Give SetVector range support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14855 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 17 insertions, 1 deletions

diff --git a/include/Support/SetVector.h b/include/Support/SetVector.h
index a6e3f850fd..1b250ad670 100644
--- a/include/Support/SetVector.h
+++ b/include/Support/SetVector.h
@@ -28,7 +28,6 @@ namespace llvm {
 /// @breif A vector that has set insertion semantics.
 template <typename T>
 class SetVector {
-
 public:
   typedef T value_type;
   typedef T key_type;
@@ -40,6 +39,15 @@ public:
   typedef typename vector_type::const_iterator const_iterator;
   typedef typename vector_type::size_type size_type;
 
+  /// @brief Construct an empty SetVector
+  SetVector() {}
+
+  /// @brief Initialize a SetVector with a range of elements
+  template<typename It>
+  SetVector( It Start, It End ) {
+    insert(Start, End);
+  }
+
   /// @brief Completely clear the SetVector
   void clear() {
     set_.clear();
@@ -91,6 +99,14 @@ public:
     return result;
   }
 
+  /// @brief Insert a range of elements into the SetVector.
+  template<typename It>
+  void insert( It Start, It End ) {
+    for (; Start != End; ++Start)
+      if ( set_.insert(*Start).second )
+        vector_.push_back(*Start);
+  }
+
   /// @returns 0 if the element is not in the SetVector, 1 if it is.
   /// @brief Count the number of elements of a given key in the SetVector.
   size_type count( const key_type& key ) const {