diff options
Diffstat (limited to 'debian/vendor-h2o/deps/mruby/src/array.c')
-rw-r--r-- | debian/vendor-h2o/deps/mruby/src/array.c | 1249 |
1 files changed, 0 insertions, 1249 deletions
diff --git a/debian/vendor-h2o/deps/mruby/src/array.c b/debian/vendor-h2o/deps/mruby/src/array.c deleted file mode 100644 index 8f33def..0000000 --- a/debian/vendor-h2o/deps/mruby/src/array.c +++ /dev/null @@ -1,1249 +0,0 @@ -/* -** array.c - Array class -** -** See Copyright Notice in mruby.h -*/ - -#include <mruby.h> -#include <mruby/array.h> -#include <mruby/class.h> -#include <mruby/string.h> -#include <mruby/range.h> -#include "value_array.h" - -#define ARY_DEFAULT_LEN 4 -#define ARY_SHRINK_RATIO 5 /* must be larger than 2 */ -#define ARY_C_MAX_SIZE (SIZE_MAX / sizeof(mrb_value)) -#define ARY_MAX_SIZE ((mrb_int)((ARY_C_MAX_SIZE < (size_t)MRB_INT_MAX) ? ARY_C_MAX_SIZE : MRB_INT_MAX-1)) - -static struct RArray* -ary_new_capa(mrb_state *mrb, mrb_int capa) -{ - struct RArray *a; - size_t blen; - - if (capa > ARY_MAX_SIZE) { - mrb_raise(mrb, E_ARGUMENT_ERROR, "array size too big"); - } - blen = capa * sizeof(mrb_value); - - a = (struct RArray*)mrb_obj_alloc(mrb, MRB_TT_ARRAY, mrb->array_class); - if (capa <= MRB_ARY_EMBED_LEN_MAX) { - ARY_SET_EMBED_LEN(a, 0); - } - else { - a->as.heap.ptr = (mrb_value *)mrb_malloc(mrb, blen); - a->as.heap.aux.capa = capa; - a->as.heap.len = 0; - } - - return a; -} - -MRB_API mrb_value -mrb_ary_new_capa(mrb_state *mrb, mrb_int capa) -{ - struct RArray *a = ary_new_capa(mrb, capa); - return mrb_obj_value(a); -} - -MRB_API mrb_value -mrb_ary_new(mrb_state *mrb) -{ - return mrb_ary_new_capa(mrb, 0); -} - -/* - * to copy array, use this instead of memcpy because of portability - * * gcc on ARM may fail optimization of memcpy - * http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka3934.html - * * gcc on MIPS also fail - * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39755 - * * memcpy doesn't exist on freestanding environment - * - * If you optimize for binary size, use memcpy instead of this at your own risk - * of above portability issue. - * - * see also http://togetter.com/li/462898 - * - */ -static inline void -array_copy(mrb_value *dst, const mrb_value *src, mrb_int size) -{ - mrb_int i; - - for (i = 0; i < size; i++) { - dst[i] = src[i]; - } -} - -MRB_API mrb_value -mrb_ary_new_from_values(mrb_state *mrb, mrb_int size, const mrb_value *vals) -{ - struct RArray *a = ary_new_capa(mrb, size); - - array_copy(ARY_PTR(a), vals, size); - ARY_SET_LEN(a, size); - - return mrb_obj_value(a); -} - -MRB_API mrb_value -mrb_assoc_new(mrb_state *mrb, mrb_value car, mrb_value cdr) -{ - struct RArray *a; - - a = ary_new_capa(mrb, 2); - ARY_PTR(a)[0] = car; - ARY_PTR(a)[1] = cdr; - ARY_SET_LEN(a, 2); - return mrb_obj_value(a); -} - -static void -ary_fill_with_nil(mrb_value *ptr, mrb_int size) -{ - mrb_value nil = mrb_nil_value(); - - while (size--) { - *ptr++ = nil; - } -} - -static void -ary_modify_check(mrb_state *mrb, struct RArray *a) -{ - if (MRB_FROZEN_P(a)) { - mrb_raise(mrb, E_RUNTIME_ERROR, "can't modify frozen array"); - } -} - -static void -ary_modify(mrb_state *mrb, struct RArray *a) -{ - ary_modify_check(mrb, a); - - if (ARY_SHARED_P(a)) { - mrb_shared_array *shared = a->as.heap.aux.shared; - - if (shared->refcnt == 1 && a->as.heap.ptr == shared->ptr) { - a->as.heap.ptr = shared->ptr; - a->as.heap.aux.capa = a->as.heap.len; - mrb_free(mrb, shared); - } - else { - mrb_value *ptr, *p; - mrb_int len; - - p = a->as.heap.ptr; - len = a->as.heap.len * sizeof(mrb_value); - ptr = (mrb_value *)mrb_malloc(mrb, len); - if (p) { - array_copy(ptr, p, a->as.heap.len); - } - a->as.heap.ptr = ptr; - a->as.heap.aux.capa = a->as.heap.len; - mrb_ary_decref(mrb, shared); - } - ARY_UNSET_SHARED_FLAG(a); - } -} - -MRB_API void -mrb_ary_modify(mrb_state *mrb, struct