Invoker::invoke() - Code Metrics - Inspection of "Refactored Processor" - vaderangry/PhpJsonRpc - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 21563f...50178b )

by Denis

created 2016-12-02 12:48 UTC

Invoker::invoke() A

↳ Parent: Invoker

Complexity

Conditions	3
Paths	3

Size

Total Lines	20
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	20
rs	9.4285
c	0
b	0
f	0
cc	3
eloc	12
nc	3
nop	3

<?php

namespace PhpJsonRpc\Server;

use PhpJsonRpc\Error\InvalidParamsException;
use PhpJsonRpc\Error\ServerErrorException;

/**
 * Invoker of methods
 */
class Invoker
{
    /**
     * @param mixed  $object
     * @param string $method
     * @param array  $parameters
     *
     * @return mixed
     */
    public function invoke($object, string $method, array $parameters)
    {
        $handler    = $object;
        $reflection = new \ReflectionMethod($handler, $method);

        if ($reflection->getNumberOfRequiredParameters() > count($parameters)) {
            throw new InvalidParamsException('Expected ' . $reflection->getNumberOfRequiredParameters() . ' parameters');
        }

        $formalParameters = $reflection->getParameters();
        $actualParameters = $this->prepareActualParameters($formalParameters, $parameters);

        try {
            $result = $reflection->invokeArgs($handler, $actualParameters);
        } catch (\Exception $exception) {
            throw new ServerErrorException($exception->getMessage(), $exception->getCode());
        }

        return $result;
    }

    /**
     * @param \ReflectionParameter[] $formalParameters Formal parameters
     * @param array                  $parameters       Parameters from request (raw)
     *
     * @return array
     */
    private function prepareActualParameters(array $formalParameters, array $parameters): array
    {
        $result = [];

        // Handle named parameters
        if ($this->isNamedParameters($parameters)) {

            foreach ($formalParameters as $formalParameter) {
                /** @var \ReflectionParameter $formalParameter */

                $formalType = (string) $formalParameter->getType();
                $name       = $formalParameter->getName();


                if ($formalParameter->isOptional()) {
                    if (array_key_exists($name, $parameters)) {
                        $result[$name] = $this->matchType($formalType, $parameters[$name]);
                    } else {
                        continue;
                    }
                }

                if (!array_key_exists($name, $parameters)) {
                    throw new InvalidParamsException('Named parameter error');
                }

                $result[$name] = $this->matchType($formalType, $parameters[$name]);
            }

            return $result;
        }

        // Handle positional parameters
        for ($position = 0; $position < count($formalParameters); $position++) {
for ($i=0; $i<count($array); $i++) { // calls count() on each iteration
}

// Better
for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once
}
            /** @var \ReflectionParameter $formalParameter */
            $formalParameter = $formalParameters[$position];

            if ($formalParameter->isOptional() && !isset($parameters[$position])) {
                break;
            }

            if (!isset($parameters[$position])) {
                throw new InvalidParamsException('Positional parameter error');
            }

            $formalType = (string) $formalParameter->getType();
            $result[] = $this->matchType($formalType, $parameters[$position]);
        }

        return $result;
    }

    /**
     * @param array $rawParameters
     *
     * @return bool
     */
    private function isNamedParameters(array $rawParameters): bool
    {
        return array_keys($rawParameters) !== range(0, count($rawParameters) - 1);
    }

    /**
     * @param string $formalType
     * @param mixed  $value
     *
     * @return mixed
     */
    private function matchType($formalType, $value)
    {
        // Parameter without type-hinting returns as is
        if ($formalType === '') {
            return $value;
        }

        if ($this->isType($formalType, $value)) {
            return $value;
        }

        throw new InvalidParamsException('Match type failed');
    }

    /**
     * @param string $type
     * @param $value
     *
     * @return bool
     */
    private function isType(string $type, $value)
    {
        switch ($type) {
            case 'bool':
                return is_bool($value);

            case 'int':
                return is_int($value);

            case 'float':
                return is_float($value) || is_int($value);

            case 'string':
                return is_string($value);

            case 'array':
                return is_array($value);

            default:
                throw new InvalidParamsException('Type match error');
        }
    }
}


