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, enum expr_value_type type,
31 unsigned int *val_rtrn);
34 exprOpText(enum expr_op_type op)
40 strcpy(buf, "literal");
43 strcpy(buf, "identifier");
45 case EXPR_ACTION_DECL:
46 strcpy(buf, "action declaration");
49 strcpy(buf, "field reference");
52 strcpy(buf, "array reference");
54 case EXPR_KEYSYM_LIST:
55 strcpy(buf, "list of keysyms");
57 case EXPR_ACTION_LIST:
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)", op);
95 exprValueTypeText(enum expr_value_type type)
100 case EXPR_TYPE_UNKNOWN:
101 strcpy(buf, "unknown");
103 case EXPR_TYPE_BOOLEAN:
104 strcpy(buf, "boolean");
109 case EXPR_TYPE_STRING:
110 strcpy(buf, "string");
112 case EXPR_TYPE_ACTION:
113 strcpy(buf, "action");
115 case EXPR_TYPE_KEYNAME:
116 strcpy(buf, "keyname");
119 snprintf(buf, sizeof(buf), "illegal(%d)", type);
126 ExprResolveLhs(struct xkb_context *ctx, ExprDef *expr, const char **elem_rtrn,
127 const char **field_rtrn, ExprDef **index_rtrn)
132 *field_rtrn = xkb_atom_text(ctx, expr->value.str);
136 *elem_rtrn = xkb_atom_text(ctx, expr->value.field.element);
137 *field_rtrn = xkb_atom_text(ctx, expr->value.field.field);
141 *elem_rtrn = xkb_atom_text(ctx, expr->value.array.element);
142 *field_rtrn = xkb_atom_text(ctx, expr->value.array.field);
143 *index_rtrn = expr->value.array.entry;
148 log_wsgo(ctx, "Unexpected operator %d in ResolveLhs\n", expr->op);
153 SimpleLookup(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
154 enum expr_value_type type, unsigned int *val_rtrn)
156 const LookupEntry *entry;
159 if (!priv || field == XKB_ATOM_NONE || type != EXPR_TYPE_INT)
162 str = xkb_atom_text(ctx, field);
163 for (entry = priv; entry && entry->name; entry++) {
164 if (istreq(str, entry->name)) {
165 *val_rtrn = entry->value;
174 LookupModIndex(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
175 enum expr_value_type type, xkb_mod_index_t *val_rtrn)
177 const char *name = xkb_atom_text(ctx, field);
179 if (istreq(name, "none")) {
180 *val_rtrn = XkbNoModifier;
184 *val_rtrn = ModNameToIndex(name);
185 return (*val_rtrn != XKB_MOD_INVALID);
189 LookupModMask(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
190 enum expr_value_type type, xkb_mod_mask_t *val_rtrn)
195 if (type != EXPR_TYPE_INT)
198 str = xkb_atom_text(ctx, field);
200 if (istreq(str, "all"))
202 else if (istreq(str, "none"))
204 else if (LookupModIndex(ctx, priv, field, type, &ndx))
205 *val_rtrn = (1 << ndx);
213 ExprResolveBoolean(struct xkb_context *ctx, ExprDef *expr, bool *set_rtrn)
220 if (expr->value_type != EXPR_TYPE_BOOLEAN) {
222 "Found constant of type %s where boolean was expected\n",
223 exprValueTypeText(expr->value_type));
226 *set_rtrn = !!expr->value.ival;
230 ident = xkb_atom_text(ctx, expr->value.str);
232 if (istreq(ident, "true") ||
233 istreq(ident, "yes") ||
234 istreq(ident, "on")) {
238 else if (istreq(ident, "false") ||
239 istreq(ident, "no") ||
240 istreq(ident, "off")) {
245 log_err(ctx, "Identifier \"%s\" of type boolean is unknown\n",
