Revert "Minimize the changes in #5277"

This reverts commit dc51d89ac22acc60b9bfeed87115863565b74085.

45 files changed, 1050 insertions, 1036 deletions

diff --git a/include/mruby.h b/include/mruby.h
index 57f556e94..aa6d2ab65 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -1298,33 +1298,31 @@ MRB_API void mrb_print_error(mrb_state *mrb);
 /* function for `raisef` formatting */
 MRB_API mrb_value mrb_vformat(mrb_state *mrb, const char *format, va_list ap);
 
-#include <mruby/presym.h>
-
 /* macros to get typical exception objects
    note:
    + those E_* macros requires mrb_state* variable named mrb.
    + exception objects obtained from those macros are local to mrb
 */
-#define E_RUNTIME_ERROR             mrb_exc_get_id(mrb, MRB_SYM(RuntimeError))
-#define E_TYPE_ERROR                mrb_exc_get_id(mrb, MRB_SYM(TypeError))
-#define E_ZERODIV_ERROR             mrb_exc_get_id(mrb, MRB_SYM(ZeroDivisionError))
-#define E_ARGUMENT_ERROR            mrb_exc_get_id(mrb, MRB_SYM(ArgumentError))
-#define E_INDEX_ERROR               mrb_exc_get_id(mrb, MRB_SYM(IndexError))
-#define E_RANGE_ERROR               mrb_exc_get_id(mrb, MRB_SYM(RangeError))
-#define E_NAME_ERROR                mrb_exc_get_id(mrb, MRB_SYM(NameError))
-#define E_NOMETHOD_ERROR            mrb_exc_get_id(mrb, MRB_SYM(NoMethodError))
-#define E_SCRIPT_ERROR              mrb_exc_get_id(mrb, MRB_SYM(ScriptError))
-#define E_SYNTAX_ERROR              mrb_exc_get_id(mrb, MRB_SYM(SyntaxError))
-#define E_LOCALJUMP_ERROR           mrb_exc_get_id(mrb, MRB_SYM(LocalJumpError))
-#define E_REGEXP_ERROR              mrb_exc_get_id(mrb, MRB_SYM(RegexpError))
-#define E_FROZEN_ERROR              mrb_exc_get_id(mrb, MRB_SYM(FrozenError))
-
-#define E_NOTIMP_ERROR              mrb_exc_get_id(mrb, MRB_SYM(NotImplementedError))
+#define E_RUNTIME_ERROR      mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "RuntimeError"))
+#define E_TYPE_ERROR         mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "TypeError"))
+#define E_ZERODIV_ERROR      mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "ZeroDivisionError"))
+#define E_ARGUMENT_ERROR     mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "ArgumentError"))
+#define E_INDEX_ERROR        mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "IndexError"))
+#define E_RANGE_ERROR        mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "RangeError"))
+#define E_NAME_ERROR         mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "NameError"))
+#define E_NOMETHOD_ERROR     mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "NoMethodError"))
+#define E_SCRIPT_ERROR       mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "ScriptError"))
+#define E_SYNTAX_ERROR       mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "SyntaxError"))
+#define E_LOCALJUMP_ERROR    mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "LocalJumpError"))
+#define E_REGEXP_ERROR       mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "RegexpError"))
+#define E_FROZEN_ERROR       mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "FrozenError"))
+
+#define E_NOTIMP_ERROR       mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "NotImplementedError"))
 #ifndef MRB_NO_FLOAT
-#define E_FLOATDOMAIN_ERROR         mrb_exc_get_id(mrb, MRB_SYM(FloatDomainError))
+#define E_FLOATDOMAIN_ERROR  mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "FloatDomainError"))
 #endif
 
-#define E_KEY_ERROR                 mrb_exc_get_id(mrb, MRB_SYM(KeyError))
+#define E_KEY_ERROR          mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "KeyError"))
 
 MRB_API mrb_value mrb_yield(mrb_state *mrb, mrb_value b, mrb_value arg);
 MRB_API mrb_value mrb_yield_argv(mrb_state *mrb, mrb_value b, mrb_int argc, const mrb_value *argv);
@@ -1391,7 +1389,7 @@ MRB_API mrb_value mrb_fiber_alive_p(mrb_state *mrb, mrb_value fib);
  *
  * Implemented in mruby-fiber
  */
-#define E_FIBER_ERROR (mrb_exc_get_id(mrb, MRB_SYM(FiberError)))
+#define E_FIBER_ERROR mrb_exc_get_id(mrb, mrb_intern_lit(mrb, "FiberError"))
 MRB_API void mrb_stack_extend(mrb_state*, mrb_int);
 
 /* memory pool implementation */
@@ -1411,6 +1409,10 @@ MRB_API void mrb_show_copyright(mrb_state *mrb);
 
 MRB_API mrb_value mrb_format(mrb_state *mrb, const char *format, ...);
 
+#ifdef MRB_PRESYM_SCANNING
+# include <mruby/presym/scanning.h>
+#endif
+
 #if 0
 /* memcpy and memset does not work with gdb reverse-next on my box */
 /* use naive memcpy and memset instead */
diff --git a/include/mruby/presym.h b/include/mruby/presym.h
index e3ce9214c..066b675e7 100644
--- a/include/mruby/presym.h
+++ b/include/mruby/presym.h
@@ -9,9 +9,7 @@
 
 #if defined(MRB_NO_PRESYM)
 # include <mruby/presym/disable.h>
-#elif defined(MRB_PRESYM_SCANNING)
-# include <mruby/presym/scanning.h>
-#else
+#elif !defined(MRB_PRESYM_SCANNING)
 # include <mruby/presym/enable.h>
 #endif
 
diff --git a/include/mruby/presym.inc b/include/mruby/presym.inc
deleted file mode 100644
index d5b92430d..000000000
--- a/include/mruby/presym.inc
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
-** @file mruby/presym.inc - Fallback file for Preallocated Symbols
-**
-** See Copyright Notice in mruby.h
-*/
-
-/*
- * Reading this file means you failed to specify `-I<build-dir>/include`
- * in the configuration. I will not use `PRESYM*` macros for compilation.
- */
-
-#define MRB_NO_PRESYM
diff --git a/include/mruby/presym/enable.h b/include/mruby/presym/enable.h
index 4f03e6689..ddeb17e32 100644
--- a/include/mruby/presym/enable.h
+++ b/include/mruby/presym/enable.h
@@ -8,20 +8,6 @@
 #define MRUBY_PRESYM_ENABLE_H
 
 #undef MRB_PRESYM_MAX
-#define MRB_PRESYM_NAMED(lit, num, type, name)
-#define MRB_PRESYM_UNNAMED(lit, num)
-/* test for proper -I `<build-dir>/include` */
-/* fallback `presym.inc` defines `MRB_NO_PRESYM` */
-# include <mruby/presym.inc>
-
-#undef MRB_PRESYM_MAX
-#undef MRB_PRESYM_NAMED
-#undef MRB_PRESYM_UNNAMED
-
-#if defined(MRB_NO_PRESYM)
-# include <mruby/presym/disable.h>
-#else
-
 #define MRB_PRESYM_NAMED(lit, num, type, name) MRB_##type##__##name = (num),
 #define MRB_PRESYM_UNNAMED(lit, num)
 
@@ -52,6 +38,4 @@ enum mruby_presym {
   static const mrb_sym name[] = {__VA_ARGS__};                                \
   static void init_##name(mrb_state *mrb) {}
 
-#endif  /* !MRUBY_NO_PRESYM */
-
 #endif  /* MRUBY_PRESYM_ENABLE_H */
diff --git a/mrbgems/mruby-array-ext/src/array.c b/mrbgems/mruby-array-ext/src/array.c
index f6695f6b6..8df9d7f30 100644
--- a/mrbgems/mruby-array-ext/src/array.c
+++ b/mrbgems/mruby-array-ext/src/array.c
@@ -3,6 +3,7 @@
 #include <mruby/array.h>
 #include <mruby/range.h>
 #include <mruby/hash.h>
+#include <mruby/presym.h>
 
 /*
  *  call-seq:
diff --git a/mrbgems/mruby-bin-debugger/tools/mrdb/apiprint.c b/mrbgems/mruby-bin-debugger/tools/mrdb/apiprint.c
index e18dbcbfc..9093a4f0e 100644
--- a/mrbgems/mruby-bin-debugger/tools/mrdb/apiprint.c
+++ b/mrbgems/mruby-bin-debugger/tools/mrdb/apiprint.c
@@ -11,6 +11,7 @@
 #include <mruby/error.h>
 #include <mruby/numeric.h>
 #include <mruby/string.h>
+#include <mruby/presym.h>
 #include "apiprint.h"
 
 static void
diff --git a/mrbgems/mruby-bin-mirb/tools/mirb/mirb.c b/mrbgems/mruby-bin-mirb/tools/mirb/mirb.c
index c31c22bc9..243666acd 100644
--- a/mrbgems/mruby-bin-mirb/tools/mirb/mirb.c
+++ b/mrbgems/mruby-bin-mirb/tools/mirb/mirb.c
@@ -18,6 +18,7 @@
 #include <mruby/dump.h>
 #include <mruby/string.h>
 #include <mruby/variable.h>
+#include <mruby/presym.h>
 
 #include <stdlib.h>
 #include <string.h>
diff --git a/mrbgems/mruby-compiler/core/codegen.c b/mrbgems/mruby-compiler/core/codegen.c
index a2ac46d40..0d7f615e0 100644
--- a/mrbgems/mruby-compiler/core/codegen.c
+++ b/mrbgems/mruby-compiler/core/codegen.c
@@ -15,6 +15,7 @@
 #include <mruby/numeric.h>
 #include <mruby/string.h>
 #include <mruby/debug.h>
+#include <mruby/presym.h>
 #include "node.h"
 #include <mruby/opcode.h>
 #include <mruby/re.h>
diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
index 3551e8385..1e949a28a 100644
--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -22,6 +22,7 @@
 #include <mruby/throw.h>
 #include <mruby/string.h>
 #include <mruby/dump.h>
+#include <mruby/presym.h>
 #include "node.h"
 
 #define YYLEX_PARAM p
diff --git a/mrbgems/mruby-compiler/core/y.tab.c b/mrbgems/mruby-compiler/core/y.tab.c
index 54db8b85c..9a53bf326 100644
--- a/mrbgems/mruby-compiler/core/y.tab.c
+++ b/mrbgems/mruby-compiler/core/y.tab.c
@@ -85,6 +85,7 @@
 #include <mruby/throw.h>
 #include <mruby/string.h>
 #include <mruby/dump.h>
+#include <mruby/presym.h>
 #include "node.h"
 
 #define YYLEX_PARAM p
@@ -1432,7 +1433,7 @@ heredoc_end(parser_state *p)
 /* xxx ----------------------------- */
 
 
-#line 1436 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 1437 "mrbgems/mruby-compiler/core/y.tab.c"
 
 # ifndef YY_CAST
 #  ifdef __cplusplus
@@ -1604,7 +1605,7 @@ extern int yydebug;
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
 union YYSTYPE
 {
-#line 1378 "mrbgems/mruby-compiler/core/parse.y"
+#line 1379 "mrbgems/mruby-compiler/core/parse.y"
 
     node *nd;
     mrb_sym id;
@@ -1612,7 +1613,7 @@ union YYSTYPE
     stack_type stack;
     const struct vtable *vars;
 
-#line 1616 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 1617 "mrbgems/mruby-compiler/core/y.tab.c"
 
