Calculator::calculate() - Code Metrics - platine-php/expression - Measure and Improve Code Quality continuously with Scrutinizer

Calculator::calculate() C
last analyzed 2025-05-19 09:22 UTC

↳ Parent: Calculator

Complexity

Conditions	12
Paths	17

Size

Total Lines	51
Code Lines	34

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	34
c	1
b	0
f	0
dl	0
loc	51
rs	6.9666
cc	12
nc	17
nop	3

How to fix Long Method Complexity

<?php

/**
 * Platine Expression
 *
 * Platine Expression is an expression parser, evaluator with support of custom
 * operators and functions
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2020 Platine Expression
 * Copyright (c) Alexander Kiryukhin
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/**
 * @file Calculator.php
 *
 * The Calculator class
 *
 *  @package    Platine\Expression
 *  @author Platine Developers Team
 *  @copyright  Copyright (c) 2020
 *  @license    http://opensource.org/licenses/MIT  MIT License
 *  @link   https://www.platine-php.com
 *  @version 1.0.0
 *  @filesource
 */
declare(strict_types=1);

namespace Platine\Expression;

use Platine\Expression\Exception\IncorrectExpressionException;
use Platine\Expression\Exception\UnknownFunctionException;
use Platine\Expression\Exception\UnknownOperatorException;
use Platine\Expression\Exception\UnknownVariableException;
use Platine\Expression\Token;

/**
 * @class Calculator
 * @package Platine\Expression
 */
class Calculator
{
    /**
     * Create new instance
     * @param array<string, CustomFunction> $functions
     * @param array<string, Operator> $operators
     */
    public function __construct(protected array $functions, protected array $operators)
    {
    }

    /**
     * Calculate array of tokens in reverse polish notation
     * @param Token[] $tokens
     * @param array<string, float|string> $variables
     * @param callable|null $variableNotFoundHandler
     * @return mixed
     */
    public function calculate(
        array $tokens,
        array $variables,
        ?callable $variableNotFoundHandler = null
    ): mixed {
        /** @var Token[] $stack */
        $stack = [];
        foreach ($tokens as $token) {
            if (in_array($token->getType(), [Token::LITERAL, Token::STRING])) {
                $stack[] = $token;
            } elseif (Token::VARIABLE === $token->getType()) {
                $variable = $token->getValue();
                $value = null;
                if (array_key_exists($variable, $variables)) {
                    $value = $variables[$variable];
                } elseif ($variableNotFoundHandler !== null) {
                    $value = call_user_func($variableNotFoundHandler, $variable);
                } else {
                    throw new UnknownVariableException(sprintf(
                        'Unknown variable [%s]',
                        $variable
                    ));
                }
                $stack[] = new Token(Token::LITERAL, $value, $variable);
            } elseif (Token::FUNCTION === $token->getType()) {
                if (! array_key_exists($token->getValue(), $this->functions)) {
                    throw new UnknownFunctionException(sprintf(
                        'Unknown function [%s]',
                        $token->getValue()
                    ));
                }
                $stack[] = $this->functions[$token->getValue()]->execute(
                    $stack,
                    $token->getParamCount()
                );
            } elseif (Token::OPERATOR === $token->getType()) {
                if (! array_key_exists($token->getValue(), $this->operators)) {
                    throw new UnknownOperatorException(sprintf(
                        'Unknown operator [%s]',
                        $token->getValue()
                    ));
                }
                $stack[] = $this->operators[$token->getValue()]->execute($stack);
            }
        }
        $result = array_pop($stack);
        if ($result === null || count($stack) > 0) {
            throw new IncorrectExpressionException('Expression stack is not empty');
        }

        return $result->getValue();
    }

    /**
     * Return the list of functions
     * @return array<string, CustomFunction>
     */
    public function getFunctions(): array
    {
        return $this->functions;
    }

    /**
     * Return the list of operators
     * @return array<string, Operator>
     */
    public function getOperators(): array
    {
        return $this->operators;
    }
}


