Expression::declareVariable() - Code Metrics - ovr/phpsa - Measure and Improve Code Quality continuously with Scrutinizer

Expression::declareVariable() A
last analyzed 2019-02-27 06:44 UTC

↳ Parent: Expression

Complexity

Conditions	2
Paths	2

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	6

Importance

Changes

Metric	Value
cc	2
nc	2
nop	3
dl	0
loc	12
ccs	0
cts	7
cp	0
crap	6
rs	9.8666
c	0
b	0
f	0

<?php
/**
 * @author Patsura Dmitry https://github.com/ovr <[email protected]>
 */

namespace PHPSA\Compiler;

use InvalidArgumentException;
use phpDocumentor\Reflection\DocBlockFactory;
use PHPSA\CompiledExpression;
use PHPSA\Compiler\Event\ExpressionBeforeCompile;
use PHPSA\Context;
use PhpParser\Node;
use PHPSA\Definition\ClassDefinition;
use PHPSA\Exception\RuntimeException;
use PHPSA\Variable;
use PHPSA\Compiler\Expression\AbstractExpressionCompiler;
use Webiny\Component\EventManager\EventManager;

class Expression

{
    /**
     * @var Context
     */
    protected $context;

    /**
     * @var EventManager
     */
    protected $eventManager;

    /**
     * @param Context $context
     */
    public function __construct(Context $context, EventManager $eventManager)
    {
        $this->context = $context;
        $this->eventManager = $eventManager;
    }

    /**
     * @param $expr
     * @return ExpressionCompilerInterface|AbstractExpressionCompiler
     */
    protected function factory($expr)
    {
        switch (get_class($expr)) {
            /**
             * Call(s)
             */
            case Node\Expr\MethodCall::class:
                return new Expression\MethodCall();
            case Node\Expr\FuncCall::class:
                return new Expression\FunctionCall();
            case Node\Expr\StaticCall::class:
                return new Expression\StaticCall();
            /**
             * Operators
             */
            case Node\Expr\New_::class:
                return new Expression\Operators\NewOp();
            case Node\Expr\Instanceof_::class:
                return new Expression\Operators\InstanceOfOp();
            /**
             * AssignOp
             */
            case Node\Expr\AssignOp\Pow::class:
                return new Expression\AssignOp\Pow();
            case Node\Expr\AssignOp\Plus::class:
                return new Expression\AssignOp\Plus();
            case Node\Expr\AssignOp\Minus::class:
                return new Expression\AssignOp\Minus();
            case Node\Expr\AssignOp\Mul::class:
                return new Expression\AssignOp\Mul();
            case Node\Expr\AssignOp\Div::class:
                return new Expression\AssignOp\Div();
            case Node\Expr\AssignOp\Mod::class:
                return new Expression\AssignOp\Mod();
            case Node\Expr\AssignOp\BitwiseOr::class:
                return new Expression\AssignOp\BitwiseOr();
            case Node\Expr\AssignOp\BitwiseAnd::class:
                return new Expression\AssignOp\BitwiseAnd();
            case Node\Expr\AssignOp\BitwiseXor::class:
                return new Expression\AssignOp\BitwiseXor();
            case Node\Expr\AssignOp\Concat::class:
                return new Expression\AssignOp\Concat();
            case Node\Expr\AssignOp\ShiftLeft::class:
                return new Expression\AssignOp\ShiftLeft();
            case Node\Expr\AssignOp\ShiftRight::class:
                return new Expression\AssignOp\ShiftRight();

            /**
             * BinaryOp
             */
            case Node\Expr\BinaryOp\Identical::class:
                return new Expression\BinaryOp\Identical();
            case Node\Expr\BinaryOp\Concat::class:
                return new Expression\Operators\Concat();
            case Node\Expr\BinaryOp\NotIdentical::class:
                return new Expression\BinaryOp\NotIdentical();
            case Node\Expr\BinaryOp\Equal::class:
                return new Expression\BinaryOp\Equal();
            case Node\Expr\BinaryOp\NotEqual::class:
                return new Expression\BinaryOp\NotEqual();
            case Node\Expr\BinaryOp\Spaceship::class:
                return new Expression\BinaryOp\SpaceShip();
            case Node\Expr\BinaryOp\Coalesce::class:
                return new Expression\BinaryOp\Coalesce();
                
