TypeSystem::getBinaryOperation() - Code Metrics - TimeToogo/Pinq - Measure and Improve Code Quality continuously with Scrutinizer

TypeSystem::getBinaryOperation() C
last analyzed 2017-09-06 06:30 UTC

↳ Parent: TypeSystem

Complexity

Conditions	7
Paths	4

Size

Total Lines	23
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	23
rs	6.7272
c	0
b	0
f	0
cc	7
eloc	14
nc	4
nop	3

<?php

namespace Pinq\Analysis;

use Pinq\Analysis\BinaryOperations\BinaryOperation;
use Pinq\Analysis\TypeOperations\TypeOperation;
use Pinq\Expressions\Operators;

/**
 * Base class of the type system.
 *
 * @author Elliot Levin <[email protected]>
 */
abstract class TypeSystem implements ITypeSystem
{
    /**
     * @var INativeType[]
     */
    protected $nativeTypes = [];

    /**
     * @var IObjectType[]
     */
    protected $objectTypes = [];

    /**
     * @var ICompositeType[]
     */
    protected $compositeTypes = [];

    /**
     * @var IType[]
     */
    protected $customTypes = [];

    /**
     * @var IFunction[]
     */
    protected $functions = [];

    /**
     * @var IBinaryOperation[]
     */
    protected $binaryOperations = [];

    public function __construct()
    {
        foreach ($this->buildNativeTypes() as $nativeType) {
            $this->nativeTypes[$nativeType->getTypeOfType()] = $nativeType;
        }

        foreach ($this->buildBinaryOperations() as $binaryOperation) {
            $this->binaryOperations[] = $binaryOperation;
        }
    }

    /**
     * Performs all necessary normalization to the class name.
     *
     * @param string $name
     *
     * @return string
     */
    protected function normalizeClassName($name)
    {
        return $name;
    }

    /**
     * Performs all necessary normalization the function name.
     *
     * @param string $name
     *
     * @return string
     */
    protected function normalizeFunctionName($name)
    {
        return $name;
    }

    protected function buildTypeOperations($type, array $operatorTypeMap = [])
    {
        return array_map(
                function ($returnType) use ($type) {
                    return new TypeOperation($this, $type, $returnType);
                },
                $operatorTypeMap
        );
    }

    /**
     * @return INativeType[]
     */
    abstract protected function nativeTypes();

    /**
     * @return INativeType[]
     */
    protected function buildNativeTypes()
    {
        return $this->nativeTypes();
    }

    /**
     * @return array[]
     */
    abstract protected function binaryOperations();

    /**
     * @return IBinaryOperation[]
     */
    protected function buildBinaryOperations()
    {
        $binaryOperations = [];
        foreach ($this->binaryOperations() as $operator) {
            $binaryOperations[] = new BinaryOperation($this, $operator[0], $operator[1], $operator[2], $operator['return']);
        }

        return $binaryOperations;
    }

    public function getType($typeIdentifier)
    {
        if (TypeId::isObject($typeIdentifier)) {
            return $this->getObjectType(TypeId::getClassTypeFromId($typeIdentifier));
        } elseif (TypeId::isComposite($typeIdentifier)) {
            return $this->getCompositeType(
                    array_map([$this, __FUNCTION__], TypeId::getComposedTypeIdsFromId($typeIdentifier))
            );
        } else {
            return $this->getNativeType($typeIdentifier);
        }
    }

    public function getNativeType($nativeType)
    {
        if (!isset($this->nativeTypes[$nativeType])) {
            throw new TypeException('Cannot get native type \'%s\': type is not supported', $nativeType);
        }

        return $this->nativeTypes[$nativeType];
    }

    /**
     * @param string $typeId
     * @param string $classType
     *
     * @return IObjectType
     */
    abstract protected function buildObjectType($typeId, $classType);

    public function getObjectType($classType)
    {
        $normalizedClassType = $this->normalizeClassName($classType);
        $typeId = TypeId::getObject($normalizedClassType);
        if (!isset($this->objectTypes[$typeId])) {
            $this->objectTypes[$typeId] = $this->buildObjectType($typeId, $normalizedClassType);
        }

        return $this->objectTypes[$typeId];
    }

    /**
     * @param string  $typeId
     * @param IType[] $types
     *
     * @return ICompositeType
     */
    abstract protected function buildCompositeType($typeId, array $types);

    public function getCompositeType(array $types)
    {
        $types = $this->flattenComposedTypes($types);

        //Remove any redundant types: (\Iterator and \Traversable) becomes \Iterator
        /** @var $types IType[] */
        foreach ($types as $outer => $outerType) {
            foreach ($types as $inner => $innerType) {
                if ($outer !== $inner && $innerType->isParentTypeOf($outerType)) {
                    unset($types[$inner]);
                }
            }
        }

        if (count($types) === 0) {
            return $this->getNativeType(INativeType::TYPE_MIXED);
        } elseif (count($types) === 1) {
            return reset($types);

