phingofficial /
phing
| Total Complexity | 56 |
| Total Lines | 266 |
| Duplicated Lines | 0 % |
| Coverage | 86.67% |
| Changes | 0 | ||
Complex classes like PgsqlPDOQuerySplitter often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use PgsqlPDOQuerySplitter, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 34 | class PgsqlPDOQuerySplitter extends PDOQuerySplitter |
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| 35 | { |
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| 36 | /**#@+ |
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| 37 | * Lexer states |
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| 38 | */ |
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| 39 | public const STATE_NORMAL = 0; |
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| 40 | public const STATE_SINGLE_QUOTED = 1; |
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| 41 | public const STATE_DOUBLE_QUOTED = 2; |
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| 42 | public const STATE_DOLLAR_QUOTED = 3; |
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| 43 | public const STATE_COMMENT_LINEEND = 4; |
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| 44 | public const STATE_COMMENT_MULTILINE = 5; |
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| 45 | public const STATE_BACKSLASH = 6; |
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| 46 | /**#@-*/ |
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| 47 | |||
| 48 | /** |
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| 49 | * Nesting depth of current multiline comment |
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| 50 | * |
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| 51 | * @var int |
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| 52 | */ |
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| 53 | protected $commentDepth = 0; |
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| 54 | |||
| 55 | /** |
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| 56 | * Current dollar-quoting "tag" |
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| 57 | * |
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| 58 | * @var string |
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| 59 | */ |
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| 60 | protected $quotingTag = ''; |
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| 61 | |||
| 62 | /** |
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| 63 | * Current lexer state, one of STATE_* constants |
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| 64 | * |
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| 65 | * @var int |
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| 66 | */ |
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| 67 | protected $state = self::STATE_NORMAL; |
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| 68 | |||
| 69 | /** |
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| 70 | * Whether a backslash was just encountered in quoted string |
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| 71 | * |
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| 72 | * @var bool |
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| 73 | */ |
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| 74 | protected $escape = false; |
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| 75 | |||
| 76 | /** |
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| 77 | * Current source line being examined |
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| 78 | * |
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| 79 | * @var string |
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| 80 | */ |
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| 81 | protected $line = ''; |
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| 82 | |||
| 83 | /** |
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| 84 | * Position in current source line |
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| 85 | * |
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| 86 | * @var int |
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| 87 | */ |
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| 88 | protected $inputIndex; |
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| 89 | |||
| 90 | /** |
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| 91 | * Gets next symbol from the input, false if at end |
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| 92 | * |
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| 93 | * @return string|bool |
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| 94 | */ |
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| 95 | 1 | public function getc() |
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| 96 | { |
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| 97 | 1 | if (!strlen($this->line) || $this->inputIndex >= strlen($this->line)) { |
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| 98 | 1 | if (null === ($line = $this->sqlReader->readLine())) { |
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| 99 | 1 | return false; |
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| 100 | } |
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| 101 | 1 | $project = $this->parent->getOwningTarget()->getProject(); |
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| 102 | 1 | $this->line = $project->replaceProperties($line) . "\n"; |
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| 103 | 1 | $this->inputIndex = 0; |
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| 104 | } |
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| 105 | |||
| 106 | 1 | return $this->line[$this->inputIndex++]; |
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| 107 | } |
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| 108 | |||
| 109 | /** |
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| 110 | * Bactracks one symbol on the input |
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| 111 | * |
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| 112 | * NB: we don't need ungetc() at the start of the line, so this case is |
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| 113 | * not handled. |
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| 114 | */ |
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| 115 | 1 | public function ungetc() |
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| 116 | { |
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| 117 | 1 | $this->inputIndex--; |
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| 118 | 1 | } |
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| 119 | |||
| 120 | /** |
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| 121 | * Checks whether symbols after $ are a valid dollar-quoting tag |
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| 122 | * |
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| 123 | * @return string|bool Dollar-quoting "tag" if it is present, false otherwise |
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| 124 | */ |
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| 125 | 1 | protected function checkDollarQuote() |
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| 126 | { |
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| 127 | 1 | $ch = $this->getc(); |
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| 128 | 1 | if ('$' === $ch) { |
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| 129 | // empty tag |
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| 130 | 1 | return ''; |
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| 131 | } |
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| 132 | |||
| 133 | 1 | if (!ctype_alpha($ch) && '_' !== $ch) { |
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| 134 | // not a delimiter |
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| 135 | 1 | $this->ungetc(); |
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| 136 | |||
| 137 | 1 | return false; |
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| 138 | } |
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| 139 | |||
| 140 | 1 | $tag = $ch; |
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| 141 | 1 | while (false !== ($ch = $this->getc())) { |
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| 142 | 1 | if ('$' === $ch) { |
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| 143 | 1 | return $tag; |
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| 144 | } |
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| 145 | |||
| 146 | 1 | if (ctype_alnum($ch) || '_' === $ch) { |
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| 147 | 1 | $tag .= $ch; |
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| 148 | } else { |
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| 149 | for ($i = 0, $tagLength = strlen($tag); $i < $tagLength; $i++) { |
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|
Bug
introduced
by
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| 150 | $this->ungetc(); |
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| 151 | } |
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| 152 | |||
| 153 | return false; |
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| 154 | } |
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| 155 | } |
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| 156 | |||
| 157 | return $tag; |
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| 158 | } |
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| 159 | |||
| 160 | /** |
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| 161 | * @return null|string |
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| 162 | */ |
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| 163 | 1 | public function nextQuery() |
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| 300 | } |
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| 301 | } |
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| 302 |
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