| Total Complexity | 76 |
| Total Lines | 316 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like SchemaParser 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 SchemaParser, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | class SchemaParser |
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| 14 | { |
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| 15 | public const MASTER_TL_API_SOURCE_URL = 'https://raw.githubusercontent.com/tdlib/td/master/td/generate/scheme/td_api.tl'; |
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| 16 | |||
| 17 | private LoggerInterface $logger; |
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| 18 | |||
| 19 | private string $schemaFile; |
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| 20 | private string $rawSchema; |
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| 21 | private string $currentLine; |
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| 22 | private int $currentLineNr; |
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| 23 | private array $documentation; |
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| 24 | private array $classes; |
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| 25 | |||
| 26 | public function __construct(LoggerInterface $logger = null, string $schemaFile = null) |
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| 33 | } |
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| 34 | |||
| 35 | /** |
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| 36 | * @return ClassDefinition[] |
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| 37 | */ |
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| 38 | public function parse(): array |
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| 39 | { |
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| 40 | $lines = explode(PHP_EOL, $this->rawSchema); |
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| 41 | |||
| 42 | $description = ''; |
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| 43 | $currentClassName = ''; |
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| 44 | $currentClass = new ClassDefinition(); |
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| 45 | $isFunction = false; |
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| 46 | $needClassDescription = false; |
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| 47 | $this->currentLineNr = 0; |
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| 48 | |||
| 49 | foreach ($lines as $line) { |
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| 50 | $this->logger->debug('Current Line', ['line' => $line]); |
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| 51 | |||
| 52 | $this->currentLine = $line; |
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| 53 | $this->currentLineNr++; |
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| 54 | |||
| 55 | if ('---types---' === $line) { |
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| 56 | $isFunction = false; |
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| 57 | } elseif ('---functions---' === $line) { |
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| 58 | $isFunction = true; |
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| 59 | $currentClassName = ''; |
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| 60 | $currentClass = new ClassDefinition(); |
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| 61 | $needClassDescription = false; |
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| 62 | } elseif (($line[0] ?? '') === '/') { |
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| 63 | if (($line[1] ?? '') !== '/') { |
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| 64 | $this->printError('Wrong comment'); |
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| 65 | |||
| 66 | continue; |
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| 67 | } |
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| 68 | |||
| 69 | if (($line[2] ?? '') === '@' || ($line[2] ?? '') === '-') { |
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| 70 | $description .= trim(substr($line, 2 + intval('-' === $line[2]))) . ' '; |
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| 71 | } else { |
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| 72 | $this->printError('Unexpected comment'); |
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| 73 | } |
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| 74 | } elseif (strpos($line, '? =') || strpos($line, ' = Vector t;') || 'boolFalse = Bool;' === $line || |
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| 75 | 'boolTrue = Bool;' === $line || 'bytes = Bytes;' === $line || 'int32 = Int32;' === $line || |
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| 76 | 'int53 = Int53;' === $line || 'int64 = Int64;' === $line) { |
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| 77 | $this->printDebug('skip built-in types'); |
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| 78 | |||
| 79 | continue; |
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| 80 | } else { |
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| 81 | $description = trim($description); |
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| 82 | |||
| 83 | if ('' === $description) { |
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| 84 | // $this->printError('Empty description', ['description' => $description]); |
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| 85 | } |
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| 86 | |||
| 87 | if (($description[0] ?? '') !== '@') { |
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| 88 | // $this->printError('Wrong description begin', ['description' => $description]); |
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| 89 | } |
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| 90 | |||
| 91 | $docs = explode('@', $description); |
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| 92 | array_shift($docs); |
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| 93 | |||
| 94 | $info = []; |
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| 95 | foreach ($docs as $doc) { |
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| 96 | [$key, $value] = explode(' ', $doc, 2); |
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| 97 | $value = trim($value); |
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| 98 | |||
| 99 | if ($needClassDescription) { |
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| 100 | if ('description' === $key) { |
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| 101 | $needClassDescription = false; |
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| 102 | |||
| 103 | $currentClass->classDocs = $value; |
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| 104 | $currentClass->parentClass = 'Object'; |
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| 105 | $currentClass->typeName = $currentClass->className; |
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| 106 | |||
| 107 | $this->classes[$value] = $currentClass; |
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| 108 | $currentClass = new ClassDefinition(); |
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| 109 | continue; |
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| 110 | } else { |
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| 111 | $this->printError('Expected abstract class description', ['description' => $description]); |
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| 112 | } |
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| 113 | } |
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| 114 | |||
| 115 | if ('class' === $key) { |
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| 116 | $currentClassName = $this->getClassName($value); |
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| 117 | $currentClass->className = $currentClassName; |
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| 118 | |||
| 119 | $needClassDescription = true; |
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| 120 | |||
| 121 | if ($isFunction) { |
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| 122 | $this->printError('Unexpected class definition'); |
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| 123 | } |
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| 124 | } else { |
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| 125 | if (isset($info[$key])) { |
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| 126 | // $this->printError("Duplicate info about `$key`"); |
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| 127 | } |
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| 128 | $info[$key] = trim($value); |
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| 129 | } |
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| 130 | } |
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| 131 | |||
| 132 | if (1 !== substr_count($line, '=')) { |
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| 133 | // $this->printError("Wrong '=' count"); |
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| 134 | continue; |
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| 135 | } |
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| 136 | |||
| 137 | [$fields, $type] = explode('=', $line); |
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| 138 | $type = $this->getClassName($type); |
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| 139 | $fields = explode(' ', trim($fields)); |
