BLE: Add collection of basic BLE types shared accross all layers.

Author: pan-

features/FEATURE_BLE/ble/BLETypes.h

@@ -0,0 +1,77 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017-2017 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef BLE_TYPES_H_
+#define BLE_TYPES_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace ble {
+
+/**
+ * A connection handle is an unsigned integer capable of holding a pointer.
+ * The real type (either a pointer to an object or an integer) is opaque and
+ * platform dependent.
+ */
+typedef uintptr_t connection_handle_t;
+
+/**
+ * Model an attribute handle in a GATT database.
+ */
+typedef uint16_t attribute_handle_t;
+
+
+ /**
+  * Model an inclusive range of GATT attributes handles.
+  */
+struct attribute_handle_range_t {
+    attribute_handle_t begin;
+    attribute_handle_t end;
+
+    friend bool operator==(
+        const attribute_handle_range_t& lhs, const attribute_handle_range_t& rhs
+    ) {
+        return (lhs.begin == rhs.begin) && (lhs.end == rhs.end);
+    }
+
+    friend bool operator!=(
+        const attribute_handle_range_t& lhs, const attribute_handle_range_t& rhs
+    ) {
+        return !(lhs == rhs);
+    }
+};
+
+
+/**
+ * Construct an attribute_handle_range_t from its start and end handle.
+ * @note This function is defined instead of a constructor to keep "POD-ness"
+ * of attribute_handle_range_t.
+ */
+static inline attribute_handle_range_t attribute_handle_range(
+    attribute_handle_t begin,
+    attribute_handle_t end
+) {
+    attribute_handle_range_t result = {
+        begin,
+        end
+    };
+    return result;
+}
+
+} // namespace ble
+
+#endif /* BLE_TYPES_H_ */