Parser - Code Metrics - Inspection of "Replace error handling with error handler middlewa..." - Youshido/GraphQL - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#146)

unknown

created 2017-05-12 11:22 UTC

Parser F

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	391
Duplicated Lines	4.09 %

Coupling/Cohesion

Components	1
Dependencies	16

Test Coverage

Coverage

96.5%

Importance

Changes	2
Bugs	1	Features	0

Metric	Value
wmc	87
lcom	1
cbo	16
dl	16
loc	391
ccs	193
cts	200
cp	0.965
rs	1.5789
c	2
b	1
f	0

20 Methods

Rating	Name	Duplication	Size	Complexity
A	expectMulti()	0	8	2
A	parseFragmentReference()	0	9	1
A	findVariable()	0	11	3
C	parse()	0	35	8
A	init()	0	13	1
C	parseBody()	0	33	8
B	parseVariables()	0	46	6
B	parseVariableReference()	0	21	5
A	eatIdentifierToken()	0	9	1
C	parseBodyItem()	16	37	12
A	parseArgumentList()	0	14	3
A	parseArgument()	0	8	1
D	parseValue()	0	25	10
A	parseList()	0	13	4
C	parseListValue()	0	23	10
A	parseObject()	0	17	4
A	parseFragment()	0	12	1
A	eat()	0	8	2
A	eatMulti()	0	8	2
A	matchMulti()	0	10	3

How to fix Duplicated Code Complexity

Duplicated Code

Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.

Common duplication problems, and corresponding solutions are:

If you have the same expression in different places: Extract expression to a method
If you have the same method in different sub-classes: Extract method, and pull up field to the parent class
If you have the same code in unrelated classes: Consider extracting the code to a new class, and injecting that class

Complex Class

Tip: Before tackling complexity, make sure that you eliminate any duplication first. This often can reduce the size of classes significantly.

Complex classes like Parser often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.

Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.

While breaking up the class, it is a good idea to analyze how other classes use Parser, and based on these observations, apply Extract Interface, too.

<?php
/*
* This file is a part of graphql-youshido project.
*
* @author Portey Vasil <[email protected]>
* created: 11/23/15 1:22 AM
*/

namespace Youshido\GraphQL\Parser;


use Youshido\GraphQL\Exception\Parser\SyntaxErrorException;
use Youshido\GraphQL\Parser\Ast\Argument;
use Youshido\GraphQL\Parser\Ast\ArgumentValue\InputList;
use Youshido\GraphQL\Parser\Ast\ArgumentValue\InputObject;
use Youshido\GraphQL\Parser\Ast\ArgumentValue\Literal;
use Youshido\GraphQL\Parser\Ast\ArgumentValue\Variable;
use Youshido\GraphQL\Parser\Ast\ArgumentValue\VariableReference;
use Youshido\GraphQL\Parser\Ast\Field;
use Youshido\GraphQL\Parser\Ast\Fragment;
use Youshido\GraphQL\Parser\Ast\FragmentReference;
use Youshido\GraphQL\Parser\Ast\Mutation;
use Youshido\GraphQL\Parser\Ast\Query;
use Youshido\GraphQL\Parser\Ast\TypedFragmentReference;

class Parser extends Tokenizer
{

    /** @var array */
    private $data = [];

    public function parse($source = null)
    {
        $this->init($source);

        while (!$this->end()) {
            $tokenType = $this->peek()->getType();

            switch ($tokenType) {
                case Token::TYPE_LBRACE:
                case Token::TYPE_QUERY:
                    foreach ($this->parseBody() as $query) {
                        $this->data['queries'][] = $query;
                    }

                    break;

                case Token::TYPE_MUTATION:
                    foreach ($this->parseBody(Token::TYPE_MUTATION) as $query) {
                        $this->data['mutations'][] = $query;
                    }

                    break;

                case Token::TYPE_FRAGMENT:
                    $this->data['fragments'][] = $this->parseFragment();

                    break;

                default:
                    throw new SyntaxErrorException('Incorrect request syntax', $this->getLocation());
            }
        }

        return $this->data;
    }

    private function init($source = null)
    {
        $this->initTokenizer($source);

