src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php

Summary

Maintainability
F
5 days
Test Coverage

File VariableTrackerVisitor.php has 761 lines of code (exceeds 250 allowed). Consider refactoring.
Open

<?php

declare(strict_types=1);

namespace Phan\Plugin\Internal\VariableTracker;
Severity: Major
Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 1 day to fix

    VariableTrackerVisitor has 56 functions (exceeds 20 allowed). Consider refactoring.
    Open

    final class VariableTrackerVisitor extends AnalysisVisitor
    {
        /**
         * This shared graph instance maps definitions of variables (in a function-like context)
         * to the uses of that variable.
    Severity: Major
    Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 1 day to fix

      The class VariableTrackerVisitor has an overall complexity of 190 which is very high. The configured complexity threshold is 50.
      Open

      final class VariableTrackerVisitor extends AnalysisVisitor
      {
          /**
           * This shared graph instance maps definitions of variables (in a function-like context)
           * to the uses of that variable.

      The class VariableTrackerVisitor has 39 public methods. Consider refactoring VariableTrackerVisitor to keep number of public methods under 10.
      Open

      final class VariableTrackerVisitor extends AnalysisVisitor
      {
          /**
           * This shared graph instance maps definitions of variables (in a function-like context)
           * to the uses of that variable.

      TooManyPublicMethods

      Since: 0.1

      A class with too many public methods is probably a good suspect for refactoring, in order to reduce its complexity and find a way to have more fine grained objects.

      By default it ignores methods starting with 'get' or 'set'.

      Example

      Source https://phpmd.org/rules/codesize.html#toomanypublicmethods

      The class VariableTrackerVisitor has 51 non-getter- and setter-methods. Consider refactoring VariableTrackerVisitor to keep number of methods under 25.
      Open

      final class VariableTrackerVisitor extends AnalysisVisitor
      {
          /**
           * This shared graph instance maps definitions of variables (in a function-like context)
           * to the uses of that variable.

      TooManyMethods

      Since: 0.1

      A class with too many methods is probably a good suspect for refactoring, in order to reduce its complexity and find a way to have more fine grained objects.

      By default it ignores methods starting with 'get' or 'set'.

      The default was changed from 10 to 25 in PHPMD 2.3.

      Example

      Source https://phpmd.org/rules/codesize.html#toomanymethods

      Function visitSwitchList has a Cognitive Complexity of 20 (exceeds 5 allowed). Consider refactoring.
      Open

          public function visitSwitchList(Node $node): VariableTrackingScope
          {
              $outer_scope = $this->scope;
      
              $inner_scope_list = [];
      Severity: Minor
      Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 2 hrs to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Function analyzeDimAssignmentTarget has a Cognitive Complexity of 16 (exceeds 5 allowed). Consider refactoring.
      Open

          private function analyzeDimAssignmentTarget(Node $node): VariableTrackingScope
          {
              // Treat $y in `$x[$y] = $z;` as a usage of $y
              $this->scope = $this->analyzeWhenValidNode($this->scope, $node->children['dim']);
              $expr = $node->children['expr'];
      Severity: Minor
      Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 2 hrs to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Method visitSwitchList has 40 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

          public function visitSwitchList(Node $node): VariableTrackingScope
          {
              $outer_scope = $this->scope;
      
              $inner_scope_list = [];
      Severity: Minor
      Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 1 hr to fix

        Function visitIf has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.
        Open

            public function visitIf(Node $node): VariableTrackingScope
            {
                $outer_scope = $this->scope;
        
                $inner_scope_list = [];
        Severity: Minor
        Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 1 hr to fix

        Cognitive Complexity

        Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

        A method's cognitive complexity is based on a few simple rules:

        • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
        • Code is considered more complex for each "break in the linear flow of the code"
        • Code is considered more complex when "flow breaking structures are nested"

        Further reading

        Method visitFor has 34 lines of code (exceeds 25 allowed). Consider refactoring.
        Open

            public function visitFor(Node $node): VariableTrackingScope
            {
                $this->checkIsSideEffectFreeLoopNode($node);
        
                $top_level_statement = $this->top_level_statement;
        Severity: Minor
        Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 1 hr to fix

          Method visitIf has 30 lines of code (exceeds 25 allowed). Consider refactoring.
          Open

              public function visitIf(Node $node): VariableTrackingScope
              {
                  $outer_scope = $this->scope;
          
                  $inner_scope_list = [];
          Severity: Minor
          Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 1 hr to fix

