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91 lines
2.4 KiB
PHP
91 lines
2.4 KiB
PHP
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<?php
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namespace Psalm\Internal;
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use RuntimeException;
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use Throwable;
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use function defined;
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use function error_reporting;
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use function fwrite;
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use function ini_set;
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use function set_error_handler;
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use function set_exception_handler;
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use const E_ALL;
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use const E_STRICT;
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use const STDERR;
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final class ErrorHandler
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{
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/** @var bool */
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private static $exceptions_enabled = true;
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public static function install(): void
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{
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self::setErrorReporting();
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self::installErrorHandler();
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self::installExceptionHandler();
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}
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/**
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* @template T
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* @param callable():T $f
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* @return T
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*/
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public static function runWithExceptionsSuppressed(callable $f)
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{
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try {
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self::$exceptions_enabled = false;
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return $f();
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} finally {
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self::$exceptions_enabled = true;
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}
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}
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/** @psalm-suppress UnusedConstructor added to prevent instantiations */
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private function __construct()
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{
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}
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private static function setErrorReporting(): void
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{
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error_reporting(E_ALL | E_STRICT);
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ini_set('display_errors', '1');
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}
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private static function installErrorHandler(): void
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{
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set_error_handler(static function (
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int $error_code,
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string $error_message,
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string $error_filename = 'unknown',
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int $error_line = -1
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): bool {
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if (ErrorHandler::$exceptions_enabled && ($error_code & error_reporting())) {
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throw new RuntimeException(
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'PHP Error: ' . $error_message . ' in ' . $error_filename . ':' . $error_line,
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$error_code
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);
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}
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// let PHP handle suppressed errors how it sees fit
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return false;
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});
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}
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private static function installExceptionHandler(): void
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{
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/**
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* If there is an uncaught exception,
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* then print more of the backtrace than is done by default to stderr,
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* then exit with a non-zero exit code to indicate failure.
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*/
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set_exception_handler(static function (Throwable $throwable) : void {
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fwrite(STDERR, "Uncaught $throwable\n");
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$version = defined('PSALM_VERSION') ? PSALM_VERSION : '(unknown version)';
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fwrite(STDERR, "(Psalm $version crashed due to an uncaught Throwable)\n");
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exit(1);
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});
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}
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}
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