            /**
             * @link http://php.net/manual/en/language.operators.increment.php
             */
            case Node\Expr\PostInc::class:
                return new Expression\Operators\PostInc();
            case Node\Expr\PostDec::class:
                return new Expression\Operators\PostDec();
            case Node\Expr\PreInc::class:
                return new Expression\Operators\PreInc();
            case Node\Expr\PreDec::class:
                return new Expression\Operators\PreDec();
            /**
             * Arithmetical
             */
            case Node\Expr\BinaryOp\Div::class:
                return new Expression\Operators\Arithmetical\Div();
            case Node\Expr\BinaryOp\Plus::class:
                return new Expression\Operators\Arithmetical\Plus();
            case Node\Expr\BinaryOp\Minus::class:
                return new Expression\Operators\Arithmetical\Minus();
            case Node\Expr\BinaryOp\Mul::class:
                return new Expression\Operators\Arithmetical\Mul();
            case Node\Expr\BinaryOp\Mod::class:
                return new Expression\Operators\Arithmetical\Mod();
            case Node\Expr\BinaryOp\Pow::class:
                return new Expression\Operators\Arithmetical\Pow();

            /**
             * Bitwise
             * @link http://php.net/manual/ru/language.operators.bitwise.php
             */
            case Node\Expr\BinaryOp\BitwiseOr::class:
                return new Expression\Operators\Bitwise\BitwiseOr();
            case Node\Expr\BinaryOp\BitwiseXor::class:
                return new Expression\Operators\Bitwise\BitwiseXor();
            case Node\Expr\BinaryOp\BitwiseAnd::class:
                return new Expression\Operators\Bitwise\BitwiseAnd();
            case Node\Expr\BinaryOp\ShiftRight::class:
                return new Expression\Operators\Bitwise\ShiftRight();
            case Node\Expr\BinaryOp\ShiftLeft::class:
                return new Expression\Operators\Bitwise\ShiftLeft();
            case Node\Expr\BitwiseNot::class:
                return new Expression\Operators\Bitwise\BitwiseNot();
            /**
             * Logical
             */
            case Node\Expr\BinaryOp\BooleanOr::class:
                return new Expression\Operators\Logical\BooleanOr();
            case Node\Expr\BinaryOp\BooleanAnd::class:
                return new Expression\Operators\Logical\BooleanAnd();
            case Node\Expr\BooleanNot::class:
                return new Expression\Operators\Logical\BooleanNot();
            case Node\Expr\BinaryOp\LogicalAnd::class:
                return new Expression\Operators\Logical\LogicalAnd();
            case Node\Expr\BinaryOp\LogicalOr::class:
                return new Expression\Operators\Logical\LogicalOr();
            case Node\Expr\BinaryOp\LogicalXor::class:
                return new Expression\Operators\Logical\LogicalXor();

            /**
             * Comparison
             */
            case Node\Expr\BinaryOp\Greater::class:
                return new Expression\Operators\Comparison\Greater();
            case Node\Expr\BinaryOp\GreaterOrEqual::class:
                return new Expression\Operators\Comparison\GreaterOrEqual();
            case Node\Expr\BinaryOp\Smaller::class:
                return new Expression\Operators\Comparison\Smaller();
            case Node\Expr\BinaryOp\SmallerOrEqual::class:
                return new Expression\Operators\Comparison\SmallerOrEqual();

            /**
             * Casts
             */
            case Node\Expr\Cast\Array_::class:
                return new Expression\Casts\ArrayCast();
            case Node\Expr\Cast\Bool_::class:
                return new Expression\Casts\BoolCast();
            case Node\Expr\Cast\Int_::class:
                return new Expression\Casts\IntCast();
            case Node\Expr\Cast\Double::class:
                return new Expression\Casts\DoubleCast();
            case Node\Expr\Cast\Object_::class:
                return new Expression\Casts\ObjectCast();
            case Node\Expr\Cast\String_::class:
                return new Expression\Casts\StringCast();
            case Node\Expr\Cast\Unset_::class:
                return new Expression\Casts\UnsetCast();


