84 lines
2.4 KiB
PHP
84 lines
2.4 KiB
PHP
<?php
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namespace Targets;
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use Targets\TargetDescriptionFiles\TargetDescriptionFile;
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require_once __DIR__ . "/TargetRegister.php";
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/**
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* Do not confuse this with `TargetDescriptionFiles\RegisterGroup` - that class represents a <register-group> element
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* in a TDF. Any references to subgroups will be unresolved.
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*
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* This class represents a **resolved** target register group, within a target peripheral. With this class, we can
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* access all subgroups, including referenced subgroups, along with their registers.
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*
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* This class is constructed from a `TargetDescriptionFiles\RegisterGroup` object.
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* @see TargetDescriptionFile::getTargetRegisterGroup() for more.
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*/
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class TargetRegisterGroup
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{
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public ?string $key = null;
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public ?string $name = null;
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public ?string $addressSpaceKey = null;
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public ?int $baseAddress = null;
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/** @var TargetRegisterGroup[] */
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public array $subgroups = [];
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/** @var TargetRegister[] */
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public array $registers = [];
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public function __construct(
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?string $key,
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?string $name,
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?string $addressSpaceKey,
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?int $baseAddress,
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array $subgroups,
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array $registers
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) {
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$this->key = $key;
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$this->name = $name;
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$this->addressSpaceKey = $addressSpaceKey;
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$this->baseAddress = $baseAddress;
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$this->subgroups = $subgroups;
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$this->registers = $registers;
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}
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public function getRegister(array|string $keys): ?TargetRegister
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{
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if (is_string($keys)) {
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$keys = explode('.', $keys);
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}
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$registerKey = array_pop($keys);
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$group = !empty($keys) > 1 ? $this->getSubgroup($keys) : $this;
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if ($group instanceof TargetRegisterGroup) {
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foreach ($group->registers as $register) {
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if ($register->key === $registerKey) {
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return $register;
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}
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}
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}
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return null;
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}
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public function getSubgroup(array|string $subgroupKeys): ?TargetRegisterGroup
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{
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if (is_string($subgroupKeys)) {
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$subgroupKeys = explode('.', $subgroupKeys);
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}
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$firstLevelSubgroupKey = array_shift($subgroupKeys);
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foreach ($this->subgroups as $subgroup) {
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if ($subgroup->key === $firstLevelSubgroupKey) {
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return !empty($subgroupKeys) ? $subgroup->getSubgroup($subgroupKeys) : $subgroup;
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}
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}
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return null;
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}
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}
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