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 ********************************************************/
27 #include "xkbcomp-priv.h"
31 typedef bool (*IdentLookupFunc)(struct xkb_context *ctx, const void *priv,
32 xkb_atom_t field, enum expr_value_type type,
33 unsigned int *val_rtrn);
36 ExprResolveLhs(struct xkb_context *ctx, const ExprDef *expr,
37 const char **elem_rtrn, const char **field_rtrn,
43 *field_rtrn = xkb_atom_text(ctx, expr->value.str);
47 *elem_rtrn = xkb_atom_text(ctx, expr->value.field.element);
48 *field_rtrn = xkb_atom_text(ctx, expr->value.field.field);
52 *elem_rtrn = xkb_atom_text(ctx, expr->value.array.element);
53 *field_rtrn = xkb_atom_text(ctx, expr->value.array.field);
54 *index_rtrn = expr->value.array.entry;
59 log_wsgo(ctx, "Unexpected operator %d in ResolveLhs\n", expr->op);
64 SimpleLookup(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
65 enum expr_value_type type, unsigned int *val_rtrn)
67 const LookupEntry *entry;
70 if (!priv || field == XKB_ATOM_NONE || type != EXPR_TYPE_INT)
73 str = xkb_atom_text(ctx, field);
74 for (entry = priv; entry && entry->name; entry++) {
75 if (istreq(str, entry->name)) {
76 *val_rtrn = entry->value;
84 /* Data passed in the *priv argument for LookupModMask. */
86 const struct xkb_keymap *keymap;
87 enum mod_type mod_type;
91 LookupModMask(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
92 enum expr_value_type type, xkb_mod_mask_t *val_rtrn)
96 const LookupModMaskPriv *arg = priv;
97 const struct xkb_keymap *keymap = arg->keymap;
98 enum mod_type mod_type = arg->mod_type;
100 if (type != EXPR_TYPE_INT)
103 str = xkb_atom_text(ctx, field);
105 if (istreq(str, "all")) {
106 *val_rtrn = MOD_REAL_MASK_ALL;
110 if (istreq(str, "none")) {
115 ndx = ModNameToIndex(keymap, field, mod_type);
116 if (ndx == XKB_MOD_INVALID)
119 *val_rtrn = (1 << ndx);
124 ExprResolveBoolean(struct xkb_context *ctx, const ExprDef *expr,
132 if (expr->value_type != EXPR_TYPE_BOOLEAN) {
134 "Found constant of type %s where boolean was expected\n",
135 expr_value_type_to_string(expr->value_type));
138 *set_rtrn = !!expr->value.ival;
142 ident = xkb_atom_text(ctx, expr->value.str);
144 if (istreq(ident, "true") ||
145 istreq(ident, "yes") ||
146 istreq(ident, "on")) {
150 else if (istreq(ident, "false") ||
151 istreq(ident, "no") ||
152 istreq(ident, "off")) {
157 log_err(ctx, "Identifier \"%s\" of type boolean is unknown\n",
158 xkb_atom_text(ctx, expr->value.str));
162 log_err(ctx, "Default \"%s.%s\" of type boolean is unknown\n",
163 xkb_atom_text(ctx, expr->value.field.element),
164 xkb_atom_text(ctx, expr->value.field.field));
169 ok = ExprResolveBoolean(ctx, expr, set_rtrn);
171 *set_rtrn = !*set_rtrn;
179 case EXPR_UNARY_PLUS:
180 log_err(ctx, "%s of boolean values not permitted\n",
181 expr_op_type_to_string(expr->op));
185 log_wsgo(ctx, "Unknown operator %d in ResolveBoolean\n", expr->op);
193 ExprResolveKeyCode(struct xkb_context *ctx, const ExprDef *expr,
196 xkb_keycode_t leftRtrn, rightRtrn;
197 ExprDef *left, *right;
201 if (expr->value_type != EXPR_TYPE_INT) {
203 "Found constant of type %s where an int was expected\n",
204 expr_value_type_to_string(expr->value_type));
208 *kc = expr->value.uval;
215 left = expr->value.binary.left;
216 right = expr->value.binary.right;
218 if (!ExprResolveKeyCode(ctx, left, &leftRtrn) ||
219 !ExprResolveKeyCode(ctx, right, &rightRtrn))
224 *kc = leftRtrn + rightRtrn;
227 *kc = leftRtrn - rightRtrn;
230 *kc = leftRtrn * rightRtrn;
233 if (rightRtrn == 0) {
234 log_err(ctx, "Cannot divide by zero: %d / %d\n",
235 leftRtrn, rightRtrn);
239 *kc = leftRtrn / rightRtrn;
248 left = expr->value.child;
249 if (!ExprResolveKeyCode(ctx, left, &leftRtrn))
255 case EXPR_UNARY_PLUS:
256 left = expr->value.child;
257 return ExprResolveKeyCode(ctx, left, kc);
260 log_wsgo(ctx, "Unknown operator %d in ResolveKeyCode\n", expr->op);
268 * This function returns ... something. It's a bit of a guess, really.
