Use specialized unwrapping methods for reading Double and Bool values.

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 696 matching lines @@
  * \param value true or false.
  *
  * \return The Boolean object if no error occurs. Otherwise returns
  *   an error handle.
  */
 DART_EXPORT Dart_Handle Dart_NewBoolean(bool value);
 
 /**
  * Gets the value of a Boolean
  *
- * \param bool_object A Boolean
+ * \param boolean_obj A Boolean
  * \param value Returns the value of the Boolean.
  *
  * \return A valid handle if no error occurs during the operation.
  */
-DART_EXPORT Dart_Handle Dart_BooleanValue(Dart_Handle bool_object, bool* value);
+DART_EXPORT Dart_Handle Dart_BooleanValue(Dart_Handle boolean_obj, bool* value);
 
 // --- Doubles ---
 
 /**
  * Is this object a Double?
  */
 DART_EXPORT bool Dart_IsDouble(Dart_Handle object);
 
 /**
  * Returns a Double with the provided value.
  *
  * \param value A double.
  *
  * \return The Double object if no error occurs. Otherwise returns
  *   an error handle.
  */
 DART_EXPORT Dart_Handle Dart_NewDouble(double value);
 
 /**
  * Gets the value of a Double
  *
- * \param bool_object A Double
+ * \param double_obj A Double
  * \param value Returns the value of the Double.
  *
  * \return A valid handle if no error occurs during the operation.
  */
-DART_EXPORT Dart_Handle Dart_DoubleValue(Dart_Handle integer, double* result);
+DART_EXPORT Dart_Handle Dart_DoubleValue(Dart_Handle double_obj, double* value);
 
 // --- Strings ---
 
 /**
  * Is this object a String?
  */
 DART_EXPORT bool Dart_IsString(Dart_Handle object);
 
 /**
  * Is this object a String whose codepoints all fit into 8 bits?
@@ skipping 561 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_