ExprExactItem

src/main/java/ch/njol/skript/expressions/ExprExactItem.java

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+package ch.njol.skript.expressions;
+
+import ch.njol.skript.doc.Description;
+import ch.njol.skript.doc.Examples;
+import ch.njol.skript.doc.Name;
+import ch.njol.skript.doc.Since;
+import ch.njol.skript.expressions.base.SimplePropertyExpression;
+import org.bukkit.Material;
+import org.bukkit.block.Block;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.BlockStateMeta;
+import org.jetbrains.annotations.Nullable;
+
+@Name("Exact Item")
+@Description(
+	"Get an exact item representation of a block, carrying over any data. "
+	+ "For example, using this expression on a chest block with items stored inside will return a chest "
+	+ "item with the exact same items in its inventory as the chest block."
+)
+@Examples("set {_item} to exact item of block at location(0, 0, 0)")
+@Since("INSERT VERSION")
+public class ExprExactItem extends SimplePropertyExpression<Block, ItemStack> {
+
+	static {
+		register(ExprExactItem.class, ItemStack.class, "exact item[s]", "blocks");
+	}
+
+	@Override
+	public @Nullable ItemStack convert(Block block) {
+		Material blockMaterial = block.getType();
+		if (!blockMaterial.isItem())
+			return null;
+		ItemStack itemStack = new ItemStack(blockMaterial);
+		if (itemStack.getItemMeta() instanceof BlockStateMeta blockStateMeta) {
+			blockStateMeta.setBlockState(block.getState());
+			itemStack.setItemMeta(blockStateMeta);
+		}
+		return itemStack;
+	}
+
+	@Override
+	public Class<? extends ItemStack> getReturnType() {
+		return ItemStack.class;
+	}
+
+	@Override
+	protected String getPropertyName() {
+		return "exact item";
+	}
+
+}

src/test/skript/tests/syntaxes/expressions/ExprExactItem.sk

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+test "exact item chest":
+	set {_old} to block data of test-block
+	set test-block to a chest
+	add a diamond to inventory of test-block
+	set {_item} to exact item of test-block
+	assert items in inventory of {_item} is a diamond with "BlockState data of block should carry over to exact item"
+	set block data of test-block to {_old}