LaravelExpressionProvider::prepareBinaryExpression() - Code Metrics - Inspection of "Unpack expressionType before use in expression pro..." - Algo-Web/POData-Laravel - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#122)

by Alex

created 2017-09-29 08:42 UTC

prepareBinaryExpression() A

↳ Parent: LaravelExpressionProvider

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

Metric	Value
c	0
b	0
f	0
dl	0
loc	4
ccs	0
cts	0
cp	0
rs	10
cc	1
eloc	2
nc	1
nop	3
crap	2

<?php

namespace AlgoWeb\PODataLaravel\Query;

use POData\Common\ODataConstants;
use POData\Providers\Expression\IExpressionProvider;
use POData\Providers\Metadata\ResourceType;
use POData\Providers\Metadata\Type\IType;
use POData\UriProcessor\QueryProcessor\ExpressionParser\Expressions\ExpressionType;
use POData\UriProcessor\QueryProcessor\ExpressionParser\Expressions\PropertyAccessExpression;

class LaravelExpressionProvider implements IExpressionProvider
{
    const ADD = '+';
    const CLOSE_BRACKET = ')';
    const COMMA = ',';
    const DIVIDE = '/';
    const SUBTRACT = '-';
    const EQUAL = '==';
    const GREATER_THAN = '>';
    const GREATER_THAN_OR_EQUAL = '>=';
    const LESS_THAN = '<';
    const LESS_THAN_OR_EQUAL = '<=';
    const LOGICAL_AND = '&&';
    const LOGICAL_NOT = '!';
    const LOGICAL_OR = '||';
    const MEMBER_ACCESS = '->';
    const MODULO = '%';
    const MULTIPLY = '*';
    const NEGATE = '-';
    const NOT_EQUAL = '!=';
    const OPEN_BRACKET = '(';
    const TYPE_NAMESPACE = 'POData\\Providers\\Metadata\\Type\\';

    private $functionDescriptionParsers;

    /**
     * The name of iterator.
     *
     * @var string
     */
    private $iteratorName;
    /**
     * The type of the resource pointed by the resource path segment.
     *
     * @var ResourceType
     */
    private $resourceType;

    public function __construct()
    {
        $this->functionDescriptionParsers[ODataConstants::STRFUN_COMPARE] = function ($params) {
            return 'strcmp(' . $params[0] . ', ' . $params[1] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_ENDSWITH] = function ($params) {
            return '(strcmp(substr(' . $params[0] . ', strlen(' . $params[0] . ') - strlen(' . $params[1] . ')), '
                   .$params[1] . ') === 0)';
        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_INDEXOF] = function ($params) {
            return 'strpos(' . $params[0] . ', ' . $params[1] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_REPLACE] = function ($params) {
            return 'str_replace(' . $params[1] . ', ' . $params[2] . ', ' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_STARTSWITH] = function ($params) {
            return '(strpos(' . $params[0] . ', ' . $params[1] . ') === 0)';
        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_TOLOWER] = function ($params) {
            return 'strtolower(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_TOUPPER] = function ($params) {
            return 'strtoupper(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_TRIM] = function ($params) {
            return 'trim(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_SUBSTRING] = function ($params) {
            return count($params) == 3 ?
                'substr(' . $params[0] . ', ' . $params[1] . ', ' . $params[2] . ')' : 'substr(' . $params[0] . ', ' . $params[1] . ')';

