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-rw-r--r--mrbgems/mruby-struct/src/struct.c803
1 files changed, 803 insertions, 0 deletions
diff --git a/mrbgems/mruby-struct/src/struct.c b/mrbgems/mruby-struct/src/struct.c
new file mode 100644
index 000000000..5b7d0ab5d
--- /dev/null
+++ b/mrbgems/mruby-struct/src/struct.c
@@ -0,0 +1,803 @@
+/*
+** struct.c - Struct class
+**
+** See Copyright Notice in mruby.h
+*/
+
+#include <string.h>
+#include <stdarg.h>
+#include "mruby.h"
+#include "mruby/array.h"
+#include "mruby/string.h"
+#include "mruby/class.h"
+#include "mruby/data.h"
+#include "mruby/variable.h"
+
+struct RStruct {
+ struct RBasic basic;
+ mrb_value values;
+};
+
+static void
+rstruct_free(mrb_state *mrb, void *ptr)
+{
+ mrb_free(mrb, ptr);
+}
+
+static struct mrb_data_type mrb_struct_type = { "mrb_struct", rstruct_free };
+
+#define RSTRUCT(st) ((struct RStruct*)(DATA_PTR(st)))
+#define RSTRUCT_LEN(st) ((int)(RARRAY_LEN(RSTRUCT(st)->values)))
+#define RSTRUCT_PTR(st) (RARRAY_PTR(RSTRUCT(st)->values))
+
+static struct RClass *
+struct_class(mrb_state *mrb)
+{
+ return mrb_class_get(mrb, "Struct");
+}
+
+static inline mrb_value
+struct_ivar_get(mrb_state *mrb, mrb_value c, mrb_sym id)
+{
+ struct RClass* kclass;
+ struct RClass* sclass = struct_class(mrb);
+
+ mrb_value ans;
+ for (;;) {
+ ans = mrb_iv_get(mrb, c, id);
+ if (!mrb_nil_p(ans)) return ans;
+ kclass = RCLASS_SUPER(c);
+ if (kclass == 0 || kclass == sclass)
+ return mrb_nil_value();
+ c = mrb_obj_value(kclass);
+ }
+}
+
+mrb_value
+mrb_struct_iv_get(mrb_state *mrb, mrb_value c, const char *name)
+{
+ return struct_ivar_get(mrb, c, mrb_intern(mrb, name));
+}
+
+mrb_value
+mrb_struct_s_members(mrb_state *mrb, mrb_value klass)
+{
+ mrb_value members = struct_ivar_get(mrb, klass, mrb_intern(mrb, "__members__"));
+
+ if (mrb_nil_p(members)) {
+ mrb_raise(mrb, E_TYPE_ERROR, "uninitialized struct");
+ }
+ if (!mrb_array_p(members)) {
+ mrb_raise(mrb, E_TYPE_ERROR, "corrupted struct");
+ }
+ return members;
+}
+
+mrb_value
+mrb_struct_members(mrb_state *mrb, mrb_value s)
+{
+ mrb_value members = mrb_struct_s_members(mrb, mrb_obj_value(mrb_obj_class(mrb, s)));
+ if (!strcmp(mrb_class_name(mrb, mrb_obj_class(mrb, s)), "Struct")) {
+ if (RSTRUCT_LEN(s) != RARRAY_LEN(members)) {
+ mrb_raisef(mrb, E_TYPE_ERROR, "struct size differs (%ld required %ld given)",
+ RARRAY_LEN(members), RSTRUCT_LEN(s));
+ }
+ }
+ return members;
+}
+
+static mrb_value
+mrb_struct_s_members_m(mrb_state *mrb, mrb_value klass)
+{
+ mrb_value members, ary;
+ mrb_value *p, *pend;
+
+ members = mrb_struct_s_members(mrb, klass);
+ ary = mrb_ary_new_capa(mrb, RARRAY_LEN(members));
+ p = RARRAY_PTR(members); pend = p + RARRAY_LEN(members);
+ while (p < pend) {
+ mrb_ary_push(mrb, ary, *p);
+ p++;
+ }
+
+ return ary;
+}
+
+static inline void
+struct_copy(mrb_value *dst, const mrb_value *src, size_t size)
+{
+ size_t i;
+
+ for (i = 0; i < size; i++) {
+ dst[i] = src[i];
+ }
+}
+
+/* 15.2.18.4.6 */
+/*
+ * call-seq:
+ * struct.members -> array
+ *
+ * Returns an array of strings representing the names of the instance
+ * variables.
