Files
linguist/samples/Hack/error.hh
Josh Watzman b2cb74cabf Add detection for Hack files with ".hh" file extension
Hack is Facebook's dialect of PHP: http://hacklang.org/. This adds support for detecting it via the ".hh" file extension; although that extension techincally conflicts with C++ headers, the files look different enough that the existing classifier based on sample code has no trouble distinguising them.

This diff deliberately does not deal with detecting ".php" as another valid extension for Hack code. That's much trickier since the code looks basically identical to PHP to the classifier, and needs a different approach.
2014-10-21 15:35:57 -07:00

44 lines
1.1 KiB
C++

<?hh
/**
* Copyright (c) 2014, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
final class TypehintViolationException extends Exception {
}
function setup_errors(): void {
set_error_handler('handle_error', E_ALL);
}
/**
* I want to turn failed typehints into exceptions so that I can handle them in
* my example code
*/
function handle_error(
$errno,
$errstr,
$errfile,
$errline,
$errcontext = array(),
$errtrace = array(),
): bool {
if (E_RECOVERABLE_ERROR == $errno) {
// Transform typehint failures into an exception.
if (strpos($errstr, 'must be an instance of ') !== false) {
throw new TypehintViolationException($errstr);
}
// Transform nullable type violations to exceptions.
if ((strpos($errstr, 'must be of type ?') !== false) &&
(strpos($errstr, 'Value returned from') === false)) {
throw new TypehintViolationException($errstr);
}
}
return false;
}