- Use a map to lookup libraries by URL.

runtime/vm/parser.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/parser.h"
 #include "vm/flags.h"
 
 #ifndef DART_PRECOMPILED_RUNTIME
 
 #include "lib/invocation_mirror.h"
@@ skipping 5904 matching lines @@
       hide_names = Array::MakeArray(hide_list);
     }
   }
   ExpectSemicolon();
 
   // Canonicalize library URL.
   const String& canon_url = String::CheckedHandle(
       CallLibraryTagHandler(Dart_kCanonicalizeUrl, import_pos, url));
 
   // Create a new library if it does not exist yet.
-  Library& library = Library::Handle(Z, Library::LookupLibrary(canon_url));
+  Library& library = Library::Handle(Z, Library::LookupLibrary(T, canon_url));
   if (library.IsNull()) {
     library = Library::New(canon_url);
-    library.Register();
+    library.Register(T);
   }
 
   // If loading hasn't been requested yet, and if this is not a deferred
   // library import, call the library tag handler to request loading
   // the library.
   if (library.LoadNotStarted() &&
       (!is_deferred_import || FLAG_load_deferred_eagerly)) {
     library.SetLoadRequested();
     CallLibraryTagHandler(Dart_kImportTag, import_pos, canon_url);
   }
@@ skipping 6052 matching lines @@
   static uword Hash(const Object& obj) {
     const Array& key = Array::Cast(obj);
     intptr_t url_hash = String::HashRawSymbol(String::RawCast(key.At(0)));
     intptr_t pos = Smi::Value(Smi::RawCast(key.At(1)));
     return HashValue(url_hash, pos);
   }
   static uword Hash(const ConstantPosKey& key) {
     return HashValue(String::HashRawSymbol(key.script_url.raw()),
                      key.token_pos.value());
   }
-  // Used by CachConstantValue if a new constant is added to the map.
+  // Used by CacheConstantValue if a new constant is added to the map.
   static RawObject* NewKey(const ConstantPosKey& key) {
     const Array& key_obj = Array::Handle(Array::New(2));
     key_obj.SetAt(0, key.script_url);
     key_obj.SetAt(1, Smi::Handle(Smi::New(key.token_pos.value())));
     return key_obj.raw();;
   }
 
  private:
   static uword HashValue(intptr_t url_hash, intptr_t pos) {
     return url_hash * pos % (Smi::kMaxValue - 13);
@@ skipping 2471 matching lines @@
     const ArgumentListNode& function_args,
     const LocalVariable* temp_for_last_arg,
     bool is_super_invocation) {
   UNREACHABLE();
   return NULL;
 }
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED_RUNTIME