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src/Phan/AST/ArrowFunc.php

Summary

Maintainability
A
4 hrs
Test Coverage

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

    private function buildUses(Node $n): void
    {
        switch ($n->kind) {
            case ast\AST_VAR:
                $name = $n->children['name'];
Severity: Minor
Found in src/Phan/AST/ArrowFunc.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 buildUses has 37 lines of code (exceeds 25 allowed). Consider refactoring.
Open

    private function buildUses(Node $n): void
    {
        switch ($n->kind) {
            case ast\AST_VAR:
                $name = $n->children['name'];
Severity: Minor
Found in src/Phan/AST/ArrowFunc.php - About 1 hr to fix

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

        private function computeUses(Node $n): array
    {
        $stmts = $n->children['stmts'];
        if ($stmts instanceof Node) {  // should always be a node
            $this->buildUses($stmts);
    Severity: Minor
    Found in src/Phan/AST/ArrowFunc.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 method buildUses() has a Cyclomatic Complexity of 14. The configured cyclomatic complexity threshold is 10.
    Open

        private function buildUses(Node $n): void
    {
        switch ($n->kind) {
            case ast\AST_VAR:
                $name = $n->children['name'];
    Severity: Minor
    Found in src/Phan/AST/ArrowFunc.php by phpmd

    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

    Avoid variables with short names like $n. Configured minimum length is 3.
    Open

        public static function getUses(Node $n): array
    Severity: Minor
    Found in src/Phan/AST/ArrowFunc.php by phpmd

    ShortVariable

    Since: 0.2

    Detects when a field, local, or parameter has a very short name.

    Example

    class Something {
    private $q = 15; // VIOLATION - Field
    public static function main( array $as ) { // VIOLATION - Formal
        $r = 20 + $this->q; // VIOLATION - Local
        for (int $i = 0; $i < 10; $i++) { // Not a Violation (inside FOR)
            $r += $this->q;
        }
    }
}

    Source https://phpmd.org/rules/naming.html#shortvariable

    Avoid variables with short names like $n. Configured minimum length is 3.
    Open

        private function computeUses(Node $n): array
    Severity: Minor
    Found in src/Phan/AST/ArrowFunc.php by phpmd

    ShortVariable

    Since: 0.2

    Detects when a field, local, or parameter has a very short name.

    Example

    class Something {
    private $q = 15; // VIOLATION - Field
    public static function main( array $as ) { // VIOLATION - Formal
        $r = 20 + $this->q; // VIOLATION - Local
        for (int $i = 0; $i < 10; $i++) { // Not a Violation (inside FOR)
            $r += $this->q;
        }
    }
}

    Source https://phpmd.org/rules/naming.html#shortvariable

    Avoid variables with short names like $n. Configured minimum length is 3.
    Open

        private function recordUse($name, Node $n): void
    Severity: Minor
    Found in src/Phan/AST/ArrowFunc.php by phpmd

    ShortVariable

    Since: 0.2

    Detects when a field, local, or parameter has a very short name.

    Example

    class Something {
    private $q = 15; // VIOLATION - Field
    public static function main( array $as ) { // VIOLATION - Formal
        $r = 20 + $this->q; // VIOLATION - Local
        for (int $i = 0; $i < 10; $i++) { // Not a Violation (inside FOR)
            $r += $this->q;
        }
    }
}

    Source https://phpmd.org/rules/naming.html#shortvariable

    Avoid variables with short names like $n. Configured minimum length is 3.
    Open

        private function buildUses(Node $n): void
    Severity: Minor
    Found in src/Phan/AST/ArrowFunc.php by phpmd

    ShortVariable

    Since: 0.2

    Detects when a field, local, or parameter has a very short name.

    Example

    class Something {
    private $q = 15; // VIOLATION - Field
    public static function main( array $as ) { // VIOLATION - Formal
        $r = 20 + $this->q; // VIOLATION - Local
        for (int $i = 0; $i < 10; $i++) { // Not a Violation (inside FOR)
            $r += $this->q;
        }
    }
}

    Source https://phpmd.org/rules/naming.html#shortvariable

    Avoid variables with short names like $n. Configured minimum length is 3.
    Open

        public static function recordVariableExistsInOuterScope(Node $n, string $variable_name): void
    Severity: Minor
    Found in src/Phan/AST/ArrowFunc.php by phpmd

    ShortVariable

    Since: 0.2

    Detects when a field, local, or parameter has a very short name.

    Example

    class Something {
    private $q = 15; // VIOLATION - Field
    public static function main( array $as ) { // VIOLATION - Formal
        $r = 20 + $this->q; // VIOLATION - Local
        for (int $i = 0; $i < 10; $i++) { // Not a Violation (inside FOR)
            $r += $this->q;
        }
    }
}

    Source https://phpmd.org/rules/naming.html#shortvariable

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