246 xkb_atom_text(ctx, expr->value.str));
250 log_err(ctx, "Default \"%s.%s\" of type boolean is unknown\n",
251 xkb_atom_text(ctx, expr->value.field.element),
252 xkb_atom_text(ctx, expr->value.field.field));
257 ok = ExprResolveBoolean(ctx, expr, set_rtrn);
259 *set_rtrn = !*set_rtrn;
267 case EXPR_UNARY_PLUS:
268 log_err(ctx, "%s of boolean values not permitted\n",
269 exprOpText(expr->op));
273 log_wsgo(ctx, "Unknown operator %d in ResolveBoolean\n", expr->op);
281 ExprResolveKeyCode(struct xkb_context *ctx, ExprDef *expr, xkb_keycode_t *kc)
283 xkb_keycode_t leftRtrn, rightRtrn;
284 ExprDef *left, *right;
288 if (expr->value_type != EXPR_TYPE_INT) {
290 "Found constant of type %s where an int was expected\n",
291 exprValueTypeText(expr->value_type));
295 *kc = expr->value.uval;
302 left = expr->value.binary.left;
303 right = expr->value.binary.right;
305 if (!ExprResolveKeyCode(ctx, left, &leftRtrn) ||
306 !ExprResolveKeyCode(ctx, right, &rightRtrn))
311 *kc = leftRtrn + rightRtrn;
314 *kc = leftRtrn - rightRtrn;
317 *kc = leftRtrn * rightRtrn;
320 if (rightRtrn == 0) {
321 log_err(ctx, "Cannot divide by zero: %d / %d\n",
322 leftRtrn, rightRtrn);
326 *kc = leftRtrn / rightRtrn;
335 left = expr->value.child;
336 if (!ExprResolveKeyCode(ctx, left, &leftRtrn))
342 case EXPR_UNARY_PLUS:
343 left = expr->value.child;
344 return ExprResolveKeyCode(ctx, left, kc);
347 log_wsgo(ctx, "Unknown operator %d in ResolveKeyCode\n", expr->op);
355 * This function returns ... something. It's a bit of a guess, really.
357 * If an integer is given in value ctx, it will be returned in ival.
358 * If an ident or field reference is given, the lookup function (if given)
359 * will be called. At the moment, only SimpleLookup use this, and they both
360 * return the results in uval. And don't support field references.
365 ExprResolveIntegerLookup(struct xkb_context *ctx, ExprDef *expr,
366 int *val_rtrn, IdentLookupFunc lookup,
367 const void *lookupPriv)
372 ExprDef *left, *right;
376 if (expr->value_type != EXPR_TYPE_INT) {
378 "Found constant of type %s where an int was expected\n",
379 exprValueTypeText(expr->value_type));
383 *val_rtrn = expr->value.ival;
388 ok = lookup(ctx, lookupPriv, expr->value.str, EXPR_TYPE_INT, &u);
391 log_err(ctx, "Identifier \"%s\" of type int is unknown\n",
392 xkb_atom_text(ctx, expr->value.str));
399 log_err(ctx, "Default \"%s.%s\" of type int is unknown\n",
400 xkb_atom_text(ctx, expr->value.field.element),
401 xkb_atom_text(ctx, expr->value.field.field));
408 left = expr->value.binary.left;
409 right = expr->value.binary.right;
410 if (!ExprResolveIntegerLookup(ctx, left, &l, lookup, lookupPriv) ||
411 !ExprResolveIntegerLookup(ctx, right, &r, lookup, lookupPriv))
426 log_err(ctx, "Cannot divide by zero: %d / %d\n", l, r);
438 log_wsgo(ctx, "Assignment operator not implemented yet\n");
442 log_err(ctx, "The ! operator cannot be applied to an integer\n");
447 left = expr->value.child;
448 if (!ExprResolveIntegerLookup(ctx, left, &l, lookup, lookupPriv))
