[270] | 1 | /*
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| 2 | ** variable.c - mruby variables
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| 3 | **
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| 4 | ** See Copyright Notice in mruby.h
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| 5 | */
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| 6 |
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[331] | 7 | #include <mruby.h>
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| 8 | #include <mruby/array.h>
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| 9 | #include <mruby/class.h>
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| 10 | #include <mruby/proc.h>
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| 11 | #include <mruby/string.h>
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[270] | 12 |
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| 13 | typedef int (iv_foreach_func)(mrb_state*,mrb_sym,mrb_value,void*);
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| 14 |
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| 15 | #ifdef MRB_USE_IV_SEGLIST
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| 16 |
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| 17 | #ifndef MRB_SEGMENT_SIZE
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| 18 | #define MRB_SEGMENT_SIZE 4
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| 19 | #endif
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| 20 |
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| 21 | typedef struct segment {
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| 22 | mrb_sym key[MRB_SEGMENT_SIZE];
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| 23 | mrb_value val[MRB_SEGMENT_SIZE];
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| 24 | struct segment *next;
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| 25 | } segment;
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| 26 |
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| 27 | /* Instance variable table structure */
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| 28 | typedef struct iv_tbl {
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| 29 | segment *rootseg;
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| 30 | size_t size;
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| 31 | size_t last_len;
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| 32 | } iv_tbl;
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| 33 |
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| 34 | /*
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| 35 | * Creates the instance variable table.
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| 36 | *
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| 37 | * Parameters
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| 38 | * mrb
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| 39 | * Returns
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| 40 | * the instance variable table.
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| 41 | */
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| 42 | static iv_tbl*
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| 43 | iv_new(mrb_state *mrb)
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| 44 | {
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| 45 | iv_tbl *t;
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| 46 |
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[331] | 47 | t = (iv_tbl*)mrb_malloc(mrb, sizeof(iv_tbl));
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[270] | 48 | t->size = 0;
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| 49 | t->rootseg = NULL;
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| 50 | t->last_len = 0;
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| 51 |
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| 52 | return t;
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| 53 | }
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| 54 |
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| 55 | /*
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| 56 | * Set the value for the symbol in the instance variable table.
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| 57 | *
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| 58 | * Parameters
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| 59 | * mrb
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| 60 | * t the instance variable table to be set in.
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| 61 | * sym the symbol to be used as the key.
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| 62 | * val the value to be set.
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| 63 | */
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| 64 | static void
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| 65 | iv_put(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value val)
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| 66 | {
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| 67 | segment *seg = t->rootseg;
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| 68 | segment *prev = NULL;
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| 69 | segment *matched_seg = NULL;
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| 70 | size_t matched_idx = 0;
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| 71 | size_t i;
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| 72 |
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| 73 | while (seg) {
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| 74 | for (i=0; i<MRB_SEGMENT_SIZE; i++) {
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| 75 | mrb_sym key = seg->key[i];
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| 76 | /* Found room in last segment after last_len */
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| 77 | if (!seg->next && i >= t->last_len) {
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| 78 | seg->key[i] = sym;
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| 79 | seg->val[i] = val;
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| 80 | t->last_len = i+1;
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| 81 | t->size++;
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| 82 | return;
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| 83 | }
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| 84 | if (!matched_seg && key == 0) {
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| 85 | matched_seg = seg;
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| 86 | matched_idx = i;
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| 87 | }
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| 88 | else if (key == sym) {
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| 89 | seg->val[i] = val;
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| 90 | return;
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| 91 | }
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| 92 | }
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| 93 | prev = seg;
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| 94 | seg = seg->next;
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| 95 | }
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| 96 |
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| 97 | /* Not found */
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| 98 | t->size++;
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| 99 | if (matched_seg) {
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| 100 | matched_seg->key[matched_idx] = sym;
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| 101 | matched_seg->val[matched_idx] = val;
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| 102 | return;
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| 103 | }
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| 104 |
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[331] | 105 | seg = (segment*)mrb_malloc(mrb, sizeof(segment));
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[270] | 106 | if (!seg) return;
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| 107 | seg->next = NULL;
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| 108 | seg->key[0] = sym;
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| 109 | seg->val[0] = val;
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| 110 | t->last_len = 1;
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| 111 | if (prev) {
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| 112 | prev->next = seg;
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| 113 | }
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| 114 | else {
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| 115 | t->rootseg = seg;
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| 116 | }
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| 117 | }
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| 118 |
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| 119 | /*
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| 120 | * Get a value for a symbol from the instance variable table.
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| 121 | *
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| 122 | * Parameters
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| 123 | * mrb
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| 124 | * t the variable table to be searched.
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| 125 | * sym the symbol to be used as the key.
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| 126 | * vp the value pointer. Receives the value if the specified symbol is
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| 127 | * contained in the instance variable table.
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| 128 | * Returns
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| 129 | * true if the specified symbol is contained in the instance variable table.
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| 130 | */
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| 131 | static mrb_bool
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| 132 | iv_get(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value *vp)
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| 133 | {
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| 134 | segment *seg;
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| 135 | size_t i;
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| 136 |
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| 137 | seg = t->rootseg;
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| 138 | while (seg) {
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| 139 | for (i=0; i<MRB_SEGMENT_SIZE; i++) {
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| 140 | mrb_sym key = seg->key[i];
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| 141 |
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| 142 | if (!seg->next && i >= t->last_len) {
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| 143 | return FALSE;
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| 144 | }
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| 145 | if (key == sym) {
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| 146 | if (vp) *vp = seg->val[i];
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| 147 | return TRUE;
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| 148 | }
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| 149 | }
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| 150 | seg = seg->next;
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| 151 | }
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| 152 | return FALSE;
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| 153 | }
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| 154 |
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| 155 | /*
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| 156 | * Deletes the value for the symbol from the instance variable table.
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| 157 | *
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| 158 | * Parameters
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| 159 | * t the variable table to be searched.
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| 160 | * sym the symbol to be used as the key.
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| 161 | * vp the value pointer. Receive the deleted value if the symbol is
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| 162 | * contained in the instance variable table.
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| 163 | * Returns
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| 164 | * true if the specified symbol is contained in the instance variable table.
