NodeSearch::eachType() - Code Metrics - Inspection of "add spaceship operator" - JanPietrzyk/php-version-transpiler - Measure and Improve Code Quality continuously with Scrutinizer

Test Setup Failed

Push — master ( 1fc96a...b6ad37 )

by Jan Philipp

created 2016-05-22 16:05 UTC

NodeSearch::eachType() B

↳ Parent: NodeSearch

Complexity

Conditions	5
Paths	7

Size

Total Lines	20
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Metric	Value
dl	0
loc	20
rs	8.8571
cc	5
eloc	11
nc	7
nop	1

<?php


namespace JanPiet\PhpTranspiler;

use PhpParser\Node;

class NodeSearch
{
    /**
     * @var \PhpParser\Node[]
     */
    private $tree;

    /**
     * @var Node[]
     */
    private $allNodes;

    /**
     * @var Node[]
     */
    private $parentChain;

    /**
     * NodeSearch constructor.
     * @param Node[] $nodes
     */
    public function __construct(array $nodes)
    {
        $this->tree = $nodes;
    }

    /**
     * @param \string[] ...$classNames
     * @return \Traversable
     */
    public function eachType(string ...$classNames): \Traversable
    {
        $this->update();

        foreach ($this->allNodes as $node) {
            $found = false;
            foreach ($classNames as $className) {
                if ($node instanceof  $className) {
                    $found = true;
                    break;
                }
            }

            if (!$found) {
                continue;
            }

            yield $node;
        }
    }

    public function findParent(string $class, Node $fromNode)
    {
        $this->update();

        do {
            $nodeId = spl_object_hash($fromNode);
            $fromNode = $this->parentChain[$nodeId];
            
            if (null === $fromNode) {
                throw new ParentNotFoundException('Could not find the parent "' . $class . '" for node');
            }
        } while (!$fromNode instanceof $class);

        return $fromNode;
    }

    /**
     * @param Node $newClass
     */
    public function appendToRoot(Node $newClass)
    {
        $this->tree[] = $newClass;
    }

    /**
     * @return \PhpParser\Node[]
     */
    public function getTree()
    {
        return $this->tree;
    }

    private function update()
    {
        $allNodes = [];
        $parentChain = [];

        foreach ($this->recurse($this->tree) as $parent => $node) {
            $nodeId = spl_object_hash($node);
            $allNodes[$nodeId] = $node;
            $parentChain[$nodeId] = $parent;
        }

        $this->allNodes = $allNodes;
        $this->parentChain = $parentChain;
    }

    /**
     * @param Node[] $nodes
     * @return \Traversable
     */
    private function recurse(array $nodes, Node $parent = null): \Traversable
    {
        foreach ($nodes as $node) {
            if (is_array($node)) {
                yield from $this->recurse($node, $node);
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
            } elseif ($node instanceof Node) {
                yield $parent => $node;

                $subNodeNames = $node->getSubNodeNames();

                foreach ($subNodeNames as $subNodeName) {
                    $subNode = $node->{$subNodeName};

                    if (!is_array($subNode)) {
                        $subNode = [$subNode];
                    }

                    yield from $this->recurse($subNode, $node);
                }
            }
        }
    }

    /**
     * @param $sourceNode
     * @param $newNode
     */
    public function replaceNode($sourceNode, $newNode)
    {
        $this->update();

        $hash = spl_object_hash($sourceNode);

        if (array_key_exists($hash, $this->parentChain)) {
            $parents = [$this->parentChain[$hash]];
        } else {
            $parents = $this->tree;
        }

        foreach ($parents as $key => $parent) {
            if ($parent === $sourceNode) {
                $parent[$key] = $newNode;
                return;
            }

            foreach ($parent->getSubNodeNames() as $subNodeName) {
                $nodes = &$parent->{$subNodeName};

                if (!is_array($nodes)) {
                    if ($nodes === $sourceNode) {
                        $parent->{$subNodeName} = $newNode;
                        return;
                    }

                    continue;
                }

                $foundKey = false;
                foreach ($nodes as $key => $node) {
                    if ($node === $sourceNode) {
                        $foundKey = $key;
                    }
                }

                if (false !== $foundKey) {
                    $nodes[$foundKey] = $newNode;
                    return;
                }
            }
        }
        
