70 lines
1.7 KiB
PHP
70 lines
1.7 KiB
PHP
<?php
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namespace nur\sery\wip\php\access;
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use ArrayAccess;
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use nur\sery\cl;
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/**
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* Class KeyAccess: accès à une valeur d'une clé dans un tableau
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*/
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class KeyAccess extends AbstractAccess {
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function __construct(&$dest, $key, ?array $params=null) {
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$this->dest =& $dest;
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$this->key = $key;
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$this->allowNull = $params["allow_null"] ?? true;
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$this->allowFalse = $params["allow_false"] ?? false;
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$this->allowEmpty = $params["allow_empty"] ?? true;
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}
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/** @var array|ArrayAccess */
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protected $dest;
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function reset(&$dest): self {
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$this->dest =& $dest;
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return $this;
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}
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/** @var int|string */
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protected $key;
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protected bool $allowNull;
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protected bool $allowFalse;
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protected bool $allowEmpty;
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function exists(): bool {
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$key = $this->key;
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if ($key === null) return false;
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return cl::has($this->dest, $key);
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}
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function available(): bool {
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if (!$this->exists()) return false;
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$value = cl::get($this->dest, $this->key);
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if ($value === null) return $this->allowNull;
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if ($value === false) return $this->allowFalse;
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if ($value === "") return $this->allowEmpty;
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return true;
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}
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function get($default=null) {
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if ($this->key === null) return $default;
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$value = cl::get($this->dest, $this->key, $default);
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if ($value === null && !$this->allowNull) return $default;
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if ($value === false && !$this->allowFalse) return $default;
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if ($value === "" && !$this->allowEmpty) return $default;
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return $value;
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}
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function set($value): void {
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if ($this->key === null) return;
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cl::set($this->dest, $this->key, $value);
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}
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function del(): void {
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if ($this->key === null) return;
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cl::del($this->dest, $this->key);
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}
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}
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