Collector::collectFields() - Code Metrics - simPod/graphql-php - Measure and Improve Code Quality continuously with Scrutinizer

Collector::collectFields() B
last analyzed 2020-03-20 22:01 UTC

↳ Parent: Collector

Complexity

Conditions	9
Paths	5

Size

Total Lines	28
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	17
CRAP Score	9

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	16
dl	0
loc	28
ccs	17
cts	17
cp	1
rs	8.0555
c	1
b	0
f	0
cc	9
nc	5
nop	2
crap	9

<?php

declare(strict_types=1);

namespace GraphQL\Experimental\Executor;

use Generator;
use GraphQL\Error\Error;
use GraphQL\Language\AST\BooleanValueNode;
use GraphQL\Language\AST\DefinitionNode;
use GraphQL\Language\AST\DocumentNode;
use GraphQL\Language\AST\EnumValueNode;
use GraphQL\Language\AST\FieldNode;
use GraphQL\Language\AST\FloatValueNode;
use GraphQL\Language\AST\FragmentDefinitionNode;
use GraphQL\Language\AST\FragmentSpreadNode;
use GraphQL\Language\AST\InlineFragmentNode;
use GraphQL\Language\AST\IntValueNode;
use GraphQL\Language\AST\ListValueNode;
use GraphQL\Language\AST\Node;
use GraphQL\Language\AST\NullValueNode;
use GraphQL\Language\AST\ObjectValueNode;
use GraphQL\Language\AST\OperationDefinitionNode;
use GraphQL\Language\AST\SelectionSetNode;
use GraphQL\Language\AST\StringValueNode;
use GraphQL\Language\AST\VariableNode;
use GraphQL\Type\Definition\AbstractType;
use GraphQL\Type\Definition\Directive;
use GraphQL\Type\Definition\ObjectType;
use GraphQL\Type\Definition\Type;
use GraphQL\Type\Introspection;
use GraphQL\Type\Schema;
use function sprintf;

/**
 * @internal
 */
class Collector
{
    /** @var Schema */
    private $schema;

    /** @var Runtime */
    private $runtime;

    /** @var OperationDefinitionNode|null */
    public $operation = null;

    /** @var FragmentDefinitionNode[] */
    public $fragments = [];

    /** @var ObjectType|null */
    public $rootType;

    /** @var FieldNode[][] */
    private $fields;

    /** @var array<string, bool> */
    private $visitedFragments;

    public function __construct(Schema $schema, Runtime $runtime)
    {
        $this->schema  = $schema;
        $this->runtime = $runtime;
    }

    public function initialize(DocumentNode $documentNode, ?string $operationName = null)
    {
        $hasMultipleAssumedOperations = false;

        foreach ($documentNode->definitions as $definitionNode) {
            /** @var DefinitionNode|Node $definitionNode */

            if ($definitionNode instanceof OperationDefinitionNode) {
                if ($operationName === null && $this->operation !== null) {
                    $hasMultipleAssumedOperations = true;
                }
                if ($operationName === null ||
                    (isset($definitionNode->name) && $definitionNode->name->value === $operationName)
                ) {
                    $this->operation = $definitionNode;
                }
            } elseif ($definitionNode instanceof FragmentDefinitionNode) {
                $this->fragments[$definitionNode->name->value] = $definitionNode;
            }
        }

        if ($this->operation === null) {
            if ($operationName !== null) {
                $this->runtime->addError(new Error(sprintf('Unknown operation named "%s".', $operationName)));
            } else {
                $this->runtime->addError(new Error('Must provide an operation.'));
            }

            return;
        }

        if ($hasMultipleAssumedOperations) {
            $this->runtime->addError(new Error('Must provide operation name if query contains multiple operations.'));

            return;
        }

        if ($this->operation->operation === 'query') {
            $this->rootType = $this->schema->getQueryType();
        } elseif ($this->operation->operation === 'mutation') {
            $this->rootType = $this->schema->getMutationType();
        } elseif ($this->operation->operation === 'subscription') {
            $this->rootType = $this->schema->getSubscriptionType();
        } else {
            $this->runtime->addError(new Error(sprintf('Cannot initialize collector with operation type "%s".', $this->operation->operation)));
        }
    }