        }

        ksort($types, SORT_STRING);
        $typeId = TypeId::getComposite(array_keys($types));
        if (!isset($this->compositeTypes[$typeId])) {
            $this->compositeTypes[$typeId] = $this->buildCompositeType($typeId, $types);
        }

        return $this->compositeTypes[$typeId];
    }

    /**
     * Flattens all the composed types.
     *
     * @param IType[] $types
     *
     * @return IType[]
     */
    protected function flattenComposedTypes(array $types)
    {
        $composedTypes = [];
        foreach ($types as $type) {
            if ($type instanceof ICompositeType) {
                $composedTypes += $this->flattenComposedTypes($type->getComposedTypes());
            } else {
                $composedTypes[$type->getIdentifier()] = $type;
            }
        }

        return $composedTypes;
    }

    /**
     * @param string $name
     *
     * @return IFunction
     */
    abstract protected function buildFunction($name);

    public function getFunction($name)
    {
        $normalizedName = $this->normalizeFunctionName($name);
        if (!isset($this->functions[$normalizedName])) {
            $this->functions[$normalizedName] = $this->buildFunction($normalizedName);
        }

        return $this->functions[$normalizedName];
    }

    public function getBinaryOperation(IType $leftOperandType, $operator, IType $rightOperandType)
    {
        foreach ($this->binaryOperations as $binaryOperation) {
            $leftOperand = $binaryOperation->getLeftOperandType();
            $rightOperand = $binaryOperation->getRightOperandType();

            if ($binaryOperation->getOperator() === $operator) {
                if (($leftOperand->isParentTypeOf($leftOperandType) && $rightOperand->isParentTypeOf($rightOperandType))
                        //Binary operators are symmetrical: test for flipped operands
                        || ($leftOperand->isParentTypeOf($rightOperandType)
                                && $rightOperand->isParentTypeOf($leftOperandType))
                ) {
                    return $binaryOperation;
                }
            }
        }

        throw new TypeException(
                'Cannot get binary operation: operation for \'%s\' %s \'%s\' is not supported',
                $leftOperandType->getIdentifier(),
                $operator,
                $rightOperandType->getIdentifier());
    }
}


