Refactored TDF processing PHP code to confirm to new TDF format

build/scripts/Targets/TargetRegister.php

@@ -0,0 +1,44 @@
+<?php
+namespace Targets;
+
+use Targets\TargetDescriptionFiles\TargetDescriptionFile;
+
+require_once __DIR__ . "/TargetRegisterBitField.php";
+
+/**
+ * Do not confuse this with `TargetDescriptionFiles\Register` - that class represents a <register> element in a TDF,
+ * which is part of some unresolved register group.
+ *
+ * This class represents a **resolved** target register, within a register group, within a target peripheral. With
+ * this class, we can access the absolute address of the register.
+ *
+ * This class is constructed from a `TargetDescriptionFiles\Register` object.
+ * @see TargetDescriptionFile::getTargetRegister() for more.
+ */
+class TargetRegister
+{
+    public ?string $key = null;
+    public ?string $name = null;
+    public ?int $address = null;
+    public ?int $size = null;
+    public ?string $description = null;
+
+    /** @var TargetRegisterBitField[] */
+    public array $bitFields;
+
+    public function __construct(
+        ?string $key,
+        ?string $name,
+        ?int $address,
+        ?int $size,
+        ?string $description,
+        array $bitFields
+    ) {
+        $this->key = $key;
+        $this->name = $name;
+        $this->address = $address;
+        $this->size = $size;
+        $this->description = $description;
+        $this->bitFields = $bitFields;
+    }
+}