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<?php |
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declare(strict_types=1); |
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namespace GraphQL\Type\Definition; |
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use Exception; |
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use GraphQL\Error\Error; |
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use GraphQL\Language\AST\IntValueNode; |
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use GraphQL\Language\AST\Node; |
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use GraphQL\Utils\Utils; |
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use function floatval; |
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use function floor; |
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use function intval; |
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use function is_array; |
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use function is_bool; |
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use function is_float; |
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use function is_int; |
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use function is_numeric; |
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use function sprintf; |
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class IntType extends ScalarType |
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{ |
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// As per the GraphQL Spec, Integers are only treated as valid when a valid |
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// 32-bit signed integer, providing the broadest support across platforms. |
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// |
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// n.b. JavaScript's integers are safe between -(2^53 - 1) and 2^53 - 1 because |
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// they are internally represented as IEEE 754 doubles. |
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private const MAX_INT = 2147483647; |
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private const MIN_INT = -2147483648; |
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/** @var string */ |
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public $name = Type::INT; |
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/** @var string */ |
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public $description = |
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'The `Int` scalar type represents non-fractional signed whole numeric |
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values. Int can represent values between -(2^31) and 2^31 - 1. '; |
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/** |
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* @param mixed $value |
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* |
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* @return int|null |
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* |
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* @throws Error |
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*/ |
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public function serialize($value) |
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{ |
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// Fast path for 90+% of cases: |
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if (is_int($value) && $value <= self::MAX_INT && $value >= self::MIN_INT) { |
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return $value; |
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} |
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$float = is_numeric($value) || is_bool($value) ? floatval($value) : null; |
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if ($float === null || floor($float) !== $float) { |
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throw new Error( |
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'Int cannot represent non-integer value: ' . |
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Utils::printSafe($value) |
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); |
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} |
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if ($float > self::MAX_INT || $float < self::MIN_INT) { |
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throw new Error( |
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'Int cannot represent non 32-bit signed integer value: ' . |
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Utils::printSafe($value) |
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); |
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} |
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return intval($float); |
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} |
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/** |
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* @param mixed $value |
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* |
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* @return int|null |
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* |
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* @throws Error |
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*/ |
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public function parseValue($value) |
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{ |
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$isInt = is_int($value) || (is_float($value) && floor($value) === $value); |
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if (! $isInt) { |
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throw new Error( |
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'Int cannot represent non-integer value: ' . |
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Utils::printSafe($value) |
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); |
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} |
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if ($value > self::MAX_INT || $value < self::MIN_INT) { |
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throw new Error( |
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'Int cannot represent non 32-bit signed integer value: ' . |
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Utils::printSafe($value) |
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); |
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} |
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return intval($value); |
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} |
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/** |
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* @param Node $valueNode |
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* @param mixed[]|null $variables |
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* |
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* @return int|null |
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* |
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* @throws Exception |
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*/ |
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public function parseLiteral($valueNode, ?array $variables = null) |
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{ |
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if ($valueNode instanceof IntValueNode) { |
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$val = (int) $valueNode->value; |
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if ($valueNode->value === (string) $val && self::MIN_INT <= $val && $val <= self::MAX_INT) { |
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return $val; |
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} |
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} |
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// Intentionally without message, as all information already in wrapped Exception |
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throw new Exception(); |
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} |
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} |
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webonyx /
graphql-php