+ *
+ * Customer = Struct.new(:name, :address, :zip)
+ * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
+ * joe.members #=> [:name, :address, :zip]
+ */
+
+static mrb_value
+mrb_struct_members_m(mrb_state *mrb, mrb_value obj)
+{
+ return mrb_struct_s_members_m(mrb, mrb_obj_value(mrb_obj_class(mrb, obj)));
+}
+
+mrb_value
+mrb_struct_getmember(mrb_state *mrb, mrb_value obj, mrb_sym id)
+{
+ mrb_value members, slot, *ptr, *ptr_members;
+ long i, len;
+
+ ptr = RSTRUCT_PTR(obj);
+ members = mrb_struct_members(mrb, obj);
+ ptr_members = RARRAY_PTR(members);
+ slot = mrb_symbol_value(id);
+ len = RARRAY_LEN(members);
+ for (i=0; i<len; i++) {
+ if (mrb_obj_equal(mrb, ptr_members[i], slot)) {
+ return ptr[i];
+ }
+ }
+ mrb_raisef(mrb, E_NAME_ERROR, "%s is not struct member", mrb_sym2name(mrb, id));
+ return mrb_nil_value(); /* not reached */
+}
+
+static mrb_value
+mrb_struct_ref(mrb_state *mrb, mrb_value obj)
+{
+ return mrb_struct_getmember(mrb, obj, mrb->ci->mid);
+}
+
+static mrb_value mrb_struct_ref0(mrb_state* mrb, mrb_value obj) {return RSTRUCT_PTR(obj)[0];}
+static mrb_value mrb_struct_ref1(mrb_state* mrb, mrb_value obj) {return RSTRUCT_PTR(obj)[1];}
+static mrb_value mrb_struct_ref2(mrb_state* mrb, mrb_value obj) {return RSTRUCT_PTR(obj)[2];}
+static mrb_value mrb_struct_ref3(mrb_state* mrb, mrb_value obj) {return RSTRUCT_PTR(obj)[3];}
+static mrb_value mrb_struct_ref4(mrb_state* mrb, mrb_value obj) {return RSTRUCT_PTR(obj)[4];}
+static mrb_value mrb_struct_ref5(mrb_state* mrb, mrb_value obj) {return RSTRUCT_PTR(obj)[5];}
+static mrb_value mrb_struct_ref6(mrb_state* mrb, mrb_value obj) {return RSTRUCT_PTR(obj)[6];}
+static mrb_value mrb_struct_ref7(mrb_state* mrb, mrb_value obj) {return RSTRUCT_PTR(obj)[7];}
+static mrb_value mrb_struct_ref8(mrb_state* mrb, mrb_value obj) {return RSTRUCT_PTR(obj)[8];}
+static mrb_value mrb_struct_ref9(mrb_state* mrb, mrb_value obj) {return RSTRUCT_PTR(obj)[9];}
+
+#define numberof(array) (int)(sizeof(array) / sizeof((array)[0]))
+#define N_REF_FUNC numberof(ref_func)
+
+static mrb_value (*const ref_func[])(mrb_state*, mrb_value) = {
+ mrb_struct_ref0,
+ mrb_struct_ref1,
+ mrb_struct_ref2,
+ mrb_struct_ref3,
+ mrb_struct_ref4,
+ mrb_struct_ref5,
+ mrb_struct_ref6,
+ mrb_struct_ref7,
+ mrb_struct_ref8,
+ mrb_struct_ref9,
+};
+
+mrb_sym
+mrb_id_attrset(mrb_state *mrb, mrb_sym id)
+{
+ const char *name;
+ char *buf;
+ int len;
+ mrb_sym mid;
+
+ name = mrb_sym2name_len(mrb, id, &len);
+ buf = (char *)mrb_malloc(mrb, len+2);
+ memcpy(buf, name, len);
+ buf[len] = '=';
+ buf[len+1] = '\0';
+
+ mid = mrb_intern2(mrb, buf, len+1);
+ mrb_free(mrb, buf);
+ return mid;
+}
+
+static mrb_value
+mrb_struct_set(mrb_state *mrb, mrb_value obj, mrb_value val)
+{
+ const char *name;
+ int i, len;
+ mrb_sym mid;
