dgrove@google.com
4c0f559d23
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15 260f80e4-7a28-3924-810f-c04153c831b5
34 lines
1.3 KiB
C++
34 lines
1.3 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/native_entry.h"
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#include "include/dart_api.h"
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#include "vm/dart_api_impl.h"
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namespace dart {
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DEFINE_FLAG(bool, trace_natives, false, "Trace invocation of natives");
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NativeFunction NativeEntry::ResolveNative(const Class& cls,
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const String& function_name,
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int number_of_arguments) {
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// Now resolve the native function to the corresponding native entrypoint.
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const Library& library = Library::Handle(cls.library());
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if (library.native_entry_resolver() == 0) {
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// Native methods are not allowed in the library to which this
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// class belongs in.
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return NULL;
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}
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Dart_EnterScope(); // Enter a new Dart API scope as we invoke API entries.
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Dart_NativeEntryResolver resolver = library.native_entry_resolver();
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Dart_NativeFunction native_function =
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resolver(Api::NewLocalHandle(function_name), number_of_arguments);
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Dart_ExitScope(); // Exit the Dart API scope.
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return reinterpret_cast<NativeFunction>(native_function);
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}
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} // namespace dart
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