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-rw-r--r--src/struct.c824
1 files changed, 824 insertions, 0 deletions
diff --git a/src/struct.c b/src/struct.c
new file mode 100644
index 000000000..9af6e2ee4
--- /dev/null
+++ b/src/struct.c
@@ -0,0 +1,824 @@
+/**********************************************************************
+
+ struct.c -
+
+ $Author: marcandre $
+ created at: Tue Mar 22 18:44:30 JST 1995
+
+ Copyright (C) 1993-2007 Yukihiro Matsumoto
+
+**********************************************************************/
+
+#include "mruby.h"
+#include <string.h>
+#include "error.h"
+#include "mruby/struct.h"
+#include "mruby/array.h"
+#include <stdarg.h>
+//#include "defines.h"
+
+#ifdef INCLUDE_REGEXP
+#include "encoding.h"
+#endif
+mrb_sym rb_frame_this_func(mrb_state *mrb);
+mrb_sym mrb_frame_callee(mrb_state *mrb);
+mrb_value mrb_exec_recursive_paired(mrb_state *mrb, mrb_value (*func) (mrb_state *, mrb_value, mrb_value, int),
+ mrb_value obj, mrb_value paired_obj, void* arg);
+
+#include "mruby/numeric.h"
+#include "mruby/hash.h"
+#include "mruby/string.h"
+#include "mruby/class.h"
+#include "variable.h"
+#include "mruby/range.h"
+#include "error.h"
+//#include "defines.h"
+#define mrb_long2int(n) ((int)(n))
+
+
+static mrb_value struct_alloc(mrb_state *mrb, mrb_value);
+
+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 (;;) {
+ //if (mrb_ivar_defined(c, id))
+ // return mrb_iv_get(mrb, c, id);
+ 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_type(members) != MRB_TT_ARRAY) {
+ 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 (mrb_type(s) == MRB_TT_STRUCT) {
+ if (RSTRUCT_LEN(s) != RARRAY_LEN(members)) {
+ mrb_raise(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));//mrb_ary_new2(RARRAY_LEN(members));
+ p = RARRAY_PTR(members); pend = p + RARRAY_LEN(members);
+ while (p < pend) {
+ mrb_ary_push(mrb, ary, *p);
+ p++;
+ }
+
+ return ary;
+}
+
+/* 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_str_new_cstr(mrb, mrb_sym2name(mrb, id));
+ len = RARRAY_LEN(members);
+ for (i=0; i<len; i++) {
+ if (mrb_obj_equal(mrb, ptr_members[i], slot)) {
+ return ptr[i];
+ }
+ }
+ mrb_name_error(mrb, id, "%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, rb_frame_this_func(mrb));
+ return mrb_nil_value();
+}
+
+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,
+};
+
+static void
+mrb_struct_modify(mrb_value s)
+{
+ //if (OBJ_FROZEN(s)) mrb_error_frozen("Struct");
+}
+
+mrb_sym
+mrb_id_attrset(mrb_sym id)
+{
+ //id &= ~ID_SCOPE_MASK;
+ //id |= ID_ATTRSET;
+ return id;
+}
+
+static mrb_value
+mrb_struct_set(mrb_state *mrb, mrb_value obj, mrb_value val)
+{
+ mrb_value members, slot, *ptr, *ptr_members;
+ long i, len;
+
+ members = mrb_struct_members(mrb, obj);
+ ptr_members = RARRAY_PTR(members);
+ len = RARRAY_LEN(members);
+ mrb_struct_modify(obj);
+ ptr = RSTRUCT_PTR(obj);
+ for (i=0; i<len; i++) {
+ slot = ptr_members[i];
+ if (mrb_id_attrset(SYM2ID(slot)) == 0/*rb_frame_this_func(mrb)*/) {
+ return ptr[i] = val;
+ }
+ }
+ mrb_name_error(mrb, 0/*rb_frame_this_func(mrb)*/, "`%s' is not a struct member",
+ mrb_sym2name(mrb, 0/*rb_frame_this_func(mrb)*/));