+ mrb_value members, slot, *ptr, *ptr_members;
+
+ /* get base id */
+ name = mrb_sym2name_len(mrb, mrb->ci->mid, &len);
+ mid = mrb_intern2(mrb, name, len-1); /* omit last "=" */
+
+ members = mrb_struct_members(mrb, obj);
+ ptr_members = RARRAY_PTR(members);
+ len = RARRAY_LEN(members);
+ ptr = RSTRUCT_PTR(obj);
+ for (i=0; i<len; i++) {
+ slot = ptr_members[i];
+ if (mrb_symbol(slot) == mid) {
+ return ptr[i] = val;
+ }
+ }
+
+ mrb_raisef(mrb, E_NAME_ERROR, "`%s' is not a struct member",
+ mrb_sym2name(mrb, mid));
+ return mrb_nil_value(); /* not reached */
+}
+
+static mrb_value
+mrb_struct_set_m(mrb_state *mrb, mrb_value obj)
+{
+ mrb_value val;
+
+ mrb_get_args(mrb, "o", &val);
+ return mrb_struct_set(mrb, obj, val);
+}
+
+#define is_notop_id(id) (id)//((id)>tLAST_TOKEN)
+#define is_local_id(id) (is_notop_id(id))//&&((id)&ID_SCOPE_MASK)==ID_LOCAL)
+int
+mrb_is_local_id(mrb_sym id)
+{
+ return is_local_id(id);
+}
+
+#define is_const_id(id) (is_notop_id(id))//&&((id)&ID_SCOPE_MASK)==ID_CONST)
+int
+mrb_is_const_id(mrb_sym id)
+{
+ return is_const_id(id);
+}
+
+static mrb_value
+make_struct(mrb_state *mrb, mrb_value name, mrb_value members, struct RClass * klass)
+{
+ mrb_value nstr, *ptr_members;
+ mrb_sym id;
+ long i, len;
+ struct RClass *c;
+
+ if (mrb_nil_p(name)) {
+ c = mrb_class_new(mrb, klass);
+ }
+ else {
+ /* old style: should we warn? */
+ name = mrb_str_to_str(mrb, name);
+ id = mrb_to_id(mrb, name);
+ if (!mrb_is_const_id(id)) {
+ mrb_raisef(mrb, E_NAME_ERROR, "identifier %s needs to be constant", mrb_string_value_ptr(mrb, name));
+ }
+ if (mrb_const_defined_at(mrb, klass, id)) {
+ mrb_warn("redefining constant Struct::%s", mrb_string_value_ptr(mrb, name));
+ //?rb_mod_remove_const(klass, mrb_sym2name(mrb, id));
+ }
+ c = mrb_define_class_under(mrb, klass, RSTRING_PTR(name), klass);
+ }
+ //MRB_SET_INSTANCE_TT(c, MRB_TT_DATA);
+ nstr = mrb_obj_value(c);
+ mrb_iv_set(mrb, nstr, mrb_intern(mrb, "__members__"), members);
+
+ mrb_define_class_method(mrb, c, "new", mrb_instance_new, ARGS_ANY());
+ mrb_define_class_method(mrb, c, "[]", mrb_instance_new, ARGS_ANY());
+ mrb_define_class_method(mrb, c, "members", mrb_struct_s_members_m, ARGS_NONE());
+ //RSTRUCT(nstr)->basic.c->super = c->c;
+ ptr_members = RARRAY_PTR(members);
+ len = RARRAY_LEN(members);
+ for (i=0; i< len; i++) {
+ mrb_sym id = mrb_symbol(ptr_members[i]);
+ if (mrb_is_local_id(id) || mrb_is_const_id(id)) {
+ if (i < N_REF_FUNC) {
+ mrb_define_method_id(mrb, c, id, ref_func[i], ARGS_NONE());
+ }
+ else {
+ mrb_define_method_id(mrb, c, id, mrb_struct_ref, ARGS_NONE());
+ }
+ mrb_define_method_id(mrb, c, mrb_id_attrset(mrb, id), mrb_struct_set_m, ARGS_REQ(1));
+ }
+ }
+
+ return nstr;
+}
+
+mrb_value
+mrb_struct_define(mrb_state *mrb, const char *name, ...)
