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<?php declare(strict_types=1); |
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|
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namespace PhpParser; |
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|
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/** |
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* Modifiers used (as a bit mask) by various flags subnodes, for example on classes, functions, |
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* properties and constants. |
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*/ |
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final class Modifiers { |
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public const PUBLIC = 1; |
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public const PROTECTED = 2; |
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public const PRIVATE = 4; |
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public const STATIC = 8; |
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public const ABSTRACT = 16; |
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public const FINAL = 32; |
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public const READONLY = 64; |
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|
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public const VISIBILITY_MASK = 1 | 2 | 4; |
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|
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/** |
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* @internal |
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*/ |
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public static function verifyClassModifier(int $a, int $b): void { |
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if ($a & Modifiers::ABSTRACT && $b & Modifiers::ABSTRACT) { |
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throw new Error('Multiple abstract modifiers are not allowed'); |
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} |
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|
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if ($a & Modifiers::FINAL && $b & Modifiers::FINAL) { |
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throw new Error('Multiple final modifiers are not allowed'); |
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} |
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|
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if ($a & Modifiers::READONLY && $b & Modifiers::READONLY) { |
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throw new Error('Multiple readonly modifiers are not allowed'); |
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} |
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|
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if ($a & 48 && $b & 48) { |
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throw new Error('Cannot use the final modifier on an abstract class'); |
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} |
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} |
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|
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/** |
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* @internal |
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*/ |
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public static function verifyModifier(int $a, int $b): void { |
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if ($a & Modifiers::VISIBILITY_MASK && $b & Modifiers::VISIBILITY_MASK) { |
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throw new Error('Multiple access type modifiers are not allowed'); |
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} |
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|
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if ($a & Modifiers::ABSTRACT && $b & Modifiers::ABSTRACT) { |
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throw new Error('Multiple abstract modifiers are not allowed'); |
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} |
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|
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if ($a & Modifiers::STATIC && $b & Modifiers::STATIC) { |
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throw new Error('Multiple static modifiers are not allowed'); |
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} |
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|
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if ($a & Modifiers::FINAL && $b & Modifiers::FINAL) { |
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throw new Error('Multiple final modifiers are not allowed'); |
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} |
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|
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if ($a & Modifiers::READONLY && $b & Modifiers::READONLY) { |
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throw new Error('Multiple readonly modifiers are not allowed'); |
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} |
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|
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if ($a & 48 && $b & 48) { |
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throw new Error('Cannot use the final modifier on an abstract class member'); |
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} |
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} |
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} |
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