+ return mrb_nil_value(); /* not reached */
+}
+
+#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;
+
+ //OBJ_FREEZE(members);
+ if (mrb_nil_p(name)) {
+ c = mrb_class_new(mrb, klass);
+ //mrb_make_metaclass(nstr, RBASIC(klass)->c);
+ //mrb_class_inherited(klass, nstr);
+ }
+ 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_name_error(id, "identifier %s needs to be constant", StringValuePtr(name));
+ mrb_name_error(mrb, id, "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", StringValuePtr(name));
+ 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_STRUCT);
+ nstr = mrb_obj_value(c);
+ mrb_iv_set(mrb, nstr, mrb_intern(mrb, "__members__"), members);
+
+ mrb_define_class_method(mrb, c, "new", mrb_class_new_instance_m, ARGS_ANY());
+ mrb_define_class_method(mrb, c, "[]", mrb_class_new_instance_m, 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 = SYM2ID(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, (mrb_func_t)ref_func[i], 0);
+ }
+ else {
+ mrb_define_method_id(mrb, c, id, mrb_struct_ref, 0);
+ }
+ mrb_define_method_id(mrb, c, mrb_id_attrset(id), (mrb_func_t)mrb_struct_set, 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_str_new_cstr(mrb, mrb_sym2name(mrb, 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, "&*", &b, &argv, &argc);
+ if (argc > 0) name = argv[0];
+ if (argc > 1) rest = argv[1];
+ //mrb_scan_args(argc, argv, "1*", &name, &rest);
+ if (mrb_type(rest) == MRB_TT_ARRAY) {
+ if (!mrb_nil_p(name) && SYMBOL_P(name)) {
+ /* 1stArgument:symbol -> name=nil rest=argv[0]-[n] */
+ mrb_ary_unshift(mrb, rest, name);
+ name = mrb_nil_value();
+ }
+ for (i=0; i<RARRAY_LEN(rest); i++) {
+ id = mrb_to_id(mrb, RARRAY_PTR(rest)[i]);
+ RARRAY_PTR(rest)[i] = mrb_str_new_cstr(mrb, mrb_sym2name(mrb, id));
+ }
+ }
+ else {
+ pargv = &argv[1];
+ argcnt = argc-1;
+ if (!mrb_nil_p(name) && SYMBOL_P(name)) {
+ /* 1stArgument:symbol -> name=nil rest=argv[0]-[n] */
+ //mrb_ary_unshift(mrb, rest, name);
+ name = mrb_nil_value();
+ pargv = &argv[0];
+ argcnt++;
+ }
+ rest = mrb_ary_new_from_values(mrb, pargv, argcnt);
+ }
+ st = make_struct(mrb, name, rest, struct_class(mrb));
+ if (!mrb_nil_p(b)) {
+ mrb_funcall(mrb, b, "call", 1, &st);
+ }
+
+ return st;
+}
+
+static long
+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_type(members) != MRB_TT_ARRAY) {
+ 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);
+ long n;
+ struct RStruct *st;
+
+ mrb_struct_modify(self);
+ n = num_members(mrb, klass);
+ if (n < argc) {
+ mrb_raise(mrb, E_ARGUMENT_ERROR, "struct size differs");
+ }
+ st = RSTRUCT(self);
+ st->ptr = malloc(sizeof(mrb_value)*argc);
+ st->len = n;
+ memcpy(st->ptr, argv, sizeof(mrb_value)*argc);
+ //if (n > argc) {
+ // mrb_mem_clear(RSTRUCT_PTR(self)+argc, n-argc);
+ //}
+ 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/*INT*/(values), RARRAY_PTR(values), self);
+}
+
+mrb_value
+mrb_struct_alloc(mrb_state *mrb, mrb_value klass, mrb_value values)
+{
+ return mrb_class_new_instance(mrb, RARRAY_LEN(values), RARRAY_PTR(values), mrb_class(mrb, klass));
+}
+
+mrb_value
+mrb_struct_new(mrb_state *mrb, struct RClass *klass, ...)