451 *val_rtrn = (expr->op == EXPR_NEGATE ? -l : ~l);
454 case EXPR_UNARY_PLUS:
455 left = expr->value.child;
456 return ExprResolveIntegerLookup(ctx, left, val_rtrn, lookup,
460 log_wsgo(ctx, "Unknown operator %d in ResolveInteger\n", expr->op);
468 ExprResolveInteger(struct xkb_context *ctx, ExprDef *expr, int *val_rtrn)
470 return ExprResolveIntegerLookup(ctx, expr, val_rtrn, NULL, NULL);
474 ExprResolveGroup(struct xkb_context *ctx, ExprDef *expr,
475 xkb_group_index_t *group_rtrn)
479 static const LookupEntry group_names[] = {
491 ok = ExprResolveIntegerLookup(ctx, expr, &result, SimpleLookup,
496 if (result <= 0 || result > XkbNumKbdGroups) {
497 log_err(ctx, "Group index %u is out of range (1..%d)\n",
498 result, XkbNumKbdGroups);
502 *group_rtrn = (xkb_group_index_t) result;
507 ExprResolveLevel(struct xkb_context *ctx, ExprDef *expr,
508 unsigned int *level_rtrn)
512 static const LookupEntry level_names[] = {
524 ok = ExprResolveIntegerLookup(ctx, expr, &result, SimpleLookup,
529 if (result < 1 || result > XkbMaxShiftLevel) {
530 log_err(ctx, "Shift level %d is out of range (1..%d)\n",
531 result, XkbMaxShiftLevel);
535 *level_rtrn = (unsigned int) result;
540 ExprResolveButton(struct xkb_context *ctx, ExprDef *expr, int *btn_rtrn)
543 static const LookupEntry button_names[] = {
553 if (!ExprResolveIntegerLookup(ctx, expr, &result, SimpleLookup,
562 ExprResolveString(struct xkb_context *ctx, ExprDef *expr,
563 const char **val_rtrn)
567 if (expr->value_type != EXPR_TYPE_STRING) {
568 log_err(ctx, "Found constant of type %s, expected a string\n",
569 exprValueTypeText(expr->value_type));
573 *val_rtrn = xkb_atom_text(ctx, expr->value.str);
577 log_err(ctx, "Identifier \"%s\" of type string not found\n",
578 xkb_atom_text(ctx, expr->value.str));
582 log_err(ctx, "Default \"%s.%s\" of type string not found\n",
583 xkb_atom_text(ctx, expr->value.field.element),
584 xkb_atom_text(ctx, expr->value.field.field));
595 case EXPR_UNARY_PLUS:
596 log_err(ctx, "%s of strings not permitted\n", exprOpText(expr->op));
600 log_wsgo(ctx, "Unknown operator %d in ResolveString\n", expr->op);
607 ExprResolveKeyName(struct xkb_context *ctx, ExprDef *expr,
608 char name[XkbKeyNameLength])
612 if (expr->value_type != EXPR_TYPE_KEYNAME) {
613 log_err(ctx, "Found constant of type %s, expected a key name\n",
614 exprValueTypeText(expr->value_type));
617 memcpy(name, expr->value.keyName, XkbKeyNameLength);
621 log_err(ctx, "Identifier \"%s\" of type string not found\n",
622 xkb_atom_text(ctx, expr->value.str));
626 log_err(ctx, "Default \"%s.%s\" of type key name not found\n",
627 xkb_atom_text(ctx, expr->value.field.element),
628 xkb_atom_text(ctx, expr->value.field.field));
639 case EXPR_UNARY_PLUS:
640 log_err(ctx, "%s of key name values not permitted\n",
641 exprOpText(expr->op));
645 log_wsgo(ctx, "Unknown operator %d in ResolveKeyName\n", expr->op);
652 ExprResolveEnum(struct xkb_context *ctx, ExprDef *expr,
653 unsigned int *val_rtrn, const LookupEntry *values)