1			<?php
2
3			namespace PhpJsonRpc\Server;
4
5			use PhpJsonRpc\Error\InvalidParamsException;
6			use PhpJsonRpc\Error\ServerErrorException;
7
8			/**
9			* Invoker of methods
10			*/
11			class Invoker
12			{
13			/**
14			* @param mixed $object
15			* @param string $method
16			* @param array $parameters
17			*
18			* @return mixed
19			*/
20			public function invoke($object, string $method, array $parameters)
21			{
22			$handler = $object;
23			$reflection = new \ReflectionMethod($handler, $method);
24
25			if ($reflection->getNumberOfRequiredParameters() > count($parameters)) {
26			throw new InvalidParamsException('Expected ' . $reflection->getNumberOfRequiredParameters() . ' parameters');
27			}
28
29			$formalParameters = $reflection->getParameters();
30			$actualParameters = $this->prepareActualParameters($formalParameters, $parameters);
31
32			try {
33			$result = $reflection->invokeArgs($handler, $actualParameters);
34			} catch (\Exception $exception) {
35			throw new ServerErrorException($exception->getMessage(), $exception->getCode());
36			}
37
38			return $result;
39			}
40
41			/**
42			* @param \ReflectionParameter[] $formalParameters Formal parameters
43			* @param array $parameters Parameters from request (raw)
44			*
45			* @return array
46			*/
47			private function prepareActualParameters(array $formalParameters, array $parameters): array
48			{
49			$result = [];
50
51			// Handle named parameters
52			if ($this->isNamedParameters($parameters)) {
53
54			foreach ($formalParameters as $formalParameter) {
55			/** @var \ReflectionParameter $formalParameter */
56
57			$formalType = (string) $formalParameter->getType();
58			$name = $formalParameter->getName();
			0 ignored issues – show Bug introduced 2016-12-02 12:50 UTC by Report Bug Copy Issue Report Consider using `$formalParameter->name`. There is an issue with `getName()` and APC-enabled PHP versions. Loading history...
59
60			if ($formalParameter->isOptional()) {
61			if (array_key_exists($name, $parameters)) {
62			$result[$name] = $this->matchType($formalType, $parameters[$name]);
63			} else {
64			continue;
65			}
66			}
67
68			if (!array_key_exists($name, $parameters)) {
69			throw new InvalidParamsException('Named parameter error');
70			}
71
72			$result[$name] = $this->matchType($formalType, $parameters[$name]);
73			}
74
75			return $result;
76			}
77
78			// Handle positional parameters
79			for ($position = 0; $position < count($formalParameters); $position++) {
			0 ignored issues – show Performance Best Practice introduced 2016-11-28 12:47 UTC by Report Bug Copy Issue Report It seems like you are calling the size function `count()` as part of the test condition. You might want to compute the size beforehand, and not on each iteration. If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: for ($i=0; $i<count($array); $i++) { // calls count() on each iteration } // Better for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once } Loading history...
80			/** @var \ReflectionParameter $formalParameter */
81			$formalParameter = $formalParameters[$position];
82
83			if ($formalParameter->isOptional() && !isset($parameters[$position])) {
84			break;
85			}
86
87			if (!isset($parameters[$position])) {
88			throw new InvalidParamsException('Positional parameter error');
89			}
90
91			$formalType = (string) $formalParameter->getType();
92			$result[] = $this->matchType($formalType, $parameters[$position]);
93			}
94
95			return $result;
96			}
97
98			/**
99			* @param array $rawParameters
100			*
101			* @return bool
102			*/
103			private function isNamedParameters(array $rawParameters): bool
104			{
105			return array_keys($rawParameters) !== range(0, count($rawParameters) - 1);
106			}
107
108			/**
109			* @param string $formalType
110			* @param mixed $value
111			*
112			* @return mixed
113			*/
114			private function matchType($formalType, $value)
115			{
116			// Parameter without type-hinting returns as is
117			if ($formalType === '') {
118			return $value;
119			}
120
121			if ($this->isType($formalType, $value)) {
122			return $value;
123			}
124
125			throw new InvalidParamsException('Match type failed');
126			}
127
128			/**
129			* @param string $type
130			* @param $value
131			*
132			* @return bool
133			*/
134			private function isType(string $type, $value)
135			{
136			switch ($type) {
137			case 'bool':
138			return is_bool($value);
139
140			case 'int':
141			return is_int($value);
142
143			case 'float':
144			return is_float($value) \|\| is_int($value);
145
146			case 'string':
147			return is_string($value);
148
149			case 'array':
150			return is_array($value);
151
152			default:
153			throw new InvalidParamsException('Type match error');
154			}
155			}
156			}
157

vaderangry / PhpJsonRpc

Push — master ( 21563f...50178b )

Invoker::invoke() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like