+{
+ mrb_value tmpargs[N_REF_FUNC], *mem = tmpargs;
+ int size, i;
+ va_list args;
+
+ size = mrb_long2int(num_members(mrb, klass));
+ if (size > numberof(tmpargs)) {
+ tmpargs[0] = mrb_ary_tmp_new(mrb, size);
+ mem = RARRAY_PTR(tmpargs[0]);
+ }
+ va_start(args, klass);
+ for (i=0; i<size; i++) {
+ mem[i] = va_arg(args, mrb_value);
+ }
+ va_end(args);
+
+ return mrb_class_new_instance(mrb, size, mem, klass);
+}
+
+static mrb_value
+inspect_struct(mrb_state *mrb, mrb_value s, mrb_value dummy, int recur)
+{
+ const char *cn = mrb_class_name(mrb, mrb_obj_class(mrb, s));
+ mrb_value members, str = mrb_str_new2(mrb, "#<struct ");
+ 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 = SYM2ID(slot);
+ if (mrb_is_local_id(id) || mrb_is_const_id(id)) {
+ //mrb_str_append(str, mrb_id2str(id));
+ mrb_str_append(mrb, str, mrb_str_new_cstr(mrb, mrb_sym2name(mrb, id)));
+ }
+ 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, ">");
+ //OBJ_INFECT(str, s);
+
+ 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, 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;
+ //mrb_check_frozen(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");
+ }
+ memcpy(RSTRUCT_PTR(copy), RSTRUCT_PTR(s), sizeof(mrb_value)*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 (SYM2ID(ptr_members[i]) == id) {
+ return ptr[i];
+ }
+ }
+ mrb_name_error(mrb, id, "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_type(idx) == MRB_TT_STRING || mrb_type(idx) == MRB_TT_SYMBOL) {
+ 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_raise(mrb, E_INDEX_ERROR, "offset %ld too small for struct(size:%ld)",
+ i, RSTRUCT_LEN(s));
+ if (RSTRUCT_LEN(s) <= i)
+ mrb_raise(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);
+ mrb_struct_modify(s);
+ if (RSTRUCT_LEN(s) != len) {
+ mrb_raise(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 (SYM2ID(ptr_members[i]) == id) {
+ ptr[i] = val;
+ return val;
+ }
+ }
+ mrb_name_error(mrb, id, "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_type(idx) == MRB_TT_STRING || mrb_type(idx) == MRB_TT_SYMBOL) {
+ 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_raise(mrb, E_INDEX_ERROR, "offset %ld too small for struct(size:%ld)",
+ i, RSTRUCT_LEN(s));
+ }
+ if (RSTRUCT_LEN(s) <= i) {
+ mrb_raise(mrb, E_INDEX_ERROR, "offset %ld too large for struct(size:%ld)",
+ i, RSTRUCT_LEN(s));
+ }
+ mrb_struct_modify(s);
+ return RSTRUCT_PTR(s)[i] = val;
+}
+
+static mrb_value
+recursive_equal(mrb_state *mrb, mrb_value s, mrb_value s2, int recur)
+{
+ mrb_value *ptr, *ptr2;
+ long i, len;
+
+ if (recur) return mrb_true_value(); /* Subtle! */
+ 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();
+}
+
+/* 15.2.18.4.1 */
+/*
+ * 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_get_args(mrb, "o", &s2);
+ if (mrb_obj_equal(mrb, s, s2)) return mrb_true_value();
+ if (mrb_type(s2) != MRB_TT_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 */
+ }
+
+ return mrb_exec_recursive_paired(mrb, recursive_equal, s, s2, (void*)0);
+}
+
+static mrb_value
+recursive_eql(mrb_state *mrb, mrb_value s, mrb_value s2, int recur)
+{
+ mrb_value *ptr, *ptr2;
+ long i, len;
+
+ if (recur) return mrb_true_value(); /* Subtle! */
+ 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();
+}
+
+/* 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_get_args(mrb, "o", &s2);
+ if (mrb_obj_equal(mrb, s, s2)) return mrb_true_value();
+ if (mrb_type(s2) != MRB_TT_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 */
+ }
+
+ return mrb_exec_recursive_paired(mrb, recursive_eql, s, s2, (void*)0);
+}
+
+/*
+ * 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_init_struct(mrb_state *mrb)
+{
+ struct RClass *st;
+ st = mrb_define_class(mrb, "Struct", mrb->object_class);
+ //mrb_include_module(mrb_cStruct, rb_mEnumerable);
+
+ //mrb_undef_alloc_func(mrb_cStruct);
+ 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) */
+
+}
generated by cgit v1.2.3 (git 2.39.1) at 2026-04-15 01:59:43 +0000