    /**
     * @return Generator
     */
    public function collectFields(ObjectType $runtimeType, ?SelectionSetNode $selectionSet)
    {
        $this->fields           = [];
        $this->visitedFragments = [];

        $this->doCollectFields($runtimeType, $selectionSet);

        foreach ($this->fields as $resultName => $fieldNodes) {
            $fieldNode = $fieldNodes[0];
            $fieldName = $fieldNode->name->value;

            $argumentValueMap = null;
            if (! empty($fieldNode->arguments)) {
                foreach ($fieldNode->arguments as $argumentNode) {
                    $argumentValueMap                             = $argumentValueMap ?? [];
                    $argumentValueMap[$argumentNode->name->value] = $argumentNode->value;
                }
            }

            if ($fieldName !== Introspection::TYPE_NAME_FIELD_NAME &&
                ! ($runtimeType === $this->schema->getQueryType() && ($fieldName === Introspection::SCHEMA_FIELD_NAME || $fieldName === Introspection::TYPE_FIELD_NAME)) &&
                ! $runtimeType->hasField($fieldName)
            ) {
                // do not emit error
                continue;
            }

            yield new CoroutineContextShared($fieldNodes, $fieldName, $resultName, $argumentValueMap);
        }
    }

    private function doCollectFields(ObjectType $runtimeType, ?SelectionSetNode $selectionSet)
    {
        if ($selectionSet === null) {
            return;
        }

        foreach ($selectionSet->selections as $selection) {
            /** @var FieldNode|FragmentSpreadNode|InlineFragmentNode $selection */
            if (! empty($selection->directives)) {
                foreach ($selection->directives as $directiveNode) {
                    if ($directiveNode->name->value === Directive::SKIP_NAME) {
                        /** @var VariableNode|NullValueNode|IntValueNode|FloatValueNode|StringValueNode|BooleanValueNode|EnumValueNode|ListValueNode|ObjectValueNode|null $condition */
                        $condition = null;
                        foreach ($directiveNode->arguments as $argumentNode) {
                            if ($argumentNode->name->value === Directive::IF_ARGUMENT_NAME) {
                                $condition = $argumentNode->value;
                                break;
                            }
                        }

                        if ($condition === null) {
                            $this->runtime->addError(new Error(
                                sprintf('@%s directive is missing "%s" argument.', Directive::SKIP_NAME, Directive::IF_ARGUMENT_NAME),
                                $selection
                            ));
                        } else {
                            if ($this->runtime->evaluate($condition, Type::boolean()) === true) {
                                continue 2; // !!! advances outer loop
                            }
                        }
                    } elseif ($directiveNode->name->value === Directive::INCLUDE_NAME) {
                        /** @var VariableNode|NullValueNode|IntValueNode|FloatValueNode|StringValueNode|BooleanValueNode|EnumValueNode|ListValueNode|ObjectValueNode|null $condition */
                        $condition = null;
                        foreach ($directiveNode->arguments as $argumentNode) {
                            if ($argumentNode->name->value === Directive::IF_ARGUMENT_NAME) {
                                $condition = $argumentNode->value;
                                break;
                            }
                        }

                        if ($condition === null) {
                            $this->runtime->addError(new Error(
                                sprintf('@%s directive is missing "%s" argument.', Directive::INCLUDE_NAME, Directive::IF_ARGUMENT_NAME),
                                $selection
                            ));
                        } else {
                            if ($this->runtime->evaluate($condition, Type::boolean()) !== true) {
                                continue 2; // !!! advances outer loop
                            }
                        }
                    }
                }
            }

            if ($selection instanceof FieldNode) {
                $resultName = $selection->alias === null ? $selection->name->value : $selection->alias->value;

                if (! isset($this->fields[$resultName])) {
                    $this->fields[$resultName] = [];
                }

                $this->fields[$resultName][] = $selection;
            } elseif ($selection instanceof FragmentSpreadNode) {
                $fragmentName = $selection->name->value;

                if (isset($this->visitedFragments[$fragmentName])) {
                    continue;
                }

                if (! isset($this->fragments[$fragmentName])) {
                    $this->runtime->addError(new Error(
                        sprintf('Fragment "%s" does not exist.', $fragmentName),
                        $selection
                    ));
                    continue;
                }

                $this->visitedFragments[$fragmentName] = true;