270 * If an integer is given in value ctx, it will be returned in ival.
271 * If an ident or field reference is given, the lookup function (if given)
272 * will be called. At the moment, only SimpleLookup use this, and they both
273 * return the results in uval. And don't support field references.
278 ExprResolveIntegerLookup(struct xkb_context *ctx, const ExprDef *expr,
279 int *val_rtrn, IdentLookupFunc lookup,
280 const void *lookupPriv)
285 ExprDef *left, *right;
289 if (expr->value_type != EXPR_TYPE_INT) {
291 "Found constant of type %s where an int was expected\n",
292 expr_value_type_to_string(expr->value_type));
296 *val_rtrn = expr->value.ival;
301 ok = lookup(ctx, lookupPriv, expr->value.str, EXPR_TYPE_INT, &u);
304 log_err(ctx, "Identifier \"%s\" of type int is unknown\n",
305 xkb_atom_text(ctx, expr->value.str));
312 log_err(ctx, "Default \"%s.%s\" of type int is unknown\n",
313 xkb_atom_text(ctx, expr->value.field.element),
314 xkb_atom_text(ctx, expr->value.field.field));
321 left = expr->value.binary.left;
322 right = expr->value.binary.right;
323 if (!ExprResolveIntegerLookup(ctx, left, &l, lookup, lookupPriv) ||
324 !ExprResolveIntegerLookup(ctx, right, &r, lookup, lookupPriv))
339 log_err(ctx, "Cannot divide by zero: %d / %d\n", l, r);
351 log_wsgo(ctx, "Assignment operator not implemented yet\n");
355 log_err(ctx, "The ! operator cannot be applied to an integer\n");
360 left = expr->value.child;
361 if (!ExprResolveIntegerLookup(ctx, left, &l, lookup, lookupPriv))
364 *val_rtrn = (expr->op == EXPR_NEGATE ? -l : ~l);
367 case EXPR_UNARY_PLUS:
368 left = expr->value.child;
369 return ExprResolveIntegerLookup(ctx, left, val_rtrn, lookup,
373 log_wsgo(ctx, "Unknown operator %d in ResolveInteger\n", expr->op);
381 ExprResolveInteger(struct xkb_context *ctx, const ExprDef *expr,
384 return ExprResolveIntegerLookup(ctx, expr, val_rtrn, NULL, NULL);
388 ExprResolveGroup(struct xkb_context *ctx, const ExprDef *expr,
389 xkb_layout_index_t *group_rtrn)
394 ok = ExprResolveIntegerLookup(ctx, expr, &result, SimpleLookup,
399 if (result <= 0 || result > XKB_NUM_GROUPS) {
400 log_err(ctx, "Group index %u is out of range (1..%d)\n",
401 result, XKB_NUM_GROUPS);
405 *group_rtrn = (xkb_layout_index_t) result;
410 ExprResolveLevel(struct xkb_context *ctx, const ExprDef *expr,
411 xkb_level_index_t *level_rtrn)
416 ok = ExprResolveIntegerLookup(ctx, expr, &result, SimpleLookup,
422 log_err(ctx, "Shift level %d is out of range\n", result);
426 /* Level is zero-indexed from now on. */
427 *level_rtrn = (unsigned int) (result - 1);
432 ExprResolveButton(struct xkb_context *ctx, const ExprDef *expr, int *btn_rtrn)
436 if (!ExprResolveIntegerLookup(ctx, expr, &result, SimpleLookup,
445 ExprResolveString(struct xkb_context *ctx, const ExprDef *expr,
446 xkb_atom_t *val_rtrn)
450 if (expr->value_type != EXPR_TYPE_STRING) {
451 log_err(ctx, "Found constant of type %s, expected a string\n",
452 expr_value_type_to_string(expr->value_type));
456 *val_rtrn = expr->value.str;
460 log_err(ctx, "Identifier \"%s\" of type string not found\n",
461 xkb_atom_text(ctx, expr->value.str));
465 log_err(ctx, "Default \"%s.%s\" of type string not found\n",
466 xkb_atom_text(ctx, expr->value.field.element),
467 xkb_atom_text(ctx, expr->value.field.field));
478 case EXPR_UNARY_PLUS:
479 log_err(ctx, "%s of strings not permitted\n",
480 expr_op_type_to_string(expr->op));
484 log_wsgo(ctx, "Unknown operator %d in ResolveString\n", expr->op);
491 ExprResolveEnum(struct xkb_context *ctx, const ExprDef *expr,
