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Diffstat (limited to 'include/llvm/SymbolTableListTraits.h')
-rw-r--r-- | include/llvm/SymbolTableListTraits.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/include/llvm/SymbolTableListTraits.h b/include/llvm/SymbolTableListTraits.h new file mode 100644 index 0000000..205b409 --- /dev/null +++ b/include/llvm/SymbolTableListTraits.h @@ -0,0 +1,76 @@ +//===-- 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 |