                $fragmentDefinition = $this->fragments[$fragmentName];
                $conditionTypeName  = $fragmentDefinition->typeCondition->name->value;

                if (! $this->schema->hasType($conditionTypeName)) {
                    $this->runtime->addError(new Error(
                        sprintf('Cannot spread fragment "%s", type "%s" does not exist.', $fragmentName, $conditionTypeName),
                        $selection
                    ));
                    continue;
                }

                $conditionType = $this->schema->getType($conditionTypeName);

                if ($conditionType instanceof ObjectType) {
                    if ($runtimeType->name !== $conditionType->name) {
                        continue;
                    }
                } elseif ($conditionType instanceof AbstractType) {
                    if (! $this->schema->isPossibleType($conditionType, $runtimeType)) {
                        continue;
                    }
                }

                $this->doCollectFields($runtimeType, $fragmentDefinition->selectionSet);
            } elseif ($selection instanceof InlineFragmentNode) {
                if ($selection->typeCondition !== null) {
                    $conditionTypeName = $selection->typeCondition->name->value;

                    if (! $this->schema->hasType($conditionTypeName)) {
                        $this->runtime->addError(new Error(
                            sprintf('Cannot spread inline fragment, type "%s" does not exist.', $conditionTypeName),
                            $selection
                        ));
                        continue;
                    }

                    $conditionType = $this->schema->getType($conditionTypeName);

                    if ($conditionType instanceof ObjectType) {
                        if ($runtimeType->name !== $conditionType->name) {
                            continue;
                        }
                    } elseif ($conditionType instanceof AbstractType) {
                        if (! $this->schema->isPossibleType($conditionType, $runtimeType)) {
                            continue;
                        }
                    }
                }

