Interpreter::translateOperator() - Code Metrics - Inspection of "Added methodology to identify original value in da..." - netdudes/DataSourceryBundle - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#12)

unknown

created 2016-01-25 14:28 UTC

Interpreter::translateOperator() B

↳ Parent: Interpreter

Complexity

Conditions	6
Paths	8

Size

Total Lines	59
Code Lines	37

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	1

Metric	Value
c	2
b	0
f	1
dl	0
loc	59
rs	8.7117
cc	6
eloc	37
nc	8
nop	2

How to fix Long Method

<?php

namespace Netdudes\DataSourceryBundle\UQL;

use Netdudes\DataSourceryBundle\DataSource\Configuration\Field;
use Netdudes\DataSourceryBundle\DataSource\Configuration\FieldInterface;
use Netdudes\DataSourceryBundle\DataSource\DataSourceInterface;
use Netdudes\DataSourceryBundle\DataType\PercentDataType;
use Netdudes\DataSourceryBundle\Extension\UqlExtensionContainer;
use Netdudes\DataSourceryBundle\Query\Filter;
use Netdudes\DataSourceryBundle\Query\FilterCondition;
use Netdudes\DataSourceryBundle\Query\FilterConditionFactory;
use Netdudes\DataSourceryBundle\UQL\AST\ASTArray;
use Netdudes\DataSourceryBundle\UQL\AST\ASTAssertion;
use Netdudes\DataSourceryBundle\UQL\AST\ASTFunctionCall;
use Netdudes\DataSourceryBundle\UQL\AST\ASTGroup;
use Netdudes\DataSourceryBundle\UQL\Exception\UQLInterpreterException;

/**
 * Class Interpreter
 *
 * The Interpreter transforms the generic Abstract Syntax Tree into
 * the specific FilterDefinition elements.
 */
class Interpreter
{
    /**
     * @var UqlExtensionContainer
     */
    private $extensionContainer;

    /**
     * @var DataSourceInterface
     */
    private $dataSource;

    /**
     * @var array
     */
    private $dataSourceElements;

    /**
     * @var bool
     */
    private $caseSensitive;

    /**
     * @var FilterConditionFactory
     */
    private $filterConditionFactory;

    /**
     * Constructor needs the columns descriptor to figure out appropriate filtering methods
     * and translate identifiers.
     *
     * @param UqlExtensionContainer  $extensionContainer
     * @param DataSourceInterface    $dataSource
     * @param bool                   $caseSensitive
     * @param FilterConditionFactory $filterConditionFactory
     */
    public function __construct(
        UqlExtensionContainer $extensionContainer,
        DataSourceInterface $dataSource,
        FilterConditionFactory $filterConditionFactory,
        $caseSensitive = true
    ) {
        $this->extensionContainer = $extensionContainer;
        $this->dataSource = $dataSource;
        $this->caseSensitive = $caseSensitive;

        $this->filterConditionFactory = $filterConditionFactory;

        // Cache an array of data sources (name => object pairs) for reference during the interpretation
        $this->dataSourceElements = array_combine(
            array_map(
                function (FieldInterface $element) use ($caseSensitive) {
                    return $caseSensitive ? $element->getUniqueName() : strtolower($element->getUniqueName());
                },
                $this->dataSource->getFields()
            ),
            $this->dataSource->getFields()
        );
    }

    /**
     * Helper method: matches filtering operators to valid UQL operators
     * in order to do Filter to UQL transformations
     *
     * @param $method
     *
     * @throws Exception\UQLInterpreterException
     * @return
     */
    public static function methodToUQLOperator($method)
    {
        $translationMap = [
            FilterCondition::METHOD_STRING_EQ => "=",
            FilterCondition::METHOD_STRING_LIKE => "~",
            FilterCondition::METHOD_STRING_NEQ => "!=",
            FilterCondition::METHOD_NUMERIC_GT => ">",
            FilterCondition::METHOD_NUMERIC_GTE => ">=",
            FilterCondition::METHOD_NUMERIC_EQ => "=",
            FilterCondition::METHOD_NUMERIC_LTE => "<=",
            FilterCondition::METHOD_NUMERIC_LT => "<",
            FilterCondition::METHOD_NUMERIC_NEQ => "!=",
            FilterCondition::METHOD_IN => "IN",
            FilterCondition::METHOD_BOOLEAN => "is",
            FilterCondition::METHOD_IS_NULL => "is null",
            FilterCondition::METHOD_DATETIME_GT => "after",
            FilterCondition::METHOD_DATETIME_GTE => "after or at",
            FilterCondition::METHOD_DATETIME_EQ => "at",
            FilterCondition::METHOD_DATETIME_LTE => "before or at",
            FilterCondition::METHOD_DATETIME_LT => "before",
            FilterCondition::METHOD_DATETIME_NEQ => "not at",
        ];

