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9769ab2226
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21408 91177308-0d34-0410-b5e6-96231b3b80d8
80 lines
3.2 KiB
C++
80 lines
3.2 KiB
C++
//===-- llvm/SymbolTableListTraits.h - Traits for iplist --------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a generic class that is used to implement the automatic
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// symbol table manipulation that occurs when you put (for example) a named
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// instruction into a basic block.
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//
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// The way that this is implemented is by using a special traits class with the
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// intrusive list that makes up the list of instructions in a basic block. When
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// a new element is added to the list of instructions, the traits class is
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// notified, allowing the symbol table to be updated.
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//
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// This generic class implements the traits class. It must be generic so that
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// it can work for all uses it, which include lists of instructions, basic
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// blocks, arguments, functions, global variables, etc...
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SYMBOLTABLELISTTRAITS_H
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#define LLVM_SYMBOLTABLELISTTRAITS_H
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namespace llvm {
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template<typename NodeTy> class ilist_iterator;
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template<typename NodeTy, typename Traits> class iplist;
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template<typename Ty> struct ilist_traits;
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// ValueSubClass - The type of objects that I hold
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// ItemParentType - I call setParent() on all of my "ValueSubclass" items, and
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// this is the value that I pass in.
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// SymTabType - This is the class type, whose symtab I insert my
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// ValueSubClass items into. Most of the time it is
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// ItemParentType, but Instructions have item parents of BB's
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// but symtabtype's of a Function
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//
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template<typename ValueSubClass, typename ItemParentClass, typename SymTabClass,
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typename SubClass=ilist_traits<ValueSubClass> >
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class SymbolTableListTraits {
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SymTabClass *SymTabObject;
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ItemParentClass *ItemParent;
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public:
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SymbolTableListTraits() : SymTabObject(0), ItemParent(0) {}
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SymTabClass *getParent() { return SymTabObject; }
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const SymTabClass *getParent() const { return SymTabObject; }
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static ValueSubClass *getPrev(ValueSubClass *V) { return V->getPrev(); }
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static ValueSubClass *getNext(ValueSubClass *V) { return V->getNext(); }
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static const ValueSubClass *getPrev(const ValueSubClass *V) {
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return V->getPrev();
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}
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static const ValueSubClass *getNext(const ValueSubClass *V) {
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return V->getNext();
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}
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static void setPrev(ValueSubClass *V, ValueSubClass *P) { V->setPrev(P); }
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static void setNext(ValueSubClass *V, ValueSubClass *N) { V->setNext(N); }
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void addNodeToList(ValueSubClass *V);
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void removeNodeFromList(ValueSubClass *V);
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void transferNodesFromList(iplist<ValueSubClass,
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ilist_traits<ValueSubClass> > &L2,
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ilist_iterator<ValueSubClass> first,
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ilist_iterator<ValueSubClass> last);
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//private:
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void setItemParent(ItemParentClass *IP) { ItemParent = IP; }//This is private!
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void setParent(SymTabClass *Parent); // This is private!
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};
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} // End llvm namespace
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#endif
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