                $this->doCollectFields($runtimeType, $selection->selectionSet);
            }
        }
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace GraphQL\Experimental\Executor;
6
7		use Generator;
8		use GraphQL\Error\Error;
9		use GraphQL\Language\AST\BooleanValueNode;
10		use GraphQL\Language\AST\DefinitionNode;
11		use GraphQL\Language\AST\DocumentNode;
12		use GraphQL\Language\AST\EnumValueNode;
13		use GraphQL\Language\AST\FieldNode;
14		use GraphQL\Language\AST\FloatValueNode;
15		use GraphQL\Language\AST\FragmentDefinitionNode;
16		use GraphQL\Language\AST\FragmentSpreadNode;
17		use GraphQL\Language\AST\InlineFragmentNode;
18		use GraphQL\Language\AST\IntValueNode;
19		use GraphQL\Language\AST\ListValueNode;
20		use GraphQL\Language\AST\Node;
21		use GraphQL\Language\AST\NullValueNode;
22		use GraphQL\Language\AST\ObjectValueNode;
23		use GraphQL\Language\AST\OperationDefinitionNode;
24		use GraphQL\Language\AST\SelectionSetNode;
25		use GraphQL\Language\AST\StringValueNode;
26		use GraphQL\Language\AST\VariableNode;
27		use GraphQL\Type\Definition\AbstractType;
28		use GraphQL\Type\Definition\Directive;
29		use GraphQL\Type\Definition\ObjectType;
30		use GraphQL\Type\Definition\Type;
31		use GraphQL\Type\Introspection;
32		use GraphQL\Type\Schema;
33		use function sprintf;
34
35		/**
36		* @internal
37		*/
38		class Collector
39		{
40		/** @var Schema */
41		private $schema;
42
43		/** @var Runtime */
44		private $runtime;
45
46		/** @var OperationDefinitionNode\|null */
47		public $operation = null;
48
49		/** @var FragmentDefinitionNode[] */
50		public $fragments = [];
51
52		/** @var ObjectType\|null */
53		public $rootType;
54
55		/** @var FieldNode[][] */
56		private $fields;
57
58		/** @var array<string, bool> */
59		private $visitedFragments;
60
61	253	public function __construct(Schema $schema, Runtime $runtime)
62		{
63	253	$this->schema = $schema;
64	253	$this->runtime = $runtime;
65	253	}
66
67	253	public function initialize(DocumentNode $documentNode, ?string $operationName = null)
68		{
69	253	$hasMultipleAssumedOperations = false;
70
71	253	foreach ($documentNode->definitions as $definitionNode) {
72		/** @var DefinitionNode\|Node $definitionNode */
73
74	253	if ($definitionNode instanceof OperationDefinitionNode) {
75	251	if ($operationName === null && $this->operation !== null) {
76	1	$hasMultipleAssumedOperations = true;
77		}
78	251	if ($operationName === null \|\|
79	251	(isset($definitionNode->name) && $definitionNode->name->value === $operationName)
80		) {
81	251	$this->operation = $definitionNode;
82		}
83	26	} elseif ($definitionNode instanceof FragmentDefinitionNode) {
84	253	$this->fragments[$definitionNode->name->value] = $definitionNode;
85		}
86		}
87
88	253	if ($this->operation === null) {
89	3	if ($operationName !== null) {
90	1	$this->runtime->addError(new Error(sprintf('Unknown operation named "%s".', $operationName)));
91		} else {
92	2	$this->runtime->addError(new Error('Must provide an operation.'));
93		}
94
95	3	return;
96		}
97
98	250	if ($hasMultipleAssumedOperations) {
99	1	$this->runtime->addError(new Error('Must provide operation name if query contains multiple operations.'));
100
101	1	return;
102		}
103
104	249	if ($this->operation->operation === 'query') {
105	241	$this->rootType = $this->schema->getQueryType();
106	8	} elseif ($this->operation->operation === 'mutation') {
107	6	$this->rootType = $this->schema->getMutationType();
108	2	} elseif ($this->operation->operation === 'subscription') {
109	2	$this->rootType = $this->schema->getSubscriptionType();
110		} else {
111		$this->runtime->addError(new Error(sprintf('Cannot initialize collector with operation type "%s".', $this->operation->operation)));
112		}
113	249	}
114
115		/**
116		* @return Generator
117		*/
118	238	public function collectFields(ObjectType $runtimeType, ?SelectionSetNode $selectionSet)
119		{
120	238	$this->fields = [];
121	238	$this->visitedFragments = [];
122
123	238	$this->doCollectFields($runtimeType, $selectionSet);
124
125	238	foreach ($this->fields as $resultName => $fieldNodes) {
126	229	$fieldNode = $fieldNodes[0];
127	229	$fieldName = $fieldNode->name->value;
128
129	229	$argumentValueMap = null;
130	229	if (! empty($fieldNode->arguments)) {
131	229	foreach ($fieldNode->arguments as $argumentNode) {
132	91	$argumentValueMap = $argumentValueMap ?? [];
133	91	$argumentValueMap[$argumentNode->name->value] = $argumentNode->value;
134		}
135		}
136
137	229	if ($fieldName !== Introspection::TYPE_NAME_FIELD_NAME &&
138	229	! ($runtimeType === $this->schema->getQueryType() && ($fieldName === Introspection::SCHEMA_FIELD_NAME \|\| $fieldName === Introspection::TYPE_FIELD_NAME)) &&
139	229	! $runtimeType->hasField($fieldName)
140		) {
141		// do not emit error
142	7	continue;
143		}
144
145	225	yield new CoroutineContextShared($fieldNodes, $fieldName, $resultName, $argumentValueMap);
146		}
