ValidationContext::getFragmentSpreads() - Code Metrics - Inspection of "Merge pull request #502 from simPod/drop-deprecate..." - webonyx/graphql-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 974258...005b1a )

by Vladimir

created 2019-07-12 09:31 UTC

ValidationContext::getFragmentSpreads() A

↳ Parent: ValidationContext

Complexity

Conditions	6
Paths	2

Size

Total Lines	23
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	15
CRAP Score	6

Importance

Changes

Metric	Value
eloc	14
dl	0
loc	23
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\SelectionSetNode;
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 === null) {
            $usages    = $this->getVariableUsages($operation);
            $fragments = $this->getRecursivelyReferencedFragments($operation);

            $tmp = [$usages];
            foreach ($fragments as $i => $fragment) {
                $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 === null) {
            $newUsages = [];
            $typeInfo  = new TypeInfo($this->schema);
            Visitor::visit(
                $node,
                Visitor::visitWithTypeInfo(
                    $typeInfo,
                    [
                        NodeKind::VARIABLE_DEFINITION => static function () {
                            return false;
                        },
                        NodeKind::VARIABLE            => static 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 === null) {
            $fragments      = [];
            $collectedNames = [];
            $nodesToVisit   = [$operation];
            while (! empty($nodesToVisit)) {
                $node    = array_pop($nodesToVisit);
                $spreads = $this->getFragmentSpreads($node);
                foreach ($spreads as $spread) {
                    $fragName = $spread->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 === null) {
            $spreads = [];
            /** @var SelectionSetNode[] $setsToVisit */
            $setsToVisit = [$node->selectionSet];