+{
+ va_list ar;
+ mrb_value nm, ary;
+ char *mem;
+
+ if (!name) nm = mrb_nil_value();
+ else nm = mrb_str_new2(mrb, name);
+ ary = mrb_ary_new(mrb);
+
+ va_start(ar, name);
+ while ((mem = va_arg(ar, char*)) != 0) {
+ mrb_sym slot = mrb_intern(mrb, mem);
+ mrb_ary_push(mrb, ary, mrb_symbol_value(slot));
+ }
+ va_end(ar);
+
+ return make_struct(mrb, nm, ary, struct_class(mrb));
+}
+
+/* 15.2.18.3.1 */
+/*
+ * call-seq:
+ * Struct.new( [aString] [, aSym]+> ) -> StructClass
+ * StructClass.new(arg, ...) -> obj
+ * StructClass[arg, ...] -> obj
+ *
+ * Creates a new class, named by <i>aString</i>, containing accessor
+ * methods for the given symbols. If the name <i>aString</i> is
+ * omitted, an anonymous structure class will be created. Otherwise,
+ * the name of this struct will appear as a constant in class
+ * <code>Struct</code>, so it must be unique for all
+ * <code>Struct</code>s in the system and should start with a capital
+ * letter. Assigning a structure class to a constant effectively gives
+ * the class the name of the constant.
+ *
+ * <code>Struct::new</code> returns a new <code>Class</code> object,
+ * which can then be used to create specific instances of the new
+ * structure. The number of actual parameters must be
+ * less than or equal to the number of attributes defined for this
+ * class; unset parameters default to <code>nil</code>. Passing too many
+ * parameters will raise an <code>ArgumentError</code>.
+ *
+ * The remaining methods listed in this section (class and instance)
+ * are defined for this generated class.
+ *
+ * # Create a structure with a name in Struct
+ * Struct.new("Customer", :name, :address) #=> Struct::Customer
+ * Struct::Customer.new("Dave", "123 Main") #=> #<struct Struct::Customer name="Dave", address="123 Main">
+ *
+ * # Create a structure named by its constant
+ * Customer = Struct.new(:name, :address) #=> Customer
+ * Customer.new("Dave", "123 Main") #=> #<struct Customer name="Dave", address="123 Main">
+ */
+static mrb_value
+mrb_struct_s_def(mrb_state *mrb, mrb_value klass)
+{
+ mrb_value name, rest;
+ mrb_value *pargv;
+ int argcnt;
+ long i;
+ mrb_value b, st;
+ mrb_sym id;
+ mrb_value *argv;
+ int argc;
+
+ name = mrb_nil_value();
+ rest = mrb_nil_value();
+ mrb_get_args(mrb, "*&", &argv, &argc, &b);
+ if (argc == 0) { /* special case to avoid crash */
+ rest = mrb_ary_new(mrb);
+ }
+ else {
+ if (argc > 0) name = argv[0];
+ if (argc > 1) rest = argv[1];
+ if (mrb_array_p(rest)) {
+ if (!mrb_nil_p(name) && mrb_symbol_p(name)) {
+ /* 1stArgument:symbol -> name=nil rest=argv[0]-[n] */
+ mrb_ary_unshift(mrb, rest, name);
+ name = mrb_nil_value();
+ }
+ }
+ else {
+ pargv = &argv[1];
+ argcnt = argc-1;
+ if (!mrb_nil_p(name) && mrb_symbol_p(name)) {
+ /* 1stArgument:symbol -> name=nil rest=argv[0]-[n] */
+ name = mrb_nil_value();
+ pargv = &argv[0];
+ argcnt++;
+ }
+ rest = mrb_ary_new_from_values(mrb, argcnt, pargv);
+ }
+ for (i=0; i<RARRAY_LEN(rest); i++) {
