Assertion.php

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<?php

class SimpleSAML_Error_Assertion extends SimpleSAML_Error_Exception {


        private $assertion;


        public function __construct($assertion = NULL) {
                assert('is_null($assertion) || is_string($assertion)');

                $msg = 'Assertion failed: ' . var_export($assertion, TRUE);
                parent::__construct($msg);

                $this->assertion = $assertion;
        }


        public function getAssertion() {
                return $this->assertion;
        }


        public static function installHandler() {

                assert_options(ASSERT_WARNING,    0);
                assert_options(ASSERT_QUIET_EVAL, 0);
                assert_options(ASSERT_CALLBACK,   array('SimpleSAML_Error_Assertion', 'onAssertion'));
        }


        public static function onAssertion($file, $line, $message) {

                if(!empty($message)) {
                        $exception = new self($message);
                } else {
                        $exception = new self();
                }

                $exception->logError();
        }

}