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| 165 | */
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| 166 | static mrb_bool
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| 167 | iv_del(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value *vp)
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| 168 | {
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| 169 | segment *seg;
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| 170 | size_t i;
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| 171 |
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| 172 | seg = t->rootseg;
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| 173 | while (seg) {
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| 174 | for (i=0; i<MRB_SEGMENT_SIZE; i++) {
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| 175 | mrb_sym key = seg->key[i];
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| 176 |
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| 177 | if (!seg->next && i >= t->last_len) {
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| 178 | return FALSE;
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| 179 | }
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| 180 | if (key == sym) {
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| 181 | t->size--;
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| 182 | seg->key[i] = 0;
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| 183 | if (vp) *vp = seg->val[i];
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| 184 | return TRUE;
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| 185 | }
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| 186 | }
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| 187 | seg = seg->next;
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| 188 | }
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| 189 | return FALSE;
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| 190 | }
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| 191 |
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| 192 | static mrb_bool
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| 193 | iv_foreach(mrb_state *mrb, iv_tbl *t, iv_foreach_func *func, void *p)
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| 194 | {
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| 195 | segment *seg;
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| 196 | size_t i;
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| 197 | int n;
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| 198 |
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| 199 | seg = t->rootseg;
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| 200 | while (seg) {
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| 201 | for (i=0; i<MRB_SEGMENT_SIZE; i++) {
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| 202 | mrb_sym key = seg->key[i];
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| 203 |
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| 204 | /* no value in last segment after last_len */
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| 205 | if (!seg->next && i >= t->last_len) {
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| 206 | return FALSE;
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| 207 | }
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| 208 | if (key != 0) {
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| 209 | n =(*func)(mrb, key, seg->val[i], p);
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| 210 | if (n > 0) return FALSE;
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| 211 | if (n < 0) {
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| 212 | t->size--;
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| 213 | seg->key[i] = 0;
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| 214 | }
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| 215 | }
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| 216 | }
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| 217 | seg = seg->next;
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| 218 | }
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| 219 | return TRUE;
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| 220 | }
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| 221 |
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| 222 | static size_t
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| 223 | iv_size(mrb_state *mrb, iv_tbl *t)
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| 224 | {
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| 225 | segment *seg;
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| 226 | size_t size = 0;
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| 227 |
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| 228 | if (!t) return 0;
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| 229 | if (t->size > 0) return t->size;
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| 230 | seg = t->rootseg;
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| 231 | while (seg) {
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| 232 | if (seg->next == NULL) {
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| 233 | size += t->last_len;
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| 234 | return size;
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| 235 | }
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| 236 | seg = seg->next;
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| 237 | size += MRB_SEGMENT_SIZE;
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| 238 | }
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| 239 | /* empty iv_tbl */
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| 240 | return 0;
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| 241 | }
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| 242 |
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| 243 | static iv_tbl*
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| 244 | iv_copy(mrb_state *mrb, iv_tbl *t)
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| 245 | {
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| 246 | segment *seg;
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| 247 | iv_tbl *t2;
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| 248 |
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| 249 | size_t i;
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| 250 |
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| 251 | seg = t->rootseg;
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| 252 | t2 = iv_new(mrb);
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| 253 |
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| 254 | while (seg != NULL) {
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| 255 | for (i=0; i<MRB_SEGMENT_SIZE; i++) {
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| 256 | mrb_sym key = seg->key[i];
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| 257 | mrb_value val = seg->val[i];
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| 258 |
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| 259 | if ((seg->next == NULL) && (i >= t->last_len)) {
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| 260 | return t2;
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| 261 | }
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| 262 | iv_put(mrb, t2, key, val);
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| 263 | }
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| 264 | seg = seg->next;
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| 265 | }
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| 266 | return t2;
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| 267 | }
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| 268 |
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| 269 | static void
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| 270 | iv_free(mrb_state *mrb, iv_tbl *t)
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| 271 | {
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| 272 | segment *seg;
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| 273 |
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| 274 | seg = t->rootseg;
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| 275 | while (seg) {
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| 276 | segment *p = seg;
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| 277 | seg = seg->next;
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| 278 | mrb_free(mrb, p);
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| 279 | }
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| 280 | mrb_free(mrb, t);
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| 281 | }
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| 282 |
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| 283 | #else
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| 284 |
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[331] | 285 | #include <mruby/khash.h>
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[270] | 286 |
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| 287 | #ifndef MRB_IVHASH_INIT_SIZE
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| 288 | #define MRB_IVHASH_INIT_SIZE 8
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| 289 | #endif
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| 290 |
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| 291 | KHASH_DECLARE(iv, mrb_sym, mrb_value, TRUE)
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| 292 | KHASH_DEFINE(iv, mrb_sym, mrb_value, TRUE, kh_int_hash_func, kh_int_hash_equal)
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| 293 |
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| 294 | typedef struct iv_tbl {
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| 295 | khash_t(iv) h;
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| 296 | } iv_tbl;
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| 297 |
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| 298 | static iv_tbl*
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| 299 | iv_new(mrb_state *mrb)
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| 300 | {