        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_SUBSTRINGOF] = function ($params) {
            return '(strpos(' . $params[1] . ', ' . $params[0] . ') !== false)';
        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_CONCAT] = function ($params) {
            return $params[0] . ' . ' . $params[1];
        };
        $this->functionDescriptionParsers[ODataConstants::STRFUN_LENGTH] = function ($params) {
            return 'strlen(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::GUIDFUN_EQUAL] = function ($params) {
            return self::TYPE_NAMESPACE . 'Guid::guidEqual(' . $params[0] . ', ' . $params[1] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::DATETIME_COMPARE] = function ($params) {
            return self::TYPE_NAMESPACE . 'DateTime::dateTimeCmp(' . $params[0] . ', ' . $params[1] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::DATETIME_YEAR] = function ($params) {
            return self::TYPE_NAMESPACE . 'DateTime::year(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::DATETIME_MONTH] = function ($params) {
            return self::TYPE_NAMESPACE . 'DateTime::month(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::DATETIME_DAY] = function ($params) {
            return self::TYPE_NAMESPACE . 'DateTime::day(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::DATETIME_HOUR] = function ($params) {
            return self::TYPE_NAMESPACE . 'DateTime::hour(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::DATETIME_MINUTE] = function ($params) {
            return self::TYPE_NAMESPACE . 'DateTime::minute(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::DATETIME_SECOND] = function ($params) {
            return self::TYPE_NAMESPACE . 'DateTime::second(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::MATHFUN_ROUND] = function ($params) {
            return 'round(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::MATHFUN_CEILING] = function ($params) {
            return 'ceil(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::MATHFUN_FLOOR] = function ($params) {
            return 'floor(' . $params[0] . ')';
        };
        $this->functionDescriptionParsers[ODataConstants::BINFUL_EQUAL] = function ($params) {
            return self::TYPE_NAMESPACE . 'Binary::binaryEqual(' . $params[0] . ', ' . $params[1] . ')';
        };
        $this->functionDescriptionParsers['is_null'] = function ($params) {
            return 'is_null(' . $params[0] . ')';
        };
    }
    /**
     * Get the name of the iterator.
     *
     * @return string
     */
    public function getIteratorName()
    {
        return $this->iteratorName;
    }

    /**
     * Get the resource type.
     *
     * @return object|null
     */
    public function getResourceType()
    {
        return $this->resourceType;
    }

    /**
     * call-back for setting the resource type.
     *
     * @param ResourceType $resourceType The resource type on which the filter
     *                                   is going to be applied
     */
    public function setResourceType(ResourceType $resourceType)
    {
        $this->iteratorName = '$' . $resourceType->getName();
        $this->resourceType = $resourceType;
    }
    /**
     * Call-back for logical expression.
     *
     * @param ExpressionType $expressionType The type of logical expression
     * @param string         $left           The left expression
     * @param string         $right          The left expression
     *
     * @return string
     */
    public function onLogicalExpression($expressionType, $left, $right)
    {
        $type = $this->unpackExpressionType($expressionType);
        switch ($type) {
            case ExpressionType::AND_LOGICAL:
                return $this->prepareBinaryExpression(self::LOGICAL_AND, $left, $right);
            case ExpressionType::OR_LOGICAL:
                return $this->prepareBinaryExpression(self::LOGICAL_OR, $left, $right);
            default:
                throw new \InvalidArgumentException('onLogicalExpression');
        }
    }
    /**
     * Call-back for arithmetic expression.
     *
     * @param ExpressionType $expressionType The type of arithmetic expression
     * @param string         $left           The left expression
     * @param string         $right          The left expression
     *
     * @return string
     */
    public function onArithmeticExpression($expressionType, $left, $right)
    {
        $type = $this->unpackExpressionType($expressionType);
        switch ($type) {
            case ExpressionType::MULTIPLY:
                return $this->prepareBinaryExpression(self::MULTIPLY, $left, $right);
            case ExpressionType::DIVIDE:
                return $this->prepareBinaryExpression(self::DIVIDE, $left, $right);
            case ExpressionType::MODULO:
                return $this->prepareBinaryExpression(self::MODULO, $left, $right);
            case ExpressionType::ADD:
                return $this->prepareBinaryExpression(self::ADD, $left, $right);
            case ExpressionType::SUBTRACT:
                return $this->prepareBinaryExpression(self::SUBTRACT, $left, $right);
            default:
                throw new \InvalidArgumentException('onArithmeticExpression');
        }
    }
    /**
     * Call-back for relational expression.
     *
     * @param ExpressionType $expressionType The type of relation expression
     * @param string         $left           The left expression
     * @param string         $right          The left expression
     *
     * @return string
     */
    public function onRelationalExpression($expressionType, $left, $right)
    {
        $type = $this->unpackExpressionType($expressionType);
        switch ($type) {
            case ExpressionType::GREATERTHAN:
                return $this->prepareBinaryExpression(self::GREATER_THAN, $left, $right);
            case ExpressionType::GREATERTHAN_OR_EQUAL:
                return $this->prepareBinaryExpression(self::GREATER_THAN_OR_EQUAL, $left, $right);
            case ExpressionType::LESSTHAN:
                return $this->prepareBinaryExpression(self::LESS_THAN, $left, $right);
            case ExpressionType::LESSTHAN_OR_EQUAL:
                return $this->prepareBinaryExpression(self::LESS_THAN_OR_EQUAL, $left, $right);
            case ExpressionType::EQUAL:
                return $this->prepareBinaryExpression(self::EQUAL, $left, $right);
            case ExpressionType::NOTEQUAL:
                return $this->prepareBinaryExpression(self::NOT_EQUAL, $left, $right);
            default:
                throw new \InvalidArgumentException('onRelationalExpression');
        }
    }
    /**
     * Call-back for unary expression.
     *
     * @param ExpressionType $expressionType The type of unary expression
     * @param string         $child          The child expression
     *
     * @return string
     */
    public function onUnaryExpression($expressionType, $child)
    {
        $type = $this->unpackExpressionType($expressionType);
        switch ($type) {
            case ExpressionType::NEGATE:
                return $this->prepareUnaryExpression(self::NEGATE, $child);
            case ExpressionType::NOT_LOGICAL:
                return $this->prepareUnaryExpression(self::LOGICAL_NOT, $child);
            default:
                throw new \InvalidArgumentException('onUnaryExpression');
        }
    }
    /**
     * Call-back for constant expression.
     *
     * @param IType $type  The type of constant
     * @param mixed $value The value of the constant
     *
     * @return string