1			<?php
2
3			namespace Pinq\Analysis;
4
5			use Pinq\Analysis\BinaryOperations\BinaryOperation;
6			use Pinq\Analysis\TypeOperations\TypeOperation;
7			use Pinq\Expressions\Operators;
8
9			/**
10			* Base class of the type system.
11			*
12			* @author Elliot Levin <[email protected]>
13			*/
14			abstract class TypeSystem implements ITypeSystem
15			{
16			/**
17			* @var INativeType[]
18			*/
19			protected $nativeTypes = [];
20
21			/**
22			* @var IObjectType[]
23			*/
24			protected $objectTypes = [];
25
26			/**
27			* @var ICompositeType[]
28			*/
29			protected $compositeTypes = [];
30
31			/**
32			* @var IType[]
33			*/
34			protected $customTypes = [];
35
36			/**
37			* @var IFunction[]
38			*/
39			protected $functions = [];
40
41			/**
42			* @var IBinaryOperation[]
43			*/
44			protected $binaryOperations = [];
45
46			public function __construct()
47			{
48			foreach ($this->buildNativeTypes() as $nativeType) {
49			$this->nativeTypes[$nativeType->getTypeOfType()] = $nativeType;
50			}
51
52			foreach ($this->buildBinaryOperations() as $binaryOperation) {
53			$this->binaryOperations[] = $binaryOperation;
54			}
55			}
56
57			/**
58			* Performs all necessary normalization to the class name.
59			*
60			* @param string $name
61			*
62			* @return string
63			*/
64			protected function normalizeClassName($name)
65			{
66			return $name;
67			}
68
69			/**
70			* Performs all necessary normalization the function name.
71			*
72			* @param string $name
73			*
74			* @return string
75			*/
76			protected function normalizeFunctionName($name)
77			{
78			return $name;
79			}
80
81			protected function buildTypeOperations($type, array $operatorTypeMap = [])
82			{
83			return array_map(
84			function ($returnType) use ($type) {
85			return new TypeOperation($this, $type, $returnType);
86			},
87			$operatorTypeMap
88			);
89			}
90
91			/**
92			* @return INativeType[]
93			*/
94			abstract protected function nativeTypes();
95
96			/**
97			* @return INativeType[]
98			*/
99			protected function buildNativeTypes()
100			{
101			return $this->nativeTypes();
102			}
103
104			/**
105			* @return array[]
106			*/
107			abstract protected function binaryOperations();
108
109			/**
110			* @return IBinaryOperation[]
111			*/
112			protected function buildBinaryOperations()
113			{
114			$binaryOperations = [];
115			foreach ($this->binaryOperations() as $operator) {
116			$binaryOperations[] = new BinaryOperation($this, $operator[0], $operator[1], $operator[2], $operator['return']);
117			}
118
119			return $binaryOperations;
120			}
121
122			public function getType($typeIdentifier)
123			{
124			if (TypeId::isObject($typeIdentifier)) {
125			return $this->getObjectType(TypeId::getClassTypeFromId($typeIdentifier));
126			} elseif (TypeId::isComposite($typeIdentifier)) {
127			return $this->getCompositeType(
128			array_map([$this, __FUNCTION__], TypeId::getComposedTypeIdsFromId($typeIdentifier))
129			);
130			} else {
131			return $this->getNativeType($typeIdentifier);
132			}
133			}
134
135			public function getNativeType($nativeType)
136			{
137			if (!isset($this->nativeTypes[$nativeType])) {
138			throw new TypeException('Cannot get native type \'%s\': type is not supported', $nativeType);
139			}
140
141			return $this->nativeTypes[$nativeType];
142			}
143
144			/**
145			* @param string $typeId
146			* @param string $classType
147			*
148			* @return IObjectType
149			*/
150			abstract protected function buildObjectType($typeId, $classType);
151
152			public function getObjectType($classType)
153			{
154			$normalizedClassType = $this->normalizeClassName($classType);
155			$typeId = TypeId::getObject($normalizedClassType);
156			if (!isset($this->objectTypes[$typeId])) {
157			$this->objectTypes[$typeId] = $this->buildObjectType($typeId, $normalizedClassType);
158			}
159
160			return $this->objectTypes[$typeId];
161			}
162
163			/**
164			* @param string $typeId
165			* @param IType[] $types
166			*
167			* @return ICompositeType
168			*/
169			abstract protected function buildCompositeType($typeId, array $types);
170
171			public function getCompositeType(array $types)
172			{
173			$types = $this->flattenComposedTypes($types);
174
175			//Remove any redundant types: (\Iterator and \Traversable) becomes \Iterator
176			/** @var $types IType[] */
177			foreach ($types as $outer => $outerType) {
178			foreach ($types as $inner => $innerType) {
179			if ($outer !== $inner && $innerType->isParentTypeOf($outerType)) {
180			unset($types[$inner]);
181			}
182			}
183			}
184
185			if (count($types) === 0) {
186			return $this->getNativeType(INativeType::TYPE_MIXED);
187			} elseif (count($types) === 1) {
188			return reset($types);
			0 ignored issues – show Comprehensibility Best Practice introduced 2016-08-30 06:48 UTC by Report Bug Copy Issue Report The expression `reset($types);` of type `Pinq\Analysis\IType\|false` adds `false` to the return on line 188 which is incompatible with the return type declared by the interface `Pinq\Analysis\ITypeSystem::getCompositeType` of type `Pinq\Analysis\IType`. It seems like you forgot to handle an error condition. Loading history...
189			}
190
191			ksort($types, SORT_STRING);
192			$typeId = TypeId::getComposite(array_keys($types));
193			if (!isset($this->compositeTypes[$typeId])) {
194			$this->compositeTypes[$typeId] = $this->buildCompositeType($typeId, $types);
195			}
196
197			return $this->compositeTypes[$typeId];
198			}
199
200			/**
201			* Flattens all the composed types.
202			*
203			* @param IType[] $types
204			*
205			* @return IType[]
206			*/
207			protected function flattenComposedTypes(array $types)
208			{
209			$composedTypes = [];
210			foreach ($types as $type) {
211			if ($type instanceof ICompositeType) {
212			$composedTypes += $this->flattenComposedTypes($type->getComposedTypes());
213			} else {
214			$composedTypes[$type->getIdentifier()] = $type;
215			}
216			}
217
218			return $composedTypes;
219			}
220
221			/**
222			* @param string $name
223			*
224			* @return IFunction
225			*/
226			abstract protected function buildFunction($name);
227
228			public function getFunction($name)
229			{
230			$normalizedName = $this->normalizeFunctionName($name);
231			if (!isset($this->functions[$normalizedName])) {
232			$this->functions[$normalizedName] = $this->buildFunction($normalizedName);
233			}
234
235			return $this->functions[$normalizedName];
236			}
237
238			public function getBinaryOperation(IType $leftOperandType, $operator, IType $rightOperandType)
239			{
240			foreach ($this->binaryOperations as $binaryOperation) {
241			$leftOperand = $binaryOperation->getLeftOperandType();
242			$rightOperand = $binaryOperation->getRightOperandType();
243
244			if ($binaryOperation->getOperator() === $operator) {
245			if (($leftOperand->isParentTypeOf($leftOperandType) && $rightOperand->isParentTypeOf($rightOperandType))
246			//Binary operators are symmetrical: test for flipped operands
247			\|\| ($leftOperand->isParentTypeOf($rightOperandType)
248			&& $rightOperand->isParentTypeOf($leftOperandType))
249			) {
250			return $binaryOperation;
251			}
252			}
253			}
254
255			throw new TypeException(
256			'Cannot get binary operation: operation for \'%s\' %s \'%s\' is not supported',
257			$leftOperandType->getIdentifier(),
258			$operator,
259			$rightOperandType->getIdentifier());
260			}
261			}
262

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TypeSystem::getBinaryOperation() C last analyzed 2017-09-06 06:30 UTC

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TypeSystem::getBinaryOperation() C
last analyzed 2017-09-06 06:30 UTC