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| 301 | return (iv_tbl*)kh_init_size(iv, mrb, MRB_IVHASH_INIT_SIZE);
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| 302 | }
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| 303 |
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| 304 | static void
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| 305 | iv_put(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value val)
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| 306 | {
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| 307 | khash_t(iv) *h = &t->h;
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| 308 | khiter_t k;
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| 309 |
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| 310 | k = kh_put(iv, mrb, h, sym);
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| 311 | kh_value(h, k) = val;
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| 312 | }
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| 313 |
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| 314 | static mrb_bool
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| 315 | iv_get(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value *vp)
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| 316 | {
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| 317 | khash_t(iv) *h = &t->h;
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| 318 | khiter_t k;
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| 319 |
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| 320 | k = kh_get(iv, mrb, h, sym);
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| 321 | if (k != kh_end(h)) {
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| 322 | if (vp) *vp = kh_value(h, k);
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| 323 | return TRUE;
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| 324 | }
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| 325 | return FALSE;
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| 326 | }
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| 327 |
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| 328 | static mrb_bool
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| 329 | iv_del(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value *vp)
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| 330 | {
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| 331 | khash_t(iv) *h = &t->h;
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| 332 | khiter_t k;
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| 333 |
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| 334 | if (h) {
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| 335 | k = kh_get(iv, mrb, h, sym);
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| 336 | if (k != kh_end(h)) {
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| 337 | mrb_value val = kh_value(h, k);
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| 338 | kh_del(iv, mrb, h, k);
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| 339 | if (vp) *vp = val;
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| 340 | return TRUE;
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| 341 | }
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| 342 | }
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| 343 | return FALSE;
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| 344 | }
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| 345 |
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| 346 | static mrb_bool
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| 347 | iv_foreach(mrb_state *mrb, iv_tbl *t, iv_foreach_func *func, void *p)
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| 348 | {
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| 349 | khash_t(iv) *h = &t->h;
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| 350 | khiter_t k;
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| 351 | int n;
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| 352 |
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| 353 | if (h) {
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| 354 | for (k = kh_begin(h); k != kh_end(h); k++) {
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| 355 | if (kh_exist(h, k)) {
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| 356 | n = (*func)(mrb, kh_key(h, k), kh_value(h, k), p);
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| 357 | if (n > 0) return FALSE;
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| 358 | if (n < 0) {
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| 359 | kh_del(iv, mrb, h, k);
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| 360 | }
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| 361 | }
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| 362 | }
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| 363 | }
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| 364 | return TRUE;
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| 365 | }
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| 366 |
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| 367 | static size_t
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| 368 | iv_size(mrb_state *mrb, iv_tbl *t)
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| 369 | {
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| 370 | khash_t(iv) *h;
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| 371 |
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| 372 | if (t && (h = &t->h)) {
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| 373 | return kh_size(h);
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| 374 | }
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| 375 | return 0;
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| 376 | }
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| 377 |
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| 378 | static iv_tbl*
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| 379 | iv_copy(mrb_state *mrb, iv_tbl *t)
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| 380 | {
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| 381 | return (iv_tbl*)kh_copy(iv, mrb, &t->h);
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| 382 | }
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| 383 |
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| 384 | static void
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| 385 | iv_free(mrb_state *mrb, iv_tbl *t)
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| 386 | {
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| 387 | kh_destroy(iv, mrb, &t->h);
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| 388 | }
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| 389 |
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| 390 | #endif
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| 391 |
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| 392 | static int
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| 393 | iv_mark_i(mrb_state *mrb, mrb_sym sym, mrb_value v, void *p)
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| 394 | {
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| 395 | mrb_gc_mark_value(mrb, v);
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| 396 | return 0;
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| 397 | }
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| 398 |
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| 399 | static void
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| 400 | mark_tbl(mrb_state *mrb, iv_tbl *t)
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| 401 | {
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| 402 | if (t) {
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| 403 | iv_foreach(mrb, t, iv_mark_i, 0);
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| 404 | }
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| 405 | }
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| 406 |
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| 407 | void
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| 408 | mrb_gc_mark_gv(mrb_state *mrb)
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| 409 | {
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| 410 | mark_tbl(mrb, mrb->globals);
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| 411 | }
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| 412 |
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| 413 | void
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| 414 | mrb_gc_free_gv(mrb_state *mrb)
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| 415 | {
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| 416 | if (mrb->globals)
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| 417 | iv_free(mrb, mrb->globals);
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| 418 | }
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| 419 |
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| 420 | void
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| 421 | mrb_gc_mark_iv(mrb_state *mrb, struct RObject *obj)
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| 422 | {
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| 423 | mark_tbl(mrb, obj->iv);
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| 424 | }
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| 425 |
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| 426 | size_t
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| 427 | mrb_gc_mark_iv_size(mrb_state *mrb, struct RObject *obj)
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| 428 | {
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| 429 | return iv_size(mrb, obj->iv);
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| 430 | }
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| 431 |
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| 432 | void
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| 433 | mrb_gc_free_iv(mrb_state *mrb, struct RObject *obj)
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| 434 | {
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| 435 | if (obj->iv) {
