Completed
Push — master ( 288593...dfeb67 )
by Greg
01:45
created

BespokeDocBlockParser::processParamTag()   A

Complexity

Conditions 3
Paths 3

Size

Total Lines 9

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 9
rs 9.9666
c 0
b 0
f 0
cc 3
nc 3
nop 1
1
<?php
2
namespace Consolidation\AnnotatedCommand\Parser\Internal;
3
4
use Consolidation\AnnotatedCommand\Parser\CommandInfo;
5
use Consolidation\AnnotatedCommand\Parser\DefaultsWithDescriptions;
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7
/**
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 * Given a class and method name, parse the annotations in the
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 * DocBlock comment, and provide accessor methods for all of
10
 * the elements that are needed to create an annotated Command.
11
 */
12
class BespokeDocBlockParser
13
{
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    protected $fqcnCache;
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    /**
17
     * @var array
18
     */
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    protected $tagProcessors = [
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        'command' => 'processCommandTag',
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        'name' => 'processCommandTag',
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        'arg' => 'processArgumentTag',
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        'param' => 'processParamTag',
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        'return' => 'processReturnTag',
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        'option' => 'processOptionTag',
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        'default' => 'processDefaultTag',
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        'aliases' => 'processAliases',
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        'usage' => 'processUsageTag',
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        'description' => 'processAlternateDescriptionTag',
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        'desc' => 'processAlternateDescriptionTag',
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    ];
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    public function __construct(CommandInfo $commandInfo, \ReflectionMethod $reflection, $fqcnCache = null)
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    {
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        $this->commandInfo = $commandInfo;
0 ignored issues
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Bug introduced by
The property commandInfo does not exist. Did you maybe forget to declare it?

In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:

class MyClass { }

$x = new MyClass();
$x->foo = true;

Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion:

class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;
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36
        $this->reflection = $reflection;
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Bug introduced by
The property reflection does not exist. Did you maybe forget to declare it?

In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:

class MyClass { }

$x = new MyClass();
$x->foo = true;

Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion:

class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;
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37
        $this->fqcnCache = $fqcnCache ?: new FullyQualifiedClassCache();
38
    }
39
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    /**
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     * Parse the docBlock comment for this command, and set the
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     * fields of this class with the data thereby obtained.
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     */
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    public function parse()
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    {
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        $doc = $this->reflection->getDocComment();
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        $this->parseDocBlock($doc);
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    }
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    /**
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     * Save any tag that we do not explicitly recognize in the
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     * 'otherAnnotations' map.
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     */
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    protected function processGenericTag($tag)
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    {
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        $this->commandInfo->addAnnotation($tag->getTag(), $tag->getContent());
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    }
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    /**
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     * Set the name of the command from a @command or @name annotation.
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     */
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    protected function processCommandTag($tag)
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    {
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        if (!$tag->hasWordAndDescription($matches)) {
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Bug introduced by
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This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.

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65
            throw new \Exception('Could not determine command name from tag ' . (string)$tag);
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        }
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        $commandName = $matches['word'];
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        $this->commandInfo->setName($commandName);
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        // We also store the name in the 'other annotations' so that is is
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        // possible to determine if the method had a @command annotation.
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        $this->commandInfo->addAnnotation($tag->getTag(), $commandName);
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    }
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    /**
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     * The @description and @desc annotations may be used in
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     * place of the synopsis (which we call 'description').
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     * This is discouraged.
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     *
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     * @deprecated
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     */
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    protected function processAlternateDescriptionTag($tag)
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    {
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        $this->commandInfo->setDescription($tag->getContent());
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    }
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    /**
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     * Store the data from a @param annotation in our argument descriptions.
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     */
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    protected function processParamTag($tag)
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    {
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        if ($tag->hasTypeVariableAndDescription($matches)) {
92
            if ($this->ignoredParamType($matches['type'])) {
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The variable $matches does not exist. Did you forget to declare it?

This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.

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93
                return;
94
            }
95
        }
96
        return $this->processArgumentTag($tag);
97
    }
98
99
    protected function ignoredParamType($paramType)
100
    {
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        // TODO: We should really only allow a couple of types here,
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        // e.g. 'string', 'array', 'bool'. Blacklist things we do not
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        // want for now to avoid breaking commands with weird types.
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        // Fix in the next major version.
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        //
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        // This works:
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        //   return !in_array($paramType, ['string', 'array', 'integer', 'bool']);
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        return preg_match('#(InputInterface|OutputInterface)$#', $paramType);
109
    }
110
111
    /**
112
     * Store the data from a @arg annotation in our argument descriptions.
113
     */
114 View Code Duplication
    protected function processArgumentTag($tag)
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Duplication introduced by
This method seems to be duplicated in your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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115
    {
116
        if (!$tag->hasVariable($matches)) {
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Bug introduced by
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This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.

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117
            throw new \Exception('Could not determine argument name from tag ' . (string)$tag);
118
        }
119
        if ($matches['variable'] == $this->optionParamName()) {
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            return;
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        }
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        $this->addOptionOrArgumentTag($tag, $this->commandInfo->arguments(), $matches['variable'], $matches['description']);
123
    }
124
125
    /**
126
     * Store the data from an @option annotation in our option descriptions.
127
     */
128 View Code Duplication
    protected function processOptionTag($tag)
0 ignored issues
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Duplication introduced by
This method seems to be duplicated in your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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129
    {
130
        if (!$tag->hasVariable($matches)) {
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Bug introduced by
The variable $matches does not exist. Did you forget to declare it?

This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.

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131
            throw new \Exception('Could not determine option name from tag ' . (string)$tag);
132
        }
133
        $this->addOptionOrArgumentTag($tag, $this->commandInfo->options(), $matches['variable'], $matches['description']);
134
    }
135
136
    protected function addOptionOrArgumentTag($tag, DefaultsWithDescriptions $set, $name, $description)
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The parameter $tag is not used and could be removed.

This check looks from parameters that have been defined for a function or method, but which are not used in the method body.

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137
    {
138
        $variableName = $this->commandInfo->findMatchingOption($name);
139
        $description = static::removeLineBreaks($description);
140
        $set->add($variableName, $description);
141
    }
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    /**
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     * Store the data from a @default annotation in our argument or option store,
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     * as appropriate.
146
     */
147
    protected function processDefaultTag($tag)
148
    {
149
        if (!$tag->hasVariable($matches)) {
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Bug introduced by
The variable $matches does not exist. Did you forget to declare it?

This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.

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150
            throw new \Exception('Could not determine parameter name for default value from tag ' . (string)$tag);
151
        }
152
        $variableName = $matches['variable'];
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        $defaultValue = $this->interpretDefaultValue($matches['description']);
154
        if ($this->commandInfo->arguments()->exists($variableName)) {
155
            $this->commandInfo->arguments()->setDefaultValue($variableName, $defaultValue);
156
            return;
157
        }
158
        $variableName = $this->commandInfo->findMatchingOption($variableName);
159
        if ($this->commandInfo->options()->exists($variableName)) {
160
            $this->commandInfo->options()->setDefaultValue($variableName, $defaultValue);
161
        }
162
    }
163
164
    /**
165
     * Store the data from a @usage annotation in our example usage list.
166
     */
167
    protected function processUsageTag($tag)
168
    {
169
        $lines = explode("\n", $tag->getContent());
170
        $usage = trim(array_shift($lines));
171
        $description = static::removeLineBreaks(implode("\n", array_map(function ($line) {
172
            return trim($line);
173
        }, $lines)));
174
175
        $this->commandInfo->setExampleUsage($usage, $description);
176
    }
177
178
    /**
179
     * Process the comma-separated list of aliases
180
     */
181
    protected function processAliases($tag)
182
    {
183
        $this->commandInfo->setAliases((string)$tag->getContent());
184
    }
185
186
    /**
187
     * Store the data from a @return annotation in our argument descriptions.
188
     */
189
    protected function processReturnTag($tag)
190
    {
191
        // The return type might be a variable -- '$this'. It will
192
        // usually be a type, like RowsOfFields, or \Namespace\RowsOfFields.
193
        if (!$tag->hasVariableAndDescription($matches)) {
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Bug introduced by
The variable $matches does not exist. Did you forget to declare it?

This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.

