ContextStackTrait.php

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<?php

namespace Sabre\Xml;

trait ContextStackTrait {

    public $elementMap = [];

    public $contextUri;

    public $namespaceMap = [];

    public $classMap = [];

    protected $contextStack = [];

    function pushContext() {

        $this->contextStack[] = [
            $this->elementMap,
            $this->contextUri,
            $this->namespaceMap,
            $this->classMap
        ];

    }

    function popContext() {

        list(
            $this->elementMap,
            $this->contextUri,
            $this->namespaceMap,
            $this->classMap
        ) = array_pop($this->contextStack);

    }

}