diff options
| -rw-r--r-- | src/variable.c | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/src/variable.c b/src/variable.c index 36ad24d09..52ffb42e7 100644 --- a/src/variable.c +++ b/src/variable.c @@ -27,12 +27,21 @@ typedef struct segment { struct segment *next; } segment; +/* Instance variable table structure */ typedef struct iv_tbl { segment *rootseg; size_t size; size_t last_len; } iv_tbl; +/* + * Creates instance variable table. + * + * Parameters + * mrb + * Returns + * the instance variable table. + */ static iv_tbl* iv_new(mrb_state *mrb) { @@ -47,6 +56,15 @@ iv_new(mrb_state *mrb) return t; } +/* + * Set the value for the symbol in the instance variable table. + * + * Parameters + * mrb + * t the instance variable table to be set in. + * sym the symbol to be used as the key. + * val the value to be set. + */ static void iv_put(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value val) { @@ -59,7 +77,7 @@ iv_put(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value val) while (seg) { for (i=0; i<MRB_SEGMENT_SIZE; i++) { mrb_sym key = seg->key[i]; - /* found room in last segment after last_len */ + /* Found room in last segment after last_len */ if (!seg->next && i >= t->last_len) { seg->key[i] = sym; seg->val[i] = val; @@ -80,7 +98,7 @@ iv_put(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value val) seg = seg->next; } - /* not found */ + /* Not found */ t->size++; if (matched_seg) { matched_seg->key[matched_idx] = sym; @@ -103,6 +121,18 @@ iv_put(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value val) return; } +/* + * Get a value for a symbol from the instance the variable table. + * + * Parameters + * mrb + * t the variable table to be searched. + * sym the symbol to be used as the key. + * vp the value pointer. Recieves the value if if the specified symbol contains + * in the instance variable table. + * Returns + * true if the specfiyed symbol contains in the instance variable table. + */ static mrb_bool iv_get(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value *vp) { @@ -127,6 +157,17 @@ iv_get(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value *vp) return FALSE; } +/* + * Deletes the value for the symbol from the instance variable table. + * + * Parameters + * t the variable table to be searched. + * sym the symbol to be used as the key. + * vp the value pointer. Recieve the deleted value if the symbol contans + * in the instance varible table. + * Returns + * true if the specfied symbol contains in the instance variable table. + */ static mrb_bool iv_del(mrb_state *mrb, iv_tbl *t, mrb_sym sym, mrb_value *vp) { |