ValidationContext::getFragmentSpreads() - Code Metrics - Inspection of "Merge pull request #321 from simPod/validator-cs" - webonyx/graphql-php - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Push — master ( e31947...cc39b3 )

by Šimon

created 2018-08-13 07:16 UTC

ValidationContext::getFragmentSpreads() A

↳ Parent: ValidationContext

Complexity

Conditions	6
Paths	2

Size

Total Lines	22
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	15
CRAP Score	6

Importance

Changes

Metric	Value
eloc	14
dl	0
loc	22
ccs	15
cts	15
cp	1
rs	9.2222
c	0
b	0
f	0
cc	6
nc	2
nop	1
crap	6

<?php

declare(strict_types=1);

namespace GraphQL\Validator;

use GraphQL\Error\Error;
use GraphQL\Language\AST\DocumentNode;
use GraphQL\Language\AST\FragmentDefinitionNode;
use GraphQL\Language\AST\FragmentSpreadNode;
use GraphQL\Language\AST\HasSelectionSet;
use GraphQL\Language\AST\NodeKind;
use GraphQL\Language\AST\OperationDefinitionNode;
use GraphQL\Language\AST\VariableNode;
use GraphQL\Language\Visitor;
use GraphQL\Type\Definition\FieldDefinition;
use GraphQL\Type\Definition\InputType;
use GraphQL\Type\Definition\Type;
use GraphQL\Type\Schema;
use GraphQL\Utils\TypeInfo;
use SplObjectStorage;
use function array_pop;
use function call_user_func_array;
use function count;

/**
 * An instance of this class is passed as the "this" context to all validators,
 * allowing access to commonly useful contextual information from within a
 * validation rule.
 */
class ValidationContext
{
    /** @var Schema */
    private $schema;

    /** @var DocumentNode */
    private $ast;

    /** @var TypeInfo */
    private $typeInfo;

    /** @var Error[] */
    private $errors;

    /** @var FragmentDefinitionNode[] */
    private $fragments;

    /** @var SplObjectStorage */
    private $fragmentSpreads;

    /** @var SplObjectStorage */
    private $recursivelyReferencedFragments;

    /** @var SplObjectStorage */
    private $variableUsages;

    /** @var SplObjectStorage */
    private $recursiveVariableUsages;

    public function __construct(Schema $schema, DocumentNode $ast, TypeInfo $typeInfo)
    {
        $this->schema                         = $schema;
        $this->ast                            = $ast;
        $this->typeInfo                       = $typeInfo;
        $this->errors                         = [];
        $this->fragmentSpreads                = new SplObjectStorage();
        $this->recursivelyReferencedFragments = new SplObjectStorage();
        $this->variableUsages                 = new SplObjectStorage();
        $this->recursiveVariableUsages        = new SplObjectStorage();
    }

    public function reportError(Error $error)
    {
        $this->errors[] = $error;
    }

    /**
     * @return Error[]
     */
    public function getErrors()
    {
        return $this->errors;
    }

    /**
     * @return Schema
     */
    public function getSchema()
    {
        return $this->schema;
    }

    /**
     * @return mixed[][] List of ['node' => VariableNode, 'type' => ?InputObjectType]
     */
    public function getRecursiveVariableUsages(OperationDefinitionNode $operation)
    {
        $usages = $this->recursiveVariableUsages[$operation] ?? null;

        if (! $usages) {
            $usages    = $this->getVariableUsages($operation);
            $fragments = $this->getRecursivelyReferencedFragments($operation);

            $tmp = [$usages];
            for ($i = 0; $i < count($fragments); $i++) {
for ($i=0; $i<count($array); $i++) { // calls count() on each iteration
}