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| 436 | iv_free(mrb, obj->iv);
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| 437 | }
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| 438 | }
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| 439 |
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| 440 | mrb_value
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| 441 | mrb_vm_special_get(mrb_state *mrb, mrb_sym i)
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| 442 | {
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| 443 | return mrb_fixnum_value(0);
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| 444 | }
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| 445 |
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| 446 | void
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| 447 | mrb_vm_special_set(mrb_state *mrb, mrb_sym i, mrb_value v)
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| 448 | {
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| 449 | }
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| 450 |
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| 451 | static mrb_bool
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| 452 | obj_iv_p(mrb_value obj)
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| 453 | {
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| 454 | switch (mrb_type(obj)) {
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| 455 | case MRB_TT_OBJECT:
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| 456 | case MRB_TT_CLASS:
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| 457 | case MRB_TT_MODULE:
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| 458 | case MRB_TT_SCLASS:
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| 459 | case MRB_TT_HASH:
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| 460 | case MRB_TT_DATA:
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| 461 | case MRB_TT_EXCEPTION:
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| 462 | return TRUE;
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| 463 | default:
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| 464 | return FALSE;
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| 465 | }
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| 466 | }
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| 467 |
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| 468 | MRB_API mrb_value
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| 469 | mrb_obj_iv_get(mrb_state *mrb, struct RObject *obj, mrb_sym sym)
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| 470 | {
|
---|
| 471 | mrb_value v;
|
---|
| 472 |
|
---|
| 473 | if (obj->iv && iv_get(mrb, obj->iv, sym, &v))
|
---|
| 474 | return v;
|
---|
| 475 | return mrb_nil_value();
|
---|
| 476 | }
|
---|
| 477 |
|
---|
| 478 | MRB_API mrb_value
|
---|
| 479 | mrb_iv_get(mrb_state *mrb, mrb_value obj, mrb_sym sym)
|
---|
| 480 | {
|
---|
| 481 | if (obj_iv_p(obj)) {
|
---|
| 482 | return mrb_obj_iv_get(mrb, mrb_obj_ptr(obj), sym);
|
---|
| 483 | }
|
---|
| 484 | return mrb_nil_value();
|
---|
| 485 | }
|
---|
| 486 |
|
---|
| 487 | MRB_API void
|
---|
| 488 | mrb_obj_iv_set(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v)
|
---|
| 489 | {
|
---|
| 490 | iv_tbl *t = obj->iv;
|
---|
| 491 |
|
---|
[331] | 492 | if (MRB_FROZEN_P(obj)) {
|
---|
| 493 | mrb_raisef(mrb, E_RUNTIME_ERROR, "can't modify frozen %S", mrb_obj_value(obj));
|
---|
| 494 | }
|
---|
[270] | 495 | if (!t) {
|
---|
| 496 | t = obj->iv = iv_new(mrb);
|
---|
| 497 | }
|
---|
| 498 | mrb_write_barrier(mrb, (struct RBasic*)obj);
|
---|
| 499 | iv_put(mrb, t, sym, v);
|
---|
| 500 | }
|
---|
| 501 |
|
---|
| 502 | MRB_API void
|
---|
| 503 | mrb_obj_iv_ifnone(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v)
|
---|
| 504 | {
|
---|
| 505 | iv_tbl *t = obj->iv;
|
---|
| 506 |
|
---|
| 507 | if (!t) {
|
---|
| 508 | t = obj->iv = iv_new(mrb);
|
---|
| 509 | }
|
---|
| 510 | else if (iv_get(mrb, t, sym, &v)) {
|
---|
| 511 | return;
|
---|
| 512 | }
|
---|
| 513 | mrb_write_barrier(mrb, (struct RBasic*)obj);
|
---|
| 514 | iv_put(mrb, t, sym, v);
|
---|
| 515 | }
|
---|
| 516 |
|
---|
| 517 | MRB_API void
|
---|
| 518 | mrb_iv_set(mrb_state *mrb, mrb_value obj, mrb_sym sym, mrb_value v)
|
---|
| 519 | {
|
---|
| 520 | if (obj_iv_p(obj)) {
|
---|
| 521 | mrb_obj_iv_set(mrb, mrb_obj_ptr(obj), sym, v);
|
---|
| 522 | }
|
---|
| 523 | else {
|
---|
| 524 | mrb_raise(mrb, E_ARGUMENT_ERROR, "cannot set instance variable");
|
---|
| 525 | }
|
---|
| 526 | }
|
---|
| 527 |
|
---|
| 528 | MRB_API mrb_bool
|
---|
| 529 | mrb_obj_iv_defined(mrb_state *mrb, struct RObject *obj, mrb_sym sym)
|
---|
| 530 | {
|
---|
| 531 | iv_tbl *t;
|
---|
| 532 |
|
---|
| 533 | t = obj->iv;
|
---|
| 534 | if (t) {
|
---|
| 535 | return iv_get(mrb, t, sym, NULL);
|
---|
| 536 | }
|
---|
| 537 | return FALSE;
|
---|
| 538 | }
|
---|
| 539 |
|
---|
| 540 | MRB_API mrb_bool
|
---|
| 541 | mrb_iv_defined(mrb_state *mrb, mrb_value obj, mrb_sym sym)
|
---|
| 542 | {
|
---|
| 543 | if (!obj_iv_p(obj)) return FALSE;
|
---|
| 544 | return mrb_obj_iv_defined(mrb, mrb_obj_ptr(obj), sym);
|
---|
| 545 | }
|
---|
| 546 |
|
---|
| 547 | #define identchar(c) (ISALNUM(c) || (c) == '_' || !ISASCII(c))
|
---|
| 548 |
|
---|
| 549 | MRB_API mrb_bool
|
---|
| 550 | mrb_iv_p(mrb_state *mrb, mrb_sym iv_name)
|
---|
| 551 | {
|
---|
| 552 | const char *s;
|
---|
| 553 | mrb_int i, len;
|
---|
| 554 |
|
---|
| 555 | s = mrb_sym2name_len(mrb, iv_name, &len);
|
---|
| 556 | if (len < 2) return FALSE;
|
---|
| 557 | if (s[0] != '@') return FALSE;
|
---|
| 558 | if (s[1] == '@') return FALSE;
|
---|
| 559 | for (i=1; i<len; i++) {
|
---|
| 560 | if (!identchar(s[i])) return FALSE;
|
---|
| 561 | }
|
---|
| 562 | return TRUE;
|
---|
| 563 | }
|
---|
| 564 |
|
---|
| 565 | MRB_API void
|
---|
| 566 | mrb_iv_check(mrb_state *mrb, mrb_sym iv_name)
|
---|
| 567 | {
|
---|
| 568 | if (!mrb_iv_p(mrb, iv_name)) {
|
---|
| 569 | mrb_name_error(mrb, iv_name, "'%S' is not allowed as an instance variable name", mrb_sym2str(mrb, iv_name));
|
---|
| 570 | }
|
---|
| 571 | }
|
---|
| 572 |
|
---|
| 573 | MRB_API void
|
---|
| 574 | mrb_iv_copy(mrb_state *mrb, mrb_value dest, mrb_value src)
|
---|
| 575 | {
|
---|
| 576 | struct RObject *d = mrb_obj_ptr(dest);
|
---|
| 577 | struct RObject *s = mrb_obj_ptr(src);
|
---|
| 578 |
|
---|
| 579 | if (d->iv) {
|
---|
| 580 | iv_free(mrb, d->iv);
|
---|
| 581 | d->iv = 0;
|
---|
| 582 | }
|
---|
| 583 | if (s->iv) {
|
---|
| 584 | mrb_write_barrier(mrb, (struct RBasic*)d);
|
---|
| 585 | d->iv = iv_copy(mrb, s->iv);
|
---|
| 586 | }
|
---|
| 587 | }
|
---|
| 588 |
|
---|
| 589 | static int
|
---|
| 590 | inspect_i(mrb_state *mrb, mrb_sym sym, mrb_value v, void *p)
|
---|
| 591 | {
|
---|
| 592 | mrb_value str = *(mrb_value*)p;
|
---|
| 593 | const char *s;
|
---|
| 594 | mrb_int len;
|
---|
| 595 | mrb_value ins;
|
---|
| 596 | char *sp = RSTRING_PTR(str);
|
---|
| 597 |
|
---|
| 598 | /* need not to show internal data */
|
---|
| 599 | if (sp[0] == '-') { /* first element */
|
---|
| 600 | sp[0] = '#';
|
---|
| 601 | mrb_str_cat_lit(mrb, str, " ");
|
---|
| 602 | }
|
---|
| 603 | else {
|
---|
| 604 | mrb_str_cat_lit(mrb, str, ", ");
|
---|
| 605 | }
|
---|
| 606 | s = mrb_sym2name_len(mrb, sym, &len);
|
---|
| 607 | mrb_str_cat(mrb, str, s, len);
|
---|
| 608 | mrb_str_cat_lit(mrb, str, "=");
|
---|
| 609 | if (mrb_type(v) == MRB_TT_OBJECT) {
|
---|
| 610 | ins = mrb_any_to_s(mrb, v);
|
---|
| 611 | }
|
---|
| 612 | else {
|
---|
| 613 | ins = mrb_inspect(mrb, v);
|
---|
| 614 | }
|
---|
| 615 | mrb_str_cat_str(mrb, str, ins);
|
---|
| 616 | return 0;
|
---|
| 617 | }
|
---|
| 618 |
|
---|
| 619 | mrb_value
|
---|
| 620 | mrb_obj_iv_inspect(mrb_state *mrb, struct RObject *obj)
|
---|
| 621 | {
|
---|
| 622 | iv_tbl *t = obj->iv;
|
---|
| 623 | size_t len = iv_size(mrb, t);
|
---|
| 624 |
|
---|
| 625 | if (len > 0) {
|
---|
| 626 | const char *cn = mrb_obj_classname(mrb, mrb_obj_value(obj));
|
---|
| 627 | mrb_value str = mrb_str_buf_new(mrb, 30);
|
---|
| 628 |
|
---|
| 629 | mrb_str_cat_lit(mrb, str, "-<");
|
---|
| 630 | mrb_str_cat_cstr(mrb, str, cn);
|
---|
| 631 | mrb_str_cat_lit(mrb, str, ":");
|
---|
| 632 | mrb_str_concat(mrb, str, mrb_ptr_to_str(mrb, obj));
|
---|
| 633 |
|
---|
| 634 | iv_foreach(mrb, t, inspect_i, &str);
|
---|
| 635 | mrb_str_cat_lit(mrb, str, ">");
|
---|
| 636 | return str;
|
---|
| 637 | }
|
---|
| 638 | return mrb_any_to_s(mrb, mrb_obj_value(obj));
|
---|
| 639 | }
|
---|
| 640 |
|
---|
| 641 | MRB_API mrb_value
|
---|
| 642 | mrb_iv_remove(mrb_state *mrb, mrb_value obj, mrb_sym sym)
|
---|
| 643 | {
|
---|
| 644 | if (obj_iv_p(obj)) {
|
---|
| 645 | iv_tbl *t = mrb_obj_ptr(obj)->iv;
|
---|
| 646 | mrb_value val;
|
---|
| 647 |
|
---|
| 648 | if (t && iv_del(mrb, t, sym, &val)) {
|
---|
| 649 | return val;
|
---|
| 650 | }
|
---|
| 651 | }
|
---|
| 652 | return mrb_undef_value();
|
---|
| 653 | }
|
---|
| 654 |
|
---|
| 655 | mrb_value
|
---|
| 656 | mrb_vm_iv_get(mrb_state *mrb, mrb_sym sym)
|
---|
| 657 | {
|
---|
| 658 | /* get self */
|
---|
| 659 | return mrb_iv_get(mrb, mrb->c->stack[0], sym);
|
---|
| 660 | }
|
---|
| 661 |
|
---|
| 662 | void
|
---|
| 663 | mrb_vm_iv_set(mrb_state *mrb, mrb_sym sym, mrb_value v)
|
---|
| 664 | {
|
---|
| 665 | /* get self */
|
---|
| 666 | mrb_iv_set(mrb, mrb->c->stack[0], sym, v);
|
---|
| 667 | }
|
---|
| 668 |
|
---|
| 669 | static int
|
---|
| 670 | iv_i(mrb_state *mrb, mrb_sym sym, mrb_value v, void *p)
|
---|
| 671 | {
|
---|
| 672 | mrb_value ary;
|
---|
| 673 | const char* s;
|
---|
| 674 | mrb_int len;
|
---|
| 675 |
|
---|
| 676 | ary = *(mrb_value*)p;
|
---|
| 677 | s = mrb_sym2name_len(mrb, sym, &len);
|
---|
| 678 | if (len > 1 && s[0] == '@' && s[1] != '@') {
|
---|
| 679 | mrb_ary_push(mrb, ary, mrb_symbol_value(sym));
|
---|
| 680 | }
|
---|
| 681 | return 0;
|
---|
| 682 | }
|
---|
| 683 |
|
---|
| 684 | /* 15.3.1.3.23 */
|
---|
| 685 | /*
|
---|
| 686 | * call-seq:
|
---|
| 687 | * obj.instance_variables -> array
|
---|
| 688 | *
|
---|
| 689 | * Returns an array of instance variable names for the receiver. Note
|
---|
| 690 | * that simply defining an accessor does not create the corresponding
|
---|
| 691 | * instance variable.