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

                for ($i = 0, $selectionCount = count($set->selections); $i < $selectionCount; $i++) {
                    $selection = $set->selections[$i];
                    if ($selection instanceof FragmentSpreadNode) {
                        $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 instanceof FragmentDefinitionNode)) {
                    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\SelectionSetNode;
15		use GraphQL\Language\AST\VariableNode;
16		use GraphQL\Language\Visitor;
17		use GraphQL\Type\Definition\FieldDefinition;
18		use GraphQL\Type\Definition\InputType;
19		use GraphQL\Type\Definition\Type;
20		use GraphQL\Type\Schema;
21		use GraphQL\Utils\TypeInfo;
22		use SplObjectStorage;
23		use function array_pop;
24		use function call_user_func_array;
25		use function count;
26
27		/**
28		* An instance of this class is passed as the "this" context to all validators,
29		* allowing access to commonly useful contextual information from within a
30		* validation rule.
31		*/
32		class ValidationContext
33		{
34		/** @var Schema */
35		private $schema;
36
37		/** @var DocumentNode */
38		private $ast;
39
40		/** @var TypeInfo */
41		private $typeInfo;
42
43		/** @var Error[] */
44		private $errors;
45
46		/** @var FragmentDefinitionNode[] */
47		private $fragments;
48
49		/** @var SplObjectStorage */
50		private $fragmentSpreads;
51
52		/** @var SplObjectStorage */
53		private $recursivelyReferencedFragments;
54
55		/** @var SplObjectStorage */
56		private $variableUsages;
57
58		/** @var SplObjectStorage */
59		private $recursiveVariableUsages;
60
61	189	public function __construct(Schema $schema, DocumentNode $ast, TypeInfo $typeInfo)
62		{
63	189	$this->schema = $schema;
64	189	$this->ast = $ast;
65	189	$this->typeInfo = $typeInfo;
66	189	$this->errors = [];
67	189	$this->fragmentSpreads = new SplObjectStorage();
68	189	$this->recursivelyReferencedFragments = new SplObjectStorage();
69	189	$this->variableUsages = new SplObjectStorage();
70	189	$this->recursiveVariableUsages = new SplObjectStorage();
71	189	}
72
73	46	public function reportError(Error $error)
74		{
75	46	$this->errors[] = $error;
76	46	}
77
78		/**
79		* @return Error[]
80		*/
81	189	public function getErrors()
82		{
83	189	return $this->errors;
84		}
85
86		/**
87		* @return Schema
88		*/
89	150	public function getSchema()
90		{
91	150	return $this->schema;
92		}
93
94		/**
95		* @return mixed[][] List of ['node' => VariableNode, 'type' => ?InputObjectType]
96		*/
97	103	public function getRecursiveVariableUsages(OperationDefinitionNode $operation)
98		{
99	103	$usages = $this->recursiveVariableUsages[$operation] ?? null;
100
101	103	if ($usages === null) {
102	103	$usages = $this->getVariableUsages($operation);
103	103	$fragments = $this->getRecursivelyReferencedFragments($operation);
104
105	103	$tmp = [$usages];
106	103	foreach ($fragments as $i => $fragment) {
107	10	$tmp[] = $this->getVariableUsages($fragments[$i]);
108		}
109	103	$usages = call_user_func_array('array_merge', $tmp);
110	103	$this->recursiveVariableUsages[$operation] = $usages;
111		}
112
113	103	return $usages;
114		}
115
116		/**
117		* @return mixed[][] List of ['node' => VariableNode, 'type' => ?InputObjectType]
118		*/
119	103	private function getVariableUsages(HasSelectionSet $node)
120		{
121	103	$usages = $this->variableUsages[$node] ?? null;
122
123	103	if ($usages === null) {
124	103	$newUsages = [];
125	103	$typeInfo = new TypeInfo($this->schema);
126	103	Visitor::visit(
127	103	$node,
128	103	Visitor::visitWithTypeInfo(
129	103	$typeInfo,
130		[
131		NodeKind::VARIABLE_DEFINITION => static function () {
132	11	return false;
133	103	},
134		NodeKind::VARIABLE => static function (VariableNode $variable) use (
135	11	&$newUsages,
136	11	$typeInfo
137		) {
138	11	$newUsages[] = ['node' => $variable, 'type' => $typeInfo->getInputType()];
139	103	},
140		]
141		)
142		);
143	103	$usages = $newUsages;
144	103	$this->variableUsages[$node] = $usages;
145		}
146
147	103	return $usages;
148		}
149
150		/**
151		* @return FragmentDefinitionNode[]
152		*/
153	103	public function getRecursivelyReferencedFragments(OperationDefinitionNode $operation)
154		{
155	103	$fragments = $this->recursivelyReferencedFragments[$operation] ?? null;
156
157	103	if ($fragments === null) {
158	103	$fragments = [];
159	103	$collectedNames = [];
160	103	$nodesToVisit = [$operation];
161	103	while (! empty($nodesToVisit)) {
162	103	$node = array_pop($nodesToVisit);
163	103	$spreads = $this->getFragmentSpreads($node);
164	103	foreach ($spreads as $spread) {
165	10	$fragName = $spread->name->value;
166
167	10	if (! empty($collectedNames[$fragName])) {
168	4	continue;
169		}
170
171	10	$collectedNames[$fragName] = true;
172	10	$fragment = $this->getFragment($fragName);
173	10	if (! $fragment) {
174		continue;
175		}
176
177	10	$fragments[] = $fragment;
178	10	$nodesToVisit[] = $fragment;
179		}
180		}
181	103	$this->recursivelyReferencedFragments[$operation] = $fragments;
182		}
183
184	103	return $fragments;
185		}
186
187		/**
188		* @return FragmentSpreadNode[]
189		*/
190	104	public function getFragmentSpreads(HasSelectionSet $node)
191		{
192	104	$spreads = $this->fragmentSpreads[$node] ?? null;
193	104	if ($spreads === null) {
194	104	$spreads = [];
195		/** @var SelectionSetNode[] $setsToVisit */
196	104	$setsToVisit = [$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...
197	104	while (! empty($setsToVisit)) {
198	104	$set = array_pop($setsToVisit);
199
200	104	for ($i = 0, $selectionCount = count($set->selections); $i < $selectionCount; $i++) {
201	104	$selection = $set->selections[$i];
202	104	if ($selection instanceof FragmentSpreadNode) {
203	10	$spreads[] = $selection;
204	104	} elseif ($selection->selectionSet) {
205	58	$setsToVisit[] = $selection->selectionSet;
206		}
207		}
208		}
209	104	$this->fragmentSpreads[$node] = $spreads;
210		}
211
212	104	return $spreads;
213		}
214
215		/**
216		* @param string $name
217		*
218		* @return FragmentDefinitionNode\|null
219		*/
220	14	public function getFragment($name)
221		{
222	14	$fragments = $this->fragments;
223	14	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...
224	14	$fragments = [];
225	14	foreach ($this->getDocument()->definitions as $statement) {
226	14	if (! ($statement instanceof FragmentDefinitionNode)) {
227	14	continue;
228		}
229
230	14	$fragments[$statement->name->value] = $statement;
231		}
232	14	$this->fragments = $fragments;
233		}
234
235	14	return $fragments[$name] ?? null;
236		}
237
238		/**
239		* @return DocumentNode
240		*/
241	173	public function getDocument()
242		{
243	173	return $this->ast;
244		}
245
246		/**
247		* Returns OutputType
248		*
249		* @return Type
250		*/
251	104	public function getType()
252		{
253	104	return $this->typeInfo->getType();
254		}
255
256		/**
257		* @return Type
258		*/
259	128	public function getParentType()
260		{
261	128	return $this->typeInfo->getParentType();
262		}
263
264		/**
265		* @return InputType
266		*/
267	53	public function getInputType()
268		{
269	53	return $this->typeInfo->getInputType();
270		}
271
272		/**
273		* @return InputType
274		*/
275		public function getParentInputType()
276		{
277		return $this->typeInfo->getParentInputType();
278		}
279
280		/**
281		* @return FieldDefinition
282		*/
283	104	public function getFieldDef()
284		{
285	104	return $this->typeInfo->getFieldDef();
286		}
287
288		public function getDirective()
289		{
290		return $this->typeInfo->getDirective();
291		}
292
293	52	public function getArgument()
294		{
295	52	return $this->typeInfo->getArgument();
296		}
297		}
298

webonyx / graphql-php

Push — master ( 974258...005b1a )

ValidationContext::getFragmentSpreads() A

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