// Better
for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once
}
                $tmp[] = $this->getVariableUsages($fragments[$i]);
            }
            $usages                                    = call_user_func_array('array_merge', $tmp);
            $this->recursiveVariableUsages[$operation] = $usages;
        }

        return $usages;
    }

    /**
     * @return mixed[][] List of ['node' => VariableNode, 'type' => ?InputObjectType]
     */
    private function getVariableUsages(HasSelectionSet $node)
    {
        $usages = $this->variableUsages[$node] ?? null;

        if (! $usages) {
            $newUsages = [];
            $typeInfo  = new TypeInfo($this->schema);
            Visitor::visit(
                $node,
                Visitor::visitWithTypeInfo(
                    $typeInfo,
                    [
                        NodeKind::VARIABLE_DEFINITION => function () {
                            return false;
                        },
                        NodeKind::VARIABLE            => function (VariableNode $variable) use (
                            &$newUsages,
                            $typeInfo
                        ) {
                            $newUsages[] = ['node' => $variable, 'type' => $typeInfo->getInputType()];
                        },
                    ]
                )
            );
            $usages                      = $newUsages;
            $this->variableUsages[$node] = $usages;
        }

        return $usages;
    }

    /**
     * @return FragmentDefinitionNode[]
     */
    public function getRecursivelyReferencedFragments(OperationDefinitionNode $operation)
    {
        $fragments = $this->recursivelyReferencedFragments[$operation] ?? null;

        if (! $fragments) {
            $fragments      = [];
            $collectedNames = [];
            $nodesToVisit   = [$operation];
            while (! empty($nodesToVisit)) {
                $node    = array_pop($nodesToVisit);
                $spreads = $this->getFragmentSpreads($node);
                for ($i = 0; $i < count($spreads); $i++) {
for ($i=0; $i<count($array); $i++) { // calls count() on each iteration
}

// Better
for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once
}
                    $fragName = $spreads[$i]->name->value;

                    if (! empty($collectedNames[$fragName])) {
                        continue;
                    }

                    $collectedNames[$fragName] = true;
                    $fragment                  = $this->getFragment($fragName);
                    if (! $fragment) {
                        continue;
                    }

                    $fragments[]    = $fragment;
                    $nodesToVisit[] = $fragment;
                }
            }
            $this->recursivelyReferencedFragments[$operation] = $fragments;
        }

        return $fragments;
    }

    /**
     * @return FragmentSpreadNode[]
     */
    public function getFragmentSpreads(HasSelectionSet $node)
    {
        $spreads = $this->fragmentSpreads[$node] ?? null;
        if (! $spreads) {
            $spreads     = [];
            $setsToVisit = [$node->selectionSet];

            while (! empty($setsToVisit)) {
                $set = array_pop($setsToVisit);

                for ($i = 0; $i < count($set->selections); $i++) {
for ($i=0; $i<count($array); $i++) { // calls count() on each iteration
}

// Better
for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once
}
                    $selection = $set->selections[$i];
                    if ($selection->kind === NodeKind::FRAGMENT_SPREAD) {
                        $spreads[] = $selection;
                    } elseif ($selection->selectionSet) {
                        $setsToVisit[] = $selection->selectionSet;
                    }
                }
            }
            $this->fragmentSpreads[$node] = $spreads;
        }

        return $spreads;
    }

    /**
     * @param string $name
     * @return FragmentDefinitionNode|null
     */
    public function getFragment($name)
    {
        $fragments = $this->fragments;
        if (! $fragments) {

            $fragments = [];
            foreach ($this->getDocument()->definitions as $statement) {
                if ($statement->kind !== NodeKind::FRAGMENT_DEFINITION) {

                    continue;
                }

                $fragments[$statement->name->value] = $statement;

            }
            $this->fragments = $fragments;
        }

        return $fragments[$name] ?? null;
    }

    /**
     * @return DocumentNode
     */
    public function getDocument()
    {
        return $this->ast;
    }

    /**
     * Returns OutputType
     *
     * @return Type
     */
    public function getType()
    {
        return $this->typeInfo->getType();
    }

