPriv, expr->value.str,
407 log_err(ctx, "Identifier \"%s\" of type int is unknown\n",
408 xkb_atom_text(ctx, expr->value.str));
412 log_err(ctx, "Default \"%s.%s\" of type int is unknown\n",
413 xkb_atom_text(ctx, expr->value.field.element),
414 xkb_atom_text(ctx, expr->value.field.field));
421 left = expr->value.binary.left;
422 right = expr->value.binary.right;
423 if (ExprResolveIntegerLookup(ctx, left, &leftRtrn, lookup,
425 ExprResolveIntegerLookup(ctx, right, &rightRtrn, lookup,
429 val_rtrn->ival = leftRtrn.ival + rightRtrn.ival;
432 val_rtrn->ival = leftRtrn.ival - rightRtrn.ival;
435 val_rtrn->ival = leftRtrn.ival * rightRtrn.ival;
438 if (rightRtrn.ival == 0) {
439 log_err(ctx, "Cannot divide by zero: %d / %d\n",
440 leftRtrn.ival, rightRtrn.ival);
443 val_rtrn->ival = leftRtrn.ival / rightRtrn.ival;
451 log_wsgo(ctx, "Assignment operator not implemented yet\n");
455 log_err(ctx, "The ! operator cannot be applied to an integer\n");
460 left = expr->value.child;
461 if (ExprResolveIntegerLookup(ctx, left, &leftRtrn, lookup,
463 if (expr->op == OpNegate)
464 val_rtrn->ival = -leftRtrn.ival;
466 val_rtrn->ival = ~leftRtrn.ival;
472 left = expr->value.child;
473 return ExprResolveIntegerLookup(ctx, left, val_rtrn, lookup,
477 log_wsgo(ctx, "Unknown operator %d in ResolveInteger\n", expr->op);
484 ExprResolveInteger(struct xkb_context *ctx, ExprDef *expr,
485 ExprResult *val_rtrn)
487 return ExprResolveIntegerLookup(ctx, expr, val_rtrn, NULL, NULL);
491 ExprResolveGroup(struct xkb_context *ctx, ExprDef *expr,
492 ExprResult *val_rtrn)
495 static const LookupEntry group_names[] = {
507 ret = ExprResolveIntegerLookup(ctx, expr, val_rtrn, SimpleLookup,
512 if (val_rtrn->uval == 0 || val_rtrn->uval > XkbNumKbdGroups) {
513 log_err(ctx, "Group index %u is out of range (1..%d)\n",
514 val_rtrn->uval, XkbNumKbdGroups);
522 ExprResolveLevel(struct xkb_context *ctx, ExprDef *expr,
523 ExprResult *val_rtrn)
526 static const LookupEntry level_names[] = {
538 ret = ExprResolveIntegerLookup(ctx, expr, val_rtrn, SimpleLookup,
543 if (val_rtrn->ival < 1 || val_rtrn->ival > XkbMaxShiftLevel) {
544 log_err(ctx, "Shift level %d is out of range (1..%d)\n",
545 val_rtrn->ival, XkbMaxShiftLevel);
553 ExprResolveButton(struct xkb_context *ctx, ExprDef *expr,
554 ExprResult *val_rtrn)
556 static const LookupEntry button_names[] = {
566 return ExprResolveIntegerLookup(ctx, expr, val_rtrn, SimpleLookup,
571 ExprResolveString(struct xkb_context *ctx, ExprDef *expr,
572 ExprResult *val_rtrn)
576 if (expr->type != TypeString) {
577 log_err(ctx, "Found constant of type %s, expected a string\n",
578 exprTypeText(expr->type));
581 val_rtrn->str = xkb_atom_text(ctx, expr->value.str);
585 log_err(ctx, "Identifier \"%s\" of type string not found\n",
586 xkb_atom_text(ctx, expr->value.str));
590 log_err(ctx, "Default \"%s.%s\" of type string not found\n",
591 xkb_atom_text(ctx, expr->value.field.element),
592 xkb_atom_text(ctx, expr->value.field.field));
604 log_err(ctx, "%s of strings not permitted\n", exprOpText(expr->op));
608 log_wsgo(ctx, "Unknown operator %d in ResolveString\n", expr->op);
615 ExprResolveKeyName(struct xkb_context *ctx, ExprDef *expr,
616 ExprResult *val_rtrn)
620 if (expr->type != TypeKeyName) {
621 log_err(ctx, "Found constant of type %s, expected a key name\n",
622 exprTypeText(expr->type));
625 memcpy(val_rtrn->name, expr->value.keyName, XkbKeyNameLength);
629 log_err(ctx, "Identifier \"%s\" of type string not found\n",
630 xkb_atom_text(ctx, expr->value.str));
634 log_err(ctx, "Default \"%s.%s\" of type key name not found\n",
