violet: initial implementation

src/util/ue2string.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, Intel Corporation
+ * Copyright (c) 2015-2016, Intel Corporation
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -55,8 +55,6 @@ size_t maxStringSelfOverlap(const std::string &a, bool nocase);
 /// Compares two strings, returns non-zero if they're different.
 u32 cmp(const char *a, const char *b, size_t len, bool nocase);
 
-class CharReach;
-
 struct ue2_literal {
 public:
     /// Single element proxy, pointed to by our const_iterator.
@@ -124,6 +122,13 @@ public:
     ue2_literal &operator=(const ue2_literal &) = default;
     ue2_literal &operator=(ue2_literal &&) = default;
 
+    template<typename InputIt>
+    ue2_literal(InputIt b, InputIt e) {
+        for (; b != e; ++b) {
+            push_back(*b);
+        }
+    }
+
     size_type length() const { return s.length(); }
     bool empty() const { return s.empty(); }
     ue2_literal substr(size_type pos, size_type n = std::string::npos) const;