     */
    public function onConstantExpression(IType $type, $value)
    {
        if (is_bool($value)) {
            return var_export($value, true);
        } elseif (null === $value) {
            return var_export(null, true);
        }
        return $value;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }
    /**
     * Call-back for property access expression.
     *
     * @param PropertyAccessExpression $expression The property access expression
     *
     * @return string
     */
    public function onPropertyAccessExpression($expression)
    {
        $parent = $expression;
        $variable = null;
        do {
            $variable = $parent->getResourceProperty()->getName() . self::MEMBER_ACCESS . $variable;
            $parent = $parent->getParent();
        } while ($parent != null);
        $variable = rtrim($variable, self::MEMBER_ACCESS);
        $variable = $this->getIteratorName() . self::MEMBER_ACCESS . $variable;
        return $variable;
    }
    /**
     * Call-back for function call expression.
     *
     * @param \POData\UriProcessor\QueryProcessor\FunctionDescription $functionDescription Description of the function
     * @param array<string>                                           $params              Parameters to the function
     *
     * @return string
     */
    public function onFunctionCallExpression($functionDescription, $params)
    {
        if (!isset($functionDescription)) {
            throw new \InvalidArgumentException('onFunctionCallExpression');
        }
        if (!array_key_exists($functionDescription->name, $this->functionDescriptionParsers)) {
            throw new \InvalidArgumentException('onFunctionCallExpression');
        }
        return $this->functionDescriptionParsers[$functionDescription->name]($params);
    }
    /**
     * To format binary expression.
     *
     * @param string $operator The binary operator
     * @param string $left     The left operand
     * @param string $right    The right operand
     *
     * @return string
     */
    private function prepareBinaryExpression($operator, $left, $right)
    {
        return self::OPEN_BRACKET . $left . ' ' . $operator . ' ' . $right . self::CLOSE_BRACKET;
    }
    /**
     * To format unary expression.
     *
     * @param string $operator The unary operator
     * @param string $child    The operand
     *
     * @return string
     */
    private function prepareUnaryExpression($operator, $child)
    {
        return $operator . self::OPEN_BRACKET . $child . self::CLOSE_BRACKET;
    }

    /**
     * @param $expressionType
     * @return mixed
     */
    private function unpackExpressionType($expressionType)
    {
        if ($expressionType instanceof ExpressionType) {
            $type = $expressionType->getValue();
        } else {
            $type = $expressionType;
        }
        return $type;
    }
}