        if (isset($translationMap[$method])) {
            return $translationMap[$method];
        }

        throw new UQLInterpreterException("Can't translate filtering method '$method'' into a valid UQL operator");
    }

    /**
     * Generate the filter objects corresponding to a UQL string.
     *
     * @param $UQLStringInput
     *
     * @return Filter
     */
    public function generateFilters($UQLStringInput)
    {
        if (empty(trim($UQLStringInput))) {
            return new Filter();
        }

        // Get the Abstract Syntax Tree of the input from the parser
        $parser = new Parser();
        $AST = $parser->parse($UQLStringInput);

        // Recursively translate into filters.
        $filters = $this->buildFilterLevel($AST);

        if ($filters instanceof FilterCondition) {
            // Single filter. Wrap into dummy filter collection for consistency.
            $filterDefinition = new Filter();
            $filterDefinition[] = $filters;
            $filters = $filterDefinition;
        }

        return $filters;
    }

    /**
     * Transforms a subtree of the AST into a concrete filter definition.
     * This function recursively builds all sub-trees.
     *
     * @param $astSubtree
     *
     * @return Filter|Filter
     * @throws \Exception
     */
    public function buildFilterLevel($astSubtree)
    {
        if ($astSubtree instanceof ASTGroup) {
            $filterDefinition = new Filter();
            $condition = $this->translateLogic($astSubtree->getLogic());
            $filterDefinition->setConditionType($condition);
            foreach ($astSubtree->getElements() as $element) {
                $filterDefinition[] = $this->buildFilterLevel($element);
            }

            return $filterDefinition;
        } elseif ($astSubtree instanceof ASTAssertion) {
            $field = $this->matchDataSourceElement($astSubtree->getIdentifier());
            $method = $this->translateOperator($astSubtree->getOperator(), $field);
            $value = $this->getValue($astSubtree);

            return $this->filterConditionFactory->create($value, $method, $field);
function acceptsInteger($int) { }

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

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
        }

        throw new UQLInterpreterException('Unexpected Abstract Syntax Tree element');
    }

    /**
     * Translate <operator> tokens into Filter Methods.
     *
     * @param                          $token
     * @param FieldInterface $dataSourceElement
     *
     * @throws Exception\UQLInterpreterException
     * @return mixed
     */
    public function translateOperator($token, FieldInterface $dataSourceElement)
    {
        $translationTable = [
            "T_OP_LT" => [
                FilterCondition::METHOD_NUMERIC_LT,
                FilterCondition::METHOD_DATETIME_LT,
            ],
            "T_OP_LTE" => [
                FilterCondition::METHOD_NUMERIC_LTE,
                FilterCondition::METHOD_DATETIME_LTE,
            ],
            "T_OP_EQ" => [
                FilterCondition::METHOD_NUMERIC_EQ,
                FilterCondition::METHOD_STRING_EQ,
                FilterCondition::METHOD_DATETIME_EQ,
                FilterCondition::METHOD_BOOLEAN,
            ],
            "T_OP_GTE" => [
                FilterCondition::METHOD_NUMERIC_GTE,
                FilterCondition::METHOD_DATETIME_GTE,
            ],
            "T_OP_GT" => [
                FilterCondition::METHOD_NUMERIC_GT,
                FilterCondition::METHOD_DATETIME_GT,
            ],
            "T_OP_NEQ" => [
                FilterCondition::METHOD_NUMERIC_NEQ,
                FilterCondition::METHOD_STRING_NEQ,
            ],
            "T_OP_LIKE" => [
                FilterCondition::METHOD_STRING_LIKE,
            ],
            "T_OP_IN" => [
                FilterCondition::METHOD_IN,
            ],
        ];

        if (!isset($translationTable[$token])) {
            throw new UQLInterpreterException('Unable to translate token ' . $token . ' to a valid filtering method. Unknown token.');
        }
        $possibleMethods = $translationTable[$token];

