Revert "Replaced accessors of `Struct` with `invokebuiltin`"

This reverts commit 19cabe8b09d92d033c244f32ff622b8e513375f1,
which didn't support tool/lib/iseq_loader_checker.rb.

1 files changed, 7 insertions, 36 deletions

diff --git a/struct.c b/struct.c
index 41349f71f5..be742fbee5 100644
--- a/struct.c
+++ b/struct.c
@@ -20,7 +20,6 @@
 #include "internal/symbol.h"
 #include "transient_heap.h"
 #include "vm_core.h"
-#include "builtin.h"
 
 /* only for struct[:field] access */
 enum {
@@ -28,8 +27,8 @@ enum {
     AREF_HASH_THRESHOLD = 10
 };
 
-const rb_iseq_t *rb_method_for_self_aref(VALUE name, VALUE arg, const struct rb_builtin_function *func);
-const rb_iseq_t *rb_method_for_self_aset(VALUE name, VALUE arg, const struct rb_builtin_function *func);
+const rb_iseq_t *rb_method_for_self_aref(VALUE name, VALUE arg, rb_insn_func_t func);
+const rb_iseq_t *rb_method_for_self_aset(VALUE name, VALUE arg, rb_insn_func_t func);
 
 VALUE rb_cStruct;
 static ID id_members, id_back_members, id_keyword_init;
@@ -289,41 +288,11 @@ new_struct(VALUE name, VALUE super)
     return rb_define_class_id_under(super, id, super);
 }
 
-NORETURN(static void invalid_struct_pos(VALUE s, VALUE idx));
-
-static inline long
-struct_pos_num(VALUE s, VALUE idx)
-{
-    long i = NUM2INT(idx);
-    if (i < 0 || i >= RSTRUCT_LEN(s)) invalid_struct_pos(s, idx);
-    return i;
-}
-
-static VALUE
-opt_struct_aref(rb_execution_context_t *ec, VALUE self, VALUE idx)
-{
-    long i = struct_pos_num(self, idx);
-    return RSTRUCT_GET(self, i);
-}
-
-static VALUE
-opt_struct_aset(rb_execution_context_t *ec, VALUE self, VALUE val, VALUE idx)
-{
-    long i = struct_pos_num(self, idx);
-    rb_struct_modify(self);
-    RSTRUCT_SET(self, i, val);
-    return val;
-}
-
-static const struct rb_builtin_function struct_aref_builtin =
-    RB_BUILTIN_FUNCTION(0, struct_aref, opt_struct_aref, 1);
-static const struct rb_builtin_function struct_aset_builtin =
-    RB_BUILTIN_FUNCTION(1, struct_aref, opt_struct_aset, 2);
-
 static void
 define_aref_method(VALUE nstr, VALUE name, VALUE off)
 {
-    const rb_iseq_t *iseq = rb_method_for_self_aref(name, off, &struct_aref_builtin);
+    rb_control_frame_t *FUNC_FASTCALL(rb_vm_opt_struct_aref)(rb_execution_context_t *, rb_control_frame_t *);
+    const rb_iseq_t *iseq = rb_method_for_self_aref(name, off, rb_vm_opt_struct_aref);
 
     rb_add_method_iseq(nstr, SYM2ID(name), iseq, NULL, METHOD_VISI_PUBLIC);
 }
@@ -331,7 +300,8 @@ define_aref_method(VALUE nstr, VALUE name, VALUE off)
 static void
 define_aset_method(VALUE nstr, VALUE name, VALUE off)
 {
-    const rb_iseq_t *iseq = rb_method_for_self_aset(name, off, &struct_aset_builtin);
+    rb_control_frame_t *FUNC_FASTCALL(rb_vm_opt_struct_aset)(rb_execution_context_t *, rb_control_frame_t *);
+    const rb_iseq_t *iseq = rb_method_for_self_aset(name, off, rb_vm_opt_struct_aset);
 
     rb_add_method_iseq(nstr, SYM2ID(name), iseq, NULL, METHOD_VISI_PUBLIC);
 }
@@ -1053,6 +1023,7 @@ rb_struct_pos(VALUE s, VALUE *name)
     }
 }
 
+NORETURN(static void invalid_struct_pos(VALUE s, VALUE idx));
 static void
 invalid_struct_pos(VALUE s, VALUE idx)
 {