147	238	}
148
149	238	private function doCollectFields(ObjectType $runtimeType, ?SelectionSetNode $selectionSet)
150		{
151	238	if ($selectionSet === null) {
152		return;
153		}
154
155	238	foreach ($selectionSet->selections as $selection) {
156		/** @var FieldNode\|FragmentSpreadNode\|InlineFragmentNode $selection */
157	238	if (! empty($selection->directives)) {
158	238	foreach ($selection->directives as $directiveNode) {
159	21	if ($directiveNode->name->value === Directive::SKIP_NAME) {
160		/** @var VariableNode\|NullValueNode\|IntValueNode\|FloatValueNode\|StringValueNode\|BooleanValueNode\|EnumValueNode\|ListValueNode\|ObjectValueNode\|null $condition */
161	13	$condition = null;
162	13	foreach ($directiveNode->arguments as $argumentNode) {
163	13	if ($argumentNode->name->value === Directive::IF_ARGUMENT_NAME) {
164	13	$condition = $argumentNode->value;
165	13	break;
166		}
167		}
168
169	13	if ($condition === null) {
170		$this->runtime->addError(new Error(
171		sprintf('@%s directive is missing "%s" argument.', Directive::SKIP_NAME, Directive::IF_ARGUMENT_NAME),
172		$selection
173		));
174		} else {
175	13	if ($this->runtime->evaluate($condition, Type::boolean()) === true) {
176	13	continue 2; // !!! advances outer loop
177		}
178		}
179	15	} elseif ($directiveNode->name->value === Directive::INCLUDE_NAME) {
180		/** @var VariableNode\|NullValueNode\|IntValueNode\|FloatValueNode\|StringValueNode\|BooleanValueNode\|EnumValueNode\|ListValueNode\|ObjectValueNode\|null $condition */
181	15	$condition = null;
182	15	foreach ($directiveNode->arguments as $argumentNode) {
183	15	if ($argumentNode->name->value === Directive::IF_ARGUMENT_NAME) {
184	15	$condition = $argumentNode->value;
185	15	break;
186		}
187		}
188
189	15	if ($condition === null) {
190		$this->runtime->addError(new Error(
191		sprintf('@%s directive is missing "%s" argument.', Directive::INCLUDE_NAME, Directive::IF_ARGUMENT_NAME),
192		$selection
193		));
194		} else {
195	15	if ($this->runtime->evaluate($condition, Type::boolean()) !== true) {
196	18	continue 2; // !!! advances outer loop
197		}
198		}
199		}
200		}
201		}
202
203	229	if ($selection instanceof FieldNode) {
204	229	$resultName = $selection->alias === null ? $selection->name->value : $selection->alias->value;
205
206	229	if (! isset($this->fields[$resultName])) {
207	229	$this->fields[$resultName] = [];
208		}
209
210	229	$this->fields[$resultName][] = $selection;
211	36	} elseif ($selection instanceof FragmentSpreadNode) {
212	14	$fragmentName = $selection->name->value;
213
214	14	if (isset($this->visitedFragments[$fragmentName])) {
215	1	continue;
216		}
217
218	14	if (! isset($this->fragments[$fragmentName])) {
219		$this->runtime->addError(new Error(
220		sprintf('Fragment "%s" does not exist.', $fragmentName),
221		$selection
222		));
223		continue;
224		}
225
226	14	$this->visitedFragments[$fragmentName] = true;
227
228	14	$fragmentDefinition = $this->fragments[$fragmentName];
229	14	$conditionTypeName = $fragmentDefinition->typeCondition->name->value;
230
231	14	if (! $this->schema->hasType($conditionTypeName)) {
232		$this->runtime->addError(new Error(
233		sprintf('Cannot spread fragment "%s", type "%s" does not exist.', $fragmentName, $conditionTypeName),
234		$selection
235		));
236		continue;
237		}
238
239	14	$conditionType = $this->schema->getType($conditionTypeName);
240
241	14	if ($conditionType instanceof ObjectType) {
242	13	if ($runtimeType->name !== $conditionType->name) {
243	13	continue;
244		}
245	1	} elseif ($conditionType instanceof AbstractType) {
246	1	if (! $this->schema->isPossibleType($conditionType, $runtimeType)) {
247		continue;
248		}
249		}
250
251	14	$this->doCollectFields($runtimeType, $fragmentDefinition->selectionSet);
252	24	} elseif ($selection instanceof InlineFragmentNode) {
253	24	if ($selection->typeCondition !== null) {
254	23	$conditionTypeName = $selection->typeCondition->name->value;
255
256	23	if (! $this->schema->hasType($conditionTypeName)) {
257		$this->runtime->addError(new Error(
258		sprintf('Cannot spread inline fragment, type "%s" does not exist.', $conditionTypeName),
259		$selection
260		));
261		continue;
262		}
263
264	23	$conditionType = $this->schema->getType($conditionTypeName);
265
266	23	if ($conditionType instanceof ObjectType) {
267	23	if ($runtimeType->name !== $conditionType->name) {
268	23	continue;
269		}
270		} elseif ($conditionType instanceof AbstractType) {
271		if (! $this->schema->isPossibleType($conditionType, $runtimeType)) {
272		continue;
273		}
274		}
275		}
276
277	229	$this->doCollectFields($runtimeType, $selection->selectionSet);
278		}
279		}
280	238	}
281		}
282

simPod / graphql-php

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Collector::collectFields() B last analyzed 2020-03-20 22:01 UTC

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Collector::collectFields() B
last analyzed 2020-03-20 22:01 UTC