Add an interface for retrieving the value of unsigned 64-bit integers.

runtime/include/dart_api.h

 // Copyright (c) 2011, 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.
 
 #ifndef INCLUDE_DART_API_H_
 #define INCLUDE_DART_API_H_
 
 /** \mainpage Dart Embedding API Reference
  *
  * Dart is a class-based programming language for creating structured
@@ skipping 584 matching lines @@
 /**
  * Gets the value of an Integer.
  *
  * The integer must fit into a 64-bit signed integer, otherwise an error occurs.
  *
  * \param integer An Integer.
  * \param value Returns the value of the Integer.
  *
  * \return A valid handle if no error occurs during the operation.
  */
-DART_EXPORT Dart_Handle Dart_IntegerValue(Dart_Handle integer, int64_t* value);
+DART_EXPORT Dart_Handle Dart_IntegerToInt64(Dart_Handle integer,
+                                            int64_t* value);
+
+/**
+ * Gets the value of an Integer.
+ *
+ * The integer must fit into a 64-bit unsigned integer, otherwise an
+ * error occurs.
+ *
+ * \param integer An Integer.
+ * \param value Returns the value of the Integer.
+ *
+ * \return A valid handle if no error occurs during the operation.
+ */
+DART_EXPORT Dart_Handle Dart_IntegerToUint64(Dart_Handle integer,
+                                             uint64_t* value);
 
 /**
  * Gets the value of an integer as a hexadecimal C string.
  *
  * \param integer An Integer.
  * \param value Returns the value of the Integer as a hexadecimal C
  *   string. This C string is scope allocated and is only valid until
  *   the next call to Dart_ExitScope.
  *
  * \return A valid handle if no error occurs during the operation.
@@ skipping 564 matching lines @@
 
 // --- Profiling support ----
 
 // External pprof support for gathering and dumping symbolic
 // information that can be used for better profile reports for
 // dynamically generated code.
 DART_EXPORT void Dart_InitPprofSupport();
 DART_EXPORT void Dart_GetPprofSymbolInfo(void** buffer, int* buffer_size);
 
 #endif  // INCLUDE_DART_API_H_