            /**
             * Other
             */
            case Node\Expr\Array_::class:
                return new Expression\ArrayOp();
            case Node\Expr\Assign::class:
                return new Expression\Assign();
            case Node\Expr\AssignRef::class:
                return new Expression\AssignRef();
            case Node\Expr\Closure::class:
                return new Expression\Closure();
            case Node\Expr\ConstFetch::class:
                return new Expression\ConstFetch();
            case Node\Expr\ClassConstFetch::class:
                return new Expression\ClassConstFetch();
            case Node\Expr\PropertyFetch::class:
                return new Expression\PropertyFetch();
            case Node\Expr\StaticPropertyFetch::class:
                return new Expression\StaticPropertyFetch();
            case Node\Expr\ArrayDimFetch::class:
                return new Expression\ArrayDimFetch();
            case Node\Expr\UnaryMinus::class:
                return new Expression\Operators\UnaryMinus();
            case Node\Expr\UnaryPlus::class:
                return new Expression\Operators\UnaryPlus();
            case Node\Expr\Exit_::class:
                return new Expression\ExitOp();
            case Node\Expr\Isset_::class:
                return new Expression\IssetOp();
            case Node\Expr\Print_::class:
                return new Expression\PrintOp();
            case Node\Expr\Empty_::class:
                return new Expression\EmptyOp();
            case Node\Expr\Eval_::class:
                return new Expression\EvalOp();
            case Node\Expr\ShellExec::class:
                return new Expression\ShellExec();
            case Node\Expr\ErrorSuppress::class:
                return new Expression\ErrorSuppress();
            case Node\Expr\Include_::class:
                return new Expression\IncludeOp();
            case Node\Expr\Clone_::class:
                return new Expression\CloneOp();
            case Node\Expr\Ternary::class:
                return new Expression\Ternary();
            case Node\Expr\Yield_::class:
                return new Expression\YieldOp();
            case Node\Expr\YieldFrom::class:
                return new Expression\YieldFrom();
            case Node\Expr\Variable::class:
                return new Expression\Variable();
        }

        return false;
    }

    /**
     * @param object|string $expr
     * @throws InvalidArgumentException when $expr is not string/object/null
     * @throws RuntimeException when compiler class does not return a CompiledExpression
     * @return CompiledExpression
     */
    public function compile($expr)
    {
        if (is_string($expr)) {
            return new CompiledExpression(CompiledExpression::STRING, $expr);
        }

        if (is_null($expr)) {
            return new CompiledExpression(CompiledExpression::NULL);
        }

        if (!is_object($expr)) {
            throw new InvalidArgumentException('$expr must be string/object/null');
        }

        if ($expr instanceof Node\Scalar) {
            $scalar = new \PHPSA\Compiler\Scalar($this->context, $this->eventManager);
            return $scalar->compile($expr);
        }

        $this->eventManager->fire(
            ExpressionBeforeCompile::EVENT_NAME,
            new ExpressionBeforeCompile(
                $expr,
                $this->context
            )
        );

        $className = get_class($expr);
        switch ($className) {
            case Node\Arg::class:
                /**
                 * @todo Better compile
                 */
                return $this->compile($expr->value);

            /**
             * Names
             */
            case Node\Name::class:
                return $this->getNodeName($expr);
            case Node\Name\FullyQualified::class:
                return $this->getFullyQualifiedNodeName($expr);
        }

        $expressionCompiler = $this->factory($expr);
        if (!$expressionCompiler) {
            $this->context->debug("Expression compiler is not implemented for {$className}");
            return new CompiledExpression(CompiledExpression::UNIMPLEMENTED);
        }

        $result = $expressionCompiler->pass($expr, $this->context);
        if (!$result instanceof CompiledExpression) {
            throw new RuntimeException('Please return CompiledExpression from ' . get_class($expressionCompiler));
        }

        return $result;
    }

    /**
     * @todo Implement - does not belong in this file
     *
     * @param Node\Stmt\Property $st
    public function passProperty(Node\Stmt\Property $st)
    {
        $docBlock = $st->getDocComment();
        if (!$docBlock) {
            return new CompiledExpression();
        }

        $phpdoc = DocBlockFactory::createInstance()->create($docBlock->getText());

        $varTags = $phpdoc->getTagsByName('var');
        if ($varTags) {
            $varTag = current($varTags);