        throw new NodeNotFoundException('Node not found, replace not possible');
    }
}


1			<?php
2
3
4			namespace JanPiet\PhpTranspiler;
5
6			use PhpParser\Node;
7
8			class NodeSearch
9			{
10			/**
11			* @var \PhpParser\Node[]
12			*/
13			private $tree;
14
15			/**
16			* @var Node[]
17			*/
18			private $allNodes;
19
20			/**
21			* @var Node[]
22			*/
23			private $parentChain;
24
25			/**
26			* NodeSearch constructor.
27			* @param Node[] $nodes
28			*/
29			public function __construct(array $nodes)
30			{
31			$this->tree = $nodes;
32			}
33
34			/**
35			* @param \string[] ...$classNames
36			* @return \Traversable
37			*/
38			public function eachType(string ...$classNames): \Traversable
39			{
40			$this->update();
41
42			foreach ($this->allNodes as $node) {
43			$found = false;
44			foreach ($classNames as $className) {
45			if ($node instanceof $className) {
46			$found = true;
47			break;
48			}
49			}
50
51			if (!$found) {
52			continue;
53			}
54
55			yield $node;
56			}
57			}
58
59			public function findParent(string $class, Node $fromNode)
60			{
61			$this->update();
62
63			do {
64			$nodeId = spl_object_hash($fromNode);
65			$fromNode = $this->parentChain[$nodeId];
66
67			if (null === $fromNode) {
68			throw new ParentNotFoundException('Could not find the parent "' . $class . '" for node');
69			}
70			} while (!$fromNode instanceof $class);
71
72			return $fromNode;
73			}
74
75			/**
76			* @param Node $newClass
77			*/
78			public function appendToRoot(Node $newClass)
79			{
80			$this->tree[] = $newClass;
81			}
82
83			/**
84			* @return \PhpParser\Node[]
85			*/
86			public function getTree()
87			{
88			return $this->tree;
89			}
90
91			private function update()
92			{
93			$allNodes = [];
94			$parentChain = [];
95
96			foreach ($this->recurse($this->tree) as $parent => $node) {
97			$nodeId = spl_object_hash($node);
98			$allNodes[$nodeId] = $node;
99			$parentChain[$nodeId] = $parent;
100			}
101
102			$this->allNodes = $allNodes;
103			$this->parentChain = $parentChain;
104			}
105
106			/**
107			* @param Node[] $nodes
108			* @return \Traversable
109			*/
110			private function recurse(array $nodes, Node $parent = null): \Traversable
111			{
112			foreach ($nodes as $node) {
113			if (is_array($node)) {
114			yield from $this->recurse($node, $node);
			0 ignored issues – show Documentation introduced 2016-05-22 15:13 UTC by Report Bug Copy Issue Report `$node` is of type `array`, but the function expects a `null\|object<PhpParser\Node>`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
115			} elseif ($node instanceof Node) {
116			yield $parent => $node;
117
118			$subNodeNames = $node->getSubNodeNames();
119
120			foreach ($subNodeNames as $subNodeName) {
121			$subNode = $node->{$subNodeName};
122
123			if (!is_array($subNode)) {
124			$subNode = [$subNode];
125			}
126
127			yield from $this->recurse($subNode, $node);
128			}
129			}
130			}
131			}
132
133			/**
134			* @param $sourceNode
135			* @param $newNode
136			*/
137			public function replaceNode($sourceNode, $newNode)
138			{
139			$this->update();
140
141			$hash = spl_object_hash($sourceNode);
142
143			if (array_key_exists($hash, $this->parentChain)) {
144			$parents = [$this->parentChain[$hash]];
145			} else {
146			$parents = $this->tree;
147			}
148
149			foreach ($parents as $key => $parent) {
150			if ($parent === $sourceNode) {
151			$parent[$key] = $newNode;
152			return;
153			}
154
155			foreach ($parent->getSubNodeNames() as $subNodeName) {
156			$nodes = &$parent->{$subNodeName};
157
158			if (!is_array($nodes)) {
159			if ($nodes === $sourceNode) {
160			$parent->{$subNodeName} = $newNode;
161			return;
162			}
163
164			continue;
165			}
166
167			$foundKey = false;
168			foreach ($nodes as $key => $node) {
169			if ($node === $sourceNode) {
170			$foundKey = $key;
171			}
172			}
173
174			if (false !== $foundKey) {
175			$nodes[$foundKey] = $newNode;
176			return;
177			}
178			}
179			}
180
181			throw new NodeNotFoundException('Node not found, replace not possible');
182			}
183			}
184

JanPietrzyk / php-version-transpiler

Push — master ( 1fc96a...b6ad37 )

NodeSearch::eachType() B

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