655 if (expr->op != EXPR_IDENT) {
656 log_err(ctx, "Found a %s where an enumerated value was expected\n",
657 exprOpText(expr->op));
661 if (!SimpleLookup(ctx, values, expr->value.str, EXPR_TYPE_INT,
663 log_err(ctx, "Illegal identifier %s; expected one of:\n",
664 xkb_atom_text(ctx, expr->value.str));
665 while (values && values->name)
667 log_err(ctx, "\t%s\n", values->name);
677 ExprResolveMaskLookup(struct xkb_context *ctx, ExprDef *expr,
678 unsigned int *val_rtrn, IdentLookupFunc lookup,
679 const void *lookupPriv)
684 ExprDef *left, *right;
685 const char *bogus = NULL;
689 if (expr->value_type != EXPR_TYPE_INT) {
691 "Found constant of type %s where a mask was expected\n",
692 exprValueTypeText(expr->value_type));
695 *val_rtrn = (unsigned int) expr->value.ival;
699 ok = lookup(ctx, lookupPriv, expr->value.str, EXPR_TYPE_INT,
702 log_err(ctx, "Identifier \"%s\" of type int is unknown\n",
703 xkb_atom_text(ctx, expr->value.str));
707 log_err(ctx, "Default \"%s.%s\" of type int is unknown\n",
708 xkb_atom_text(ctx, expr->value.field.element),
709 xkb_atom_text(ctx, expr->value.field.field));
713 bogus = "array reference";
715 case EXPR_ACTION_DECL:
717 bogus = "function use";
719 "Unexpected %s in mask expression; Expression Ignored\n",
727 left = expr->value.binary.left;
728 right = expr->value.binary.right;
729 if (!ExprResolveMaskLookup(ctx, left, &l, lookup, lookupPriv) ||
730 !ExprResolveMaskLookup(ctx, right, &r, lookup, lookupPriv))
738 *val_rtrn = l & (~r);
742 log_err(ctx, "Cannot %s masks; Illegal operation ignored\n",
743 (expr->op == EXPR_DIVIDE ? "divide" : "multiply"));
752 log_wsgo(ctx, "Assignment operator not implemented yet\n");
756 left = expr->value.child;
757 if (!ExprResolveIntegerLookup(ctx, left, &v, lookup, lookupPriv))
763 case EXPR_UNARY_PLUS:
766 left = expr->value.child;
767 if (!ExprResolveIntegerLookup(ctx, left, &v, lookup, lookupPriv))
768 log_err(ctx, "The %s operator cannot be used with a mask\n",
769 (expr->op == EXPR_NEGATE ? "-" : "!"));
773 log_wsgo(ctx, "Unknown operator %d in ResolveMask\n", expr->op);
781 ExprResolveMask(struct xkb_context *ctx, ExprDef *expr,
782 unsigned int *mask_rtrn, const LookupEntry *values)
784 return ExprResolveMaskLookup(ctx, expr, mask_rtrn, SimpleLookup, values);
788 ExprResolveModMask(struct xkb_context *ctx, ExprDef *expr,
789 xkb_mod_mask_t *mask_rtrn)
791 return ExprResolveMaskLookup(ctx, expr, mask_rtrn, LookupModMask, NULL);
795 ExprResolveVModMask(struct xkb_keymap *keymap, ExprDef *expr,
796 xkb_mod_mask_t *mask_rtrn)
798 return ExprResolveMaskLookup(keymap->ctx, expr, mask_rtrn, LookupVModMask,
803 ExprResolveKeySym(struct xkb_context *ctx, ExprDef *expr,
804 xkb_keysym_t *sym_rtrn)
808 if (expr->op == EXPR_IDENT) {
810 str = xkb_atom_text(ctx, expr->value.str);
811 *sym_rtrn = xkb_keysym_from_name(str);
812 if (*sym_rtrn != XKB_KEY_NoSymbol)
816 if (!ExprResolveInteger(ctx, expr, &val))
819 if (val < 0 || val >= 10)
822 *sym_rtrn = ((xkb_keysym_t) val) + '0';