diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
index 9c9921e3a..817daa59a 100644
--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -424,6 +424,15 @@ new_stmts(parser_state *p, node *body)
   return (node*)n;
 }
 
+/* Helper: push statement to stmts node */
+static node*
+stmts_push(parser_state *p, node *stmts, node *stmt)
+{
+  struct mrb_ast_stmts_node *n = stmts_node(stmts);
+  n->stmts = push(n->stmts, stmt);
+  return stmts;
+}
+
 /* struct: begin_node(body) */
 static node*
 new_begin(parser_state *p, node *body)
@@ -2069,7 +2078,7 @@ top_stmts       : none
                     }
                 | top_stmts terms top_stmt
                     {
-                      $$ = push($1, newline_node($3));
+                      $$ = stmts_push(p, $1, newline_node($3));
                     }
                 | error top_stmt
                     {
@@ -2102,7 +2111,7 @@ bodystmt        : compstmt
                       }
                       else if ($3) {
                         yywarning(p, "else without rescue is useless");
-                        $$ = push($1, $3);
+                        $$ = stmts_push(p, $1, $3);
                       }
                       else {
                         $$ = $1;
@@ -2134,9 +2143,7 @@ stmts           : none
                     }
                 | stmts terms stmt
                     {
-                      /* Update the cons-list inside the existing variable-sized node */
-                      stmts_node($1)->stmts = push(stmts_node($1)->stmts, newline_node($3));
-                      $$ = $1;
+                      $$ = stmts_push(p, $1, newline_node($3));
                     }
                 | error stmt
                     {
diff --git a/mrbgems/mruby-compiler/core/y.tab.c b/mrbgems/mruby-compiler/core/y.tab.c
index a8e87a25c..8766c381b 100644
--- a/mrbgems/mruby-compiler/core/y.tab.c
+++ b/mrbgems/mruby-compiler/core/y.tab.c
@@ -486,6 +486,15 @@ new_stmts(parser_state *p, node *body)
   return (node*)n;
 }
 
+/* Helper: push statement to stmts node */
+static node*
+stmts_push(parser_state *p, node *stmts, node *stmt)
+{
+  struct mrb_ast_stmts_node *n = stmts_node(stmts);
+  n->stmts = push(n->stmts, stmt);
+  return stmts;
+}
+
 /* struct: begin_node(body) */
 static node*
 new_begin(parser_state *p, node *body)
@@ -1928,7 +1937,7 @@ prohibit_literals(parser_state *p, node *n)
 /* xxx ----------------------------- */
 
 
-#line 1932 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 1941 "mrbgems/mruby-compiler/core/y.tab.c"
 
 # ifndef YY_CAST
 #  ifdef __cplusplus
@@ -2099,7 +2108,7 @@ extern int yydebug;
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
 union YYSTYPE
 {
-#line 1875 "mrbgems/mruby-compiler/core/parse.y"
+#line 1884 "mrbgems/mruby-compiler/core/parse.y"
 
     node *nd;
     mrb_sym id;
@@ -2107,7 +2116,7 @@ union YYSTYPE
     stack_type stack;
     const struct vtable *vars;
 
-#line 2111 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 2120 "mrbgems/mruby-compiler/core/y.tab.c"
 
 };
 typedef union YYSTYPE YYSTYPE;
@@ -2866,69 +2875,69 @@ static const yytype_uint8 yytranslate[] =
 /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
 static const yytype_int16 yyrline[] =
 {
-       0,  2046,  2046,  2046,  2056,  2062,  2066,  2070,  2074,  2080,
-    2082,  2081,  2095,  2121,  2127,  2131,  2135,  2141,  2147,  2147,
-    2151,  2155,  2159,  2163,  2172,  2181,  2185,  2190,  2191,  2195,
-    2199,  2203,  2207,  2213,  2216,  2220,  2224,  2228,  2232,  2236,
-    2241,  2245,  2254,  2263,  2272,  2281,  2288,  2289,  2293,  2296,
-    2297,  2301,  2305,  2309,  2313,  2316,  2326,  2325,  2340,  2349,
-    2350,  2353,  2354,  2361,  2360,  2375,  2379,  2384,  2388,  2393,
-    2397,  2402,  2406,  2410,  2414,  2418,  2424,  2428,  2434,  2435,
-    2441,  2445,  2449,  2453,  2457,  2461,  2465,  2469,  2473,  2477,
-    2483,  2484,  2490,  2494,  2500,  2504,  2510,  2514,  2518,  2522,
-    2526,  2530,  2536,  2542,  2549,  2553,  2557,  2561,  2565,  2569,
-    2575,  2581,  2586,  2592,  2596,  2599,  2603,  2607,  2614,  2615,
-    2616,  2617,  2622,  2629,  2630,  2633,  2637,  2637,  2643,  2644,
-    2645,  2646,  2647,  2648,  2649,  2650,  2651,  2652,  2653,  2654,
-    2655,  2656,  2657,  2658,  2659,  2660,  2661,  2662,  2663,  2664,
-    2665,  2666,  2667,  2668,  2669,  2670,  2671,  2672,  2675,  2675,
-    2675,  2676,  2676,  2677,  2677,  2677,  2678,  2678,  2678,  2678,
-    2679,  2679,  2679,  2680,  2680,  2680,  2681,  2681,  2681,  2681,
-    2682,  2682,  2682,  2682,  2683,  2683,  2683,  2683,  2684,  2684,
-    2684,  2684,  2685,  2685,  2685,  2685,  2686,  2686,  2689,  2693,
-    2697,  2701,  2705,  2709,  2713,  2718,  2723,  2728,  2732,  2736,
-    2740,  2744,  2748,  2752,  2756,  2760,  2764,  2768,  2772,  2776,
-    2780,  2784,  2788,  2792,  2796,  2800,  2804,  2808,  2812,  2816,
-    2820,  2824,  2828,  2832,  2836,  2840,  2844,  2848,  2852,  2856,
-    2860,  2864,  2868,  2872,  2876,  2885,  2894,  2903,  2912,  2918,
-    2919,  2923,  2927,  2933,  2937,  2944,  2948,  2957,  2974,  2975,
-    2978,  2979,  2980,  2984,  2988,  2994,  2999,  3003,  3007,  3011,
-    3017,  3017,  3028,  3032,  3038,  3042,  3048,  3051,  3056,  3060,
-    3064,  3069,  3073,  3079,  3084,  3088,  3094,  3095,  3099,  3103,
-    3104,  3105,  3106,  3107,  3112,  3111,  3123,  3127,  3122,  3132,
-    3132,  3136,  3140,  3144,  3148,  3152,  3156,  3160,  3164,  3168,
-    3172,  3176,  3177,  3183,  3190,  3182,  3203,  3211,  3219,  3219,
-    3219,  3226,  3226,  3226,  3233,  3239,  3244,  3246,  3243,  3255,
-    3253,  3271,  3276,  3269,  3293,  3291,  3307,  3317,  3328,  3332,
-    3336,  3340,  3346,  3353,  3354,  3355,  3358,  3359,  3362,  3363,
-    3371,  3372,  3378,  3382,  3385,  3389,  3393,  3397,  3402,  3406,
-    3410,  3414,  3420,  3419,  3429,  3433,  3437,  3441,  3447,  3452,
-    3457,  3461,  3465,  3469,  3473,  3477,  3481,  3485,  3489,  3493,
-    3497,  3501,  3505,  3509,  3513,  3519,  3524,  3531,  3531,  3535,
-    3540,  3546,  3550,  3556,  3557,  3560,  3565,  3568,  3572,  3578,
-    3582,  3589,  3588,  3605,  3610,  3614,  3619,  3626,  3630,  3634,
-    3638,  3642,  3646,  3650,  3654,  3658,  3665,  3664,  3679,  3678,
-    3694,  3702,  3711,  3714,  3721,  3724,  3728,  3729,  3732,  3736,
-    3739,  3743,  3746,  3747,  3748,  3749,  3752,  3753,  3759,  3764,
-    3769,  3774,  3780,  3781,  3787,  3793,  3792,  3804,  3808,  3814,
-    3818,  3824,  3833,  3844,  3847,  3848,  3851,  3857,  3863,  3864,
-    3867,  3874,  3873,  3888,  3892,  3900,  3904,  3916,  3923,  3930,
-    3931,  3932,  3933,  3934,  3938,  3944,  3948,  3956,  3957,  3958,
-    3962,  3968,  3972,  3976,  3980,  3984,  3990,  3994,  4000,  4004,
-    4008,  4012,  4016,  4020,  4024,  4032,  4039,  4045,  4046,  4050,
-    4054,  4053,  4070,  4071,  4074,  4080,  4084,  4090,  4091,  4095,
-    4099,  4105,  4109,  4115,  4121,  4128,  4134,  4141,  4145,  4151,
-    4155,  4161,  4162,  4165,  4169,  4175,  4179,  4183,  4187,  4193,
-    4198,  4203,  4207,  4211,  4215,  4219,  4223,  4227,  4231,  4235,
-    4239,  4243,  4247,  4251,  4255,  4260,  4266,  4271,  4276,  4281,
-    4286,  4293,  4297,  4304,  4309,  4308,  4320,  4324,  4330,  4338,
-    4346,  4354,  4358,  4364,  4368,  4374,  4375,  4378,  4383,  4390,
-    4391,  4394,  4398,  4404,  4408,  4414,  4420,  4420,  4427,  4428,
-    4434,  4438,  4444,  4450,  4455,  4459,  4464,  4469,  4485,  4490,
-    4496,  4497,  4498,  4501,  4502,  4503,  4504,  4507,  4508,  4509,
-    4512,  4513,  4516,  4520,  4526,  4527,  4533,  4534,  4537,  4538,
-    4541,  4544,  4545,  4546,  4549,  4550,  4553,  4558,  4561,  4562,
-    4566
+       0,  2055,  2055,  2055,  2065,  2071,  2075,  2079,  2083,  2089,
+    2091,  2090,  2104,  2130,  2136,  2140,  2144,  2148,  2154,  2154,
+    2158,  2162,  2166,  2170,  2179,  2188,  2192,  2197,  2198,  2202,
+    2206,  2210,  2214,  2220,  2223,  2227,  2231,  2235,  2239,  2243,
+    2248,  2252,  2261,  2270,  2279,  2288,  2295,  2296,  2300,  2303,
+    2304,  2308,  2312,  2316,  2320,  2323,  2333,  2332,  2347,  2356,
+    2357,  2360,  2361,  2368,  2367,  2382,  2386,  2391,  2395,  2400,
+    2404,  2409,  2413,  2417,  2421,  2425,  2431,  2435,  2441,  2442,
+    2448,  2452,  2456,  2460,  2464,  2468,  2472,  2476,  2480,  2484,
+    2490,  2491,  2497,  2501,  2507,  2511,  2517,  2521,  2525,  2529,
+    2533,  2537,  2543,  2549,  2556,  2560,  2564,  2568,  2572,  2576,
+    2582,  2588,  2593,  2599,  2603,  2606,  2610,  2614,  2621,  2622,
+    2623,  2624,  2629,  2636,  2637,  2640,  2644,  2644,  2650,  2651,
+    2652,  2653,  2654,  2655,  2656,  2657,  2658,  2659,  2660,  2661,
+    2662,  2663,  2664,  2665,  2666,  2667,  2668,  2669,  2670,  2671,
+    2672,  2673,  2674,  2675,  2676,  2677,  2678,  2679,  2682,  2682,
+    2682,  2683,  2683,  2684,  2684,  2684,  2685,  2685,  2685,  2685,
+    2686,  2686,  2686,  2687,  2687,  2687,  2688,  2688,  2688,  2688,
+    2689,  2689,  2689,  2689,  2690,  2690,  2690,  2690,  2691,  2691,
+    2691,  2691,  2692,  2692,  2692,  2692,  2693,  2693,  2696,  2700,
+    2704,  2708,  2712,  2716,  2720,  2725,  2730,  2735,  2739,  2743,
+    2747,  2751,  2755,  2759,  2763,  2767,  2771,  2775,  2779,  2783,
+    2787,  2791,  2795,  2799,  2803,  2807,  2811,  2815,  2819,  2823,
+    2827,  2831,  2835,  2839,  2843,  2847,  2851,  2855,  2859,  2863,
+    2867,  2871,  2875,  2879,  2883,  2892,  2901,  2910,  2919,  2925,
+    2926,  2930,  2934,  2940,  2944,  2951,  2955,  2964,  2981,  2982,
+    2985,  2986,  2987,  2991,  2995,  3001,  3006,  3010,  3014,  3018,
+    3024,  3024,  3035,  3039,  3045,  3049,  3055,  3058,  3063,  3067,
+    3071,  3076,  3080,  3086,  3091,  3095,  3101,  3102,  3106,  3110,
+    3111,  3112,  3113,  3114,  3119,  3118,  3130,  3134,  3129,  3139,
+    3139,  3143,  3147,  3151,  3155,  3159,  3163,  3167,  3171,  3175,
+    3179,  3183,  3184,  3190,  3197,  3189,  3210,  3218,  3226,  3226,
+    3226,  3233,  3233,  3233,  3240,  3246,  3251,  3253,  3250,  3262,
+    3260,  3278,  3283,  3276,  3300,  3298,  3314,  3324,  3335,  3339,
+    3343,  3347,  3353,  3360,  3361,  3362,  3365,  3366,  3369,  3370,
+    3378,  3379,  3385,  3389,  3392,  3396,  3400,  3404,  3409,  3413,
+    3417,  3421,  3427,  3426,  3436,  3440,  3444,  3448,  3454,  3459,
+    3464,  3468,  3472,  3476,  3480,  3484,  3488,  3492,  3496,  3500,
+    3504,  3508,  3512,  3516,  3520,  3526,  3531,  3538,  3538,  3542,
+    3547,  3553,  3557,  3563,  3564,  3567,  3572,  3575,  3579,  3585,
+    3589,  3596,  3595,  3612,  3617,  3621,  3626,  3633,  3637,  3641,
+    3645,  3649,  3653,  3657,  3661,  3665,  3672,  3671,  3686,  3685,
+    3701,  3709,  3718,  3721,  3728,  3731,  3735,  3736,  3739,  3743,
+    3746,  3750,  3753,  3754,  3755,  3756,  3759,  3760,  3766,  3771,
+    3776,  3781,  3787,  3788,  3794,  3800,  3799,  3811,  3815,  3821,
+    3825,  3831,  3840,  3851,  3854,  3855,  3858,  3864,  3870,  3871,
+    3874,  3881,  3880,  3895,  3899,  3907,  3911,  3923,  3930,  3937,
+    3938,  3939,  3940,  3941,  3945,  3951,  3955,  3963,  3964,  3965,
+    3969,  3975,  3979,  3983,  3987,  3991,  3997,  4001,  4007,  4011,
+    4015,  4019,  4023,  4027,  4031,  4039,  4046,  4052,  4053,  4057,
+    4061,  4060,  4077,  4078,  4081,  4087,  4091,  4097,  4098,  4102,
+    4106,  4112,  4116,  4122,  4128,  4135,  4141,  4148,  4152,  4158,
+    4162,  4168,  4169,  4172,  4176,  4182,  4186,  4190,  4194,  4200,
+    4205,  4210,  4214,  4218,  4222,  4226,  4230,  4234,  4238,  4242,
+    4246,  4250,  4254,  4258,  4262,  4267,  4273,  4278,  4283,  4288,
+    4293,  4300,  4304,  4311,  4316,  4315,  4327,  4331,  4337,  4345,
+    4353,  4361,  4365,  4371,  4375,  4381,  4382,  4385,  4390,  4397,
+    4398,  4401,  4405,  4411,  4415,  4421,  4427,  4427,  4434,  4435,
+    4441,  4445,  4451,  4457,  4462,  4466,  4471,  4476,  4492,  4497,
+    4503,  4504,  4505,  4508,  4509,  4510,  4511,  4514,  4515,  4516,
+    4519,  4520,  4523,  4527,  4533,  4534,  4540,  4541,  4544,  4545,
+    4548,  4551,  4552,  4553,  4556,  4557,  4560,  4565,  4568,  4569,
+    4573
 };
 #endif
 
@@ -6905,7 +6914,7 @@ YYLTYPE yylloc = yyloc_default;
 
 
 