1			<?php
2
3			namespace AlgoWeb\PODataLaravel\Query;
4
5			use POData\Common\ODataConstants;
6			use POData\Providers\Expression\IExpressionProvider;
7			use POData\Providers\Metadata\ResourceType;
8			use POData\Providers\Metadata\Type\IType;
9			use POData\UriProcessor\QueryProcessor\ExpressionParser\Expressions\ExpressionType;
10			use POData\UriProcessor\QueryProcessor\ExpressionParser\Expressions\PropertyAccessExpression;
11
12			class LaravelExpressionProvider implements IExpressionProvider
13			{
14			const ADD = '+';
15			const CLOSE_BRACKET = ')';
16			const COMMA = ',';
17			const DIVIDE = '/';
18			const SUBTRACT = '-';
19			const EQUAL = '==';
20			const GREATER_THAN = '>';
21			const GREATER_THAN_OR_EQUAL = '>=';
22			const LESS_THAN = '<';
23			const LESS_THAN_OR_EQUAL = '<=';
24			const LOGICAL_AND = '&&';
25			const LOGICAL_NOT = '!';
26			const LOGICAL_OR = '\|\|';
27			const MEMBER_ACCESS = '->';
28			const MODULO = '%';
29			const MULTIPLY = '*';
30			const NEGATE = '-';
31			const NOT_EQUAL = '!=';
32			const OPEN_BRACKET = '(';
33			const TYPE_NAMESPACE = 'POData\\Providers\\Metadata\\Type\\';
34
35			private $functionDescriptionParsers;
36
37			/**
38			* The name of iterator.
39			*
40			* @var string
41			*/
42			private $iteratorName;
43			/**
44			* The type of the resource pointed by the resource path segment.
45			*
46			* @var ResourceType
47			*/
48			private $resourceType;
49	52
50			public function __construct()
51	52		{
52			$this->functionDescriptionParsers[ODataConstants::STRFUN_COMPARE] = function ($params) {
53			return 'strcmp(' . $params[0] . ', ' . $params[1] . ')';
54			};
55			$this->functionDescriptionParsers[ODataConstants::STRFUN_ENDSWITH] = function ($params) {
56			return '(strcmp(substr(' . $params[0] . ', strlen(' . $params[0] . ') - strlen(' . $params[1] . ')), '
57	1		.$params[1] . ') === 0)';
58			};
59	1		$this->functionDescriptionParsers[ODataConstants::STRFUN_INDEXOF] = function ($params) {
60			return 'strpos(' . $params[0] . ', ' . $params[1] . ')';
61			};
62		View Code Duplication	$this->functionDescriptionParsers[ODataConstants::STRFUN_REPLACE] = function ($params) {
63			return 'str_replace(' . $params[1] . ', ' . $params[2] . ', ' . $params[0] . ')';
64			};
65			$this->functionDescriptionParsers[ODataConstants::STRFUN_STARTSWITH] = function ($params) {
66			return '(strpos(' . $params[0] . ', ' . $params[1] . ') === 0)';
67	1		};
68			$this->functionDescriptionParsers[ODataConstants::STRFUN_TOLOWER] = function ($params) {
69	1		return 'strtolower(' . $params[0] . ')';
70	1		};
71	1		$this->functionDescriptionParsers[ODataConstants::STRFUN_TOUPPER] = function ($params) {
72			return 'strtoupper(' . $params[0] . ')';
73			};
74			$this->functionDescriptionParsers[ODataConstants::STRFUN_TRIM] = function ($params) {
75			return 'trim(' . $params[0] . ')';
76			};
77			$this->functionDescriptionParsers[ODataConstants::STRFUN_SUBSTRING] = function ($params) {
78			return count($params) == 3 ?
79			'substr(' . $params[0] . ', ' . $params[1] . ', ' . $params[2] . ')' : 'substr(' . $params[0] . ', ' . $params[1] . ')';
			0 ignored issues – show Coding Style introduced 2017-09-24 07:48 UTC by Report Bug Copy Issue Report This line exceeds maximum limit of 120 characters; contains 136 characters Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line. Loading history...
80			};
81	3		$this->functionDescriptionParsers[ODataConstants::STRFUN_SUBSTRINGOF] = function ($params) {
82			return '(strpos(' . $params[1] . ', ' . $params[0] . ') !== false)';
83			};
84	3		$this->functionDescriptionParsers[ODataConstants::STRFUN_CONCAT] = function ($params) {
85	1		return $params[0] . ' . ' . $params[1];
86	2		};