492 unsigned int *val_rtrn, const LookupEntry *values)
494 if (expr->op != EXPR_IDENT) {
495 log_err(ctx, "Found a %s where an enumerated value was expected\n",
496 expr_op_type_to_string(expr->op));
500 if (!SimpleLookup(ctx, values, expr->value.str, EXPR_TYPE_INT,
502 log_err(ctx, "Illegal identifier %s; expected one of:\n",
503 xkb_atom_text(ctx, expr->value.str));
504 while (values && values->name)
506 log_err(ctx, "\t%s\n", values->name);
516 ExprResolveMaskLookup(struct xkb_context *ctx, const ExprDef *expr,
517 unsigned int *val_rtrn, IdentLookupFunc lookup,
518 const void *lookupPriv)
523 ExprDef *left, *right;
524 const char *bogus = NULL;
528 if (expr->value_type != EXPR_TYPE_INT) {
530 "Found constant of type %s where a mask was expected\n",
531 expr_value_type_to_string(expr->value_type));
534 *val_rtrn = (unsigned int) expr->value.ival;
538 ok = lookup(ctx, lookupPriv, expr->value.str, EXPR_TYPE_INT,
541 log_err(ctx, "Identifier \"%s\" of type int is unknown\n",
542 xkb_atom_text(ctx, expr->value.str));
546 log_err(ctx, "Default \"%s.%s\" of type int is unknown\n",
547 xkb_atom_text(ctx, expr->value.field.element),
548 xkb_atom_text(ctx, expr->value.field.field));
552 bogus = "array reference";
554 case EXPR_ACTION_DECL:
556 bogus = "function use";
558 "Unexpected %s in mask expression; Expression Ignored\n",
566 left = expr->value.binary.left;
567 right = expr->value.binary.right;
568 if (!ExprResolveMaskLookup(ctx, left, &l, lookup, lookupPriv) ||
569 !ExprResolveMaskLookup(ctx, right, &r, lookup, lookupPriv))
577 *val_rtrn = l & (~r);
581 log_err(ctx, "Cannot %s masks; Illegal operation ignored\n",
582 (expr->op == EXPR_DIVIDE ? "divide" : "multiply"));
591 log_wsgo(ctx, "Assignment operator not implemented yet\n");
595 left = expr->value.child;
596 if (!ExprResolveIntegerLookup(ctx, left, &v, lookup, lookupPriv))
602 case EXPR_UNARY_PLUS:
605 left = expr->value.child;
606 if (!ExprResolveIntegerLookup(ctx, left, &v, lookup, lookupPriv))
607 log_err(ctx, "The %s operator cannot be used with a mask\n",
608 (expr->op == EXPR_NEGATE ? "-" : "!"));
612 log_wsgo(ctx, "Unknown operator %d in ResolveMask\n", expr->op);
620 ExprResolveMask(struct xkb_context *ctx, const ExprDef *expr,
621 unsigned int *mask_rtrn, const LookupEntry *values)
623 return ExprResolveMaskLookup(ctx, expr, mask_rtrn, SimpleLookup, values);
627 ExprResolveModMask(struct xkb_keymap *keymap, const ExprDef *expr,
628 enum mod_type mod_type, xkb_mod_mask_t *mask_rtrn)
630 LookupModMaskPriv priv = { .keymap = keymap, .mod_type = mod_type };
631 return ExprResolveMaskLookup(keymap->ctx, expr, mask_rtrn, LookupModMask,
636 ExprResolveKeySym(struct xkb_context *ctx, const ExprDef *expr,
637 xkb_keysym_t *sym_rtrn)
641 if (expr->op == EXPR_IDENT) {
643 str = xkb_atom_text(ctx, expr->value.str);
644 *sym_rtrn = xkb_keysym_from_name(str);
645 if (*sym_rtrn != XKB_KEY_NoSymbol)
649 if (!ExprResolveInteger(ctx, expr, &val))
652 if (val < 0 || val >= 10)
655 *sym_rtrn = ((xkb_keysym_t) val) + '0';
660 ExprResolveMod(struct xkb_keymap *keymap, const ExprDef *def,
661 enum mod_type mod_type, xkb_mod_index_t *ndx_rtrn)
664 xkb_atom_t name = def->value.str;
666 if (def->op != EXPR_IDENT) {
668 "Cannot resolve virtual modifier: "
669 "found %s where a virtual modifier name was expected\n",
670 expr_op_type_to_string(def->op));
674 ndx = ModNameToIndex(keymap, name, mod_type);
675 if (ndx == XKB_MOD_INVALID) {
677 "Cannot resolve virtual modifier: "
678 "\"%s\" was not previously declared\n",
679 xkb_atom_text(keymap->ctx, name));