|
---|
| 692 | *
|
---|
| 693 | * class Fred
|
---|
| 694 | * attr_accessor :a1
|
---|
| 695 | * def initialize
|
---|
| 696 | * @iv = 3
|
---|
| 697 | * end
|
---|
| 698 | * end
|
---|
| 699 | * Fred.new.instance_variables #=> [:@iv]
|
---|
| 700 | */
|
---|
| 701 | mrb_value
|
---|
| 702 | mrb_obj_instance_variables(mrb_state *mrb, mrb_value self)
|
---|
| 703 | {
|
---|
| 704 | mrb_value ary;
|
---|
| 705 |
|
---|
| 706 | ary = mrb_ary_new(mrb);
|
---|
| 707 | if (obj_iv_p(self) && mrb_obj_ptr(self)->iv) {
|
---|
| 708 | iv_foreach(mrb, mrb_obj_ptr(self)->iv, iv_i, &ary);
|
---|
| 709 | }
|
---|
| 710 | return ary;
|
---|
| 711 | }
|
---|
| 712 |
|
---|
| 713 | static int
|
---|
| 714 | cv_i(mrb_state *mrb, mrb_sym sym, mrb_value v, void *p)
|
---|
| 715 | {
|
---|
| 716 | mrb_value ary;
|
---|
| 717 | const char* s;
|
---|
| 718 | mrb_int len;
|
---|
| 719 |
|
---|
| 720 | ary = *(mrb_value*)p;
|
---|
| 721 | s = mrb_sym2name_len(mrb, sym, &len);
|
---|
| 722 | if (len > 2 && s[0] == '@' && s[1] == '@') {
|
---|
| 723 | mrb_ary_push(mrb, ary, mrb_symbol_value(sym));
|
---|
| 724 | }
|
---|
| 725 | return 0;
|
---|
| 726 | }
|
---|
| 727 |
|
---|
| 728 | /* 15.2.2.4.19 */
|
---|
| 729 | /*
|
---|
| 730 | * call-seq:
|
---|
| 731 | * mod.class_variables -> array
|
---|
| 732 | *
|
---|
| 733 | * Returns an array of the names of class variables in <i>mod</i>.
|
---|
| 734 | *
|
---|
| 735 | * class One
|
---|
| 736 | * @@var1 = 1
|
---|
| 737 | * end
|
---|
| 738 | * class Two < One
|
---|
| 739 | * @@var2 = 2
|
---|
| 740 | * end
|
---|
| 741 | * One.class_variables #=> [:@@var1]
|
---|
| 742 | * Two.class_variables #=> [:@@var2]
|
---|
| 743 | */
|
---|
| 744 | mrb_value
|
---|
| 745 | mrb_mod_class_variables(mrb_state *mrb, mrb_value mod)
|
---|
| 746 | {
|
---|
| 747 | mrb_value ary;
|
---|
| 748 | struct RClass *c;
|
---|
| 749 |
|
---|
| 750 | ary = mrb_ary_new(mrb);
|
---|
| 751 | c = mrb_class_ptr(mod);
|
---|
| 752 | while (c) {
|
---|
| 753 | if (c->iv) {
|
---|
| 754 | iv_foreach(mrb, c->iv, cv_i, &ary);
|
---|
| 755 | }
|
---|
| 756 | c = c->super;
|
---|
| 757 | }
|
---|
| 758 | return ary;
|
---|
| 759 | }
|
---|
| 760 |
|
---|
| 761 | MRB_API mrb_value
|
---|
[331] | 762 | mrb_mod_cv_get(mrb_state *mrb, struct RClass *c, mrb_sym sym)
|
---|
[270] | 763 | {
|
---|
| 764 | struct RClass * cls = c;
|
---|
| 765 | mrb_value v;
|
---|
[331] | 766 | int given = FALSE;
|
---|
[270] | 767 |
|
---|
| 768 | while (c) {
|
---|
| 769 | if (c->iv && iv_get(mrb, c->iv, sym, &v)) {
|
---|
[331] | 770 | given = TRUE;
|
---|
[270] | 771 | }
|
---|
| 772 | c = c->super;
|
---|
| 773 | }
|
---|
[331] | 774 | if (given) return v;
|
---|
[270] | 775 | if (cls && cls->tt == MRB_TT_SCLASS) {
|
---|
| 776 | mrb_value klass;
|
---|
| 777 |
|
---|
| 778 | klass = mrb_obj_iv_get(mrb, (struct RObject *)cls,
|
---|
| 779 | mrb_intern_lit(mrb, "__attached__"));
|
---|
| 780 | c = mrb_class_ptr(klass);
|
---|
[331] | 781 | if (c->tt == MRB_TT_CLASS || c->tt == MRB_TT_MODULE) {
|
---|
| 782 | given = FALSE;
|
---|
[270] | 783 | while (c) {
|
---|
| 784 | if (c->iv && iv_get(mrb, c->iv, sym, &v)) {
|
---|
[331] | 785 | given = TRUE;
|
---|
[270] | 786 | }
|
---|
| 787 | c = c->super;
|
---|
| 788 | }
|
---|
[331] | 789 | if (given) return v;
|
---|
[270] | 790 | }
|
---|
| 791 | }
|
---|
| 792 | mrb_name_error(mrb, sym, "uninitialized class variable %S in %S",
|
---|
| 793 | mrb_sym2str(mrb, sym), mrb_obj_value(cls));
|
---|
| 794 | /* not reached */
|
---|
| 795 | return mrb_nil_value();
|
---|
| 796 | }
|
---|
| 797 |
|
---|
| 798 | MRB_API mrb_value
|
---|
| 799 | mrb_cv_get(mrb_state *mrb, mrb_value mod, mrb_sym sym)
|
---|
| 800 | {
|
---|
| 801 | return mrb_mod_cv_get(mrb, mrb_class_ptr(mod), sym);
|
---|
| 802 | }
|
---|
| 803 |
|
---|
| 804 | MRB_API void
|
---|
| 805 | mrb_mod_cv_set(mrb_state *mrb, struct RClass *c, mrb_sym sym, mrb_value v)
|
---|
| 806 | {
|
---|
| 807 | struct RClass * cls = c;
|
---|
| 808 |
|
---|
| 809 | while (c) {
|
---|
| 810 | if (c->iv) {
|
---|
| 811 | iv_tbl *t = c->iv;
|
---|
| 812 |
|
---|
| 813 | if (iv_get(mrb, t, sym, NULL)) {
|
---|
| 814 | mrb_write_barrier(mrb, (struct RBasic*)c);
|
---|
| 815 | iv_put(mrb, t, sym, v);
|
---|
| 816 | return;
|
---|
| 817 | }
|
---|
| 818 | }
|
---|
| 819 | c = c->super;
|
---|
| 820 | }
|
---|
| 821 |
|
---|
[331] | 822 | if (cls && cls->tt == MRB_TT_SCLASS) {
|
---|
| 823 | mrb_value klass;
|
---|
| 824 |
|
---|
| 825 | klass = mrb_obj_iv_get(mrb, (struct RObject*)cls,
|
---|
| 826 | mrb_intern_lit(mrb, "__attached__"));
|
---|
| 827 | switch (mrb_type(klass)) {
|
---|
| 828 | case MRB_TT_CLASS:
|
---|