87	1		$this->functionDescriptionParsers[ODataConstants::STRFUN_LENGTH] = function ($params) {
88	1		return 'strlen(' . $params[0] . ')';
89	1		};
90	1	View Code Duplication	$this->functionDescriptionParsers[ODataConstants::GUIDFUN_EQUAL] = function ($params) {
91			return self::TYPE_NAMESPACE . 'Guid::guidEqual(' . $params[0] . ', ' . $params[1] . ')';
92			};
93		View Code Duplication	$this->functionDescriptionParsers[ODataConstants::DATETIME_COMPARE] = function ($params) {
94			return self::TYPE_NAMESPACE . 'DateTime::dateTimeCmp(' . $params[0] . ', ' . $params[1] . ')';
95			};
96			$this->functionDescriptionParsers[ODataConstants::DATETIME_YEAR] = function ($params) {
97			return self::TYPE_NAMESPACE . 'DateTime::year(' . $params[0] . ')';
98			};
99			$this->functionDescriptionParsers[ODataConstants::DATETIME_MONTH] = function ($params) {
100			return self::TYPE_NAMESPACE . 'DateTime::month(' . $params[0] . ')';
101	6		};
102			$this->functionDescriptionParsers[ODataConstants::DATETIME_DAY] = function ($params) {
103			return self::TYPE_NAMESPACE . 'DateTime::day(' . $params[0] . ')';
104	6		};
105	1		$this->functionDescriptionParsers[ODataConstants::DATETIME_HOUR] = function ($params) {
106	5		return self::TYPE_NAMESPACE . 'DateTime::hour(' . $params[0] . ')';
107	1		};
108	4		$this->functionDescriptionParsers[ODataConstants::DATETIME_MINUTE] = function ($params) {
109	1		return self::TYPE_NAMESPACE . 'DateTime::minute(' . $params[0] . ')';
110	3		};
111	1		$this->functionDescriptionParsers[ODataConstants::DATETIME_SECOND] = function ($params) {
112	2		return self::TYPE_NAMESPACE . 'DateTime::second(' . $params[0] . ')';
113	1		};
114	1		$this->functionDescriptionParsers[ODataConstants::MATHFUN_ROUND] = function ($params) {
115	1		return 'round(' . $params[0] . ')';
116	1		};
117			$this->functionDescriptionParsers[ODataConstants::MATHFUN_CEILING] = function ($params) {
118			return 'ceil(' . $params[0] . ')';
119			};
120			$this->functionDescriptionParsers[ODataConstants::MATHFUN_FLOOR] = function ($params) {
121			return 'floor(' . $params[0] . ')';
122			};
123		View Code Duplication	$this->functionDescriptionParsers[ODataConstants::BINFUL_EQUAL] = function ($params) {
124			return self::TYPE_NAMESPACE . 'Binary::binaryEqual(' . $params[0] . ', ' . $params[1] . ')';
125			};
126			$this->functionDescriptionParsers['is_null'] = function ($params) {
127	7		return 'is_null(' . $params[0] . ')';
128			};
129			}
130	7		/**
131	1		* Get the name of the iterator.
132	6		*
133	1		* @return string
134	5		*/
135	1		public function getIteratorName()
136	4		{
137	1		return $this->iteratorName;
138	3		}
139	1
140	2		/**
141	1		* Get the resource type.
142	1		*
143	1		* @return object\|null
144	1		*/
145			public function getResourceType()
146			{
147			return $this->resourceType;
148			}
149
150			/**
151			* call-back for setting the resource type.
152			*
153			* @param ResourceType $resourceType The resource type on which the filter
154	3		* is going to be applied
155			*/
156			public function setResourceType(ResourceType $resourceType)
157	3		{
158	1		$this->iteratorName = '$' . $resourceType->getName();
159	2		$this->resourceType = $resourceType;
160	1		}
161	1		/**
162	1		* Call-back for logical expression.
163	1		*
164			* @param ExpressionType $expressionType The type of logical expression
165			* @param string $left The left expression
166			* @param string $right The left expression
167			*
168			* @return string
169			*/
170		View Code Duplication	public function onLogicalExpression($expressionType, $left, $right)
171			{
172			$type = $this->unpackExpressionType($expressionType);
173	8		switch ($type) {
174			case ExpressionType::AND_LOGICAL:
175	8		return $this->prepareBinaryExpression(self::LOGICAL_AND, $left, $right);
176	2		case ExpressionType::OR_LOGICAL:
177	6		return $this->prepareBinaryExpression(self::LOGICAL_OR, $left, $right);
178	1		default:
179			throw new \InvalidArgumentException('onLogicalExpression');
180	5		}
181			}
182			/**
183			* Call-back for arithmetic expression.
184			*
185			* @param ExpressionType $expressionType The type of arithmetic expression
186			* @param string $left The left expression
187			* @param string $right The left expression
188			*
189	1		* @return string
190			*/
191	1		public function onArithmeticExpression($expressionType, $left, $right)
192	1		{
193			$type = $this->unpackExpressionType($expressionType);
194	1		switch ($type) {
195	1		case ExpressionType::MULTIPLY:
196	1		return $this->prepareBinaryExpression(self::MULTIPLY, $left, $right);
197	1		case ExpressionType::DIVIDE:
198	1		return $this->prepareBinaryExpression(self::DIVIDE, $left, $right);
199	1		case ExpressionType::MODULO:
200			return $this->prepareBinaryExpression(self::MODULO, $left, $right);
201			case ExpressionType::ADD:
202			return $this->prepareBinaryExpression(self::ADD, $left, $right);
203			case ExpressionType::SUBTRACT:
204			return $this->prepareBinaryExpression(self::SUBTRACT, $left, $right);
205			default:
206			throw new \InvalidArgumentException('onArithmeticExpression');
207			}
208			}
209	28		/**
210			* Call-back for relational expression.
211	28		*
212	1		* @param ExpressionType $expressionType The type of relation expression
213			* @param string $left The left expression
214	27		* @param string $right The left expression
215	27		*
216	1		* @return string
217	26		*/
218	1		public function onRelationalExpression($expressionType, $left, $right)
219	25		{
220	1		$type = $this->unpackExpressionType($expressionType);
221	24		switch ($type) {
222	1		case ExpressionType::GREATERTHAN:
223	23		return $this->prepareBinaryExpression(self::GREATER_THAN, $left, $right);
224	1		case ExpressionType::GREATERTHAN_OR_EQUAL:
225	22		return $this->prepareBinaryExpression(self::GREATER_THAN_OR_EQUAL, $left, $right);
226	1		case ExpressionType::LESSTHAN:
227	21		return $this->prepareBinaryExpression(self::LESS_THAN, $left, $right);
228	1		case ExpressionType::LESSTHAN_OR_EQUAL:
229	20		return $this->prepareBinaryExpression(self::LESS_THAN_OR_EQUAL, $left, $right);
230	1		case ExpressionType::EQUAL:
231	19		return $this->prepareBinaryExpression(self::EQUAL, $left, $right);
232	2		case ExpressionType::NOTEQUAL:
233	2		return $this->prepareBinaryExpression(self::NOT_EQUAL, $left, $right);
234	17		default:
235	1		throw new \InvalidArgumentException('onRelationalExpression');
236	16		}
237	1		}
238	15		/**
239	1		* Call-back for unary expression.
240	14		*
241	1		* @param ExpressionType $expressionType The type of unary expression
242	13		* @param string $child The child expression
243	1		*
244	12		* @return string
245	1		*/
246	11	View Code Duplication	public function onUnaryExpression($expressionType, $child)
247	1		{
248	10		$type = $this->unpackExpressionType($expressionType);
249	1		switch ($type) {
250	9		case ExpressionType::NEGATE:
251	1		return $this->prepareUnaryExpression(self::NEGATE, $child);
252	8		case ExpressionType::NOT_LOGICAL:
253	1		return $this->prepareUnaryExpression(self::LOGICAL_NOT, $child);
254	7		default:
255	1		throw new \InvalidArgumentException('onUnaryExpression');
256	6		}
257	1		}
258	5		/**
259	1		* Call-back for constant expression.
260	4		*
261	1		* @param IType $type The type of constant
262	3		* @param mixed $value The value of the constant
263	1		*
264	2		* @return string