            Function visitClosure has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.
            Open

                public function visitClosure(Node $node): VariableTrackingScope
                {
                    foreach ($node->children['uses']->children ?? [] as $closure_use) {
                        if (!($closure_use instanceof Node)) {
                            continue;
            Severity: Minor
            Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 1 hr to fix

            Cognitive Complexity

            Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

            A method's cognitive complexity is based on a few simple rules:

            • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
            • Code is considered more complex for each "break in the linear flow of the code"
            • Code is considered more complex when "flow breaking structures are nested"

            Further reading

            Method analyzeAssignmentTarget has 27 lines of code (exceeds 25 allowed). Consider refactoring.
            Open

                private function analyzeAssignmentTarget($node, bool $is_ref, $const_expr): VariableTrackingScope
                {
                    // TODO: Push onto the node list?
                    if (!($node instanceof Node)) {
                        return $this->scope;
            Severity: Minor
            Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 1 hr to fix

              Method visitAssignOp has 26 lines of code (exceeds 25 allowed). Consider refactoring.
              Open

                  public function visitAssignOp(Node $node): VariableTrackingScope
                  {
                      $expr = $node->children['expr'];
                      if ($expr instanceof Node) {
                          $this->scope = $this->analyze($this->scope, $expr);
              Severity: Minor
              Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 1 hr to fix

                Function visitFor has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
                Open

                    public function visitFor(Node $node): VariableTrackingScope
                    {
                        $this->checkIsSideEffectFreeLoopNode($node);
                
                        $top_level_statement = $this->top_level_statement;
                Severity: Minor
                Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 55 mins to fix

                Cognitive Complexity

                Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                A method's cognitive complexity is based on a few simple rules:

                • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                • Code is considered more complex for each "break in the linear flow of the code"
                • Code is considered more complex when "flow breaking structures are nested"

                Further reading

                Function visitVar has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
                Open

                    public function visitVar(Node $node): VariableTrackingScope
                    {
                        $name = $node->children['name'];
                        if (\is_string($name)) {
                            self::$variable_graph->recordVariableUsage($name, $node, $this->scope);
                Severity: Minor
                Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 45 mins to fix

                Cognitive Complexity

                Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                A method's cognitive complexity is based on a few simple rules:

                • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                • Code is considered more complex for each "break in the linear flow of the code"
                • Code is considered more complex when "flow breaking structures are nested"

                Further reading

                Function analyzeArrayAssignmentTarget has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
                Open

                    private function analyzeArrayAssignmentTarget(Node $node, $const_expr): VariableTrackingScope
                    {
                        foreach ($node->children as $elem_node) {
                            if (!($elem_node instanceof Node)) {
                                continue;
                Severity: Minor
                Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 35 mins to fix

                Cognitive Complexity

                Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                A method's cognitive complexity is based on a few simple rules:

                • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                • Code is considered more complex for each "break in the linear flow of the code"
                • Code is considered more complex when "flow breaking structures are nested"

                Further reading

                Function analyzePropAssignmentTarget has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
                Open

                    private function analyzePropAssignmentTarget(Node $node): VariableTrackingScope
                    {
                        // Treat $y in `$x->$y = $z;` as a usage of $y
                        $this->scope = $this->analyzeWhenValidNode($this->scope, $node->children['prop']);
                        $expr = $node->children['expr'];
                Severity: Minor
                Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 35 mins to fix

                Cognitive Complexity

                Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                A method's cognitive complexity is based on a few simple rules:

                • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                • Code is considered more complex for each "break in the linear flow of the code"
                • Code is considered more complex when "flow breaking structures are nested"

                Further reading

                Function hasUnknownTypeLoopNodeKinds has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
                Open

                    private static function hasUnknownTypeLoopNodeKinds(Node $node): bool
                    {
                        switch ($node->kind) {
                            case ast\AST_CLOSURE:
                            case ast\AST_ARROW_FUNC:
                Severity: Minor
                Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 35 mins to fix

                Cognitive Complexity

                Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                A method's cognitive complexity is based on a few simple rules:

                • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                • Code is considered more complex for each "break in the linear flow of the code"
                • Code is considered more complex when "flow breaking structures are nested"

                Further reading

                Function analyzeIncDec has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
                Open

                    private function analyzeIncDec(Node $node): VariableTrackingScope
                    {
                        $var_node = $node->children['var'];
                        if ($var_node instanceof Node && $var_node->kind === ast\AST_VAR) {
                            $name = $var_node->children['name'];
                Severity: Minor
                Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 35 mins to fix

                Cognitive Complexity

                Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                A method's cognitive complexity is based on a few simple rules:

                • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                • Code is considered more complex for each "break in the linear flow of the code"
                • Code is considered more complex when "flow breaking structures are nested"

                Further reading

                Avoid too many return statements within this method.
                Open

                        return $this->scope;
                Severity: Major
                Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 30 mins to fix

                  Avoid too many return statements within this method.
                  Open

                                  return $this->analyze($this->scope, $var_node);
                  Severity: Major
                  Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 30 mins to fix

                    Avoid too many return statements within this method.
                    Open

                            return $this->scope;
                    Severity: Major
                    Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 30 mins to fix

                      Avoid too many return statements within this method.
                      Open

                                      return $this->analyzeDimAssignmentTarget($node);
                      Severity: Major
                      Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 30 mins to fix

                        Avoid too many return statements within this method.
                        Open

                                        return $this->analyzePropAssignmentTarget($node);
                        Severity: Major
                        Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 30 mins to fix

                          Avoid too many return statements within this method.
                          Open

                                          return $this->analyze($this->scope, $node);
                          Severity: Major
                          Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 30 mins to fix

                            Function visitCall has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
                            Open

                                public function visitCall(Node $node): VariableTrackingScope
                                {
                                    if (isset($node->dynamic_var_uses)) {
                                        $this->handleDynamicVarUses($node, $node->dynamic_var_uses);
                                    }
                            Severity: Minor
                            Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 25 mins to fix

                            Cognitive Complexity

                            Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                            A method's cognitive complexity is based on a few simple rules:

                            • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                            • Code is considered more complex for each "break in the linear flow of the code"
                            • Code is considered more complex when "flow breaking structures are nested"

                            Further reading

                            Function checkIsSideEffectFreeLoopNode has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
                            Open

                                private function checkIsSideEffectFreeLoopNode(Node $node): void
                                {
                                    // @phan-suppress-next-line PhanUndeclaredProperty
                                    if (isset($node->has_loop_body_without_side_effects)) {
                                        $this->side_effect_free_loop_nodes[] = $node;
                            Severity: Minor
                            Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 25 mins to fix

                            Cognitive Complexity

                            Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                            A method's cognitive complexity is based on a few simple rules:

                            • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                            • Code is considered more complex for each "break in the linear flow of the code"
                            • Code is considered more complex when "flow breaking structures are nested"

                            Further reading

                            Function markVariablesAsReference has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
                            Open

                                private static function markVariablesAsReference(Node $expr): void
                                {
                                    while (\in_array($expr->kind, [ast\AST_DIM, ast\AST_PROP], true)) {
                                        $expr = $expr->children['expr'];
                                        if (!$expr instanceof Node) {
                            Severity: Minor
                            Found in src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php - About 25 mins to fix

                            Cognitive Complexity

                            Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                            A method's cognitive complexity is based on a few simple rules:

                            • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                            • Code is considered more complex for each "break in the linear flow of the code"
                            • Code is considered more complex when "flow breaking structures are nested"

                            Further reading

                            The class VariableTrackerVisitor has 1150 lines of code. Current threshold is 1000. Avoid really long classes.
                            Open

                            final class VariableTrackerVisitor extends AnalysisVisitor
                            {
                                /**
                                 * This shared graph instance maps definitions of variables (in a function-like context)
                                 * to the uses of that variable.

                            The method hasUnknownTypeLoopNodeKinds() has a Cyclomatic Complexity of 15. The configured cyclomatic complexity threshold is 10.
                            Open

                                private static function hasUnknownTypeLoopNodeKinds(Node $node): bool
                                {
                                    switch ($node->kind) {
                                        case ast\AST_CLOSURE:
                                        case ast\AST_ARROW_FUNC:

                            CyclomaticComplexity

                            Since: 0.1

                            Complexity is determined by the number of decision points in a method plus one for the method entry. The decision points are 'if', 'while', 'for', and 'case labels'. Generally, 1-4 is low complexity, 5-7 indicates moderate complexity, 8-10 is high complexity, and 11+ is very high complexity.