 };
 typedef union YYSTYPE YYSTYPE;
@@ -1998,67 +1999,67 @@ static const yytype_uint8 yytranslate[] =
   /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
 static const yytype_int16 yyrline[] =
 {
-       0,  1548,  1548,  1548,  1559,  1565,  1569,  1574,  1578,  1584,
-    1586,  1585,  1599,  1626,  1632,  1636,  1641,  1645,  1651,  1651,
-    1655,  1659,  1663,  1667,  1671,  1675,  1679,  1684,  1685,  1689,
-    1693,  1697,  1701,  1708,  1711,  1715,  1719,  1723,  1727,  1731,
-    1736,  1740,  1747,  1748,  1752,  1756,  1757,  1761,  1765,  1769,
-    1773,  1777,  1787,  1786,  1801,  1810,  1811,  1814,  1815,  1822,
-    1821,  1836,  1840,  1845,  1849,  1854,  1858,  1863,  1867,  1871,
-    1875,  1879,  1885,  1889,  1895,  1896,  1902,  1906,  1910,  1914,
-    1918,  1922,  1926,  1930,  1934,  1938,  1944,  1945,  1951,  1955,
-    1961,  1965,  1971,  1975,  1979,  1983,  1987,  1991,  1997,  2003,
-    2010,  2014,  2018,  2022,  2026,  2030,  2036,  2042,  2047,  2053,
-    2057,  2060,  2064,  2068,  2075,  2076,  2077,  2078,  2083,  2090,
-    2091,  2094,  2098,  2098,  2104,  2105,  2106,  2107,  2108,  2109,
-    2110,  2111,  2112,  2113,  2114,  2115,  2116,  2117,  2118,  2119,
-    2120,  2121,  2122,  2123,  2124,  2125,  2126,  2127,  2128,  2129,
-    2130,  2131,  2132,  2133,  2136,  2136,  2136,  2137,  2137,  2138,
-    2138,  2138,  2139,  2139,  2139,  2139,  2140,  2140,  2140,  2141,
-    2141,  2141,  2142,  2142,  2142,  2142,  2143,  2143,  2143,  2143,
-    2144,  2144,  2144,  2144,  2145,  2145,  2145,  2145,  2146,  2146,
-    2146,  2146,  2147,  2147,  2150,  2154,  2158,  2162,  2166,  2170,
-    2174,  2179,  2184,  2189,  2193,  2197,  2201,  2205,  2209,  2213,
-    2217,  2221,  2225,  2229,  2233,  2237,  2241,  2245,  2249,  2253,
-    2257,  2261,  2265,  2269,  2273,  2277,  2281,  2285,  2289,  2293,
-    2297,  2301,  2305,  2309,  2313,  2317,  2321,  2325,  2329,  2333,
-    2337,  2345,  2354,  2363,  2373,  2379,  2380,  2385,  2389,  2396,
-    2400,  2408,  2412,  2428,  2454,  2455,  2458,  2459,  2460,  2465,
-    2470,  2477,  2483,  2488,  2493,  2498,  2505,  2505,  2516,  2522,
-    2526,  2532,  2533,  2536,  2542,  2548,  2553,  2560,  2565,  2570,
-    2577,  2578,  2579,  2580,  2581,  2582,  2583,  2584,  2588,  2593,
-    2592,  2604,  2608,  2603,  2613,  2613,  2617,  2621,  2625,  2629,
-    2634,  2639,  2643,  2647,  2651,  2655,  2659,  2660,  2666,  2672,
-    2665,  2684,  2692,  2700,  2700,  2700,  2707,  2707,  2707,  2714,
-    2720,  2725,  2727,  2724,  2736,  2734,  2752,  2757,  2750,  2774,
-    2772,  2788,  2798,  2809,  2813,  2817,  2821,  2827,  2834,  2835,
-    2836,  2839,  2840,  2843,  2844,  2852,  2853,  2859,  2863,  2866,
-    2870,  2874,  2878,  2883,  2887,  2891,  2895,  2901,  2900,  2910,
-    2914,  2918,  2922,  2928,  2933,  2938,  2942,  2946,  2950,  2954,
-    2958,  2962,  2966,  2970,  2974,  2978,  2982,  2986,  2990,  2994,
-    3000,  3005,  3012,  3012,  3016,  3021,  3028,  3032,  3038,  3039,
-    3042,  3047,  3050,  3054,  3060,  3064,  3071,  3070,  3085,  3095,
-    3099,  3104,  3111,  3115,  3119,  3123,  3127,  3131,  3135,  3139,
-    3143,  3150,  3149,  3164,  3163,  3179,  3187,  3196,  3199,  3206,
-    3209,  3213,  3214,  3217,  3221,  3224,  3228,  3231,  3232,  3233,
-    3234,  3237,  3238,  3244,  3245,  3246,  3250,  3256,  3257,  3263,
-    3268,  3267,  3278,  3282,  3288,  3292,  3298,  3302,  3308,  3311,
-    3312,  3315,  3321,  3327,  3328,  3331,  3338,  3337,  3351,  3355,
-    3362,  3367,  3374,  3380,  3381,  3382,  3383,  3384,  3388,  3394,
-    3398,  3404,  3405,  3406,  3410,  3416,  3420,  3424,  3428,  3432,
-    3438,  3442,  3448,  3452,  3456,  3460,  3464,  3468,  3476,  3483,
-    3494,  3495,  3499,  3503,  3502,  3518,  3524,  3542,  3562,  3563,
-    3569,  3575,  3581,  3588,  3593,  3600,  3604,  3610,  3614,  3620,
-    3621,  3624,  3628,  3634,  3638,  3642,  3646,  3652,  3657,  3662,
-    3666,  3670,  3674,  3678,  3682,  3686,  3690,  3694,  3698,  3702,
-    3706,  3710,  3714,  3719,  3725,  3730,  3735,  3740,  3745,  3752,
-    3756,  3763,  3768,  3767,  3779,  3783,  3789,  3797,  3805,  3813,
-    3817,  3823,  3827,  3833,  3834,  3837,  3842,  3849,  3850,  3853,
-    3859,  3863,  3869,  3874,  3874,  3899,  3900,  3906,  3911,  3917,
-    3918,  3921,  3927,  3932,  3942,  3949,  3950,  3951,  3954,  3955,
-    3956,  3957,  3960,  3961,  3962,  3965,  3966,  3969,  3973,  3979,
-    3980,  3986,  3987,  3990,  3991,  3994,  3997,  3998,  3999,  4002,
-    4003,  4004,  4007,  4014,  4015,  4019
+       0,  1549,  1549,  1549,  1560,  1566,  1570,  1575,  1579,  1585,
+    1587,  1586,  1600,  1627,  1633,  1637,  1642,  1646,  1652,  1652,
+    1656,  1660,  1664,  1668,  1672,  1676,  1680,  1685,  1686,  1690,
+    1694,  1698,  1702,  1709,  1712,  1716,  1720,  1724,  1728,  1732,
+    1737,  1741,  1748,  1749,  1753,  1757,  1758,  1762,  1766,  1770,
+    1774,  1778,  1788,  1787,  1802,  1811,  1812,  1815,  1816,  1823,
+    1822,  1837,  1841,  1846,  1850,  1855,  1859,  1864,  1868,  1872,
+    1876,  1880,  1886,  1890,  1896,  1897,  1903,  1907,  1911,  1915,
+    1919,  1923,  1927,  1931,  1935,  1939,  1945,  1946,  1952,  1956,
+    1962,  1966,  1972,  1976,  1980,  1984,  1988,  1992,  1998,  2004,
+    2011,  2015,  2019,  2023,  2027,  2031,  2037,  2043,  2048,  2054,
+    2058,  2061,  2065,  2069,  2076,  2077,  2078,  2079,  2084,  2091,
+    2092,  2095,  2099,  2099,  2105,  2106,  2107,  2108,  2109,  2110,
+    2111,  2112,  2113,  2114,  2115,  2116,  2117,  2118,  2119,  2120,
+    2121,  2122,  2123,  2124,  2125,  2126,  2127,  2128,  2129,  2130,
+    2131,  2132,  2133,  2134,  2137,  2137,  2137,  2138,  2138,  2139,
+    2139,  2139,  2140,  2140,  2140,  2140,  2141,  2141,  2141,  2142,
+    2142,  2142,  2143,  2143,  2143,  2143,  2144,  2144,  2144,  2144,
+    2145,  2145,  2145,  2145,  2146,  2146,  2146,  2146,  2147,  2147,
+    2147,  2147,  2148,  2148,  2151,  2155,  2159,  2163,  2167,  2171,
+    2175,  2180,  2185,  2190,  2194,  2198,  2202,  2206,  2210,  2214,
+    2218,  2222,  2226,  2230,  2234,  2238,  2242,  2246,  2250,  2254,
+    2258,  2262,  2266,  2270,  2274,  2278,  2282,  2286,  2290,  2294,
+    2298,  2302,  2306,  2310,  2314,  2318,  2322,  2326,  2330,  2334,
+    2338,  2346,  2355,  2364,  2374,  2380,  2381,  2386,  2390,  2397,
+    2401,  2409,  2413,  2429,  2455,  2456,  2459,  2460,  2461,  2466,
+    2471,  2478,  2484,  2489,  2494,  2499,  2506,  2506,  2517,  2523,
+    2527,  2533,  2534,  2537,  2543,  2549,  2554,  2561,  2566,  2571,
+    2578,  2579,  2580,  2581,  2582,  2583,  2584,  2585,  2589,  2594,
+    2593,  2605,  2609,  2604,  2614,  2614,  2618,  2622,  2626,  2630,
+    2635,  2640,  2644,  2648,  2652,  2656,  2660,  2661,  2667,  2673,
+    2666,  2685,  2693,  2701,  2701,  2701,  2708,  2708,  2708,  2715,
+    2721,  2726,  2728,  2725,  2737,  2735,  2753,  2758,  2751,  2775,
+    2773,  2789,  2799,  2810,  2814,  2818,  2822,  2828,  2835,  2836,
+    2837,  2840,  2841,  2844,  2845,  2853,  2854,  2860,  2864,  2867,
+    2871,  2875,  2879,  2884,  2888,  2892,  2896,  2902,  2901,  2911,
+    2915,  2919,  2923,  2929,  2934,  2939,  2943,  2947,  2951,  2955,
+    2959,  2963,  2967,  2971,  2975,  2979,  2983,  2987,  2991,  2995,
+    3001,  3006,  3013,  3013,  3017,  3022,  3029,  3033,  3039,  3040,
+    3043,  3048,  3051,  3055,  3061,  3065,  3072,  3071,  3086,  3096,
+    3100,  3105,  3112,  3116,  3120,  3124,  3128,  3132,  3136,  3140,
+    3144,  3151,  3150,  3165,  3164,  3180,  3188,  3197,  3200,  3207,
+    3210,  3214,  3215,  3218,  3222,  3225,  3229,  3232,  3233,  3234,
+    3235,  3238,  3239,  3245,  3246,  3247,  3251,  3257,  3258,  3264,
+    3269,  3268,  3279,  3283,  3289,  3293,  3299,  3303,  3309,  3312,
+    3313,  3316,  3322,  3328,  3329,  3332,  3339,  3338,  3352,  3356,
+    3363,  3368,  3375,  3381,  3382,  3383,  3384,  3385,  3389,  3395,
+    3399,  3405,  3406,  3407,  3411,  3417,  3421,  3425,  3429,  3433,
+    3439,  3443,  3449,  3453,  3457,  3461,  3465,  3469,  3477,  3484,
+    3495,  3496,  3500,  3504,  3503,  3519,  3525,  3543,  3563,  3564,
+    3570,  3576,  3582,  3589,  3594,  3601,  3605,  3611,  3615,  3621,
+    3622,  3625,  3629,  3635,  3639,  3643,  3647,  3653,  3658,  3663,
+    3667,  3671,  3675,  3679,  3683,  3687,  3691,  3695,  3699,  3703,
+    3707,  3711,  3715,  3720,  3726,  3731,  3736,  3741,  3746,  3753,
+    3757,  3764,  3769,  3768,  3780,  3784,  3790,  3798,  3806,  3814,
+    3818,  3824,  3828,  3834,  3835,  3838,  3843,  3850,  3851,  3854,
+    3860,  3864,  3870,  3875,  3875,  3900,  3901,  3907,  3912,  3918,
+    3919,  3922,  3928,  3933,  3943,  3950,  3951,  3952,  3955,  3956,
+    3957,  3958,  3961,  3962,  3963,  3966,  3967,  3970,  3974,  3980,
+    3981,  3987,  3988,  3991,  3992,  3995,  3998,  3999,  4000,  4003,
+    4004,  4005,  4008,  4015,  4016,  4020
 };
 #endif
 