RArray* a) -{ - mrb_write_barrier(mrb, (struct RBasic*)a); - ary_modify(mrb, a); -} - -static void -ary_make_shared(mrb_state *mrb, struct RArray *a) -{ - if (!ARY_SHARED_P(a) && !ARY_EMBED_P(a)) { - mrb_shared_array *shared = (mrb_shared_array *)mrb_malloc(mrb, sizeof(mrb_shared_array)); - mrb_value *ptr = a->as.heap.ptr; - mrb_int len = a->as.heap.len; - - shared->refcnt = 1; - if (a->as.heap.aux.capa > len) { - a->as.heap.ptr = shared->ptr = (mrb_value *)mrb_realloc(mrb, ptr, sizeof(mrb_value)*len+1); - } - else { - shared->ptr = ptr; - } - shared->len = len; - a->as.heap.aux.shared = shared; - ARY_SET_SHARED_FLAG(a); - } -} - -static void -ary_expand_capa(mrb_state *mrb, struct RArray *a, mrb_int len) -{ - mrb_int capa = ARY_CAPA(a); - - if (len > ARY_MAX_SIZE || len < 0) { - size_error: - mrb_raise(mrb, E_ARGUMENT_ERROR, "array size too big"); - } - - if (capa < ARY_DEFAULT_LEN) { - capa = ARY_DEFAULT_LEN; - } - while (capa < len) { - if (capa <= ARY_MAX_SIZE / 2) { - capa *= 2; - } - else { - capa = len; - } - } - if (capa < len || capa > ARY_MAX_SIZE) { - goto size_error; - } - - if (ARY_EMBED_P(a)) { - mrb_value *ptr = ARY_EMBED_PTR(a); - mrb_int len = ARY_EMBED_LEN(a); - mrb_value *expanded_ptr = (mrb_value *)mrb_malloc(mrb, sizeof(mrb_value)*capa); - - ARY_UNSET_EMBED_FLAG(a); - array_copy(expanded_ptr, ptr, len); - a->as.heap.len = len; - a->as.heap.aux.capa = capa; - a->as.heap.ptr = expanded_ptr; - } - else if (capa > a->as.heap.aux.capa) { - mrb_value *expanded_ptr = (mrb_value *)mrb_realloc(mrb, a->as.heap.ptr, sizeof(mrb_value)*capa); - - a->as.heap.aux.capa = capa; - a->as.heap.ptr = expanded_ptr; - } -} - -static void -ary_shrink_capa(mrb_state *mrb, struct RArray *a) -{ - - mrb_int capa; - - if (ARY_EMBED_P(a)) return; - - capa = a->as.heap.aux.capa; - if (capa < ARY_DEFAULT_LEN * 2) return; - if (capa <= a->as.heap.len * ARY_SHRINK_RATIO) return; - - do { - capa /= 2; - if (capa < ARY_DEFAULT_LEN) { - capa = ARY_DEFAULT_LEN; - break; - } - } while (capa > a->as.heap.len * ARY_SHRINK_RATIO); - - if (capa > a->as.heap.len && capa < a->as.heap.aux.capa) { - a->as.heap.aux.capa = capa; - a->as.heap.ptr = (mrb_value *)mrb_realloc(mrb, a->as.heap.ptr, sizeof(mrb_value)*capa); - } -} - -MRB_API mrb_value -mrb_ary_resize(mrb_state *mrb, mrb_value ary, mrb_int new_len) -{ - mrb_int old_len; - struct RArray *a = mrb_ary_ptr(ary); - - ary_modify(mrb, a); - old_len = RARRAY_LEN(ary); - if (old_len != new_len) { - ARY_SET_LEN(a, new_len); - if (new_len < old_len) { - ary_shrink_capa(mrb, a); - } - else { - ary_expand_capa(mrb, a, new_len); - ary_fill_with_nil(ARY_PTR(a) + old_len, new_len - old_len); - } - } - - return ary; -} - -static mrb_value -mrb_ary_s_create(mrb_state *mrb, mrb_value klass) -{ - mrb_value ary; - mrb_value *vals; - mrb_int len; - struct RArray *a; - - mrb_get_args(mrb, "*!", &vals, &len); - ary = mrb_ary_new_from_values(mrb, len, vals); - a = mrb_ary_ptr(ary); - a->c = mrb_class_ptr(klass); - - return ary; -} - -static void -ary_concat(mrb_state *mrb, struct RArray *a, struct RArray *a2) -{ - mrb_int len; - - if (ARY_LEN(a2) > ARY_MAX_SIZE - ARY_LEN(a)) { - mrb_raise(mrb, E_ARGUMENT_ERROR, "array size too big"); - } - len = ARY_LEN(a) + ARY_LEN(a2); - - ary_modify(mrb, a); - if (ARY_CAPA(a) < len) { - ary_expand_capa(mrb, a, len); - } - array_copy(ARY_PTR(a)+ARY_LEN(a), ARY_PTR(a2), ARY_LEN(a2)); - mrb_write_barrier(mrb, (struct RBasic*)a); - ARY_SET_LEN(a, len); -} - -MRB_API void -mrb_ary_concat(mrb_state *mrb, mrb_value self, mrb_value other) -{ - struct RArray *a2 = mrb_ary_ptr(other); - - ary_concat(mrb, mrb_ary_ptr(self), a2); -} - -static mrb_value -mrb_ary_concat_m(mrb_state *mrb, mrb_value self) -{ - mrb_value ary; - - mrb_get_args(mrb, "A", &ary); - mrb_ary_concat(mrb, self, ary); - return self; -} - -static mrb_value -mrb_ary_plus(mrb_state *mrb, mrb_value self) -{ - struct RArray *a1 = mrb_ary_ptr(self); - struct RArray *a2; - mrb_value *ptr; - mrb_int blen, len1; - - mrb_get_args(mrb, "a", &ptr, &blen); - if (ARY_MAX_SIZE - blen < ARY_LEN(a1)) { - mrb_raise(mrb, E_ARGUMENT_ERROR, "array size too big"); - } - len1 = ARY_LEN(a1); - a2 = ary_new_capa(mrb, len1 + blen); - array_copy(ARY_PTR(a2), ARY_PTR(a1), len1); - array_copy(ARY_PTR(a2) + len1, ptr, blen); - ARY_SET_LEN(a2, len1+blen); - - return mrb_obj_value(a2); -} - -static void -ary_replace(mrb_state *mrb, struct RArray *a, mrb_value *argv, mrb_int len) -{ - ary_modify(mrb, a); - if (ARY_CAPA(a) < len) - ary_expand_capa(mrb, a, len); - array_copy(ARY_PTR(a), argv, len); - mrb_write_barrier(mrb, (struct RBasic*)a); - ARY_SET_LEN(a, len); -} - -MRB_API void -mrb_ary_replace(mrb_state *mrb, mrb_value self, mrb_value other) -{ - struct RArray *a1 = mrb_ary_ptr(self); - struct RArray *a2 = mrb_ary_ptr(other); - - if (a1 != a2) { - ary_replace(mrb, a1, ARY_PTR(a2), ARY_LEN(a2)); - } -} - -static mrb_value -mrb_ary_replace_m(mrb_state *mrb, mrb_value self) -{ - mrb_value other; - - mrb_get_args(mrb, "A", &other); - mrb_ary_replace(mrb, self, other); - - return self; -} - -static mrb_value -mrb_ary_times(mrb_state *mrb, mrb_value self) -{ - struct RArray *a1 = mrb_ary_ptr(self); - struct RArray *a2; - mrb_value *ptr; - mrb_int times, len1; - - mrb_get_args(mrb, "i", ×); - if (times < 0) { - mrb_raise(mrb, E_ARGUMENT_ERROR, "negative argument"); - } - if (times == 0) return mrb_ary_new(mrb); - if (ARY_MAX_SIZE / times < ARY_LEN(a1)) { - mrb_raise(mrb, E_ARGUMENT_ERROR, "array size too big"); - } - len1 = ARY_LEN(a1); - a2 = ary_new_capa(mrb, len1 * times); - ARY_SET_LEN(a2, len1 * times); - ptr = ARY_PTR(a2); - while (times--) { - array_copy(ptr, ARY_PTR(a1), len1); - ptr += len1; - } - - return mrb_obj_value(a2); -} - -static mrb_value -mrb_ary_reverse_bang(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self); - mrb_int len = ARY_LEN(a); - - if (len > 1) { - mrb_value *p1, *p2; - - ary_modify(mrb, a); - p1 = ARY_PTR(a); - p2 = p1 + len - 1; - - while (p1 < p2) { - mrb_value tmp = *p1; - *p1++ = *p2; - *p2-- = tmp; - } - } - return self; -} - -static mrb_value -mrb_ary_reverse(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self), *b = ary_new_capa(mrb, ARY_LEN(a)); - mrb_int len = ARY_LEN(a); - - if (len > 0) { - mrb_value *p1, *p2, *e; - - p1 = ARY_PTR(a); - e = p1 + len; - p2 = ARY_PTR(b) + len - 1; - while (p1 < e) { - *p2-- = *p1++; - } - ARY_SET_LEN(b, len); - } - return mrb_obj_value(b); -} - -MRB_API void -mrb_ary_push(mrb_state *mrb, mrb_value ary, mrb_value elem) -{ - struct RArray *a = mrb_ary_ptr(ary); - mrb_int len = ARY_LEN(a); - - ary_modify(mrb, a); - if (len == ARY_CAPA(a)) - ary_expand_capa(mrb, a, len + 1); - ARY_PTR(a)[len] = elem; - ARY_SET_LEN(a, len+1); - mrb_field_write_barrier_value(mrb, (struct RBasic*)a, elem); -} - -static mrb_value -mrb_ary_push_m(mrb_state *mrb, mrb_value self) -{ - mrb_value *argv; - mrb_int len, len2, alen; - struct RArray *a; - - mrb_get_args(mrb, "*!", &argv, &alen); - a = mrb_ary_ptr(self); - ary_modify(mrb, a); - len = ARY_LEN(a); - len2 = len + alen; - if (ARY_CAPA(a) < len2) { - ary_expand_capa(mrb, a, len2); - } - array_copy(ARY_PTR(a)+len, argv, alen); - ARY_SET_LEN(a, len2); - mrb_write_barrier(mrb, (struct RBasic*)a); - - return self; -} - -MRB_API mrb_value -mrb_ary_pop(mrb_state *mrb, mrb_value ary) -{ - struct RArray *a = mrb_ary_ptr(ary); - mrb_int len = ARY_LEN(a); - - ary_modify_check(mrb, a); - if (len == 0) return mrb_nil_value(); - ARY_SET_LEN(a, len-1); - return ARY_PTR(a)[len-1]; -} - -#define ARY_SHIFT_SHARED_MIN 10 - -MRB_API mrb_value -mrb_ary_shift(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self); - mrb_int len = ARY_LEN(a); - mrb_value