            $typeResolver = new \phpDocumentor\Reflection\TypeResolver();

            try {
                $type = $typeResolver->resolve($varTag->getType());
            } catch (\InvalidArgumentException $e) {
                return new CompiledExpression();
            }

            if ($type) {
                switch (get_class($type)) {
                    case \phpDocumentor\Reflection\Types\Object_::class:
                        return new CompiledExpression(
                            CompiledExpression::OBJECT
                        );
                    case \phpDocumentor\Reflection\Types\Integer::class:
                        return new CompiledExpression(
                            CompiledExpression::INTEGER
                        );
                    case \phpDocumentor\Reflection\Types\String_::class:
                        return new CompiledExpression(
                            CompiledExpression::STRING
                        );
                    case \phpDocumentor\Reflection\Types\Float_::class:
                        return new CompiledExpression(
                            CompiledExpression::DOUBLE
                        );
                    case \phpDocumentor\Reflection\Types\Null_::class:
                        return new CompiledExpression(
                            CompiledExpression::NULL
                        );
                    case \phpDocumentor\Reflection\Types\Boolean::class:
                        return new CompiledExpression(
                            CompiledExpression::BOOLEAN
                        );
                }
            }
        }

        return new CompiledExpression();
    }
*/


    /**
     * @param Node\Expr\Variable $expr
     * @param mixed $value
     * @param int $type
     * @return CompiledExpression
     */
    public function declareVariable(Node\Expr\Variable $expr, $value = null, $type = CompiledExpression::UNKNOWN)
    {
        $variable = $this->context->getSymbol($expr->name);
        if ($variable) {
            $variable->modify($type, $value);
        } else {
            $variable = new Variable($expr->name, $value, $type, $this->context->getCurrentBranch());
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
            $this->context->addVariable($variable);
        }

        return new CompiledExpression($variable->getType(), $variable->getValue(), $variable);
    }

    /**
     * @param Node\Name\FullyQualified $expr
     * @return CompiledExpression
     */
    public function getFullyQualifiedNodeName(Node\Name\FullyQualified $expr)
    {
        $compiler = $this->context->getApplication()->compiler;

        $classDefinition = $compiler->getClass($expr->toString());
        if ($classDefinition) {
            return new CompiledExpression(
                CompiledExpression::OBJECT,
                $classDefinition
            );
        }

        $this->context->debug('Unimplemented FullyQualified', $expr);
        return new CompiledExpression();
    }

    /**
     * @param Node\Name $expr
     * @return CompiledExpression
     */
    public function getNodeName(Node\Name $expr)
    {
        $nodeString = $expr->toString();
        if ($nodeString === 'null') {
            return new CompiledExpression(CompiledExpression::NULL);
        }

        if (in_array($nodeString, ['parent'], true)) {
            /** @var ClassDefinition $scope */
            $scope = $this->context->scope;
            assert($scope instanceof ClassDefinition);

            if ($scope->getExtendsClass()) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
                $definition = $scope->getExtendsClassDefinition();
                if ($definition) {
                    return new CompiledExpression(CompiledExpression::OBJECT, $definition);
                }
            } else {
                $this->context->notice(
                    'language_error',
                    'Cannot access parent:: when current class scope has no parent',
                    $expr
                );
            }
        }

        if (in_array($nodeString, ['self', 'static'], true)) {
            return CompiledExpression::fromZvalValue($this->context->scope);
        }

        if (defined($nodeString)) {
            return CompiledExpression::fromZvalValue(constant($expr));
        }

        return new CompiledExpression(CompiledExpression::STRING, $expr->toString());
    }
}