@@ -5916,86 +5917,86 @@ yyreduce:
   switch (yyn)
     {
   case 2:
-#line 1548 "mrbgems/mruby-compiler/core/parse.y"
+#line 1549 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_BEG;
                       if (!p->locals) p->locals = cons(0,0);
                     }
-#line 5925 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 5926 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 3:
-#line 1553 "mrbgems/mruby-compiler/core/parse.y"
+#line 1554 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->tree = new_scope(p, (yyvsp[0].nd));
                       NODE_LINENO(p->tree, (yyvsp[0].nd));
                     }
-#line 5934 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 5935 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 4:
-#line 1560 "mrbgems/mruby-compiler/core/parse.y"
+#line 1561 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 5942 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 5943 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 5:
-#line 1566 "mrbgems/mruby-compiler/core/parse.y"
+#line 1567 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_begin(p, 0);
                     }
-#line 5950 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 5951 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 6:
-#line 1570 "mrbgems/mruby-compiler/core/parse.y"
+#line 1571 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_begin(p, (yyvsp[0].nd));
                       NODE_LINENO((yyval.nd), (yyvsp[0].nd));
                     }
-#line 5959 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 5960 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 7:
-#line 1575 "mrbgems/mruby-compiler/core/parse.y"
+#line 1576 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), newline_node((yyvsp[0].nd)));
                     }
-#line 5967 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 5968 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 8:
-#line 1579 "mrbgems/mruby-compiler/core/parse.y"
+#line 1580 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_begin(p, 0);
                     }
-#line 5975 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 5976 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 10:
-#line 1586 "mrbgems/mruby-compiler/core/parse.y"
+#line 1587 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = local_switch(p);
                       nvars_block(p);
                     }
-#line 5984 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 5985 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 11:
-#line 1591 "mrbgems/mruby-compiler/core/parse.y"
+#line 1592 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "BEGIN not supported");
                       local_resume(p, (yyvsp[-3].nd));
                       nvars_unnest(p);
                       (yyval.nd) = 0;
                     }
-#line 5995 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 5996 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 12:
-#line 1603 "mrbgems/mruby-compiler/core/parse.y"
+#line 1604 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[-2].nd)) {
                         (yyval.nd) = new_rescue(p, (yyvsp[-3].nd), (yyvsp[-2].nd), (yyvsp[-1].nd));
@@ -6017,291 +6018,291 @@ yyreduce:
                         }
                       }
                     }
-#line 6021 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6022 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 13:
-#line 1627 "mrbgems/mruby-compiler/core/parse.y"
+#line 1628 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 6029 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6030 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 14:
-#line 1633 "mrbgems/mruby-compiler/core/parse.y"
+#line 1634 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_begin(p, 0);
                     }
-#line 6037 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6038 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 15:
-#line 1637 "mrbgems/mruby-compiler/core/parse.y"
+#line 1638 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_begin(p, (yyvsp[0].nd));
                       NODE_LINENO((yyval.nd), (yyvsp[0].nd));
                     }
-#line 6046 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6047 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 16:
-#line 1642 "mrbgems/mruby-compiler/core/parse.y"
+#line 1643 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), newline_node((yyvsp[0].nd)));
                     }
-#line 6054 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6055 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 17:
-#line 1646 "mrbgems/mruby-compiler/core/parse.y"
+#line 1647 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_begin(p, (yyvsp[0].nd));
                     }
-#line 6062 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6063 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 18:
-#line 1651 "mrbgems/mruby-compiler/core/parse.y"
+#line 1652 "mrbgems/mruby-compiler/core/parse.y"
                                      {p->lstate = EXPR_FNAME;}
-#line 6068 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6069 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 19:
-#line 1652 "mrbgems/mruby-compiler/core/parse.y"
+#line 1653 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_alias(p, (yyvsp[-2].id), (yyvsp[0].id));
                     }
-#line 6076 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6077 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 20:
-#line 1656 "mrbgems/mruby-compiler/core/parse.y"
+#line 1657 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 6084 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6085 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 21:
-#line 1660 "mrbgems/mruby-compiler/core/parse.y"
+#line 1661 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd), 0);
                     }
-#line 6092 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6093 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 22:
-#line 1664 "mrbgems/mruby-compiler/core/parse.y"
+#line 1665 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_unless(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd), 0);
                     }
-#line 6100 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6101 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 23:
-#line 1668 "mrbgems/mruby-compiler/core/parse.y"
+#line 1669 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_while(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd));
                     }
-#line 6108 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6109 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 24:
-#line 1672 "mrbgems/mruby-compiler/core/parse.y"
+#line 1673 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_until(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd));
                     }
-#line 6116 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6117 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 25:
-#line 1676 "mrbgems/mruby-compiler/core/parse.y"
+#line 1677 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_mod_rescue(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6124 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6125 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 26:
-#line 1680 "mrbgems/mruby-compiler/core/parse.y"
+#line 1681 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "END not supported");
                       (yyval.nd) = new_postexe(p, (yyvsp[-1].nd));
                     }
-#line 6133 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6134 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 28:
-#line 1686 "mrbgems/mruby-compiler/core/parse.y"
+#line 1687 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6141 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6142 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 29:
-#line 1690 "mrbgems/mruby-compiler/core/parse.y"
+#line 1691 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_asgn(p, (yyvsp[-2].nd), new_array(p, (yyvsp[0].nd)));
                     }
-#line 6149 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6150 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 30:
-#line 1694 "mrbgems/mruby-compiler/core/parse.y"
+#line 1695 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6157 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6158 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 31:
-#line 1698 "mrbgems/mruby-compiler/core/parse.y"
+#line 1699 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-2].nd), new_array(p, (yyvsp[0].nd)));
                     }
-#line 6165 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6166 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 32:
-#line 1702 "mrbgems/mruby-compiler/core/parse.y"
+#line 1703 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *lhs = new_lvar(p, (yyvsp[0].id));
                       void_expr_error(p, (yyvsp[-2].nd));
                       assignable(p, lhs);
                       (yyval.nd) = new_asgn(p, lhs, (yyvsp[-2].nd));
                     }
-#line 6176 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6177 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 34:
-#line 1712 "mrbgems/mruby-compiler/core/parse.y"
+#line 1713 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_asgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6184 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6185 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 35:
-#line 1716 "mrbgems/mruby-compiler/core/parse.y"
+#line 1717 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, (yyvsp[-2].nd), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 6192 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6193 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 36:
-#line 1720 "mrbgems/mruby-compiler/core/parse.y"
+#line 1721 "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 6200 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6201 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 37:
-#line 1724 "mrbgems/mruby-compiler/core/parse.y"
+#line 1725 "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 6208 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6209 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 38:
-#line 1728 "mrbgems/mruby-compiler/core/parse.y"
+#line 1729 "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 6216 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6217 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 39:
-#line 1732 "mrbgems/mruby-compiler/core/parse.y"
+#line 1733 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "constant re-assignment");
                       (yyval.nd) = 0;
                     }
-#line 6225 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6226 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 40:
-#line 1737 "mrbgems/mruby-compiler/core/parse.y"
+#line 1738 "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 6233 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6234 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 41:
-#line 1741 "mrbgems/mruby-compiler/core/parse.y"
+#line 1742 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = new_begin(p, 0);
                     }
-#line 6242 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6243 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 43:
-#line 1749 "mrbgems/mruby-compiler/core/parse.y"
+#line 1750 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_mod_rescue(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6250 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6251 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 46:
-#line 1758 "mrbgems/mruby-compiler/core/parse.y"
+#line 1759 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_and(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6258 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6259 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 47:
-#line 1762 "mrbgems/mruby-compiler/core/parse.y"
+#line 1763 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_or(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6266 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6267 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 48:
-#line 1766 "mrbgems/mruby-compiler/core/parse.y"
+#line 1767 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "!");
                     }
-#line 6274 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6275 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 49:
-#line 1770 "mrbgems/mruby-compiler/core/parse.y"
+#line 1771 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "!");
                     }
-#line 6282 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6283 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 51:
-#line 1778 "mrbgems/mruby-compiler/core/parse.y"
+#line 1779 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_def(p, (yyvsp[0].id), nint(p->cmdarg_stack), local_switch(p));
                       p->cmdarg_stack = 0;
                       p->in_def++;
                       nvars_block(p);
                     }
-#line 6293 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6294 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 52:
-#line 1787 "mrbgems/mruby-compiler/core/parse.y"
+#line 1788 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_FNAME;
                     }
-#line 6301 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6302 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 53:
-#line 1791 "mrbgems/mruby-compiler/core/parse.y"
+#line 1792 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_sdef(p, (yyvsp[-3].nd), (yyvsp[0].id), nint(p->cmdarg_stack), local_switch(p));
                       p->cmdarg_stack = 0;
@@ -6310,1054 +6311,1054 @@ yyreduce:
                       nvars_block(p);
                       p->lstate = EXPR_ENDFN; /* force for args */
                     }
-#line 6314 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6315 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 54:
-#line 1802 "mrbgems/mruby-compiler/core/parse.y"
+#line 1803 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (!(yyvsp[0].nd)) (yyval.nd) = new_nil(p);
                       else {
                         (yyval.nd) = (yyvsp[0].nd);
                       }
                     }
-#line 6325 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6326 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 58:
-#line 1816 "mrbgems/mruby-compiler/core/parse.y"
+#line 1817 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 6333 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6334 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 59:
-#line 1822 "mrbgems/mruby-compiler/core/parse.y"
+#line 1823 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                     }
-#line 6342 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6343 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 60:
-#line 1829 "mrbgems/mruby-compiler/core/parse.y"
+#line 1830 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block(p, (yyvsp[-2].nd), (yyvsp[-1].nd));
                       local_unnest(p);
                       nvars_unnest(p);
                     }
-#line 6352 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6353 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 61:
-#line 1837 "mrbgems/mruby-compiler/core/parse.y"
+#line 1838 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 6360 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6361 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 62:
-#line 1841 "mrbgems/mruby-compiler/core/parse.y"
+#line 1842 "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 6369 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6370 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 63:
-#line 1846 "mrbgems/mruby-compiler/core/parse.y"
+#line 1847 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 6377 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6378 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 64:
-#line 1850 "mrbgems/mruby-compiler/core/parse.y"
+#line 1851 "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 6386 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6387 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 65:
-#line 1855 "mrbgems/mruby-compiler/core/parse.y"
+#line 1856 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), tCOLON2);
                     }
-#line 6394 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6395 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 66:
-#line 1859 "mrbgems/mruby-compiler/core/parse.y"
+#line 1860 "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 6403 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6404 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 67:
-#line 1864 "mrbgems/mruby-compiler/core/parse.y"
+#line 1865 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_super(p, (yyvsp[0].nd));
                     }
-#line 6411 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6412 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 68:
-#line 1868 "mrbgems/mruby-compiler/core/parse.y"
+#line 1869 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_yield(p, (yyvsp[0].nd));
                     }
-#line 6419 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6420 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 69:
-#line 1872 "mrbgems/mruby-compiler/core/parse.y"
+#line 1873 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_return(p, ret_args(p, (yyvsp[0].nd)));
                     }
-#line 6427 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6428 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 70:
-#line 1876 "mrbgems/mruby-compiler/core/parse.y"
+#line 1877 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_break(p, ret_args(p, (yyvsp[0].nd)));
                     }
-#line 6435 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6436 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 71:
-#line 1880 "mrbgems/mruby-compiler/core/parse.y"
+#line 1881 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_next(p, ret_args(p, (yyvsp[0].nd)));
                     }
-#line 6443 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6444 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 72:
-#line 1886 "mrbgems/mruby-compiler/core/parse.y"
+#line 1887 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 6451 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6452 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 73:
-#line 1890 "mrbgems/mruby-compiler/core/parse.y"
+#line 1891 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 6459 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6460 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 75:
-#line 1897 "mrbgems/mruby-compiler/core/parse.y"
+#line 1898 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 6467 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6468 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 76:
-#line 1903 "mrbgems/mruby-compiler/core/parse.y"
+#line 1904 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 6475 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6476 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 77:
-#line 1907 "mrbgems/mruby-compiler/core/parse.y"
+#line 1908 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(push((yyvsp[-1].nd),(yyvsp[0].nd)));
                     }
-#line 6483 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6484 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 78:
-#line 1911 "mrbgems/mruby-compiler/core/parse.y"
+#line 1912 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6491 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6492 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 79:
-#line 1915 "mrbgems/mruby-compiler/core/parse.y"
+#line 1916 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-4].nd), (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6499 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6500 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 80:
-#line 1919 "mrbgems/mruby-compiler/core/parse.y"
+#line 1920 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2((yyvsp[-1].nd), new_nil(p));
                     }
-#line 6507 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6508 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 81:
-#line 1923 "mrbgems/mruby-compiler/core/parse.y"
+#line 1924 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-3].nd), new_nil(p), (yyvsp[0].nd));
                     }
-#line 6515 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6516 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 82:
-#line 1927 "mrbgems/mruby-compiler/core/parse.y"
+#line 1928 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2(0, (yyvsp[0].nd));
                     }
-#line 6523 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6524 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 83:
-#line 1931 "mrbgems/mruby-compiler/core/parse.y"
+#line 1932 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6531 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6532 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 84:
-#line 1935 "mrbgems/mruby-compiler/core/parse.y"
+#line 1936 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2(0, new_nil(p));
                     }
-#line 6539 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6540 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 85:
-#line 1939 "mrbgems/mruby-compiler/core/parse.y"
+#line 1940 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, new_nil(p), (yyvsp[0].nd));
                     }
-#line 6547 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6548 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 87:
-#line 1946 "mrbgems/mruby-compiler/core/parse.y"
+#line 1947 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-1].nd), NULL);
                     }
-#line 6555 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6556 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 88:
-#line 1952 "mrbgems/mruby-compiler/core/parse.y"
+#line 1953 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[-1].nd));
                     }
-#line 6563 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6564 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 89:
-#line 1956 "mrbgems/mruby-compiler/core/parse.y"
+#line 1957 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[-1].nd));
                     }
-#line 6571 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6572 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 90:
-#line 1962 "mrbgems/mruby-compiler/core/parse.y"
+#line 1963 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 6579 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6580 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 91:
-#line 1966 "mrbgems/mruby-compiler/core/parse.y"
+#line 1967 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 6587 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6588 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 92:
-#line 1972 "mrbgems/mruby-compiler/core/parse.y"
+#line 1973 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       assignable(p, (yyvsp[0].nd));
                     }
-#line 6595 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6596 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 93:
-#line 1976 "mrbgems/mruby-compiler/core/parse.y"
+#line 1977 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), intern_op(aref), (yyvsp[-1].nd), '.');
                     }
-#line 6603 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6604 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 94:
-#line 1980 "mrbgems/mruby-compiler/core/parse.y"
+#line 1981 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 6611 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6612 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 95:
-#line 1984 "mrbgems/mruby-compiler/core/parse.y"
+#line 1985 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, tCOLON2);
                     }
-#line 6619 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6620 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 96:
-#line 1988 "mrbgems/mruby-compiler/core/parse.y"
+#line 1989 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 6627 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6628 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 97:
-#line 1992 "mrbgems/mruby-compiler/core/parse.y"
+#line 1993 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(p, "dynamic constant assignment");
                       (yyval.nd) = new_colon2(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 6637 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6638 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 98:
-#line 1998 "mrbgems/mruby-compiler/core/parse.y"
+#line 1999 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(p, "dynamic constant assignment");
                       (yyval.nd) = new_colon3(p, (yyvsp[0].id));
                     }
-#line 6647 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6648 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 99:
-#line 2004 "mrbgems/mruby-compiler/core/parse.y"
+#line 2005 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[0].nd));
                       (yyval.nd) = 0;
                     }
-#line 6656 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6657 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 100:
-#line 2011 "mrbgems/mruby-compiler/core/parse.y"
+#line 2012 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       assignable(p, (yyvsp[0].nd));
                     }
-#line 6664 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6665 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 101:
-#line 2015 "mrbgems/mruby-compiler/core/parse.y"
+#line 2016 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), intern_op(aref), (yyvsp[-1].nd), '.');
                     }
-#line 6672 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6673 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 102:
-#line 2019 "mrbgems/mruby-compiler/core/parse.y"
+#line 2020 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 6680 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6681 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 103:
-#line 2023 "mrbgems/mruby-compiler/core/parse.y"
+#line 2024 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, tCOLON2);
                     }
-#line 6688 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6689 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 104:
-#line 2027 "mrbgems/mruby-compiler/core/parse.y"
+#line 2028 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 6696 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6697 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 105:
-#line 2031 "mrbgems/mruby-compiler/core/parse.y"
+#line 2032 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(p, "dynamic constant assignment");
                       (yyval.nd) = new_colon2(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 6706 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6707 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 106:
-#line 2037 "mrbgems/mruby-compiler/core/parse.y"
+#line 2038 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(p, "dynamic constant assignment");
                       (yyval.nd) = new_colon3(p, (yyvsp[0].id));
                     }
-#line 6716 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6717 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 107:
-#line 2043 "mrbgems/mruby-compiler/core/parse.y"
+#line 2044 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[0].nd));
                       (yyval.nd) = 0;
                     }
-#line 6725 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6726 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 108:
-#line 2048 "mrbgems/mruby-compiler/core/parse.y"
+#line 2049 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "can't assign to numbered parameter");
                     }
-#line 6733 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6734 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 109:
-#line 2054 "mrbgems/mruby-compiler/core/parse.y"
+#line 2055 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "class/module name must be CONSTANT");
                     }
-#line 6741 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6742 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 111:
-#line 2061 "mrbgems/mruby-compiler/core/parse.y"
+#line 2062 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(nint(1), nsym((yyvsp[0].id)));
                     }
-#line 6749 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6750 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 112:
-#line 2065 "mrbgems/mruby-compiler/core/parse.y"
+#line 2066 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(nint(0), nsym((yyvsp[0].id)));
                     }
-#line 6757 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6758 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 113:
-#line 2069 "mrbgems/mruby-compiler/core/parse.y"
+#line 2070 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = cons((yyvsp[-2].nd), nsym((yyvsp[0].id)));
                     }
-#line 6766 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6767 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 117:
-#line 2079 "mrbgems/mruby-compiler/core/parse.y"
+#line 2080 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_ENDFN;
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 6775 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6776 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 118:
-#line 2084 "mrbgems/mruby-compiler/core/parse.y"
+#line 2085 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_ENDFN;
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 6784 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6785 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 121:
-#line 2095 "mrbgems/mruby-compiler/core/parse.y"
+#line 2096 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_undef(p, (yyvsp[0].id));
                     }
-#line 6792 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6793 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 122:
-#line 2098 "mrbgems/mruby-compiler/core/parse.y"
+#line 2099 "mrbgems/mruby-compiler/core/parse.y"
                                  {p->lstate = EXPR_FNAME;}
-#line 6798 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6799 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 123:
-#line 2099 "mrbgems/mruby-compiler/core/parse.y"
+#line 2100 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-3].nd), nsym((yyvsp[0].id)));
                     }
-#line 6806 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6807 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 124:
-#line 2104 "mrbgems/mruby-compiler/core/parse.y"
+#line 2105 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(or);     }
-#line 6812 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6813 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 125:
-#line 2105 "mrbgems/mruby-compiler/core/parse.y"
+#line 2106 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(xor);    }
-#line 6818 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6819 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 126:
-#line 2106 "mrbgems/mruby-compiler/core/parse.y"
+#line 2107 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(and);    }
-#line 6824 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6825 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 127:
-#line 2107 "mrbgems/mruby-compiler/core/parse.y"
+#line 2108 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(cmp);    }
-#line 6830 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6831 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 128:
-#line 2108 "mrbgems/mruby-compiler/core/parse.y"
+#line 2109 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(eq);     }
-#line 6836 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6837 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 129:
-#line 2109 "mrbgems/mruby-compiler/core/parse.y"
+#line 2110 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(eqq);    }
-#line 6842 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6843 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 130:
-#line 2110 "mrbgems/mruby-compiler/core/parse.y"
+#line 2111 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(match);  }
-#line 6848 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6849 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 131:
-#line 2111 "mrbgems/mruby-compiler/core/parse.y"
+#line 2112 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(nmatch); }
-#line 6854 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6855 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 132:
-#line 2112 "mrbgems/mruby-compiler/core/parse.y"
+#line 2113 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(gt);     }
-#line 6860 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6861 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 133:
-#line 2113 "mrbgems/mruby-compiler/core/parse.y"
+#line 2114 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(ge);     }
-#line 6866 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6867 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 134:
-#line 2114 "mrbgems/mruby-compiler/core/parse.y"
+#line 2115 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(lt);     }
-#line 6872 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6873 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 135:
-#line 2115 "mrbgems/mruby-compiler/core/parse.y"
+#line 2116 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(le);     }
-#line 6878 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6879 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 136:
-#line 2116 "mrbgems/mruby-compiler/core/parse.y"
+#line 2117 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(neq);    }
-#line 6884 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6885 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 137:
-#line 2117 "mrbgems/mruby-compiler/core/parse.y"
+#line 2118 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(lshift); }
-#line 6890 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6891 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 138:
-#line 2118 "mrbgems/mruby-compiler/core/parse.y"
+#line 2119 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(rshift); }
-#line 6896 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6897 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 139:
-#line 2119 "mrbgems/mruby-compiler/core/parse.y"
+#line 2120 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(add);    }
-#line 6902 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6903 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 140:
-#line 2120 "mrbgems/mruby-compiler/core/parse.y"
+#line 2121 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(sub);    }
-#line 6908 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6909 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 141:
-#line 2121 "mrbgems/mruby-compiler/core/parse.y"
+#line 2122 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(mul);    }
-#line 6914 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6915 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 142:
-#line 2122 "mrbgems/mruby-compiler/core/parse.y"
+#line 2123 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(mul);    }
-#line 6920 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6921 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 143:
-#line 2123 "mrbgems/mruby-compiler/core/parse.y"
+#line 2124 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(div);    }
-#line 6926 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6927 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 144:
-#line 2124 "mrbgems/mruby-compiler/core/parse.y"
+#line 2125 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(mod);    }
-#line 6932 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6933 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 145:
-#line 2125 "mrbgems/mruby-compiler/core/parse.y"
+#line 2126 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(pow);    }
-#line 6938 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6939 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 146:
-#line 2126 "mrbgems/mruby-compiler/core/parse.y"
+#line 2127 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(pow);    }
-#line 6944 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6945 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 147:
-#line 2127 "mrbgems/mruby-compiler/core/parse.y"
+#line 2128 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(not);    }
-#line 6950 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6951 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 148:
-#line 2128 "mrbgems/mruby-compiler/core/parse.y"
+#line 2129 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(neg);    }
