| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | namespace Imanghafoori\LaravelMicroscope\Analyzers; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | class TokenManager | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |     public static function removeTokens($tokens, $from, $to, $at) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |         $refactoredTokens = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |         foreach ($tokens as $i => $oldToken) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |             if ($i > $from && $i <= $to) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |                 continue; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |             if ($i == $at) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |                 continue; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |             $refactoredTokens[] = $oldToken; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |         return $refactoredTokens; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |     public static function getNextToken($tokens, $i) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |         $i++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |         $token = $tokens[$i] ?? '_'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |         while ($token[0] == T_WHITESPACE || $token[0] == T_COMMENT) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |             $i++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |             $token = $tokens[$i] ?? [null, null]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |         return [$token, $i]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |     public static function getPrevToken($tokens, $i) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |         $i--; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |         $token = $tokens[$i]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |         while ($token[0] == T_WHITESPACE || $token[0] == T_COMMENT) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |             $i--; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |             $token = $tokens[$i]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |         return [$token, $i]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |     public static function forwardTo($tokens, $i, $tokenType) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |         $i++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |         $nextToken = $tokens[$i] ?? '_'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |         while (! \in_array($nextToken[0], $tokenType)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |             $i++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |             $nextToken = $tokens[$i] ?? [null, null]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |         return [$nextToken, $i]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |     public static function readBodyBack(&$tokens, $i) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |         $body = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |         $level = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |         while (true) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |             [$token, $i] = self::getPrevToken($tokens, $i); | 
                            
                    |  |  |  | 
                                                                                        
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                | 66 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |             if (\in_array($token[0], [']', ')', '}'])) { | 
                            
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                | 68 |  |  |                 $level--; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |             $isOpening = \in_array($token[0], ['[', '(', '{', T_CURLY_OPEN]); | 
                            
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                | 72 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |             if ($level == 0 && $isOpening) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |                 break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |             if ($isOpening) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |                 $level++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |             $body[] = $token; | 
                            
                    |  |  |  | 
                                                                                        
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                | 82 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |         return [$body, $i]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |     public static function readBody(&$tokens, $i, $until = '}') | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |         $body = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |         $level = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |         while (true) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |             $i++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |             $nextToken = $tokens[$i] ?? '_'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |             if ($nextToken == '_') { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |                 break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |             if ($level == 0 && $nextToken[0] == $until) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |                 break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |             if (\in_array($nextToken[0], ['[', '(', '{', T_CURLY_OPEN])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |                 $level++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |             if (\in_array($nextToken[0], [']', ')', '}'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |                 $level--; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |             $body[] = $nextToken; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  |         return [$body, $i]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 116 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 117 |  |  |     public static function readBackUntil(&$tokens, $i, $chars = ['}']) | 
            
                                                                        
                            
            
                                    
            
            
                | 118 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 119 |  |  |         $orphanBlock = []; | 
            
                                                                        
                            
            
                                    
            
            
                | 120 |  |  |         while (true) { | 
            
                                                                        
                            
            
                                    
            
            
                | 121 |  |  |             [$token, $i] = self::getPrevToken($tokens, $i); | 
                            
                    |  |  |  | 
                                                                                        
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                | 122 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 123 |  |  |             $depth = 0; | 
            
                                                                        
                            
            
                                    
            
            
                | 124 |  |  |             if (\in_array($token[0], $chars)) { | 
                            
                    |  |  |  | 
                                                                                        
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                | 125 |  |  |                 [$ifBody, $openIfIndex] = self::readBodyBack($tokens, $i); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                            
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                | 126 |  |  |                 [, $closeParenIndex] = self::getPrevToken($tokens, $openIfIndex); | 
                            
                    |  |  |  | 
                                                                                        
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                | 127 |  |  |                 [$condition, $openParenIndex] = self::readBodyBack($tokens, $closeParenIndex); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                            
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                | 128 |  |  |                 [$ownerOfClosing] = self::getPrevToken($tokens, $openParenIndex); | 
                            
                    |  |  |  | 
                                                                                        
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                | 129 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 130 |  |  |                 if ($ownerOfClosing[0] == T_IF) { | 
            
                                                                        
                            
            
                                    
            
            
                | 131 |  |  |                     break; | 
            
                                                                        
                            
            
                                    
            
            
                | 132 |  |  |                 } else { | 
            
                                                                        
                            
            
                                    
            
            
                | 133 |  |  |                     return [null, null]; | 
            
                                                                        
                            
            
                                    
            
            
                | 134 |  |  |                 } | 
            
                                                                        
                            
            
                                    
            
            
                | 135 |  |  |             } | 
            
                                                                        
                            
            
                                    
            
            
                | 136 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 137 |  |  |             if ($token[0] == '{') { | 
                            
                    |  |  |  | 
                                                                                        
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                | 138 |  |  |                 $depth--; | 
            
                                                                        
                            
            
                                    
            
            
                | 139 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 140 |  |  |                 if ($depth === -1) { | 
            
                                                                        
                            
            
                                    
            
            
                | 141 |  |  |                     return [null, null]; | 
            
                                                                        
                            
            
                                    
            
            
                | 142 |  |  |                 } | 
            
                                                                        
                            
            
                                    
            
            
                | 143 |  |  |             } | 
            
                                                                        
                            
            
                                    
            
            
                | 144 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 145 |  |  |             $orphanBlock[] = $token; | 
                            
                    |  |  |  | 
                                                                                        
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                | 146 |  |  |         } | 
            
                                                                        
                            
            
                                    
            
            
                | 147 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 148 |  |  |         return [[$ifBody, [$openIfIndex, $i]], [$condition, [$openParenIndex, $closeParenIndex]], $orphanBlock, $i]; | 
            
                                                                        
                            
            
                                    
            
            
                | 149 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |     public static function isEqual($expectedToken, $actualToken) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |         return $expectedToken[0] == $actualToken[0] && ($expectedToken[1] ?? '') == ($actualToken[1] ?? ''); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 155 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 156 |  |  |  | 
            
                        
This check looks for variables that are accessed but have not been defined. It raises an issue if it finds another variable that has a similar name.
The variable may have been renamed without also renaming all references.