val; - - ary_modify_check(mrb, a); - if (len == 0) return mrb_nil_value(); - if (ARY_SHARED_P(a)) { - L_SHIFT: - val = a->as.heap.ptr[0]; - a->as.heap.ptr++; - a->as.heap.len--; - return val; - } - if (len > ARY_SHIFT_SHARED_MIN) { - ary_make_shared(mrb, a); - goto L_SHIFT; - } - else { - mrb_value *ptr = ARY_PTR(a); - mrb_int size = len; - - val = *ptr; - while (--size) { - *ptr = *(ptr+1); - ++ptr; - } - ARY_SET_LEN(a, len-1); - } - return val; -} - -/* self = [1,2,3] - item = 0 - self.unshift item - p self #=> [0, 1, 2, 3] */ -MRB_API mrb_value -mrb_ary_unshift(mrb_state *mrb, mrb_value self, mrb_value item) -{ - struct RArray *a = mrb_ary_ptr(self); - mrb_int len = ARY_LEN(a); - - if (ARY_SHARED_P(a) - && a->as.heap.aux.shared->refcnt == 1 /* shared only referenced from this array */ - && a->as.heap.ptr - a->as.heap.aux.shared->ptr >= 1) /* there's room for unshifted item */ { - a->as.heap.ptr--; - a->as.heap.ptr[0] = item; - } - else { - mrb_value *ptr; - - ary_modify(mrb, a); - if (ARY_CAPA(a) < len + 1) - ary_expand_capa(mrb, a, len + 1); - ptr = ARY_PTR(a); - value_move(ptr + 1, ptr, len); - ptr[0] = item; - } - ARY_SET_LEN(a, len+1); - mrb_field_write_barrier_value(mrb, (struct RBasic*)a, item); - - return self; -} - -static mrb_value -mrb_ary_unshift_m(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self); - mrb_value *vals, *ptr; - mrb_int alen, len; - - mrb_get_args(mrb, "*!", &vals, &alen); - if (alen == 0) { - ary_modify_check(mrb, a); - return self; - } - len = ARY_LEN(a); - if (alen > ARY_MAX_SIZE - len) { - mrb_raise(mrb, E_ARGUMENT_ERROR, "array size too big"); - } - if (ARY_SHARED_P(a) - && a->as.heap.aux.shared->refcnt == 1 /* shared only referenced from this array */ - && a->as.heap.ptr - a->as.heap.aux.shared->ptr >= alen) /* there's room for unshifted item */ { - ary_modify_check(mrb, a); - a->as.heap.ptr -= alen; - ptr = a->as.heap.ptr; - } - else { - ary_modify(mrb, a); - if (ARY_CAPA(a) < len + alen) - ary_expand_capa(mrb, a, len + alen); - ptr = ARY_PTR(a); - value_move(ptr + alen, ptr, len); - } - array_copy(ptr, vals, alen); - ARY_SET_LEN(a, len+alen); - while (alen--) { - mrb_field_write_barrier_value(mrb, (struct RBasic*)a, vals[alen]); - } - - return self; -} - -MRB_API mrb_value -mrb_ary_ref(mrb_state *mrb, mrb_value ary, mrb_int n) -{ - struct RArray *a = mrb_ary_ptr(ary); - mrb_int len = ARY_LEN(a); - - /* range check */ - if (n < 0) n += len; - if (n < 0 || len <= n) return mrb_nil_value(); - - return ARY_PTR(a)[n]; -} - -MRB_API void -mrb_ary_set(mrb_state *mrb, mrb_value ary, mrb_int n, mrb_value val) -{ - struct RArray *a = mrb_ary_ptr(ary); - mrb_int len = ARY_LEN(a); - - ary_modify(mrb, a); - /* range check */ - if (n < 0) { - n += len; - if (n < 0) { - mrb_raisef(mrb, E_INDEX_ERROR, "index %S out of array", mrb_fixnum_value(n - len)); - } - } - if (len <= n) { - if (ARY_CAPA(a) <= n) - ary_expand_capa(mrb, a, n + 1); - ary_fill_with_nil(ARY_PTR(a) + len, n + 1 - len); - ARY_SET_LEN(a, n+1); - } - - ARY_PTR(a)[n] = val; - mrb_field_write_barrier_value(mrb, (struct RBasic*)a, val); -} - -static struct RArray* -ary_dup(mrb_state *mrb, struct RArray *a) -{ - mrb_int len = ARY_LEN(a); - struct RArray *d = ary_new_capa(mrb, len); - - ary_replace(mrb, d, ARY_PTR(a), len); - return d; -} - -MRB_API mrb_value -mrb_ary_splice(mrb_state *mrb, mrb_value ary, mrb_int head, mrb_int len, mrb_value rpl) -{ - struct RArray *a = mrb_ary_ptr(ary); - mrb_int alen = ARY_LEN(a); - const mrb_value *argv; - mrb_int argc; - mrb_int tail; - - ary_modify(mrb, a); - - /* len check */ - if (len < 0) mrb_raisef(mrb, E_INDEX_ERROR, "negative length (%S)", mrb_fixnum_value(len)); - - /* range check */ - if (head < 0) { - head += alen; - if (head < 0) { - mrb_raise(mrb, E_INDEX_ERROR, "index is out of array"); - } - } - tail = head + len; - if (alen < len || alen < tail) { - len = alen - head; - } - - /* size check */ - if (mrb_array_p(rpl)) { - argc = RARRAY_LEN(rpl); - argv = RARRAY_PTR(rpl); - if (argv == ARY_PTR(a)) { - struct RArray *r; - - if (argc > 32767) { - mrb_raise(mrb, E_ARGUMENT_ERROR, "too big recursive splice"); - } - r = ary_dup(mrb, a); - argv = ARY_PTR(r); - } - } - else { - argc = 1; - argv = &rpl; - } - if (head >= alen) { - if (head > ARY_MAX_SIZE - argc) { - mrb_raisef(mrb, E_INDEX_ERROR, "index %S too big", mrb_fixnum_value(head)); - } - len = head + argc; - if (len > ARY_CAPA(a)) { - ary_expand_capa(mrb, a, head + argc); - } - ary_fill_with_nil(ARY_PTR(a) + alen, head - alen); - if (argc > 0) { - array_copy(ARY_PTR(a) + head, argv, argc); - } - ARY_SET_LEN(a, len); - } - else { - mrb_int newlen; - - if (alen - len > ARY_MAX_SIZE - argc) { - mrb_raisef(mrb, E_INDEX_ERROR, "index %S too big", mrb_fixnum_value(alen + argc - len)); - } - newlen = alen + argc - len; - if (newlen > ARY_CAPA(a)) { - ary_expand_capa(mrb, a, newlen); - } - - if (len != argc) { - mrb_value *ptr = ARY_PTR(a); - tail = head + len; - value_move(ptr + head + argc, ptr + tail, alen - tail); - ARY_SET_LEN(a, newlen); - } - if (argc > 0) { - value_move(ARY_PTR(a) + head, argv, argc); - } - } - mrb_write_barrier(mrb, (struct RBasic*)a); - return ary; -} - -void -mrb_ary_decref(mrb_state *mrb, mrb_shared_array *shared) -{ - shared->refcnt--; - if (shared->refcnt == 0) { - mrb_free(mrb, shared->ptr); - mrb_free(mrb, shared); - } -} - -static mrb_value -ary_subseq(mrb_state *mrb, struct RArray *a, mrb_int beg, mrb_int len) -{ - struct RArray *b; - - if (!ARY_SHARED_P(a) && len <= ARY_SHIFT_SHARED_MIN) { - return mrb_ary_new_from_values(mrb, len, ARY_PTR(a)+beg); - } - ary_make_shared(mrb, a); - b = (struct RArray*)mrb_obj_alloc(mrb, MRB_TT_ARRAY, mrb->array_class); - b->as.heap.ptr = a->as.heap.ptr + beg; - b->as.heap.len = len; - b->as.heap.aux.shared = a->as.heap.aux.shared; - b->as.heap.aux.shared->refcnt++; - ARY_SET_SHARED_FLAG(b); - - return mrb_obj_value(b); -} - -static mrb_int -aget_index(mrb_state *mrb, mrb_value index) -{ - if (mrb_fixnum_p(index)) { - return mrb_fixnum(index); - } - else if (mrb_float_p(index)) { - return (mrb_int)mrb_float(index); - } - else { - mrb_int i, argc; - mrb_value *argv; - - mrb_get_args(mrb, "i*!", &i, &argv, &argc); - return i; - } -} - -/* - * call-seq: - * ary[index] -> obj or nil - * ary[start, length] -> new_ary or nil - * ary[range] -> new_ary or nil - * ary.slice(index) -> obj or nil - * ary.slice(start, length) -> new_ary or nil - * ary.slice(range) -> new_ary or nil - * - * Element Reference --- Returns the element at +index+, or returns a - * subarray starting at the +start+ index and continuing for +length+ - * elements, or returns a subarray specified by +range+ of indices. - * - * Negative indices count backward from the end of the array (-1 is the last - * element). For +start+ and +range+ cases the starting index is just before - * an element. Additionally, an empty array is returned when the starting - * index for an element range is at the end of the array. - * - * Returns +nil+ if the index (or starting index) are out of range. - * - * a = [ "a", "b", "c", "d", "e" ] - * a[1] => "b" - * a[1,2] => ["b", "c"] - * a[1..