-#line 6956 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6957 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 149:
-#line 2129 "mrbgems/mruby-compiler/core/parse.y"
+#line 2130 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(plus);   }
-#line 6962 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6963 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 150:
-#line 2130 "mrbgems/mruby-compiler/core/parse.y"
+#line 2131 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(minus);  }
-#line 6968 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6969 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 151:
-#line 2131 "mrbgems/mruby-compiler/core/parse.y"
+#line 2132 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(aref);   }
-#line 6974 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6975 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 152:
-#line 2132 "mrbgems/mruby-compiler/core/parse.y"
+#line 2133 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(aset);   }
-#line 6980 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6981 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 153:
-#line 2133 "mrbgems/mruby-compiler/core/parse.y"
+#line 2134 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(tick);   }
-#line 6986 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6987 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 194:
-#line 2151 "mrbgems/mruby-compiler/core/parse.y"
+#line 2152 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_asgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 6994 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 6995 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 195:
-#line 2155 "mrbgems/mruby-compiler/core/parse.y"
+#line 2156 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, (yyvsp[-2].nd), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7002 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7003 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 196:
-#line 2159 "mrbgems/mruby-compiler/core/parse.y"
+#line 2160 "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 7010 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7011 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 197:
-#line 2163 "mrbgems/mruby-compiler/core/parse.y"
+#line 2164 "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 7018 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7019 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 198:
-#line 2167 "mrbgems/mruby-compiler/core/parse.y"
+#line 2168 "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 7026 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7027 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 199:
-#line 2171 "mrbgems/mruby-compiler/core/parse.y"
+#line 2172 "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 7034 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7035 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 200:
-#line 2175 "mrbgems/mruby-compiler/core/parse.y"
+#line 2176 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "constant re-assignment");
                       (yyval.nd) = new_begin(p, 0);
                     }
-#line 7043 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7044 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 201:
-#line 2180 "mrbgems/mruby-compiler/core/parse.y"
+#line 2181 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "constant re-assignment");
                       (yyval.nd) = new_begin(p, 0);
                     }
-#line 7052 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7053 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 202:
-#line 2185 "mrbgems/mruby-compiler/core/parse.y"
+#line 2186 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = new_begin(p, 0);
                     }
-#line 7061 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7062 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 203:
-#line 2190 "mrbgems/mruby-compiler/core/parse.y"
+#line 2191 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot2(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7069 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7070 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 204:
-#line 2194 "mrbgems/mruby-compiler/core/parse.y"
+#line 2195 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot2(p, (yyvsp[-1].nd), new_nil(p));
                     }
-#line 7077 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7078 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 205:
-#line 2198 "mrbgems/mruby-compiler/core/parse.y"
+#line 2199 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot2(p, new_nil(p), (yyvsp[0].nd));
                     }
-#line 7085 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7086 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 206:
-#line 2202 "mrbgems/mruby-compiler/core/parse.y"
+#line 2203 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot3(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7093 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7094 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 207:
-#line 2206 "mrbgems/mruby-compiler/core/parse.y"
+#line 2207 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot3(p, (yyvsp[-1].nd), new_nil(p));
                     }
-#line 7101 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7102 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 208:
-#line 2210 "mrbgems/mruby-compiler/core/parse.y"
+#line 2211 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot3(p, new_nil(p), (yyvsp[0].nd));
                     }
-#line 7109 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7110 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 209:
-#line 2214 "mrbgems/mruby-compiler/core/parse.y"
+#line 2215 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "+", (yyvsp[0].nd));
                     }
-#line 7117 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7118 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 210:
-#line 2218 "mrbgems/mruby-compiler/core/parse.y"
+#line 2219 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "-", (yyvsp[0].nd));
                     }
-#line 7125 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7126 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 211:
-#line 2222 "mrbgems/mruby-compiler/core/parse.y"
+#line 2223 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "*", (yyvsp[0].nd));
                     }
-#line 7133 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7134 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 212:
-#line 2226 "mrbgems/mruby-compiler/core/parse.y"
+#line 2227 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "/", (yyvsp[0].nd));
                     }
-#line 7141 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7142 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 213:
-#line 2230 "mrbgems/mruby-compiler/core/parse.y"
+#line 2231 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "%", (yyvsp[0].nd));
                     }
-#line 7149 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7150 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 214:
-#line 2234 "mrbgems/mruby-compiler/core/parse.y"
+#line 2235 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "**", (yyvsp[0].nd));
                     }
-#line 7157 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7158 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 215:
-#line 2238 "mrbgems/mruby-compiler/core/parse.y"
+#line 2239 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, call_bin_op(p, (yyvsp[-2].nd), "**", (yyvsp[0].nd)), "-@");
                     }
-#line 7165 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7166 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 216:
-#line 2242 "mrbgems/mruby-compiler/core/parse.y"
+#line 2243 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, call_bin_op(p, (yyvsp[-2].nd), "**", (yyvsp[0].nd)), "-@");
                     }
-#line 7173 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7174 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 217:
-#line 2246 "mrbgems/mruby-compiler/core/parse.y"
+#line 2247 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, (yyvsp[0].nd), "+@");
                     }
-#line 7181 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7182 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 218:
-#line 2250 "mrbgems/mruby-compiler/core/parse.y"
+#line 2251 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, (yyvsp[0].nd), "-@");
                     }
-#line 7189 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7190 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 219:
-#line 2254 "mrbgems/mruby-compiler/core/parse.y"
+#line 2255 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "|", (yyvsp[0].nd));
                     }
-#line 7197 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7198 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 220:
-#line 2258 "mrbgems/mruby-compiler/core/parse.y"
+#line 2259 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "^", (yyvsp[0].nd));
                     }
-#line 7205 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7206 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 221:
-#line 2262 "mrbgems/mruby-compiler/core/parse.y"
+#line 2263 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "&", (yyvsp[0].nd));
                     }
-#line 7213 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7214 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 222:
-#line 2266 "mrbgems/mruby-compiler/core/parse.y"
+#line 2267 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<=>", (yyvsp[0].nd));
                     }
-#line 7221 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7222 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 223:
-#line 2270 "mrbgems/mruby-compiler/core/parse.y"
+#line 2271 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), ">", (yyvsp[0].nd));
                     }
-#line 7229 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7230 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 224:
-#line 2274 "mrbgems/mruby-compiler/core/parse.y"
+#line 2275 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), ">=", (yyvsp[0].nd));
                     }
-#line 7237 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7238 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 225:
-#line 2278 "mrbgems/mruby-compiler/core/parse.y"
+#line 2279 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<", (yyvsp[0].nd));
                     }
-#line 7245 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7246 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 226:
-#line 2282 "mrbgems/mruby-compiler/core/parse.y"
+#line 2283 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<=", (yyvsp[0].nd));
                     }
-#line 7253 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7254 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 227:
-#line 2286 "mrbgems/mruby-compiler/core/parse.y"
+#line 2287 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "==", (yyvsp[0].nd));
                     }
-#line 7261 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7262 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 228:
-#line 2290 "mrbgems/mruby-compiler/core/parse.y"
+#line 2291 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "===", (yyvsp[0].nd));
                     }
-#line 7269 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7270 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 229:
-#line 2294 "mrbgems/mruby-compiler/core/parse.y"
+#line 2295 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "!=", (yyvsp[0].nd));
                     }
-#line 7277 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7278 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 230:
-#line 2298 "mrbgems/mruby-compiler/core/parse.y"
+#line 2299 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "=~", (yyvsp[0].nd));
                     }
-#line 7285 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7286 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 231:
-#line 2302 "mrbgems/mruby-compiler/core/parse.y"
+#line 2303 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "!~", (yyvsp[0].nd));
                     }
-#line 7293 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7294 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 232:
-#line 2306 "mrbgems/mruby-compiler/core/parse.y"
+#line 2307 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "!");
                     }
-#line 7301 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7302 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 233:
-#line 2310 "mrbgems/mruby-compiler/core/parse.y"
+#line 2311 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "~");
                     }
-#line 7309 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7310 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 234:
-#line 2314 "mrbgems/mruby-compiler/core/parse.y"
+#line 2315 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<<", (yyvsp[0].nd));
                     }
-#line 7317 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7318 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 235:
-#line 2318 "mrbgems/mruby-compiler/core/parse.y"
+#line 2319 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), ">>", (yyvsp[0].nd));
                     }
-#line 7325 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7326 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 236:
-#line 2322 "mrbgems/mruby-compiler/core/parse.y"
+#line 2323 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_and(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7333 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7334 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 237:
-#line 2326 "mrbgems/mruby-compiler/core/parse.y"
+#line 2327 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_or(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7341 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7342 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 238:
-#line 2330 "mrbgems/mruby-compiler/core/parse.y"
+#line 2331 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-5].nd)), (yyvsp[-3].nd), (yyvsp[0].nd));
                     }
-#line 7349 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7350 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 239:
-#line 2334 "mrbgems/mruby-compiler/core/parse.y"
+#line 2335 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-5].nd)), (yyvsp[-3].nd), (yyvsp[0].nd));
                     }
-#line 7357 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7358 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 240:
-#line 2338 "mrbgems/mruby-compiler/core/parse.y"
+#line 2339 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       void_expr_error(p, (yyvsp[0].nd));
@@ -7365,11 +7366,11 @@ yyreduce:
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 7369 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7370 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 241:
-#line 2346 "mrbgems/mruby-compiler/core/parse.y"
+#line 2347 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-5].nd);
                       void_expr_error(p, (yyvsp[-2].nd));
@@ -7378,11 +7379,11 @@ yyreduce:
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 7382 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7383 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 242:
-#line 2355 "mrbgems/mruby-compiler/core/parse.y"
+#line 2356 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       void_expr_error(p, (yyvsp[0].nd));
@@ -7391,11 +7392,11 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 7395 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7396 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 243:
-#line 2364 "mrbgems/mruby-compiler/core/parse.y"
+#line 2365 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-5].nd);
                       void_expr_error(p, (yyvsp[-2].nd));
@@ -7405,71 +7406,71 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 7409 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7410 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 244:
-#line 2374 "mrbgems/mruby-compiler/core/parse.y"
+#line 2375 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 7417 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7418 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 246:
-#line 2381 "mrbgems/mruby-compiler/core/parse.y"
+#line 2382 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                       NODE_LINENO((yyval.nd), (yyvsp[-1].nd));
                     }
-#line 7426 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7427 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 247:
-#line 2386 "mrbgems/mruby-compiler/core/parse.y"
+#line 2387 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-3].nd), new_kw_hash(p, (yyvsp[-1].nd)));
                     }
-#line 7434 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7435 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 248:
-#line 2390 "mrbgems/mruby-compiler/core/parse.y"
+#line 2391 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(new_kw_hash(p, (yyvsp[-1].nd)), 0);
                       NODE_LINENO((yyval.nd), (yyvsp[-1].nd));
                     }
-#line 7443 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7444 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 249:
-#line 2397 "mrbgems/mruby-compiler/core/parse.y"
+#line 2398 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 7451 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7452 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 250:
-#line 2401 "mrbgems/mruby-compiler/core/parse.y"
+#line 2402 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[-2].nd));
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = new_mod_rescue(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7461 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7462 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 251:
-#line 2409 "mrbgems/mruby-compiler/core/parse.y"
+#line 2410 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 7469 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7470 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 252:
-#line 2413 "mrbgems/mruby-compiler/core/parse.y"
+#line 2414 "mrbgems/mruby-compiler/core/parse.y"
                     {
 #if 1
                       mrb_sym r = intern_op(mul);
@@ -7485,11 +7486,11 @@ yyreduce:
                                 new_block_arg(p, new_lvar(p, b)));
 #endif
                     }
-#line 7489 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7490 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 253:
-#line 2429 "mrbgems/mruby-compiler/core/parse.y"
+#line 2430 "mrbgems/mruby-compiler/core/parse.y"
                     {
 #if 1
                       mrb_sym r = intern_op(mul);
@@ -7513,373 +7514,373 @@ yyreduce:
                         (yyval.nd) = 0;
                       }
                     }
-#line 7517 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7518 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 258:
-#line 2461 "mrbgems/mruby-compiler/core/parse.y"
+#line 2462 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons((yyvsp[-1].nd),0);
                       NODE_LINENO((yyval.nd), (yyvsp[-1].nd));
                     }
-#line 7526 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7527 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 259:
-#line 2466 "mrbgems/mruby-compiler/core/parse.y"
+#line 2467 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(push((yyvsp[-3].nd), new_kw_hash(p, (yyvsp[-1].nd))), 0);
                       NODE_LINENO((yyval.nd), (yyvsp[-3].nd));
                     }
-#line 7535 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7536 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 260:
-#line 2471 "mrbgems/mruby-compiler/core/parse.y"
+#line 2472 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(list1(new_kw_hash(p, (yyvsp[-1].nd))), 0);
                       NODE_LINENO((yyval.nd), (yyvsp[-1].nd));
                     }
-#line 7544 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7545 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 261:
-#line 2478 "mrbgems/mruby-compiler/core/parse.y"
+#line 2479 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(list1((yyvsp[0].nd)), 0);
                       NODE_LINENO((yyval.nd), (yyvsp[0].nd));
                     }
-#line 7554 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7555 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 262:
-#line 2484 "mrbgems/mruby-compiler/core/parse.y"
+#line 2485 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons((yyvsp[-1].nd), (yyvsp[0].nd));
                       NODE_LINENO((yyval.nd), (yyvsp[-1].nd));
                     }
-#line 7563 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7564 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 263:
-#line 2489 "mrbgems/mruby-compiler/core/parse.y"
+#line 2490 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(list1(new_kw_hash(p, (yyvsp[-1].nd))), (yyvsp[0].nd));
                       NODE_LINENO((yyval.nd), (yyvsp[-1].nd));
                     }
-#line 7572 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7573 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 264:
-#line 2494 "mrbgems/mruby-compiler/core/parse.y"
+#line 2495 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(push((yyvsp[-3].nd), new_kw_hash(p, (yyvsp[-1].nd))), (yyvsp[0].nd));
                       NODE_LINENO((yyval.nd), (yyvsp[-3].nd));
                     }
-#line 7581 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7582 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 265:
-#line 2499 "mrbgems/mruby-compiler/core/parse.y"
+#line 2500 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(0, (yyvsp[0].nd));
                       NODE_LINENO((yyval.nd), (yyvsp[0].nd));
                     }
-#line 7590 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7591 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 266:
-#line 2505 "mrbgems/mruby-compiler/core/parse.y"
+#line 2506 "mrbgems/mruby-compiler/core/parse.y"
                    {
                       (yyval.stack) = p->cmdarg_stack;
                       CMDARG_PUSH(1);
                     }
-#line 7599 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7600 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 267:
-#line 2510 "mrbgems/mruby-compiler/core/parse.y"
+#line 2511 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->cmdarg_stack = (yyvsp[-1].stack);
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 7608 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7609 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 268:
-#line 2517 "mrbgems/mruby-compiler/core/parse.y"
+#line 2518 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block_arg(p, (yyvsp[0].nd));
                     }
-#line 7616 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7617 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 269:
-#line 2523 "mrbgems/mruby-compiler/core/parse.y"
+#line 2524 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 7624 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7625 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 270:
-#line 2527 "mrbgems/mruby-compiler/core/parse.y"
+#line 2528 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 7632 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7633 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 273:
-#line 2537 "mrbgems/mruby-compiler/core/parse.y"
+#line 2538 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons((yyvsp[0].nd), 0);
                       NODE_LINENO((yyval.nd), (yyvsp[0].nd));
                     }
-#line 7642 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7643 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 274:
-#line 2543 "mrbgems/mruby-compiler/core/parse.y"
+#line 2544 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(new_splat(p, (yyvsp[0].nd)), 0);
                       NODE_LINENO((yyval.nd), (yyvsp[0].nd));
                     }
-#line 7652 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7653 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 275:
-#line 2549 "mrbgems/mruby-compiler/core/parse.y"
+#line 2550 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7661 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7662 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 276:
-#line 2554 "mrbgems/mruby-compiler/core/parse.y"
+#line 2555 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = push((yyvsp[-3].nd), new_splat(p, (yyvsp[0].nd)));
                     }
-#line 7670 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7671 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 277:
-#line 2561 "mrbgems/mruby-compiler/core/parse.y"
+#line 2562 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7679 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7680 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 278:
-#line 2566 "mrbgems/mruby-compiler/core/parse.y"
+#line 2567 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = push((yyvsp[-3].nd), new_splat(p, (yyvsp[0].nd)));
                     }
-#line 7688 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7689 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 279:
-#line 2571 "mrbgems/mruby-compiler/core/parse.y"
+#line 2572 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = list1(new_splat(p, (yyvsp[0].nd)));
                     }
-#line 7697 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7698 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 287:
-#line 2585 "mrbgems/mruby-compiler/core/parse.y"
+#line 2586 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_nvar(p, (yyvsp[0].num));
                     }
-#line 7705 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7706 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 288:
-#line 2589 "mrbgems/mruby-compiler/core/parse.y"
+#line 2590 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[0].id), 0);
                     }
-#line 7713 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7714 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 289:
-#line 2593 "mrbgems/mruby-compiler/core/parse.y"
+#line 2594 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.stack) = p->cmdarg_stack;
                       p->cmdarg_stack = 0;
                     }
-#line 7722 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7723 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 290:
-#line 2599 "mrbgems/mruby-compiler/core/parse.y"
+#line 2600 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->cmdarg_stack = (yyvsp[-2].stack);
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 7731 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7732 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 291:
-#line 2604 "mrbgems/mruby-compiler/core/parse.y"
+#line 2605 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.stack) = p->cmdarg_stack;
                       p->cmdarg_stack = 0;
                     }
-#line 7740 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7741 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 292:
-#line 2608 "mrbgems/mruby-compiler/core/parse.y"
+#line 2609 "mrbgems/mruby-compiler/core/parse.y"
                        {p->lstate = EXPR_ENDARG;}
-#line 7746 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7747 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 293:
-#line 2609 "mrbgems/mruby-compiler/core/parse.y"
+#line 2610 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->cmdarg_stack = (yyvsp[-3].stack);
                       (yyval.nd) = (yyvsp[-2].nd);
                     }
-#line 7755 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7756 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 294:
-#line 2613 "mrbgems/mruby-compiler/core/parse.y"
+#line 2614 "mrbgems/mruby-compiler/core/parse.y"
                               {p->lstate = EXPR_ENDARG;}
-#line 7761 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7762 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 295:
-#line 2614 "mrbgems/mruby-compiler/core/parse.y"
+#line 2615 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_nil(p);
                     }
-#line 7769 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7770 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 296:
-#line 2618 "mrbgems/mruby-compiler/core/parse.y"
+#line 2619 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 7777 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7778 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 297:
-#line 2622 "mrbgems/mruby-compiler/core/parse.y"
+#line 2623 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_colon2(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 7785 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7786 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 298:
-#line 2626 "mrbgems/mruby-compiler/core/parse.y"
+#line 2627 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_colon3(p, (yyvsp[0].id));
                     }
-#line 7793 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7794 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 299:
-#line 2630 "mrbgems/mruby-compiler/core/parse.y"
+#line 2631 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_array(p, (yyvsp[-1].nd));
                       NODE_LINENO((yyval.nd), (yyvsp[-1].nd));
                     }
-#line 7802 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7803 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 300:
-#line 2635 "mrbgems/mruby-compiler/core/parse.y"
+#line 2636 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_hash(p, (yyvsp[-1].nd));
                       NODE_LINENO((yyval.nd), (yyvsp[-1].nd));
                     }
-#line 7811 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7812 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 301:
-#line 2640 "mrbgems/mruby-compiler/core/parse.y"
+#line 2641 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_return(p, 0);
                     }
-#line 7819 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7820 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 302:
-#line 2644 "mrbgems/mruby-compiler/core/parse.y"
+#line 2645 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_yield(p, (yyvsp[0].nd));
                     }
-#line 7827 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7828 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 303:
-#line 2648 "mrbgems/mruby-compiler/core/parse.y"
+#line 2649 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[-1].nd)), "!");
                     }
-#line 7835 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7836 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 304:
-#line 2652 "mrbgems/mruby-compiler/core/parse.y"
+#line 2653 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, new_nil(p), "!");
                     }
-#line 7843 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7844 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 305:
-#line 2656 "mrbgems/mruby-compiler/core/parse.y"
+#line 2657 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[-1].id), cons(0, (yyvsp[0].nd)));
                     }
-#line 7851 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7852 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 307:
-#line 2661 "mrbgems/mruby-compiler/core/parse.y"
+#line 2662 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       call_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 7860 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7861 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 308:
-#line 2666 "mrbgems/mruby-compiler/core/parse.y"
+#line 2667 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       (yyval.num) = p->lpar_beg;
                       p->lpar_beg = ++p->paren_nest;
                     }
-#line 7870 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7871 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 309:
-#line 2672 "mrbgems/mruby-compiler/core/parse.y"
+#line 2673 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.stack) = p->cmdarg_stack;
                       p->cmdarg_stack = 0;
                     }
-#line 7879 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7880 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 310:
-#line 2677 "mrbgems/mruby-compiler/core/parse.y"
+#line 2678 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lpar_beg = (yyvsp[-3].num);
                       (yyval.nd) = new_lambda(p, (yyvsp[-2].nd), (yyvsp[0].nd));
@@ -7887,149 +7888,149 @@ yyreduce:
                       p->cmdarg_stack = (yyvsp[-1].stack);
                       CMDARG_LEXPOP();
                     }
-#line 7891 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7892 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 311:
-#line 2688 "mrbgems/mruby-compiler/core/parse.y"
+#line 2689 "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 7900 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7901 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 312:
-#line 2696 "mrbgems/mruby-compiler/core/parse.y"
+#line 2697 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_unless(p, cond((yyvsp[-4].nd)), (yyvsp[-2].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-5].num));
                     }
-#line 7909 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7910 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 313:
-#line 2700 "mrbgems/mruby-compiler/core/parse.y"
+#line 2701 "mrbgems/mruby-compiler/core/parse.y"
                                 {COND_PUSH(1);}
-#line 7915 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7916 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 314:
-#line 2700 "mrbgems/mruby-compiler/core/parse.y"
+#line 2701 "mrbgems/mruby-compiler/core/parse.y"
                                                               {COND_POP();}
-#line 7921 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7922 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 315:
-#line 2703 "mrbgems/mruby-compiler/core/parse.y"
+#line 2704 "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 7930 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7931 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 316:
-#line 2707 "mrbgems/mruby-compiler/core/parse.y"
+#line 2708 "mrbgems/mruby-compiler/core/parse.y"
                                 {COND_PUSH(1);}
-#line 7936 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7937 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 317:
-#line 2707 "mrbgems/mruby-compiler/core/parse.y"
+#line 2708 "mrbgems/mruby-compiler/core/parse.y"
                                                               {COND_POP();}
-#line 7942 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7943 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 318:
-#line 2710 "mrbgems/mruby-compiler/core/parse.y"
+#line 2711 "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 7951 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7952 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 319:
-#line 2717 "mrbgems/mruby-compiler/core/parse.y"
+#line 2718 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_case(p, (yyvsp[-3].nd), (yyvsp[-1].nd));
                     }
-#line 7959 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7960 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 320:
-#line 2721 "mrbgems/mruby-compiler/core/parse.y"
+#line 2722 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_case(p, 0, (yyvsp[-1].nd));
                     }
-#line 7967 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7968 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 321:
-#line 2725 "mrbgems/mruby-compiler/core/parse.y"
+#line 2726 "mrbgems/mruby-compiler/core/parse.y"
                   {COND_PUSH(1);}
-#line 7973 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7974 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 322:
-#line 2727 "mrbgems/mruby-compiler/core/parse.y"
+#line 2728 "mrbgems/mruby-compiler/core/parse.y"
                   {COND_POP();}
-#line 7979 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7980 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 323:
-#line 2730 "mrbgems/mruby-compiler/core/parse.y"
+#line 2731 "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 7988 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7989 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 324:
-#line 2736 "mrbgems/mruby-compiler/core/parse.y"
+#line 2737 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(p, "class definition in method body");
                       (yyval.nd) = local_switch(p);
                       nvars_block(p);
                     }
-#line 7999 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8000 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 325:
-#line 2744 "mrbgems/mruby-compiler/core/parse.y"
+#line 2745 "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 8010 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8011 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 326:
