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<?php
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namespace Sabberworm\CSS\RuleSet;
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use Sabberworm\CSS\OutputFormat;
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use Sabberworm\CSS\Property\AtRule;
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/**
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 * A RuleSet constructed by an unknown at-rule. `@font-face` rules are rendered into AtRuleSet objects.
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 */
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class AtRuleSet extends RuleSet implements AtRule
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{
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    /**
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     * @var string
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     */
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    private $sType;
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    /**
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     * @var string
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     */
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    private $sArgs;
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    /**
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     * @param string $sType
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     * @param string $sArgs
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     * @param int $iLineNo
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     */
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    public function __construct($sType, $sArgs = '', $iLineNo = 0)
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    {
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        parent::__construct($iLineNo);
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        $this->sType = $sType;
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        $this->sArgs = $sArgs;
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    }
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    /**
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     * @return string
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     */
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    public function atRuleName()
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    {
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        return $this->sType;
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    }
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    /**
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     * @return string
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     */
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    public function atRuleArgs()
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    {
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        return $this->sArgs;
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    }
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    /**
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     * @return string
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     */
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    public function __toString()
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    {
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        return $this->render(new OutputFormat());
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    }
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    /**
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     * @return string
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     */
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    public function render(OutputFormat $oOutputFormat)
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    {
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        $sArgs = $this->sArgs;
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        if ($sArgs) {
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            $sArgs = ' ' . $sArgs;
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        }
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        $sResult = "@{$this->sType}$sArgs{$oOutputFormat->spaceBeforeOpeningBrace()}{";
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        $sResult .= parent::render($oOutputFormat);
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        $sResult .= '}';
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        return $sResult;
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    }
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}