			0 ignored issues – show Documentation introduced 2017-07-22 09:34 UTC by Report Bug Copy Issue Report Should the return type not be `string\|object\|integer\|double\|array`? Also, consider making the array more specific, something like `array<String>`, or `String[]`. This check compares the return type specified in the `@return` annotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch. If the return type contains the type array, this check recommends the use of a more specific type like `String[]` or `array<String>`. Loading history...
265	1		*/
266	1		public function onConstantExpression(IType $type, $value)
267	1		{
268	1		if (is_bool($value)) {
269			return var_export($value, true);
270			} elseif (null === $value) {
271			return var_export(null, true);
272			}
273			return $value;
			0 ignored issues – show Bug Best Practice introduced 2016-11-01 11:02 UTC by Report Bug Copy Issue Report The return type of `return $value;` (`object\|integer\|double\|string\|array`) is incompatible with the return type declared by the interface `POData\Providers\Express...r::onConstantExpression` of type `string`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
274			}
275			/**
276			* Call-back for property access expression.
277			*
278			* @param PropertyAccessExpression $expression The property access expression
279	13		*
280			* @return string
281			*/
282	13		public function onPropertyAccessExpression($expression)
283			{
284			$parent = $expression;
285			$variable = null;
286			do {
287			$variable = $parent->getResourceProperty()->getName() . self::MEMBER_ACCESS . $variable;
288			$parent = $parent->getParent();
289			} while ($parent != null);
290			$variable = rtrim($variable, self::MEMBER_ACCESS);
291			$variable = $this->getIteratorName() . self::MEMBER_ACCESS . $variable;
292	2		return $variable;
293			}
294	2		/**
295			* Call-back for function call expression.
296			*
297			* @param \POData\UriProcessor\QueryProcessor\FunctionDescription $functionDescription Description of the function
298			* @param array<string> $params Parameters to the function
299			*
300			* @return string
301			*/
302			public function onFunctionCallExpression($functionDescription, $params)
303			{
304			if (!isset($functionDescription)) {
305			throw new \InvalidArgumentException('onFunctionCallExpression');
306			}
307			if (!array_key_exists($functionDescription->name, $this->functionDescriptionParsers)) {
308			throw new \InvalidArgumentException('onFunctionCallExpression');
309			}
310			return $this->functionDescriptionParsers[$functionDescription->name]($params);
311			}
312			/**
313			* To format binary expression.
314			*
315			* @param string $operator The binary operator
316			* @param string $left The left operand
317			* @param string $right The right operand
318			*
319			* @return string
320			*/
321			private function prepareBinaryExpression($operator, $left, $right)
322			{
323			return self::OPEN_BRACKET . $left . ' ' . $operator . ' ' . $right . self::CLOSE_BRACKET;
324			}
325			/**
326			* To format unary expression.
327			*
328			* @param string $operator The unary operator
329			* @param string $child The operand
330			*
331			* @return string
332			*/
333			private function prepareUnaryExpression($operator, $child)
334			{
335			return $operator . self::OPEN_BRACKET . $child . self::CLOSE_BRACKET;
336			}
337
338			/**
339			* @param $expressionType
340			* @return mixed
341			*/
342			private function unpackExpressionType($expressionType)
343			{
344			if ($expressionType instanceof ExpressionType) {
345			$type = $expressionType->getValue();
346			} else {
347			$type = $expressionType;
348			}
349			return $type;
350			}
351			}
352

Algo-Web / POData-Laravel

Pull Request — master (#122)

prepareBinaryExpression() A

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