-2] => ["b", "c", "d"] - * - */ - -static mrb_value -mrb_ary_aget(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self); - mrb_int i, len, alen = ARY_LEN(a); - mrb_value index; - - if (mrb_get_args(mrb, "o|i", &index, &len) == 1) { - switch (mrb_type(index)) { - /* a[n..m] */ - case MRB_TT_RANGE: - if (mrb_range_beg_len(mrb, index, &i, &len, alen, TRUE) == 1) { - return ary_subseq(mrb, a, i, len); - } - else { - return mrb_nil_value(); - } - case MRB_TT_FIXNUM: - return mrb_ary_ref(mrb, self, mrb_fixnum(index)); - default: - return mrb_ary_ref(mrb, self, aget_index(mrb, index)); - } - } - - i = aget_index(mrb, index); - if (i < 0) i += alen; - if (i < 0 || alen < i) return mrb_nil_value(); - if (len < 0) return mrb_nil_value(); - if (alen == i) return mrb_ary_new(mrb); - if (len > alen - i) len = alen - i; - - return ary_subseq(mrb, a, i, len); -} - -/* - * call-seq: - * ary[index] = obj -> obj - * ary[start, length] = obj or other_ary or nil -> obj or other_ary or nil - * ary[range] = obj or other_ary or nil -> obj or other_ary or nil - * - * Element Assignment --- Sets the element at +index+, or replaces a subarray - * from the +start+ index for +length+ elements, or replaces a subarray - * specified by the +range+ of indices. - * - * If indices are greater than the current capacity of the array, the array - * grows automatically. Elements are inserted into the array at +start+ if - * +length+ is zero. - * - * Negative indices will count backward from the end of the array. For - * +start+ and +range+ cases the starting index is just before an element. - * - * An IndexError is raised if a negative index points past the beginning of - * the array. - * - * See also Array#push, and Array#unshift. - * - * a = Array.new - * a[4] = "4"; #=> [nil, nil, nil, nil, "4"] - * a[0, 3] = [ 'a', 'b', 'c' ] #=> ["a", "b", "c", nil, "4"] - * a[1..2] = [ 1, 2 ] #=> ["a", 1, 2, nil, "4"] - * a[0, 2] = "?" #=> ["?", 2, nil, "4"] - * a[0..2] = "A" #=> ["A", "4"] - * a[-1] = "Z" #=> ["A", "Z"] - * a[1..-1] = nil #=> ["A", nil] - * a[1..-1] = [] #=> ["A"] - * a[0, 0] = [ 1, 2 ] #=> [1, 2, "A"] - * a[3, 0] = "B" #=> [1, 2, "A", "B"] - */ - -static mrb_value -mrb_ary_aset(mrb_state *mrb, mrb_value self) -{ - mrb_value v1, v2, v3; - mrb_int i, len; - - mrb_ary_modify(mrb, mrb_ary_ptr(self)); - if (mrb_get_args(mrb, "oo|o", &v1, &v2, &v3) == 2) { - /* a[n..m] = v */ - switch (mrb_range_beg_len(mrb, v1, &i, &len, RARRAY_LEN(self), FALSE)) { - case 0: /* not range */ - mrb_ary_set(mrb, self, aget_index(mrb, v1), v2); - break; - case 1: /* range */ - mrb_ary_splice(mrb, self, i, len, v2); - break; - case 2: /* out of range */ - mrb_raisef(mrb, E_RANGE_ERROR, "%S out of range", v1); - break; - } - return v2; - } - - /* a[n,m] = v */ - mrb_ary_splice(mrb, self, aget_index(mrb, v1), aget_index(mrb, v2), v3); - return v3; -} - -static mrb_value -mrb_ary_delete_at(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self); - mrb_int index; - mrb_value val; - mrb_value *ptr; - mrb_int len, alen = ARY_LEN(a); - - mrb_get_args(mrb, "i", &index); - if (index < 0) index += alen; - if (index < 0 || alen <= index) return mrb_nil_value(); - - ary_modify(mrb, a); - ptr = ARY_PTR(a); - val = ptr[index]; - - ptr += index; - len = alen - index; - while (--len) { - *ptr = *(ptr+1); - ++ptr; - } - ARY_SET_LEN(a, alen-1); - - ary_shrink_capa(mrb, a); - - return val; -} - -static mrb_value -mrb_ary_first(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self); - mrb_int size, alen = ARY_LEN(a); - - if (mrb->c->ci->argc == 0) { - return (alen > 0)? ARY_PTR(a)[0]: mrb_nil_value(); - } - mrb_get_args(mrb, "|i", &size); - if (size < 0) { - mrb_raise(mrb, E_ARGUMENT_ERROR, "negative array size"); - } - - if (size > alen) size = alen; - if (ARY_SHARED_P(a)) { - return ary_subseq(mrb, a, 0, size); - } - return mrb_ary_new_from_values(mrb, size, ARY_PTR(a)); -} - -static mrb_value -mrb_ary_last(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self); - mrb_int size, alen = ARY_LEN(a); - - if (mrb_get_args(mrb, "|i", &size) == 0) - return (alen > 0)? ARY_PTR(a)[alen - 1]: mrb_nil_value(); - - if (size < 0) { - mrb_raise(mrb, E_ARGUMENT_ERROR, "negative array size"); - } - if (size > alen) size = alen; - if (ARY_SHARED_P(a) || size > ARY_DEFAULT_LEN) { - return ary_subseq(mrb, a, alen - size, size); - } - return mrb_ary_new_from_values(mrb, size, ARY_PTR(a) + alen - size); -} - -static