+ id = mrb_to_id(mrb, RARRAY_PTR(rest)[i]);
+ RARRAY_PTR(rest)[i] = mrb_symbol_value(id);
+ }
+ }
+ st = make_struct(mrb, name, rest, struct_class(mrb));
+ if (!mrb_nil_p(b)) {
+ mrb_funcall(mrb, b, "call", 1, &st);
+ }
+
+ return st;
+}
+
+static int
+num_members(mrb_state *mrb, struct RClass *klass)
+{
+ mrb_value members;
+ members = struct_ivar_get(mrb, mrb_obj_value(klass), mrb_intern(mrb, "__members__"));
+ if (!mrb_array_p(members)) {
+ mrb_raise(mrb, E_TYPE_ERROR, "broken members");
+ }
+ return RARRAY_LEN(members);
+}
+
+/* 15.2.18.4.8 */
+/*
+ */
+static mrb_value
+mrb_struct_initialize_withArg(mrb_state *mrb, int argc, mrb_value *argv, mrb_value self)
+{
+ struct RClass *klass = mrb_obj_class(mrb, self);
+ int i, n;
+ struct RStruct *st;
+
+ n = num_members(mrb, klass);
+ if (n < argc) {
+ mrb_raise(mrb, E_ARGUMENT_ERROR, "struct size differs");
+ }
+ st = (struct RStruct *) mrb_malloc(mrb, sizeof(struct RStruct));
+ DATA_PTR(self) = st;
+ DATA_TYPE(self) = &mrb_struct_type;
+ st->values = mrb_ary_new_capa(mrb, n);
+ for (i = argc; i < n; i++) {
+ mrb_ary_set(mrb, st->values, i, mrb_nil_value());
+ }
+ struct_copy(RARRAY_PTR(st->values), argv, argc);
+ mrb_iv_set(mrb, self, mrb_intern(mrb, "__values__"), st->values);
+
+ return self;
+}
+
+static mrb_value
+mrb_struct_initialize_m(mrb_state *mrb, /*int argc, mrb_value *argv,*/ mrb_value self)
+{
+ mrb_value *argv;
+ int argc;
+
+ mrb_get_args(mrb, "*", &argv, &argc);
+ return mrb_struct_initialize_withArg(mrb, argc, argv, self);
+}
+
+mrb_value
+mrb_struct_initialize(mrb_state *mrb, mrb_value self, mrb_value values)
+{
+ return mrb_struct_initialize_withArg(mrb, RARRAY_LEN(values), RARRAY_PTR(values), self);
+}
+
+static mrb_value
+inspect_struct(mrb_state *mrb, mrb_value s, int recur)
+{
+ const char *cn = mrb_class_name(mrb, mrb_obj_class(mrb, s));
+ mrb_value members, str = mrb_str_new(mrb, "#<struct ", 9);
+ mrb_value *ptr, *ptr_members;
+ long i, len;
+
+ if (cn) {
+ mrb_str_append(mrb, str, mrb_str_new_cstr(mrb, cn));
+ }
+ if (recur) {
+ return mrb_str_cat2(mrb, str, ":...>");
+ }
+
+ members = mrb_struct_members(mrb, s);
+ ptr_members = RARRAY_PTR(members);
+ ptr = RSTRUCT_PTR(s);
+ len = RSTRUCT_LEN(s);
+ for (i=0; i<len; i++) {
+ mrb_value slot;
+ mrb_sym id;
+
+ if (i > 0) {
+ mrb_str_cat2(mrb, str, ", ");
+ }
+ else if (cn) {
+ mrb_str_cat2(mrb, str, " ");
+ }
+ slot = ptr_members[i];
+ id = mrb_symbol(slot);
+ if (mrb_is_local_id(id) || mrb_is_const_id(id)) {
+ const char *name;
+ int len;
+
+ name = mrb_sym2name_len(mrb, id, &len);
+ mrb_str_append(mrb, str, mrb_str_new(mrb, name, len));
+ }
+ else {
+ mrb_str_append(mrb, str, mrb_inspect(mrb, slot));
+ }
+ mrb_str_cat2(mrb, str, "=");
+ mrb_str_append(mrb, str, mrb_inspect(mrb, ptr[i]));
+ }
+ mrb_str_cat2(mrb, str, ">");
+
+ return str;
+}
+
+/*
+ * call-seq:
+ * struct.to_s -> string
+ * struct.inspect -> string
+ *
+ * Describe the contents of this struct in a string.
