Walker::resolveReferences() - Code Metrics - Inspection of "Change Registry::getConstraints() to accept schema..." - stefk/JVal - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#5)

by Jan

created 2016-04-08 12:53 UTC

Walker::resolveReferences() C

↳ Parent: Walker

Complexity

Conditions	12
Paths	25

Size

Total Lines	42
Code Lines	25

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	32
CRAP Score	12

Metric	Value
dl	0
loc	42
ccs	32
cts	32
cp	1
rs	5.1612
cc	12
eloc	25
nc	25
nop	2
crap	12

How to fix Complexity

<?php

/*
 * This file is part of the JVal package.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace JVal;

use stdClass;

/**
 * Implements the three steps needed to perform a JSON Schema validation,
 * i.e. distinct methods to recursively:.
 *
 * 1) resolve JSON pointer references within schema
 * 2) normalize and validate the syntax of the schema
 * 3) validate a given instance against it
 */
class Walker
{
    /**
     * @var Registry
     */
    private $registry;

    /**
     * @var Resolver
     */
    private $resolver;

    /**
     * @var stdClass[]
     */
    private $parsedSchemas = [];

    /**
     * @var stdClass[]
     */
    private $resolvedSchemas = [];

    /**
     * Constructor.
     *
     * @param Registry $registry
     * @param Resolver $resolver
     */
    public function __construct(Registry $registry, Resolver $resolver)
    {
        $this->registry = $registry;
        $this->resolver = $resolver;
    }

    /**
     * Recursively resolve JSON pointer references within a given schema.
     *
     * @param stdClass $schema The schema to resolve
     * @param Uri      $uri    The URI of the schema
     *
     * @return stdClass
     */
    public function resolveReferences(stdClass $schema, Uri $uri)
    {
        if ($this->isLooping($schema, $this->resolvedSchemas)) {
            return $schema;
        }

        if (!$this->resolver->hasBaseSchema()) {
            $this->resolver->setBaseSchema($schema, $uri);
        }

        $inScope = false;

        if (property_exists($schema, 'id') && is_string($schema->id)) {
            $this->resolver->enter(new Uri($schema->id));
            $inScope = true;
        }

        if (property_exists($schema, '$ref')) {
            $resolved = $this->resolver->resolve($schema);
            $this->resolver->enter($resolved[0], $resolved[1]);
            $schema = $this->resolveReferences($resolved[1], $resolved[0]);
            $this->resolver->leave();
        } else {
            foreach ($schema as $property => $value) {
                if (is_object($value)) {
                    $schema->{$property} = $this->resolveReferences($value, $uri);
                } elseif (is_array($value)) {
                    foreach ($value as $index => $element) {
                        if (is_object($element)) {
                            $schema->{$property}[$index] = $this->resolveReferences($element, $uri);
                        }
                    }
                }
            }
        }

        if ($inScope) {
            $this->resolver->leave();
        }

        return $schema;
    }

    /**
     * Recursively normalizes a given schema and validates its syntax.
     *
     * @param stdClass $schema
     * @param Context  $context
     *
     * @return stdClass
     */
    public function parseSchema(stdClass $schema, Context $context)
    {
        if ($this->isLooping($schema, $this->parsedSchemas)) {
            return $schema;
        }

        foreach ($this->getConstraints($schema, $context) as $constraint) {
            foreach ($constraint->keywords() as $keyword) {
                if (property_exists($schema, $keyword)) {
                    $constraint->normalize($schema, $context, $this);
                    break;
                }
            }
        }

        return $schema;
    }

    /**
     * Validates an instance against a given schema, populating a context
     * with encountered violations.
     *
     * @param $instance
     * @param stdClass $schema
     * @param Context  $context
     */
    public function applyConstraints($instance, stdClass $schema, Context $context)
    {
        $instanceType = Types::getPrimitiveTypeOf($instance);

        foreach ($this->getConstraints($schema, $context) as $constraint) {
            foreach ($constraint->keywords() as $keyword) {
                if ($constraint->supports($instanceType)) {
                    if (property_exists($schema, $keyword)) {
                        $constraint->apply($instance, $schema, $context, $this);
                        break;
                    }
                }
            }
        }
    }

    private function isLooping($item, array &$stack)
    {
        $isKnown = false;

        foreach ($stack as $knownItem) {
            if ($item === $knownItem) {
                $isKnown = true;
                break;
            }
        }

        if (!$isKnown) {
            $stack[] = $item;
        }

        return $isKnown;
    }

    private function getConstraints(stdClass $schema, Context $context)
    {
        if (property_exists($schema, '$schema')) {
            $context->setVersion($schema->{'$schema'});
        }

