import full versions of dependency libraries!

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+// 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_COMPILATION_CACHE_H_
+#define V8_COMPILATION_CACHE_H_
+
+namespace v8 { namespace internal {
+
+
+// The compilation cache keeps function boilerplates for compiled
+// scripts and evals. The boilerplates are looked up using the source
+// string as the key.
+class CompilationCache {
+ public:
+  // The same source code string has different compiled code for
+  // scripts and evals. Internally, we use separate caches to avoid
+  // getting the wrong kind of entry when looking up.
+  enum Entry {
+    SCRIPT,
+    EVAL_GLOBAL,
+    EVAL_CONTEXTUAL,
+    REGEXP,
+    LAST_ENTRY = REGEXP
+  };
+
+  // Finds the script function boilerplate for a source
+  // string. Returns an empty handle if the cache doesn't contain a
+  // script for the given source string with the right origin.
+  static Handle<JSFunction> LookupScript(Handle<String> source,
+                                         Handle<Object> name,
+                                         int line_offset,
+                                         int column_offset);
+
+  // Finds the function boilerplate for a source string for eval in a
+  // given context.  Returns an empty handle if the cache doesn't
+  // contain a script for the given source string.
+  static Handle<JSFunction> LookupEval(Handle<String> source,
+                                       Handle<Context> context,
+                                       Entry entry);
+
+  // Returns the regexp data associated with the given regexp if it
+  // is in cache, otherwise an empty handle.
+  static Handle<FixedArray> LookupRegExp(Handle<String> source,
+                                         JSRegExp::Flags flags);
+
+  // Associate the (source, kind) pair to the boilerplate. This may
+  // overwrite an existing mapping.
+  static void PutScript(Handle<String> source,
+                        Handle<JSFunction> boilerplate);
+
+  // Associate the (source, context->closure()->shared(), kind) triple
+  // with the boilerplate. This may overwrite an existing mapping.
+  static void PutEval(Handle<String> source,
+                      Handle<Context> context,
+                      Entry entry,
+                      Handle<JSFunction> boilerplate);
+
+  // Associate the (source, flags) pair to the given regexp data.
+  // This may overwrite an existing mapping.
+  static void PutRegExp(Handle<String> source,
+                        JSRegExp::Flags flags,
+                        Handle<FixedArray> data);
+
+  // Clear the cache - also used to initialize the cache at startup.
+  static void Clear();
+
+  // GC support.
+  static void Iterate(ObjectVisitor* v);
+
+  // Notify the cache that a mark-sweep garbage collection is about to
+  // take place. This is used to retire entries from the cache to
+  // avoid keeping them alive too long without using them. For now, we
+  // just clear the cache but we should consider are more
+  // sophisticated LRU scheme.
+  static void MarkCompactPrologue() { Clear(); }
+};
+
+
+} }  // namespace v8::internal
+
+#endif  // V8_COMPILATION_CACHE_H_