| 829 | case MRB_TT_MODULE:
|
---|
| 830 | case MRB_TT_SCLASS:
|
---|
| 831 | c = mrb_class_ptr(klass);
|
---|
| 832 | break;
|
---|
| 833 | default:
|
---|
| 834 | c = cls;
|
---|
| 835 | break;
|
---|
| 836 | }
|
---|
[270] | 837 | }
|
---|
[331] | 838 | else{
|
---|
| 839 | c = cls;
|
---|
| 840 | }
|
---|
[270] | 841 |
|
---|
[331] | 842 | if (!c->iv) {
|
---|
| 843 | c->iv = iv_new(mrb);
|
---|
| 844 | }
|
---|
| 845 |
|
---|
| 846 | mrb_write_barrier(mrb, (struct RBasic*)c);
|
---|
| 847 | iv_put(mrb, c->iv, sym, v);
|
---|
[270] | 848 | }
|
---|
| 849 |
|
---|
| 850 | MRB_API void
|
---|
| 851 | mrb_cv_set(mrb_state *mrb, mrb_value mod, mrb_sym sym, mrb_value v)
|
---|
| 852 | {
|
---|
| 853 | mrb_mod_cv_set(mrb, mrb_class_ptr(mod), sym, v);
|
---|
| 854 | }
|
---|
| 855 |
|
---|
| 856 | MRB_API mrb_bool
|
---|
| 857 | mrb_mod_cv_defined(mrb_state *mrb, struct RClass * c, mrb_sym sym)
|
---|
| 858 | {
|
---|
| 859 | while (c) {
|
---|
| 860 | if (c->iv) {
|
---|
| 861 | iv_tbl *t = c->iv;
|
---|
| 862 | if (iv_get(mrb, t, sym, NULL)) return TRUE;
|
---|
| 863 | }
|
---|
| 864 | c = c->super;
|
---|
| 865 | }
|
---|
| 866 |
|
---|
| 867 | return FALSE;
|
---|
| 868 | }
|
---|
| 869 |
|
---|
| 870 | MRB_API mrb_bool
|
---|
| 871 | mrb_cv_defined(mrb_state *mrb, mrb_value mod, mrb_sym sym)
|
---|
| 872 | {
|
---|
| 873 | return mrb_mod_cv_defined(mrb, mrb_class_ptr(mod), sym);
|
---|
| 874 | }
|
---|
| 875 |
|
---|
| 876 | mrb_value
|
---|
| 877 | mrb_vm_cv_get(mrb_state *mrb, mrb_sym sym)
|
---|
| 878 | {
|
---|
| 879 | struct RClass *c = mrb->c->ci->proc->target_class;
|
---|
| 880 |
|
---|
| 881 | if (!c) c = mrb->c->ci->target_class;
|
---|
| 882 |
|
---|
| 883 | return mrb_mod_cv_get(mrb, c, sym);
|
---|
| 884 | }
|
---|
| 885 |
|
---|
| 886 | void
|
---|
| 887 | mrb_vm_cv_set(mrb_state *mrb, mrb_sym sym, mrb_value v)
|
---|
| 888 | {
|
---|
| 889 | struct RClass *c = mrb->c->ci->proc->target_class;
|
---|
| 890 |
|
---|
| 891 | if (!c) c = mrb->c->ci->target_class;
|
---|
| 892 | mrb_mod_cv_set(mrb, c, sym, v);
|
---|
| 893 | }
|
---|
| 894 |
|
---|
| 895 | static void
|
---|
| 896 | mod_const_check(mrb_state *mrb, mrb_value mod)
|
---|
| 897 | {
|
---|
| 898 | switch (mrb_type(mod)) {
|
---|
| 899 | case MRB_TT_CLASS:
|
---|
| 900 | case MRB_TT_MODULE:
|
---|
| 901 | case MRB_TT_SCLASS:
|
---|
| 902 | break;
|
---|
| 903 | default:
|
---|
| 904 | mrb_raise(mrb, E_TYPE_ERROR, "constant look-up for non class/module");
|
---|
| 905 | break;
|
---|
| 906 | }
|
---|
| 907 | }
|
---|
| 908 |
|
---|
| 909 | static mrb_value
|
---|
| 910 | const_get(mrb_state *mrb, struct RClass *base, mrb_sym sym)
|
---|
| 911 | {
|
---|
| 912 | struct RClass *c = base;
|
---|
| 913 | mrb_value v;
|
---|
| 914 | iv_tbl *t;
|
---|
| 915 | mrb_bool retry = FALSE;
|
---|
| 916 | mrb_value name;
|
---|
| 917 |
|
---|
| 918 | L_RETRY:
|
---|
| 919 | while (c) {
|
---|
| 920 | if (c->iv) {
|
---|
| 921 | t = c->iv;
|
---|
| 922 | if (iv_get(mrb, t, sym, &v))
|
---|
| 923 | return v;
|
---|
| 924 | }
|
---|
| 925 | c = c->super;
|
---|
| 926 | }
|
---|
| 927 | if (!retry && base && base->tt == MRB_TT_MODULE) {
|
---|
| 928 | c = mrb->object_class;
|
---|
| 929 | retry = TRUE;
|
---|
| 930 | goto L_RETRY;
|
---|
| 931 | }
|
---|
| 932 | name = mrb_symbol_value(sym);
|
---|
| 933 | return mrb_funcall_argv(mrb, mrb_obj_value(base), mrb_intern_lit(mrb, "const_missing"), 1, &name);
|
---|
| 934 | }
|
---|
| 935 |
|
---|
| 936 | MRB_API mrb_value
|
---|
| 937 | mrb_const_get(mrb_state *mrb, mrb_value mod, mrb_sym sym)
|
---|
| 938 | {
|
---|
| 939 | mod_const_check(mrb, mod);
|
---|
| 940 | return const_get(mrb, mrb_class_ptr(mod), sym);
|
---|
| 941 | }
|
---|
| 942 |
|
---|
| 943 | mrb_value
|
---|
| 944 | mrb_vm_const_get(mrb_state *mrb, mrb_sym sym)
|
---|
| 945 | {
|
---|
| 946 | struct RClass *c = mrb->c->ci->proc->target_class;
|
---|
| 947 |
|
---|
| 948 | if (!c) c = mrb->c->ci->target_class;
|
---|
| 949 | if (c) {
|
---|
| 950 | struct RClass *c2;
|
---|
| 951 | mrb_value v;
|
---|
| 952 |
|
---|
| 953 | if (c->iv && iv_get(mrb, c->iv, sym, &v)) {
|
---|
| 954 | return v;
|
---|
| 955 | }
|
---|
[331] | 956 | c2 = c;
|
---|
| 957 | while (c2 && c2->tt == MRB_TT_SCLASS) {
|
---|
[270] | 958 | mrb_value klass;
|
---|
[331] | 959 | klass = mrb_obj_iv_get(mrb, (struct RObject *)c2,
|
---|
[270] | 960 | mrb_intern_lit(mrb, "__attached__"));
|
---|
| 961 | c2 = mrb_class_ptr(klass);
|
---|
| 962 | }
|
---|
[331] | 963 | if (c2->tt == MRB_TT_CLASS || c2->tt == MRB_TT_MODULE) c = c2;
|
---|
[270] | 964 | c2 = c;
|
---|
| 965 | for (;;) {
|
---|
| 966 | c2 = mrb_class_outer_module(mrb, c2);
|
---|
