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- <?php
-
- /**
- * Static class to handle a slot-listening system.
- *
- * Unlike the slots/signals Qt model, this class manages something that is
- * more like a simple hashtable, where each slot has only one value. For that
- * reason "Registers" makes more sense, the reference being to CPU registers.
- *
- * This could be used for anything, but it's been built for a pretty specific phing
- * need, and that is to allow access to dynamic values that are set by logic
- * that is not represented in a build file. For exampe, we need a system for getting
- * the current resource (file) that is being processed by a filterchain in a fileset.
- *
- * Each slot corresponds to only one read-only, dynamic-value RegisterSlot object. In
- * a build.xml register slots are expressed using a syntax similar to variables:
- *
- * <replaceregexp>
- * <regexp pattern="\n" replace="%{task.current_file}"/>
- * </replaceregexp>
- *
- * The task/type must provide a supporting setter for the attribute:
- *
- * <code>
- * function setListeningReplace(RegisterSlot $slot) {
- * $this->replace = $slot;
- * }
- *
- * // in main()
- * if ($this->replace instanceof RegisterSlot) {
- * $this->regexp->setReplace($this->replace->getValue());
- * } else {
- * $this->regexp->setReplace($this->replace);
- * }
- * </code>
- *
- * @author Hans Lellelid <hans@xmpl.org>
- * @version $Revision: 1.3 $
- * @package phing.system.util
- */
- class Register {
-
- /** Slots that have been registered */
- private static $slots = array();
-
- /**
- * Returns RegisterSlot for specified key.
- *
- * If not slot exists a new one is created for key.
- *
- * @param string $key
- * @return RegisterSlot
- */
- public static function getSlot($key) {
- if (!isset(self::$slots[$key])) {
- self::$slots[$key] = new RegisterSlot($key);
- }
- return self::$slots[$key];
- }
- }
-
-
- /**
- * Represents a slot in the register.
- */
- class RegisterSlot {
-
- /** The name of this slot. */
- private $key;
-
- /** The value for this slot. */
- private $value;
-
- /**
- * Constructs a new RegisterSlot, setting the key to passed param.
- * @param string $key
- */
- public function __construct($key) {
- $this->key = (string) $key;
- }
-
- /**
- * Sets the key / name for this slot.
- * @param string $k
- */
- public function setKey($k) {
- $this->key = (string) $k;
- }
-
- /**
- * Gets the key / name for this slot.
- * @return string
- */
- public function getKey() {
- return $this->key;
- }
-
- /**
- * Sets the value for this slot.
- * @param mixed
- */
- public function setValue($v) {
- $this->value = $v;
- }
-
- /**
- * Returns the value at this slot.
- * @return mixed
- */
- public function getValue() {
- return $this->value;
- }
-
- }
- ?>
-