1 files changed, 86 insertions, 0 deletions
diff --git a/include/llvm/ValueHolder.h b/include/llvm/ValueHolder.h
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+++ b/include/llvm/ValueHolder.h
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+//===-- llvm/ValueHolder.h - Class to hold multiple values -------*- C++ -*--=//
+//
+// This defines a class that is used as a fancy Definition container.  It is 
+// special because it helps keep the symbol table of the container method up to
+// date with the goings on inside of it.
+//
+// This is used to represent things like the instructions of a basic block and
+// the arguments to a method.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_VALUEHOLDER_H
+#define LLVM_VALUEHOLDER_H
+
+#include <vector>
+class SymTabValue;
+
+// ItemParentType ItemParent - I call setParent() on all of my 
+// "ValueSubclass" items, and this is the value that I pass in.
+//
+template<class ValueSubclass, class ItemParentType> 
+class ValueHolder {
+  // TODO: Should I use a deque instead of a vector?
+  vector<ValueSubclass*> ValueList;
+
+  ItemParentType *ItemParent;
+  SymTabValue *Parent;
+
+  ValueHolder(const ValueHolder &V);   // DO NOT IMPLEMENT
+public:
+  inline ValueHolder(ItemParentType *IP, SymTabValue *parent = 0) { 
+    assert(IP && "Item parent may not be null!");
+    ItemParent = IP;
+    Parent = 0;
+    setParent(parent); 
+  }
+
+  inline ~ValueHolder() {
+    // The caller should have called delete_all first...
+    assert(empty() && "ValueHolder contains definitions!");
+    assert(Parent == 0 && "Should have been unlinked from method!");
+  }
+
+  inline const SymTabValue *getParent() const { return Parent; }
+  inline SymTabValue *getParent() { return Parent; }
+  void setParent(SymTabValue *Parent);  // Defined in ValueHolderImpl.h
+
+  inline unsigned size() const { return ValueList.size(); }
+  inline bool empty()    const { return ValueList.empty(); }
+  inline const ValueSubclass *front() const { return ValueList.front(); }
+  inline       ValueSubclass *front()       { return ValueList.front(); }
+  inline const ValueSubclass *back()  const { return ValueList.back(); }
+  inline       ValueSubclass *back()        { return ValueList.back(); }
+
+  //===--------------------------------------------------------------------===//
+  // sub-Definition iterator code
+  //===--------------------------------------------------------------------===//
+  // 
+  typedef vector<ValueSubclass*>::iterator       iterator;
+  typedef vector<ValueSubclass*>::const_iterator const_iterator;
+
+  inline iterator       begin()       { return ValueList.begin(); }
+  inline const_iterator begin() const { return ValueList.begin(); }
+  inline iterator       end()         { return ValueList.end();   }
+  inline const_iterator end()   const { return ValueList.end();   }
+
+  void delete_all() {            // Delete all removes and deletes all elements
+    // TODO: REMOVE FROM END OF VECTOR!!!
+    while (begin() != end()) {
+      iterator I = begin();
+      delete remove(I);          // Delete all instructions...
+    }
+  }
+
+  // ValueHolder::remove(iterator &) this removes the element at the location 
+  // specified by the iterator, and leaves the iterator pointing to the element 
+  // that used to follow the element deleted.
+  //
+  ValueSubclass *remove(iterator &DI);  // Defined in ValueHolderImpl.h
+  void     remove(ValueSubclass *D);    // Defined in ValueHolderImpl.h
+
+  inline void push_front(ValueSubclass *Inst); // Defined in ValueHolderImpl.h
+  inline void push_back(ValueSubclass *Inst);  // Defined in ValueHolderImpl.h
+};
+
+#endif