-#line 6909 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6918 "mrbgems/mruby-compiler/core/y.tab.c"
 
   yylsp[0] = yylloc;
   goto yysetstate;
@@ -7118,91 +7127,91 @@ yyreduce:
   switch (yyn)
     {
   case 2: /* $@1: %empty  */
-#line 2046 "mrbgems/mruby-compiler/core/parse.y"
+#line 2055 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_BEG;
                       if (!p->locals) p->locals = cons(0,0);
                     }
-#line 7127 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7136 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 3: /* program: $@1 top_compstmt  */
-#line 2051 "mrbgems/mruby-compiler/core/parse.y"
+#line 2060 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->tree = new_scope(p, (yyvsp[0].nd));
                     }
-#line 7135 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7144 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 4: /* top_compstmt: top_stmts opt_terms  */
-#line 2057 "mrbgems/mruby-compiler/core/parse.y"
+#line 2066 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 7143 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7152 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 5: /* top_stmts: none  */
-#line 2063 "mrbgems/mruby-compiler/core/parse.y"
+#line 2072 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 7151 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7160 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 6: /* top_stmts: top_stmt  */
-#line 2067 "mrbgems/mruby-compiler/core/parse.y"
+#line 2076 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, (yyvsp[0].nd));
                     }
-#line 7159 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7168 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 7: /* top_stmts: top_stmts terms top_stmt  */
-#line 2071 "mrbgems/mruby-compiler/core/parse.y"
+#line 2080 "mrbgems/mruby-compiler/core/parse.y"
                     {
-                      (yyval.nd) = push((yyvsp[-2].nd), newline_node((yyvsp[0].nd)));
+                      (yyval.nd) = stmts_push(p, (yyvsp[-2].nd), newline_node((yyvsp[0].nd)));
                     }
-#line 7167 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7176 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 8: /* top_stmts: error top_stmt  */
-#line 2075 "mrbgems/mruby-compiler/core/parse.y"
+#line 2084 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 7175 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 10: /* @2: %empty  */
-#line 2082 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = local_switch(p);
-                      nvars_block(p);
-                    }
 #line 7184 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
+  case 10: /* @2: %empty  */
+#line 2091 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = local_switch(p);
+                      nvars_block(p);
+                    }
+#line 7193 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
   case 11: /* top_stmt: "'BEGIN'" @2 '{' top_compstmt '}'  */
-#line 2087 "mrbgems/mruby-compiler/core/parse.y"
+#line 2096 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[-4]), p, "BEGIN not supported");
                       local_resume(p, (yyvsp[-3].nd));
                       nvars_unnest(p);
                       (yyval.nd) = 0;
                     }
-#line 7195 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7204 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 12: /* bodystmt: compstmt opt_rescue opt_else opt_ensure  */
-#line 2099 "mrbgems/mruby-compiler/core/parse.y"
+#line 2108 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[-2].nd)) {
                         (yyval.nd) = new_rescue(p, (yyvsp[-3].nd), (yyvsp[-2].nd), (yyvsp[-1].nd));
                       }
                       else if ((yyvsp[-1].nd)) {
                         yywarning(p, "else without rescue is useless");
-                        (yyval.nd) = push((yyvsp[-3].nd), (yyvsp[-1].nd));
+                        (yyval.nd) = stmts_push(p, (yyvsp[-3].nd), (yyvsp[-1].nd));
                       }
                       else {
                         (yyval.nd) = (yyvsp[-3].nd);
@@ -7216,91 +7225,89 @@ yyreduce:
                         }
                       }
                     }
-#line 7220 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7229 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 13: /* compstmt: stmts opt_terms  */
-#line 2122 "mrbgems/mruby-compiler/core/parse.y"
+#line 2131 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 7228 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7237 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 14: /* stmts: none  */
-#line 2128 "mrbgems/mruby-compiler/core/parse.y"
+#line 2137 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 7236 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7245 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 15: /* stmts: stmt  */
-#line 2132 "mrbgems/mruby-compiler/core/parse.y"
+#line 2141 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, (yyvsp[0].nd));
                     }
-#line 7244 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7253 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 16: /* stmts: stmts terms stmt  */
-#line 2136 "mrbgems/mruby-compiler/core/parse.y"
+#line 2145 "mrbgems/mruby-compiler/core/parse.y"
                     {
-                      /* Update the cons-list inside the existing variable-sized node */
-                      stmts_node((yyvsp[-2].nd))->stmts = push(stmts_node((yyvsp[-2].nd))->stmts, newline_node((yyvsp[0].nd)));
-                      (yyval.nd) = (yyvsp[-2].nd);
+                      (yyval.nd) = stmts_push(p, (yyvsp[-2].nd), newline_node((yyvsp[0].nd)));
                     }
-#line 7254 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7261 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 17: /* stmts: error stmt  */
-#line 2142 "mrbgems/mruby-compiler/core/parse.y"
+#line 2149 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, (yyvsp[0].nd));
                     }
-#line 7262 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7269 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 18: /* $@3: %empty  */
-#line 2147 "mrbgems/mruby-compiler/core/parse.y"
+#line 2154 "mrbgems/mruby-compiler/core/parse.y"
                                      {p->lstate = EXPR_FNAME;}
-#line 7268 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7275 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 19: /* stmt: "'alias'" fsym $@3 fsym  */
-#line 2148 "mrbgems/mruby-compiler/core/parse.y"
+#line 2155 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_alias(p, (yyvsp[-2].id), (yyvsp[0].id));
                     }
-#line 7276 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7283 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 20: /* stmt: "'undef'" undef_list  */
-#line 2152 "mrbgems/mruby-compiler/core/parse.y"
+#line 2159 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_undef(p, (yyvsp[0].nd));
                     }
-#line 7284 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7291 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 21: /* stmt: stmt "'if' modifier" expr_value  */
-#line 2156 "mrbgems/mruby-compiler/core/parse.y"
+#line 2163 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd), 0);
                     }
-#line 7292 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7299 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 22: /* stmt: stmt "'unless' modifier" expr_value  */
-#line 2160 "mrbgems/mruby-compiler/core/parse.y"
+#line 2167 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[0].nd)), 0, (yyvsp[-2].nd));
                     }
-#line 7300 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7307 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 23: /* stmt: stmt "'while' modifier" expr_value  */
-#line 2164 "mrbgems/mruby-compiler/core/parse.y"
+#line 2171 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[-2].nd) && node_type_p((yyvsp[-2].nd), NODE_BEGIN)) {
                         (yyval.nd) = new_while_mod(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd));
@@ -7309,11 +7316,11 @@ yyreduce:
                         (yyval.nd) = new_while(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd));
                       }
                     }
-#line 7313 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7320 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 24: /* stmt: stmt "'until' modifier" expr_value  */
-#line 2173 "mrbgems/mruby-compiler/core/parse.y"
+#line 2180 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[-2].nd) && node_type_p((yyvsp[-2].nd), NODE_BEGIN)) {
                         (yyval.nd) = new_until_mod(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd));
@@ -7322,127 +7329,127 @@ yyreduce:
                         (yyval.nd) = new_until(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd));
                       }
                     }
-#line 7326 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7333 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 25: /* stmt: stmt "'rescue' modifier" stmt  */
-#line 2182 "mrbgems/mruby-compiler/core/parse.y"
+#line 2189 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_mod_rescue(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7334 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7341 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 26: /* stmt: "'END'" '{' compstmt '}'  */
-#line 2186 "mrbgems/mruby-compiler/core/parse.y"
+#line 2193 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[-3]), p, "END not supported");
                       (yyval.nd) = new_postexe(p, (yyvsp[-1].nd));
                     }
-#line 7343 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7350 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 28: /* stmt: mlhs '=' command_call  */
-#line 2192 "mrbgems/mruby-compiler/core/parse.y"
+#line 2199 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7351 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7358 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 29: /* stmt: lhs '=' mrhs  */
-#line 2196 "mrbgems/mruby-compiler/core/parse.y"
+#line 2203 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_asgn(p, (yyvsp[-2].nd), new_array(p, (yyvsp[0].nd)));
                     }
-#line 7359 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7366 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 30: /* stmt: mlhs '=' arg  */
-#line 2200 "mrbgems/mruby-compiler/core/parse.y"
+#line 2207 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7367 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7374 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 31: /* stmt: mlhs '=' mrhs  */
-#line 2204 "mrbgems/mruby-compiler/core/parse.y"
+#line 2211 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-2].nd), new_array(p, (yyvsp[0].nd)));
                     }
-#line 7375 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7382 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 32: /* stmt: arg "=>" "local variable or method"  */
-#line 2208 "mrbgems/mruby-compiler/core/parse.y"
+#line 2215 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *lhs = new_lvar(p, (yyvsp[0].id));
                       assignable(p, lhs);
                       (yyval.nd) = new_asgn(p, lhs, (yyvsp[-2].nd));
                     }
-#line 7385 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7392 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 34: /* command_asgn: lhs '=' command_rhs  */
-#line 2217 "mrbgems/mruby-compiler/core/parse.y"
+#line 2224 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_asgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7393 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7400 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 35: /* command_asgn: var_lhs tOP_ASGN command_rhs  */
-#line 2221 "mrbgems/mruby-compiler/core/parse.y"
+#line 2228 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, (yyvsp[-2].nd), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7401 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7408 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 36: /* command_asgn: primary_value '[' opt_call_args ']' tOP_ASGN command_rhs  */
-#line 2225 "mrbgems/mruby-compiler/core/parse.y"
+#line 2232 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-5].nd), intern_op(aref), (yyvsp[-3].nd), '.'), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7409 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7416 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 37: /* command_asgn: primary_value call_op "local variable or method" tOP_ASGN command_rhs  */
-#line 2229 "mrbgems/mruby-compiler/core/parse.y"
+#line 2236 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, (yyvsp[-3].num)), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7417 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7424 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 38: /* command_asgn: primary_value call_op "constant" tOP_ASGN command_rhs  */
-#line 2233 "mrbgems/mruby-compiler/core/parse.y"
+#line 2240 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, (yyvsp[-3].num)), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7425 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7432 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 39: /* command_asgn: primary_value "::" "constant" tOP_ASGN command_call  */
-#line 2237 "mrbgems/mruby-compiler/core/parse.y"
+#line 2244 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[-4]), p, "constant re-assignment");
                       (yyval.nd) = 0;
                     }
-#line 7434 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7441 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 40: /* command_asgn: primary_value "::" "local variable or method" tOP_ASGN command_rhs  */
-#line 2242 "mrbgems/mruby-compiler/core/parse.y"
+#line 2249 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, tCOLON2), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7442 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7449 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 41: /* command_asgn: defn_head f_opt_arglist_paren '=' command  */
-#line 2246 "mrbgems/mruby-compiler/core/parse.y"
+#line 2253 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       endless_method_name(p, (yyvsp[-3].nd));
@@ -7451,11 +7458,11 @@ yyreduce:
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 7455 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7462 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 42: /* command_asgn: defn_head f_opt_arglist_paren '=' command "'rescue' modifier" arg  */
-#line 2255 "mrbgems/mruby-compiler/core/parse.y"
+#line 2262 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-5].nd);
                       endless_method_name(p, (yyvsp[-5].nd));
@@ -7464,11 +7471,11 @@ yyreduce:
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 7468 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7475 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 43: /* command_asgn: defs_head f_opt_arglist_paren '=' command  */
-#line 2264 "mrbgems/mruby-compiler/core/parse.y"
+#line 2271 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       void_expr_error(p, (yyvsp[0].nd));
@@ -7477,11 +7484,11 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 7481 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7488 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 44: /* command_asgn: defs_head f_opt_arglist_paren '=' command "'rescue' modifier" arg  */
-#line 2273 "mrbgems/mruby-compiler/core/parse.y"
+#line 2280 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-5].nd);
                       void_expr_error(p, (yyvsp[-2].nd));
@@ -7490,79 +7497,79 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 7494 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7501 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 45: /* command_asgn: backref tOP_ASGN command_rhs  */
-#line 2282 "mrbgems/mruby-compiler/core/parse.y"
+#line 2289 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 7503 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7510 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 47: /* command_rhs: command_call "'rescue' modifier" stmt  */
-#line 2290 "mrbgems/mruby-compiler/core/parse.y"
+#line 2297 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_mod_rescue(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7511 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7518 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 50: /* expr: expr "'and'" expr  */
-#line 2298 "mrbgems/mruby-compiler/core/parse.y"
+#line 2305 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_and(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7519 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7526 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 51: /* expr: expr "'or'" expr  */
-#line 2302 "mrbgems/mruby-compiler/core/parse.y"
+#line 2309 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_or(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7527 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7534 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 52: /* expr: "'not'" opt_nl expr  */
-#line 2306 "mrbgems/mruby-compiler/core/parse.y"
+#line 2313 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "!");
                     }
-#line 7535 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7542 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 53: /* expr: '!' command_call  */
-#line 2310 "mrbgems/mruby-compiler/core/parse.y"
+#line 2317 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "!");
                     }
-#line 7543 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7550 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 55: /* defn_head: "'def'" fname  */
-#line 2317 "mrbgems/mruby-compiler/core/parse.y"
+#line 2324 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_def(p, (yyvsp[0].id));
                       p->cmdarg_stack = 0;
                       p->in_def++;
                       nvars_block(p);
                     }
-#line 7554 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7561 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 56: /* $@4: %empty  */
-#line 2326 "mrbgems/mruby-compiler/core/parse.y"
+#line 2333 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_FNAME;
                     }
-#line 7562 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7569 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 57: /* defs_head: "'def'" singleton dot_or_colon $@4 fname  */
-#line 2330 "mrbgems/mruby-compiler/core/parse.y"
+#line 2337 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_sdef(p, (yyvsp[-3].nd), (yyvsp[0].id));
                       p->cmdarg_stack = 0;
@@ -7571,1054 +7578,1054 @@ yyreduce:
                       nvars_block(p);
                       p->lstate = EXPR_ENDFN; /* force for args */
                     }
-#line 7575 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7582 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 58: /* expr_value: expr  */
-#line 2341 "mrbgems/mruby-compiler/core/parse.y"
+#line 2348 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (!(yyvsp[0].nd)) (yyval.nd) = new_nil(p);
                       else {
                         (yyval.nd) = (yyvsp[0].nd);
                       }
                     }
-#line 7586 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7593 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 62: /* block_command: block_call call_op2 operation2 command_args  */
-#line 2355 "mrbgems/mruby-compiler/core/parse.y"
+#line 2362 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 7594 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7601 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 63: /* $@5: %empty  */
-#line 2361 "mrbgems/mruby-compiler/core/parse.y"
+#line 2368 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                     }
-#line 7603 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7610 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 64: /* cmd_brace_block: "{" $@5 opt_block_param compstmt '}'  */
-#line 2368 "mrbgems/mruby-compiler/core/parse.y"
+#line 2375 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block(p, (yyvsp[-2].nd), (yyvsp[-1].nd));
                       local_unnest(p);
                       nvars_unnest(p);
                     }
-#line 7613 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7620 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 65: /* command: operation command_args  */
-#line 2376 "mrbgems/mruby-compiler/core/parse.y"
+#line 2383 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7621 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7628 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 66: /* command: operation command_args cmd_brace_block  */
-#line 2380 "mrbgems/mruby-compiler/core/parse.y"
+#line 2387 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       args_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = new_fcall(p, (yyvsp[-2].id), (yyvsp[-1].nd));
                     }
-#line 7630 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7637 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 67: /* command: primary_value call_op operation2 command_args  */
-#line 2385 "mrbgems/mruby-compiler/core/parse.y"
+#line 2392 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 7638 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7645 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 68: /* command: primary_value call_op operation2 command_args cmd_brace_block  */
-#line 2389 "mrbgems/mruby-compiler/core/parse.y"
+#line 2396 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       args_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), (yyvsp[-1].nd), (yyvsp[-3].num));
                    }
-#line 7647 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7654 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 69: /* command: primary_value "::" operation2 command_args  */
-#line 2394 "mrbgems/mruby-compiler/core/parse.y"
+#line 2401 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), tCOLON2);
                     }
-#line 7655 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7662 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 70: /* command: primary_value "::" operation2 command_args cmd_brace_block  */
-#line 2398 "mrbgems/mruby-compiler/core/parse.y"