        // See if any of the methods is the default of the data type
        $dataType = $dataSourceElement->getDataType();
        foreach ($possibleMethods as $possibleMethod) {
            if ($possibleMethod === $dataType->getDefaultFilterMethod()) {
                return $possibleMethod;
            }
        }

        // Else, just accept the first one in the available methods
        foreach ($possibleMethods as $possibleMethod) {
            if (in_array($possibleMethod, $dataType->getAvailableFilterMethods())) {
                return $possibleMethod;
            }
        }

        throw new UQLInterpreterException('Unable to translate token ' . $token . ' to a valid filtering method. No methods are valid for the data type "' . $dataType->getName() . '" for data element "' . $dataSourceElement->getUniqueName() . '"');
    }

    /**
     * Translate Lexer <logic> tokens into Filter Condition Types.
     *
     * @param $token
     *
     * @return mixed
     * @throws \Exception
     */
    protected function translateLogic($token)
    {
        $translationTable = [
            "T_LOGIC_AND" => Filter::CONDITION_TYPE_AND,
            "T_LOGIC_OR" => Filter::CONDITION_TYPE_OR,
            "T_LOGIC_XOR" => Filter::CONDITION_TYPE_XOR,
        ];

        if (isset($translationTable[$token])) {
            return $translationTable[$token];
        }

        throw new \Exception('Unable to translate token ' . $token . ' to a valid filter condition type.');
    }

    /**
     * Trim and clean up the value to be set in the filter.
     *
     * @param $value
     *
     * @return mixed
     */
    protected function parseValue($value)
    {
        if (is_bool($value)) {
            return $value ? "1" : "0";
        }

        return trim($value, "\"'");
    }

    /**
     * @param ASTFunctionCall $functionCall
     *
     * @return mixed
     * @throws Exception\UQLInterpreterException
     */
    private function callFunction(ASTFunctionCall $functionCall)
    {
        try {
            return $this->extensionContainer->callFunction($functionCall->getFunctionName(), $functionCall->getArguments());
        } catch (\Exception $e) {
            throw new UQLInterpreterException("The execution of function '" . $functionCall->getFunctionName() . "' failed. Please check the arguments are valid. (" . $e->getMessage() . ")");
        }
    }

    private function parseArray($elements)
    {
        $array = [];
        foreach ($elements as $element) {
            $array[] = $this->parseValue($element);
        }

        return $array;
    }

    /**
     * @param $identifier
     *
     * @return Field
     * @throws UQLInterpreterException
     */
    private function matchDataSourceElement($identifier)
    {
        if (!$this->caseSensitive) {
            $identifier = strtolower($identifier);
        }

        if (!isset($this->dataSourceElements[$identifier])) {
            throw new UQLInterpreterException('Unknown filtering element "' . $identifier . '"');
        }

        return $this->dataSourceElements[$identifier];
    }

    /**
     * @param ASTAssertion $astSubtree
     *
     * @return array|mixed
     *
     * @throws UQLInterpreterException
     */
    private function getValue(ASTAssertion $astSubtree)
    {
        if ($astSubtree->getValue() instanceof ASTFunctionCall) {
            return $this->callFunction($astSubtree->getValue());
        }

        if ($astSubtree->getOperator() == 'T_OP_IN') {
            if (!($astSubtree->getValue() instanceof ASTArray)) {
                throw new UQLInterpreterException('Only arrays are valid arguments for IN statements');
            }