| 967 | if (!c2) break;
|
---|
| 968 | if (c2->iv && iv_get(mrb, c2->iv, sym, &v)) {
|
---|
| 969 | return v;
|
---|
| 970 | }
|
---|
| 971 | }
|
---|
| 972 | }
|
---|
| 973 | return const_get(mrb, c, sym);
|
---|
| 974 | }
|
---|
| 975 |
|
---|
| 976 | MRB_API void
|
---|
| 977 | mrb_const_set(mrb_state *mrb, mrb_value mod, mrb_sym sym, mrb_value v)
|
---|
| 978 | {
|
---|
| 979 | mod_const_check(mrb, mod);
|
---|
| 980 | mrb_iv_set(mrb, mod, sym, v);
|
---|
| 981 | }
|
---|
| 982 |
|
---|
| 983 | void
|
---|
| 984 | mrb_vm_const_set(mrb_state *mrb, mrb_sym sym, mrb_value v)
|
---|
| 985 | {
|
---|
| 986 | struct RClass *c = mrb->c->ci->proc->target_class;
|
---|
| 987 |
|
---|
| 988 | if (!c) c = mrb->c->ci->target_class;
|
---|
| 989 | mrb_obj_iv_set(mrb, (struct RObject*)c, sym, v);
|
---|
| 990 | }
|
---|
| 991 |
|
---|
| 992 | MRB_API void
|
---|
| 993 | mrb_const_remove(mrb_state *mrb, mrb_value mod, mrb_sym sym)
|
---|
| 994 | {
|
---|
| 995 | mod_const_check(mrb, mod);
|
---|
| 996 | mrb_iv_remove(mrb, mod, sym);
|
---|
| 997 | }
|
---|
| 998 |
|
---|
| 999 | MRB_API void
|
---|
| 1000 | mrb_define_const(mrb_state *mrb, struct RClass *mod, const char *name, mrb_value v)
|
---|
| 1001 | {
|
---|
| 1002 | mrb_obj_iv_set(mrb, (struct RObject*)mod, mrb_intern_cstr(mrb, name), v);
|
---|
| 1003 | }
|
---|
| 1004 |
|
---|
| 1005 | MRB_API void
|
---|
| 1006 | mrb_define_global_const(mrb_state *mrb, const char *name, mrb_value val)
|
---|
| 1007 | {
|
---|
| 1008 | mrb_define_const(mrb, mrb->object_class, name, val);
|
---|
| 1009 | }
|
---|
| 1010 |
|
---|
| 1011 | static int
|
---|
| 1012 | const_i(mrb_state *mrb, mrb_sym sym, mrb_value v, void *p)
|
---|
| 1013 | {
|
---|
| 1014 | mrb_value ary;
|
---|
| 1015 | const char* s;
|
---|
| 1016 | mrb_int len;
|
---|
| 1017 |
|
---|
| 1018 | ary = *(mrb_value*)p;
|
---|
| 1019 | s = mrb_sym2name_len(mrb, sym, &len);
|
---|
| 1020 | if (len >= 1 && ISUPPER(s[0])) {
|
---|
| 1021 | mrb_ary_push(mrb, ary, mrb_symbol_value(sym));
|
---|
| 1022 | }
|
---|
| 1023 | return 0;
|
---|
| 1024 | }
|
---|
| 1025 |
|
---|
| 1026 | /* 15.2.2.4.24 */
|
---|
| 1027 | /*
|
---|
| 1028 | * call-seq:
|
---|
| 1029 | * mod.constants -> array
|
---|
| 1030 | *
|
---|
| 1031 | * Returns an array of all names of contants defined in the receiver.
|
---|
| 1032 | */
|
---|
| 1033 | mrb_value
|
---|
| 1034 | mrb_mod_constants(mrb_state *mrb, mrb_value mod)
|
---|
| 1035 | {
|
---|
| 1036 | mrb_value ary;
|
---|
| 1037 | mrb_bool inherit = TRUE;
|
---|
| 1038 | struct RClass *c = mrb_class_ptr(mod);
|
---|
| 1039 |
|
---|
| 1040 | mrb_get_args(mrb, "|b", &inherit);
|
---|
| 1041 | ary = mrb_ary_new(mrb);
|
---|
| 1042 | while (c) {
|
---|
| 1043 | if (c->iv) {
|
---|
| 1044 | iv_foreach(mrb, c->iv, const_i, &ary);
|
---|
| 1045 | }
|
---|
| 1046 | if (!inherit) break;
|
---|
| 1047 | c = c->super;
|
---|
| 1048 | if (c == mrb->object_class) break;
|
---|
| 1049 | }
|
---|
| 1050 | return ary;
|
---|
| 1051 | }
|
---|
| 1052 |
|
---|
| 1053 | MRB_API mrb_value
|
---|
| 1054 | mrb_gv_get(mrb_state *mrb, mrb_sym sym)
|
---|
| 1055 | {
|
---|
| 1056 | mrb_value v;
|
---|
| 1057 |
|
---|
| 1058 | if (!mrb->globals) {
|
---|
| 1059 | return mrb_nil_value();
|
---|
| 1060 | }
|
---|
| 1061 | if (iv_get(mrb, mrb->globals, sym, &v))
|
---|
| 1062 | return v;
|
---|
| 1063 | return mrb_nil_value();
|
---|
| 1064 | }
|
---|
| 1065 |
|
---|
| 1066 | MRB_API void
|
---|
| 1067 | mrb_gv_set(mrb_state *mrb, mrb_sym sym, mrb_value v)
|
---|
| 1068 | {
|
---|
| 1069 | iv_tbl *t;
|
---|
| 1070 |
|
---|
| 1071 | if (!mrb->globals) {
|
---|
| 1072 | t = mrb->globals = iv_new(mrb);
|
---|
| 1073 | }
|
---|
| 1074 | else {
|
---|
| 1075 | t = mrb->globals;
|
---|
| 1076 | }
|
---|
| 1077 | iv_put(mrb, t, sym, v);
|
---|
| 1078 | }
|
---|
| 1079 |
|
---|
| 1080 | MRB_API void
|
---|
| 1081 | mrb_gv_remove(mrb_state *mrb, mrb_sym sym)
|
---|
| 1082 | {
|
---|
| 1083 | if (!mrb->globals) {
|
---|
| 1084 | return;
|
---|
| 1085 | }
|
---|
| 1086 | iv_del(mrb, mrb->globals, sym, NULL);
|
---|
| 1087 | }
|
---|
| 1088 |
|
---|
| 1089 | static int
|
---|
| 1090 | gv_i(mrb_state *mrb, mrb_sym sym, mrb_value v, void *p)
|
---|
| 1091 | {
|
---|
| 1092 | mrb_value ary;
|
---|
| 1093 |
|
---|
| 1094 | ary = *(mrb_value*)p;
|
---|
| 1095 | mrb_ary_push(mrb, ary, mrb_symbol_value(sym));
|
---|
| 1096 | return 0;
|
---|
| 1097 | }
|
---|
| 1098 |
|
---|
| 1099 | /* 15.3.1.2.4 */
|
---|
| 1100 | /* 15.3.1.3.14 */
|
---|
| 1101 | /*
|
---|
| 1102 | * call-seq:
|
---|
| 1103 | * global_variables -> array
|
---|
| 1104 | *
|
---|
| 1105 | * Returns an array of the names of global variables.