        $this->data = [
            'queries'            => [],
            'mutations'          => [],
            'fragments'          => [],
            'fragmentReferences' => [],
            'variables'          => [],
            'variableReferences' => []
        ];
    }

    protected function parseBody($token = Token::TYPE_QUERY, $highLevel = true)
    {
        $fields = [];

        if ($highLevel && $this->peek()->getType() === $token) {
            $this->lex();
            $this->eat(Token::TYPE_IDENTIFIER);

            if ($this->match(Token::TYPE_LPAREN)) {
                $this->parseVariables();
            }
        }

        $this->lex();

        while (!$this->match(Token::TYPE_RBRACE) && !$this->end()) {
            if ($this->match(Token::TYPE_FRAGMENT_REFERENCE)) {
                $this->lex();

                if ($this->eat(Token::TYPE_ON)) {
                    $fields[] = $this->parseBodyItem(Token::TYPE_TYPED_FRAGMENT, $highLevel);
                } else {
                    $fields[] = $this->parseFragmentReference();
                }
            } else {
                $fields[] = $this->parseBodyItem($token, $highLevel);
            }
        }

        $this->expect(Token::TYPE_RBRACE);

        return $fields;
    }

    protected function parseVariables()
    {
        $this->eat(Token::TYPE_LPAREN);

        while (!$this->match(Token::TYPE_RPAREN) && !$this->end()) {
            $variableToken = $this->eat(Token::TYPE_VARIABLE);
            $nameToken     = $this->eatIdentifierToken();
            $this->eat(Token::TYPE_COLON);

            $isArray              = false;
            $arrayElementNullable = true;

            if ($this->match(Token::TYPE_LSQUARE_BRACE)) {
                $isArray = true;

                $this->eat(Token::TYPE_LSQUARE_BRACE);
                $type = $this->eatIdentifierToken()->getData();

                if ($this->match(Token::TYPE_REQUIRED)) {
                    $arrayElementNullable = false;
                    $this->eat(Token::TYPE_REQUIRED);
                }

                $this->eat(Token::TYPE_RSQUARE_BRACE);
            } else {
                $type = $this->eatIdentifierToken()->getData();
            }

            $required = false;
            if ($this->match(Token::TYPE_REQUIRED)) {
                $required = true;
                $this->eat(Token::TYPE_REQUIRED);
            }

            $this->data['variables'][] = new Variable(
                $nameToken->getData(),
                $type,
                $required,
                $isArray,
                new Location($variableToken->getLine(), $variableToken->getColumn()),
                $arrayElementNullable
            );
        }

        $this->expect(Token::TYPE_RPAREN);
    }

    protected function expectMulti($types)
    {
        if ($this->matchMulti($types)) {
            return $this->lex();
        }

        throw $this->createUnexpectedException($this->peek());
    }

    protected function parseVariableReference()
    {
        $startToken = $this->expectMulti([Token::TYPE_VARIABLE]);

        if ($this->match(Token::TYPE_NUMBER) || $this->match(Token::TYPE_IDENTIFIER) || $this->match(Token::TYPE_QUERY)) {
            $name = $this->lex()->getData();

            $variable = $this->findVariable($name);
            if ($variable) {
                $variable->setUsed(true);
            }

            $variableReference = new VariableReference($name, $variable, new Location($startToken->getLine(), $startToken->getColumn()));

            $this->data['variableReferences'][] = $variableReference;

            return $variableReference;
        }

        throw $this->createUnexpectedException($this->peek());
    }

    protected function findVariable($name)
    {
        foreach ($this->data['variables'] as $variable) {
            /** @var $variable Variable */
            if ($variable->getName() == $name) {
                return $variable;
            }
        }

        return null;
    }

    protected function parseFragmentReference()
    {
        $nameToken         = $this->eatIdentifierToken();
        $fragmentReference = new FragmentReference($nameToken->getData(), new Location($nameToken->getLine(), $nameToken->getColumn()));

        $this->data['fragmentReferences'][] = $fragmentReference;

        return $fragmentReference;
    }

    protected function eatIdentifierToken()
    {
        return $this->expectMulti([
            Token::TYPE_IDENTIFIER,
            Token::TYPE_MUTATION,
            Token::TYPE_QUERY,
            Token::TYPE_FRAGMENT,
        ]);
    }

    protected function parseBodyItem($type = Token::TYPE_QUERY, $highLevel = true)
    {
        $nameToken = $this->eatIdentifierToken();
        $alias     = null;

        if ($this->eat(Token::TYPE_COLON)) {
            $alias     = $nameToken->getData();
            $nameToken = $this->eatIdentifierToken();
        }

