Add accessors for Maps to the embedding API.

runtime/include/dart_api.h

 /*
  * 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.
  */
 
 #ifndef INCLUDE_DART_API_H_
 #define INCLUDE_DART_API_H_
 
 /** \mainpage Dart Embedding API Reference
@@ skipping 1307 matching lines @@
  */
 DART_EXPORT bool Dart_IsInstance(Dart_Handle object);
 DART_EXPORT bool Dart_IsNumber(Dart_Handle object);
 DART_EXPORT bool Dart_IsInteger(Dart_Handle object);
 DART_EXPORT bool Dart_IsDouble(Dart_Handle object);
 DART_EXPORT bool Dart_IsBoolean(Dart_Handle object);
 DART_EXPORT bool Dart_IsString(Dart_Handle object);
 DART_EXPORT bool Dart_IsStringLatin1(Dart_Handle object);  /* (ISO-8859-1) */
 DART_EXPORT bool Dart_IsExternalString(Dart_Handle object);
 DART_EXPORT bool Dart_IsList(Dart_Handle object);
+DART_EXPORT bool Dart_IsMap(Dart_Handle object);
 DART_EXPORT bool Dart_IsLibrary(Dart_Handle object);
 DART_EXPORT bool Dart_IsType(Dart_Handle handle);
 DART_EXPORT bool Dart_IsFunction(Dart_Handle handle);
 DART_EXPORT bool Dart_IsVariable(Dart_Handle handle);
 DART_EXPORT bool Dart_IsTypeVariable(Dart_Handle handle);
 DART_EXPORT bool Dart_IsClosure(Dart_Handle object);
 
 
 /*
  * =========
@@ skipping 431 matching lines @@
 /**
  * Gets the Object at some index of a List.
  *
  * If the index is out of bounds, an error occurs.
  *
  * May generate an unhandled exception error.
  *
  * \param list A List.
  * \param index A valid index into the List.
  *
- * \return The Object in the List at the specified index if no errors
+ * \return The Object in the List at the specified index if no error
  *   occurs. Otherwise returns an error handle.
  */
 DART_EXPORT Dart_Handle Dart_ListGetAt(Dart_Handle list,
                                        intptr_t index);
 
 /**
  * Sets the Object at some index of a List.
  *
  * If the index is out of bounds, an error occurs.
  *
@@ skipping 20 matching lines @@
 /**
  * May generate an unhandled exception error.
  */
 DART_EXPORT Dart_Handle Dart_ListSetAsBytes(Dart_Handle list,
                                             intptr_t offset,
                                             uint8_t* native_array,
                                             intptr_t length);
 
 
 /*
+ * ====
+ * Maps
+ * ====
+ */
+
+/**
+ * Gets the Object at some key of a Map.
+ *
+ * May generate an unhandled exception error.
+ *
+ * \param map A Map.
+ * \param key An Object.
+ *
+ * \return The value in the map at the specified key, null if the map does not
+ *   contain the key, or an error handle.
+ */
+DART_EXPORT Dart_Handle Dart_MapGetAt(Dart_Handle map, Dart_Handle key);
+
+/**
+ * Returns whether the Map contains a given key.
+ *
+ * May generate an unhandled exception error.
+ *
+ * \param map A Map.
+ *
+ * \return A handle on a boolean indicating whether map contains the key.
+ *   Otherwise returns an error handle.
+ */
+DART_EXPORT Dart_Handle Dart_MapContainsKey(Dart_Handle map, Dart_Handle key);
+
+/**
+ * Gets the list of keys of a Map.
+ *
+ * May generate an unhandled exception error.
+ *
+ * \param map A Map.
+ *
+ * \return The list of key Objects if no error occurs. Otherwise returns an
+ *   error handle.
+ */
+DART_EXPORT Dart_Handle Dart_MapKeys(Dart_Handle map);
+
+
+/*
  * ==========
  * Typed Data
  * ==========
  */
 
 typedef enum {
   Dart_TypedData_kByteData = 0,
   Dart_TypedData_kInt8,
   Dart_TypedData_kUint8,
   Dart_TypedData_kUint8Clamped,
@@ skipping 894 matching lines @@
  * NOTE: If multiple callbacks with the same name are registered, only the
  * last callback registered will be remembered.
  */
 DART_EXPORT void Dart_RegisterRootServiceRequestCallback(
     const char* name,
     Dart_ServiceRequestCallback callback,
     void* user_data);
 
 
 #endif  /* INCLUDE_DART_API_H_ */  /* NOLINT */