        return $this->registry->getConstraints($context->getVersion());
    }
}


1		<?php
2
3		/*
4		* This file is part of the JVal package.
5		*
6		* For the full copyright and license information, please view the LICENSE
7		* file that was distributed with this source code.
8		*/
9
10		namespace JVal;
11
12		use stdClass;
13
14		/**
15		* Implements the three steps needed to perform a JSON Schema validation,
16		* i.e. distinct methods to recursively:.
17		*
18		* 1) resolve JSON pointer references within schema
19		* 2) normalize and validate the syntax of the schema
20		* 3) validate a given instance against it
21		*/
22		class Walker
23		{
24		/**
25		* @var Registry
26		*/
27		private $registry;
28
29		/**
30		* @var Resolver
31		*/
32		private $resolver;
33
34		/**
35		* @var stdClass[]
36		*/
37		private $parsedSchemas = [];
38
39		/**
40		* @var stdClass[]
41		*/
42		private $resolvedSchemas = [];
43
44		/**
45		* Constructor.
46		*
47		* @param Registry $registry
48		* @param Resolver $resolver
49		*/
50	485	public function __construct(Registry $registry, Resolver $resolver)
51		{
52	485	$this->registry = $registry;
53	485	$this->resolver = $resolver;
54	485	}
55
56		/**
57		* Recursively resolve JSON pointer references within a given schema.
58		*
59		* @param stdClass $schema The schema to resolve
60		* @param Uri $uri The URI of the schema
61		*
62		* @return stdClass
63		*/
64	299	public function resolveReferences(stdClass $schema, Uri $uri)
65		{
66	299	if ($this->isLooping($schema, $this->resolvedSchemas)) {
67	20	return $schema;
68		}
69
70	299	if (!$this->resolver->hasBaseSchema()) {
71	299	$this->resolver->setBaseSchema($schema, $uri);
72	299	}
73
74	299	$inScope = false;
75
76	299	if (property_exists($schema, 'id') && is_string($schema->id)) {
77	7	$this->resolver->enter(new Uri($schema->id));
78	7	$inScope = true;
79	7	}
80
81	299	if (property_exists($schema, '$ref')) {
82	22	$resolved = $this->resolver->resolve($schema);
83	22	$this->resolver->enter($resolved[0], $resolved[1]);
84	22	$schema = $this->resolveReferences($resolved[1], $resolved[0]);
85	22	$this->resolver->leave();
86	22	} else {
87	299	foreach ($schema as $property => $value) {
88	299	if (is_object($value)) {
89	114	$schema->{$property} = $this->resolveReferences($value, $uri);
90	299	} elseif (is_array($value)) {
91	75	foreach ($value as $index => $element) {
92	73	if (is_object($element)) {
93	44	$schema->{$property}[$index] = $this->resolveReferences($element, $uri);
94	44	}
95	75	}
96	75	}
97	299	}
98		}
99
100	299	if ($inScope) {
101	7	$this->resolver->leave();
102	7	}
103
104	299	return $schema;
105		}
106
107		/**
108		* Recursively normalizes a given schema and validates its syntax.
109		*
110		* @param stdClass $schema
111		* @param Context $context
112		*
113		* @return stdClass
114		*/
115	357	public function parseSchema(stdClass $schema, Context $context)
116		{
117	357	if ($this->isLooping($schema, $this->parsedSchemas)) {
118	12	return $schema;
119		}
120
121	357	foreach ($this->getConstraints($schema, $context) as $constraint) {
122	357	foreach ($constraint->keywords() as $keyword) {
123	357	if (property_exists($schema, $keyword)) {
124	333	$constraint->normalize($schema, $context, $this);
125	333	break;
126		}
127	357	}
128	357	}
129
130	357	return $schema;
131		}
132
133		/**
134		* Validates an instance against a given schema, populating a context
135		* with encountered violations.
136		*
137		* @param $instance
138		* @param stdClass $schema
139		* @param Context $context
140		*/
141	348	public function applyConstraints($instance, stdClass $schema, Context $context)
142		{
143	348	$instanceType = Types::getPrimitiveTypeOf($instance);
144
145	348	foreach ($this->getConstraints($schema, $context) as $constraint) {
146	348	foreach ($constraint->keywords() as $keyword) {
147	348	if ($constraint->supports($instanceType)) {
148	348	if (property_exists($schema, $keyword)) {
149	307	$constraint->apply($instance, $schema, $context, $this);
150	307	break;
151		}
152	348	}
153	348	}
154	348	}
155	348	}
156
157	363	private function isLooping($item, array &$stack)
158		{
159	363	$isKnown = false;
160
161	363	foreach ($stack as $knownItem) {
162	202	if ($item === $knownItem) {
163	20	$isKnown = true;
164	20	break;
165		}
166	363	}
167
168	363	if (!$isKnown) {
169	363	$stack[] = $item;
170	363	}
171
172	363	return $isKnown;
173		}
174
175	357	private function getConstraints(stdClass $schema, Context $context)
176		{
177	357	if (property_exists($schema, '$schema')) {
178	4	$context->setVersion($schema->{'$schema'});
179	4	}
180
181	357	return $this->registry->getConstraints($context->getVersion());
182		}
183		}
184

stefk / JVal

Pull Request — master (#5)

Walker::resolveReferences() C

Complexity

Size

Duplication

Code Coverage

How to fix Complexity

Long Method

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