X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FSymbolTableListTraits.h;h=91a4eb99ff0d368c489c7b0d9ff50829b93bf08a;hb=d8c5ec6aece5732c766bd7d773ff75976d364168;hp=969c03fc55029cc63ebbfa3be432a52edc5f23c1;hpb=9769ab22265b313171d201b5928688524a01bd87;p=oota-llvm.git

diff --git a/include/llvm/SymbolTableListTraits.h b/include/llvm/SymbolTableListTraits.h
index 969c03fc550..91a4eb99ff0 100644
--- a/include/llvm/SymbolTableListTraits.h
+++ b/include/llvm/SymbolTableListTraits.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -25,53 +25,53 @@
 #ifndef LLVM_SYMBOLTABLELISTTRAITS_H
 #define LLVM_SYMBOLTABLELISTTRAITS_H
 
-namespace llvm {
+#include "llvm/ADT/ilist.h"
 
+namespace llvm {
+class ValueSymbolTable;
+  
 template<typename NodeTy> class ilist_iterator;
 template<typename NodeTy, typename Traits> class iplist;
 template<typename Ty> struct ilist_traits;
 
-// ValueSubClass  - The type of objects that I hold
-// ItemParentType - I call setParent() on all of my "ValueSubclass" items, and
-//                  this is the value that I pass in.
-// SymTabType     - This is the class type, whose symtab I insert my
-//                  ValueSubClass items into.  Most of the time it is
-//                  ItemParentType, but Instructions have item parents of BB's
-//                  but symtabtype's of a Function
+// ValueSubClass   - The type of objects that I hold, e.g. Instruction.
+// ItemParentClass - The type of object that owns the list, e.g. BasicBlock.
 //
-template<typename ValueSubClass, typename ItemParentClass, typename SymTabClass,
-         typename SubClass=ilist_traits<ValueSubClass> >
-class SymbolTableListTraits {
-  SymTabClass     *SymTabObject;
-  ItemParentClass *ItemParent;
+template<typename ValueSubClass, typename ItemParentClass>
+class SymbolTableListTraits : public ilist_default_traits<ValueSubClass> {
+  typedef ilist_traits<ValueSubClass> TraitsClass;
 public:
-  SymbolTableListTraits() : SymTabObject(0), ItemParent(0) {}
-
-        SymTabClass *getParent()       { return SymTabObject; }
-  const SymTabClass *getParent() const { return SymTabObject; }
+  SymbolTableListTraits() {}
 
-  static ValueSubClass *getPrev(ValueSubClass *V) { return V->getPrev(); }
-  static ValueSubClass *getNext(ValueSubClass *V) { return V->getNext(); }
-  static const ValueSubClass *getPrev(const ValueSubClass *V) {
-    return V->getPrev();
+  /// getListOwner - Return the object that owns this list.  If this is a list
+  /// of instructions, it returns the BasicBlock that owns them.
+  ItemParentClass *getListOwner() {
+    typedef iplist<ValueSubClass> ItemParentClass::*Sublist;
+    size_t Offset(size_t(&((ItemParentClass*)0->*ItemParentClass::
+                           getSublistAccess(static_cast<ValueSubClass*>(0)))));
+    iplist<ValueSubClass>* Anchor(static_cast<iplist<ValueSubClass>*>(this));
+    return reinterpret_cast<ItemParentClass*>(reinterpret_cast<char*>(Anchor)-
+                                              Offset);
   }
-  static const ValueSubClass *getNext(const ValueSubClass *V) {
-    return V->getNext();
+
+  static iplist<ValueSubClass> &getList(ItemParentClass *Par) {
+    return Par->*(Par->getSublistAccess((ValueSubClass*)0));
   }
 
-  static void setPrev(ValueSubClass *V, ValueSubClass *P) { V->setPrev(P); }
-  static void setNext(ValueSubClass *V, ValueSubClass *N) { V->setNext(N); }
+  static ValueSymbolTable *getSymTab(ItemParentClass *Par) {
+    return Par ? toPtr(Par->getValueSymbolTable()) : 0;
+  }
 
   void addNodeToList(ValueSubClass *V);
   void removeNodeFromList(ValueSubClass *V);
-  void transferNodesFromList(iplist<ValueSubClass,
-                             ilist_traits<ValueSubClass> > &L2,
+  void transferNodesFromList(ilist_traits<ValueSubClass> &L2,
                              ilist_iterator<ValueSubClass> first,
                              ilist_iterator<ValueSubClass> last);
-
 //private:
-  void setItemParent(ItemParentClass *IP) { ItemParent = IP; }//This is private!
-  void setParent(SymTabClass *Parent);  // This is private!
+  template<typename TPtr>
+  void setSymTabObject(TPtr *, TPtr);
+  static ValueSymbolTable *toPtr(ValueSymbolTable *P) { return P; }
+  static ValueSymbolTable *toPtr(ValueSymbolTable &R) { return &R; }
 };
 
 } // End llvm namespace