+ */
+static mrb_value
+mrb_struct_inspect(mrb_state *mrb, mrb_value s)
+{
+ return inspect_struct(mrb, s, 0);
+}
+
+/* 15.2.18.4.9 */
+/* :nodoc: */
+mrb_value
+mrb_struct_init_copy(mrb_state *mrb, mrb_value copy)
+{
+ mrb_value s;
+
+ mrb_get_args(mrb, "o", &s);
+
+ if (mrb_obj_equal(mrb, copy, s)) return copy;
+ if (!mrb_obj_is_instance_of(mrb, s, mrb_obj_class(mrb, copy))) {
+ mrb_raise(mrb, E_TYPE_ERROR, "wrong argument class");
+ }
+ if (RSTRUCT_LEN(copy) != RSTRUCT_LEN(s)) {
+ mrb_raise(mrb, E_TYPE_ERROR, "struct size mismatch");
+ }
+ struct_copy(RSTRUCT_PTR(copy), RSTRUCT_PTR(s), RSTRUCT_LEN(copy));
+
+ return copy;
+}
+
+static mrb_value
+mrb_struct_aref_id(mrb_state *mrb, mrb_value s, mrb_sym id)
+{
+ mrb_value *ptr, members, *ptr_members;
+ long i, len;
+
+ ptr = RSTRUCT_PTR(s);
+ members = mrb_struct_members(mrb, s);
+ ptr_members = RARRAY_PTR(members);
+ len = RARRAY_LEN(members);
+ for (i=0; i<len; i++) {
+ if (mrb_symbol(ptr_members[i]) == id) {
+ return ptr[i];
+ }
+ }
+ mrb_raisef(mrb, E_NAME_ERROR, "no member '%s' in struct", mrb_sym2name(mrb, id));
+ return mrb_nil_value(); /* not reached */
+}
+
+/* 15.2.18.4.2 */
+/*
+ * call-seq:
+ * struct[symbol] -> anObject
+ * struct[fixnum] -> anObject
+ *
+ * Attribute Reference---Returns the value of the instance variable
+ * named by <i>symbol</i>, or indexed (0..length-1) by
+ * <i>fixnum</i>. Will raise <code>NameError</code> if the named
+ * variable does not exist, or <code>IndexError</code> if the index is
+ * out of range.
+ *
+ * Customer = Struct.new(:name, :address, :zip)
+ * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
+ *
+ * joe["name"] #=> "Joe Smith"
+ * joe[:name] #=> "Joe Smith"
+ * joe[0] #=> "Joe Smith"
+ */
+mrb_value
+mrb_struct_aref_n(mrb_state *mrb, mrb_value s, mrb_value idx)
+{
+ long i;
+
+ if (mrb_string_p(idx) || mrb_symbol_p(idx)) {
+ return mrb_struct_aref_id(mrb, s, mrb_to_id(mrb, idx));
+ }
+
+ i = mrb_fixnum(idx);
+ if (i < 0) i = RSTRUCT_LEN(s) + i;
+ if (i < 0)
+ mrb_raisef(mrb, E_INDEX_ERROR, "offset %ld too small for struct(size:%ld)",
+ i, RSTRUCT_LEN(s));
+ if (RSTRUCT_LEN(s) <= i)
+ mrb_raisef(mrb, E_INDEX_ERROR, "offset %ld too large for struct(size:%ld)",
+ i, RSTRUCT_LEN(s));
+ return RSTRUCT_PTR(s)[i];
+}
+
+mrb_value
+mrb_struct_aref(mrb_state *mrb, mrb_value s)
+{
+ mrb_value idx;
+
+ mrb_get_args(mrb, "o", &idx);
+ return mrb_struct_aref_n(mrb, s, idx);
+}
+
+static mrb_value
+mrb_struct_aset_id(mrb_state *mrb, mrb_value s, mrb_sym id, mrb_value val)
+{
+ mrb_value members, *ptr, *ptr_members;
+ long i, len;
+
+ members = mrb_struct_members(mrb, s);
+ len = RARRAY_LEN(members);
+ if (RSTRUCT_LEN(s) != len) {
+ mrb_raisef(mrb, E_TYPE_ERROR, "struct size differs (%ld required %ld given)",
+ len, RSTRUCT_LEN(s));
+ }
+ ptr = RSTRUCT_PTR(s);
+ ptr_members = RARRAY_PTR(members);
+ for (i=0; i<len; i++) {
+ if (mrb_symbol(ptr_members[i]) == id) {
+ ptr[i] = val;
