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phorge-phorge/src/view/AphrontView.php
vrana 4682e0c104 Warn against writing to undeclared properties
Summary:
I make this error quite often: I forget to declare a property I am writing to or I make a typo in it.
PHP implicitly creates a public property which I don't like.

I would much rather see a linter warning me against this than this runtime check but writing it is very difficult:

- We need to explore all parents of the class we are checking.
- It is even possible that children will declare that property but it's OK to treat this as error anyway.
- We can extend also builtin or external classes.
- It's somewhat doable for `$this` but even more complex for any `$obj` because we don't know the class of it.

This should catch significant part of these errors and I'm fine with that.

I don't plan escalating to exception because this error is not fatal and should not stop the application from working.

Test Plan: Loaded homepage, checked log.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3601
2012-10-03 11:54:03 -07:00

57 lines
1.5 KiB
PHP

<?php
/*
* Copyright 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
abstract class AphrontView {
protected $children = array();
final public function appendChild($child) {
$this->children[] = $child;
return $this;
}
final protected function renderChildren() {
$out = array();
foreach ($this->children as $child) {
$out[] = $this->renderSingleView($child);
}
return implode('', $out);
}
final protected function renderSingleView($child) {
if ($child instanceof AphrontView) {
return $child->render();
} else if (is_array($child)) {
$out = array();
foreach ($child as $element) {
$out[] = $this->renderSingleView($element);
}
return implode('', $out);
} else {
return $child;
}
}
abstract public function render();
public function __set($name, $value) {
phlog('Wrote to undeclared property '.get_class($this).'::$'.$name.'.');
$this->$name = $value;
}
}