        $bodyLocation = new Location($nameToken->getLine(), $nameToken->getColumn());
        $arguments    = $this->match(Token::TYPE_LPAREN) ? $this->parseArgumentList() : [];

        if ($this->match(Token::TYPE_LBRACE)) {
            $fields = $this->parseBody($type == Token::TYPE_TYPED_FRAGMENT ? Token::TYPE_QUERY : $type, false);

            if (!$fields) {

                throw $this->createUnexpectedTokenTypeException($this->lookAhead->getType());
            }

            if ($type == Token::TYPE_QUERY) {

                return new Query($nameToken->getData(), $alias, $arguments, $fields, $bodyLocation);
            } elseif ($type == Token::TYPE_TYPED_FRAGMENT) {
                return new TypedFragmentReference($nameToken->getData(), $fields, $bodyLocation);
            } else {
                return new Mutation($nameToken->getData(), $alias, $arguments, $fields, $bodyLocation);
            }
        } else {

            if ($highLevel && $type == Token::TYPE_MUTATION) {
                return new Mutation($nameToken->getData(), $alias, $arguments, [], $bodyLocation);
            } elseif ($highLevel && $type == Token::TYPE_QUERY) {
                return new Query($nameToken->getData(), $alias, $arguments, [], $bodyLocation);
            }

            return new Field($nameToken->getData(), $alias, $arguments, $bodyLocation);
        }
    }

    protected function parseArgumentList()
    {
        $args  = [];

        $this->expect(Token::TYPE_LPAREN);

        while (!$this->match(Token::TYPE_RPAREN) && !$this->end()) {
            $args[] = $this->parseArgument();
        }

        $this->expect(Token::TYPE_RPAREN);

        return $args;
    }

    protected function parseArgument()
    {
        $nameToken = $this->eatIdentifierToken();
        $this->expect(Token::TYPE_COLON);
        $value = $this->parseValue();

        return new Argument($nameToken->getData(), $value, new Location($nameToken->getLine(), $nameToken->getColumn()));
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
    }

    /**
     * @return array|InputList|InputObject|Literal|VariableReference
     *
     * @throws SyntaxErrorException
     */
    protected function parseValue()
    {
        switch ($this->lookAhead->getType()) {
            case Token::TYPE_LSQUARE_BRACE:
                return $this->parseList();

            case Token::TYPE_LBRACE:
                return $this->parseObject();

            case Token::TYPE_VARIABLE:
                return $this->parseVariableReference();

            case Token::TYPE_NUMBER:
            case Token::TYPE_STRING:
            case Token::TYPE_IDENTIFIER:
            case Token::TYPE_NULL:
            case Token::TYPE_TRUE:
            case Token::TYPE_FALSE:
                $token = $this->lex();

                return new Literal($token->getData(), new Location($token->getLine(), $token->getColumn()));
        }

        throw $this->createUnexpectedException($this->lookAhead);
    }

    protected function parseList($createType = true)
    {
        $startToken = $this->eat(Token::TYPE_LSQUARE_BRACE);

        $list = [];
        while (!$this->match(Token::TYPE_RSQUARE_BRACE) && !$this->end()) {
            $list[] = $this->parseListValue();
        }

        $this->expect(Token::TYPE_RSQUARE_BRACE);

        return $createType ? new InputList($list, new Location($startToken->getLine(), $startToken->getColumn())) : $list;
    }

    protected function parseListValue()
    {
        switch ($this->lookAhead->getType()) {
            case Token::TYPE_NUMBER:
            case Token::TYPE_STRING:
            case Token::TYPE_TRUE:
            case Token::TYPE_FALSE:
            case Token::TYPE_NULL:
            case Token::TYPE_IDENTIFIER:
                return $this->expect($this->lookAhead->getType())->getData();

            case Token::TYPE_VARIABLE:
                return $this->parseVariableReference();

            case Token::TYPE_LBRACE:
                return $this->parseObject(true);

            case Token::TYPE_LSQUARE_BRACE:
                return $this->parseList(false);
        }

        throw new SyntaxErrorException('Can\'t parse argument', $this->getLocation());
    }

    protected function parseObject($createType = true)
    {
        $startToken = $this->eat(Token::TYPE_LBRACE);