+ return val;
+ }
+ }
+ mrb_raisef(mrb, E_NAME_ERROR, "no member '%s' in struct", mrb_sym2name(mrb, id));
+ return val; /* not reach */
+}
+
+/* 15.2.18.4.3 */
+/*
+ * call-seq:
+ * struct[symbol] = obj -> obj
+ * struct[fixnum] = obj -> obj
+ *
+ * Attribute Assignment---Assigns to the instance variable named by
+ * <i>symbol</i> or <i>fixnum</i> the value <i>obj</i> and
+ * returns it. Will raise a <code>NameError</code> if the named
+ * variable does not exist, or an <code>IndexError</code> if the index
+ * is out of range.
+ *
+ * Customer = Struct.new(:name, :address, :zip)
+ * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
+ *
+ * joe["name"] = "Luke"
+ * joe[:zip] = "90210"
+ *
+ * joe.name #=> "Luke"
+ * joe.zip #=> "90210"
+ */
+
+mrb_value
+mrb_struct_aset(mrb_state *mrb, mrb_value s)
+{
+ long i;
+ mrb_value idx;
+ mrb_value val;
+
+ mrb_get_args(mrb, "oo", &idx, &val);
+
+ if (mrb_string_p(idx) || mrb_symbol_p(idx)) {
+ return mrb_struct_aset_id(mrb, s, mrb_to_id(mrb, idx), val);
+ }
+
+ i = mrb_fixnum(idx);
+ if (i < 0) i = RSTRUCT_LEN(s) + i;
+ if (i < 0) {
+ mrb_raisef(mrb, E_INDEX_ERROR, "offset %ld too small for struct(size:%ld)",
+ i, RSTRUCT_LEN(s));
+ }
+ if (RSTRUCT_LEN(s) <= i) {
+ mrb_raisef(mrb, E_INDEX_ERROR, "offset %ld too large for struct(size:%ld)",
+ i, RSTRUCT_LEN(s));
+ }
+ return RSTRUCT_PTR(s)[i] = val;
+}
+
+/* 15.2.18.4.1 */
+/*
+ * call-seq:
+ * struct == other_struct -> true or false
+ *
+ * Equality---Returns <code>true</code> if <i>other_struct</i> is
+ * equal to this one: they must be of the same class as generated by
+ * <code>Struct::new</code>, and the values of all instance variables
+ * must be equal (according to <code>Object#==</code>).
+ *
+ * Customer = Struct.new(:name, :address, :zip)
+ * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
+ * joejr = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
+ * jane = Customer.new("Jane Doe", "456 Elm, Anytown NC", 12345)
+ * joe == joejr #=> true
+ * joe == jane #=> false
+ */
+
+static mrb_value
+mrb_struct_equal(mrb_state *mrb, mrb_value s)
+{
+ mrb_value s2;
+ mrb_value *ptr, *ptr2;
+ long i, len;
+
+ mrb_get_args(mrb, "o", &s2);
+ if (mrb_obj_equal(mrb, s, s2)) return mrb_true_value();
+ if (!strcmp(mrb_class_name(mrb, mrb_obj_class(mrb, s)), "Struct")) return mrb_false_value();
+ if (mrb_obj_class(mrb, s) != mrb_obj_class(mrb, s2)) return mrb_false_value();
+ if (RSTRUCT_LEN(s) != RSTRUCT_LEN(s2)) {
+ mrb_bug("inconsistent struct"); /* should never happen */
+ }
+ ptr = RSTRUCT_PTR(s);
+ ptr2 = RSTRUCT_PTR(s2);
+ len = RSTRUCT_LEN(s);
+ for (i=0; i<len; i++) {
+ if (!mrb_equal(mrb, ptr[i], ptr2[i])) return mrb_false_value();
+ }
+ return mrb_true_value();
+}
+
+/* 15.2.18.4.12(x) */
+/*
+ * code-seq:
+ * struct.eql?(other) -> true or false
+ *
+ * Two structures are equal if they are the same object, or if all their
+ * fields are equal (using <code>eql?</code>).