            return $this->parseArray($astSubtree->getValue()->getElements());
        }

        return $this->parseValue($astSubtree->getValue());
    }
}


1			<?php
2
3			namespace Netdudes\DataSourceryBundle\UQL;
4
5			use Netdudes\DataSourceryBundle\DataSource\Configuration\Field;
6			use Netdudes\DataSourceryBundle\DataSource\Configuration\FieldInterface;
7			use Netdudes\DataSourceryBundle\DataSource\DataSourceInterface;
8			use Netdudes\DataSourceryBundle\DataType\PercentDataType;
9			use Netdudes\DataSourceryBundle\Extension\UqlExtensionContainer;
10			use Netdudes\DataSourceryBundle\Query\Filter;
11			use Netdudes\DataSourceryBundle\Query\FilterCondition;
12			use Netdudes\DataSourceryBundle\Query\FilterConditionFactory;
13			use Netdudes\DataSourceryBundle\UQL\AST\ASTArray;
14			use Netdudes\DataSourceryBundle\UQL\AST\ASTAssertion;
15			use Netdudes\DataSourceryBundle\UQL\AST\ASTFunctionCall;
16			use Netdudes\DataSourceryBundle\UQL\AST\ASTGroup;
17			use Netdudes\DataSourceryBundle\UQL\Exception\UQLInterpreterException;
18
19			/**
20			* Class Interpreter
21			*
22			* The Interpreter transforms the generic Abstract Syntax Tree into
23			* the specific FilterDefinition elements.
24			*/
25			class Interpreter
26			{
27			/**
28			* @var UqlExtensionContainer
29			*/
30			private $extensionContainer;
31
32			/**
33			* @var DataSourceInterface
34			*/
35			private $dataSource;
36
37			/**
38			* @var array
39			*/
40			private $dataSourceElements;
41
42			/**
43			* @var bool
44			*/
45			private $caseSensitive;
46
47			/**
48			* @var FilterConditionFactory
49			*/
50			private $filterConditionFactory;
51
52			/**
53			* Constructor needs the columns descriptor to figure out appropriate filtering methods
54			* and translate identifiers.
55			*
56			* @param UqlExtensionContainer $extensionContainer
57			* @param DataSourceInterface $dataSource
58			* @param bool $caseSensitive
59			* @param FilterConditionFactory $filterConditionFactory
60			*/
61			public function __construct(
62			UqlExtensionContainer $extensionContainer,
63			DataSourceInterface $dataSource,
64			FilterConditionFactory $filterConditionFactory,
65			$caseSensitive = true
66			) {
67			$this->extensionContainer = $extensionContainer;
68			$this->dataSource = $dataSource;
69			$this->caseSensitive = $caseSensitive;
70
71			$this->filterConditionFactory = $filterConditionFactory;
72
73			// Cache an array of data sources (name => object pairs) for reference during the interpretation
74			$this->dataSourceElements = array_combine(
75			array_map(
76			function (FieldInterface $element) use ($caseSensitive) {
77			return $caseSensitive ? $element->getUniqueName() : strtolower($element->getUniqueName());
78			},
79			$this->dataSource->getFields()
80			),
81			$this->dataSource->getFields()
82			);
83			}
84
85			/**
86			* Helper method: matches filtering operators to valid UQL operators
87			* in order to do Filter to UQL transformations
88			*
89			* @param $method
90			*
91			* @throws Exception\UQLInterpreterException
92			* @return
93			*/
94			public static function methodToUQLOperator($method)
95			{
96			$translationMap = [
97			FilterCondition::METHOD_STRING_EQ => "=",
98			FilterCondition::METHOD_STRING_LIKE => "~",
99			FilterCondition::METHOD_STRING_NEQ => "!=",
100			FilterCondition::METHOD_NUMERIC_GT => ">",
101			FilterCondition::METHOD_NUMERIC_GTE => ">=",
102			FilterCondition::METHOD_NUMERIC_EQ => "=",
103			FilterCondition::METHOD_NUMERIC_LTE => "<=",
104			FilterCondition::METHOD_NUMERIC_LT => "<",
105			FilterCondition::METHOD_NUMERIC_NEQ => "!=",
106			FilterCondition::METHOD_IN => "IN",
107			FilterCondition::METHOD_BOOLEAN => "is",
108			FilterCondition::METHOD_IS_NULL => "is null",
109			FilterCondition::METHOD_DATETIME_GT => "after",
110			FilterCondition::METHOD_DATETIME_GTE => "after or at",
111			FilterCondition::METHOD_DATETIME_EQ => "at",
112			FilterCondition::METHOD_DATETIME_LTE => "before or at",
113			FilterCondition::METHOD_DATETIME_LT => "before",
114			FilterCondition::METHOD_DATETIME_NEQ => "not at",
115			];
116
117			if (isset($translationMap[$method])) {