        $object = [];
        while (!$this->match(Token::TYPE_RBRACE) && !$this->end()) {
            $key = $this->expectMulti([Token::TYPE_STRING, Token::TYPE_IDENTIFIER])->getData();
            $this->expect(Token::TYPE_COLON);
            $value = $this->parseListValue();

            $object[$key] = $value;
        }

        $this->eat(Token::TYPE_RBRACE);

        return $createType ? new InputObject($object, new Location($startToken->getLine(), $startToken->getColumn())) : $object;
    }

    protected function parseFragment()
    {
        $this->lex();
        $nameToken = $this->eatIdentifierToken();

        $this->eat(Token::TYPE_ON);

        $model  = $this->eatIdentifierToken();
        $fields = $this->parseBody(Token::TYPE_QUERY, false);

        return new Fragment($nameToken->getData(), $model->getData(), $fields, new Location($nameToken->getLine(), $nameToken->getColumn()));
    }

    protected function eat($type)
    {
        if ($this->match($type)) {
            return $this->lex();
        }

        return null;
    }

    protected function eatMulti($types)
    {
        if ($this->matchMulti($types)) {
            return $this->lex();
        }

        return null;
    }

    protected function matchMulti($types)
    {
        foreach ($types as $type) {
            if ($this->peek()->getType() == $type) {
                return true;
            }
        }

