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1 <?php
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2
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3 /*
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4 * This file is part of composer/semver.
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5 *
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6 * (c) Composer <https://github.com/composer>
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7 *
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8 * For the full copyright and license information, please view
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9 * the LICENSE file that was distributed with this source code.
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10 */
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11
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12 namespace Composer\Semver\Constraint;
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13
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14 /**
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15 * Defines the absence of a constraint.
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16 */
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17 class EmptyConstraint implements ConstraintInterface
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18 {
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19 /** @var string */
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20 protected $prettyString;
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21
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22 /**
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23 * @param ConstraintInterface $provider
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24 *
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25 * @return bool
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26 */
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27 public function matches(ConstraintInterface $provider)
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28 {
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29 return true;
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30 }
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31
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32 /**
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33 * @param $prettyString
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34 */
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35 public function setPrettyString($prettyString)
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36 {
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37 $this->prettyString = $prettyString;
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38 }
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39
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40 /**
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41 * @return string
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42 */
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43 public function getPrettyString()
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44 {
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45 if ($this->prettyString) {
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46 return $this->prettyString;
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47 }
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48
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49 return $this->__toString();
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50 }
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51
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52 /**
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53 * @return string
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54 */
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55 public function __toString()
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56 {
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57 return '[]';
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58 }
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59 }
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