118			return $translationMap[$method];
119			}
120
121			throw new UQLInterpreterException("Can't translate filtering method '$method'' into a valid UQL operator");
122			}
123
124			/**
125			* Generate the filter objects corresponding to a UQL string.
126			*
127			* @param $UQLStringInput
128			*
129			* @return Filter
130			*/
131			public function generateFilters($UQLStringInput)
132			{
133			if (empty(trim($UQLStringInput))) {
134			return new Filter();
135			}
136
137			// Get the Abstract Syntax Tree of the input from the parser
138			$parser = new Parser();
139			$AST = $parser->parse($UQLStringInput);
140
141			// Recursively translate into filters.
142			$filters = $this->buildFilterLevel($AST);
143
144			if ($filters instanceof FilterCondition) {
145			// Single filter. Wrap into dummy filter collection for consistency.
146			$filterDefinition = new Filter();
147			$filterDefinition[] = $filters;
148			$filters = $filterDefinition;
149			}
150
151			return $filters;
152			}
153
154			/**
155			* Transforms a subtree of the AST into a concrete filter definition.
156			* This function recursively builds all sub-trees.
157			*
158			* @param $astSubtree
159			*
160			* @return Filter\|Filter
161			* @throws \Exception
162			*/
163			public function buildFilterLevel($astSubtree)
164			{
165			if ($astSubtree instanceof ASTGroup) {
166			$filterDefinition = new Filter();
167			$condition = $this->translateLogic($astSubtree->getLogic());
168			$filterDefinition->setConditionType($condition);
169			foreach ($astSubtree->getElements() as $element) {
170			$filterDefinition[] = $this->buildFilterLevel($element);
171			}
172
173			return $filterDefinition;
174			} elseif ($astSubtree instanceof ASTAssertion) {
175			$field = $this->matchDataSourceElement($astSubtree->getIdentifier());
176			$method = $this->translateOperator($astSubtree->getOperator(), $field);
177			$value = $this->getValue($astSubtree);
178
179			return $this->filterConditionFactory->create($value, $method, $field);
			0 ignored issues – show Documentation introduced 2016-01-25 14:42 UTC by Report Bug Copy Issue Report `$field` is of type `object<Netdudes\DataSour...ce\Configuration\Field>`, but the function expects a `string`. 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... Bug Best Practice introduced 2016-01-25 14:42 UTC by Report Bug Copy Issue Report The return type of `return $this->filterCond...alue, $method, $field);` (`Netdudes\DataSourceryBundle\Query\FilterCondition`) is incompatible with the return type documented by `Netdudes\DataSourceryBun...reter::buildFilterLevel` of type `Netdudes\DataSourceryBundle\Query\Filter`. 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...
180			}
181
182			throw new UQLInterpreterException('Unexpected Abstract Syntax Tree element');
183			}
184
185			/**
186			* Translate <operator> tokens into Filter Methods.
187			*
188			* @param $token
189			* @param FieldInterface $dataSourceElement
190			*
191			* @throws Exception\UQLInterpreterException
192			* @return mixed
193			*/
194			public function translateOperator($token, FieldInterface $dataSourceElement)
195			{
196			$translationTable = [
197			"T_OP_LT" => [
198			FilterCondition::METHOD_NUMERIC_LT,
199			FilterCondition::METHOD_DATETIME_LT,
200			],
201			"T_OP_LTE" => [
202			FilterCondition::METHOD_NUMERIC_LTE,
203			FilterCondition::METHOD_DATETIME_LTE,
204			],
205			"T_OP_EQ" => [
206			FilterCondition::METHOD_NUMERIC_EQ,
207			FilterCondition::METHOD_STRING_EQ,
208			FilterCondition::METHOD_DATETIME_EQ,
209			FilterCondition::METHOD_BOOLEAN,
210			],
211			"T_OP_GTE" => [
212			FilterCondition::METHOD_NUMERIC_GTE,
213			FilterCondition::METHOD_DATETIME_GTE,
214			],
215			"T_OP_GT" => [
216			FilterCondition::METHOD_NUMERIC_GT,
217			FilterCondition::METHOD_DATETIME_GT,
218			],
219			"T_OP_NEQ" => [
220			FilterCondition::METHOD_NUMERIC_NEQ,
221			FilterCondition::METHOD_STRING_NEQ,
222			],
223			"T_OP_LIKE" => [
224			FilterCondition::METHOD_STRING_LIKE,
225			],
226			"T_OP_IN" => [
227			FilterCondition::METHOD_IN,
228			],
229			];
230
231			if (!isset($translationTable[$token])) {