        return false;
    }
}


1			<?php
2			/*
3			* This file is a part of graphql-youshido project.
4			*
5			* @author Portey Vasil <[email protected]>
6			* created: 11/23/15 1:22 AM
7			*/
8
9			namespace Youshido\GraphQL\Parser;
10
11
12			use Youshido\GraphQL\Exception\Parser\SyntaxErrorException;
13			use Youshido\GraphQL\Parser\Ast\Argument;
14			use Youshido\GraphQL\Parser\Ast\ArgumentValue\InputList;
15			use Youshido\GraphQL\Parser\Ast\ArgumentValue\InputObject;
16			use Youshido\GraphQL\Parser\Ast\ArgumentValue\Literal;
17			use Youshido\GraphQL\Parser\Ast\ArgumentValue\Variable;
18			use Youshido\GraphQL\Parser\Ast\ArgumentValue\VariableReference;
19			use Youshido\GraphQL\Parser\Ast\Field;
20			use Youshido\GraphQL\Parser\Ast\Fragment;
21			use Youshido\GraphQL\Parser\Ast\FragmentReference;
22			use Youshido\GraphQL\Parser\Ast\Mutation;
23			use Youshido\GraphQL\Parser\Ast\Query;
24			use Youshido\GraphQL\Parser\Ast\TypedFragmentReference;
25
26			class Parser extends Tokenizer
27			{
28
29			/** @var array */
30			private $data = [];
31
32	96		public function parse($source = null)
33			{
34	96		$this->init($source);
35
36	96		while (!$this->end()) {
37	95		$tokenType = $this->peek()->getType();
38
39			switch ($tokenType) {
40	95		case Token::TYPE_LBRACE:
41	44		case Token::TYPE_QUERY:
42	78		foreach ($this->parseBody() as $query) {
43	71		$this->data['queries'][] = $query;
44			}
45
46	74		break;
47
48	25		case Token::TYPE_MUTATION:
49	16		foreach ($this->parseBody(Token::TYPE_MUTATION) as $query) {
50	11		$this->data['mutations'][] = $query;
51			}
52
53	11		break;
54
55	9		case Token::TYPE_FRAGMENT:
56	8		$this->data['fragments'][] = $this->parseFragment();
57
58	8		break;
59
60			default:
61	1		throw new SyntaxErrorException('Incorrect request syntax', $this->getLocation());
62			}
63			}
64
65	86		return $this->data;
66			}
67
68	96		private function init($source = null)
69			{
70	96		$this->initTokenizer($source);
71
72	96		$this->data = [
73			'queries' => [],
74			'mutations' => [],
75			'fragments' => [],
76			'fragmentReferences' => [],
77			'variables' => [],
78			'variableReferences' => []
79			];
80	96		}
81
82	94		protected function parseBody($token = Token::TYPE_QUERY, $highLevel = true)
83			{
84	94		$fields = [];
85
86	94		if ($highLevel && $this->peek()->getType() === $token) {
87	40		$this->lex();
88	40		$this->eat(Token::TYPE_IDENTIFIER);
89
90	40		if ($this->match(Token::TYPE_LPAREN)) {
91	11		$this->parseVariables();
92			}
93			}
94
95	94		$this->lex();
96
97	94		while (!$this->match(Token::TYPE_RBRACE) && !$this->end()) {
98	91		if ($this->match(Token::TYPE_FRAGMENT_REFERENCE)) {
99	10		$this->lex();
100
101	10		if ($this->eat(Token::TYPE_ON)) {
102	3		$fields[] = $this->parseBodyItem(Token::TYPE_TYPED_FRAGMENT, $highLevel);
103			} else {
104	10		$fields[] = $this->parseFragmentReference();
105			}
106			} else {
107	91		$fields[] = $this->parseBodyItem($token, $highLevel);
108			}
109			}
110
111	86		$this->expect(Token::TYPE_RBRACE);
112
113	86		return $fields;
114			}
115
116	11		protected function parseVariables()
117			{
118	11		$this->eat(Token::TYPE_LPAREN);
119
120	11		while (!$this->match(Token::TYPE_RPAREN) && !$this->end()) {
121	11		$variableToken = $this->eat(Token::TYPE_VARIABLE);
122	11		$nameToken = $this->eatIdentifierToken();
123	11		$this->eat(Token::TYPE_COLON);
124
125	11		$isArray = false;
126	11		$arrayElementNullable = true;
127
128	11		if ($this->match(Token::TYPE_LSQUARE_BRACE)) {
129	2		$isArray = true;
130
131	2		$this->eat(Token::TYPE_LSQUARE_BRACE);
132	2		$type = $this->eatIdentifierToken()->getData();
133
134	2		if ($this->match(Token::TYPE_REQUIRED)) {
135	2		$arrayElementNullable = false;
136	2		$this->eat(Token::TYPE_REQUIRED);
137			}
138
139	2		$this->eat(Token::TYPE_RSQUARE_BRACE);
140			} else {
141	10		$type = $this->eatIdentifierToken()->getData();
142			}
143
144	11		$required = false;
145	11		if ($this->match(Token::TYPE_REQUIRED)) {
146	2		$required = true;
147	2		$this->eat(Token::TYPE_REQUIRED);
148			}
149
150	11		$this->data['variables'][] = new Variable(
151	11		$nameToken->getData(),
152			$type,
153			$required,
154			$isArray,
155	11		new Location($variableToken->getLine(), $variableToken->getColumn()),
156			$arrayElementNullable
157			);
158			}
159
160	11		$this->expect(Token::TYPE_RPAREN);