+ */
+static mrb_value
+mrb_struct_eql(mrb_state *mrb, mrb_value s)
+{
+ mrb_value s2;
+ mrb_value *ptr, *ptr2;
+ long i, len;
+
+ mrb_get_args(mrb, "o", &s2);
+ if (mrb_obj_equal(mrb, s, s2)) return mrb_true_value();
+ if (strcmp(mrb_class_name(mrb, mrb_obj_class(mrb, s2)), "Struct")) return mrb_false_value();
+ if (mrb_obj_class(mrb, s) != mrb_obj_class(mrb, s2)) return mrb_false_value();
+ if (RSTRUCT_LEN(s) != RSTRUCT_LEN(s2)) {
+ mrb_bug("inconsistent struct"); /* should never happen */
+ }
+
+ ptr = RSTRUCT_PTR(s);
+ ptr2 = RSTRUCT_PTR(s2);
+ len = RSTRUCT_LEN(s);
+ for (i=0; i<len; i++) {
+ if (!mrb_eql(mrb, ptr[i], ptr2[i])) return mrb_false_value();
+ }
+ return mrb_true_value();
+}
+
+/*
+ * A <code>Struct</code> is a convenient way to bundle a number of
+ * attributes together, using accessor methods, without having to write
+ * an explicit class.
+ *
+ * The <code>Struct</code> class is a generator of specific classes,
+ * each one of which is defined to hold a set of variables and their
+ * accessors. In these examples, we'll call the generated class
+ * ``<i>Customer</i>Class,'' and we'll show an example instance of that
+ * class as ``<i>Customer</i>Inst.''
+ *
+ * In the descriptions that follow, the parameter <i>symbol</i> refers
+ * to a symbol, which is either a quoted string or a
+ * <code>Symbol</code> (such as <code>:name</code>).
+ */
+void
+mrb_mruby_struct_gem_init(mrb_state* mrb)
+{
+ struct RClass *st;
+ st = mrb_define_class(mrb, "Struct", mrb->object_class);
+
+ mrb_define_class_method(mrb, st, "new", mrb_struct_s_def, ARGS_ANY()); /* 15.2.18.3.1 */
+
+ mrb_define_method(mrb, st, "==", mrb_struct_equal, ARGS_REQ(1)); /* 15.2.18.4.1 */
+ mrb_define_method(mrb, st, "[]", mrb_struct_aref, ARGS_REQ(1)); /* 15.2.18.4.2 */
+ mrb_define_method(mrb, st, "[]=", mrb_struct_aset, ARGS_REQ(2)); /* 15.2.18.4.3 */
+ mrb_define_method(mrb, st, "members", mrb_struct_members_m, ARGS_NONE()); /* 15.2.18.4.6 */
+ mrb_define_method(mrb, st, "initialize", mrb_struct_initialize_m,ARGS_ANY()); /* 15.2.18.4.8 */
+ mrb_define_method(mrb, st, "initialize_copy", mrb_struct_init_copy, ARGS_REQ(1)); /* 15.2.18.4.9 */
+ mrb_define_method(mrb, st, "inspect", mrb_struct_inspect, ARGS_NONE()); /* 15.2.18.4.10(x) */
+ mrb_define_alias(mrb, st, "to_s", "inspect"); /* 15.2.18.4.11(x) */
+ mrb_define_method(mrb, st, "eql?", mrb_struct_eql, ARGS_REQ(1)); /* 15.2.18.4.12(x) */
+
+}
+
+void
+mrb_mruby_struct_gem_final(mrb_state* mrb)
+{
+}
generated by cgit v1.2.3 (git 2.39.1) at 2026-04-15 07:25:05 +0000