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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace SCI;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use SMW\ApplicationFactory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use SMW\NamespaceExaminer;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use SMW\ParameterProcessorFactory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use SCI\Bibtex\BibtexProcessor;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use SCI\Bibtex\BibtexParser;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use SCI\Bibtex\BibtexAuthorListParser;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license GNU GPL v2+  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since 1.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author mwjames  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                class ParserFunctionFactory { | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * {{#scite:}} | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @since  1.0  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param NamespaceExaminer $namespaceExaminer  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param Options $options  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @return array  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function newSciteParserFunctionDefinition( NamespaceExaminer $namespaceExaminer, Options $options ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$sciteParserFunctionDefinition = function( $parser ) use( $namespaceExaminer, $options ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$parserData = ApplicationFactory::getInstance()->newParserData(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$parser->getTitle(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$parser->getOutput()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$mwCollaboratorFactory = ApplicationFactory::getInstance()->newMwCollaboratorFactory();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$citationTextTemplateRenderer = new CitationTextTemplateRenderer(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$mwCollaboratorFactory->newWikitextTemplateRenderer(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$parser  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$mediaWikiNsContentMapper = new MediaWikiNsContentMapper(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$mwCollaboratorFactory->newMediaWikiNsContentReader()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$sciteParserFunction = new SciteParserFunction(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$parserData,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$namespaceExaminer,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$citationTextTemplateRenderer,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$mediaWikiNsContentMapper,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				new BibtexProcessor( new BibtexParser(), new BibtexAuthorListParser() )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$sciteParserFunction->setStrictParserValidationState(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$options->get( 'enabledStrictParserValidation' )  | 
            
                            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return $sciteParserFunction->doProcess(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				ParameterProcessorFactory::newFromArray( func_get_args() ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				new PreTextFormatter()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		};  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return [ 'scite', $sciteParserFunctionDefinition, 0 ];  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * {{#referencelist:}} | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @since  1.0  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @return array  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function newReferenceListParserFunctionDefinition() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$referenceListParserFunctionDefinition = function( $parser ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$parserData = ApplicationFactory::getInstance()->newParserData(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$parser->getTitle(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$parser->getOutput()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$referenceListParserFunction = new ReferenceListParserFunction( $parserData );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return $referenceListParserFunction->doProcess(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				ParameterProcessorFactory::newFromArray( func_get_args() )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		};  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return [ 'referencelist', $referenceListParserFunctionDefinition, 0 ];  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: