CodeDumper::dumpClass() - Code Metrics - Inspection of "Feature: unify event and command serialisation" - EventSaucePHP/EventSauce - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#54)

by Frank

created 2019-07-20 10:16 UTC

CodeDumper::dumpClass() A

↳ Parent: CodeDumper

Complexity

Conditions	5
Paths	6

Size

Total Lines	29
Code Lines	17

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	17
CRAP Score	5

Importance

Changes

Metric	Value
cc	5
eloc	17
nc	6
nop	3
dl	0
loc	29
ccs	17
cts	17
cp	1
crap	5
rs	9.3888
c	0
b	0
f	0

<?php

declare(strict_types=1);

namespace EventSauce\EventSourcing\CodeGeneration;

use LogicException;
use const null;
use function array_filter;
use function sprintf;
use function ucfirst;
use function var_export;

class CodeDumper
{
    /**
     * @var DefinitionGroup
     */
    private $definitionGroup;

    public function dump(DefinitionGroup $definitionGroup, bool $withHelpers = true, bool $withSerialization = true): string
    {
        $this->definitionGroup = $definitionGroup;
        $definitionCode = $this->dumpClass($definitionGroup->events(), $withHelpers, $withSerialization);
        $commandCode = $this->dumpClass($definitionGroup->commands(), $withHelpers, $withSerialization);
        $namespace = $definitionGroup->namespace();
        $allCode = implode("\n\n", array_filter([$definitionCode, $commandCode]));

        if ($withSerialization) {
            $namespace .= ";

use EventSauce\EventSourcing\Serialization\SerializablePayload";
        }

        return <<<EOF
<?php

namespace $namespace;

$allCode

EOF;
    }

    private function dumpClass(array $definitions, bool $withHelpers, bool $withSerialization): string
    {
        $code = [];

        if (empty($definitions)) {
            return '';
        }

        foreach ($definitions as $definition) {
            $name = $definition->name();
            $fields = $this->dumpFields($definition);
            $constructor = $this->dumpConstructor($definition);
            $methods = $this->dumpMethods($definition);
            $deserializer = $this->dumpSerializationMethods($definition);
            $testHelpers = $withHelpers ? $this->dumpTestHelpers($definition) : '';
            $implements = $withSerialization ? ' implements SerializablePayload' : '';

            $code[] = <<<EOF
final class $name$implements
{
$fields$constructor$methods$deserializer

$testHelpers}


EOF;
        }

        return rtrim(implode('', $code));
    }

    private function dumpFields(PayloadDefinition $definition): string
    {
        $fields = $this->fieldsFromDefinition($definition);
        $code = [];
        $code[] = <<<EOF

EOF;

        foreach ($fields as $field) {
            $name = $field['name'];
            $type = $this->definitionGroup->resolveTypeAlias($field['type']);

            $code[] = <<<EOF
    /**
     * @var $type
     */
    private \$$name;


EOF;
        }

        return implode('', $code);
    }

    private function dumpConstructor(PayloadDefinition $definition): string
    {
        $arguments = [];
        $assignments = [];
        $fields = $this->fieldsFromDefinition($definition);

        if (empty($fields)) {
            return '';
        }

        foreach ($fields as $field) {
            $resolvedType = $this->definitionGroup->resolveTypeAlias($field['type']);
            $arguments[] = sprintf('        %s $%s', $resolvedType, $field['name']);
            $assignments[] = sprintf('        $this->%s = $%s;', $field['name'], $field['name']);
        }

        $arguments = implode(",\n", $arguments);
        $assignments = implode("\n", $assignments);

        return <<<EOF
    public function __construct(
$arguments
    ) {
$assignments
    }


EOF;
    }

    private function dumpMethods(PayloadDefinition $command): string
    {
        $methods = [];

        foreach ($this->fieldsFromDefinition($command) as $field) {
            $methods[] = <<<EOF
    public function {$field['name']}(): {$this->definitionGroup->resolveTypeAlias($field['type'])}
    {
        return \$this->{$field['name']};
    }


EOF;
        }

        return empty($methods) ? '' : rtrim(implode('', $methods)) . "\n";
    }

    private function dumpSerializationMethods(PayloadDefinition $definition)
    {
        $name = $definition->name();
        $arguments = [];
        $serializers = [];

        foreach ($this->fieldsFromDefinition($definition) as $field) {
            $type = $this->definitionGroup->resolveTypeAlias($field['type']);
            $parameter = sprintf('$payload[\'%s\']', $field['name']);
            $template = $definition->deserializerForField($field['name'])
                ?: $definition->deserializerForType($field['type']);
            $arguments[] = trim(strtr($template, ['{type}' => $type, '{param}' => $parameter]));

            $property = sprintf('$this->%s', $field['name']);
            $template = $definition->serializerForField($field['name'])
                ?: $definition->serializerForType($field['type']);
            $template = sprintf("'%s' => %s", $field['name'], $template);
            $serializers[] = trim(strtr($template, ['{type}' => $type, '{param}' => $property]));
        }

        $arguments = preg_replace('/^.{2,}$/m', '            $0', implode(",\n", $arguments));

        if ( ! empty($arguments)) {
            $arguments = "\n$arguments\n        ";
        }

        $serializers = preg_replace('/^.{2,}$/m', '            $0', implode(",\n", $serializers));

        if ( ! empty($serializers)) {
            $serializers = "\n$serializers,\n        ";
        }

        return <<<EOF
    public static function fromPayload(array \$payload): SerializablePayload
    {
        return new $name($arguments);
    }

    public function toPayload(): array
    {
        return [$serializers];
    }
EOF;
    }

    private function dumpTestHelpers(PayloadDefinition $definition): string
    {
        $constructor = [];
        $constructorArguments = '';
        $constructorValues = [];
        $helpers = [];

        foreach ($this->fieldsFromDefinition($definition) as $field) {
            $resolvedType = $this->definitionGroup->resolveTypeAlias($field['type']);

            if (null === $field['example']) {
                $constructor[] = ucfirst($field['name']);

                if ('' !== $constructorArguments) {
                    $constructorArguments .= ', ';
                }

                $constructorArguments .= sprintf('%s $%s', $resolvedType, $field['name']);
                $constructorValues[] = sprintf('$%s', $field['name']);
            } else {
                $constructorValues[] = $this->dumpConstructorValue($field, $definition);
                $method = sprintf('with%s', ucfirst($field['name']));
                $helpers[] = <<<EOF
    /**
     * @codeCoverageIgnore
     */
    public function $method({$resolvedType} \${$field['name']}): {$definition->name()}
    {
        \$clone = clone \$this;
        \$clone->{$field['name']} = \${$field['name']};

        return \$clone;
    }


EOF;
            }
        }

        $constructor = sprintf('with%s', implode('And', $constructor));
        $constructorValues = implode(",\n            ", $constructorValues);

        if ('' !== $constructorValues) {
            $constructorValues = "\n            $constructorValues\n        ";
        }

        $helpers[] = <<<EOF
    /**
     * @codeCoverageIgnore
     */
    public static function $constructor($constructorArguments): {$definition->name()}
    {
        return new {$definition->name()}($constructorValues);
    }


EOF;

        return rtrim(implode('', $helpers)) . "\n";
    }

    private function dumpConstructorValue(array $field, PayloadDefinition $definition): string
    {
        $parameter = rtrim($field['example']);
        $resolvedType = $this->definitionGroup->resolveTypeAlias($field['type']);

        if (gettype($parameter) === $resolvedType) {
            $parameter = var_export($parameter, true);
        }

        $template = $definition->deserializerForField($field['name'])
            ?: $definition->deserializerForType($field['type']);

        return rtrim(strtr($template, ['{type}' => $resolvedType, '{param}' => $parameter]));
    }

    /**
     * @param PayloadDefinition $definition
     *
     * @return array
     */
    private function fieldsFromDefinition(PayloadDefinition $definition): array
    {
        $fields = $this->fieldsFrom($definition->fieldsFrom());

        foreach ($definition->fields() as $field) {
            array_push($fields, $field);
        }

        return $fields;
    }

    private function fieldsFrom(string $fieldsFrom): array
    {
        if (empty($fieldsFrom)) {
            return [];
        }

        foreach ($this->definitionGroup->events() as $definition) {
            if ($definition->name() === $fieldsFrom) {
                return $definition->fields();
            }
        }

        foreach ($this->definitionGroup->commands() as $command) {
            if ($command->name() === $fieldsFrom) {
                return $command->fields();
            }
        }

        throw new LogicException("Could not inherit fields from {$fieldsFrom}.");
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace EventSauce\EventSourcing\CodeGeneration;
6
7		use LogicException;
8		use const null;
9		use function array_filter;
10		use function sprintf;
11		use function ucfirst;
12		use function var_export;
13
14		class CodeDumper
15		{
16		/**
17		* @var DefinitionGroup
18		*/
19		private $definitionGroup;
20
21	12	public function dump(DefinitionGroup $definitionGroup, bool $withHelpers = true, bool $withSerialization = true): string
22		{
23	12	$this->definitionGroup = $definitionGroup;
24	12	$definitionCode = $this->dumpClass($definitionGroup->events(), $withHelpers, $withSerialization);
25	12	$commandCode = $this->dumpClass($definitionGroup->commands(), $withHelpers, $withSerialization);
26	11	$namespace = $definitionGroup->namespace();
27	11	$allCode = implode("\n\n", array_filter([$definitionCode, $commandCode]));
28
29	11	if ($withSerialization) {
30	11	$namespace .= ";
31
32		use EventSauce\EventSourcing\Serialization\SerializablePayload";
33		}
34
35		return <<<EOF
36		<?php
37
38	11	namespace $namespace;
39
40	11	$allCode
41
42		EOF;
43		}
44
45	12	private function dumpClass(array $definitions, bool $withHelpers, bool $withSerialization): string
46		{
47	12	$code = [];
48
49	12	if (empty($definitions)) {
50	9	return '';
51		}
52
53	12	foreach ($definitions as $definition) {
54	12	$name = $definition->name();
55	12	$fields = $this->dumpFields($definition);
56	11	$constructor = $this->dumpConstructor($definition);
57	11	$methods = $this->dumpMethods($definition);
58	11	$deserializer = $this->dumpSerializationMethods($definition);
59	11	$testHelpers = $withHelpers ? $this->dumpTestHelpers($definition) : '';
60	11	$implements = $withSerialization ? ' implements SerializablePayload' : '';
61
62	11	$code[] = <<<EOF
63	11	final class $name$implements
64		{
65	11	$fields$constructor$methods$deserializer
66
67	11	$testHelpers}
68
69
70		EOF;
71		}
72
73	11	return rtrim(implode('', $code));
74		}
75
76	12	private function dumpFields(PayloadDefinition $definition): string
77		{
78	12	$fields = $this->fieldsFromDefinition($definition);
79	11	$code = [];
80	11	$code[] = <<<EOF
81
82		EOF;
83
84	11	foreach ($fields as $field) {
85	10	$name = $field['name'];
86	10	$type = $this->definitionGroup->resolveTypeAlias($field['type']);
87
88	10	$code[] = <<<EOF
89		/**
90	10	* @var $type
91		*/
92	10	private \$$name;
93
94
95		EOF;
96		}
97
98	11	return implode('', $code);
99		}
100
101	11	private function dumpConstructor(PayloadDefinition $definition): string
102		{
103	11	$arguments = [];
104	11	$assignments = [];
105	11	$fields = $this->fieldsFromDefinition($definition);
106
107	11	if (empty($fields)) {
108	1	return '';
109		}
110
111	10	foreach ($fields as $field) {
112	10	$resolvedType = $this->definitionGroup->resolveTypeAlias($field['type']);
113	10	$arguments[] = sprintf(' %s $%s', $resolvedType, $field['name']);
114	10	$assignments[] = sprintf(' $this->%s = $%s;', $field['name'], $field['name']);
115		}
116
117	10	$arguments = implode(",\n", $arguments);
118	10	$assignments = implode("\n", $assignments);
119
120		return <<<EOF
121		public function __construct(
122	10	$arguments
123		) {
124	10	$assignments
125		}
126
127
128		EOF;
129		}
130
131	11	private function dumpMethods(PayloadDefinition $command): string
132		{
133	11	$methods = [];
134
135	11	foreach ($this->fieldsFromDefinition($command) as $field) {
136	10	$methods[] = <<<EOF
137	10	public function {$field['name']}(): {$this->definitionGroup->resolveTypeAlias($field['type'])}
138		{
139	10	return \$this->{$field['name']};
140		}
141
142
143		EOF;
144		}
145
146	11	return empty($methods) ? '' : rtrim(implode('', $methods)) . "\n";
147		}
148
149	11	private function dumpSerializationMethods(PayloadDefinition $definition)
150		{
151	11	$name = $definition->name();
152	11	$arguments = [];
153	11	$serializers = [];
154
155	11	foreach ($this->fieldsFromDefinition($definition) as $field) {
156	10	$type = $this->definitionGroup->resolveTypeAlias($field['type']);
157	10	$parameter = sprintf('$payload[\'%s\']', $field['name']);
158	10	$template = $definition->deserializerForField($field['name'])
159	10	?: $definition->deserializerForType($field['type']);
160	10	$arguments[] = trim(strtr($template, ['{type}' => $type, '{param}' => $parameter]));
161
162	10	$property = sprintf('$this->%s', $field['name']);
163	10	$template = $definition->serializerForField($field['name'])
164	10	?: $definition->serializerForType($field['type']);
165	10	$template = sprintf("'%s' => %s", $field['name'], $template);
166	10	$serializers[] = trim(strtr($template, ['{type}' => $type, '{param}' => $property]));
167		}
168
169	11	$arguments = preg_replace('/^.{2,}$/m', ' $0', implode(",\n", $arguments));
170
171	11	if ( ! empty($arguments)) {
172	10	$arguments = "\n$arguments\n ";
173		}
174
175	11	$serializers = preg_replace('/^.{2,}$/m', ' $0', implode(",\n", $serializers));
176
177	11	if ( ! empty($serializers)) {
178	10	$serializers = "\n$serializers,\n ";
179		}
180
181		return <<<EOF
182		public static function fromPayload(array \$payload): SerializablePayload
183		{
184	11	return new $name($arguments);
185		}
186
187		public function toPayload(): array
188		{
189	11	return [$serializers];
190		}
191		EOF;
192		}
193
194	9	private function dumpTestHelpers(PayloadDefinition $definition): string
195		{
196	9	$constructor = [];
197	9	$constructorArguments = '';
198	9	$constructorValues = [];
199	9	$helpers = [];
200
201	9	foreach ($this->fieldsFromDefinition($definition) as $field) {
202	8	$resolvedType = $this->definitionGroup->resolveTypeAlias($field['type']);
203
204	8	if (null === $field['example']) {
205	3	$constructor[] = ucfirst($field['name']);
206
207	3	if ('' !== $constructorArguments) {
208	1	$constructorArguments .= ', ';
209		}
210
211	3	$constructorArguments .= sprintf('%s $%s', $resolvedType, $field['name']);
212	3	$constructorValues[] = sprintf('$%s', $field['name']);
213		} else {
214	6	$constructorValues[] = $this->dumpConstructorValue($field, $definition);
215	6	$method = sprintf('with%s', ucfirst($field['name']));
216	6	$helpers[] = <<<EOF
217		/**
218		* @codeCoverageIgnore
219		*/
220	6	public function $method({$resolvedType} \${$field['name']}): {$definition->name()}
221		{
222		\$clone = clone \$this;
223	6	\$clone->{$field['name']} = \${$field['name']};
224
225		return \$clone;
226		}
227
228
229		EOF;
230		}
231		}
232
233	9	$constructor = sprintf('with%s', implode('And', $constructor));
234	9	$constructorValues = implode(",\n ", $constructorValues);
235
236	9	if ('' !== $constructorValues) {
237	8	$constructorValues = "\n $constructorValues\n ";
238		}
239
240	9	$helpers[] = <<<EOF
241		/**
242		* @codeCoverageIgnore
243		*/
244	9	public static function $constructor($constructorArguments): {$definition->name()}
245		{
246	9	return new {$definition->name()}($constructorValues);
247		}
248
249
250		EOF;
251
252	9	return rtrim(implode('', $helpers)) . "\n";
253		}
254
255	6	private function dumpConstructorValue(array $field, PayloadDefinition $definition): string
256		{
257	6	$parameter = rtrim($field['example']);
258	6	$resolvedType = $this->definitionGroup->resolveTypeAlias($field['type']);
259
260	6	if (gettype($parameter) === $resolvedType) {
261	5	$parameter = var_export($parameter, true);
262		}
263
264	6	$template = $definition->deserializerForField($field['name'])
265	6	?: $definition->deserializerForType($field['type']);
266
267	6	return rtrim(strtr($template, ['{type}' => $resolvedType, '{param}' => $parameter]));
268		}
269
270		/**
271		* @param PayloadDefinition $definition
272		*
273		* @return array
274		*/
275	12	private function fieldsFromDefinition(PayloadDefinition $definition): array
276		{
277	12	$fields = $this->fieldsFrom($definition->fieldsFrom());
278
279	11	foreach ($definition->fields() as $field) {
280	10	array_push($fields, $field);
281		}
282
283	11	return $fields;
284		}
285
286	12	private function fieldsFrom(string $fieldsFrom): array
287		{
288	12	if (empty($fieldsFrom)) {
289	11	return [];
290		}
291
292	2	foreach ($this->definitionGroup->events() as $definition) {
293	1	if ($definition->name() === $fieldsFrom) {
294	1	return $definition->fields();
295		}
296		}
297
298	2	foreach ($this->definitionGroup->commands() as $command) {
299	2	if ($command->name() === $fieldsFrom) {
300	1	return $command->fields();
301		}
302		}
303
304	1	throw new LogicException("Could not inherit fields from {$fieldsFrom}.");
305		}
306		}
307

EventSaucePHP / EventSauce

Pull Request — master (#54)

CodeDumper::dumpClass() A

Complexity

Size

Duplication

Code Coverage

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