From ed8ec33eb1f4e6b08fbbcee912e757ab0cb9b82d Mon Sep 17 00:00:00 2001
From: Ben Ramsey <ben@benramsey.com>
Date: Fri, 4 Jan 2013 21:58:47 -0600
Subject: [PATCH] Adding hasBigNumber() and is64BitSystem() helper methods

---
 composer.json                   |  6 ++--
 src/Rhumsaa/Uuid/Uuid.php       | 35 +++++++++++++++++++++++
 tests/Rhumsaa/Uuid/UuidTest.php | 49 ++++++++++++++++++++++++++++-----
 3 files changed, 81 insertions(+), 9 deletions(-)

diff --git a/composer.json b/composer.json
index 59ea75d..e02f57b 100644
--- a/composer.json
+++ b/composer.json
@@ -23,10 +23,12 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "doctrine/dbal": ">=2.3"
+        "doctrine/dbal": ">=2.3",
+        "moontoast/math": "dev-master"
     },
     "suggest": {
-        "doctrine/dbal": "Allow the use of a UUID as doctrine field type."
+        "doctrine/dbal": "Allow the use of a UUID as doctrine field type.",
+        "moontoast/math": "Provides support for large integers on 32-bit platforms."
     },
     "autoload": {
         "psr-0": {"Rhumsaa\\Uuid": "src/"}
diff --git a/src/Rhumsaa/Uuid/Uuid.php b/src/Rhumsaa/Uuid/Uuid.php
index 36c9f20..50e98f4 100644
--- a/src/Rhumsaa/Uuid/Uuid.php
+++ b/src/Rhumsaa/Uuid/Uuid.php
@@ -73,6 +73,21 @@ class Uuid
      */
     const RESERVED_FUTURE = 7;
 
+    /**
+     * 64-bit system override; if true, treat the system as 32-bit (for testing)
+     *
+     * @var bool
+     */
+    public static $force32Bit = false;
+
+    /**
+     * Moontoast\Math\BigNumber override; if true, treat as if BigNumber is
+     * not available (for testing)
+     *
+     * @var bool
+     */
+    public static $forceNoBigNumber = false;
+
     /**
      * System override to ignore generating node from hardware (for testing)
      *
@@ -761,6 +776,26 @@ class Uuid
         return $node;
     }
 
+    /**
+     * Returns true if the system has Moontoast\Math\BigNumber
+     *
+     * @return bool
+     */
+    protected static function hasBigNumber()
+    {
+        return (class_exists('Moontoast\Math\BigNumber') && !self::$forceNoBigNumber);
+    }
+
+    /**
+     * Returns true if the system is 64-bit, false otherwise
+     *
+     * @return bool
+     */
+    protected static function is64BitSystem()
+    {
+        return (PHP_INT_SIZE == 8 && !self::$force32Bit);
+    }
+
     /**
      * Returns a version 3 or 5 UUID based on the hash (md5 or sha1) of a
      * namespace identifier (which is a UUID) and a name (which is a string)
diff --git a/tests/Rhumsaa/Uuid/UuidTest.php b/tests/Rhumsaa/Uuid/UuidTest.php
index 788dcb3..d027edc 100644
--- a/tests/Rhumsaa/Uuid/UuidTest.php
+++ b/tests/Rhumsaa/Uuid/UuidTest.php
@@ -7,13 +7,8 @@ class UuidTest extends TestCase
 {
     protected function setUp()
     {
-        // Skip these tests if run on a 32-bit build of PHP
-        if (PHP_INT_SIZE == 4) {
-            $this->markTestSkipped(
-                'Running tests on a 32-bit build of PHP; 64-bit build required.'
-            );
-        }
-
+        Uuid::$force32Bit = false;
+        Uuid::$forceNoBigNumber = false;
         Uuid::$ignoreSystemNode = false;
     }
 
@@ -702,6 +697,46 @@ class UuidTest extends TestCase
         $this->assertFalse($uuid1->equals(null));
         $this->assertFalse($uuid1->equals(new \stdClass()));
     }
+
+    /**
+     * @covers Rhumsaa\Uuid\Uuid::hasBigNumber
+     */
+    public function testHasBigNumber()
+    {
+        $hasBigNumber = new \ReflectionMethod(
+            'Rhumsaa\Uuid\Uuid', 'hasBigNumber'
+        );
+        $hasBigNumber->setAccessible(true);
+
+        $uuid = Uuid::fromString('ff6f8cb0-c57d-11e1-9b21-0800200c9a66');
+
+        $this->assertTrue($hasBigNumber->invoke($uuid));
+
+        Uuid::$forceNoBigNumber = true;
+        $this->assertFalse($hasBigNumber->invoke($uuid));
+    }
+
+    /**
+     * @covers Rhumsaa\Uuid\Uuid::is64BitSystem
+     */
+    public function testIs64BitSystem()
+    {
+        $is64BitSystem = new \ReflectionMethod(
+            'Rhumsaa\Uuid\Uuid', 'is64BitSystem'
+        );
+        $is64BitSystem->setAccessible(true);
+
+        $uuid = Uuid::fromString('ff6f8cb0-c57d-11e1-9b21-0800200c9a66');
+
+        if (PHP_INT_SIZE == 8) {
+            $this->assertTrue($is64BitSystem->invoke($uuid));
+        } else {
+            $this->assertFalse($is64BitSystem->invoke($uuid));
+        }
+
+        Uuid::$force32Bit = true;
+        $this->assertFalse($is64BitSystem->invoke($uuid));
+    }
 }
 
 /**