1			<?php
2			/**
3			* @author Patsura Dmitry https://github.com/ovr <[email protected]>
4			*/
5
6			namespace PHPSA\Compiler;
7
8			use InvalidArgumentException;
9			use phpDocumentor\Reflection\DocBlockFactory;
10			use PHPSA\CompiledExpression;
11			use PHPSA\Compiler\Event\ExpressionBeforeCompile;
12			use PHPSA\Context;
13			use PhpParser\Node;
14			use PHPSA\Definition\ClassDefinition;
15			use PHPSA\Exception\RuntimeException;
16			use PHPSA\Variable;
17			use PHPSA\Compiler\Expression\AbstractExpressionCompiler;
18			use Webiny\Component\EventManager\EventManager;
19
20			class Expression
			0 ignored issues – show Complexity introduced 2016-02-06 15:22 UTC by Report Bug Copy Issue Report This class has a complexity of 104 which exceeds the configured maximum of 50. The class complexity is the sum of the complexity of all methods. A very high value is usually an indication that your class does not follow the single reponsibility principle and does more than one job. Some resources for further reading: Single Reponsibility Principle Open/Closed Principle You can also find more detailed suggestions for refactoring in the “Code” section of your repository. Loading history...
21			{
22			/**
23			* @var Context
24			*/
25			protected $context;
26
27			/**
28			* @var EventManager
29			*/
30			protected $eventManager;
31
32			/**
33			* @param Context $context
34			*/
35			public function __construct(Context $context, EventManager $eventManager)
36			{
37			$this->context = $context;
38			$this->eventManager = $eventManager;
39			}
40
41			/**
42			* @param $expr
43			* @return ExpressionCompilerInterface\|AbstractExpressionCompiler
44			*/
45			protected function factory($expr)
46			{
47			switch (get_class($expr)) {
48			/**
49			* Call(s)
50			*/
51			case Node\Expr\MethodCall::class:
52			return new Expression\MethodCall();
53			case Node\Expr\FuncCall::class:
54			return new Expression\FunctionCall();
55			case Node\Expr\StaticCall::class:
56			return new Expression\StaticCall();
57			/**
58			* Operators
59			*/
60			case Node\Expr\New_::class:
61			return new Expression\Operators\NewOp();
62			case Node\Expr\Instanceof_::class:
63			return new Expression\Operators\InstanceOfOp();
64			/**
65			* AssignOp
66			*/
67			case Node\Expr\AssignOp\Pow::class:
68			return new Expression\AssignOp\Pow();
69			case Node\Expr\AssignOp\Plus::class:
70			return new Expression\AssignOp\Plus();
71			case Node\Expr\AssignOp\Minus::class:
72			return new Expression\AssignOp\Minus();
73			case Node\Expr\AssignOp\Mul::class:
74			return new Expression\AssignOp\Mul();
75			case Node\Expr\AssignOp\Div::class:
76			return new Expression\AssignOp\Div();
77			case Node\Expr\AssignOp\Mod::class:
78			return new Expression\AssignOp\Mod();
79			case Node\Expr\AssignOp\BitwiseOr::class:
80			return new Expression\AssignOp\BitwiseOr();
81			case Node\Expr\AssignOp\BitwiseAnd::class:
82			return new Expression\AssignOp\BitwiseAnd();
83			case Node\Expr\AssignOp\BitwiseXor::class:
84			return new Expression\AssignOp\BitwiseXor();
85			case Node\Expr\AssignOp\Concat::class:
86			return new Expression\AssignOp\Concat();
87			case Node\Expr\AssignOp\ShiftLeft::class:
88			return new Expression\AssignOp\ShiftLeft();
89			case Node\Expr\AssignOp\ShiftRight::class:
90			return new Expression\AssignOp\ShiftRight();
91
92			/**
93			* BinaryOp
94			*/
95			case Node\Expr\BinaryOp\Identical::class:
96			return new Expression\BinaryOp\Identical();
97			case Node\Expr\BinaryOp\Concat::class:
98			return new Expression\Operators\Concat();
99			case Node\Expr\BinaryOp\NotIdentical::class:
100			return new Expression\BinaryOp\NotIdentical();
101			case Node\Expr\BinaryOp\Equal::class:
102			return new Expression\BinaryOp\Equal();
103			case Node\Expr\BinaryOp\NotEqual::class:
104			return new Expression\BinaryOp\NotEqual();
105			case Node\Expr\BinaryOp\Spaceship::class:
106			return new Expression\BinaryOp\SpaceShip();
107			case Node\Expr\BinaryOp\Coalesce::class:
108			return new Expression\BinaryOp\Coalesce();
109
110			/**
111			* @link http://php.net/manual/en/language.operators.increment.php
112			*/