635 xkb_atom_text(ctx, expr->value.field.element),
636 xkb_atom_text(ctx, expr->value.field.field));
648 log_err(ctx, "%s of key name values not permitted\n",
649 exprOpText(expr->op));
653 log_wsgo(ctx, "Unknown operator %d in ResolveKeyName\n", expr->op);
659 /***====================================================================***/
662 ExprResolveEnum(struct xkb_context *ctx, ExprDef *expr,
663 ExprResult *val_rtrn, const LookupEntry *values)
665 if (expr->op != ExprIdent) {
666 log_err(ctx, "Found a %s where an enumerated value was expected\n",
667 exprOpText(expr->op));
670 if (!SimpleLookup(ctx, values, expr->value.str, TypeInt, val_rtrn)) {
672 log_err(ctx, "Illegal identifier %s (expected one of: ",
673 xkb_atom_text(ctx, expr->value.str));
674 while (values && values->name)
677 log_info(ctx, ", %s", values->name);
679 log_info(ctx, "%s", values->name);
683 log_info(ctx, ")\n");
690 ExprResolveMaskLookup(struct xkb_context *ctx, ExprDef *expr,
691 ExprResult *val_rtrn, IdentLookupFunc lookup,
692 const void *lookupPriv)
695 ExprResult leftRtrn, rightRtrn;
696 ExprDef *left, *right;
697 const char *bogus = NULL;
701 if (expr->type != TypeInt) {
703 "Found constant of type %s where a mask was expected\n",
704 exprTypeText(expr->type));
707 val_rtrn->ival = expr->value.ival;
711 ok = lookup(ctx, lookupPriv, expr->value.str, TypeInt, val_rtrn);
713 log_err(ctx, "Identifier \"%s\" of type int is unknown\n",
714 xkb_atom_text(ctx, expr->value.str));
718 log_err(ctx, "Default \"%s.%s\" of type int is unknown\n",
719 xkb_atom_text(ctx, expr->value.field.element),
720 xkb_atom_text(ctx, expr->value.field.field));
724 bogus = "array reference";
728 bogus = "function use";
730 "Unexpected %s in mask expression; Expression Ignored\n",
738 left = expr->value.binary.left;
739 right = expr->value.binary.right;
740 if (ExprResolveMaskLookup(ctx, left, &leftRtrn, lookup,
742 ExprResolveMaskLookup(ctx, right, &rightRtrn, lookup,
746 val_rtrn->ival = leftRtrn.ival | rightRtrn.ival;
749 val_rtrn->ival = leftRtrn.ival & (~rightRtrn.ival);
753 log_err(ctx, "Cannot %s masks; Illegal operation ignored\n",
754 (expr->op == OpDivide ? "divide" : "multiply"));
762 log_wsgo(ctx, "Assignment operator not implemented yet\n");
766 left = expr->value.child;
767 if (ExprResolveIntegerLookup(ctx, left, &leftRtrn, lookup,
769 val_rtrn->ival = ~leftRtrn.ival;
777 left = expr->value.child;
778 if (ExprResolveIntegerLookup(ctx, left, &leftRtrn, lookup,
780 log_err(ctx, "The %s operator cannot be used with a mask\n",
781 (expr->op == OpNegate ? "-" : "!"));
786 log_wsgo(ctx, "Unknown operator %d in ResolveMask\n", expr->op);
793 ExprResolveMask(struct xkb_context *ctx, ExprDef *expr,
794 ExprResult *val_rtrn, const LookupEntry *values)
796 return ExprResolveMaskLookup(ctx, expr, val_rtrn, SimpleLookup, values);
800 ExprResolveModMask(struct xkb_context *ctx, ExprDef *expr,
801 ExprResult *val_rtrn)
803 return ExprResolveMaskLookup(ctx, expr, val_rtrn, LookupModMask, NULL);
807 ExprResolveVModMask(struct xkb_keymap *keymap, ExprDef *expr,
808 ExprResult *val_rtrn)
810 return ExprResolveMaskLookup(keymap->ctx, expr, val_rtrn, LookupVModMask,
815 ExprResolveKeySym(struct xkb_context *ctx, ExprDef *expr,
816 ExprResult *val_rtrn)
821 if (expr->op == ExprIdent) {
823 str = xkb_atom_text(ctx, expr->value.str);
825 sym = xkb_keysym_from_name(str);
826 if (sym != XKB_KEY_NoSymbol) {
827 val_rtrn->uval = sym;
832 ok = ExprResolveInteger(ctx, expr, val_rtrn);
833 if ((ok) && (val_rtrn->uval < 10))
834 val_rtrn->uval += '0';