| //===-- llvm/SymbolTableListTraits.h - Traits for iplist --------*- C++ -*-===// |
| // |
| // 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 defines a generic class that is used to implement the automatic |
| // symbol table manipulation that occurs when you put (for example) a named |
| // instruction into a basic block. |
| // |
| // The way that this is implemented is by using a special traits class with the |
| // intrusive list that makes up the list of instructions in a basic block. When |
| // a new element is added to the list of instructions, the traits class is |
| // notified, allowing the symbol table to be updated. |
| // |
| // This generic class implements the traits class. It must be generic so that |
| // it can work for all uses it, which include lists of instructions, basic |
| // blocks, arguments, functions, global variables, etc... |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_SYMBOLTABLELISTTRAITS_H |
| #define LLVM_SYMBOLTABLELISTTRAITS_H |
| |
| namespace llvm { |
| |
| 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, e.g. Instruction. |
| // ItemParentType - The type of object that owns the list, e.g. BasicBlock. |
| // TraitBaseClass - The class this trait should inherit from, it should |
| // inherit from ilist_traits<ValueSubClass> |
| // |
| template<typename ValueSubClass, typename ItemParentClass> |
| class SymbolTableListTraits { |
| typedef ilist_traits<ValueSubClass> TraitsClass; |
| public: |
| SymbolTableListTraits() {} |
| |
| /// getListOwner - Return the object that owns this list. If this is a list |
| /// of instructions, it returns the BasicBlock that owns them. |
| ItemParentClass *getListOwner() { |
| return reinterpret_cast<ItemParentClass*>((char*)this- |
| TraitsClass::getListOffset()); |
| } |
| 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(); |
| } |
| static const ValueSubClass *getNext(const ValueSubClass *V) { |
| return V->getNext(); |
| } |
| |
| static void setPrev(ValueSubClass *V, ValueSubClass *P) { V->setPrev(P); } |
| static void setNext(ValueSubClass *V, ValueSubClass *N) { V->setNext(N); } |
| |
| void addNodeToList(ValueSubClass *V); |
| void removeNodeFromList(ValueSubClass *V); |
| void transferNodesFromList(iplist<ValueSubClass, |
| ilist_traits<ValueSubClass> > &L2, |
| ilist_iterator<ValueSubClass> first, |
| ilist_iterator<ValueSubClass> last); |
| //private: |
| template<typename TPtr> |
| void setSymTabObject(TPtr *, TPtr); |
| }; |
| |
| } // End llvm namespace |
| |
| #endif |