113			case Node\Expr\PostInc::class:
114			return new Expression\Operators\PostInc();
115			case Node\Expr\PostDec::class:
116			return new Expression\Operators\PostDec();
117			case Node\Expr\PreInc::class:
118			return new Expression\Operators\PreInc();
119			case Node\Expr\PreDec::class:
120			return new Expression\Operators\PreDec();
121			/**
122			* Arithmetical
123			*/
124			case Node\Expr\BinaryOp\Div::class:
125			return new Expression\Operators\Arithmetical\Div();
126			case Node\Expr\BinaryOp\Plus::class:
127			return new Expression\Operators\Arithmetical\Plus();
128			case Node\Expr\BinaryOp\Minus::class:
129			return new Expression\Operators\Arithmetical\Minus();
130			case Node\Expr\BinaryOp\Mul::class:
131			return new Expression\Operators\Arithmetical\Mul();
132			case Node\Expr\BinaryOp\Mod::class:
133			return new Expression\Operators\Arithmetical\Mod();
134			case Node\Expr\BinaryOp\Pow::class:
135			return new Expression\Operators\Arithmetical\Pow();
136
137			/**
138			* Bitwise
139			* @link http://php.net/manual/ru/language.operators.bitwise.php
140			*/
141			case Node\Expr\BinaryOp\BitwiseOr::class:
142			return new Expression\Operators\Bitwise\BitwiseOr();
143			case Node\Expr\BinaryOp\BitwiseXor::class:
144			return new Expression\Operators\Bitwise\BitwiseXor();
145			case Node\Expr\BinaryOp\BitwiseAnd::class:
146			return new Expression\Operators\Bitwise\BitwiseAnd();
147			case Node\Expr\BinaryOp\ShiftRight::class:
148			return new Expression\Operators\Bitwise\ShiftRight();
149			case Node\Expr\BinaryOp\ShiftLeft::class:
150			return new Expression\Operators\Bitwise\ShiftLeft();
151			case Node\Expr\BitwiseNot::class:
152			return new Expression\Operators\Bitwise\BitwiseNot();
153			/**
154			* Logical
155			*/
156			case Node\Expr\BinaryOp\BooleanOr::class:
157			return new Expression\Operators\Logical\BooleanOr();
158			case Node\Expr\BinaryOp\BooleanAnd::class:
159			return new Expression\Operators\Logical\BooleanAnd();
160			case Node\Expr\BooleanNot::class:
161			return new Expression\Operators\Logical\BooleanNot();
162			case Node\Expr\BinaryOp\LogicalAnd::class:
163			return new Expression\Operators\Logical\LogicalAnd();
164			case Node\Expr\BinaryOp\LogicalOr::class:
165			return new Expression\Operators\Logical\LogicalOr();
166			case Node\Expr\BinaryOp\LogicalXor::class:
167			return new Expression\Operators\Logical\LogicalXor();
168
169			/**
170			* Comparison
171			*/
172			case Node\Expr\BinaryOp\Greater::class:
173			return new Expression\Operators\Comparison\Greater();
174			case Node\Expr\BinaryOp\GreaterOrEqual::class:
175			return new Expression\Operators\Comparison\GreaterOrEqual();
176			case Node\Expr\BinaryOp\Smaller::class:
177			return new Expression\Operators\Comparison\Smaller();
178			case Node\Expr\BinaryOp\SmallerOrEqual::class:
179			return new Expression\Operators\Comparison\SmallerOrEqual();
180
181			/**
182			* Casts
183			*/
184			case Node\Expr\Cast\Array_::class:
185			return new Expression\Casts\ArrayCast();
186			case Node\Expr\Cast\Bool_::class:
187			return new Expression\Casts\BoolCast();
188			case Node\Expr\Cast\Int_::class:
189			return new Expression\Casts\IntCast();
190			case Node\Expr\Cast\Double::class:
191			return new Expression\Casts\DoubleCast();
192			case Node\Expr\Cast\Object_::class:
193			return new Expression\Casts\ObjectCast();
194			case Node\Expr\Cast\String_::class:
195			return new Expression\Casts\StringCast();
196			case Node\Expr\Cast\Unset_::class:
197			return new Expression\Casts\UnsetCast();
198
199
200			/**
201			* Other
202			*/
203			case Node\Expr\Array_::class:
204			return new Expression\ArrayOp();
205			case Node\Expr\Assign::class:
206			return new Expression\Assign();
207			case Node\Expr\AssignRef::class:
208			return new Expression\AssignRef();
209			case Node\Expr\Closure::class:
210			return new Expression\Closure();
211			case Node\Expr\ConstFetch::class:
212			return new Expression\ConstFetch();
213			case Node\Expr\ClassConstFetch::class:
214			return new Expression\ClassConstFetch();
215			case Node\Expr\PropertyFetch::class:
216			return new Expression\PropertyFetch();