                            Example

                            // Cyclomatic Complexity = 11
                            class Foo {
                            1   public function example() {
                            2       if ($a == $b) {
                            3           if ($a1 == $b1) {
                                            fiddle();
                            4           } elseif ($a2 == $b2) {
                                            fiddle();
                                        } else {
                                            fiddle();
                                        }
                            5       } elseif ($c == $d) {
                            6           while ($c == $d) {
                                            fiddle();
                                        }
                            7        } elseif ($e == $f) {
                            8           for ($n = 0; $n < $h; $n++) {
                                            fiddle();
                                        }
                                    } else {
                                        switch ($z) {
                            9               case 1:
                                                fiddle();
                                                break;
                            10              case 2:
                                                fiddle();
                                                break;
                            11              case 3:
                                                fiddle();
                                                break;
                                            default:
                                                fiddle();
                                                break;
                                        }
                                    }
                                }
                            }

                            Source https://phpmd.org/rules/codesize.html#cyclomaticcomplexity

                            The method visitSwitchList() has a Cyclomatic Complexity of 12. The configured cyclomatic complexity threshold is 10.
                            Open

                                public function visitSwitchList(Node $node): VariableTrackingScope
                                {
                                    $outer_scope = $this->scope;
                            
                                    $inner_scope_list = [];

                            CyclomaticComplexity

                            Since: 0.1

                            Complexity is determined by the number of decision points in a method plus one for the method entry. The decision points are 'if', 'while', 'for', and 'case labels'. Generally, 1-4 is low complexity, 5-7 indicates moderate complexity, 8-10 is high complexity, and 11+ is very high complexity.

                            Example

                            // Cyclomatic Complexity = 11
                            class Foo {
                            1   public function example() {
                            2       if ($a == $b) {
                            3           if ($a1 == $b1) {
                                            fiddle();
                            4           } elseif ($a2 == $b2) {
                                            fiddle();
                                        } else {
                                            fiddle();
                                        }
                            5       } elseif ($c == $d) {
                            6           while ($c == $d) {
                                            fiddle();
                                        }
                            7        } elseif ($e == $f) {
                            8           for ($n = 0; $n < $h; $n++) {
                                            fiddle();
                                        }
                                    } else {
                                        switch ($z) {
                            9               case 1:
                                                fiddle();
                                                break;
                            10              case 2:
                                                fiddle();
                                                break;
                            11              case 3:
                                                fiddle();
                                                break;
                                            default:
                                                fiddle();
                                                break;
                                        }
                                    }
                                }
                            }

                            Source https://phpmd.org/rules/codesize.html#cyclomaticcomplexity

                            The class VariableTrackerVisitor has a coupling between objects value of 15. Consider to reduce the number of dependencies under 13.
                            Open

                            final class VariableTrackerVisitor extends AnalysisVisitor
                            {
                                /**
                                 * This shared graph instance maps definitions of variables (in a function-like context)
                                 * to the uses of that variable.

                            CouplingBetweenObjects

                            Since: 1.1.0

                            A class with too many dependencies has negative impacts on several quality aspects of a class. This includes quality criteria like stability, maintainability and understandability

                            Example

                            class Foo {
                                /**
                                 * @var \foo\bar\X
                                 */
                                private $x = null;
                            
                                /**
                                 * @var \foo\bar\Y
                                 */
                                private $y = null;
                            
                                /**
                                 * @var \foo\bar\Z
                                 */
                                private $z = null;
                            
                                public function setFoo(\Foo $foo) {}
                                public function setBar(\Bar $bar) {}
                                public function setBaz(\Baz $baz) {}
                            
                                /**
                                 * @return \SplObjectStorage
                                 * @throws \OutOfRangeException
                                 * @throws \InvalidArgumentException
                                 * @throws \ErrorException
                                 */
                                public function process(\Iterator $it) {}
                            
                                // ...
                            }

                            Source https://phpmd.org/rules/design.html#couplingbetweenobjects

                            Similar blocks of code found in 2 locations. Consider refactoring.
                            Open

                                public function visitStmtList(Node $node): VariableTrackingScope
                                {
                                    $top_level_statement = $this->top_level_statement;
                                    foreach ($node->children as $child_node) {
                                        if (!($child_node instanceof Node)) {
                            src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php on lines 231..245

                            Duplicated Code

                            Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                            Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                            When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                            Tuning

                            This issue has a mass of 97.

                            We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                            The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                            If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                            See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                            Refactorings

                            Further Reading

                            Similar blocks of code found in 2 locations. Consider refactoring.
                            Open

                                public function visitExprList(Node $node): VariableTrackingScope
                                {
                                    $top_level_statement = $this->top_level_statement;
                                    foreach ($node->children as $child_node) {
                                        if (!($child_node instanceof Node)) {
                            src/Phan/Plugin/Internal/VariableTracker/VariableTrackerVisitor.php on lines 211..225

                            Duplicated Code

                            Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                            Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                            When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                            Tuning

                            This issue has a mass of 97.

                            We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                            The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                            If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                            See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                            Refactorings

                            Further Reading

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