1 files changed, 70 insertions, 0 deletions
diff --git a/gold/stringpool.h b/gold/stringpool.h
new file mode 100644
index 0000000..873c26a
--- /dev/null
+++ b/gold/stringpool.h
@@ -0,0 +1,70 @@
+// stringpool.h -- a string pool for gold    -*- C++ -*-
+
+#include <string>
+#include <list>
+
+// Stringpool
+//   Manage a pool of unique strings.
+
+#ifndef GOLD_STRINGPOOL_H
+#define GOLD_STRINGPOOL_H
+
+namespace gold
+{
+
+class Stringpool
+{
+ public:
+  Stringpool();
+
+  ~Stringpool();
+
+  // Add a string to the pool.  This returns a canonical permanent
+  // pointer to the string.
+  const char* add(const char*);
+
+  const char* add(const std::string& s)
+  { return this->add(s.c_str()); }
+
+  // Add the prefix of a string to the pool.
+  const char* add(const char *, size_t);
+
+ private:
+  Stringpool(const Stringpool&);
+  Stringpool& operator=(const Stringpool&);
+
+  struct stringdata
+  {
+    // Length of data in buffer.
+    size_t len;
+    // Allocated size of buffer.
+    size_t alc;
+    // Buffer.
+    char data[1];
+  };
+
+  const char* add_string(const char*);
+
+  struct Stringpool_hash
+  {
+    size_t
+    operator()(const char*) const;
+  };
+
+  struct Stringpool_eq
+  {
+    bool
+    operator()(const char* p1, const char* p2) const
+    { return strcmp(p1, p2) == 0; }
+  };
+
+  typedef Unordered_set<const char*, Stringpool_hash, Stringpool_eq,
+			std::allocator<const char*>,
+			true> String_set_type;
+  String_set_type string_set_;
+  std::list<stringdata*> strings_;
+};
+
+} // End namespace gold.
+
+#endif // !defined(GOLD_STRINGPOOL_H)