|
---|
| 1106 | *
|
---|
| 1107 | * global_variables.grep /std/ #=> [:$stdin, :$stdout, :$stderr]
|
---|
| 1108 | */
|
---|
| 1109 | mrb_value
|
---|
| 1110 | mrb_f_global_variables(mrb_state *mrb, mrb_value self)
|
---|
| 1111 | {
|
---|
| 1112 | iv_tbl *t = mrb->globals;
|
---|
| 1113 | mrb_value ary = mrb_ary_new(mrb);
|
---|
| 1114 | size_t i;
|
---|
| 1115 | char buf[3];
|
---|
| 1116 |
|
---|
| 1117 | if (t) {
|
---|
| 1118 | iv_foreach(mrb, t, gv_i, &ary);
|
---|
| 1119 | }
|
---|
| 1120 | buf[0] = '$';
|
---|
| 1121 | buf[2] = 0;
|
---|
| 1122 | for (i = 1; i <= 9; ++i) {
|
---|
| 1123 | buf[1] = (char)(i + '0');
|
---|
| 1124 | mrb_ary_push(mrb, ary, mrb_symbol_value(mrb_intern(mrb, buf, 2)));
|
---|
| 1125 | }
|
---|
| 1126 | return ary;
|
---|
| 1127 | }
|
---|
| 1128 |
|
---|
| 1129 | static mrb_bool
|
---|
| 1130 | mrb_const_defined_0(mrb_state *mrb, mrb_value mod, mrb_sym id, mrb_bool exclude, mrb_bool recurse)
|
---|
| 1131 | {
|
---|
| 1132 | struct RClass *klass = mrb_class_ptr(mod);
|
---|
| 1133 | struct RClass *tmp;
|
---|
| 1134 | mrb_bool mod_retry = 0;
|
---|
| 1135 |
|
---|
| 1136 | tmp = klass;
|
---|
| 1137 | retry:
|
---|
| 1138 | while (tmp) {
|
---|
| 1139 | if (tmp->iv && iv_get(mrb, tmp->iv, id, NULL)) {
|
---|
| 1140 | return TRUE;
|
---|
| 1141 | }
|
---|
| 1142 | if (!recurse && (klass != mrb->object_class)) break;
|
---|
| 1143 | tmp = tmp->super;
|
---|
| 1144 | }
|
---|
| 1145 | if (!exclude && !mod_retry && (klass->tt == MRB_TT_MODULE)) {
|
---|
| 1146 | mod_retry = 1;
|
---|
| 1147 | tmp = mrb->object_class;
|
---|
| 1148 | goto retry;
|
---|
| 1149 | }
|
---|
| 1150 | return FALSE;
|
---|
| 1151 | }
|
---|
| 1152 |
|
---|
| 1153 | MRB_API mrb_bool
|
---|
| 1154 | mrb_const_defined(mrb_state *mrb, mrb_value mod, mrb_sym id)
|
---|
| 1155 | {
|
---|
| 1156 | return mrb_const_defined_0(mrb, mod, id, TRUE, TRUE);
|
---|
| 1157 | }
|
---|
| 1158 |
|
---|
| 1159 | MRB_API mrb_bool
|
---|
| 1160 | mrb_const_defined_at(mrb_state *mrb, mrb_value mod, mrb_sym id)
|
---|
| 1161 | {
|
---|
| 1162 | return mrb_const_defined_0(mrb, mod, id, TRUE, FALSE);
|
---|
| 1163 | }
|
---|
| 1164 |
|
---|
| 1165 | MRB_API mrb_value
|
---|
| 1166 | mrb_attr_get(mrb_state *mrb, mrb_value obj, mrb_sym id)
|
---|
| 1167 | {
|
---|
| 1168 | return mrb_iv_get(mrb, obj, id);
|
---|
| 1169 | }
|
---|
| 1170 |
|
---|
| 1171 | struct csym_arg {
|
---|
| 1172 | struct RClass *c;
|
---|
| 1173 | mrb_sym sym;
|
---|
| 1174 | };
|
---|
| 1175 |
|
---|
| 1176 | static int
|
---|
| 1177 | csym_i(mrb_state *mrb, mrb_sym sym, mrb_value v, void *p)
|
---|
| 1178 | {
|
---|
| 1179 | struct csym_arg *a = (struct csym_arg*)p;
|
---|
| 1180 | struct RClass *c = a->c;
|
---|
| 1181 |
|
---|
| 1182 | if (mrb_type(v) == c->tt && mrb_class_ptr(v) == c) {
|
---|
| 1183 | a->sym = sym;
|
---|
| 1184 | return 1; /* stop iteration */
|
---|
| 1185 | }
|
---|
| 1186 | return 0;
|
---|
| 1187 | }
|
---|
| 1188 |
|
---|
| 1189 | mrb_sym
|
---|
| 1190 | mrb_class_sym(mrb_state *mrb, struct RClass *c, struct RClass *outer)
|
---|
| 1191 | {
|
---|
| 1192 | mrb_value name;
|
---|
| 1193 |
|
---|
| 1194 | name = mrb_obj_iv_get(mrb, (struct RObject*)c, mrb_intern_lit(mrb, "__classid__"));
|
---|
| 1195 | if (mrb_nil_p(name)) {
|
---|
| 1196 |
|
---|
| 1197 | if (!outer) return 0;
|
---|
| 1198 | else {
|
---|
| 1199 | struct csym_arg arg;
|
---|
| 1200 |
|
---|
| 1201 | arg.c = c;
|
---|
| 1202 | arg.sym = 0;
|
---|
| 1203 | iv_foreach(mrb, outer->iv, csym_i, &arg);
|
---|
| 1204 | return arg.sym;
|
---|
| 1205 | }
|
---|
| 1206 | }
|
---|
| 1207 | return mrb_symbol(name);
|
---|
| 1208 | }
|
---|