Fix nullptr support again, remove custom implementation

CHANGELOG.md

@@ -7,14 +7,19 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 ### Added
+- Proper `ostream operator <<` for `nullptr`
+- Proper comparison operations fro `nullptr`
 
 ### Changed
+- `Compare.h` heavily refactored to use a smallish macro
 
 ### Deprecated
 
 ### Removed
+- Homegrown implementation of `nullptr`
 
 ### Fixed
+- `nullptr` support (again)
 
 ### Security
 

SampleProjects/TestSomething/test-something.cpp

@@ -3,3 +3,8 @@ int testSomething(void) {
   millis();  // this line is only here to test that we're able to refer to the builtins
   return 4;
 };
+
+int* aNullPointer(void) {
+  int* ret = nullptr;
+  return ret;
+}

SampleProjects/TestSomething/test-something.h

@@ -1,3 +1,4 @@
 #pragma once
 #include <Arduino.h>
 int testSomething(void);
+int *aNullPointer(void);

SampleProjects/TestSomething/test/library.cpp

@@ -6,4 +6,9 @@ unittest(library_tests_something)
   assertEqual(4, testSomething());
 }
 
+unittest(library_returns_nullptr)
+{
+  assertEqual(nullptr, aNullPointer());
+}
+
 unittest_main()

cpp/arduino/Arduino.h

@@ -15,7 +15,6 @@ Where possible, variable names from the Arduino library are used to avoid confli
 #include "Stream.h"
 #include "HardwareSerial.h"
 #include "SPI.h"
-#include "Nullptr.h"
 
 typedef bool boolean;
 typedef uint8_t byte;

cpp/unittest/ArduinoUnitTests.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "OstreamHelpers.h"
 #include "Assertion.h"
 #include <iostream>
 using namespace std;