mrb_value -mrb_ary_index_m(mrb_state *mrb, mrb_value self) -{ - mrb_value obj; - mrb_int i; - - mrb_get_args(mrb, "o", &obj); - for (i = 0; i < RARRAY_LEN(self); i++) { - if (mrb_equal(mrb, RARRAY_PTR(self)[i], obj)) { - return mrb_fixnum_value(i); - } - } - return mrb_nil_value(); -} - -static mrb_value -mrb_ary_rindex_m(mrb_state *mrb, mrb_value self) -{ - mrb_value obj; - mrb_int i, len; - - mrb_get_args(mrb, "o", &obj); - for (i = RARRAY_LEN(self) - 1; i >= 0; i--) { - if (mrb_equal(mrb, RARRAY_PTR(self)[i], obj)) { - return mrb_fixnum_value(i); - } - if (i > (len = RARRAY_LEN(self))) { - i = len; - } - } - return mrb_nil_value(); -} - -MRB_API mrb_value -mrb_ary_splat(mrb_state *mrb, mrb_value v) -{ - mrb_value a, recv_class; - - if (mrb_array_p(v)) { - return v; - } - - if (!mrb_respond_to(mrb, v, mrb_intern_lit(mrb, "to_a"))) { - return mrb_ary_new_from_values(mrb, 1, &v); - } - - a = mrb_funcall(mrb, v, "to_a", 0); - if (mrb_array_p(a)) { - return a; - } - else if (mrb_nil_p(a)) { - return mrb_ary_new_from_values(mrb, 1, &v); - } - else { - recv_class = mrb_obj_value(mrb_obj_class(mrb, v)); - mrb_raisef(mrb, E_TYPE_ERROR, "can't convert %S to Array (%S#to_a gives %S)", - recv_class, - recv_class, - mrb_obj_value(mrb_obj_class(mrb, a)) - ); - /* not reached */ - return mrb_undef_value(); - } -} - -static mrb_value -mrb_ary_size(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self); - - return mrb_fixnum_value(ARY_LEN(a)); -} - -MRB_API mrb_value -mrb_ary_clear(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self); - - ary_modify(mrb, a); - if (ARY_SHARED_P(a)) { - mrb_ary_decref(mrb, a->as.heap.aux.shared); - ARY_UNSET_SHARED_FLAG(a); - } - else if (!ARY_EMBED_P(a)){ - mrb_free(mrb, a->as.heap.ptr); - } - ARY_SET_EMBED_LEN(a, 0); - - return self; -} - -static mrb_value -mrb_ary_empty_p(mrb_state *mrb, mrb_value self) -{ - struct RArray *a = mrb_ary_ptr(self); - - return mrb_bool_value(ARY_LEN(a) == 0); -} - -MRB_API mrb_value -mrb_check_array_type(mrb_state *mrb, mrb_value ary) -{ - return mrb_check_convert_type(mrb, ary, MRB_TT_ARRAY, "Array", "to_ary"); -} - -MRB_API mrb_value -mrb_ary_entry(mrb_value ary, mrb_int offset) -{ - if (offset < 0) { - offset += RARRAY_LEN(ary); - } - if (offset < 0 || RARRAY_LEN(ary) <= offset) { - return mrb_nil_value(); - } - return RARRAY_PTR(ary)[offset]; -} - -static mrb_value -join_ary(mrb_state *mrb, mrb_value ary, mrb_value sep, mrb_value list) -{ - mrb_int i; - mrb_value result, val, tmp; - - /* check recursive */ - for (i=0; i<RARRAY_LEN(list); i++) { - if (mrb_obj_equal(mrb, ary, RARRAY_PTR(list)[i])) { - mrb_raise(mrb, E_ARGUMENT_ERROR, "recursive array join"); - } - } - - mrb_ary_push(mrb, list, ary); - - result = mrb_str_new_capa(mrb, 64); - - for (i=0; i<RARRAY_LEN(ary); i++) { - if (i > 0 && !mrb_nil_p(sep)) { - mrb_str_cat_str(mrb, result, sep); - } - - val = RARRAY_PTR(ary)[i]; - switch (mrb_type(val)) { - case MRB_TT_ARRAY: - ary_join: - val = join_ary(mrb, val, sep, list); - /* fall through */ - - case MRB_TT_STRING: - str_join: - mrb_str_cat_str(mrb, result, val); - break; - - default: - if (!mrb_immediate_p(val)) { - tmp = mrb_check_string_type(mrb, val); - if (!mrb_nil_p(tmp)) { - val = tmp; - goto str_join; - } - tmp = mrb_check_convert_type(mrb, val, MRB_TT_ARRAY, "Array", "to_ary"); - if (!mrb_nil_p(tmp)) { - val = tmp; - goto ary_join; - } - } - val = mrb_obj_as_string(mrb, val); - goto str_join; - } - } - - mrb_ary_pop(mrb, list); - - return result; -} - -MRB_API mrb_value -mrb_ary_join(mrb_state *mrb, mrb_value ary, mrb_value sep) -{ - if (!mrb_nil_p(sep)) { - sep = mrb_obj_as_string(mrb, sep); - } - return join_ary(mrb, ary, sep, mrb_ary_new(mrb)); -} - -/* - * call-seq: - * ary.join(sep="") -> str - * - * Returns a string created by converting each element of the array to - * a