Iterator を実装した。これで foreach が使える。

yoya · Oct 12, 2015 · db05a27 · db05a27
1 parent 77c838d
commit db05a27
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Showing 2 changed files with 51 additions and 1 deletion.
diff --git a/Array/Typed.php b/Array/Typed.php
@@ -5,13 +5,15 @@
   Array_Typed version 1.0.3
 */
 
-abstract class Array_Typed implements ArrayAccess, Countable {
+abstract class Array_Typed implements ArrayAccess, Countable, Iterator {
     protected $container;
     protected $arraySize;
+    private $iterPos;
     // protected $typeSize;
     function __construct($n) {
         $this->arraySize = $n;
         $this->container = str_repeat("\0",  $n * $this->typeSize);
+        $this->iterPos = 0;
     }
     //
     function toArray() {
@@ -37,6 +39,22 @@ public function getSize() {
     public function count() {
         return $this->arraySize;
     }
+    // Iterator
+    public function rewind() {
+        $this->iterPos = 0;
+    }
+    public function current() {
+        return $this->_offsetGet($this->iterPos);
+    }
+    public function key() {
+        return $this->iterPos;
+    }
+    function next() {
+        $this->iterPos++;
+    }
+    function valid() {
+        return $this->offsetExists($this->iterPos);
+    }
     //
     public function offsetExists($offset) {
         if (($offset < 0) || ($this->arraySize <= $offset)) {

diff --git a/test/iter_test.php b/test/iter_test.php
@@ -0,0 +1,32 @@
+<?php
+
+if (is_readable('vendor/autoload.php')) {
+    require 'vendor/autoload.php';
+} else {
+    require_once 'Array/Sint8.php';
+}
+
+echo "Array_Sint8(0)".PHP_EOL;
+$arr = new Array_Sint8(0);
+foreach ($arr as $e) {
+    var_dump($e);
+}
+echo "Array_Sint8(7)".PHP_EOL;
+$arr = new Array_Sint8(7);
+foreach ($arr as $e) {
+    var_dump($e);
+}
+
+
+$a = array_pad([], 10, 0);
+$a[0] = -1;
+$a[8] = -8;
+$a[9] = 9;
+echo "Array_Sint8::fromArray".PHP_EOL;
+$arr = Array_Sint8::fromArray($a);
+foreach ($arr as $e) {
+    var_dump($e);
+}
+foreach ($arr as $e) {
+    var_dump($e);
+}