Walker::resolveReferences() - Code Metrics - Inspection of "Merge pull request #8 from JanTvrdik/pr/fix_walker" - stefk/JVal - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 9a0752...0003b1 )

by Stéphane

created 2016-04-09 19:12 UTC

Walker::resolveReferences() A

↳ Parent: Walker

Complexity

Conditions	1
Paths	1

Size

Total Lines	8
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	5
CRAP Score	1

Importance

Changes	1
Bugs	1	Features	0

Metric	Value
c	1
b	1
f	0
dl	0
loc	8
ccs	5
cts	5
cp	1
rs	9.4285
cc	1
eloc	5
nc	1
nop	2
crap	1

<?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)
    {
        $this->resolver->setBaseSchema($schema, $uri);
        $schema = $this->doResolveReferences($schema, $uri);
        $this->resolver->clearStack();

        return $schema;
    }

    /**
     * @param stdClass $schema
     * @param Uri      $uri
     *
     * @return stdClass
     */
    private function doResolveReferences(stdClass $schema, Uri $uri)
    {
        if ($this->isLooping($schema, $this->resolvedSchemas)) {
            return $schema;
        }

        $inScope = false;
        if (property_exists($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 = $this->doResolveReferences($resolved[1], $resolved[0]);
            $this->resolver->leave();
        } else {
            foreach ($schema as $property => $value) {
                if (is_object($value)) {
                    $schema->{$property} = $this->doResolveReferences($value, $uri);
                } elseif (is_array($value)) {
                    foreach ($value as $index => $element) {
                        if (is_object($element)) {
                            $schema->{$property}[$index] = $this->doResolveReferences($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	$this->resolver->setBaseSchema($schema, $uri);
67	299	$schema = $this->doResolveReferences($schema, $uri);
68	299	$this->resolver->clearStack();
69
70	299	return $schema;
71		}
72
73		/**
74		* @param stdClass $schema
75		* @param Uri $uri
76		*
77		* @return stdClass
78		*/
79	299	private function doResolveReferences(stdClass $schema, Uri $uri)
80		{
81	299	if ($this->isLooping($schema, $this->resolvedSchemas)) {
82	20	return $schema;
83		}
84
85	299	$inScope = false;
86	299	if (property_exists($schema, 'id') && is_string($schema->id)) {
87	7	$this->resolver->enter(new Uri($schema->id));
88	7	$inScope = true;
89	7	}
90
91	299	if (property_exists($schema, '$ref')) {
92	22	$resolved = $this->resolver->resolve($schema);
93	22	$this->resolver->enter($resolved[0], $resolved[1]);
94	22	$schema = $this->doResolveReferences($resolved[1], $resolved[0]);
95	22	$this->resolver->leave();
96	22	} else {
97	299	foreach ($schema as $property => $value) {
98	299	if (is_object($value)) {
99	114	$schema->{$property} = $this->doResolveReferences($value, $uri);
100	299	} elseif (is_array($value)) {
101	75	foreach ($value as $index => $element) {
102	73	if (is_object($element)) {
103	44	$schema->{$property}[$index] = $this->doResolveReferences($element, $uri);
104	44	}
105	75	}
106	75	}
107	299	}
108		}
109
110	299	if ($inScope) {
111	7	$this->resolver->leave();
112	7	}
113
114	299	return $schema;
115		}
116
117		/**
118		* Recursively normalizes a given schema and validates its syntax.
119		*
120		* @param stdClass $schema
121		* @param Context $context
122		*
123		* @return stdClass
124		*/
125	357	public function parseSchema(stdClass $schema, Context $context)
126		{
127	357	if ($this->isLooping($schema, $this->parsedSchemas)) {
128	12	return $schema;
129		}
130
131	357	foreach ($this->getConstraints($schema, $context) as $constraint) {
132	357	foreach ($constraint->keywords() as $keyword) {
133	357	if (property_exists($schema, $keyword)) {
134	333	$constraint->normalize($schema, $context, $this);
135	333	break;
136		}
137	357	}
138	357	}
139
140	357	return $schema;
141		}
142
143		/**
144		* Validates an instance against a given schema, populating a context
145		* with encountered violations.
146		*
147		* @param $instance
148		* @param stdClass $schema
149		* @param Context $context
150		*/
151	348	public function applyConstraints($instance, stdClass $schema, Context $context)
152		{
153	348	$instanceType = Types::getPrimitiveTypeOf($instance);
154
155	348	foreach ($this->getConstraints($schema, $context) as $constraint) {
156	348	foreach ($constraint->keywords() as $keyword) {
157	348	if ($constraint->supports($instanceType)) {
158	348	if (property_exists($schema, $keyword)) {
159	307	$constraint->apply($instance, $schema, $context, $this);
160	307	break;
161		}
162	348	}
163	348	}
164	348	}
165	348	}
166
167	363	private function isLooping($item, array &$stack)
168		{
169	363	$isKnown = false;
170
171	363	foreach ($stack as $knownItem) {
172	202	if ($item === $knownItem) {
173	20	$isKnown = true;
174	20	break;
175		}
176	363	}
177
178	363	if (!$isKnown) {
179	363	$stack[] = $item;
180	363	}
181
182	363	return $isKnown;
183		}
184
185	357	private function getConstraints(stdClass $schema, Context $context)
186		{
187	357	if (property_exists($schema, '$schema')) {
188	4	$context->setVersion($schema->{'$schema'});
189	4	}
190
191	357	return $this->registry->getConstraints($context->getVersion());
192		}
193		}
194

stefk / JVal

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Walker::resolveReferences() A

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