-#line 2752 "mrbgems/mruby-compiler/core/parse.y"
+#line 2753 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = p->in_def;
                       p->in_def = 0;
                     }
-#line 8019 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8020 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 327:
-#line 2757 "mrbgems/mruby-compiler/core/parse.y"
+#line 2758 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(local_switch(p), nint(p->in_single));
                       nvars_block(p);
                       p->in_single = 0;
                     }
-#line 8029 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8030 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 328:
-#line 2764 "mrbgems/mruby-compiler/core/parse.y"
+#line 2765 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_sclass(p, (yyvsp[-5].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-7].num));
@@ -8038,44 +8039,44 @@ yyreduce:
                       p->in_def = (yyvsp[-4].num);
                       p->in_single = intn((yyvsp[-2].nd)->cdr);
                     }
-#line 8042 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8043 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 329:
-#line 2774 "mrbgems/mruby-compiler/core/parse.y"
+#line 2775 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(p, "module definition in method body");
                       (yyval.nd) = local_switch(p);
                       nvars_block(p);
                     }
-#line 8053 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8054 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 330:
-#line 2782 "mrbgems/mruby-compiler/core/parse.y"
+#line 2783 "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 8064 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8065 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 331:
-#line 2792 "mrbgems/mruby-compiler/core/parse.y"
+#line 2793 "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 8075 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8076 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 332:
-#line 2802 "mrbgems/mruby-compiler/core/parse.y"
+#line 2803 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       defs_setup(p, (yyval.nd), (yyvsp[-2].nd), (yyvsp[-1].nd));
@@ -8083,451 +8084,451 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 8087 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8088 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 333:
-#line 2810 "mrbgems/mruby-compiler/core/parse.y"
+#line 2811 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_break(p, 0);
                     }
-#line 8095 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8096 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 334:
-#line 2814 "mrbgems/mruby-compiler/core/parse.y"
+#line 2815 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_next(p, 0);
                     }
-#line 8103 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8104 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 335:
-#line 2818 "mrbgems/mruby-compiler/core/parse.y"
+#line 2819 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_redo(p);
                     }
-#line 8111 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8112 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 336:
-#line 2822 "mrbgems/mruby-compiler/core/parse.y"
+#line 2823 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_retry(p);
                     }
-#line 8119 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8120 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 337:
-#line 2828 "mrbgems/mruby-compiler/core/parse.y"
+#line 2829 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                       if (!(yyval.nd)) (yyval.nd) = new_nil(p);
                     }
-#line 8128 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8129 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 344:
-#line 2847 "mrbgems/mruby-compiler/core/parse.y"
+#line 2848 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-3].nd)), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 8136 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8137 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 346:
-#line 2854 "mrbgems/mruby-compiler/core/parse.y"
+#line 2855 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8144 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8145 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 347:
-#line 2860 "mrbgems/mruby-compiler/core/parse.y"
+#line 2861 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(list1((yyvsp[0].nd)));
                     }
-#line 8152 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8153 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 349:
-#line 2867 "mrbgems/mruby-compiler/core/parse.y"
+#line 2868 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[0].nd),0,0);
                     }
-#line 8160 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8161 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 350:
-#line 2871 "mrbgems/mruby-compiler/core/parse.y"
+#line 2872 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-3].nd), new_arg(p, (yyvsp[0].id)), 0);
                     }
-#line 8168 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8169 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 351:
-#line 2875 "mrbgems/mruby-compiler/core/parse.y"
+#line 2876 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-5].nd), new_arg(p, (yyvsp[-2].id)), (yyvsp[0].nd));
                     }
-#line 8176 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8177 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 352:
-#line 2879 "mrbgems/mruby-compiler/core/parse.y"
+#line 2880 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, 0);
                       (yyval.nd) = list3((yyvsp[-2].nd), nint(-1), 0);
                     }
-#line 8185 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8186 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 353:
-#line 2884 "mrbgems/mruby-compiler/core/parse.y"
+#line 2885 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-4].nd), nint(-1), (yyvsp[0].nd));
                     }
-#line 8193 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8194 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 354:
-#line 2888 "mrbgems/mruby-compiler/core/parse.y"
+#line 2889 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, new_arg(p, (yyvsp[0].id)), 0);
                     }
-#line 8201 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8202 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 355:
-#line 2892 "mrbgems/mruby-compiler/core/parse.y"
+#line 2893 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, new_arg(p, (yyvsp[-2].id)), (yyvsp[0].nd));
                     }
-#line 8209 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8210 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 356:
-#line 2896 "mrbgems/mruby-compiler/core/parse.y"
+#line 2897 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, 0);
                       (yyval.nd) = list3(0, nint(-1), 0);
                     }
-#line 8218 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8219 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 357:
-#line 2901 "mrbgems/mruby-compiler/core/parse.y"
+#line 2902 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, 0);
                     }
-#line 8226 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8227 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 358:
-#line 2905 "mrbgems/mruby-compiler/core/parse.y"
+#line 2906 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, nint(-1), (yyvsp[0].nd));
                     }
-#line 8234 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8235 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 359:
-#line 2911 "mrbgems/mruby-compiler/core/parse.y"
+#line 2912 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-3].nd), (yyvsp[-1].nd), (yyvsp[0].id));
                     }
-#line 8242 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8243 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 360:
-#line 2915 "mrbgems/mruby-compiler/core/parse.y"
+#line 2916 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-1].nd), 0, (yyvsp[0].id));
                     }
-#line 8250 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8251 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 361:
-#line 2919 "mrbgems/mruby-compiler/core/parse.y"
+#line 2920 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, (yyvsp[-1].nd), (yyvsp[0].id));
                     }
-#line 8258 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8259 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 362:
-#line 2923 "mrbgems/mruby-compiler/core/parse.y"
+#line 2924 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, (yyvsp[0].id));
                     }
-#line 8266 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8267 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 363:
-#line 2929 "mrbgems/mruby-compiler/core/parse.y"
+#line 2930 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8274 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8275 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 364:
-#line 2933 "mrbgems/mruby-compiler/core/parse.y"
+#line 2934 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, 0);
                     }
-#line 8282 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8283 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 365:
-#line 2939 "mrbgems/mruby-compiler/core/parse.y"
+#line 2940 "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 8290 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8291 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 366:
-#line 2943 "mrbgems/mruby-compiler/core/parse.y"
+#line 2944 "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 8298 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8299 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 367:
-#line 2947 "mrbgems/mruby-compiler/core/parse.y"
+#line 2948 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 8306 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8307 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 368:
-#line 2951 "mrbgems/mruby-compiler/core/parse.y"
+#line 2952 "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 8314 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8315 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 369:
-#line 2955 "mrbgems/mruby-compiler/core/parse.y"
+#line 2956 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 8322 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8323 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 370:
-#line 2959 "mrbgems/mruby-compiler/core/parse.y"
+#line 2960 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-2].nd), 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 8330 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8331 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 371:
-#line 2963 "mrbgems/mruby-compiler/core/parse.y"
+#line 2964 "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 8338 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8339 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 372:
-#line 2967 "mrbgems/mruby-compiler/core/parse.y"
+#line 2968 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-1].nd), 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 8346 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8347 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 373:
-#line 2971 "mrbgems/mruby-compiler/core/parse.y"
+#line 2972 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 8354 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8355 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 374:
-#line 2975 "mrbgems/mruby-compiler/core/parse.y"
+#line 2976 "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 8362 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8363 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 375:
-#line 2979 "mrbgems/mruby-compiler/core/parse.y"
+#line 2980 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 8370 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8371 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 376:
-#line 2983 "mrbgems/mruby-compiler/core/parse.y"
+#line 2984 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 8378 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8379 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 377:
-#line 2987 "mrbgems/mruby-compiler/core/parse.y"
+#line 2988 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 8386 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8387 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 378:
-#line 2991 "mrbgems/mruby-compiler/core/parse.y"
+#line 2992 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 8394 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8395 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 379:
-#line 2995 "mrbgems/mruby-compiler/core/parse.y"
+#line 2996 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 8402 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8403 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 380:
-#line 3001 "mrbgems/mruby-compiler/core/parse.y"
+#line 3002 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_blk(p, 0);
                       (yyval.nd) = 0;
                     }
-#line 8411 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8412 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 381:
-#line 3006 "mrbgems/mruby-compiler/core/parse.y"
+#line 3007 "mrbgems/mruby-compiler/core/parse.y"
                    {
                       p->cmd_start = TRUE;
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8420 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8421 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 382:
-#line 3012 "mrbgems/mruby-compiler/core/parse.y"
+#line 3013 "mrbgems/mruby-compiler/core/parse.y"
                       {local_add_blk(p, 0);}
-#line 8426 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8427 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 383:
-#line 3013 "mrbgems/mruby-compiler/core/parse.y"
+#line 3014 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 8434 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8435 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 384:
-#line 3017 "mrbgems/mruby-compiler/core/parse.y"
+#line 3018 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_blk(p, 0);
                       (yyval.nd) = 0;
                     }
-#line 8443 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8444 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 385:
-#line 3022 "mrbgems/mruby-compiler/core/parse.y"
+#line 3023 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-2].nd);
                     }
-#line 8451 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8452 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 386:
-#line 3029 "mrbgems/mruby-compiler/core/parse.y"
+#line 3030 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 8459 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8460 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 387:
-#line 3033 "mrbgems/mruby-compiler/core/parse.y"
+#line 3034 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 8467 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8468 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 390:
-#line 3043 "mrbgems/mruby-compiler/core/parse.y"
+#line 3044 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[0].id));
                       new_bv(p, (yyvsp[0].id));
                     }
-#line 8476 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8477 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 392:
-#line 3051 "mrbgems/mruby-compiler/core/parse.y"
+#line 3052 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-2].nd);
                     }
-#line 8484 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8485 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 393:
-#line 3055 "mrbgems/mruby-compiler/core/parse.y"
+#line 3056 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8492 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8493 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 394:
-#line 3061 "mrbgems/mruby-compiler/core/parse.y"
+#line 3062 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 8500 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8501 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 395:
-#line 3065 "mrbgems/mruby-compiler/core/parse.y"
+#line 3066 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 8508 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8509 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 396:
-#line 3071 "mrbgems/mruby-compiler/core/parse.y"
+#line 3072 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                     }
-#line 8517 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8518 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 397:
-#line 3078 "mrbgems/mruby-compiler/core/parse.y"
+#line 3079 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block(p,(yyvsp[-2].nd),(yyvsp[-1].nd));
                       local_unnest(p);
                       nvars_unnest(p);
                     }
-#line 8527 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8528 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 398:
-#line 3086 "mrbgems/mruby-compiler/core/parse.y"
+#line 3087 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (typen((yyvsp[-1].nd)->car) == NODE_YIELD) {
                         yyerror(p, "block given to yield");
@@ -8537,159 +8538,159 @@ yyreduce:
                       }
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 8541 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8542 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 399:
-#line 3096 "mrbgems/mruby-compiler/core/parse.y"
+#line 3097 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 8549 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8550 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 400:
-#line 3100 "mrbgems/mruby-compiler/core/parse.y"
+#line 3101 "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 8558 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8559 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 401:
-#line 3105 "mrbgems/mruby-compiler/core/parse.y"
+#line 3106 "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 8567 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8568 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 402:
-#line 3112 "mrbgems/mruby-compiler/core/parse.y"
+#line 3113 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 8575 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8576 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 403:
-#line 3116 "mrbgems/mruby-compiler/core/parse.y"
+#line 3117 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 8583 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8584 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 404:
-#line 3120 "mrbgems/mruby-compiler/core/parse.y"
+#line 3121 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), tCOLON2);
                     }
-#line 8591 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8592 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 405:
-#line 3124 "mrbgems/mruby-compiler/core/parse.y"
+#line 3125 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, tCOLON2);
                     }
-#line 8599 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8600 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 406:
-#line 3128 "mrbgems/mruby-compiler/core/parse.y"
+#line 3129 "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 8607 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8608 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 407:
-#line 3132 "mrbgems/mruby-compiler/core/parse.y"
+#line 3133 "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 8615 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8616 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 408:
-#line 3136 "mrbgems/mruby-compiler/core/parse.y"
+#line 3137 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_super(p, (yyvsp[0].nd));
                     }
-#line 8623 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8624 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 409:
-#line 3140 "mrbgems/mruby-compiler/core/parse.y"
+#line 3141 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_zsuper(p);
                     }
-#line 8631 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8632 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 410:
-#line 3144 "mrbgems/mruby-compiler/core/parse.y"
+#line 3145 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), intern_op(aref), (yyvsp[-1].nd), '.');
                     }
-#line 8639 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8640 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 411:
-#line 3150 "mrbgems/mruby-compiler/core/parse.y"
+#line 3151 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                       (yyval.num) = p->lineno;
                     }
-#line 8649 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8650 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 412:
-#line 3157 "mrbgems/mruby-compiler/core/parse.y"
+#line 3158 "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 8660 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8661 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 413:
-#line 3164 "mrbgems/mruby-compiler/core/parse.y"
+#line 3165 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                       (yyval.num) = p->lineno;
                     }
-#line 8670 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8671 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 414:
-#line 3171 "mrbgems/mruby-compiler/core/parse.y"
+#line 3172 "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 8681 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8682 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 415:
-#line 3182 "mrbgems/mruby-compiler/core/parse.y"
+#line 3183 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(cons((yyvsp[-3].nd), (yyvsp[-1].nd)), (yyvsp[0].nd));
                     }
-#line 8689 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8690 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 416:
-#line 3188 "mrbgems/mruby-compiler/core/parse.y"
+#line 3189 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[0].nd)) {
                         (yyval.nd) = cons(cons(0, (yyvsp[0].nd)), 0);
@@ -8698,383 +8699,383 @@ yyreduce:
                         (yyval.nd) = 0;
                       }
                     }
-#line 8702 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8703 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 418:
-#line 3202 "mrbgems/mruby-compiler/core/parse.y"
+#line 3203 "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 8711 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8712 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 420:
-#line 3210 "mrbgems/mruby-compiler/core/parse.y"
+#line 3211 "mrbgems/mruby-compiler/core/parse.y"
                     {
                         (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 8719 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8720 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 423:
-#line 3218 "mrbgems/mruby-compiler/core/parse.y"
+#line 3219 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8727 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8728 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 425:
-#line 3225 "mrbgems/mruby-compiler/core/parse.y"
+#line 3226 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8735 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8736 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 432:
-#line 3239 "mrbgems/mruby-compiler/core/parse.y"
+#line 3240 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = concat_string(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 8743 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8744 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 435:
-#line 3247 "mrbgems/mruby-compiler/core/parse.y"
+#line 3248 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8751 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8752 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 436:
-#line 3251 "mrbgems/mruby-compiler/core/parse.y"
+#line 3252 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dstr(p, push((yyvsp[-1].nd), (yyvsp[0].nd)));
                     }
-#line 8759 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8760 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 438:
-#line 3258 "mrbgems/mruby-compiler/core/parse.y"
+#line 3259 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = append((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 8767 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8768 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 439:
-#line 3264 "mrbgems/mruby-compiler/core/parse.y"
+#line 3265 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 8775 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8776 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 440:
-#line 3268 "mrbgems/mruby-compiler/core/parse.y"
+#line 3269 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = p->lex_strterm;
                       p->lex_strterm = NULL;
                     }
-#line 8784 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8785 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 441:
-#line 3274 "mrbgems/mruby-compiler/core/parse.y"
+#line 3275 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lex_strterm = (yyvsp[-2].nd);
                       (yyval.nd) = list2((yyvsp[-3].nd), (yyvsp[-1].nd));
                     }
-#line 8793 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8794 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 442:
-#line 3279 "mrbgems/mruby-compiler/core/parse.y"
+#line 3280 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_literal_delim(p));
                     }
-#line 8801 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8802 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 443:
-#line 3283 "mrbgems/mruby-compiler/core/parse.y"
+#line 3284 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_literal_delim(p));
                     }
-#line 8809 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8810 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 444:
-#line 3289 "mrbgems/mruby-compiler/core/parse.y"
+#line 3290 "mrbgems/mruby-compiler/core/parse.y"
                     {
                         (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8817 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8818 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 445:
-#line 3293 "mrbgems/mruby-compiler/core/parse.y"
+#line 3294 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dxstr(p, push((yyvsp[-1].nd), (yyvsp[0].nd)));
                     }
-#line 8825 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8826 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 446:
-#line 3299 "mrbgems/mruby-compiler/core/parse.y"
+#line 3300 "mrbgems/mruby-compiler/core/parse.y"
                     {
                         (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8833 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8834 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 447:
-#line 3303 "mrbgems/mruby-compiler/core/parse.y"
+#line 3304 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dregx(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 8841 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8842 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 451:
-#line 3316 "mrbgems/mruby-compiler/core/parse.y"
+#line 3317 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       parser_heredoc_info * inf = parsing_heredoc_inf(p);
                       inf->doc = push(inf->doc, new_str(p, "", 0));
                       heredoc_end(p);
                     }
-#line 8851 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8852 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 452:
-#line 3322 "mrbgems/mruby-compiler/core/parse.y"
+#line 3323 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       heredoc_end(p);
                     }
-#line 8859 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8860 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 455:
-#line 3332 "mrbgems/mruby-compiler/core/parse.y"
+#line 3333 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       parser_heredoc_info * inf = parsing_heredoc_inf(p);
                       inf->doc = push(inf->doc, (yyvsp[0].nd));
                       heredoc_treat_nextline(p);
                     }
-#line 8869 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8870 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 456:
-#line 3338 "mrbgems/mruby-compiler/core/parse.y"
+#line 3339 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = p->lex_strterm;
                       p->lex_strterm = NULL;
                     }
-#line 8878 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8879 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 457:
-#line 3344 "mrbgems/mruby-compiler/core/parse.y"
+#line 3345 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       parser_heredoc_info * inf = parsing_heredoc_inf(p);
                       p->lex_strterm = (yyvsp[-2].nd);
                       inf->doc = push(push(inf->doc, (yyvsp[-3].nd)), (yyvsp[-1].nd));
                     }
-#line 8888 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8889 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 458:
-#line 3352 "mrbgems/mruby-compiler/core/parse.y"
+#line 3353 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_words(p, list1((yyvsp[0].nd)));
                     }
-#line 8896 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8897 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 459:
-#line 3356 "mrbgems/mruby-compiler/core/parse.y"
+#line 3357 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_words(p, push((yyvsp[-1].nd), (yyvsp[0].nd)));
                     }
-#line 8904 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8905 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 460:
-#line 3363 "mrbgems/mruby-compiler/core/parse.y"
+#line 3364 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_ENDARG;
                       (yyval.nd) = new_sym(p, (yyvsp[0].id));
                     }
-#line 8913 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8914 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 461:
-#line 3368 "mrbgems/mruby-compiler/core/parse.y"
+#line 3369 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_ENDARG;
                       (yyval.nd) = new_dsym(p, new_dstr(p, push((yyvsp[-1].nd), (yyvsp[0].nd))));
                     }
-#line 8922 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8923 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 462:
-#line 3375 "mrbgems/mruby-compiler/core/parse.y"
+#line 3376 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 8930 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8931 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 467:
-#line 3385 "mrbgems/mruby-compiler/core/parse.y"
+#line 3386 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = new_strsym(p, (yyvsp[0].nd));
                     }
-#line 8938 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8939 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 468:
-#line 3389 "mrbgems/mruby-compiler/core/parse.y"
+#line 3390 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = new_strsym(p, (yyvsp[0].nd));
                     }
-#line 8946 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8947 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 469:
-#line 3395 "mrbgems/mruby-compiler/core/parse.y"
+#line 3396 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_symbols(p, list1((yyvsp[0].nd)));
                     }
-#line 8954 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8955 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 470:
-#line 3399 "mrbgems/mruby-compiler/core/parse.y"
+#line 3400 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_symbols(p, push((yyvsp[-1].nd), (yyvsp[0].nd)));
                     }
-#line 8962 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8963 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 473:
-#line 3407 "mrbgems/mruby-compiler/core/parse.y"
+#line 3408 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = negate_lit(p, (yyvsp[0].nd));
                     }
-#line 8970 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8971 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 474:
-#line 3411 "mrbgems/mruby-compiler/core/parse.y"
+#line 3412 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = negate_lit(p, (yyvsp[0].nd));
                     }
-#line 8978 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8979 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 475:
-#line 3417 "mrbgems/mruby-compiler/core/parse.y"
+#line 3418 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_lvar(p, (yyvsp[0].id));
                     }
-#line 8986 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8987 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 476:
-#line 3421 "mrbgems/mruby-compiler/core/parse.y"
+#line 3422 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_ivar(p, (yyvsp[0].id));
                     }
-#line 8994 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8995 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 477:
-#line 3425 "mrbgems/mruby-compiler/core/parse.y"
+#line 3426 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_gvar(p, (yyvsp[0].id));
                     }
-#line 9002 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9003 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 478:
-#line 3429 "mrbgems/mruby-compiler/core/parse.y"
+#line 3430 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_cvar(p, (yyvsp[0].id));
                     }
-#line 9010 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9011 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 479:
-#line 3433 "mrbgems/mruby-compiler/core/parse.y"
+#line 3434 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_const(p, (yyvsp[0].id));
                     }
-#line 9018 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9019 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 480:
-#line 3439 "mrbgems/mruby-compiler/core/parse.y"
+#line 3440 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       assignable(p, (yyvsp[0].nd));
                     }
-#line 9026 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9027 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 481:
-#line 3443 "mrbgems/mruby-compiler/core/parse.y"
+#line 3444 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "can't assign to numbered parameter");
                     }
-#line 9034 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9035 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 482:
-#line 3449 "mrbgems/mruby-compiler/core/parse.y"
+#line 3450 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = var_reference(p, (yyvsp[0].nd));
                     }
-#line 9042 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9043 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 483:
-#line 3453 "mrbgems/mruby-compiler/core/parse.y"
+#line 3454 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_nil(p);
                     }
-#line 9050 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9051 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 484:
-#line 3457 "mrbgems/mruby-compiler/core/parse.y"
+#line 3458 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_self(p);
                     }
-#line 9058 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9059 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 485:
-#line 3461 "mrbgems/mruby-compiler/core/parse.y"
+#line 3462 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_true(p);
                     }
-#line 9066 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9067 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 486:
-#line 3465 "mrbgems/mruby-compiler/core/parse.y"
+#line 3466 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_false(p);
                     }
-#line 9074 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9075 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 487:
-#line 3469 "mrbgems/mruby-compiler/core/parse.y"
+#line 3470 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       const char *fn = mrb_sym_name_len(p->mrb, p->filename_sym, NULL);
                       if (!fn) {
@@ -9082,22 +9083,22 @@ yyreduce:
                       }
                       (yyval.nd) = new_str(p, fn, strlen(fn));
                     }
-#line 9086 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9087 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 488:
-#line 3477 "mrbgems/mruby-compiler/core/parse.y"
+#line 3478 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       char buf[16];
 
