Initial revision

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2 91177308-0d34-0410-b5e6-96231b3b80d8

lib/VMCore/Module.cpp

@@ -0,0 +1,42 @@
+//===-- Module.cpp - Implement the Module class ------------------*- C++ -*--=//
+//
+// This file implements the Module class for the VMCore library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ValueHolderImpl.h"
+#include "llvm/InstrTypes.h"
+#include "llvm/BasicBlock.h"
+#include "llvm/Method.h"
+#include "llvm/Module.h"
+
+// Instantiate Templates - This ugliness is the price we have to pay
+// for having a DefHolderImpl.h file seperate from DefHolder.h!  :(
+//
+template class ValueHolder<Method, Module>;
+
+Module::Module()
+  : SymTabValue(0/*TODO: REAL TYPE*/, Value::ModuleVal, ""),
+    MethodList(this, this) {
+}
+
+Module::~Module() {
+  dropAllReferences();
+  MethodList.delete_all();
+  MethodList.setParent(0);
+}
+
+
+// dropAllReferences() - This function causes all the subinstructions to "let
+// go" of all references that they are maintaining.  This allows one to
+// 'delete' a whole class at a time, even though there may be circular
+// references... first all references are dropped, and all use counts go to
+// zero.  Then everything is delete'd for real.  Note that no operations are
+// valid on an object that has "dropped all references", except operator 
+// delete.
+//
+void Module::dropAllReferences() {
+  MethodListType::iterator MI = MethodList.begin();
+  for (; MI != MethodList.end(); MI++)
+    (*MI)->dropAllReferences();
+}