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<?php |
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declare(strict_types=1); |
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namespace GraphQL\Error; |
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use GraphQL\Exception\InvalidArgument; |
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use function is_int; |
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use function trigger_error; |
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use const E_USER_WARNING; |
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/** |
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* Encapsulates warnings produced by the library. |
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* |
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* Warnings can be suppressed (individually or all) if required. |
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* Also it is possible to override warning handler (which is **trigger_error()** by default) |
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*/ |
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final class Warning |
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{ |
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public const WARNING_ASSIGN = 2; |
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public const WARNING_CONFIG = 4; |
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public const WARNING_FULL_SCHEMA_SCAN = 8; |
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public const WARNING_CONFIG_DEPRECATION = 16; |
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public const WARNING_NOT_A_TYPE = 32; |
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public const ALL = 63; |
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/** @var int */ |
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private static $enableWarnings = self::ALL; |
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/** @var mixed[] */ |
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private static $warned = []; |
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/** @var callable|null */ |
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private static $warningHandler; |
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/** |
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* Sets warning handler which can intercept all system warnings. |
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* When not set, trigger_error() is used to notify about warnings. |
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* |
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* @api |
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*/ |
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public static function setWarningHandler(?callable $warningHandler = null) : void |
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{ |
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self::$warningHandler = $warningHandler; |
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} |
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/** |
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* Suppress warning by id (has no effect when custom warning handler is set) |
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* |
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* Usage example: |
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* Warning::suppress(Warning::WARNING_NOT_A_TYPE) |
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* |
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* When passing true - suppresses all warnings. |
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* |
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* @param bool|int $suppress |
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* |
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* @api |
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*/ |
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public static function suppress($suppress = true) : void |
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{ |
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if ($suppress === true) { |
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self::$enableWarnings = 0; |
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} elseif ($suppress === false) { |
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self::$enableWarnings = self::ALL; |
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} elseif (is_int($suppress)) { |
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self::$enableWarnings &= ~$suppress; |
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} else { |
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throw InvalidArgument::fromExpectedTypeAndArgument('bool|int', $suppress); |
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} |
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} |
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/** |
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* Re-enable previously suppressed warning by id |
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* |
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* Usage example: |
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* Warning::suppress(Warning::WARNING_NOT_A_TYPE) |
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* |
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* When passing true - re-enables all warnings. |
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* |
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* @param bool|int $enable |
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* |
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* @api |
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*/ |
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public static function enable($enable = true) : void |
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{ |
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if ($enable === true) { |
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self::$enableWarnings = self::ALL; |
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} elseif ($enable === false) { |
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self::$enableWarnings = 0; |
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} elseif (is_int($enable)) { |
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self::$enableWarnings |= $enable; |
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} else { |
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throw InvalidArgument::fromExpectedTypeAndArgument('bool|int', $enable); |
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} |
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} |
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public static function warnOnce(string $errorMessage, int $warningId, ?int $messageLevel = null) : void |
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{ |
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$messageLevel = $messageLevel ?: E_USER_WARNING; |
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if (self::$warningHandler !== null) { |
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$fn = self::$warningHandler; |
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$fn($errorMessage, $warningId, $messageLevel); |
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} elseif ((self::$enableWarnings & $warningId) > 0 && ! isset(self::$warned[$warningId])) { |
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self::$warned[$warningId] = true; |
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trigger_error($errorMessage, $messageLevel); |
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} |
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} |
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public static function warn(string $errorMessage, int $warningId, ?int $messageLevel = null) : void |
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{ |
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$messageLevel = $messageLevel ?: E_USER_WARNING; |
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if (self::$warningHandler !== null) { |
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$fn = self::$warningHandler; |
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$fn($errorMessage, $warningId, $messageLevel); |
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} elseif ((self::$enableWarnings & $warningId) > 0) { |
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trigger_error($errorMessage, $messageLevel); |
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} |
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} |
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} |
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