                       dump_int(p->lineno, buf);
                       (yyval.nd) = new_int(p, buf, 10, 0);
                     }
-#line 9097 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9098 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 489:
-#line 3484 "mrbgems/mruby-compiler/core/parse.y"
+#line 3485 "mrbgems/mruby-compiler/core/parse.y"
                     {
 #ifdef MRB_UTF8_STRING
                       const char *enc = "UTF-8";
@@ -9106,46 +9107,46 @@ yyreduce:
 #endif
                       (yyval.nd) = new_str(p, enc, strlen(enc));
                     }
-#line 9110 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9111 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 492:
-#line 3499 "mrbgems/mruby-compiler/core/parse.y"
+#line 3500 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 9118 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9119 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 493:
-#line 3503 "mrbgems/mruby-compiler/core/parse.y"
+#line 3504 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_BEG;
                       p->cmd_start = TRUE;
                     }
-#line 9127 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9128 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 494:
-#line 3508 "mrbgems/mruby-compiler/core/parse.y"
+#line 3509 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9135 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9136 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 495:
-#line 3519 "mrbgems/mruby-compiler/core/parse.y"
+#line 3520 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                       p->lstate = EXPR_BEG;
                       p->cmd_start = TRUE;
                     }
-#line 9145 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9146 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 496:
-#line 3525 "mrbgems/mruby-compiler/core/parse.y"
+#line 3526 "mrbgems/mruby-compiler/core/parse.y"
                     {
 #if 1
                       /* til real keyword args implemented */
@@ -9163,11 +9164,11 @@ yyreduce:
                                     new_args_tail(p, 0, new_kw_rest_args(p, nsym(k)), b));
 #endif
                     }
-#line 9167 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9168 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 497:
-#line 3543 "mrbgems/mruby-compiler/core/parse.y"
+#line 3544 "mrbgems/mruby-compiler/core/parse.y"
                     {
 #if 1
                       /* til real keyword args implemented */
@@ -9185,504 +9186,504 @@ yyreduce:
                                     new_args_tail(p, 0, new_kw_rest_args(p, nsym(k)), b));
 #endif
                     }
-#line 9189 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9190 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 499:
-#line 3564 "mrbgems/mruby-compiler/core/parse.y"
+#line 3565 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9197 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9198 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 500:
-#line 3570 "mrbgems/mruby-compiler/core/parse.y"
+#line 3571 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                     }
-#line 9205 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9206 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 501:
-#line 3576 "mrbgems/mruby-compiler/core/parse.y"
+#line 3577 "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 9215 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9216 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 502:
-#line 3582 "mrbgems/mruby-compiler/core/parse.y"
+#line 3583 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_kw_arg(p, (yyvsp[0].id), 0);
                       local_unnest(p);
                     }
-#line 9224 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9225 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 503:
-#line 3589 "mrbgems/mruby-compiler/core/parse.y"
+#line 3590 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_kw_arg(p, (yyvsp[-1].id), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 9233 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9234 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 504:
-#line 3594 "mrbgems/mruby-compiler/core/parse.y"
+#line 3595 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_kw_arg(p, (yyvsp[0].id), 0);
                       local_unnest(p);
                     }
-#line 9242 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9243 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 505:
-#line 3601 "mrbgems/mruby-compiler/core/parse.y"
+#line 3602 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 9250 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9251 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 506:
-#line 3605 "mrbgems/mruby-compiler/core/parse.y"
+#line 3606 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 9258 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9259 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 507:
-#line 3611 "mrbgems/mruby-compiler/core/parse.y"
+#line 3612 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 9266 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9267 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 508:
-#line 3615 "mrbgems/mruby-compiler/core/parse.y"
+#line 3616 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 9274 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9275 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 511:
-#line 3625 "mrbgems/mruby-compiler/core/parse.y"
+#line 3626 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_kw_rest_args(p, nsym((yyvsp[0].id)));
                     }
-#line 9282 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9283 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 512:
-#line 3629 "mrbgems/mruby-compiler/core/parse.y"
+#line 3630 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_kw_rest_args(p, 0);
                     }
-#line 9290 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9291 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 513:
-#line 3635 "mrbgems/mruby-compiler/core/parse.y"
+#line 3636 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-3].nd), (yyvsp[-1].nd), (yyvsp[0].id));
                     }
-#line 9298 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9299 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 514:
-#line 3639 "mrbgems/mruby-compiler/core/parse.y"
+#line 3640 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-1].nd), 0, (yyvsp[0].id));
                     }
-#line 9306 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9307 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 515:
-#line 3643 "mrbgems/mruby-compiler/core/parse.y"
+#line 3644 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, (yyvsp[-1].nd), (yyvsp[0].id));
                     }
-#line 9314 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9315 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 516:
-#line 3647 "mrbgems/mruby-compiler/core/parse.y"
+#line 3648 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, (yyvsp[0].id));
                     }
-#line 9322 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9323 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 517:
-#line 3653 "mrbgems/mruby-compiler/core/parse.y"
+#line 3654 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9330 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9331 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 518:
-#line 3657 "mrbgems/mruby-compiler/core/parse.y"
+#line 3658 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, 0);
                     }
-#line 9338 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9339 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 519:
-#line 3663 "mrbgems/mruby-compiler/core/parse.y"
+#line 3664 "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 9346 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9347 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 520:
-#line 3667 "mrbgems/mruby-compiler/core/parse.y"
+#line 3668 "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 9354 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9355 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 521:
-#line 3671 "mrbgems/mruby-compiler/core/parse.y"
+#line 3672 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 9362 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9363 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 522:
-#line 3675 "mrbgems/mruby-compiler/core/parse.y"
+#line 3676 "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 9370 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9371 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 523:
-#line 3679 "mrbgems/mruby-compiler/core/parse.y"
+#line 3680 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9378 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9379 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 524:
-#line 3683 "mrbgems/mruby-compiler/core/parse.y"
+#line 3684 "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 9386 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9387 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 525:
-#line 3687 "mrbgems/mruby-compiler/core/parse.y"
+#line 3688 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-1].nd), 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 9394 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9395 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 526:
-#line 3691 "mrbgems/mruby-compiler/core/parse.y"
+#line 3692 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9402 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9403 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 527:
-#line 3695 "mrbgems/mruby-compiler/core/parse.y"
+#line 3696 "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 9410 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9411 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 528:
-#line 3699 "mrbgems/mruby-compiler/core/parse.y"
+#line 3700 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 9418 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9419 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 529:
-#line 3703 "mrbgems/mruby-compiler/core/parse.y"
+#line 3704 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9426 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9427 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 530:
-#line 3707 "mrbgems/mruby-compiler/core/parse.y"
+#line 3708 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9434 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9435 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 531:
-#line 3711 "mrbgems/mruby-compiler/core/parse.y"
+#line 3712 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9442 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9443 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 532:
-#line 3715 "mrbgems/mruby-compiler/core/parse.y"
+#line 3716 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 9450 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9451 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 533:
-#line 3719 "mrbgems/mruby-compiler/core/parse.y"
+#line 3720 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, intern_op(and));
                       (yyval.nd) = new_args(p, 0, 0, 0, 0, 0);
                     }
-#line 9459 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9460 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 534:
-#line 3726 "mrbgems/mruby-compiler/core/parse.y"
+#line 3727 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "formal argument cannot be a constant");
                       (yyval.nd) = 0;
                     }
-#line 9468 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9469 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 535:
-#line 3731 "mrbgems/mruby-compiler/core/parse.y"
+#line 3732 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "formal argument cannot be an instance variable");
                       (yyval.nd) = 0;
                     }
-#line 9477 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9478 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 536:
-#line 3736 "mrbgems/mruby-compiler/core/parse.y"
+#line 3737 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "formal argument cannot be a global variable");
                       (yyval.nd) = 0;
                     }
-#line 9486 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9487 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 537:
-#line 3741 "mrbgems/mruby-compiler/core/parse.y"
+#line 3742 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "formal argument cannot be a class variable");
                       (yyval.nd) = 0;
                     }
-#line 9495 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9496 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 538:
-#line 3746 "mrbgems/mruby-compiler/core/parse.y"
+#line 3747 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(p, "formal argument cannot be a numbered parameter");
                       (yyval.nd) = 0;
                     }
-#line 9504 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9505 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 539:
-#line 3753 "mrbgems/mruby-compiler/core/parse.y"
+#line 3754 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = 0;
                     }
-#line 9512 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9513 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 540:
-#line 3757 "mrbgems/mruby-compiler/core/parse.y"
+#line 3758 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[0].id));
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 9521 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9522 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 541:
-#line 3764 "mrbgems/mruby-compiler/core/parse.y"
+#line 3765 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_arg(p, (yyvsp[0].id));
                     }
-#line 9529 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9530 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 542:
-#line 3768 "mrbgems/mruby-compiler/core/parse.y"
+#line 3769 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = local_switch(p);
                     }
-#line 9537 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9538 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 543:
-#line 3772 "mrbgems/mruby-compiler/core/parse.y"
+#line 3773 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn_param(p, (yyvsp[-1].nd), p->locals->car);
                       local_resume(p, (yyvsp[-2].nd));
                       local_add_f(p, 0);
                     }
-#line 9547 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9548 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 544:
-#line 3780 "mrbgems/mruby-compiler/core/parse.y"
+#line 3781 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 9555 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9556 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 545:
-#line 3784 "mrbgems/mruby-compiler/core/parse.y"
+#line 3785 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 9563 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9564 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 546:
-#line 3790 "mrbgems/mruby-compiler/core/parse.y"
+#line 3791 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[-1].id));
                       local_nest(p);
                       (yyval.id) = (yyvsp[-1].id);
                     }
-#line 9573 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9574 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 547:
-#line 3798 "mrbgems/mruby-compiler/core/parse.y"
+#line 3799 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(nsym((yyvsp[-1].id)), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 9583 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9584 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 548:
-#line 3806 "mrbgems/mruby-compiler/core/parse.y"
+#line 3807 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(nsym((yyvsp[-1].id)), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 9593 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9594 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 549:
-#line 3814 "mrbgems/mruby-compiler/core/parse.y"
+#line 3815 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 9601 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9602 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 550:
-#line 3818 "mrbgems/mruby-compiler/core/parse.y"
+#line 3819 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 9609 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9610 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 551:
-#line 3824 "mrbgems/mruby-compiler/core/parse.y"
+#line 3825 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 9617 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9618 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 552:
-#line 3828 "mrbgems/mruby-compiler/core/parse.y"
+#line 3829 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 9625 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9626 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 555:
-#line 3838 "mrbgems/mruby-compiler/core/parse.y"
+#line 3839 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[0].id));
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 9634 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9635 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 556:
-#line 3843 "mrbgems/mruby-compiler/core/parse.y"
+#line 3844 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, intern_op(mul));
                       (yyval.id) = -1;
                     }
-#line 9643 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9644 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 559:
-#line 3854 "mrbgems/mruby-compiler/core/parse.y"
+#line 3855 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 9651 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9652 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 560:
-#line 3860 "mrbgems/mruby-compiler/core/parse.y"
+#line 3861 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 9659 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9660 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 561:
-#line 3864 "mrbgems/mruby-compiler/core/parse.y"
+#line 3865 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = 0;
                     }
-#line 9667 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9668 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 562:
-#line 3870 "mrbgems/mruby-compiler/core/parse.y"
+#line 3871 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                       if (!(yyval.nd)) (yyval.nd) = new_nil(p);
                     }
-#line 9676 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9677 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 563:
-#line 3874 "mrbgems/mruby-compiler/core/parse.y"
+#line 3875 "mrbgems/mruby-compiler/core/parse.y"
                       {p->lstate = EXPR_BEG;}
-#line 9682 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9683 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 564:
-#line 3875 "mrbgems/mruby-compiler/core/parse.y"
+#line 3876 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[-1].nd) == 0) {
                         yyerror(p, "can't define singleton method for ().");
@@ -9705,55 +9706,55 @@ yyreduce:
                       }
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9709 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9710 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 566:
-#line 3901 "mrbgems/mruby-compiler/core/parse.y"
+#line 3902 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9717 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9718 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 567:
-#line 3907 "mrbgems/mruby-compiler/core/parse.y"
+#line 3908 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                       NODE_LINENO((yyval.nd), (yyvsp[0].nd));
                     }
-#line 9726 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9727 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 568:
-#line 3912 "mrbgems/mruby-compiler/core/parse.y"
+#line 3913 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 9734 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9735 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 571:
-#line 3922 "mrbgems/mruby-compiler/core/parse.y"
+#line 3923 "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 9744 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9745 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 572:
-#line 3928 "mrbgems/mruby-compiler/core/parse.y"
+#line 3929 "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 9753 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9754 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 573:
-#line 3933 "mrbgems/mruby-compiler/core/parse.y"
+#line 3934 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       if (typen((yyvsp[-2].nd)->car) == NODE_DSTR) {
@@ -9763,67 +9764,67 @@ yyreduce:
                         (yyval.nd) = cons(new_sym(p, new_strsym(p, (yyvsp[-2].nd))), (yyvsp[0].nd));
                       }
                     }
-#line 9767 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9768 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 574:
-#line 3943 "mrbgems/mruby-compiler/core/parse.y"
+#line 3944 "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 9776 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9777 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 587:
-#line 3970 "mrbgems/mruby-compiler/core/parse.y"
+#line 3971 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = '.';
                     }
-#line 9784 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9785 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 588:
-#line 3974 "mrbgems/mruby-compiler/core/parse.y"
+#line 3975 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = 0;
                     }
-#line 9792 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9793 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 590:
-#line 3981 "mrbgems/mruby-compiler/core/parse.y"
+#line 3982 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = tCOLON2;
                     }
-#line 9800 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9801 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 599:
-#line 4002 "mrbgems/mruby-compiler/core/parse.y"
+#line 4003 "mrbgems/mruby-compiler/core/parse.y"
                       {yyerrok;}
-#line 9806 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9807 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 602:
-#line 4008 "mrbgems/mruby-compiler/core/parse.y"
+#line 4009 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lineno += (yyvsp[0].num);
                       p->column = 0;
                     }
-#line 9815 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9816 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 605:
-#line 4019 "mrbgems/mruby-compiler/core/parse.y"
+#line 4020 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 9823 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9824 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
 