    /**
     * @return Type
     */
    public function getParentType()
    {
        return $this->typeInfo->getParentType();
    }

    /**
     * @return InputType
     */
    public function getInputType()
    {
        return $this->typeInfo->getInputType();
    }

    /**
     * @return InputType
     */
    public function getParentInputType()
    {
        return $this->typeInfo->getParentInputType();
    }

    /**
     * @return FieldDefinition
     */
    public function getFieldDef()
    {
        return $this->typeInfo->getFieldDef();
    }

    public function getDirective()
    {
        return $this->typeInfo->getDirective();
    }

    public function getArgument()
    {
        return $this->typeInfo->getArgument();
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace GraphQL\Validator;
6
7		use GraphQL\Error\Error;
8		use GraphQL\Language\AST\DocumentNode;
9		use GraphQL\Language\AST\FragmentDefinitionNode;
10		use GraphQL\Language\AST\FragmentSpreadNode;
11		use GraphQL\Language\AST\HasSelectionSet;
12		use GraphQL\Language\AST\NodeKind;
13		use GraphQL\Language\AST\OperationDefinitionNode;
14		use GraphQL\Language\AST\VariableNode;
15		use GraphQL\Language\Visitor;
16		use GraphQL\Type\Definition\FieldDefinition;
17		use GraphQL\Type\Definition\InputType;
18		use GraphQL\Type\Definition\Type;
19		use GraphQL\Type\Schema;
20		use GraphQL\Utils\TypeInfo;
21		use SplObjectStorage;
22		use function array_pop;
23		use function call_user_func_array;
24		use function count;
25
26		/**
27		* An instance of this class is passed as the "this" context to all validators,
28		* allowing access to commonly useful contextual information from within a
29		* validation rule.
30		*/
31		class ValidationContext
32		{
33		/** @var Schema */
34		private $schema;
35
36		/** @var DocumentNode */
37		private $ast;
38
39		/** @var TypeInfo */
40		private $typeInfo;
41
42		/** @var Error[] */
43		private $errors;
44
45		/** @var FragmentDefinitionNode[] */
46		private $fragments;
47
48		/** @var SplObjectStorage */
49		private $fragmentSpreads;
50
51		/** @var SplObjectStorage */
52		private $recursivelyReferencedFragments;
53
54		/** @var SplObjectStorage */
55		private $variableUsages;
56
57		/** @var SplObjectStorage */
58		private $recursiveVariableUsages;
59
60	514	public function __construct(Schema $schema, DocumentNode $ast, TypeInfo $typeInfo)
61		{
62	514	$this->schema = $schema;
63	514	$this->ast = $ast;
64	514	$this->typeInfo = $typeInfo;
65	514	$this->errors = [];
66	514	$this->fragmentSpreads = new SplObjectStorage();
67	514	$this->recursivelyReferencedFragments = new SplObjectStorage();
68	514	$this->variableUsages = new SplObjectStorage();
69	514	$this->recursiveVariableUsages = new SplObjectStorage();
70	514	}
71
72	213	public function reportError(Error $error)
73		{
74	213	$this->errors[] = $error;
75	213	}
76
77		/**
78		* @return Error[]
79		*/
80	514	public function getErrors()
81		{
82	514	return $this->errors;
83		}
84
85		/**
86		* @return Schema
87		*/
88	148	public function getSchema()
89		{
90	148	return $this->schema;
91		}
92
93		/**
94		* @return mixed[][] List of ['node' => VariableNode, 'type' => ?InputObjectType]
95		*/
96	151	public function getRecursiveVariableUsages(OperationDefinitionNode $operation)
97		{
98	151	$usages = $this->recursiveVariableUsages[$operation] ?? null;
99
100	151	if (! $usages) {
101	151	$usages = $this->getVariableUsages($operation);
102	151	$fragments = $this->getRecursivelyReferencedFragments($operation);
103
104	151	$tmp = [$usages];
105	151	for ($i = 0; $i < count($fragments); $i++) {