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| 140 | $typeName = array_shift($fields); |
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| 141 | $className = $this->getClassName($typeName); |
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| 142 | |||
| 143 | if ($type !== $currentClassName) { |
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| 144 | $currentClassName = ''; |
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| 145 | $currentClass = new ClassDefinition(); |
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| 146 | $needClassDescription = false; |
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| 147 | } |
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| 148 | |||
| 149 | if (!$isFunction) { |
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| 150 | $typeLower = strtolower($type); |
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| 151 | $classNameLower = strtolower($className); |
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| 152 | |||
| 153 | if (empty($currentClassName) === ($typeLower !== $classNameLower)) { |
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| 154 | $this->printError('Wrong constructor name'); |
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| 155 | } |
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| 156 | |||
| 157 | if (0 !== strpos($classNameLower, $typeLower)) { |
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| 158 | // $this->printError('Wrong constructor name'); |
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| 159 | } |
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| 160 | } |
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| 161 | |||
| 162 | $knownFields = []; |
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| 163 | foreach ($fields as $field) { |
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| 164 | [$fieldName, $fieldType] = explode(':', $field); |
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| 165 | |||
| 166 | if (isset($info['param_' . $fieldName])) { |
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| 167 | $knownFields['param_' . $fieldName] = $fieldType; |
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| 168 | |||
| 169 | continue; |
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| 170 | } |
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| 171 | |||
| 172 | if (isset($info[$fieldName])) { |
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| 173 | $knownFields[$fieldName] = $fieldType; |
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| 174 | |||
| 175 | continue; |
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| 176 | } |
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| 177 | |||
| 178 | $this->printError("Have no info about field `$fieldName`"); |
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| 179 | } |
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| 180 | |||
| 181 | foreach ($info as $name => $value) { |
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| 182 | if (!$value) { |
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| 183 | $this->printError("info[$name] for $className is empty"); |
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| 184 | } elseif (($value[0] < 'A' || $value[0] > 'Z') && ($value[0] < '0' || $value[0] > '9')) { |
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| 185 | $this->printError("info[$name] for $className doesn't begins with capital letter"); |
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| 186 | } |
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| 187 | } |
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| 188 | |||
| 189 | foreach (array_diff_key($info, $knownFields) as $fieldName => $fieldInfo) { |
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| 190 | if ('description' !== $fieldName) { |
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| 191 | $this->printError("Have info about unexisted field `$fieldName`"); |
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| 192 | } |
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| 193 | } |
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| 194 | |||
| 195 | if (!isset($info['description'])) { |
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| 196 | $this->printError("Have no description for class `$className`"); |
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| 197 | } |
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| 198 | |||
| 199 | $baseClassName = $currentClassName ?: $this->getBaseClassName($isFunction); |
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| 200 | $classDescription = $info['description']; |
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| 201 | |||
| 202 | if ($isFunction) { |
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| 203 | $currentClass->returnType = $this->getTypeName($type); |
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| 204 | } |
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| 205 | |||
| 206 | $currentClass->className = $className; |
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| 207 | $currentClass->parentClass = $baseClassName; |
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| 208 | $currentClass->classDocs = $classDescription; |
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| 209 | $currentClass->typeName = $typeName; |
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| 210 | |||
| 211 | foreach ($knownFields as $name => $fieldType) { |
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| 212 | $mayBeNull = false !== stripos($info[$name], 'may be null'); |
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| 213 | $fieldName = $this->getFieldName($name, $className); |
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| 214 | $fieldTypeName = $this->getTypeName($fieldType); |
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| 215 | |||
| 216 | $rawName = $name; |
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| 217 | if ('param_' === substr($rawName, 0, 6)) { |
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| 218 | $rawName = substr($rawName, 6); |
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| 219 | } |
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| 220 | |||
| 221 | $field = $currentClass->getField($name); |
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| 222 | $field->rawName = $rawName; |
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| 223 | $field->name = $fieldName; |
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| 224 | $field->type = $fieldTypeName; |
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| 225 | $field->doc = $info[$name]; |
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| 226 | $field->mayBeNull = $mayBeNull; |
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| 227 | } |
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| 228 | |||
| 229 | $this->classes[$typeName] = $currentClass; |
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| 230 | $currentClass = new ClassDefinition(); |
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| 231 | $description = ''; |
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| 232 | } |
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| 233 | } |
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| 234 | |||
| 235 | return $this->classes; |
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| 236 | } |
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| 237 | |||
| 238 | private function printError(string $msg, array $args = []): void |
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| 245 | ) |
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| 246 | ); |
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| 247 | } |
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| 248 | |||
| 249 | private function printDebug(string $msg, array $args = []): void |
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| 250 | { |
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| 251 | $this->logger->debug( |
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| 252 | $msg, |
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| 253 | array_merge( |
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| 254 | ['line' => $this->currentLine, 'line_nr' => $this->currentLineNr], |
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| 255 | $args |
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| 256 | ) |
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| 257 | ); |
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| 258 | } |
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| 259 | |||
| 260 | protected function getClassName($name): string |
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| 261 | { |
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| 262 | return implode(array_map('ucfirst', explode('.', trim($name, "\r\n ;")))); |
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| 263 | } |
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| 264 | |||
| 265 | protected function getBaseClassName($isFunction): string |
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| 268 | } |
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| 269 | |||
| 270 | protected function getTypeName($type): string |
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| 316 | } |
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| 317 | } |
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| 318 | |||
| 319 | protected function getFieldName($name, $className): string |
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| 332 |