161	11		}
162
163	91		protected function expectMulti($types)
164			{
165	91		if ($this->matchMulti($types)) {
166	91		return $this->lex();
167			}
168
169	2		throw $this->createUnexpectedException($this->peek());
170			}
171
172	10		protected function parseVariableReference()
173			{
174	10		$startToken = $this->expectMulti([Token::TYPE_VARIABLE]);
175
176	10		if ($this->match(Token::TYPE_NUMBER) \|\| $this->match(Token::TYPE_IDENTIFIER) \|\| $this->match(Token::TYPE_QUERY)) {
177	10		$name = $this->lex()->getData();
178
179	10		$variable = $this->findVariable($name);
180	10		if ($variable) {
181	10		$variable->setUsed(true);
182			}
183
184	10		$variableReference = new VariableReference($name, $variable, new Location($startToken->getLine(), $startToken->getColumn()));
185
186	10		$this->data['variableReferences'][] = $variableReference;
187
188	10		return $variableReference;
189			}
190
191			throw $this->createUnexpectedException($this->peek());
192			}
193
194	10		protected function findVariable($name)
195			{
196	10		foreach ($this->data['variables'] as $variable) {
197			/** @var $variable Variable */
198	10		if ($variable->getName() == $name) {
199	10		return $variable;
200			}
201			}
202
203			return null;
204			}
205
206	8		protected function parseFragmentReference()
207			{
208	8		$nameToken = $this->eatIdentifierToken();
209	8		$fragmentReference = new FragmentReference($nameToken->getData(), new Location($nameToken->getLine(), $nameToken->getColumn()));
210
211	8		$this->data['fragmentReferences'][] = $fragmentReference;
212
213	8		return $fragmentReference;
214			}
215
216	91		protected function eatIdentifierToken()
217			{
218	91		return $this->expectMulti([
219	91		Token::TYPE_IDENTIFIER,
220	91		Token::TYPE_MUTATION,
221	91		Token::TYPE_QUERY,
222	91		Token::TYPE_FRAGMENT,
223			]);
224			}
225
226	91		protected function parseBodyItem($type = Token::TYPE_QUERY, $highLevel = true)
227			{
228	91		$nameToken = $this->eatIdentifierToken();
229	91		$alias = null;
230
231	91		if ($this->eat(Token::TYPE_COLON)) {
232	17		$alias = $nameToken->getData();
233	17		$nameToken = $this->eatIdentifierToken();
234			}
235
236	91		$bodyLocation = new Location($nameToken->getLine(), $nameToken->getColumn());
237	91		$arguments = $this->match(Token::TYPE_LPAREN) ? $this->parseArgumentList() : [];
238
239	84		if ($this->match(Token::TYPE_LBRACE)) {
240	56		$fields = $this->parseBody($type == Token::TYPE_TYPED_FRAGMENT ? Token::TYPE_QUERY : $type, false);
241
242	55		if (!$fields) {
			0 ignored issues – show Bug Best Practice introduced 2016-11-01 14:21 UTC by Report Bug Copy Issue Report The expression `$fields` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `empty($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...
243	3		throw $this->createUnexpectedTokenTypeException($this->lookAhead->getType());
244			}
245
246	54	View Code Duplication	if ($type == Token::TYPE_QUERY) {
			0 ignored issues – show Duplication introduced 2016-05-21 01:18 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
247	52		return new Query($nameToken->getData(), $alias, $arguments, $fields, $bodyLocation);
248	6		} elseif ($type == Token::TYPE_TYPED_FRAGMENT) {
249	3		return new TypedFragmentReference($nameToken->getData(), $fields, $bodyLocation);
250			} else {
251	3		return new Mutation($nameToken->getData(), $alias, $arguments, $fields, $bodyLocation);
252			}
253		View Code Duplication	} else {
			0 ignored issues – show Duplication introduced 2016-05-21 01:18 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
254	82		if ($highLevel && $type == Token::TYPE_MUTATION) {
255	9		return new Mutation($nameToken->getData(), $alias, $arguments, [], $bodyLocation);
256	74		} elseif ($highLevel && $type == Token::TYPE_QUERY) {
257	24		return new Query($nameToken->getData(), $alias, $arguments, [], $bodyLocation);
258			}
259
260	54		return new Field($nameToken->getData(), $alias, $arguments, $bodyLocation);
261			}
262			}
263
264	54		protected function parseArgumentList()
265			{
266	54		$args = [];
267
268	54		$this->expect(Token::TYPE_LPAREN);
269
270	54		while (!$this->match(Token::TYPE_RPAREN) && !$this->end()) {
271	54		$args[] = $this->parseArgument();
272			}
273
274	48		$this->expect(Token::TYPE_RPAREN);
275
276	47		return $args;
277			}
278
