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<?php |
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/** |
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* Copyright (c) 2015-present Ganbaro Digital Ltd |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* * Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* * Neither the names of the copyright holders nor the names of his |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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* @category Libraries |
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* @package MissingBits/Types |
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* @author Stuart Herbert <[email protected]> |
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* @copyright 2015-present Ganbaro Digital Ltd www.ganbarodigital.com |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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* @link http://ganbarodigital.github.io/php-the-missing-bits |
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*/ |
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namespace GanbaroDigital\MissingBits\TypeInspectors; |
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use stdClass; |
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/** |
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* get a full list of types that a string might satisfy |
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*/ |
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class GetStringTypes |
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{ |
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/** |
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* get a full list of types that a string might satisfy |
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* |
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* @param string $item |
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* the item to examine |
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* @return string[] |
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* the list of type(s) that this item can be |
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*/ |
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public function getStringTypes($item) |
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{ |
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return self::from($item); |
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} |
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/** |
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* get a full list of types that a string might satisfy |
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* |
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* @param string $item |
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* the item to examine |
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* @return string[] |
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* the list of type(s) that this item can be |
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*/ |
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public static function from($item) |
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{ |
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// special case - we might have a coercable object |
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if (is_object($item)) { |
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return self::fromObject($item); |
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} |
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// robustness! |
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if (!is_string($item)) { |
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return []; |
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} |
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// our return list |
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$retval = []; |
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// special case - strings can be callables too |
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if (is_callable($item)) { |
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$retval['callable'] = 'callable'; |
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} |
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// special case - strings can be numbers too |
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$retval = array_merge($retval, self::detectNumbers($item)); |
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// all done |
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$retval['string'] = 'string'; |
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return $retval; |
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} |
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/** |
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* will this string co-erce to any numeric types? |
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* |
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* @param string $item |
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* the item to examine |
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* @return string[] |
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*/ |
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private static function detectNumbers($item) |
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{ |
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// what do we think this might be? |
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$retval = GetNumericType::from($item); |
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// special case - return an empty list if the string |
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// isn't numeric at all |
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if ($retval === null) { |
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return []; |
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} |
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// if we get here, then $item will coerce to a PHP numeric type :) |
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return [ $retval => $retval ]; |
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} |
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private static function fromObject($item) |
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{ |
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// does this object support being converted to a string? |
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if (method_exists($item, '__toString')) { |
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return [ 'string' => 'string' ]; |
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} |
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// no, it does not |
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return []; |
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} |
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} |
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ganbarodigital /
php-the-missing-bits
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