CelerityPostprocessor.php
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CelerityPostprocessor.php
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	<?php

	abstract class CelerityPostprocessor
	extends Phobject {

	private $default;

	abstract public function getPostprocessorKey();
	abstract public function getPostprocessorName();
	abstract public function buildVariables();

	public function buildDefaultPostprocessor() {
	return new CelerityDefaultPostprocessor();
	}

	final public function getVariables() {
	$variables = $this->buildVariables();

	$default = $this->getDefault();
	if ($default) {
	$variables += $default->getVariables();
	}

	return $variables;
	}

	final public function getDefault() {
	if ($this->default === null) {
	$this->default = $this->buildDefaultPostprocessor();
	}
	return $this->default;
	}

	final public static function getPostprocessor($key) {
	return idx(self::getAllPostprocessors(), $key);
	}

	final public static function getAllPostprocessors() {
	return id(new PhutilClassMapQuery())
	->setAncestorClass(__CLASS__)
	->setUniqueMethod('getPostprocessorKey')
	->execute();
	}

	}