Accept Long-like object in constructor, fixes #8

dist/Long.js

@@ -44,12 +44,18 @@
      * 
      * @exports Long
      * @class A Long class for representing a 64-bit two's-complement integer value.
-     * @param {number} low The low (signed) 32 bits of the long.
-     * @param {number} high The high (signed) 32 bits of the long.
+     * @param {number|!{low: number, high: number, unsigned: boolean}} low The low (signed) 32 bits of the long.
+     *  Optionally accepts a Long-like object as the first parameter.
+     * @param {number=} high The high (signed) 32 bits of the long.
      * @param {boolean=} unsigned Whether unsigned or not. Defaults to `false` (signed).
      * @constructor
      */
     var Long = function(low, high, unsigned) {
+        if (low && typeof low === 'object') {
+            high = low.high;
+            unsigned = low.unsigned;
+            low = low.low;
+        }
 
         /**
          * The low 32 bits as a signed value.

docs/Long.html

@@ -41,7 +41,7 @@ <h2>
 
 
 <dt>
-    <h4 class="name" id="Long"><span class="type-signature"></span>new Long<span class="signature">(low, high, <span class="optional">unsigned</span>)</span><span class="type-signature"></span></h4>
+    <h4 class="name" id="Long"><span class="type-signature"></span>new Long<span class="signature">(low, <span class="optional">high</span>, <span class="optional">unsigned</span>)</span><span class="type-signature"></span></h4>
 
 
 </dt>
@@ -92,6 +92,9 @@ <h5>Parameters:</h5>
 
 
 <span class="param-type">number</span>
+|
+
+<span class="param-type">!{low: number, high: number, unsigned: boolean}</span>
 
 
 
@@ -107,7 +110,7 @@ <h5>Parameters:</h5>
 
 
 
-            <td class="description last">The low (signed) 32 bits of the long.</td>
+            <td class="description last">The low (signed) 32 bits of the long. Optionally accepts a Long-like object as the first parameter.</td>
         </tr>
 
 
@@ -129,6 +132,8 @@ <h5>Parameters:</h5>
 
                 <td class="attributes">
 
+                    &lt;optional><br>
+
 
 
                 </td>

externs/Long.js

@@ -27,8 +27,8 @@
  */
 
 /**
- * @param {number} low
- * @param {number} high
+ * @param {number|!{low: number, high: number, unsigned: boolean}} low
+ * @param {number=} high
  * @param {boolean=} unsigned
  * @constructor
  */

package.json

@@ -1,6 +1,6 @@
 {
     "name": "long",
-    "version": "1.1.3",
+    "version": "1.1.4",
     "author": "Daniel Wirtz <dcode@dcode.io>",
     "description": "A Long class for representing a 64-bit two's-complement integer value.",
     "main": "index.js",

src/Long.js

@@ -44,12 +44,18 @@
      * 
      * @exports Long
      * @class A Long class for representing a 64-bit two's-complement integer value.
-     * @param {number} low The low (signed) 32 bits of the long.
-     * @param {number} high The high (signed) 32 bits of the long.
+     * @param {number|!{low: number, high: number, unsigned: boolean}} low The low (signed) 32 bits of the long.
+     *  Optionally accepts a Long-like object as the first parameter.
+     * @param {number=} high The high (signed) 32 bits of the long.
      * @param {boolean=} unsigned Whether unsigned or not. Defaults to `false` (signed).
      * @constructor
      */
     var Long = function(low, high, unsigned) {
+        if (low && typeof low === 'object') {
+            high = low.high;
+            unsigned = low.unsigned;
+            low = low.low;
+        }
 
         /**
          * The low 32 bits as a signed value.

tests/suite.js

@@ -25,6 +25,10 @@ var suite = {
         var longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF);
         test.equal(longVal.toNumber(), 9223372036854775807);
         test.equal(longVal.toString(), "9223372036854775807");
+        var longVal2 = new Long(longVal);
+        test.equal(longVal2.toNumber(), 9223372036854775807);
+        test.equal(longVal2.toString(), "9223372036854775807");
+        test.equal(longVal2.unsigned, longVal.unsigned);
         test.done();
     },