+#line 2405 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       args_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), (yyvsp[-1].nd), tCOLON2);
                     }
-#line 7664 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7671 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 71: /* command: "'super'" command_args  */
-#line 2403 "mrbgems/mruby-compiler/core/parse.y"
+#line 2410 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_super(p, (yyvsp[0].nd));
                     }
-#line 7672 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7679 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 72: /* command: "'yield'" command_args  */
-#line 2407 "mrbgems/mruby-compiler/core/parse.y"
+#line 2414 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_yield(p, (yyvsp[0].nd));
                     }
-#line 7680 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7687 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 73: /* command: "'return'" call_args  */
-#line 2411 "mrbgems/mruby-compiler/core/parse.y"
+#line 2418 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_return(p, ret_args(p, (yyvsp[0].nd)));
                     }
-#line 7688 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7695 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 74: /* command: "'break'" call_args  */
-#line 2415 "mrbgems/mruby-compiler/core/parse.y"
+#line 2422 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_break(p, ret_args(p, (yyvsp[0].nd)));
                     }
-#line 7696 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7703 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 75: /* command: "'next'" call_args  */
-#line 2419 "mrbgems/mruby-compiler/core/parse.y"
+#line 2426 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_next(p, ret_args(p, (yyvsp[0].nd)));
                     }
-#line 7704 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7711 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 76: /* mlhs: mlhs_basic  */
-#line 2425 "mrbgems/mruby-compiler/core/parse.y"
+#line 2432 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 7712 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7719 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 77: /* mlhs: tLPAREN mlhs_inner rparen  */
-#line 2429 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = (yyvsp[-1].nd);
-                    }
-#line 7720 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 79: /* mlhs_inner: tLPAREN mlhs_inner rparen  */
 #line 2436 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 7728 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7727 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 79: /* mlhs_inner: tLPAREN mlhs_inner rparen  */
+#line 2443 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = (yyvsp[-1].nd);
+                    }
+#line 7735 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 80: /* mlhs_basic: mlhs_list  */
-#line 2442 "mrbgems/mruby-compiler/core/parse.y"
+#line 2449 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 7736 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7743 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 81: /* mlhs_basic: mlhs_list mlhs_item  */
-#line 2446 "mrbgems/mruby-compiler/core/parse.y"
+#line 2453 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(push((yyvsp[-1].nd),(yyvsp[0].nd)));
                     }
-#line 7744 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7751 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 82: /* mlhs_basic: mlhs_list "*" mlhs_node  */
-#line 2450 "mrbgems/mruby-compiler/core/parse.y"
+#line 2457 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7752 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7759 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 83: /* mlhs_basic: mlhs_list "*" mlhs_node ',' mlhs_post  */
-#line 2454 "mrbgems/mruby-compiler/core/parse.y"
+#line 2461 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-4].nd), (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7760 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7767 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 84: /* mlhs_basic: mlhs_list "*"  */
-#line 2458 "mrbgems/mruby-compiler/core/parse.y"
+#line 2465 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2((yyvsp[-1].nd), new_nil(p));
                     }
-#line 7768 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7775 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 85: /* mlhs_basic: mlhs_list "*" ',' mlhs_post  */
-#line 2462 "mrbgems/mruby-compiler/core/parse.y"
+#line 2469 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-3].nd), new_nil(p), (yyvsp[0].nd));
                     }
-#line 7776 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7783 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 86: /* mlhs_basic: "*" mlhs_node  */
-#line 2466 "mrbgems/mruby-compiler/core/parse.y"
+#line 2473 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2(0, (yyvsp[0].nd));
                     }
-#line 7784 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7791 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 87: /* mlhs_basic: "*" mlhs_node ',' mlhs_post  */
-#line 2470 "mrbgems/mruby-compiler/core/parse.y"
+#line 2477 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7792 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7799 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 88: /* mlhs_basic: "*"  */
-#line 2474 "mrbgems/mruby-compiler/core/parse.y"
+#line 2481 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2(0, new_nil(p));
                     }
-#line 7800 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7807 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 89: /* mlhs_basic: "*" ',' mlhs_post  */
-#line 2478 "mrbgems/mruby-compiler/core/parse.y"
+#line 2485 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, new_nil(p), (yyvsp[0].nd));
                     }
-#line 7808 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7815 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 91: /* mlhs_item: tLPAREN mlhs_inner rparen  */
-#line 2485 "mrbgems/mruby-compiler/core/parse.y"
+#line 2492 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-1].nd), NULL);
                     }
-#line 7816 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7823 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 92: /* mlhs_list: mlhs_item ','  */
-#line 2491 "mrbgems/mruby-compiler/core/parse.y"
+#line 2498 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[-1].nd));
                     }
-#line 7824 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7831 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 93: /* mlhs_list: mlhs_list mlhs_item ','  */
-#line 2495 "mrbgems/mruby-compiler/core/parse.y"
+#line 2502 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[-1].nd));
                     }
-#line 7832 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7839 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 94: /* mlhs_post: mlhs_item  */
-#line 2501 "mrbgems/mruby-compiler/core/parse.y"
+#line 2508 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 7840 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7847 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 95: /* mlhs_post: mlhs_list mlhs_item  */
-#line 2505 "mrbgems/mruby-compiler/core/parse.y"
+#line 2512 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 7848 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7855 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 96: /* mlhs_node: variable  */
-#line 2511 "mrbgems/mruby-compiler/core/parse.y"
+#line 2518 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       assignable(p, (yyvsp[0].nd));
                     }
-#line 7856 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7863 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 97: /* mlhs_node: primary_value '[' opt_call_args ']'  */
-#line 2515 "mrbgems/mruby-compiler/core/parse.y"
+#line 2522 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), intern_op(aref), (yyvsp[-1].nd), '.');
                     }
-#line 7864 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7871 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 98: /* mlhs_node: primary_value call_op "local variable or method"  */
-#line 2519 "mrbgems/mruby-compiler/core/parse.y"
+#line 2526 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 7872 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7879 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 99: /* mlhs_node: primary_value "::" "local variable or method"  */
-#line 2523 "mrbgems/mruby-compiler/core/parse.y"
+#line 2530 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, tCOLON2);
                     }
-#line 7880 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7887 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 100: /* mlhs_node: primary_value call_op "constant"  */
-#line 2527 "mrbgems/mruby-compiler/core/parse.y"
+#line 2534 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 7888 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7895 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 101: /* mlhs_node: primary_value "::" "constant"  */
-#line 2531 "mrbgems/mruby-compiler/core/parse.y"
+#line 2538 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-2]), p, "dynamic constant assignment");
                       (yyval.nd) = new_colon2(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 7898 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7905 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 102: /* mlhs_node: tCOLON3 "constant"  */
-#line 2537 "mrbgems/mruby-compiler/core/parse.y"
+#line 2544 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-1]), p, "dynamic constant assignment");
                       (yyval.nd) = new_colon3(p, (yyvsp[0].id));
                     }
-#line 7908 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7915 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 103: /* mlhs_node: backref  */
-#line 2543 "mrbgems/mruby-compiler/core/parse.y"
+#line 2550 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[0].nd));
                       (yyval.nd) = 0;
                     }
-#line 7917 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7924 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 104: /* lhs: variable  */
-#line 2550 "mrbgems/mruby-compiler/core/parse.y"
+#line 2557 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       assignable(p, (yyvsp[0].nd));
                     }
-#line 7925 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7932 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 105: /* lhs: primary_value '[' opt_call_args ']'  */
-#line 2554 "mrbgems/mruby-compiler/core/parse.y"
+#line 2561 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), intern_op(aref), (yyvsp[-1].nd), '.');
                     }
-#line 7933 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7940 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 106: /* lhs: primary_value call_op "local variable or method"  */
-#line 2558 "mrbgems/mruby-compiler/core/parse.y"
+#line 2565 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 7941 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7948 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 107: /* lhs: primary_value "::" "local variable or method"  */
-#line 2562 "mrbgems/mruby-compiler/core/parse.y"
+#line 2569 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, tCOLON2);
                     }
-#line 7949 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7956 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 108: /* lhs: primary_value call_op "constant"  */
-#line 2566 "mrbgems/mruby-compiler/core/parse.y"
+#line 2573 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 7957 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7964 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 109: /* lhs: primary_value "::" "constant"  */
-#line 2570 "mrbgems/mruby-compiler/core/parse.y"
+#line 2577 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-2]), p, "dynamic constant assignment");
                       (yyval.nd) = new_colon2(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 7967 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7974 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 110: /* lhs: tCOLON3 "constant"  */
-#line 2576 "mrbgems/mruby-compiler/core/parse.y"
+#line 2583 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-1]), p, "dynamic constant assignment");
                       (yyval.nd) = new_colon3(p, (yyvsp[0].id));
                     }
-#line 7977 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7984 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 111: /* lhs: backref  */
-#line 2582 "mrbgems/mruby-compiler/core/parse.y"
+#line 2589 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[0].nd));
                       (yyval.nd) = 0;
                     }
-#line 7986 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7993 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 112: /* lhs: "numbered parameter"  */
-#line 2587 "mrbgems/mruby-compiler/core/parse.y"
+#line 2594 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "can't assign to numbered parameter");
                     }
-#line 7994 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8001 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 113: /* cname: "local variable or method"  */
-#line 2593 "mrbgems/mruby-compiler/core/parse.y"
+#line 2600 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "class/module name must be CONSTANT");
                     }
-#line 8002 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8009 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 115: /* cpath: tCOLON3 cname  */
-#line 2600 "mrbgems/mruby-compiler/core/parse.y"
+#line 2607 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(int_to_node(1), sym_to_node((yyvsp[0].id)));
                     }
-#line 8010 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8017 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 116: /* cpath: cname  */
-#line 2604 "mrbgems/mruby-compiler/core/parse.y"
+#line 2611 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(int_to_node(0), sym_to_node((yyvsp[0].id)));
                     }
-#line 8018 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8025 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 117: /* cpath: primary_value "::" cname  */
-#line 2608 "mrbgems/mruby-compiler/core/parse.y"
+#line 2615 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = cons((yyvsp[-2].nd), sym_to_node((yyvsp[0].id)));
                     }
-#line 8027 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8034 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 121: /* fname: op  */
-#line 2618 "mrbgems/mruby-compiler/core/parse.y"
+#line 2625 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_ENDFN;
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 8036 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8043 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 122: /* fname: reswords  */
-#line 2623 "mrbgems/mruby-compiler/core/parse.y"
+#line 2630 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_ENDFN;
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 8045 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8052 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 125: /* undef_list: fsym  */
-#line 2634 "mrbgems/mruby-compiler/core/parse.y"
+#line 2641 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(sym_to_node((yyvsp[0].id)), 0);
                     }
-#line 8053 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8060 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 126: /* $@6: %empty  */
-#line 2637 "mrbgems/mruby-compiler/core/parse.y"
+#line 2644 "mrbgems/mruby-compiler/core/parse.y"
                                  {p->lstate = EXPR_FNAME;}
-#line 8059 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8066 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 127: /* undef_list: undef_list ',' $@6 fsym  */
-#line 2638 "mrbgems/mruby-compiler/core/parse.y"
+#line 2645 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-3].nd), sym_to_node((yyvsp[0].id)));
                     }
-#line 8067 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8074 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 128: /* op: '|'  */
-#line 2643 "mrbgems/mruby-compiler/core/parse.y"
+#line 2650 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(or);     }
-#line 8073 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8080 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 129: /* op: '^'  */
-#line 2644 "mrbgems/mruby-compiler/core/parse.y"
+#line 2651 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(xor);    }
-#line 8079 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8086 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 130: /* op: '&'  */
-#line 2645 "mrbgems/mruby-compiler/core/parse.y"
+#line 2652 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(and);    }
-#line 8085 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8092 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 131: /* op: "<=>"  */
-#line 2646 "mrbgems/mruby-compiler/core/parse.y"
+#line 2653 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(cmp);    }
-#line 8091 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8098 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 132: /* op: "=="  */
-#line 2647 "mrbgems/mruby-compiler/core/parse.y"
+#line 2654 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(eq);     }
-#line 8097 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8104 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 133: /* op: "==="  */
-#line 2648 "mrbgems/mruby-compiler/core/parse.y"
+#line 2655 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(eqq);    }
-#line 8103 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8110 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 134: /* op: "=~"  */
-#line 2649 "mrbgems/mruby-compiler/core/parse.y"
+#line 2656 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(match);  }
-#line 8109 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8116 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 135: /* op: "!~"  */
-#line 2650 "mrbgems/mruby-compiler/core/parse.y"
+#line 2657 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(nmatch); }
-#line 8115 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8122 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 136: /* op: '>'  */
-#line 2651 "mrbgems/mruby-compiler/core/parse.y"
+#line 2658 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(gt);     }
-#line 8121 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8128 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 137: /* op: ">="  */
-#line 2652 "mrbgems/mruby-compiler/core/parse.y"
+#line 2659 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(ge);     }
-#line 8127 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8134 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 138: /* op: '<'  */
-#line 2653 "mrbgems/mruby-compiler/core/parse.y"
+#line 2660 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(lt);     }
-#line 8133 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8140 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 139: /* op: "<="  */
-#line 2654 "mrbgems/mruby-compiler/core/parse.y"
+#line 2661 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(le);     }
-#line 8139 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8146 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 140: /* op: "!="  */
-#line 2655 "mrbgems/mruby-compiler/core/parse.y"
+#line 2662 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(neq);    }
-#line 8145 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8152 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 141: /* op: "<<"  */
-#line 2656 "mrbgems/mruby-compiler/core/parse.y"
+#line 2663 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(lshift); }
-#line 8151 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8158 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 142: /* op: ">>"  */
-#line 2657 "mrbgems/mruby-compiler/core/parse.y"
+#line 2664 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(rshift); }
-#line 8157 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8164 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 143: /* op: '+'  */
-#line 2658 "mrbgems/mruby-compiler/core/parse.y"
+#line 2665 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(add);    }
-#line 8163 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8170 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 144: /* op: '-'  */
-#line 2659 "mrbgems/mruby-compiler/core/parse.y"
+#line 2666 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(sub);    }
-#line 8169 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8176 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 145: /* op: '*'  */
-#line 2660 "mrbgems/mruby-compiler/core/parse.y"
+#line 2667 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(mul);    }
-#line 8175 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8182 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 146: /* op: "*"  */
-#line 2661 "mrbgems/mruby-compiler/core/parse.y"
+#line 2668 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(mul);    }
-#line 8181 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8188 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 147: /* op: '/'  */
-#line 2662 "mrbgems/mruby-compiler/core/parse.y"
+#line 2669 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(div);    }
-#line 8187 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8194 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 148: /* op: '%'  */
-#line 2663 "mrbgems/mruby-compiler/core/parse.y"
+#line 2670 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(mod);    }
-#line 8193 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8200 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 149: /* op: tPOW  */
-#line 2664 "mrbgems/mruby-compiler/core/parse.y"
+#line 2671 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(pow);    }
-#line 8199 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8206 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 150: /* op: "**"  */
-#line 2665 "mrbgems/mruby-compiler/core/parse.y"
+#line 2672 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(pow);    }