279	54		protected function parseArgument()
280			{
281	54		$nameToken = $this->eatIdentifierToken();
282	54		$this->expect(Token::TYPE_COLON);
283	53		$value = $this->parseValue();
284
285	49		return new Argument($nameToken->getData(), $value, new Location($nameToken->getLine(), $nameToken->getColumn()));
			0 ignored issues – show Bug introduced 2016-11-19 05:02 UTC by Report Bug Copy Issue Report It seems like `$value` defined by `$this->parseValue()` on line `283` can also be of type `array`; however, `Youshido\GraphQL\Parser\...Argument::__construct()` does only seem to accept `object<Youshido\GraphQL\...erfaces\ValueInterface>`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
286			}
287
288			/**
289			* @return array\|InputList\|InputObject\|Literal\|VariableReference
290			*
291			* @throws SyntaxErrorException
292			*/
293	53		protected function parseValue()
294			{
295	53		switch ($this->lookAhead->getType()) {
296	53		case Token::TYPE_LSQUARE_BRACE:
297	7		return $this->parseList();
298
299	46		case Token::TYPE_LBRACE:
300	8		return $this->parseObject();
301
302	38		case Token::TYPE_VARIABLE:
303	10		return $this->parseVariableReference();
304
305	32		case Token::TYPE_NUMBER:
306	24		case Token::TYPE_STRING:
307	11		case Token::TYPE_IDENTIFIER:
308	8		case Token::TYPE_NULL:
309	5		case Token::TYPE_TRUE:
310	1		case Token::TYPE_FALSE:
311	31		$token = $this->lex();
312
313	31		return new Literal($token->getData(), new Location($token->getLine(), $token->getColumn()));
314			}
315
316	1		throw $this->createUnexpectedException($this->lookAhead);
317			}
318
319	9		protected function parseList($createType = true)
320			{
321	9		$startToken = $this->eat(Token::TYPE_LSQUARE_BRACE);
322
323	9		$list = [];
324	9		while (!$this->match(Token::TYPE_RSQUARE_BRACE) && !$this->end()) {
325	9		$list[] = $this->parseListValue();
326			}
327
328	8		$this->expect(Token::TYPE_RSQUARE_BRACE);
329
330	8		return $createType ? new InputList($list, new Location($startToken->getLine(), $startToken->getColumn())) : $list;
331			}
332
333	15		protected function parseListValue()
334			{
335	15		switch ($this->lookAhead->getType()) {
336	15		case Token::TYPE_NUMBER:
337	11		case Token::TYPE_STRING:
338	9		case Token::TYPE_TRUE:
339	9		case Token::TYPE_FALSE:
340	9		case Token::TYPE_NULL:
341	6		case Token::TYPE_IDENTIFIER:
342	14		return $this->expect($this->lookAhead->getType())->getData();
343
344	5		case Token::TYPE_VARIABLE:
345			return $this->parseVariableReference();
346
347	5		case Token::TYPE_LBRACE:
348	4		return $this->parseObject(true);
349
350	3		case Token::TYPE_LSQUARE_BRACE:
351	2		return $this->parseList(false);
352			}
353
354	1		throw new SyntaxErrorException('Can\'t parse argument', $this->getLocation());
355			}
356
357	9		protected function parseObject($createType = true)
358			{
359	9		$startToken = $this->eat(Token::TYPE_LBRACE);
360
361	9		$object = [];
362	9		while (!$this->match(Token::TYPE_RBRACE) && !$this->end()) {
363	9		$key = $this->expectMulti([Token::TYPE_STRING, Token::TYPE_IDENTIFIER])->getData();
364	9		$this->expect(Token::TYPE_COLON);
365	9		$value = $this->parseListValue();
366
367	9		$object[$key] = $value;
368			}
369
370	7		$this->eat(Token::TYPE_RBRACE);
371
372	7		return $createType ? new InputObject($object, new Location($startToken->getLine(), $startToken->getColumn())) : $object;
373			}
374
375	8		protected function parseFragment()
376			{
377	8		$this->lex();
378	8		$nameToken = $this->eatIdentifierToken();
379
380	8		$this->eat(Token::TYPE_ON);
381
382	8		$model = $this->eatIdentifierToken();
383	8		$fields = $this->parseBody(Token::TYPE_QUERY, false);
384
385	8		return new Fragment($nameToken->getData(), $model->getData(), $fields, new Location($nameToken->getLine(), $nameToken->getColumn()));
386			}
387
388	93		protected function eat($type)
389			{
390	93		if ($this->match($type)) {
391	46		return $this->lex();
392			}
393
394	88		return null;
395			}
396
397			protected function eatMulti($types)
398			{
399			if ($this->matchMulti($types)) {
400			return $this->lex();
401			}
402
403			return null;
404			}
405
406	91		protected function matchMulti($types)
407			{
408	91		foreach ($types as $type) {
409	91		if ($this->peek()->getType() == $type) {
410	91		return true;
411			}
412			}
413
414	2		return false;
415			}
416			}
417

Youshido / GraphQL