ntcore: Initial commit.

Change-Id: Id8df275a34aaa628581b18e39014b880c29bf9b2

src/nt_value.cpp

@@ -0,0 +1,67 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2015. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "nt_value.h"
+
+#include <cassert>
+#include <cstring>
+
+#include "ntcore.h"
+
+bool
+operator== (const NT_Value &lhs, const NT_Value &rhs)
+{
+    if (lhs.type != rhs.type)
+        return 0;
+    switch (lhs.type)
+    {
+    case NT_UNASSIGNED:
+        return 1; // XXX: is this better being false instead?
+    case NT_BOOLEAN:
+        return lhs.data.v_boolean == rhs.data.v_boolean;
+    case NT_DOUBLE:
+        return lhs.data.v_double == rhs.data.v_double;
+    case NT_STRING:
+    case NT_RAW:
+    case NT_RPC:
+        if (lhs.data.v_string.len != rhs.data.v_string.len)
+            return 0;
+        return std::memcmp(lhs.data.v_string.str, rhs.data.v_string.str,
+                           lhs.data.v_string.len) == 0;
+    case NT_BOOLEAN_ARRAY:
+        if (lhs.data.arr_boolean.size != rhs.data.arr_boolean.size)
+            return 0;
+        return std::memcmp(lhs.data.arr_boolean.arr, rhs.data.arr_boolean.arr,
+                           lhs.data.arr_boolean.size *
+                           sizeof(lhs.data.arr_boolean.arr[0])) == 0;
+    case NT_DOUBLE_ARRAY:
+        if (lhs.data.arr_double.size != rhs.data.arr_double.size)
+            return 0;
+        return std::memcmp(lhs.data.arr_double.arr, rhs.data.arr_double.arr,
+                           lhs.data.arr_double.size *
+                           sizeof(lhs.data.arr_double.arr[0])) == 0;
+    case NT_STRING_ARRAY:
+    {
+        if (lhs.data.arr_string.size != rhs.data.arr_string.size)
+            return 0;
+        for (size_t i=0; i<lhs.data.arr_string.size; i++)
+        {
+            if (lhs.data.arr_string.arr[i].len !=
+                rhs.data.arr_string.arr[i].len)
+                return 0;
+            if (std::memcmp(lhs.data.arr_string.arr[i].str,
+                            rhs.data.arr_string.arr[i].str,
+                            lhs.data.arr_string.arr[i].len) != 0)
+                return 0;
+        }
+        return 1;
+    }
+    default:
+        /*assert(0 && "unknown value type");*/
+        return 0;
+    }
+}