-#line 8205 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8212 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 151: /* op: '!'  */
-#line 2666 "mrbgems/mruby-compiler/core/parse.y"
+#line 2673 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(not);    }
-#line 8211 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8218 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 152: /* op: '~'  */
-#line 2667 "mrbgems/mruby-compiler/core/parse.y"
+#line 2674 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(neg);    }
-#line 8217 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8224 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 153: /* op: "unary plus"  */
-#line 2668 "mrbgems/mruby-compiler/core/parse.y"
+#line 2675 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(plus);   }
-#line 8223 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8230 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 154: /* op: "unary minus"  */
-#line 2669 "mrbgems/mruby-compiler/core/parse.y"
+#line 2676 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(minus);  }
-#line 8229 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8236 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 155: /* op: tAREF  */
-#line 2670 "mrbgems/mruby-compiler/core/parse.y"
+#line 2677 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(aref);   }
-#line 8235 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8242 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 156: /* op: tASET  */
-#line 2671 "mrbgems/mruby-compiler/core/parse.y"
+#line 2678 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(aset);   }
-#line 8241 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8248 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 157: /* op: '`'  */
-#line 2672 "mrbgems/mruby-compiler/core/parse.y"
+#line 2679 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(tick);   }
-#line 8247 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8254 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 198: /* arg: lhs '=' arg_rhs  */
-#line 2690 "mrbgems/mruby-compiler/core/parse.y"
+#line 2697 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_asgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8255 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8262 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 199: /* arg: var_lhs tOP_ASGN arg_rhs  */
-#line 2694 "mrbgems/mruby-compiler/core/parse.y"
+#line 2701 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, (yyvsp[-2].nd), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 8263 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8270 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 200: /* arg: primary_value '[' opt_call_args ']' tOP_ASGN arg_rhs  */
-#line 2698 "mrbgems/mruby-compiler/core/parse.y"
+#line 2705 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-5].nd), intern_op(aref), (yyvsp[-3].nd), '.'), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 8271 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8278 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 201: /* arg: primary_value call_op "local variable or method" tOP_ASGN arg_rhs  */
-#line 2702 "mrbgems/mruby-compiler/core/parse.y"
+#line 2709 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, (yyvsp[-3].num)), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 8279 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8286 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 202: /* arg: primary_value call_op "constant" tOP_ASGN arg_rhs  */
-#line 2706 "mrbgems/mruby-compiler/core/parse.y"
+#line 2713 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, (yyvsp[-3].num)), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 8287 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8294 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 203: /* arg: primary_value "::" "local variable or method" tOP_ASGN arg_rhs  */
-#line 2710 "mrbgems/mruby-compiler/core/parse.y"
+#line 2717 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, tCOLON2), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 8295 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8302 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 204: /* arg: primary_value "::" "constant" tOP_ASGN arg_rhs  */
-#line 2714 "mrbgems/mruby-compiler/core/parse.y"
+#line 2721 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[-4]), p, "constant re-assignment");
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 8304 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8311 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 205: /* arg: tCOLON3 "constant" tOP_ASGN arg_rhs  */
-#line 2719 "mrbgems/mruby-compiler/core/parse.y"
+#line 2726 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[-3]), p, "constant re-assignment");
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 8313 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8320 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 206: /* arg: backref tOP_ASGN arg_rhs  */
-#line 2724 "mrbgems/mruby-compiler/core/parse.y"
+#line 2731 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 8322 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8329 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 207: /* arg: arg ".." arg  */
-#line 2729 "mrbgems/mruby-compiler/core/parse.y"
+#line 2736 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot2(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8330 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8337 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 208: /* arg: arg ".."  */
-#line 2733 "mrbgems/mruby-compiler/core/parse.y"
+#line 2740 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot2(p, (yyvsp[-1].nd), new_nil(p));
                     }
-#line 8338 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8345 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 209: /* arg: tBDOT2 arg  */
-#line 2737 "mrbgems/mruby-compiler/core/parse.y"
+#line 2744 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot2(p, new_nil(p), (yyvsp[0].nd));
                     }
-#line 8346 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8353 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 210: /* arg: arg "..." arg  */
-#line 2741 "mrbgems/mruby-compiler/core/parse.y"
+#line 2748 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot3(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8354 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8361 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 211: /* arg: arg "..."  */
-#line 2745 "mrbgems/mruby-compiler/core/parse.y"
+#line 2752 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot3(p, (yyvsp[-1].nd), new_nil(p));
                     }
-#line 8362 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8369 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 212: /* arg: tBDOT3 arg  */
-#line 2749 "mrbgems/mruby-compiler/core/parse.y"
+#line 2756 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot3(p, new_nil(p), (yyvsp[0].nd));
                     }
-#line 8370 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8377 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 213: /* arg: arg '+' arg  */
-#line 2753 "mrbgems/mruby-compiler/core/parse.y"
+#line 2760 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "+", (yyvsp[0].nd));
                     }
-#line 8378 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8385 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 214: /* arg: arg '-' arg  */
-#line 2757 "mrbgems/mruby-compiler/core/parse.y"
+#line 2764 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "-", (yyvsp[0].nd));
                     }
-#line 8386 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8393 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 215: /* arg: arg '*' arg  */
-#line 2761 "mrbgems/mruby-compiler/core/parse.y"
+#line 2768 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "*", (yyvsp[0].nd));
                     }
-#line 8394 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8401 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 216: /* arg: arg '/' arg  */
-#line 2765 "mrbgems/mruby-compiler/core/parse.y"
+#line 2772 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "/", (yyvsp[0].nd));
                     }
-#line 8402 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8409 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 217: /* arg: arg '%' arg  */
-#line 2769 "mrbgems/mruby-compiler/core/parse.y"
+#line 2776 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "%", (yyvsp[0].nd));
                     }
-#line 8410 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8417 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 218: /* arg: arg tPOW arg  */
-#line 2773 "mrbgems/mruby-compiler/core/parse.y"
+#line 2780 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "**", (yyvsp[0].nd));
                     }
-#line 8418 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8425 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 219: /* arg: tUMINUS_NUM "integer literal" tPOW arg  */
-#line 2777 "mrbgems/mruby-compiler/core/parse.y"
+#line 2784 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_negate(p, call_bin_op(p, (yyvsp[-2].nd), "**", (yyvsp[0].nd)));
                     }
-#line 8426 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8433 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 220: /* arg: tUMINUS_NUM "float literal" tPOW arg  */
-#line 2781 "mrbgems/mruby-compiler/core/parse.y"
+#line 2788 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_negate(p, call_bin_op(p, (yyvsp[-2].nd), "**", (yyvsp[0].nd)));
                     }
-#line 8434 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8441 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 221: /* arg: "unary plus" arg  */
-#line 2785 "mrbgems/mruby-compiler/core/parse.y"
+#line 2792 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, (yyvsp[0].nd), "+@");
                     }
-#line 8442 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8449 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 222: /* arg: "unary minus" arg  */
-#line 2789 "mrbgems/mruby-compiler/core/parse.y"
+#line 2796 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_negate(p, (yyvsp[0].nd));
                     }
-#line 8450 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8457 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 223: /* arg: arg '|' arg  */
-#line 2793 "mrbgems/mruby-compiler/core/parse.y"
+#line 2800 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "|", (yyvsp[0].nd));
                     }
-#line 8458 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8465 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 224: /* arg: arg '^' arg  */
-#line 2797 "mrbgems/mruby-compiler/core/parse.y"
+#line 2804 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "^", (yyvsp[0].nd));
                     }
-#line 8466 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8473 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 225: /* arg: arg '&' arg  */
-#line 2801 "mrbgems/mruby-compiler/core/parse.y"
+#line 2808 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "&", (yyvsp[0].nd));
                     }
-#line 8474 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8481 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 226: /* arg: arg "<=>" arg  */
-#line 2805 "mrbgems/mruby-compiler/core/parse.y"
+#line 2812 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<=>", (yyvsp[0].nd));
                     }
-#line 8482 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8489 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 227: /* arg: arg '>' arg  */
-#line 2809 "mrbgems/mruby-compiler/core/parse.y"
+#line 2816 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), ">", (yyvsp[0].nd));
                     }
-#line 8490 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8497 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 228: /* arg: arg ">=" arg  */
-#line 2813 "mrbgems/mruby-compiler/core/parse.y"
+#line 2820 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), ">=", (yyvsp[0].nd));
                     }
-#line 8498 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8505 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 229: /* arg: arg '<' arg  */
-#line 2817 "mrbgems/mruby-compiler/core/parse.y"
+#line 2824 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<", (yyvsp[0].nd));
                     }
-#line 8506 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8513 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 230: /* arg: arg "<=" arg  */
-#line 2821 "mrbgems/mruby-compiler/core/parse.y"
+#line 2828 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<=", (yyvsp[0].nd));
                     }
-#line 8514 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8521 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 231: /* arg: arg "==" arg  */
-#line 2825 "mrbgems/mruby-compiler/core/parse.y"
+#line 2832 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "==", (yyvsp[0].nd));
                     }
-#line 8522 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8529 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 232: /* arg: arg "===" arg  */
-#line 2829 "mrbgems/mruby-compiler/core/parse.y"
+#line 2836 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "===", (yyvsp[0].nd));
                     }
-#line 8530 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8537 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 233: /* arg: arg "!=" arg  */
-#line 2833 "mrbgems/mruby-compiler/core/parse.y"
+#line 2840 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "!=", (yyvsp[0].nd));
                     }
-#line 8538 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8545 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 234: /* arg: arg "=~" arg  */
-#line 2837 "mrbgems/mruby-compiler/core/parse.y"
+#line 2844 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "=~", (yyvsp[0].nd));
                     }
-#line 8546 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8553 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 235: /* arg: arg "!~" arg  */
-#line 2841 "mrbgems/mruby-compiler/core/parse.y"
+#line 2848 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "!~", (yyvsp[0].nd));
                     }
-#line 8554 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8561 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 236: /* arg: '!' arg  */
-#line 2845 "mrbgems/mruby-compiler/core/parse.y"
+#line 2852 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "!");
                     }
-#line 8562 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8569 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 237: /* arg: '~' arg  */
-#line 2849 "mrbgems/mruby-compiler/core/parse.y"
+#line 2856 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "~");
                     }
-#line 8570 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8577 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 238: /* arg: arg "<<" arg  */
-#line 2853 "mrbgems/mruby-compiler/core/parse.y"
+#line 2860 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<<", (yyvsp[0].nd));
                     }
-#line 8578 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8585 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 239: /* arg: arg ">>" arg  */
-#line 2857 "mrbgems/mruby-compiler/core/parse.y"
+#line 2864 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), ">>", (yyvsp[0].nd));
                     }
-#line 8586 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8593 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 240: /* arg: arg "&&" arg  */
-#line 2861 "mrbgems/mruby-compiler/core/parse.y"
+#line 2868 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_and(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8594 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8601 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 241: /* arg: arg "||" arg  */
-#line 2865 "mrbgems/mruby-compiler/core/parse.y"
+#line 2872 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_or(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8602 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8609 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 242: /* arg: arg '?' arg opt_nl ':' arg  */
-#line 2869 "mrbgems/mruby-compiler/core/parse.y"
+#line 2876 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-5].nd)), (yyvsp[-3].nd), (yyvsp[0].nd));
                     }
-#line 8610 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8617 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 243: /* arg: arg '?' arg opt_nl "label" arg  */
-#line 2873 "mrbgems/mruby-compiler/core/parse.y"
+#line 2880 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-5].nd)), (yyvsp[-3].nd), (yyvsp[0].nd));
                     }
-#line 8618 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8625 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 244: /* arg: defn_head f_opt_arglist_paren '=' arg  */
-#line 2877 "mrbgems/mruby-compiler/core/parse.y"
+#line 2884 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       endless_method_name(p, (yyvsp[-3].nd));
@@ -8627,11 +8634,11 @@ yyreduce:
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 8631 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8638 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 245: /* arg: defn_head f_opt_arglist_paren '=' arg "'rescue' modifier" arg  */
-#line 2886 "mrbgems/mruby-compiler/core/parse.y"
+#line 2893 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-5].nd);
                       endless_method_name(p, (yyvsp[-5].nd));
@@ -8640,11 +8647,11 @@ yyreduce:
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 8644 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8651 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 246: /* arg: defs_head f_opt_arglist_paren '=' arg  */
-#line 2895 "mrbgems/mruby-compiler/core/parse.y"
+#line 2902 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       void_expr_error(p, (yyvsp[0].nd));
@@ -8653,11 +8660,11 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 8657 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8664 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 247: /* arg: defs_head f_opt_arglist_paren '=' arg "'rescue' modifier" arg  */
-#line 2904 "mrbgems/mruby-compiler/core/parse.y"
+#line 2911 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-5].nd);
                       void_expr_error(p, (yyvsp[-2].nd));
@@ -8666,68 +8673,68 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 8670 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8677 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 248: /* arg: primary  */
-#line 2913 "mrbgems/mruby-compiler/core/parse.y"
+#line 2920 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8678 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8685 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 250: /* aref_args: args trailer  */
-#line 2920 "mrbgems/mruby-compiler/core/parse.y"
+#line 2927 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 8686 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8693 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 251: /* aref_args: args comma assocs trailer  */
-#line 2924 "mrbgems/mruby-compiler/core/parse.y"
+#line 2931 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-3].nd), new_hash(p, (yyvsp[-1].nd)));
                     }
-#line 8694 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8701 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 252: /* aref_args: assocs trailer  */
-#line 2928 "mrbgems/mruby-compiler/core/parse.y"
+#line 2935 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(new_hash(p, (yyvsp[-1].nd)), 0);
                     }
-#line 8702 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8709 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 253: /* arg_rhs: arg  */
-#line 2934 "mrbgems/mruby-compiler/core/parse.y"
+#line 2941 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8710 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8717 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 254: /* arg_rhs: arg "'rescue' modifier" arg  */
-#line 2938 "mrbgems/mruby-compiler/core/parse.y"
+#line 2945 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = new_mod_rescue(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8719 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8726 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 255: /* paren_args: '(' opt_call_args ')'  */
-#line 2945 "mrbgems/mruby-compiler/core/parse.y"
+#line 2952 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 8727 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8734 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 256: /* paren_args: '(' args comma tBDOT3 rparen  */
-#line 2949 "mrbgems/mruby-compiler/core/parse.y"
+#line 2956 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       mrb_sym r = intern_op(mul);
                       mrb_sym k = intern_op(pow);
@@ -8736,11 +8743,11 @@ yyreduce:
                                         list1(cons(new_kw_rest_args(p, 0), new_lvar(p, k))),
                                         new_block_arg(p, new_lvar(p, b)));
                     }
-#line 8740 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8747 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 257: /* paren_args: '(' tBDOT3 rparen  */
-#line 2958 "mrbgems/mruby-compiler/core/parse.y"
+#line 2965 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       mrb_sym r = intern_op(mul);
                       mrb_sym k = intern_op(pow);
@@ -8755,390 +8762,390 @@ yyreduce:
                         (yyval.nd) = 0;
                       }
                     }
-#line 8759 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8766 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 262: /* opt_call_args: args comma  */
-#line 2981 "mrbgems/mruby-compiler/core/parse.y"
+#line 2988 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p,(yyvsp[-1].nd),0,0);
                     }
-#line 8767 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8774 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 263: /* opt_call_args: args comma assocs comma  */
-#line 2985 "mrbgems/mruby-compiler/core/parse.y"
+#line 2992 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p,(yyvsp[-3].nd),(yyvsp[-1].nd),0);
                     }
