static bool
CheckLatchLockFlags(struct xkb_keymap *keymap, enum xkb_action_type action,
enum action_field field, const ExprDef *value,
enum xkb_action_flags *flags_inout)
{
enum xkb_action_flags tmp;
bool result;
if (field == ACTION_FIELD_CLEAR_LOCKS)
tmp = ACTION_LOCK_CLEAR;
else if (field == ACTION_FIELD_LATCH_TO_LOCK)
tmp = ACTION_LATCH_TO_LOCK;
else
return false; /* WSGO! */
if (!ExprResolveBoolean(keymap->ctx, value, &result))
return ReportMismatch(keymap, action, field, "boolean");
if (result)
*flags_inout |= tmp;
else
*flags_inout &= ~tmp;
return true;
}
static bool
HandleSwitchScreen(struct xkb_keymap *keymap, union xkb_action *action,
enum action_field field, const ExprDef *array_ndx,
const ExprDef *value)
{
struct xkb_switch_screen_action *act = &action->screen;
if (field == ACTION_FIELD_SCREEN) {
const ExprDef *scrn;
int val;
if (array_ndx)
return ReportActionNotArray(keymap, action->type, field);
if (value->expr.op == EXPR_NEGATE ||
value->expr.op == EXPR_UNARY_PLUS) {
act->flags &= ~ACTION_ABSOLUTE_SWITCH;
scrn = value->unary.child;
}
else {
act->flags |= ACTION_ABSOLUTE_SWITCH;
scrn = value;
}
if (!ExprResolveInteger(keymap->ctx, scrn, &val))
return ReportMismatch(keymap, action->type, field,
"integer (0..255)");
if (val < 0 || val > 255) {
log_err(keymap->ctx,
"Screen index must be in the range 1..255; "
"Illegal screen value %d ignored\n", val);
return false;
}
act->screen = (value->expr.op == EXPR_NEGATE ? -val : val);
return true;
}
else if (field == ACTION_FIELD_SAME) {
bool set;
if (array_ndx)
return ReportActionNotArray(keymap, action->type, field);
if (!ExprResolveBoolean(keymap->ctx, value, &set))
return ReportMismatch(keymap, action->type, field, "boolean");
if (set)
act->flags &= ~ACTION_SAME_SCREEN;
else
act->flags |= ACTION_SAME_SCREEN;
return true;
}
return ReportIllegal(keymap, action->type, field);
}
static bool
HandleMovePtr(struct xkb_keymap *keymap, union xkb_action *action,
enum action_field field, const ExprDef *array_ndx,
const ExprDef *value)
{
struct xkb_pointer_action *act = &action->ptr;
bool absolute;
if (array_ndx && (field == ACTION_FIELD_X || field == ACTION_FIELD_Y))
return ReportActionNotArray(keymap, action->type, field);
if (field == ACTION_FIELD_X || field == ACTION_FIELD_Y) {
int val;
if (value->expr.op == EXPR_NEGATE || value->expr.op == EXPR_UNARY_PLUS)
absolute = false;
else
absolute = true;
if (!ExprResolveInteger(keymap->ctx, value, &val))
return ReportMismatch(keymap, action->type, field, "integer");
if (field == ACTION_FIELD_X) {
if (absolute)
act->flags |= ACTION_ABSOLUTE_X;
act->x = val;
}
else {
if (absolute)
act->flags |= ACTION_ABSOLUTE_Y;
act->y = val;
}
return true;
}
else if (field == ACTION_FIELD_ACCEL) {
bool set;
if (!ExprResolveBoolean(keymap->ctx, value, &set))
return ReportMismatch(keymap, action->type, field, "boolean");
if (set)
act->flags &= ~ACTION_NO_ACCEL;
else
act->flags |= ACTION_NO_ACCEL;
}
return ReportIllegal(keymap, action->type, field);
}
static bool
CheckBooleanFlag(struct xkb_context *ctx, enum xkb_action_type action,
enum action_field field, enum xkb_action_flags flag,
const ExprDef *array_ndx, const ExprDef *value,
enum xkb_action_flags *flags_inout)
{
bool set;
if (array_ndx)
return ReportActionNotArray(ctx, action, field);
if (!ExprResolveBoolean(ctx, value, &set))
return ReportMismatch(ctx, action, field, "boolean");
if (set)
*flags_inout |= flag;
else
*flags_inout &= ~flag;
return true;
}
bool
ExprResolveBoolean(struct xkb_context *ctx, const ExprDef *expr,
bool *set_rtrn)
{
bool ok = false;
const char *ident;
switch (expr->expr.op) {
case EXPR_VALUE:
if (expr->expr.value_type != EXPR_TYPE_BOOLEAN) {
log_err(ctx,
"Found constant of type %s where boolean was expected\n",
expr_value_type_to_string(expr->expr.value_type));
return false;
}
*set_rtrn = expr->boolean.set;
return true;
case EXPR_IDENT:
ident = xkb_atom_text(ctx, expr->ident.ident);
if (ident) {
if (istreq(ident, "true") ||
istreq(ident, "yes") ||
istreq(ident, "on")) {
*set_rtrn = true;
return true;
}
else if (istreq(ident, "false") ||
istreq(ident, "no") ||
istreq(ident, "off")) {
*set_rtrn = false;
return true;
}
}
log_err(ctx, "Identifier \"%s\" of type boolean is unknown\n", ident);
return false;
case EXPR_FIELD_REF:
log_err(ctx, "Default \"%s.%s\" of type boolean is unknown\n",
xkb_atom_text(ctx, expr->field_ref.element),
xkb_atom_text(ctx, expr->field_ref.field));
return false;
case EXPR_INVERT:
case EXPR_NOT:
ok = ExprResolveBoolean(ctx, expr, set_rtrn);
if (ok)
*set_rtrn = !*set_rtrn;
return ok;
case EXPR_ADD:
case EXPR_SUBTRACT:
case EXPR_MULTIPLY:
case EXPR_DIVIDE:
case EXPR_ASSIGN:
case EXPR_NEGATE:
case EXPR_UNARY_PLUS:
log_err(ctx, "%s of boolean values not permitted\n",
expr_op_type_to_string(expr->expr.op));
break;
default:
log_wsgo(ctx, "Unknown operator %d in ResolveBoolean\n",
expr->expr.op);
break;
}
return false;
}
