【新增】添加原版luajit版本v2.1代码

thirdPart/luajit/src/lj_obj.c

@@ -0,0 +1,51 @@
+/*
+** Miscellaneous object handling.
+** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h
+*/
+
+#define lj_obj_c
+#define LUA_CORE
+
+#include "lj_obj.h"
+
+/* Object type names. */
+LJ_DATADEF const char *const lj_obj_typename[] = {  /* ORDER LUA_T */
+  "no value", "nil", "boolean", "userdata", "number", "string",
+  "table", "function", "userdata", "thread", "proto", "cdata"
+};
+
+LJ_DATADEF const char *const lj_obj_itypename[] = {  /* ORDER LJ_T */
+  "nil", "boolean", "boolean", "userdata", "string", "upval", "thread",
+  "proto", "function", "trace", "cdata", "table", "userdata", "number"
+};
+
+/* Compare two objects without calling metamethods. */
+int LJ_FASTCALL lj_obj_equal(cTValue *o1, cTValue *o2)
+{
+  if (itype(o1) == itype(o2)) {
+    if (tvispri(o1))
+      return 1;
+    if (!tvisnum(o1))
+      return gcrefeq(o1->gcr, o2->gcr);
+  } else if (!tvisnumber(o1) || !tvisnumber(o2)) {
+    return 0;
+  }
+  return numberVnum(o1) == numberVnum(o2);
+}
+
+/* Return pointer to object or its object data. */
+const void * LJ_FASTCALL lj_obj_ptr(global_State *g, cTValue *o)
+{
+  UNUSED(g);
+  if (tvisudata(o))
+    return uddata(udataV(o));
+  else if (tvislightud(o))
+    return lightudV(g, o);
+  else if (LJ_HASFFI && tviscdata(o))
+    return cdataptr(cdataV(o));
+  else if (tvisgcv(o))
+    return gcV(o);
+  else
+    return NULL;
+}
+