1 files changed, 121 insertions, 0 deletions
diff --git a/src/3rdparty/v8/src/hashmap.h b/src/3rdparty/v8/src/hashmap.h
new file mode 100644
index 0000000..bb3e3ce
--- /dev/null
+++ b/src/3rdparty/v8/src/hashmap.h
@@ -0,0 +1,121 @@
+// Copyright 2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_HASHMAP_H_
+#define V8_HASHMAP_H_
+
+namespace v8 {
+namespace internal {
+
+
+// Allocator defines the memory allocator interface
+// used by HashMap and implements a default allocator.
+class Allocator BASE_EMBEDDED {
+ public:
+  virtual ~Allocator()  {}
+  virtual void* New(size_t size)  { return Malloced::New(size); }
+  virtual void Delete(void* p)  { Malloced::Delete(p); }
+};
+
+
+class HashMap {
+ public:
+  static Allocator DefaultAllocator;
+
+  typedef bool (*MatchFun) (void* key1, void* key2);
+
+  // Dummy constructor.  This constructor doesn't set up the hash
+  // map properly so don't use it unless you have good reason (e.g.,
+  // you know that the HashMap will never be used).
+  HashMap();
+
+  // initial_capacity is the size of the initial hash map;
+  // it must be a power of 2 (and thus must not be 0).
+  explicit HashMap(MatchFun match,
+                   Allocator* allocator = &DefaultAllocator,
+                   uint32_t initial_capacity = 8);
+
+  ~HashMap();
+
+  // HashMap entries are (key, value, hash) triplets.
+  // Some clients may not need to use the value slot
+  // (e.g. implementers of sets, where the key is the value).
+  struct Entry {
+    void* key;
+    void* value;
+    uint32_t hash;  // the full hash value for key
+  };
+
+  // If an entry with matching key is found, Lookup()
+  // returns that entry. If no matching entry is found,
+  // but insert is set, a new entry is inserted with
+  // corresponding key, key hash, and NULL value.
+  // Otherwise, NULL is returned.
+  Entry* Lookup(void* key, uint32_t hash, bool insert);
+
+  // Removes the entry with matching key.
+  void Remove(void* key, uint32_t hash);
+
+  // Empties the hash map (occupancy() == 0).
+  void Clear();
+
+  // The number of (non-empty) entries in the table.
+  uint32_t occupancy() const { return occupancy_; }
+
+  // The capacity of the table. The implementation
+  // makes sure that occupancy is at most 80% of
+  // the table capacity.
+  uint32_t capacity() const { return capacity_; }
+
+  // Iteration
+  //
+  // for (Entry* p = map.Start(); p != NULL; p = map.Next(p)) {
+  //   ...
+  // }
+  //
+  // If entries are inserted during iteration, the effect of
+  // calling Next() is undefined.
+  Entry* Start() const;
+  Entry* Next(Entry* p) const;
+
+ private:
+  Allocator* allocator_;
+  MatchFun match_;
+  Entry* map_;
+  uint32_t capacity_;
+  uint32_t occupancy_;
+
+  Entry* map_end() const { return map_ + capacity_; }
+  Entry* Probe(void* key, uint32_t hash);
+  void Initialize(uint32_t capacity);
+  void Resize();
+};
+
+
+} }  // namespace v8::internal
+
+#endif  // V8_HASHMAP_H_