1			<?php
2
3			/**
4			* Platine Expression
5			*
6			* Platine Expression is an expression parser, evaluator with support of custom
7			* operators and functions
8			*
9			* This content is released under the MIT License (MIT)
10			*
11			* Copyright (c) 2020 Platine Expression
12			* Copyright (c) Alexander Kiryukhin
13			*
14			* Permission is hereby granted, free of charge, to any person obtaining a copy
15			* of this software and associated documentation files (the "Software"), to deal
16			* in the Software without restriction, including without limitation the rights
17			* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
18			* copies of the Software, and to permit persons to whom the Software is
19			* furnished to do so, subject to the following conditions:
20			*
21			* The above copyright notice and this permission notice shall be included in all
22			* copies or substantial portions of the Software.
23			*
24			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25			* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26			* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
27			* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28			* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
29			* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30			* SOFTWARE.
31			*/
32
33			/**
34			* @file Calculator.php
35			*
36			* The Calculator class
37			*
38			* @package Platine\Expression
39			* @author Platine Developers Team
40			* @copyright Copyright (c) 2020
41			* @license http://opensource.org/licenses/MIT MIT License
42			* @link https://www.platine-php.com
43			* @version 1.0.0
44			* @filesource
45			*/
46			declare(strict_types=1);
47
48			namespace Platine\Expression;
49
50			use Platine\Expression\Exception\IncorrectExpressionException;
51			use Platine\Expression\Exception\UnknownFunctionException;
52			use Platine\Expression\Exception\UnknownOperatorException;
53			use Platine\Expression\Exception\UnknownVariableException;
54			use Platine\Expression\Token;
55
56			/**
57			* @class Calculator
58			* @package Platine\Expression
59			*/
60			class Calculator
61			{
62			/**
63			* Create new instance
64			* @param array<string, CustomFunction> $functions
65			* @param array<string, Operator> $operators
66			*/
67			public function __construct(protected array $functions, protected array $operators)
68			{
69			}
70
71			/**
72			* Calculate array of tokens in reverse polish notation
73			* @param Token[] $tokens
74			* @param array<string, float\|string> $variables
75			* @param callable\|null $variableNotFoundHandler
76			* @return mixed
77			*/
78			public function calculate(
79			array $tokens,
80			array $variables,
81			?callable $variableNotFoundHandler = null
82			): mixed {
83			/** @var Token[] $stack */
84			$stack = [];
85			foreach ($tokens as $token) {
86			if (in_array($token->getType(), [Token::LITERAL, Token::STRING])) {
87			$stack[] = $token;
88			} elseif (Token::VARIABLE === $token->getType()) {
89			$variable = $token->getValue();
90			$value = null;
91			if (array_key_exists($variable, $variables)) {
92			$value = $variables[$variable];
93			} elseif ($variableNotFoundHandler !== null) {
94			$value = call_user_func($variableNotFoundHandler, $variable);
95			} else {
96			throw new UnknownVariableException(sprintf(
97			'Unknown variable [%s]',
98			$variable
99			));
100			}
101			$stack[] = new Token(Token::LITERAL, $value, $variable);
102			} elseif (Token::FUNCTION === $token->getType()) {
103			if (! array_key_exists($token->getValue(), $this->functions)) {
104			throw new UnknownFunctionException(sprintf(
105			'Unknown function [%s]',
106			$token->getValue()
107			));
108			}
109			$stack[] = $this->functions[$token->getValue()]->execute(
110			$stack,
111			$token->getParamCount()
112			);
113			} elseif (Token::OPERATOR === $token->getType()) {
114			if (! array_key_exists($token->getValue(), $this->operators)) {
115			throw new UnknownOperatorException(sprintf(
116			'Unknown operator [%s]',
117			$token->getValue()
118			));
119			}
120			$stack[] = $this->operators[$token->getValue()]->execute($stack);
121			}
122			}
123			$result = array_pop($stack);
124			if ($result === null \|\| count($stack) > 0) {
125			throw new IncorrectExpressionException('Expression stack is not empty');
126			}
127
128			return $result->getValue();
129			}
130
131			/**
132			* Return the list of functions
133			* @return array<string, CustomFunction>
134			*/
135			public function getFunctions(): array
136			{
137			return $this->functions;
138			}
139
140			/**
141			* Return the list of operators
142			* @return array<string, Operator>
143			*/
144			public function getOperators(): array
145			{
146			return $this->operators;
147			}
148			}
149

platine-php / expression

Calculator::calculate() C last analyzed 2025-05-19 09:22 UTC

Complexity

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Duplication

Importance

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Calculator::calculate() C
last analyzed 2025-05-19 09:22 UTC