-#line 8775 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8782 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 264: /* opt_call_args: assocs comma  */
-#line 2989 "mrbgems/mruby-compiler/core/parse.y"
+#line 2996 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p,0,(yyvsp[-1].nd),0);
                     }
-#line 8783 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8790 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 265: /* call_args: command  */
-#line 2995 "mrbgems/mruby-compiler/core/parse.y"
+#line 3002 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = new_callargs(p, list1((yyvsp[0].nd)), 0, 0);
                     }
-#line 8792 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8799 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 266: /* call_args: args opt_block_arg  */
-#line 3000 "mrbgems/mruby-compiler/core/parse.y"
+#line 3007 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p, (yyvsp[-1].nd), 0, (yyvsp[0].nd));
                     }
-#line 8800 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8807 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 267: /* call_args: assocs opt_block_arg  */
-#line 3004 "mrbgems/mruby-compiler/core/parse.y"
+#line 3011 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p, 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 8808 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8815 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 268: /* call_args: args comma assocs opt_block_arg  */
-#line 3008 "mrbgems/mruby-compiler/core/parse.y"
+#line 3015 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p, (yyvsp[-3].nd), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 8816 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8823 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 269: /* call_args: block_arg  */
-#line 3012 "mrbgems/mruby-compiler/core/parse.y"
+#line 3019 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p, 0, 0, (yyvsp[0].nd));
                     }
-#line 8824 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8831 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 270: /* @7: %empty  */
-#line 3017 "mrbgems/mruby-compiler/core/parse.y"
+#line 3024 "mrbgems/mruby-compiler/core/parse.y"
                    {
                       (yyval.stack) = p->cmdarg_stack;
                       CMDARG_PUSH(1);
                     }
-#line 8833 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8840 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 271: /* command_args: @7 call_args  */
-#line 3022 "mrbgems/mruby-compiler/core/parse.y"
+#line 3029 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->cmdarg_stack = (yyvsp[-1].stack);
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8842 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8849 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 272: /* block_arg: "&" arg  */
-#line 3029 "mrbgems/mruby-compiler/core/parse.y"
+#line 3036 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block_arg(p, (yyvsp[0].nd));
                     }
-#line 8850 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8857 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 273: /* block_arg: "&"  */
-#line 3033 "mrbgems/mruby-compiler/core/parse.y"
+#line 3040 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block_arg(p, 0);
                     }
-#line 8858 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8865 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 274: /* opt_block_arg: comma block_arg  */
-#line 3039 "mrbgems/mruby-compiler/core/parse.y"
+#line 3046 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8866 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8873 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 275: /* opt_block_arg: none  */
-#line 3043 "mrbgems/mruby-compiler/core/parse.y"
+#line 3050 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 8874 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8881 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 277: /* args: arg  */
-#line 3052 "mrbgems/mruby-compiler/core/parse.y"
+#line 3059 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 8883 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8890 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 278: /* args: "*"  */
-#line 3057 "mrbgems/mruby-compiler/core/parse.y"
+#line 3064 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_splat(p, new_lvar(p, intern_op(mul))));
                     }
-#line 8891 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8898 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 279: /* args: "*" arg  */
-#line 3061 "mrbgems/mruby-compiler/core/parse.y"
+#line 3068 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_splat(p, (yyvsp[0].nd)));
                     }
-#line 8899 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8906 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 280: /* args: args comma arg  */
-#line 3065 "mrbgems/mruby-compiler/core/parse.y"
+#line 3072 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8908 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8915 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 281: /* args: args comma "*"  */
-#line 3070 "mrbgems/mruby-compiler/core/parse.y"
+#line 3077 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), new_splat(p, new_lvar(p, intern_op(mul))));
                     }
-#line 8916 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8923 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 282: /* args: args comma "*" arg  */
-#line 3074 "mrbgems/mruby-compiler/core/parse.y"
+#line 3081 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-3].nd), new_splat(p, (yyvsp[0].nd)));
                     }
-#line 8924 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8931 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 283: /* mrhs: args comma arg  */
-#line 3080 "mrbgems/mruby-compiler/core/parse.y"
+#line 3087 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8933 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8940 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 284: /* mrhs: args comma "*" arg  */
-#line 3085 "mrbgems/mruby-compiler/core/parse.y"
+#line 3092 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-3].nd), new_splat(p, (yyvsp[0].nd)));
                     }
-#line 8941 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8948 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 285: /* mrhs: "*" arg  */
-#line 3089 "mrbgems/mruby-compiler/core/parse.y"
+#line 3096 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_splat(p, (yyvsp[0].nd)));
                     }
-#line 8949 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8956 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 287: /* primary: string  */
-#line 3096 "mrbgems/mruby-compiler/core/parse.y"
+#line 3103 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_str(p, (yyvsp[0].nd));
                     }
-#line 8957 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8964 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 288: /* primary: xstring  */
-#line 3100 "mrbgems/mruby-compiler/core/parse.y"
+#line 3107 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_xstr(p, (yyvsp[0].nd));
                     }
-#line 8965 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8972 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 293: /* primary: "method"  */
-#line 3108 "mrbgems/mruby-compiler/core/parse.y"
+#line 3115 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[0].id), 0);
                     }
-#line 8973 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8980 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 294: /* @8: %empty  */
-#line 3112 "mrbgems/mruby-compiler/core/parse.y"
+#line 3119 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.stack) = p->cmdarg_stack;
                       p->cmdarg_stack = 0;
                     }
-#line 8982 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8989 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 295: /* primary: "'begin'" @8 bodystmt "'end'"  */
-#line 3118 "mrbgems/mruby-compiler/core/parse.y"
+#line 3125 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->cmdarg_stack = (yyvsp[-2].stack);
                       (yyval.nd) = new_begin(p, (yyvsp[-1].nd));
                     }
-#line 8991 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8998 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 296: /* @9: %empty  */
-#line 3123 "mrbgems/mruby-compiler/core/parse.y"
+#line 3130 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.stack) = p->cmdarg_stack;
                       p->cmdarg_stack = 0;
                     }
-#line 9000 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9007 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 297: /* $@10: %empty  */
-#line 3127 "mrbgems/mruby-compiler/core/parse.y"
+#line 3134 "mrbgems/mruby-compiler/core/parse.y"
                        {p->lstate = EXPR_ENDARG;}
-#line 9006 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9013 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 298: /* primary: "(" @9 stmt $@10 rparen  */
-#line 3128 "mrbgems/mruby-compiler/core/parse.y"
+#line 3135 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->cmdarg_stack = (yyvsp[-3].stack);
                       (yyval.nd) = (yyvsp[-2].nd);
                     }
-#line 9015 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9022 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 299: /* $@11: %empty  */
-#line 3132 "mrbgems/mruby-compiler/core/parse.y"
+#line 3139 "mrbgems/mruby-compiler/core/parse.y"
                               {p->lstate = EXPR_ENDARG;}
-#line 9021 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9028 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 300: /* primary: "(" $@11 rparen  */
-#line 3133 "mrbgems/mruby-compiler/core/parse.y"
+#line 3140 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_nil(p);
                     }
-#line 9029 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9036 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 301: /* primary: tLPAREN compstmt ')'  */
-#line 3137 "mrbgems/mruby-compiler/core/parse.y"
+#line 3144 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9037 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9044 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 302: /* primary: primary_value "::" "constant"  */
-#line 3141 "mrbgems/mruby-compiler/core/parse.y"
+#line 3148 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_colon2(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 9045 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9052 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 303: /* primary: tCOLON3 "constant"  */
-#line 3145 "mrbgems/mruby-compiler/core/parse.y"
+#line 3152 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_colon3(p, (yyvsp[0].id));
                     }
-#line 9053 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9060 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 304: /* primary: "[" aref_args ']'  */
-#line 3149 "mrbgems/mruby-compiler/core/parse.y"
+#line 3156 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_array(p, (yyvsp[-1].nd));
                     }
-#line 9061 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9068 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 305: /* primary: tLBRACE assoc_list '}'  */
-#line 3153 "mrbgems/mruby-compiler/core/parse.y"
+#line 3160 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_hash(p, (yyvsp[-1].nd));
                     }
-#line 9069 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9076 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 306: /* primary: "'return'"  */
-#line 3157 "mrbgems/mruby-compiler/core/parse.y"
+#line 3164 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_return(p, 0);
                     }
-#line 9077 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9084 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 307: /* primary: "'yield'" opt_paren_args  */
-#line 3161 "mrbgems/mruby-compiler/core/parse.y"
+#line 3168 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_yield(p, (yyvsp[0].nd));
                     }
-#line 9085 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9092 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 308: /* primary: "'not'" '(' expr rparen  */
-#line 3165 "mrbgems/mruby-compiler/core/parse.y"
+#line 3172 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[-1].nd)), "!");
                     }
-#line 9093 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9100 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 309: /* primary: "'not'" '(' rparen  */
-#line 3169 "mrbgems/mruby-compiler/core/parse.y"
+#line 3176 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, new_nil(p), "!");
                     }
-#line 9101 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9108 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 310: /* primary: operation brace_block  */
-#line 3173 "mrbgems/mruby-compiler/core/parse.y"
+#line 3180 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[-1].id), new_callargs(p, 0, 0, (yyvsp[0].nd)));
                     }
-#line 9109 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9116 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 312: /* primary: method_call brace_block  */
-#line 3178 "mrbgems/mruby-compiler/core/parse.y"
+#line 3185 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       call_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9118 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9125 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 313: /* @12: %empty  */
-#line 3183 "mrbgems/mruby-compiler/core/parse.y"
+#line 3190 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                       (yyval.num) = p->lpar_beg;
                       p->lpar_beg = ++p->paren_nest;
                     }
-#line 9129 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9136 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 314: /* @13: %empty  */
-#line 3190 "mrbgems/mruby-compiler/core/parse.y"
+#line 3197 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.stack) = p->cmdarg_stack;
                       p->cmdarg_stack = 0;
                     }
-#line 9138 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9145 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 315: /* primary: "->" @12 f_larglist @13 lambda_body  */
-#line 3195 "mrbgems/mruby-compiler/core/parse.y"
+#line 3202 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lpar_beg = (yyvsp[-3].num);
                       (yyval.nd) = new_lambda(p, (yyvsp[-2].nd), (yyvsp[0].nd));
@@ -9147,149 +9154,149 @@ yyreduce:
                       p->cmdarg_stack = (yyvsp[-1].stack);
                       CMDARG_LEXPOP();
                     }
-#line 9151 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9158 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 316: /* primary: "'if'" expr_value then compstmt if_tail "'end'"  */
-#line 3207 "mrbgems/mruby-compiler/core/parse.y"
+#line 3214 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-4].nd)), (yyvsp[-2].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-5].num));
                     }
-#line 9160 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9167 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 317: /* primary: "'unless'" expr_value then compstmt opt_else "'end'"  */
-#line 3215 "mrbgems/mruby-compiler/core/parse.y"
+#line 3222 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-4].nd)), (yyvsp[-1].nd), (yyvsp[-2].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-5].num));
                     }
-#line 9169 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9176 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 318: /* $@14: %empty  */
-#line 3219 "mrbgems/mruby-compiler/core/parse.y"
+#line 3226 "mrbgems/mruby-compiler/core/parse.y"
                                 {COND_PUSH(1);}
-#line 9175 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9182 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 319: /* $@15: %empty  */
-#line 3219 "mrbgems/mruby-compiler/core/parse.y"
+#line 3226 "mrbgems/mruby-compiler/core/parse.y"
                                                               {COND_POP();}
-#line 9181 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9188 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 320: /* primary: "'while'" $@14 expr_value do $@15 compstmt "'end'"  */
-#line 3222 "mrbgems/mruby-compiler/core/parse.y"
+#line 3229 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_while(p, cond((yyvsp[-4].nd)), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-6].num));
                     }
-#line 9190 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9197 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 321: /* $@16: %empty  */
-#line 3226 "mrbgems/mruby-compiler/core/parse.y"
+#line 3233 "mrbgems/mruby-compiler/core/parse.y"
                                 {COND_PUSH(1);}
-#line 9196 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9203 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 322: /* $@17: %empty  */
-#line 3226 "mrbgems/mruby-compiler/core/parse.y"
+#line 3233 "mrbgems/mruby-compiler/core/parse.y"
                                                               {COND_POP();}
-#line 9202 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9209 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 323: /* primary: "'until'" $@16 expr_value do $@17 compstmt "'end'"  */
-#line 3229 "mrbgems/mruby-compiler/core/parse.y"
+#line 3236 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_until(p, cond((yyvsp[-4].nd)), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-6].num));
                     }
-#line 9211 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9218 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 324: /* primary: "'case'" expr_value opt_terms case_body "'end'"  */
-#line 3236 "mrbgems/mruby-compiler/core/parse.y"
+#line 3243 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_case(p, (yyvsp[-3].nd), (yyvsp[-1].nd));
                     }
-#line 9219 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9226 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 325: /* primary: "'case'" opt_terms case_body "'end'"  */
-#line 3240 "mrbgems/mruby-compiler/core/parse.y"
+#line 3247 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_case(p, 0, (yyvsp[-1].nd));
                     }
-#line 9227 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9234 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 326: /* $@18: %empty  */
-#line 3244 "mrbgems/mruby-compiler/core/parse.y"
+#line 3251 "mrbgems/mruby-compiler/core/parse.y"
                   {COND_PUSH(1);}
-#line 9233 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9240 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 327: /* $@19: %empty  */
-#line 3246 "mrbgems/mruby-compiler/core/parse.y"
+#line 3253 "mrbgems/mruby-compiler/core/parse.y"
                   {COND_POP();}
-#line 9239 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9246 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 328: /* primary: "'for'" for_var "'in'" $@18 expr_value do $@19 compstmt "'end'"  */
-#line 3249 "mrbgems/mruby-compiler/core/parse.y"
+#line 3256 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_for(p, (yyvsp[-7].nd), (yyvsp[-4].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-8].num));
                     }
-#line 9248 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9255 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 329: /* @20: %empty  */
-#line 3255 "mrbgems/mruby-compiler/core/parse.y"
+#line 3262 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-2]), p, "class definition in method body");
                       (yyval.nd) = local_switch(p);
                       nvars_block(p);
                     }
-#line 9259 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9266 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 330: /* primary: "'class'" cpath superclass @20 bodystmt "'end'"  */
-#line 3263 "mrbgems/mruby-compiler/core/parse.y"
+#line 3270 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_class(p, (yyvsp[-4].nd), (yyvsp[-3].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-5].num));
                       local_resume(p, (yyvsp[-2].nd));
                       nvars_unnest(p);
                     }
-#line 9270 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9277 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 331: /* @21: %empty  */
-#line 3271 "mrbgems/mruby-compiler/core/parse.y"
+#line 3278 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = p->in_def;
                       p->in_def = 0;
                     }
-#line 9279 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9286 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 332: /* @22: %empty  */
-#line 3276 "mrbgems/mruby-compiler/core/parse.y"
+#line 3283 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(local_switch(p), int_to_node(p->in_single));
                       nvars_block(p);
                       p->in_single = 0;
                     }
-#line 9289 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9296 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 333: /* primary: "'class'" "<<" expr @21 term @22 bodystmt "'end'"  */
-#line 3283 "mrbgems/mruby-compiler/core/parse.y"
+#line 3290 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_sclass(p, (yyvsp[-5].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-7].num));
@@ -9298,44 +9305,44 @@ yyreduce:
                       p->in_def = (yyvsp[-4].num);
                       p->in_single = node_to_int((yyvsp[-2].nd)->cdr);
                     }
-#line 9302 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9309 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 334: /* @23: %empty  */
-#line 3293 "mrbgems/mruby-compiler/core/parse.y"
+#line 3300 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-1]), p, "module definition in method body");
                       (yyval.nd) = local_switch(p);
                       nvars_block(p);
                     }
-#line 9313 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9320 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 335: /* primary: "'module'" cpath @23 bodystmt "'end'"  */
-#line 3301 "mrbgems/mruby-compiler/core/parse.y"
