From 9fdf73bc9a6b4c6afbfff1d8181fface6b1c6761 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 28 Aug 2000 14:57:04 -0300
Subject: first version for new API

---
 lref.c | 118 -----------------------------------------------------------------
 1 file changed, 118 deletions(-)
 delete mode 100644 lref.c

(limited to 'lref.c')

diff --git a/lref.c b/lref.c
deleted file mode 100644
index c3fc57af..00000000
--- a/lref.c
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
-** $Id: lref.c,v 1.17 2000/08/09 19:16:57 roberto Exp roberto $
-** reference mechanism
-** See Copyright Notice in lua.h
-*/
-
-
-#include "lua.h"
-
-#include "lapi.h"
-#include "ldo.h"
-#include "lmem.h"
-#include "lref.h"
-#include "lstate.h"
-
-
-int lua_ref (lua_State *L,  int lock) {
-  int ref;
-  luaA_checkCargs(L, 1);
-  if (ttype(L->top-1) == TAG_NIL)
-    ref = LUA_REFNIL;
-  else {
-    if (L->refFree != NONEXT) {  /* is there a free place? */
-      ref = L->refFree;
-      L->refFree = L->refArray[ref].st;
-    }
-    else {  /* no more free places */
-      luaM_growvector(L, L->refArray, L->refSize, 1, struct Ref,
-                      "reference table overflow", MAX_INT);
-      ref = L->refSize++;
-    }
-    L->refArray[ref].o = *(L->top-1);
-    L->refArray[ref].st = lock ? LOCK : HOLD;
-  }
-  L->top--;
-  return ref;
-}
-
-
-void lua_unref (lua_State *L, int ref) {
-  if (ref >= 0) {
-    if (ref >= L->refSize || L->refArray[ref].st >= 0)
-      lua_error(L, "Lua API error - "
-                   "invalid argument for function `lua_unref'");
-    L->refArray[ref].st = L->refFree;
-    L->refFree = ref;
-  }
-}
-
-
-int lua_pushref (lua_State *L, int ref) {
-  if (ref == LUA_REFNIL)
-    ttype(L->top) = TAG_NIL;
-  else if (0 <= ref && ref < L->refSize &&
-          (L->refArray[ref].st == LOCK || L->refArray[ref].st == HOLD))
-    *L->top = L->refArray[ref].o;
-  else
-    return 0;
-  incr_top;
-  return 1;
-}
-
-
-void lua_beginblock (lua_State *L) {
-  luaM_growvector(L, L->Cblocks, L->numCblocks, 1, struct C_Lua_Stack,
-                  "too many nested blocks", L->stacksize);
-  L->Cblocks[L->numCblocks] = L->Cstack;
-  L->numCblocks++;
-}
-
-
-void lua_endblock (lua_State *L) {
-  if (L->numCblocks <= 0)
-    lua_error(L, "Lua API error - no block to end");
-  --L->numCblocks;
-  L->Cstack = L->Cblocks[L->numCblocks];
-  L->top = L->Cstack.base;
-}
-
-
-
-
-
-
-static int hasmark (const TObject *o) {
-  /* valid only for locked objects */
-  switch (o->ttype) {
-    case TAG_STRING: case TAG_USERDATA:
-      return tsvalue(o)->marked;
-    case TAG_TABLE:
-      return ismarked(hvalue(o));
-    case TAG_LCLOSURE:  case TAG_CCLOSURE:
-      return ismarked(clvalue(o)->mark);
-    default:  /* number */
-      return 1;
-  }
-}
-
-
-/* for internal debugging only; check if a link of free refs is valid */
-#define VALIDLINK(L, st,n)	(NONEXT <= (st) && (st) < (n))
-
-void luaR_invalidaterefs (lua_State *L) {
-  int n = L->refSize;
-  int i;
-  for (i=0; i<n; i++) {
-    struct Ref *r = &L->refArray[i];
-    if (r->st == HOLD && !hasmark(&r->o))
-      r->st = COLLECTED;
-    LUA_ASSERT((r->st == LOCK && hasmark(&r->o)) ||
-                r->st == COLLECTED ||
-                r->st == NONEXT ||
-               (r->st < n && VALIDLINK(L, L->refArray[r->st].st, n)),
-               "inconsistent ref table");
-  }
-  LUA_ASSERT(VALIDLINK(L, L->refFree, n), "inconsistent ref table");
-}
-
-- 
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