-#line 9827 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9828 "mrbgems/mruby-compiler/core/y.tab.c"
 
       default: break;
     }
@@ -10055,7 +10056,7 @@ yyreturn:
 #endif
   return yyresult;
 }
-#line 4023 "mrbgems/mruby-compiler/core/parse.y"
+#line 4024 "mrbgems/mruby-compiler/core/parse.y"
 
 #define pylval  (*((YYSTYPE*)(p->ylval)))
 
diff --git a/mrbgems/mruby-complex/src/complex.c b/mrbgems/mruby-complex/src/complex.c
index 6b7486ab0..5305e09d8 100644
--- a/mrbgems/mruby-complex/src/complex.c
+++ b/mrbgems/mruby-complex/src/complex.c
@@ -1,6 +1,7 @@
 #include <mruby.h>
 #include <mruby/class.h>
 #include <mruby/numeric.h>
+#include <mruby/presym.h>
 #include <math.h>
 
 #ifdef MRB_NO_FLOAT
diff --git a/mrbgems/mruby-eval/src/eval.c b/mrbgems/mruby-eval/src/eval.c
index 368c7892b..08ef8d937 100644
--- a/mrbgems/mruby-eval/src/eval.c
+++ b/mrbgems/mruby-eval/src/eval.c
@@ -5,6 +5,7 @@
 #include <mruby/proc.h>
 #include <mruby/opcode.h>
 #include <mruby/error.h>
+#include <mruby/presym.h>
 
 struct REnv *mrb_env_new(mrb_state *mrb, struct mrb_context *c, mrb_callinfo *ci, int nstacks, mrb_value *stack, struct RClass *tc);
 mrb_value mrb_exec_irep(mrb_state *mrb, mrb_value self, struct RProc *p);
diff --git a/mrbgems/mruby-io/src/file.c b/mrbgems/mruby-io/src/file.c
index 58f4bcc6f..8e7d64958 100644
--- a/mrbgems/mruby-io/src/file.c
+++ b/mrbgems/mruby-io/src/file.c
@@ -8,6 +8,7 @@
 #include "mruby/string.h"
 #include "mruby/ext/io.h"
 #include "mruby/error.h"
+#include "mruby/presym.h"
 