		0 ignored issues – show Performance Best Practice introduced 2018-06-19 12:00 UTC by Report Bug Copy Issue Report It seems like you are calling the size function `count()` as part of the test condition. You might want to compute the size beforehand, and not on each iteration. If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: for ($i=0; $i<count($array); $i++) { // calls count() on each iteration } // Better for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once } Loading history...
106	30	$tmp[] = $this->getVariableUsages($fragments[$i]);
107		}
108	151	$usages = call_user_func_array('array_merge', $tmp);
109	151	$this->recursiveVariableUsages[$operation] = $usages;
110		}
111
112	151	return $usages;
113		}
114
115		/**
116		* @return mixed[][] List of ['node' => VariableNode, 'type' => ?InputObjectType]
117		*/
118	151	private function getVariableUsages(HasSelectionSet $node)
119		{
120	151	$usages = $this->variableUsages[$node] ?? null;
121
122	151	if (! $usages) {
123	151	$newUsages = [];
124	151	$typeInfo = new TypeInfo($this->schema);
125	151	Visitor::visit(
126	151	$node,
127	151	Visitor::visitWithTypeInfo(
128	151	$typeInfo,
129		[
130		NodeKind::VARIABLE_DEFINITION => function () {
131	58	return false;
132	151	},
133		NodeKind::VARIABLE => function (VariableNode $variable) use (
134	60	&$newUsages,
135	60	$typeInfo
136		) {
137	60	$newUsages[] = ['node' => $variable, 'type' => $typeInfo->getInputType()];
138	151	},
139		]
140		)
141		);
142	151	$usages = $newUsages;
143	151	$this->variableUsages[$node] = $usages;
144		}
145
146	151	return $usages;
147		}
148
149		/**
150		* @return FragmentDefinitionNode[]
151		*/
152	156	public function getRecursivelyReferencedFragments(OperationDefinitionNode $operation)
153		{
154	156	$fragments = $this->recursivelyReferencedFragments[$operation] ?? null;
155
156	156	if (! $fragments) {
157	156	$fragments = [];
158	156	$collectedNames = [];
159	156	$nodesToVisit = [$operation];
160	156	while (! empty($nodesToVisit)) {
161	156	$node = array_pop($nodesToVisit);
162	156	$spreads = $this->getFragmentSpreads($node);
163	156	for ($i = 0; $i < count($spreads); $i++) {
		0 ignored issues – show Performance Best Practice introduced 2018-06-19 12:00 UTC by Report Bug Copy Issue Report It seems like you are calling the size function `count()` as part of the test condition. You might want to compute the size beforehand, and not on each iteration. If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: for ($i=0; $i<count($array); $i++) { // calls count() on each iteration } // Better for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once } Loading history...
164	35	$fragName = $spreads[$i]->name->value;
165
166	35	if (! empty($collectedNames[$fragName])) {
167	6	continue;
168		}
169
170	35	$collectedNames[$fragName] = true;
171	35	$fragment = $this->getFragment($fragName);
172	35	if (! $fragment) {
173	1	continue;
174		}
175
176	34	$fragments[] = $fragment;
177	34	$nodesToVisit[] = $fragment;
178		}
179		}
180	156	$this->recursivelyReferencedFragments[$operation] = $fragments;
181		}
182
183	156	return $fragments;
184		}
185
186		/**
187		* @return FragmentSpreadNode[]
188		*/
189	171	public function getFragmentSpreads(HasSelectionSet $node)
190		{
191	171	$spreads = $this->fragmentSpreads[$node] ?? null;
192	171	if (! $spreads) {
193	171	$spreads = [];
194	171	$setsToVisit = [$node->selectionSet];
		0 ignored issues – show Bug introduced 2018-06-19 12:00 UTC by Report Bug Copy Issue Report Accessing `selectionSet` on the interface `GraphQL\Language\AST\HasSelectionSet` suggest that you code against a concrete implementation. How about adding an `instanceof` check? Loading history...