+#line 3308 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_module(p, (yyvsp[-3].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-4].num));
                       local_resume(p, (yyvsp[-2].nd));
                       nvars_unnest(p);
                     }
-#line 9324 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9331 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 336: /* primary: defn_head f_arglist bodystmt "'end'"  */
-#line 3311 "mrbgems/mruby-compiler/core/parse.y"
+#line 3318 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       defn_setup(p, (yyval.nd), (yyvsp[-2].nd), (yyvsp[-1].nd));
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 9335 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9342 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 337: /* primary: defs_head f_arglist bodystmt "'end'"  */
-#line 3321 "mrbgems/mruby-compiler/core/parse.y"
+#line 3328 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       defn_setup(p, (yyval.nd), (yyvsp[-2].nd), (yyvsp[-1].nd));
@@ -9343,610 +9350,610 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 9347 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9354 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 338: /* primary: "'break'"  */
-#line 3329 "mrbgems/mruby-compiler/core/parse.y"
+#line 3336 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_break(p, 0);
                     }
-#line 9355 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9362 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 339: /* primary: "'next'"  */
-#line 3333 "mrbgems/mruby-compiler/core/parse.y"
+#line 3340 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_next(p, 0);
                     }
-#line 9363 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9370 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 340: /* primary: "'redo'"  */
-#line 3337 "mrbgems/mruby-compiler/core/parse.y"
+#line 3344 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_redo(p);
                     }
-#line 9371 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9378 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 341: /* primary: "'retry'"  */
-#line 3341 "mrbgems/mruby-compiler/core/parse.y"
+#line 3348 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_retry(p);
                     }
-#line 9379 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9386 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 342: /* primary_value: primary  */
-#line 3347 "mrbgems/mruby-compiler/core/parse.y"
+#line 3354 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                       if (!(yyval.nd)) (yyval.nd) = new_nil(p);
                     }
-#line 9388 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9395 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 349: /* if_tail: "'elsif'" expr_value then compstmt if_tail  */
-#line 3366 "mrbgems/mruby-compiler/core/parse.y"
+#line 3373 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-3].nd)), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9396 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9403 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 351: /* opt_else: "'else'" compstmt  */
-#line 3373 "mrbgems/mruby-compiler/core/parse.y"
+#line 3380 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9404 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9411 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 352: /* for_var: lhs  */
-#line 3379 "mrbgems/mruby-compiler/core/parse.y"
+#line 3386 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(list1((yyvsp[0].nd)));
                     }
-#line 9412 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9419 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 354: /* f_margs: f_arg  */
-#line 3386 "mrbgems/mruby-compiler/core/parse.y"
+#line 3393 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[0].nd),0,0);
                     }
-#line 9420 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9427 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 355: /* f_margs: f_arg ',' "*" f_norm_arg  */
-#line 3390 "mrbgems/mruby-compiler/core/parse.y"
+#line 3397 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-3].nd), new_lvar(p, (yyvsp[0].id)), 0);
                     }
-#line 9428 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9435 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 356: /* f_margs: f_arg ',' "*" f_norm_arg ',' f_arg  */
-#line 3394 "mrbgems/mruby-compiler/core/parse.y"
+#line 3401 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-5].nd), new_lvar(p, (yyvsp[-2].id)), (yyvsp[0].nd));
                     }
-#line 9436 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9443 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 357: /* f_margs: f_arg ',' "*"  */
-#line 3398 "mrbgems/mruby-compiler/core/parse.y"
+#line 3405 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, intern_op(mul));
                       (yyval.nd) = list3((yyvsp[-2].nd), int_to_node(-1), 0);
                     }
-#line 9445 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9452 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 358: /* f_margs: f_arg ',' "*" ',' f_arg  */
-#line 3403 "mrbgems/mruby-compiler/core/parse.y"
+#line 3410 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-4].nd), int_to_node(-1), (yyvsp[0].nd));
                     }
-#line 9453 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9460 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 359: /* f_margs: "*" f_norm_arg  */
-#line 3407 "mrbgems/mruby-compiler/core/parse.y"
+#line 3414 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, new_lvar(p, (yyvsp[0].id)), 0);
                     }
-#line 9461 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9468 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 360: /* f_margs: "*" f_norm_arg ',' f_arg  */
-#line 3411 "mrbgems/mruby-compiler/core/parse.y"
+#line 3418 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, new_lvar(p, (yyvsp[-2].id)), (yyvsp[0].nd));
                     }
-#line 9469 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9476 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 361: /* f_margs: "*"  */
-#line 3415 "mrbgems/mruby-compiler/core/parse.y"
+#line 3422 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, intern_op(mul));
                       (yyval.nd) = list3(0, int_to_node(-1), 0);
                     }
-#line 9478 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9485 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 362: /* $@24: %empty  */
-#line 3420 "mrbgems/mruby-compiler/core/parse.y"
+#line 3427 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, intern_op(mul));
                     }
-#line 9486 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9493 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 363: /* f_margs: "*" ',' $@24 f_arg  */
-#line 3424 "mrbgems/mruby-compiler/core/parse.y"
+#line 3431 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, int_to_node(-1), (yyvsp[0].nd));
                     }
-#line 9494 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9501 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 364: /* block_args_tail: f_block_kwarg ',' f_kwrest opt_f_block_arg  */
-#line 3430 "mrbgems/mruby-compiler/core/parse.y"
+#line 3437 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].id));
                     }
-#line 9502 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9509 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 365: /* block_args_tail: f_block_kwarg opt_f_block_arg  */
-#line 3434 "mrbgems/mruby-compiler/core/parse.y"
+#line 3441 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-1].nd), 0, (yyvsp[0].id));
                     }
-#line 9510 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9517 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 366: /* block_args_tail: f_kwrest opt_f_block_arg  */
-#line 3438 "mrbgems/mruby-compiler/core/parse.y"
+#line 3445 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, (yyvsp[-1].id), (yyvsp[0].id));
                     }
-#line 9518 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9525 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 367: /* block_args_tail: f_block_arg  */
-#line 3442 "mrbgems/mruby-compiler/core/parse.y"
+#line 3449 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, (yyvsp[0].id));
                     }
-#line 9526 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9533 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 368: /* opt_block_args_tail: ',' block_args_tail  */
-#line 3448 "mrbgems/mruby-compiler/core/parse.y"
+#line 3455 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9534 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9541 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 369: /* opt_block_args_tail: %empty  */
-#line 3452 "mrbgems/mruby-compiler/core/parse.y"
+#line 3459 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, 0);
                     }
-#line 9542 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9549 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 370: /* block_param: f_arg ',' f_block_optarg ',' f_rest_arg opt_block_args_tail  */
-#line 3458 "mrbgems/mruby-compiler/core/parse.y"
+#line 3465 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), (yyvsp[-3].nd), (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9550 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9557 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 371: /* block_param: f_arg ',' f_block_optarg ',' f_rest_arg ',' f_arg opt_block_args_tail  */
-#line 3462 "mrbgems/mruby-compiler/core/parse.y"
+#line 3469 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-7].nd), (yyvsp[-5].nd), (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9558 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9565 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 372: /* block_param: f_arg ',' f_block_optarg opt_block_args_tail  */
-#line 3466 "mrbgems/mruby-compiler/core/parse.y"
+#line 3473 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 9566 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9573 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 373: /* block_param: f_arg ',' f_block_optarg ',' f_arg opt_block_args_tail  */
-#line 3470 "mrbgems/mruby-compiler/core/parse.y"
+#line 3477 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), (yyvsp[-3].nd), 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9574 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9581 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 374: /* block_param: f_arg ',' f_rest_arg opt_block_args_tail  */
-#line 3474 "mrbgems/mruby-compiler/core/parse.y"
+#line 3481 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9582 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9589 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 375: /* block_param: f_arg ',' opt_block_args_tail  */
-#line 3478 "mrbgems/mruby-compiler/core/parse.y"
+#line 3485 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-2].nd), 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 9590 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9597 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 376: /* block_param: f_arg ',' f_rest_arg ',' f_arg opt_block_args_tail  */
-#line 3482 "mrbgems/mruby-compiler/core/parse.y"
+#line 3489 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), 0, (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9598 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9605 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 377: /* block_param: f_arg opt_block_args_tail  */
-#line 3486 "mrbgems/mruby-compiler/core/parse.y"
+#line 3493 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-1].nd), 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 9606 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9613 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 378: /* block_param: f_block_optarg ',' f_rest_arg opt_block_args_tail  */
-#line 3490 "mrbgems/mruby-compiler/core/parse.y"
+#line 3497 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9614 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9621 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 379: /* block_param: f_block_optarg ',' f_rest_arg ',' f_arg opt_block_args_tail  */
-#line 3494 "mrbgems/mruby-compiler/core/parse.y"
+#line 3501 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-5].nd), (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9622 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9629 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 380: /* block_param: f_block_optarg opt_block_args_tail  */
-#line 3498 "mrbgems/mruby-compiler/core/parse.y"
+#line 3505 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 9630 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9637 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 381: /* block_param: f_block_optarg ',' f_arg opt_block_args_tail  */
-#line 3502 "mrbgems/mruby-compiler/core/parse.y"
+#line 3509 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9638 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9645 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 382: /* block_param: f_rest_arg opt_block_args_tail  */
-#line 3506 "mrbgems/mruby-compiler/core/parse.y"
+#line 3513 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9646 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9653 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 383: /* block_param: f_rest_arg ',' f_arg opt_block_args_tail  */
-#line 3510 "mrbgems/mruby-compiler/core/parse.y"
+#line 3517 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9654 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9661 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 384: /* block_param: block_args_tail  */
-#line 3514 "mrbgems/mruby-compiler/core/parse.y"
+#line 3521 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 9662 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9669 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 385: /* opt_block_param: none  */
-#line 3520 "mrbgems/mruby-compiler/core/parse.y"
+#line 3527 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_blk(p);
                       (yyval.nd) = 0;
                     }
-#line 9671 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9678 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 386: /* opt_block_param: block_param_def  */
-#line 3525 "mrbgems/mruby-compiler/core/parse.y"
+#line 3532 "mrbgems/mruby-compiler/core/parse.y"
                    {
                       p->cmd_start = TRUE;
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9680 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9687 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 387: /* $@25: %empty  */
-#line 3531 "mrbgems/mruby-compiler/core/parse.y"
+#line 3538 "mrbgems/mruby-compiler/core/parse.y"
                       {local_add_blk(p);}
-#line 9686 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9693 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 388: /* block_param_def: '|' $@25 opt_bv_decl '|'  */
-#line 3532 "mrbgems/mruby-compiler/core/parse.y"
+#line 3539 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 9694 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9701 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 389: /* block_param_def: "||"  */
-#line 3536 "mrbgems/mruby-compiler/core/parse.y"
+#line 3543 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_blk(p);
                       (yyval.nd) = 0;
                     }
-#line 9703 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9710 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 390: /* block_param_def: '|' block_param opt_bv_decl '|'  */
-#line 3541 "mrbgems/mruby-compiler/core/parse.y"
+#line 3548 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-2].nd);
                     }
-#line 9711 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9718 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 391: /* opt_bv_decl: opt_nl  */
-#line 3547 "mrbgems/mruby-compiler/core/parse.y"
+#line 3554 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 9719 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9726 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 392: /* opt_bv_decl: opt_nl ';' bv_decls opt_nl  */
-#line 3551 "mrbgems/mruby-compiler/core/parse.y"
+#line 3558 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 9727 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9734 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 395: /* bvar: "local variable or method"  */
-#line 3561 "mrbgems/mruby-compiler/core/parse.y"
+#line 3568 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[0].id));
                       new_bv(p, (yyvsp[0].id));
                     }
-#line 9736 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9743 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 397: /* f_larglist: '(' f_args opt_bv_decl ')'  */
-#line 3569 "mrbgems/mruby-compiler/core/parse.y"
+#line 3576 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-2].nd);
                     }
-#line 9744 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9751 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 398: /* f_larglist: f_args  */
-#line 3573 "mrbgems/mruby-compiler/core/parse.y"
+#line 3580 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9752 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9759 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 399: /* lambda_body: tLAMBEG compstmt '}'  */
-#line 3579 "mrbgems/mruby-compiler/core/parse.y"
+#line 3586 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9760 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9767 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 400: /* lambda_body: "'do' for lambda" bodystmt "'end'"  */
-#line 3583 "mrbgems/mruby-compiler/core/parse.y"
+#line 3590 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9768 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9775 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 401: /* @26: %empty  */
-#line 3589 "mrbgems/mruby-compiler/core/parse.y"
+#line 3596 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                       (yyval.num) = p->lineno;
                     }
-#line 9778 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9785 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 402: /* do_block: "'do' for block" @26 opt_block_param bodystmt "'end'"  */
-#line 3597 "mrbgems/mruby-compiler/core/parse.y"
+#line 3604 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block(p,(yyvsp[-2].nd),(yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-3].num));
                       local_unnest(p);
                       nvars_unnest(p);
                     }
-#line 9789 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9796 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 403: /* block_call: command do_block  */
-#line 3606 "mrbgems/mruby-compiler/core/parse.y"
+#line 3613 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       call_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9798 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9805 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 404: /* block_call: block_call call_op2 operation2 opt_paren_args  */
-#line 3611 "mrbgems/mruby-compiler/core/parse.y"
+#line 3618 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 9806 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9813 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 405: /* block_call: block_call call_op2 operation2 opt_paren_args brace_block  */
-#line 3615 "mrbgems/mruby-compiler/core/parse.y"
+#line 3622 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), (yyvsp[-1].nd), (yyvsp[-3].num));
                       call_with_block(p, (yyval.nd), (yyvsp[0].nd));
                     }
-#line 9815 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9822 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 406: /* block_call: block_call call_op2 operation2 command_args do_block  */
-#line 3620 "mrbgems/mruby-compiler/core/parse.y"
+#line 3627 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), (yyvsp[-1].nd), (yyvsp[-3].num));
                       call_with_block(p, (yyval.nd), (yyvsp[0].nd));
                     }
-#line 9824 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9831 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 407: /* method_call: operation paren_args  */
-#line 3627 "mrbgems/mruby-compiler/core/parse.y"
+#line 3634 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 9832 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9839 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 408: /* method_call: primary_value call_op operation2 opt_paren_args  */
-#line 3631 "mrbgems/mruby-compiler/core/parse.y"
+#line 3638 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 9840 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9847 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 409: /* method_call: primary_value "::" operation2 paren_args  */
-#line 3635 "mrbgems/mruby-compiler/core/parse.y"
+#line 3642 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), tCOLON2);
                     }
-#line 9848 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9855 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 410: /* method_call: primary_value "::" operation3  */
-#line 3639 "mrbgems/mruby-compiler/core/parse.y"
+#line 3646 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, tCOLON2);
                     }
-#line 9856 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9863 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 411: /* method_call: primary_value call_op paren_args  */
-#line 3643 "mrbgems/mruby-compiler/core/parse.y"
+#line 3650 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), MRB_SYM_2(p->mrb, call), (yyvsp[0].nd), (yyvsp[-1].num));
                     }
-#line 9864 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9871 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 412: /* method_call: primary_value "::" paren_args  */
-#line 3647 "mrbgems/mruby-compiler/core/parse.y"
+#line 3654 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), MRB_SYM_2(p->mrb, call), (yyvsp[0].nd), tCOLON2);
                     }
-#line 9872 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9879 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 413: /* method_call: "'super'" paren_args  */
-#line 3651 "mrbgems/mruby-compiler/core/parse.y"