217			case Node\Expr\StaticPropertyFetch::class:
218			return new Expression\StaticPropertyFetch();
219			case Node\Expr\ArrayDimFetch::class:
220			return new Expression\ArrayDimFetch();
221			case Node\Expr\UnaryMinus::class:
222			return new Expression\Operators\UnaryMinus();
223			case Node\Expr\UnaryPlus::class:
224			return new Expression\Operators\UnaryPlus();
225			case Node\Expr\Exit_::class:
226			return new Expression\ExitOp();
227			case Node\Expr\Isset_::class:
228			return new Expression\IssetOp();
229			case Node\Expr\Print_::class:
230			return new Expression\PrintOp();
231			case Node\Expr\Empty_::class:
232			return new Expression\EmptyOp();
233			case Node\Expr\Eval_::class:
234			return new Expression\EvalOp();
235			case Node\Expr\ShellExec::class:
236			return new Expression\ShellExec();
237			case Node\Expr\ErrorSuppress::class:
238			return new Expression\ErrorSuppress();
239			case Node\Expr\Include_::class:
240			return new Expression\IncludeOp();
241			case Node\Expr\Clone_::class:
242			return new Expression\CloneOp();
243			case Node\Expr\Ternary::class:
244			return new Expression\Ternary();
245			case Node\Expr\Yield_::class:
246			return new Expression\YieldOp();
247			case Node\Expr\YieldFrom::class:
248			return new Expression\YieldFrom();
249			case Node\Expr\Variable::class:
250			return new Expression\Variable();
251			}
252
253			return false;
254			}
255
256			/**
257			* @param object\|string $expr
258			* @throws InvalidArgumentException when $expr is not string/object/null
259			* @throws RuntimeException when compiler class does not return a CompiledExpression
260			* @return CompiledExpression
261			*/
262			public function compile($expr)
263			{
264			if (is_string($expr)) {
265			return new CompiledExpression(CompiledExpression::STRING, $expr);
266			}
267
268			if (is_null($expr)) {
269			return new CompiledExpression(CompiledExpression::NULL);
270			}
271
272			if (!is_object($expr)) {
273			throw new InvalidArgumentException('$expr must be string/object/null');
274			}
275
276			if ($expr instanceof Node\Scalar) {
277			$scalar = new \PHPSA\Compiler\Scalar($this->context, $this->eventManager);
278			return $scalar->compile($expr);
279			}
280
281			$this->eventManager->fire(
282			ExpressionBeforeCompile::EVENT_NAME,
283			new ExpressionBeforeCompile(
284			$expr,
285			$this->context
286			)
287			);
288
289			$className = get_class($expr);
290			switch ($className) {
291			case Node\Arg::class:
292			/**
293			* @todo Better compile
294			*/
295			return $this->compile($expr->value);
296
297			/**
298			* Names
299			*/
300			case Node\Name::class:
301			return $this->getNodeName($expr);
302			case Node\Name\FullyQualified::class:
303			return $this->getFullyQualifiedNodeName($expr);
304			}
305
306			$expressionCompiler = $this->factory($expr);
307			if (!$expressionCompiler) {
308			$this->context->debug("Expression compiler is not implemented for {$className}");
309			return new CompiledExpression(CompiledExpression::UNIMPLEMENTED);
310			}
311
312			$result = $expressionCompiler->pass($expr, $this->context);
313			if (!$result instanceof CompiledExpression) {
314			throw new RuntimeException('Please return CompiledExpression from ' . get_class($expressionCompiler));
315			}
316
317			return $result;
318			}
319
320			/**
321			* @todo Implement - does not belong in this file
322			*
323			* @param Node\Stmt\Property $st
324			public function passProperty(Node\Stmt\Property $st)
325			{
326			$docBlock = $st->getDocComment();
327			if (!$docBlock) {
328			return new CompiledExpression();
329			}
330
331			$phpdoc = DocBlockFactory::createInstance()->create($docBlock->getText());
332
333			$varTags = $phpdoc->getTagsByName('var');
334			if ($varTags) {
335			$varTag = current($varTags);
336
337			$typeResolver = new \phpDocumentor\Reflection\TypeResolver();
338
339			try {
340			$type = $typeResolver->resolve($varTag->getType());
341			} catch (\InvalidArgumentException $e) {
342			return new CompiledExpression();
343			}
344
345			if ($type) {
346			switch (get_class($type)) {
347			case \phpDocumentor\Reflection\Types\Object_::class:
