2520   // Get the ivar name for a given name.
2523   Opal.ivar = function(name) {  function
2889   Opal.return_ivar = function(ivar) {  argument
2891       if (this[ivar] == null) { return nil; }
2892       return this[ivar];
2895   Opal.assign_ivar = function(ivar) {  argument
2898       return this[ivar] = val;
2901   Opal.assign_ivar_val = function(ivar, static_val) {  argument
2904       return this[ivar] = static_val;
3236 … $return_ivar = Opal.return_ivar, $assign_ivar = Opal.assign_ivar, $ivar = Opal.ivar, $deny_frozen…
3429             ivar = $ivar(name);
3431         var body = $return_ivar(ivar);
3434         Opal.prop(proto, ivar, nil);
3458             ivar = $ivar(name);
3460         var body = $assign_ivar(ivar);
3466         Opal.prop(proto, ivar, nil);
4893 … 'each', [], function $$8(i){var self = $$8.$$s == null ? this : $$8.$$s, ivar = nil, inspect = ni…
4897             ivar = self.$instance_variable_get(i);
4898             inspect = $$('Opal').$inspect(ivar);
4939       var ivar = self[Opal.ivar(name.substr(1))];
4941       return ivar == null ? nil : ivar;
4950       return self[Opal.ivar(name.substr(1))] = value;    });
4958       var key = Opal.ivar(name.substr(1)),
4972       var result = [], ivar;
4977             ivar = name.slice(0, name.length - 1);
4979             ivar = name;
4981           result.push('@' + ivar);
14694 …se, true), 'instance_variables', [], $yield), 'reject', [], function $$56(ivar){var $ret_or_1 = ni…  argument
14697         if (ivar == null) ivar = nil;
14698         if ($truthy(($ret_or_1 = /^@\d+$/.test(ivar)))) {
14701           return ivar['$==']("@length")