static bool
CheckGroupField(struct xkb_keymap *keymap, unsigned action,
const ExprDef *value, enum xkb_action_flags *flags_inout,
xkb_layout_index_t *grp_rtrn)
{
const ExprDef *spec;
if (value->expr.op == EXPR_NEGATE || value->expr.op == EXPR_UNARY_PLUS) {
*flags_inout &= ~ACTION_ABSOLUTE_SWITCH;
spec = value->unary.child;
}
else {
*flags_inout |= ACTION_ABSOLUTE_SWITCH;
spec = value;
}
if (!ExprResolveGroup(keymap->ctx, spec, grp_rtrn))
return ReportMismatch(keymap, action, ACTION_FIELD_GROUP,
"integer (range 1..8)");
if (value->expr.op == EXPR_NEGATE)
*grp_rtrn = -*grp_rtrn;
else if (value->expr.op != EXPR_UNARY_PLUS)
(*grp_rtrn)--;
return true;
}
static bool
CheckGroupField(struct xkb_context *ctx, enum xkb_action_type action,
const ExprDef *array_ndx, const ExprDef *value,
enum xkb_action_flags *flags_inout, int32_t *group_rtrn)
{
const ExprDef *spec;
xkb_layout_index_t idx;
enum xkb_action_flags flags = *flags_inout;
if (array_ndx)
return ReportActionNotArray(ctx, action, ACTION_FIELD_GROUP);
if (value->expr.op == EXPR_NEGATE || value->expr.op == EXPR_UNARY_PLUS) {
flags &= ~ACTION_ABSOLUTE_SWITCH;
spec = value->unary.child;
}
else {
flags |= ACTION_ABSOLUTE_SWITCH;
spec = value;
}
if (!ExprResolveGroup(ctx, spec, &idx))
return ReportMismatch(ctx, action, ACTION_FIELD_GROUP,
"integer (range 1..8)");
/* +n, -n are relative, n is absolute. */
if (value->expr.op == EXPR_NEGATE || value->expr.op == EXPR_UNARY_PLUS) {
*group_rtrn = (int32_t) idx;
if (value->expr.op == EXPR_NEGATE)
*group_rtrn = -*group_rtrn;
}
else {
*group_rtrn = (int32_t) (idx - 1);
}
*flags_inout = flags;
return true;
}