348			return new CompiledExpression(
349			CompiledExpression::OBJECT
350			);
351			case \phpDocumentor\Reflection\Types\Integer::class:
352			return new CompiledExpression(
353			CompiledExpression::INTEGER
354			);
355			case \phpDocumentor\Reflection\Types\String_::class:
356			return new CompiledExpression(
357			CompiledExpression::STRING
358			);
359			case \phpDocumentor\Reflection\Types\Float_::class:
360			return new CompiledExpression(
361			CompiledExpression::DOUBLE
362			);
363			case \phpDocumentor\Reflection\Types\Null_::class:
364			return new CompiledExpression(
365			CompiledExpression::NULL
366			);
367			case \phpDocumentor\Reflection\Types\Boolean::class:
368			return new CompiledExpression(
369			CompiledExpression::BOOLEAN
370			);
371			}
372			}
373			}
374
375			return new CompiledExpression();
376			}
377			*/
378
379
380			/**
381			* @param Node\Expr\Variable $expr
382			* @param mixed $value
383			* @param int $type
384			* @return CompiledExpression
385			*/
386			public function declareVariable(Node\Expr\Variable $expr, $value = null, $type = CompiledExpression::UNKNOWN)
387			{
388			$variable = $this->context->getSymbol($expr->name);
389			if ($variable) {
390			$variable->modify($type, $value);
391			} else {
392			$variable = new Variable($expr->name, $value, $type, $this->context->getCurrentBranch());
			0 ignored issues – show Bug introduced 2016-10-03 13:50 UTC by Report Bug Copy Issue Report It seems like `$expr->name` can also be of type `object<PhpParser\Node\Expr>`; however, `PHPSA\Variable::__construct()` does only seem to accept `string`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
393			$this->context->addVariable($variable);
394			}
395
396			return new CompiledExpression($variable->getType(), $variable->getValue(), $variable);
397			}
398
399			/**
400			* @param Node\Name\FullyQualified $expr
401			* @return CompiledExpression
402			*/
403			public function getFullyQualifiedNodeName(Node\Name\FullyQualified $expr)
404			{
405			$compiler = $this->context->getApplication()->compiler;
406
407			$classDefinition = $compiler->getClass($expr->toString());
408			if ($classDefinition) {
409			return new CompiledExpression(
410			CompiledExpression::OBJECT,
411			$classDefinition
412			);
413			}
414
415			$this->context->debug('Unimplemented FullyQualified', $expr);
416			return new CompiledExpression();
417			}
418
419			/**
420			* @param Node\Name $expr
421			* @return CompiledExpression
422			*/
423			public function getNodeName(Node\Name $expr)
424			{
425			$nodeString = $expr->toString();
426			if ($nodeString === 'null') {
427			return new CompiledExpression(CompiledExpression::NULL);
428			}
429
430			if (in_array($nodeString, ['parent'], true)) {
431			/** @var ClassDefinition $scope */
432			$scope = $this->context->scope;
433			assert($scope instanceof ClassDefinition);
434
435			if ($scope->getExtendsClass()) {
			0 ignored issues – show Bug Best Practice introduced 2016-01-18 21:09 UTC by Report Bug Copy Issue Report The expression `$scope->getExtendsClass()` of type `string\|null` is loosely compared to `true`; this is ambiguous if the string can be empty. You might want to explicitly use `!== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
436			$definition = $scope->getExtendsClassDefinition();
437			if ($definition) {
438			return new CompiledExpression(CompiledExpression::OBJECT, $definition);
439			}
440			} else {
441			$this->context->notice(
442			'language_error',
443			'Cannot access parent:: when current class scope has no parent',
444			$expr
445			);
446			}
447			}
448
449			if (in_array($nodeString, ['self', 'static'], true)) {
450			return CompiledExpression::fromZvalValue($this->context->scope);
451			}
452
453			if (defined($nodeString)) {
454			return CompiledExpression::fromZvalValue(constant($expr));
455			}
456
457			return new CompiledExpression(CompiledExpression::STRING, $expr->toString());
458			}
459			}
460

ovr / phpsa

Expression::declareVariable() A last analyzed 2019-02-27 06:44 UTC

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Expression::declareVariable() A
last analyzed 2019-02-27 06:44 UTC