232			throw new UQLInterpreterException('Unable to translate token ' . $token . ' to a valid filtering method. Unknown token.');
233			}
234			$possibleMethods = $translationTable[$token];
235
236			// See if any of the methods is the default of the data type
237			$dataType = $dataSourceElement->getDataType();
238			foreach ($possibleMethods as $possibleMethod) {
239			if ($possibleMethod === $dataType->getDefaultFilterMethod()) {
240			return $possibleMethod;
241			}
242			}
243
244			// Else, just accept the first one in the available methods
245			foreach ($possibleMethods as $possibleMethod) {
246			if (in_array($possibleMethod, $dataType->getAvailableFilterMethods())) {
247			return $possibleMethod;
248			}
249			}
250
251			throw new UQLInterpreterException('Unable to translate token ' . $token . ' to a valid filtering method. No methods are valid for the data type "' . $dataType->getName() . '" for data element "' . $dataSourceElement->getUniqueName() . '"');
252			}
253
254			/**
255			* Translate Lexer <logic> tokens into Filter Condition Types.
256			*
257			* @param $token
258			*
259			* @return mixed
260			* @throws \Exception
261			*/
262			protected function translateLogic($token)
263			{
264			$translationTable = [
265			"T_LOGIC_AND" => Filter::CONDITION_TYPE_AND,
266			"T_LOGIC_OR" => Filter::CONDITION_TYPE_OR,
267			"T_LOGIC_XOR" => Filter::CONDITION_TYPE_XOR,
268			];
269
270			if (isset($translationTable[$token])) {
271			return $translationTable[$token];
272			}
273
274			throw new \Exception('Unable to translate token ' . $token . ' to a valid filter condition type.');
275			}
276
277			/**
278			* Trim and clean up the value to be set in the filter.
279			*
280			* @param $value
281			*
282			* @return mixed
283			*/
284			protected function parseValue($value)
285			{
286			if (is_bool($value)) {
287			return $value ? "1" : "0";
288			}
289
290			return trim($value, "\"'");
291			}
292
293			/**
294			* @param ASTFunctionCall $functionCall
295			*
296			* @return mixed
297			* @throws Exception\UQLInterpreterException
298			*/
299			private function callFunction(ASTFunctionCall $functionCall)
300			{
301			try {
302			return $this->extensionContainer->callFunction($functionCall->getFunctionName(), $functionCall->getArguments());
303			} catch (\Exception $e) {
304			throw new UQLInterpreterException("The execution of function '" . $functionCall->getFunctionName() . "' failed. Please check the arguments are valid. (" . $e->getMessage() . ")");
305			}
306			}
307
308			private function parseArray($elements)
309			{
310			$array = [];
311			foreach ($elements as $element) {
312			$array[] = $this->parseValue($element);
313			}
314
315			return $array;
316			}
317
318			/**
319			* @param $identifier
320			*
321			* @return Field
322			* @throws UQLInterpreterException
323			*/
324			private function matchDataSourceElement($identifier)
325			{
326			if (!$this->caseSensitive) {
327			$identifier = strtolower($identifier);
328			}
329
330			if (!isset($this->dataSourceElements[$identifier])) {
331			throw new UQLInterpreterException('Unknown filtering element "' . $identifier . '"');
332			}
333
334			return $this->dataSourceElements[$identifier];
335			}
336
337			/**
338			* @param ASTAssertion $astSubtree
339			*
340			* @return array\|mixed
341			*
342			* @throws UQLInterpreterException
343			*/
344			private function getValue(ASTAssertion $astSubtree)
345			{
346			if ($astSubtree->getValue() instanceof ASTFunctionCall) {
347			return $this->callFunction($astSubtree->getValue());
348			}
349
350			if ($astSubtree->getOperator() == 'T_OP_IN') {
351			if (!($astSubtree->getValue() instanceof ASTArray)) {
352			throw new UQLInterpreterException('Only arrays are valid arguments for IN statements');
353			}
354
355			return $this->parseArray($astSubtree->getValue()->getElements());
356			}
357
358			return $this->parseValue($astSubtree->getValue());
359			}
360			}
361

netdudes / DataSourceryBundle

Pull Request — master (#12)

Interpreter::translateOperator() B

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Long Method

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