195	171	while (! empty($setsToVisit)) {
196	171	$set = array_pop($setsToVisit);
197
198	171	for ($i = 0; $i < count($set->selections); $i++) {
		0 ignored issues – show Performance Best Practice introduced 2018-06-19 12:00 UTC by Report Bug Copy Issue Report It seems like you are calling the size function `count()` as part of the test condition. You might want to compute the size beforehand, and not on each iteration. If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: for ($i=0; $i<count($array); $i++) { // calls count() on each iteration } // Better for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once } Loading history...
199	171	$selection = $set->selections[$i];
200	171	if ($selection->kind === NodeKind::FRAGMENT_SPREAD) {
201	50	$spreads[] = $selection;
202	163	} elseif ($selection->selectionSet) {
203	93	$setsToVisit[] = $selection->selectionSet;
204		}
205		}
206		}
207	171	$this->fragmentSpreads[$node] = $spreads;
208		}
209
210	171	return $spreads;
211		}
212
213		/**
214		* @param string $name
215		* @return FragmentDefinitionNode\|null
216		*/
217	80	public function getFragment($name)
218		{
219	80	$fragments = $this->fragments;
220	80	if (! $fragments) {
		0 ignored issues – show Bug Best Practice introduced 2018-06-19 12:00 UTC by Report Bug Copy Issue Report The expression `$fragments` of type `GraphQL\Language\AST\FragmentDefinitionNode[]` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
221	80	$fragments = [];
222	80	foreach ($this->getDocument()->definitions as $statement) {
223	80	if ($statement->kind !== NodeKind::FRAGMENT_DEFINITION) {
		0 ignored issues – show Bug introduced 2018-06-19 12:00 UTC by Report Bug Copy Issue Report Accessing `kind` on the interface `GraphQL\Language\AST\DefinitionNode` suggest that you code against a concrete implementation. How about adding an `instanceof` check? Loading history...
224	46	continue;
225		}
226
227	80	$fragments[$statement->name->value] = $statement;
		0 ignored issues – show Bug introduced 2018-06-19 12:00 UTC by Report Bug Copy Issue Report Accessing `name` on the interface `GraphQL\Language\AST\DefinitionNode` suggest that you code against a concrete implementation. How about adding an `instanceof` check? Loading history...
228		}
229	80	$this->fragments = $fragments;
230		}
231
232	80	return $fragments[$name] ?? null;
233		}
234
235		/**
236		* @return DocumentNode
237		*/
238	131	public function getDocument()
239		{
240	131	return $this->ast;
241		}
242
243		/**
244		* Returns OutputType
245		*
246		* @return Type
247		*/
248	115	public function getType()
249		{
250	115	return $this->typeInfo->getType();
251		}
252
253		/**
254		* @return Type
255		*/
256	205	public function getParentType()
257		{
258	205	return $this->typeInfo->getParentType();
259		}
260
261		/**
262		* @return InputType
263		*/
264	129	public function getInputType()
265		{
266	129	return $this->typeInfo->getInputType();
267		}
268
269		/**
270		* @return InputType
271		*/
272	18	public function getParentInputType()
273		{
274	18	return $this->typeInfo->getParentInputType();
275		}
276
277		/**
278		* @return FieldDefinition
279		*/
280	142	public function getFieldDef()
281		{
282	142	return $this->typeInfo->getFieldDef();
283		}
284
285	5	public function getDirective()
286		{
287	5	return $this->typeInfo->getDirective();
288		}
289
290	61	public function getArgument()
291		{
292	61	return $this->typeInfo->getArgument();
293		}
294		}
295

webonyx / graphql-php

Push — master ( e31947...cc39b3 )

ValidationContext::getFragmentSpreads() A

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

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