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/mrbgems/mruby-io/src/io.c b/mrbgems/mruby-io/src/io.c
index 31ea572a4..b9d136a5a 100644
--- a/mrbgems/mruby-io/src/io.c
+++ b/mrbgems/mruby-io/src/io.c
@@ -11,6 +11,7 @@
 #include "mruby/variable.h"
 #include "mruby/ext/io.h"
 #include "mruby/error.h"
+#include "mruby/presym.h"
 
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/mrbgems/mruby-kernel-ext/src/kernel.c b/mrbgems/mruby-kernel-ext/src/kernel.c
index 687975bf4..2a0ca3a9d 100644
--- a/mrbgems/mruby-kernel-ext/src/kernel.c
+++ b/mrbgems/mruby-kernel-ext/src/kernel.c
@@ -3,6 +3,7 @@
 #include <mruby/array.h>
 #include <mruby/hash.h>
 #include <mruby/range.h>
+#include <mruby/presym.h>
 
 static mrb_value
 mrb_f_caller(mrb_state *mrb, mrb_value self)
diff --git a/mrbgems/mruby-math/src/math.c b/mrbgems/mruby-math/src/math.c
index 3a593b7cf..0b85b1763 100644
--- a/mrbgems/mruby-math/src/math.c
+++ b/mrbgems/mruby-math/src/math.c
@@ -11,6 +11,7 @@
 #endif
 
 #include <mruby/array.h>
+#include <mruby/presym.h>
 #include <math.h>
 
 static void
diff --git a/mrbgems/mruby-metaprog/src/metaprog.c b/mrbgems/mruby-metaprog/src/metaprog.c
index 8afd85c86..f0f544334 100644
--- a/mrbgems/mruby-metaprog/src/metaprog.c
+++ b/mrbgems/mruby-metaprog/src/metaprog.c
@@ -5,6 +5,7 @@
 #include "mruby/proc.h"
 #include "mruby/class.h"
 #include "mruby/string.h"
+#include "mruby/presym.h"
 
 typedef enum {
   NOEX_PUBLIC    = 0x00,
diff --git a/mrbgems/mruby-method/src/method.c b/mrbgems/mruby-method/src/method.c
index 7699693fd..5d3a6c46a 100644
--- a/mrbgems/mruby-method/src/method.c
+++ b/mrbgems/mruby-method/src/method.c
@@ -4,6 +4,7 @@
 #include "mruby/variable.h"
 #include "mruby/proc.h"
 #include "mruby/string.h"
+#include "mruby/presym.h"
 
 static struct RObject *
 method_object_alloc(mrb_state *mrb, struct RClass *mclass)
diff --git a/mrbgems/mruby-numeric-ext/src/numeric_ext.c b/mrbgems/mruby-numeric-ext/src/numeric_ext.c
index e5ec90866..dbc7f39d9 100644
--- a/mrbgems/mruby-numeric-ext/src/numeric_ext.c
+++ b/mrbgems/mruby-numeric-ext/src/numeric_ext.c
@@ -1,6 +1,7 @@
 #include <limits.h>
 #include <mruby.h>
 #include <mruby/numeric.h>
+#include <mruby/presym.h>
 
 /*
  *  call-seq:
diff --git a/mrbgems/mruby-object-ext/src/object.c b/mrbgems/mruby-object-ext/src/object.c
index b636c9823..a65feea6d 100644
--- a/mrbgems/mruby-object-ext/src/object.c
+++ b/mrbgems/mruby-object-ext/src/object.c
@@ -3,6 +3,7 @@
 #include <mruby/class.h>
 #include <mruby/hash.h>
 #include <mruby/proc.h>
+#include <mruby/presym.h>
 
 /*
  *  call-seq:
diff --git a/mrbgems/mruby-objectspace/src/mruby_objectspace.c b/mrbgems/mruby-objectspace/src/mruby_objectspace.c
index d8013c20f..76c804fbb 100644
--- a/mrbgems/mruby-objectspace/src/mruby_objectspace.c
+++ b/mrbgems/mruby-objectspace/src/mruby_objectspace.c
@@ -10,6 +10,7 @@
 #include <mruby/proc.h>
 #include <mruby/value.h>
 #include <mruby/range.h>
+#include <mruby/presym.h>
 
 struct os_count_struct {
   mrb_int total;
diff --git a/mrbgems/mruby-proc-ext/src/proc.c b/mrbgems/mruby-proc-ext/src/proc.c
index cb748651d..6117c4d40 100644
--- a/mrbgems/mruby-proc-ext/src/proc.c
+++ b/mrbgems/mruby-proc-ext/src/proc.c
@@ -4,6 +4,7 @@
 #include <mruby/array.h>
 #include <mruby/string.h>
 #include <mruby/debug.h>
+#include <mruby/presym.h>
 
 static mrb_value
 mrb_proc_lambda_p(mrb_state *mrb, mrb_value self)
diff --git a/mrbgems/mruby-random/src/random.c b/mrbgems/mruby-random/src/random.c
index 7ae706c86..0cefb9ed0 100644
--- a/mrbgems/mruby-random/src/random.c
+++ b/mrbgems/mruby-random/src/random.c
@@ -10,6 +10,7 @@
 #include <mruby/data.h>
 #include <mruby/array.h>
 #include <mruby/istruct.h>
+#include <mruby/presym.h>
 
 #include <time.h>
 
diff --git a/mrbgems/mruby-rational/src/rational.c b/mrbgems/mruby-rational/src/rational.c
index c9f3e0d03..931f92d21 100644
--- a/mrbgems/mruby-rational/src/rational.c
+++ b/mrbgems/mruby-rational/src/rational.c
@@ -2,6 +2,7 @@
 #include <mruby/class.h>
 #include <mruby/string.h>
 #include <mruby/numeric.h>
+#include <mruby/presym.h>
 
 struct mrb_rational {
   mrb_int numerator;
diff --git a/mrbgems/mruby-socket/src/socket.c b/mrbgems/mruby-socket/src/socket.c
index c259ac0b1..28418fa12 100644
--- a/mrbgems/mruby-socket/src/socket.c
+++ b/mrbgems/mruby-socket/src/socket.c
@@ -42,6 +42,7 @@
 #include "mruby/string.h"
 #include "mruby/variable.h"
 #include "mruby/error.h"
+#include "mruby/presym.h"
 
 #include "mruby/ext/io.h"
 
diff --git a/mrbgems/mruby-sprintf/src/sprintf.c b/mrbgems/mruby-sprintf/src/sprintf.c
index 411aec295..f6dab159d 100644
--- a/mrbgems/mruby-sprintf/src/sprintf.c
+++ b/mrbgems/mruby-sprintf/src/sprintf.c
@@ -10,6 +10,7 @@
 #include <mruby/string.h>
 #include <mruby/hash.h>
 #include <mruby/numeric.h>
+#include <mruby/presym.h>
 #ifndef MRB_NO_FLOAT
 #include <math.h>
 #endif
diff --git a/mrbgems/mruby-struct/src/struct.c b/mrbgems/mruby-struct/src/struct.c
index c64a494a5..54afefd74 100644
--- a/mrbgems/mruby-struct/src/struct.c
+++ b/mrbgems/mruby-struct/src/struct.c
@@ -13,6 +13,7 @@
 #include <mruby/hash.h>
 #include <mruby/range.h>
 #include <mruby/proc.h>
+#include <mruby/presym.h>
 
 #define RSTRUCT_LEN(st) RARRAY_LEN(st)
 #define RSTRUCT_PTR(st) RARRAY_PTR(st)
diff --git a/mrbgems/mruby-time/src/time.c b/mrbgems/mruby-time/src/time.c
index c749ffc58..702cf2e29 100644
--- a/mrbgems/mruby-time/src/time.c
+++ b/mrbgems/mruby-time/src/time.c
@@ -14,6 +14,7 @@
 #include <mruby/numeric.h>
 #include <mruby/time.h>
 #include <mruby/string.h>
+#include <mruby/presym.h>
 
 #ifdef MRB_NO_STDIO
 #include <string.h>
diff --git a/src/backtrace.c b/src/backtrace.c
index 65404d23a..70c82e2d1 100644
--- a/src/backtrace.c
+++ b/src/backtrace.c
@@ -14,6 +14,7 @@
 #include <mruby/error.h>
 #include <mruby/numeric.h>
 #include <mruby/data.h>
+#include <mruby/presym.h>
 
 struct backtrace_location {
   int32_t lineno;
diff --git a/src/class.c b/src/class.c
index 287d63da3..126ac0004 100644
--- a/src/class.c
+++ b/src/class.c
@@ -17,6 +17,7 @@
 #include <mruby/data.h>
 #include <mruby/istruct.h>
 #include <mruby/opcode.h>
+#include <mruby/presym.h>
 
 union mt_ptr {
   struct RProc *proc;
diff --git a/src/dump.c b/src/dump.c
index d18ffebdc..216701ba8 100644
--- a/src/dump.c
+++ b/src/dump.c
@@ -1216,7 +1216,10 @@ mrb_dump_irep_cstruct(mrb_state *mrb, const mrb_irep *irep, uint8_t flags, FILE
   if (fp == NULL || initname == NULL || initname[0] == '\0') {
     return MRB_DUMP_INVALID_ARGUMENT;
   }
-  if (fprintf(fp, "#include <mruby.h>\n" "#include <mruby/proc.h>\n\n") < 0) {
+  if (fprintf(fp, "#include <mruby.h>\n"
+                  "#include <mruby/proc.h>\n"
+                  "#include <mruby/presym.h>\n"
+                  "\n") < 0) {
     return MRB_DUMP_WRITE_FAULT;
   }
   fputs("#define mrb_BRACED(...) {__VA_ARGS__}\n", fp);
diff --git a/src/error.c b/src/error.c
index 4f7ca8641..d2f1c27ac 100644
--- a/src/error.c
+++ b/src/error.c
@@ -16,6 +16,7 @@
 #include <mruby/error.h>
 #include <mruby/class.h>
 #include <mruby/throw.h>
+#include <mruby/presym.h>
 
 MRB_API mrb_value
 mrb_exc_new(mrb_state *mrb, struct RClass *c, const char *ptr, size_t len)
diff --git a/src/gc.c b/src/gc.c
index 5943a0e3b..98a2237d5 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -22,6 +22,7 @@
 #include <mruby/gc.h>
 #include <mruby/error.h>
 #include <mruby/throw.h>
+#include <mruby/presym.h>
 
 /*
   = Tri-color Incremental Garbage Collection
diff --git a/src/hash.c b/src/hash.c
index 3c9c2f484..289f02a91 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -11,6 +11,7 @@
 #include <mruby/hash.h>
 #include <mruby/string.h>
 #include <mruby/variable.h>
+#include <mruby/presym.h>
 
 /*
  * === Glossary
diff --git a/src/kernel.c b/src/kernel.c
index 36ed0c121..05d7c7c84 100644
--- a/src/kernel.c
+++ b/src/kernel.c
@@ -13,6 +13,7 @@
 #include <mruby/variable.h>
 #include <mruby/error.h>
 #include <mruby/istruct.h>
+#include <mruby/presym.h>
 
 MRB_API mrb_bool
 mrb_func_basic_p(mrb_state *mrb, mrb_value obj, mrb_sym mid, mrb_func_t func)
diff --git a/src/numeric.c b/src/numeric.c
index 59136bece..cef6fac96 100644
--- a/src/numeric.c
+++ b/src/numeric.c
@@ -17,6 +17,7 @@
 #include <mruby/numeric.h>
 #include <mruby/string.h>
 #include <mruby/class.h>
+#include <mruby/presym.h>
 
 #ifndef MRB_NO_FLOAT
 #ifdef MRB_USE_FLOAT32
diff --git a/src/object.c b/src/object.c
index bf4d743ff..d6474ae97 100644
--- a/src/object.c
+++ b/src/object.c
@@ -9,6 +9,7 @@
 #include <mruby/numeric.h>
 #include <mruby/string.h>
 #include <mruby/class.h>
+#include <mruby/presym.h>
 
 MRB_API mrb_bool
 mrb_obj_eq(mrb_state *mrb, mrb_value v1, mrb_value v2)
diff --git a/src/print.c b/src/print.c
index 68b2aad91..607eb9d1f 100644
--- a/src/print.c
+++ b/src/print.c
@@ -8,6 +8,7 @@
 #include <mruby/string.h>
 #include <mruby/variable.h>
 #include <mruby/error.h>
+#include <mruby/presym.h>
 #include <string.h>
 
 #ifndef MRB_NO_STDIO
diff --git a/src/proc.c b/src/proc.c
index 72d7ad120..870d5ea16 100644
--- a/src/proc.c
+++ b/src/proc.c
@@ -9,6 +9,7 @@
 #include <mruby/proc.h>
 #include <mruby/opcode.h>
 #include <mruby/data.h>
+#include <mruby/presym.h>
 
 static const mrb_code call_iseq[] = {
   OP_CALL,
diff --git a/src/range.c b/src/range.c
index f3f02a010..a109257c0 100644
--- a/src/range.c
+++ b/src/range.c
@@ -9,6 +9,7 @@
 #include <mruby/range.h>
 #include <mruby/string.h>
 #include <mruby/array.h>
+#include <mruby/presym.h>
 
 #define RANGE_INITIALIZED_MASK 1
 #define RANGE_INITIALIZED(p) ((p)->flags |= RANGE_INITIALIZED_MASK)
diff --git a/src/string.c b/src/string.c
index 83401b3db..eb4136b10 100644
--- a/src/string.c
+++ b/src/string.c
@@ -22,6 +22,7 @@
 #include <mruby/range.h>
 #include <mruby/string.h>
 #include <mruby/numeric.h>
+#include <mruby/presym.h>
 
 typedef struct mrb_shared_string {
   int refcnt;
diff --git a/src/symbol.c b/src/symbol.c
index 29d8a491b..0ea99533e 100644
--- a/src/symbol.c
+++ b/src/symbol.c
@@ -11,6 +11,7 @@
 #include <mruby/string.h>
 #include <mruby/dump.h>
 #include <mruby/class.h>
+#include <mruby/presym.h>
 
 #ifndef MRB_NO_PRESYM
 
diff --git a/src/variable.c b/src/variable.c
index 9343a2bf5..d5a7d90c7 100644
--- a/src/variable.c
+++ b/src/variable.c
@@ -10,6 +10,7 @@
 #include <mruby/proc.h>
 #include <mruby/string.h>
 #include <mruby/variable.h>
+#include <mruby/presym.h>
 
 struct iv_elem {
   mrb_sym key;
diff --git a/src/vm.c b/src/vm.c
index dd18ed44d..7a5365ebe 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -24,6 +24,7 @@
 #include "value_array.h"
 #include <mruby/throw.h>
 #include <mruby/dump.h>
+#include <mruby/presym.h>
 
 #ifdef MRB_NO_STDIO
 #if defined(__cplusplus)
diff --git a/tasks/presym.rake b/tasks/presym.rake
index 6ee7bd9d3..537d42487 100644
--- a/tasks/presym.rake
+++ b/tasks/presym.rake
@@ -13,8 +13,8 @@ MRuby.each_target do |build|
   presym = build.presym
 
   include_dir = "#{build.build_dir}/include"
-  build.compilers.each{|c| c.include_paths.unshift include_dir}
-  build.gems.each{|gem| gem.compilers.each{|c| c.include_paths.unshift include_dir}}
+  build.compilers.each{|c| c.include_paths << include_dir}
+  build.gems.each{|gem| gem.compilers.each{|c| c.include_paths << include_dir}}
 
   prereqs = {}
   pps = []