string, separated by <i>sep</i>. - * - * [ "a", "b", "c" ].join #=> "abc" - * [ "a", "b", "c" ].join("-") #=> "a-b-c" - */ - -static mrb_value -mrb_ary_join_m(mrb_state *mrb, mrb_value ary) -{ - mrb_value sep = mrb_nil_value(); - - mrb_get_args(mrb, "|S!", &sep); - return mrb_ary_join(mrb, ary, sep); -} - -static mrb_value -mrb_ary_eq(mrb_state *mrb, mrb_value ary1) -{ - mrb_value ary2; - - mrb_get_args(mrb, "o", &ary2); - if (mrb_obj_equal(mrb, ary1, ary2)) return mrb_true_value(); - if (!mrb_array_p(ary2)) { - return mrb_false_value(); - } - if (RARRAY_LEN(ary1) != RARRAY_LEN(ary2)) return mrb_false_value(); - - return ary2; -} - -static mrb_value -mrb_ary_cmp(mrb_state *mrb, mrb_value ary1) -{ - mrb_value ary2; - - mrb_get_args(mrb, "o", &ary2); - if (mrb_obj_equal(mrb, ary1, ary2)) return mrb_fixnum_value(0); - if (!mrb_array_p(ary2)) { - return mrb_nil_value(); - } - - return ary2; -} - -void -mrb_init_array(mrb_state *mrb) -{ - struct RClass *a; - - mrb->array_class = a = mrb_define_class(mrb, "Array", mrb->object_class); /* 15.2.12 */ - MRB_SET_INSTANCE_TT(a, MRB_TT_ARRAY); - - mrb_define_class_method(mrb, a, "[]", mrb_ary_s_create, MRB_ARGS_ANY()); /* 15.2.12.4.1 */ - - mrb_define_method(mrb, a, "+", mrb_ary_plus, MRB_ARGS_REQ(1)); /* 15.2.12.5.1 */ - mrb_define_method(mrb, a, "*", mrb_ary_times, MRB_ARGS_REQ(1)); /* 15.2.12.5.2 */ - mrb_define_method(mrb, a, "<<", mrb_ary_push_m, MRB_ARGS_REQ(1)); /* 15.2.12.5.3 */ - mrb_define_method(mrb, a, "[]", mrb_ary_aget, MRB_ARGS_ANY()); /* 15.2.12.5.4 */ - mrb_define_method(mrb, a, "[]=", mrb_ary_aset, MRB_ARGS_ANY()); /* 15.2.12.5.5 */ - mrb_define_method(mrb, a, "clear", mrb_ary_clear, MRB_ARGS_NONE()); /* 15.2.12.5.6 */ - mrb_define_method(mrb, a, "concat", mrb_ary_concat_m, MRB_ARGS_REQ(1)); /* 15.2.12.5.8 */ - mrb_define_method(mrb, a, "delete_at", mrb_ary_delete_at, MRB_ARGS_REQ(1)); /* 15.2.12.5.9 */ - mrb_define_method(mrb, a, "empty?", mrb_ary_empty_p, MRB_ARGS_NONE()); /* 15.2.12.5.12 */ - mrb_define_method(mrb, a, "first", mrb_ary_first, MRB_ARGS_OPT(1)); /* 15.2.12.5.13 */ - mrb_define_method(mrb, a, "index", mrb_ary_index_m, MRB_ARGS_REQ(1)); /* 15.2.12.5.14 */ - mrb_define_method(mrb, a, "initialize_copy", mrb_ary_replace_m, MRB_ARGS_REQ(1)); /* 15.2.12.5.16 */ - mrb_define_method(mrb, a, "join", mrb_ary_join_m, MRB_ARGS_ANY()); /* 15.2.12.5.17 */ - mrb_define_method(mrb, a, "last", mrb_ary_last, MRB_ARGS_ANY()); /* 15.2.12.5.18 */ - mrb_define_method(mrb, a, "length", mrb_ary_size, MRB_ARGS_NONE()); /* 15.2.12.5.19 */ - mrb_define_method(mrb, a, "pop", mrb_ary_pop, MRB_ARGS_NONE()); /* 15.2.12.5.21 */ - mrb_define_method(mrb, a, "push", mrb_ary_push_m, MRB_ARGS_ANY()); /* 15.2.12.5.22 */ - mrb_define_method(mrb, a, "append", mrb_ary_push_m, MRB_ARGS_ANY()); - mrb_define_method(mrb, a, "replace", mrb_ary_replace_m, MRB_ARGS_REQ(1)); /* 15.2.12.5.23 */ - mrb_define_method(mrb, a, "reverse", mrb_ary_reverse, MRB_ARGS_NONE()); /* 15.2.12.5.24 */ - mrb_define_method(mrb, a, "reverse!", mrb_ary_reverse_bang, MRB_ARGS_NONE()); /* 15.2.12.5.25 */ - mrb_define_method(mrb, a, "rindex", mrb_ary_rindex_m, MRB_ARGS_REQ(1)); /* 15.2.12.5.26 */ - mrb_define_method(mrb, a, "shift", mrb_ary_shift, MRB_ARGS_NONE()); /* 15.2.12.5.27 */ - mrb_define_method(mrb, a, "size", mrb_ary_size, MRB_ARGS_NONE()); /* 15.2.12.5.28 */ - mrb_define_method(mrb, a, "slice", mrb_ary_aget, MRB_ARGS_ANY()); /* 15.2.12.5.29 */ - mrb_define_method(mrb, a, "unshift", mrb_ary_unshift_m, MRB_ARGS_ANY()); /* 15.2.12.5.30 */ - mrb_define_method(mrb, a, "prepend", mrb_ary_unshift_m, MRB_ARGS_ANY()); - - mrb_define_method(mrb, a, "__ary_eq", mrb_ary_eq, MRB_ARGS_REQ(1)); - mrb_define_method(mrb, a, "__ary_cmp", mrb_ary_cmp, MRB_ARGS_REQ(1)); - mrb_define_method(mrb, a, "__ary_index", mrb_ary_index_m, MRB_ARGS_REQ(1)); /* kept for mruby-array-ext */ -} |