+#line 3658 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_super(p, (yyvsp[0].nd));
                     }
-#line 9880 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9887 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 414: /* method_call: "'super'"  */
-#line 3655 "mrbgems/mruby-compiler/core/parse.y"
+#line 3662 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_zsuper(p);
                     }
-#line 9888 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9895 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 415: /* method_call: primary_value '[' opt_call_args ']'  */
-#line 3659 "mrbgems/mruby-compiler/core/parse.y"
+#line 3666 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), intern_op(aref), (yyvsp[-1].nd), '.');
                     }
-#line 9896 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9903 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 416: /* @27: %empty  */
-#line 3665 "mrbgems/mruby-compiler/core/parse.y"
+#line 3672 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                       (yyval.num) = p->lineno;
                     }
-#line 9906 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9913 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 417: /* brace_block: '{' @27 opt_block_param compstmt '}'  */
-#line 3672 "mrbgems/mruby-compiler/core/parse.y"
+#line 3679 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block(p,(yyvsp[-2].nd),(yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-3].num));
                       local_unnest(p);
                       nvars_unnest(p);
                     }
-#line 9917 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9924 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 418: /* @28: %empty  */
-#line 3679 "mrbgems/mruby-compiler/core/parse.y"
+#line 3686 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                       (yyval.num) = p->lineno;
                     }
-#line 9927 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9934 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 419: /* brace_block: "'do'" @28 opt_block_param bodystmt "'end'"  */
-#line 3686 "mrbgems/mruby-compiler/core/parse.y"
+#line 3693 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block(p,(yyvsp[-2].nd),(yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-3].num));
                       local_unnest(p);
                       nvars_unnest(p);
                     }
-#line 9938 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9945 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 420: /* case_body: "'when'" args then compstmt cases  */
-#line 3697 "mrbgems/mruby-compiler/core/parse.y"
+#line 3704 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(cons((yyvsp[-3].nd), (yyvsp[-1].nd)), (yyvsp[0].nd));
                     }
-#line 9946 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9953 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 421: /* cases: opt_else  */
-#line 3703 "mrbgems/mruby-compiler/core/parse.y"
+#line 3710 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[0].nd)) {
                         (yyval.nd) = cons(cons(0, (yyvsp[0].nd)), 0);
@@ -9955,155 +9962,155 @@ yyreduce:
                         (yyval.nd) = 0;
                       }
                     }
-#line 9959 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9966 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 423: /* opt_rescue: "'rescue'" exc_list exc_var then compstmt opt_rescue  */
-#line 3717 "mrbgems/mruby-compiler/core/parse.y"
+#line 3724 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(list3((yyvsp[-4].nd), (yyvsp[-3].nd), (yyvsp[-1].nd)));
                       if ((yyvsp[0].nd)) (yyval.nd) = append((yyval.nd), (yyvsp[0].nd));
                     }
-#line 9968 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9975 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 425: /* exc_list: arg  */
-#line 3725 "mrbgems/mruby-compiler/core/parse.y"
+#line 3732 "mrbgems/mruby-compiler/core/parse.y"
                     {
                         (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 9976 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9983 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 428: /* exc_var: "=>" lhs  */
-#line 3733 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = (yyvsp[0].nd);
-                    }
-#line 9984 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 430: /* opt_ensure: "'ensure'" compstmt  */
 #line 3740 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9992 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9991 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 430: /* opt_ensure: "'ensure'" compstmt  */
+#line 3747 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = (yyvsp[0].nd);
+                    }
+#line 9999 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 437: /* string: string string_fragment  */
-#line 3754 "mrbgems/mruby-compiler/core/parse.y"
+#line 3761 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = append((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10000 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10007 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 438: /* string_fragment: "character literal"  */
-#line 3760 "mrbgems/mruby-compiler/core/parse.y"
+#line 3767 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* tCHAR is (len . str), wrap as cons list */
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10009 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10016 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 439: /* string_fragment: tSTRING  */
-#line 3765 "mrbgems/mruby-compiler/core/parse.y"
+#line 3772 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* tSTRING is (len . str), wrap as cons list */
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10018 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10025 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 440: /* string_fragment: "string literal" tSTRING  */
-#line 3770 "mrbgems/mruby-compiler/core/parse.y"
+#line 3777 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* $2 is (len . str), wrap as cons list */
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10027 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10034 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 441: /* string_fragment: "string literal" string_rep tSTRING  */
-#line 3775 "mrbgems/mruby-compiler/core/parse.y"
+#line 3782 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10035 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10042 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 443: /* string_rep: string_rep string_interp  */
-#line 3782 "mrbgems/mruby-compiler/core/parse.y"
+#line 3789 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = append((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10043 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10050 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 444: /* string_interp: tSTRING_MID  */
-#line 3788 "mrbgems/mruby-compiler/core/parse.y"
+#line 3795 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* $1 is already in (len . str) format */
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10052 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10059 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 445: /* @29: %empty  */
-#line 3793 "mrbgems/mruby-compiler/core/parse.y"
+#line 3800 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push_strterm(p);
                     }
-#line 10060 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10067 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 446: /* string_interp: tSTRING_PART @29 compstmt '}'  */
-#line 3798 "mrbgems/mruby-compiler/core/parse.y"
+#line 3805 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       pop_strterm(p,(yyvsp[-2].nd));
                       /* $1 is already in (len . str) format, create (-1 . node) for expression */
                       node *expr_elem = cons(int_to_node(-1), (yyvsp[-1].nd));
                       (yyval.nd) = list2((yyvsp[-3].nd), expr_elem);
                     }
-#line 10071 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10078 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 447: /* string_interp: tLITERAL_DELIM  */
-#line 3805 "mrbgems/mruby-compiler/core/parse.y"
+#line 3812 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_literal_delim(p));
                     }
-#line 10079 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10086 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 448: /* string_interp: tHD_LITERAL_DELIM heredoc_bodies  */
-#line 3809 "mrbgems/mruby-compiler/core/parse.y"
+#line 3816 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_literal_delim(p));
                     }
-#line 10087 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10094 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 449: /* xstring: tXSTRING_BEG tXSTRING  */
-#line 3815 "mrbgems/mruby-compiler/core/parse.y"
+#line 3822 "mrbgems/mruby-compiler/core/parse.y"
                     {
                         (yyval.nd) = cons((yyvsp[0].nd), (node*)NULL);
                     }
-#line 10095 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10102 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 450: /* xstring: tXSTRING_BEG string_rep tXSTRING  */
-#line 3819 "mrbgems/mruby-compiler/core/parse.y"
+#line 3826 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10103 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10110 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 451: /* regexp: tREGEXP_BEG tREGEXP  */
-#line 3825 "mrbgems/mruby-compiler/core/parse.y"
+#line 3832 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *data = (yyvsp[0].nd);  /* ((len . pattern) . (flags . encoding)) */
                       const char *flags = (const char*)data->cdr->car;
@@ -10112,11 +10119,11 @@ yyreduce:
                       node *pattern_list = cons(data->car, (node*)NULL);
                       (yyval.nd) = new_regx(p, pattern_list, flags, encoding);
                     }
-#line 10116 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10123 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 452: /* regexp: tREGEXP_BEG string_rep tREGEXP  */
-#line 3834 "mrbgems/mruby-compiler/core/parse.y"
+#line 3841 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *data = (yyvsp[0].nd);  /* ((len . pattern) . (flags . encoding)) */
                       const char *flags = (const char*)data->cdr->car;
@@ -10125,47 +10132,47 @@ yyreduce:
                       node *complete_list = push((yyvsp[-1].nd), data->car);
                       (yyval.nd) = new_regx(p, complete_list, flags, encoding);
                     }
-#line 10129 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10136 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 456: /* heredoc_body: tHEREDOC_END  */
-#line 3852 "mrbgems/mruby-compiler/core/parse.y"
+#line 3859 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       parser_heredoc_info *info = parsing_heredoc_info(p);
                       info->doc = push(info->doc, new_str_empty(p));
                       heredoc_end(p);
                     }
-#line 10139 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10146 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 457: /* heredoc_body: heredoc_string_rep tHEREDOC_END  */
-#line 3858 "mrbgems/mruby-compiler/core/parse.y"
+#line 3865 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       heredoc_end(p);
                     }
-#line 10147 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10154 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 460: /* heredoc_string_interp: tHD_STRING_MID  */
-#line 3868 "mrbgems/mruby-compiler/core/parse.y"
+#line 3875 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       parser_heredoc_info *info = parsing_heredoc_info(p);
                       info->doc = push(info->doc, (yyvsp[0].nd));
                       heredoc_treat_nextline(p);
                     }
-#line 10157 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10164 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 461: /* @30: %empty  */
-#line 3874 "mrbgems/mruby-compiler/core/parse.y"
+#line 3881 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push_strterm(p);
                     }
-#line 10165 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10172 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 462: /* heredoc_string_interp: tHD_STRING_PART @30 compstmt '}'  */
-#line 3879 "mrbgems/mruby-compiler/core/parse.y"
+#line 3886 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       pop_strterm(p, (yyvsp[-2].nd));
                       parser_heredoc_info *info = parsing_heredoc_info(p);
@@ -10173,37 +10180,37 @@ yyreduce:
                       node *expr_elem = cons(int_to_node(-1), (yyvsp[-1].nd));
                       info->doc = push(push(info->doc, (yyvsp[-3].nd)), expr_elem);
                     }
-#line 10177 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10184 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 463: /* words: tWORDS_BEG tSTRING  */
-#line 3889 "mrbgems/mruby-compiler/core/parse.y"
+#line 3896 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_words(p, list1((yyvsp[0].nd)));
                     }
-#line 10185 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10192 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 464: /* words: tWORDS_BEG string_rep tSTRING  */
-#line 3893 "mrbgems/mruby-compiler/core/parse.y"
+#line 3900 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *n = (yyvsp[-1].nd);
                       n = push(n, (yyvsp[0].nd));
                       (yyval.nd) = new_words(p, n);
                     }
-#line 10195 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10202 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 465: /* symbol: basic_symbol  */
-#line 3901 "mrbgems/mruby-compiler/core/parse.y"
+#line 3908 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_sym(p, (yyvsp[0].id));
                     }
-#line 10203 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10210 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 466: /* symbol: "symbol" "string literal" string_rep tSTRING  */
-#line 3905 "mrbgems/mruby-compiler/core/parse.y"
+#line 3912 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *n = (yyvsp[-1].nd);
                       p->lstate = EXPR_ENDARG;
@@ -10215,183 +10222,183 @@ yyreduce:
                       }
                       (yyval.nd) = new_dsym(p, n);
                     }
-#line 10219 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10226 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 467: /* symbol: "symbol" "numbered parameter"  */
-#line 3917 "mrbgems/mruby-compiler/core/parse.y"
+#line 3924 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       mrb_sym sym = intern_numparam((yyvsp[0].num));
                       (yyval.nd) = new_sym(p, sym);
                     }
-#line 10228 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10235 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 468: /* basic_symbol: "symbol" sym  */
-#line 3924 "mrbgems/mruby-compiler/core/parse.y"
+#line 3931 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_END;
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 10237 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10244 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 473: /* sym: tSTRING  */
-#line 3935 "mrbgems/mruby-compiler/core/parse.y"
+#line 3942 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = new_strsym(p, (yyvsp[0].nd));
                     }
-#line 10245 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10252 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 474: /* sym: "string literal" tSTRING  */
-#line 3939 "mrbgems/mruby-compiler/core/parse.y"
+#line 3946 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = new_strsym(p, (yyvsp[0].nd));
                     }
-#line 10253 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10260 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 475: /* symbols: tSYMBOLS_BEG tSTRING  */
-#line 3945 "mrbgems/mruby-compiler/core/parse.y"
+#line 3952 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_symbols(p, list1((yyvsp[0].nd)));
                     }
-#line 10261 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10268 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 476: /* symbols: tSYMBOLS_BEG string_rep tSTRING  */
-#line 3949 "mrbgems/mruby-compiler/core/parse.y"
+#line 3956 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *n = (yyvsp[-1].nd);
                       n = push(n, (yyvsp[0].nd));
                       (yyval.nd) = new_symbols(p, n);
                     }
-#line 10271 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10278 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 479: /* numeric: tUMINUS_NUM "integer literal"  */
-#line 3959 "mrbgems/mruby-compiler/core/parse.y"
+#line 3966 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_negate(p, (yyvsp[0].nd));
                     }
-#line 10279 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10286 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 480: /* numeric: tUMINUS_NUM "float literal"  */
-#line 3963 "mrbgems/mruby-compiler/core/parse.y"
+#line 3970 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_negate(p, (yyvsp[0].nd));
                     }
-#line 10287 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10294 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 481: /* variable: "local variable or method"  */
-#line 3969 "mrbgems/mruby-compiler/core/parse.y"
+#line 3976 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_lvar(p, (yyvsp[0].id));
                     }
-#line 10295 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10302 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 482: /* variable: "instance variable"  */
-#line 3973 "mrbgems/mruby-compiler/core/parse.y"
+#line 3980 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_ivar(p, (yyvsp[0].id));
                     }
-#line 10303 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10310 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 483: /* variable: "global variable"  */
-#line 3977 "mrbgems/mruby-compiler/core/parse.y"
+#line 3984 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_gvar(p, (yyvsp[0].id));
                     }
-#line 10311 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10318 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 484: /* variable: "class variable"  */
-#line 3981 "mrbgems/mruby-compiler/core/parse.y"
+#line 3988 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_cvar(p, (yyvsp[0].id));
                     }
-#line 10319 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10326 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 485: /* variable: "constant"  */
-#line 3985 "mrbgems/mruby-compiler/core/parse.y"
+#line 3992 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_const(p, (yyvsp[0].id));
                     }
-#line 10327 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10334 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 486: /* var_lhs: variable  */
-#line 3991 "mrbgems/mruby-compiler/core/parse.y"
+#line 3998 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       assignable(p, (yyvsp[0].nd));
                     }
-#line 10335 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10342 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 487: /* var_lhs: "numbered parameter"  */
-#line 3995 "mrbgems/mruby-compiler/core/parse.y"
+#line 4002 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "can't assign to numbered parameter");
                     }
-#line 10343 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10350 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 488: /* var_ref: variable  */
-#line 4001 "mrbgems/mruby-compiler/core/parse.y"
+#line 4008 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = var_reference(p, (yyvsp[0].nd));
                     }
-#line 10351 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10358 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 489: /* var_ref: "numbered parameter"  */
-#line 4005 "mrbgems/mruby-compiler/core/parse.y"
+#line 4012 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_nvar(p, (yyvsp[0].num));
                     }
-#line 10359 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10366 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 490: /* var_ref: "'nil'"  */
-#line 4009 "mrbgems/mruby-compiler/core/parse.y"
+#line 4016 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_nil(p);
                     }
-#line 10367 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10374 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 491: /* var_ref: "'self'"  */
-#line 4013 "mrbgems/mruby-compiler/core/parse.y"
+#line 4020 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_self(p);
                     }
-#line 10375 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10382 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 492: /* var_ref: "'true'"  */
-#line 4017 "mrbgems/mruby-compiler/core/parse.y"
+#line 4024 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_true(p);
                     }
-#line 10383 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10390 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 493: /* var_ref: "'false'"  */
-#line 4021 "mrbgems/mruby-compiler/core/parse.y"
+#line 4028 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_false(p);
                     }
-#line 10391 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10398 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 494: /* var_ref: "'__FILE__'"  */
-#line 4025 "mrbgems/mruby-compiler/core/parse.y"
+#line 4032 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       const char *fn = mrb_sym_name_len(p->mrb, p->filename_sym, NULL);
                       if (!fn) {
@@ -10399,686 +10406,686 @@ yyreduce:
                       }
                       (yyval.nd) = new_str(p, cons(cons(int_to_node(strlen(fn)), (node*)fn), (node*)NULL));
                     }
-#line 10403 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10410 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 495: /* var_ref: "'__LINE__'"  */
-#line 4033 "mrbgems/mruby-compiler/core/parse.y"
+#line 4040 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       char buf[16];
 