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194
            throw new \Exception('Could not determine return type from tag ' . (string)$tag);
195
        }
196
        // Look at namespace and `use` statments to make returnType a fqdn
197
        $returnType = $matches['variable'];
198
        $returnType = $this->findFullyQualifiedClass($returnType);
199
        $this->commandInfo->setReturnType($returnType);
200
    }
201
202
    protected function findFullyQualifiedClass($className)
203
    {
204
        if (strpos($className, '\\') !== false) {
205
            return $className;
206
        }
207
208
        return $this->fqcnCache->qualify($this->reflection->getFileName(), $className);
209
    }
210
211
    private function parseDocBlock($doc)
212
    {
213
        // Remove the leading /** and the trailing */
214
        $doc = preg_replace('#^\s*/\*+\s*#', '', $doc);
215
        $doc = preg_replace('#\s*\*+/\s*#', '', $doc);
216
217
        // Nothing left? Exit.
218
        if (empty($doc)) {
219
            return;
220
        }
221
222
        $tagFactory = new TagFactory();
223
        $lines = [];
224
225
        foreach (explode("\n", $doc) as $row) {
226
            // Remove trailing whitespace and leading space + '*'s
227
            $row = rtrim($row);
228
            $row = preg_replace('#^[ \t]*\**#', '', $row);
229
230
            if (!$tagFactory->parseLine($row)) {
231
                $lines[] = $row;
232
            }
233
        }
234
235
        $this->processDescriptionAndHelp($lines);
236
        $this->processAllTags($tagFactory->getTags());
237
    }
238
239
    protected function processDescriptionAndHelp($lines)
240
    {
241
        // Trim all of the lines individually.
242
        $lines =
243
            array_map(
244
                function ($line) {
245
                    return trim($line);
246
                },
247
                $lines
248
            );
249
250
        // Everything up to the first blank line goes in the description.
251
        $description = array_shift($lines);
252
        while ($this->nextLineIsNotEmpty($lines)) {
253
            $description .= ' ' . array_shift($lines);
254
        }
255
256
        // Everything else goes in the help.
257
        $help = trim(implode("\n", $lines));
258
259
        $this->commandInfo->setDescription($description);
260
        $this->commandInfo->setHelp($help);
261
    }
262
263
    protected function nextLineIsNotEmpty($lines)
264
    {
265
        if (empty($lines)) {
266
            return false;
267
        }
268
269
        $nextLine = trim($lines[0]);
270
        return !empty($nextLine);
271
    }
272
273
    protected function processAllTags($tags)
274
    {
275
        // Iterate over all of the tags, and process them as necessary.
276
        foreach ($tags as $tag) {
277
            $processFn = [$this, 'processGenericTag'];
278
            if (array_key_exists($tag->getTag(), $this->tagProcessors)) {
279
                $processFn = [$this, $this->tagProcessors[$tag->getTag()]];
280
            }
281
            $processFn($tag);
282
        }
283
    }
284
285
    protected function lastParameterName()
286
    {
287
        $params = $this->commandInfo->getParameters();
288
        $param = end($params);
289
        if (!$param) {
290
            return '';
291
        }
292
        return $param->name;
293
    }
294
295
    /**
296
     * Return the name of the last parameter if it holds the options.
297
     */
298
    public function optionParamName()
299
    {
300
        // Remember the name of the last parameter, if it holds the options.
301
        // We will use this information to ignore @param annotations for the options.
302
        if (!isset($this->optionParamName)) {
303
            $this->optionParamName = '';
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Bug introduced by
The property optionParamName does not exist. Did you maybe forget to declare it?

In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:

class MyClass { }

$x = new MyClass();
$x->foo = true;

Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion:

class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;
Loading history...
304
            $options = $this->commandInfo->options();
305
            if (!$options->isEmpty()) {
306
                $this->optionParamName = $this->lastParameterName();
307
            }
308
        }
309
310
        return $this->optionParamName;
311
    }
312
313
    protected function interpretDefaultValue($defaultValue)
314
    {
315
        $defaults = [
316
            'null' => null,
317
            'true' => true,
318
            'false' => false,
319
            "''" => '',
320
            '[]' => [],
321
        ];
322
        foreach ($defaults as $defaultName => $defaultTypedValue) {
323
            if ($defaultValue == $defaultName) {
324
                return $defaultTypedValue;
325
            }
326
        }
327
        return $defaultValue;
328
    }
329
330
    /**
331
     * Given a list that might be 'a b c' or 'a, b, c' or 'a,b,c',
332
     * convert the data into the last of these forms.
333
     */
334
    protected static function convertListToCommaSeparated($text)
335
    {
336
        return preg_replace('#[ \t\n\r,]+#', ',', $text);
337
    }
338
339
    /**
340
     * Take a multiline description and convert it into a single
341
     * long unbroken line.
342
     */
343
    protected static function removeLineBreaks($text)
344
    {
345
        return trim(preg_replace('#[ \t\n\r]+#', ' ', $text));
346
    }
347
}
348