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                                                        @@ -27,13 +27,13 @@  | 
                                                    
                                                    
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                                                         block discarded – undo  | 
                                                    
                                                                                                                                                                                                                    
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                                                                     ) { | 
                                                        
                                                                                                            
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                                                                         $operatorStack->push($lexerToken);  | 
                                                        
                                                                                                            
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                                                                     } elseif ($lexerToken->isToken(TokenMap::TOKEN_BRACKET_CLOSE)) { | 
                                                        
                                                                                                            
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                                                            -            while (! $operatorStack->top()->isToken(TokenMap::TOKEN_BRACKET_OPEN)) { | 
                                                        
                                                                                                            
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                                                            +            while (!$operatorStack->top()->isToken(TokenMap::TOKEN_BRACKET_OPEN)) { | 
                                                        
                                                                                                            
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                                                                             $this->pushOperand($operandStack, $operatorStack, $tokenMap);  | 
                                                        
                                                                                                            
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                                                                         }  | 
                                                        
                                                                                                            
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                                                                         $operatorStack->pop();  | 
                                                        
                                                                                                            
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                                                                     } else { | 
                                                        
                                                                                                            
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                                                            -            while (! $operatorStack->isEmpty() && $tokenMap->compareOperatorPrecedence($lexerToken, $operatorStack->top()) <= 0) { | 
                                                        
                                                                                                            
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                                                            +            while (!$operatorStack->isEmpty() && $tokenMap->compareOperatorPrecedence($lexerToken, $operatorStack->top()) <= 0) { | 
                                                        
                                                                                                            
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                                                                             $this->pushOperand($operandStack, $operatorStack, $tokenMap);  | 
                                                        
                                                                                                            
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                                                                         }  | 
                                                        
                                                                                                            
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