                       dump_int(p->lineno, buf);
                       (yyval.nd) = new_int(p, buf, 10, 0);
                     }
-#line 10414 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10421 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 496: /* var_ref: "'__ENCODING__'"  */
-#line 4040 "mrbgems/mruby-compiler/core/parse.y"
+#line 4047 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, MRB_SYM_2(p->mrb, __ENCODING__), 0);
                     }
-#line 10422 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10429 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 499: /* superclass: %empty  */
-#line 4050 "mrbgems/mruby-compiler/core/parse.y"
+#line 4057 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 10430 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10437 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 500: /* $@31: %empty  */
-#line 4054 "mrbgems/mruby-compiler/core/parse.y"
+#line 4061 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_BEG;
                       p->cmd_start = TRUE;
                     }
-#line 10439 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10446 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 501: /* superclass: '<' $@31 expr_value term  */
-#line 4059 "mrbgems/mruby-compiler/core/parse.y"
+#line 4066 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 10447 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10454 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 504: /* f_arglist_paren: '(' f_args rparen  */
-#line 4075 "mrbgems/mruby-compiler/core/parse.y"
+#line 4082 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                       p->lstate = EXPR_BEG;
                       p->cmd_start = TRUE;
                     }
-#line 10457 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10464 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 505: /* f_arglist_paren: '(' f_arg ',' tBDOT3 rparen  */
-#line 4081 "mrbgems/mruby-compiler/core/parse.y"
+#line 4088 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_dots(p, (yyvsp[-3].nd));
                     }
-#line 10465 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10472 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 506: /* f_arglist_paren: '(' tBDOT3 rparen  */
-#line 4085 "mrbgems/mruby-compiler/core/parse.y"
+#line 4092 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_dots(p, 0);
                     }
-#line 10473 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10480 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 508: /* f_arglist: f_args term  */
-#line 4092 "mrbgems/mruby-compiler/core/parse.y"
+#line 4099 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 10481 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10488 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 509: /* f_arglist: f_arg ',' tBDOT3 term  */
-#line 4096 "mrbgems/mruby-compiler/core/parse.y"
+#line 4103 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_dots(p, (yyvsp[-3].nd));
                     }
-#line 10489 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10496 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 510: /* f_arglist: "..." term  */
-#line 4100 "mrbgems/mruby-compiler/core/parse.y"
+#line 4107 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_dots(p, 0);
                     }
-#line 10497 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10504 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 511: /* f_label: "local variable or method" "label"  */
-#line 4106 "mrbgems/mruby-compiler/core/parse.y"
+#line 4113 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                     }
-#line 10505 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10512 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 512: /* f_label: "numbered parameter" "label"  */
-#line 4110 "mrbgems/mruby-compiler/core/parse.y"
+#line 4117 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                     }
-#line 10513 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10520 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 513: /* f_kw: f_label arg  */
-#line 4116 "mrbgems/mruby-compiler/core/parse.y"
+#line 4123 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = new_kw_arg(p, (yyvsp[-1].id), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 10523 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10530 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 514: /* f_kw: f_label  */
-#line 4122 "mrbgems/mruby-compiler/core/parse.y"
+#line 4129 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_kw_arg(p, (yyvsp[0].id), 0);
                       local_unnest(p);
                     }
-#line 10532 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10539 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 515: /* f_block_kw: f_label primary_value  */
-#line 4129 "mrbgems/mruby-compiler/core/parse.y"
+#line 4136 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = new_kw_arg(p, (yyvsp[-1].id), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 10542 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10549 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 516: /* f_block_kw: f_label  */
-#line 4135 "mrbgems/mruby-compiler/core/parse.y"
+#line 4142 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_kw_arg(p, (yyvsp[0].id), 0);
                       local_unnest(p);
                     }
-#line 10551 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10558 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 517: /* f_block_kwarg: f_block_kw  */
-#line 4142 "mrbgems/mruby-compiler/core/parse.y"
+#line 4149 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10559 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10566 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 518: /* f_block_kwarg: f_block_kwarg ',' f_block_kw  */
-#line 4146 "mrbgems/mruby-compiler/core/parse.y"
+#line 4153 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10567 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10574 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 519: /* f_kwarg: f_kw  */
-#line 4152 "mrbgems/mruby-compiler/core/parse.y"
+#line 4159 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10575 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10582 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 520: /* f_kwarg: f_kwarg ',' f_kw  */
-#line 4156 "mrbgems/mruby-compiler/core/parse.y"
+#line 4163 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10583 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10590 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 523: /* f_kwrest: kwrest_mark "local variable or method"  */
-#line 4166 "mrbgems/mruby-compiler/core/parse.y"
+#line 4173 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 10591 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10598 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 524: /* f_kwrest: kwrest_mark  */
-#line 4170 "mrbgems/mruby-compiler/core/parse.y"
+#line 4177 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = intern_op(pow);
                     }
-#line 10599 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10606 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 525: /* args_tail: f_kwarg ',' f_kwrest opt_f_block_arg  */
-#line 4176 "mrbgems/mruby-compiler/core/parse.y"
+#line 4183 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].id));
                     }
-#line 10607 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10614 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 526: /* args_tail: f_kwarg opt_f_block_arg  */
-#line 4180 "mrbgems/mruby-compiler/core/parse.y"
+#line 4187 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-1].nd), 0, (yyvsp[0].id));
                     }
-#line 10615 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10622 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 527: /* args_tail: f_kwrest opt_f_block_arg  */
-#line 4184 "mrbgems/mruby-compiler/core/parse.y"
+#line 4191 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, (yyvsp[-1].id), (yyvsp[0].id));
                     }
-#line 10623 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10630 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 528: /* args_tail: f_block_arg  */
-#line 4188 "mrbgems/mruby-compiler/core/parse.y"
+#line 4195 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, (yyvsp[0].id));
                     }
-#line 10631 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10638 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 529: /* opt_args_tail: ',' args_tail  */
-#line 4194 "mrbgems/mruby-compiler/core/parse.y"
+#line 4201 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 10639 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10646 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 530: /* opt_args_tail: %empty  */
-#line 4198 "mrbgems/mruby-compiler/core/parse.y"
+#line 4205 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, 0);
                     }
-#line 10647 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10654 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 531: /* f_args: f_arg ',' f_optarg ',' f_rest_arg opt_args_tail  */
-#line 4204 "mrbgems/mruby-compiler/core/parse.y"
+#line 4211 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), (yyvsp[-3].nd), (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 10655 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10662 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 532: /* f_args: f_arg ',' f_optarg ',' f_rest_arg ',' f_arg opt_args_tail  */
-#line 4208 "mrbgems/mruby-compiler/core/parse.y"
+#line 4215 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-7].nd), (yyvsp[-5].nd), (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10663 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10670 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 533: /* f_args: f_arg ',' f_optarg opt_args_tail  */
-#line 4212 "mrbgems/mruby-compiler/core/parse.y"
+#line 4219 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 10671 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10678 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 534: /* f_args: f_arg ',' f_optarg ',' f_arg opt_args_tail  */
-#line 4216 "mrbgems/mruby-compiler/core/parse.y"
+#line 4223 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), (yyvsp[-3].nd), 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10679 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10686 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 535: /* f_args: f_arg ',' f_rest_arg opt_args_tail  */
-#line 4220 "mrbgems/mruby-compiler/core/parse.y"
+#line 4227 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 10687 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10694 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 536: /* f_args: f_arg ',' f_rest_arg ',' f_arg opt_args_tail  */
-#line 4224 "mrbgems/mruby-compiler/core/parse.y"
+#line 4231 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), 0, (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10695 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10702 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 537: /* f_args: f_arg opt_args_tail  */
-#line 4228 "mrbgems/mruby-compiler/core/parse.y"
+#line 4235 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-1].nd), 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 10703 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10710 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 538: /* f_args: f_optarg ',' f_rest_arg opt_args_tail  */
-#line 4232 "mrbgems/mruby-compiler/core/parse.y"
+#line 4239 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 10711 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10718 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 539: /* f_args: f_optarg ',' f_rest_arg ',' f_arg opt_args_tail  */
-#line 4236 "mrbgems/mruby-compiler/core/parse.y"
+#line 4243 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-5].nd), (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10719 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10726 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 540: /* f_args: f_optarg opt_args_tail  */
-#line 4240 "mrbgems/mruby-compiler/core/parse.y"
+#line 4247 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 10727 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10734 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 541: /* f_args: f_optarg ',' f_arg opt_args_tail  */
-#line 4244 "mrbgems/mruby-compiler/core/parse.y"
+#line 4251 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10735 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10742 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 542: /* f_args: f_rest_arg opt_args_tail  */
-#line 4248 "mrbgems/mruby-compiler/core/parse.y"
+#line 4255 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 10743 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10750 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 543: /* f_args: f_rest_arg ',' f_arg opt_args_tail  */
-#line 4252 "mrbgems/mruby-compiler/core/parse.y"
+#line 4259 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10751 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10758 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 544: /* f_args: args_tail  */
-#line 4256 "mrbgems/mruby-compiler/core/parse.y"
+#line 4263 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 10759 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10766 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 545: /* f_args: %empty  */
-#line 4260 "mrbgems/mruby-compiler/core/parse.y"
+#line 4267 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, 0);
                       (yyval.nd) = new_args(p, 0, 0, 0, 0, 0);
                     }
-#line 10768 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10775 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 546: /* f_bad_arg: "constant"  */
-#line 4267 "mrbgems/mruby-compiler/core/parse.y"
+#line 4274 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "formal argument cannot be a constant");
                       (yyval.nd) = 0;
                     }
-#line 10777 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10784 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 547: /* f_bad_arg: "instance variable"  */
-#line 4272 "mrbgems/mruby-compiler/core/parse.y"
+#line 4279 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "formal argument cannot be an instance variable");
                       (yyval.nd) = 0;
                     }
-#line 10786 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10793 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 548: /* f_bad_arg: "global variable"  */
-#line 4277 "mrbgems/mruby-compiler/core/parse.y"
+#line 4284 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "formal argument cannot be a global variable");
                       (yyval.nd) = 0;
                     }
-#line 10795 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10802 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 549: /* f_bad_arg: "class variable"  */
-#line 4282 "mrbgems/mruby-compiler/core/parse.y"
+#line 4289 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "formal argument cannot be a class variable");
                       (yyval.nd) = 0;
                     }
-#line 10804 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10811 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 550: /* f_bad_arg: "numbered parameter"  */
-#line 4287 "mrbgems/mruby-compiler/core/parse.y"
+#line 4294 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "formal argument cannot be a numbered parameter");
                       (yyval.nd) = 0;
                     }
-#line 10813 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10820 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 551: /* f_norm_arg: f_bad_arg  */
-#line 4294 "mrbgems/mruby-compiler/core/parse.y"
+#line 4301 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = 0;
                     }
-#line 10821 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10828 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 552: /* f_norm_arg: "local variable or method"  */
-#line 4298 "mrbgems/mruby-compiler/core/parse.y"
+#line 4305 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[0].id));
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 10830 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10837 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 553: /* f_arg_item: f_norm_arg  */
-#line 4305 "mrbgems/mruby-compiler/core/parse.y"
+#line 4312 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_lvar(p, (yyvsp[0].id));
                     }
-#line 10838 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10845 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 554: /* @32: %empty  */
-#line 4309 "mrbgems/mruby-compiler/core/parse.y"
+#line 4316 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = local_switch(p);
                     }
-#line 10846 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10853 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 555: /* f_arg_item: tLPAREN @32 f_margs rparen  */
-#line 4313 "mrbgems/mruby-compiler/core/parse.y"
+#line 4320 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_marg(p, (yyvsp[-1].nd));
                       local_resume(p, (yyvsp[-2].nd));
                       local_add_f(p, 0);
                     }
-#line 10856 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10863 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 556: /* f_arg: f_arg_item  */
-#line 4321 "mrbgems/mruby-compiler/core/parse.y"
+#line 4328 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10864 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10871 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 557: /* f_arg: f_arg ',' f_arg_item  */
-#line 4325 "mrbgems/mruby-compiler/core/parse.y"
+#line 4332 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10872 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10879 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 558: /* f_opt_asgn: "local variable or method" '='  */
-#line 4331 "mrbgems/mruby-compiler/core/parse.y"
+#line 4338 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[-1].id));
                       local_nest(p);
                       (yyval.id) = (yyvsp[-1].id);
                     }
-#line 10882 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10889 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 559: /* f_opt: f_opt_asgn arg  */
-#line 4339 "mrbgems/mruby-compiler/core/parse.y"
+#line 4346 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(sym_to_node((yyvsp[-1].id)), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 10892 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10899 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 560: /* f_block_opt: f_opt_asgn primary_value  */
-#line 4347 "mrbgems/mruby-compiler/core/parse.y"
+#line 4354 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(sym_to_node((yyvsp[-1].id)), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 10902 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10909 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 561: /* f_block_optarg: f_block_opt  */
-#line 4355 "mrbgems/mruby-compiler/core/parse.y"
+#line 4362 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10910 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10917 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 562: /* f_block_optarg: f_block_optarg ',' f_block_opt  */
-#line 4359 "mrbgems/mruby-compiler/core/parse.y"
+#line 4366 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10918 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10925 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 563: /* f_optarg: f_opt  */
-#line 4365 "mrbgems/mruby-compiler/core/parse.y"
+#line 4372 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10926 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10933 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 564: /* f_optarg: f_optarg ',' f_opt  */
-#line 4369 "mrbgems/mruby-compiler/core/parse.y"
+#line 4376 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10934 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10941 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 567: /* f_rest_arg: restarg_mark "local variable or method"  */
-#line 4379 "mrbgems/mruby-compiler/core/parse.y"
+#line 4386 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[0].id));
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 10943 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10950 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 568: /* f_rest_arg: restarg_mark  */
-#line 4384 "mrbgems/mruby-compiler/core/parse.y"
+#line 4391 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = intern_op(mul);
                       local_add_f(p, (yyval.id));
                     }
-#line 10952 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10959 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 571: /* f_block_arg: blkarg_mark "local variable or method"  */
-#line 4395 "mrbgems/mruby-compiler/core/parse.y"
+#line 4402 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 10960 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10967 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 572: /* f_block_arg: blkarg_mark  */
-#line 4399 "mrbgems/mruby-compiler/core/parse.y"
+#line 4406 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = intern_op(and);
                     }
-#line 10968 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10975 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 573: /* opt_f_block_arg: ',' f_block_arg  */
-#line 4405 "mrbgems/mruby-compiler/core/parse.y"
+#line 4412 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 10976 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10983 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 574: /* opt_f_block_arg: none  */
-#line 4409 "mrbgems/mruby-compiler/core/parse.y"
+#line 4416 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = 0;
                     }
-#line 10984 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10991 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 575: /* singleton: var_ref  */
-#line 4415 "mrbgems/mruby-compiler/core/parse.y"
+#line 4422 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       prohibit_literals(p, (yyvsp[0].nd));
                       (yyval.nd) = (yyvsp[0].nd);
                       if (!(yyval.nd)) (yyval.nd) = new_nil(p);
                     }
-#line 10994 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11001 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 576: /* $@33: %empty  */
-#line 4420 "mrbgems/mruby-compiler/core/parse.y"
+#line 4427 "mrbgems/mruby-compiler/core/parse.y"
                       {p->lstate = EXPR_BEG;}
-#line 11000 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11007 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 577: /* singleton: '(' $@33 expr rparen  */
-#line 4421 "mrbgems/mruby-compiler/core/parse.y"
+#line 4428 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       prohibit_literals(p, (yyvsp[-1].nd));
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 11009 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11016 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 579: /* assoc_list: assocs trailer  */
-#line 4429 "mrbgems/mruby-compiler/core/parse.y"
+#line 4436 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 11017 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11024 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 580: /* assocs: assoc  */
-#line 4435 "mrbgems/mruby-compiler/core/parse.y"
+#line 4442 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 11025 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11032 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 581: /* assocs: assocs comma assoc  */
-#line 4439 "mrbgems/mruby-compiler/core/parse.y"
+#line 4446 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 11033 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11040 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 582: /* assoc: arg "=>" arg  */
-#line 4445 "mrbgems/mruby-compiler/core/parse.y"
+#line 4452 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[-2].nd));
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 11043 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11050 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 583: /* assoc: "local variable or method" "label" arg  */
-#line 4451 "mrbgems/mruby-compiler/core/parse.y"
+#line 4458 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(new_sym(p, (yyvsp[-2].id)), (yyvsp[0].nd));
                     }
-#line 11052 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11059 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 584: /* assoc: "local variable or method" "label"  */
-#line 4456 "mrbgems/mruby-compiler/core/parse.y"
+#line 4463 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(new_sym(p, (yyvsp[-1].id)), label_reference(p, (yyvsp[-1].id)));
                     }
-#line 11060 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11067 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 585: /* assoc: "numbered parameter" "label"  */
-#line 4460 "mrbgems/mruby-compiler/core/parse.y"
+#line 4467 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       mrb_sym sym = intern_numparam((yyvsp[-1].num));
                       (yyval.nd) = cons(new_sym(p, sym), label_reference(p, sym));
                     }
-#line 11069 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11076 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 586: /* assoc: "numbered parameter" "label" arg  */
-#line 4465 "mrbgems/mruby-compiler/core/parse.y"
+#line 4472 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(new_sym(p, intern_numparam((yyvsp[-2].num))), (yyvsp[0].nd));
                     }
-#line 11078 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11085 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 587: /* assoc: string_fragment "label" arg  */
-#line 4470 "mrbgems/mruby-compiler/core/parse.y"
+#line 4477 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       if ((yyvsp[-2].nd)->cdr) {
@@ -11094,75 +11101,75 @@ yyreduce:
                         (yyval.nd) = cons(new_sym(p, new_strsym(p, (yyvsp[-2].nd)->car)), (yyvsp[0].nd));
                       }
                     }
-#line 11098 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11105 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 588: /* assoc: "**" arg  */
-#line 4486 "mrbgems/mruby-compiler/core/parse.y"
+#line 4493 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(new_kw_rest_args(p, 0), (yyvsp[0].nd));
                     }
-#line 11107 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11114 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 589: /* assoc: "**"  */
-#line 4491 "mrbgems/mruby-compiler/core/parse.y"
+#line 4498 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(new_kw_rest_args(p, 0), new_lvar(p, intern_op(pow)));
                     }
-#line 11115 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11122 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 602: /* call_op: '.'  */
-#line 4517 "mrbgems/mruby-compiler/core/parse.y"
+#line 4524 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = '.';
                     }
-#line 11123 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11130 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 603: /* call_op: "&."  */
-#line 4521 "mrbgems/mruby-compiler/core/parse.y"
+#line 4528 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = 0;
                     }
-#line 11131 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11138 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 605: /* call_op2: "::"  */
-#line 4528 "mrbgems/mruby-compiler/core/parse.y"
+#line 4535 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = tCOLON2;
                     }
-#line 11139 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11146 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 614: /* term: ';'  */
-#line 4549 "mrbgems/mruby-compiler/core/parse.y"
+#line 4556 "mrbgems/mruby-compiler/core/parse.y"
                       {yyerrok;}
-#line 11145 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11152 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 616: /* nl: '\n'  */
-#line 4554 "mrbgems/mruby-compiler/core/parse.y"
+#line 4561 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lineno += (yyvsp[0].num);
                       p->column = 0;
                     }
-#line 11154 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11161 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 620: /* none: %empty  */
-#line 4566 "mrbgems/mruby-compiler/core/parse.y"
+#line 4573 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 11162 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11169 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
 
-#line 11166 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11173 "mrbgems/mruby-compiler/core/y.tab.c"
 
       default: break;
     }
@@ -11395,7 +11402,7 @@ yyreturnlab:
   return yyresult;
 }
 
-#line 4570 "mrbgems/mruby-compiler/core/parse.y"
+#line 4577 "mrbgems/mruby-compiler/core/parse.y"
 
 #define pylval  (*((YYSTYPE*)(p->ylval)))