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Make BlockImpl a record

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This commit is contained in:
themode 2021-12-22 01:30:10 +01:00 committed by TheMode
parent 9927665d91
commit f3221ff412
4 changed files with 76 additions and 80 deletions
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4
src/main/java/net/minestom/server/instance/block/Block.java
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@ -93,7 +93,9 @@ public sealed interface Block extends ProtocolObject, TagReadable, Blocks permit
}
@Contract(pure = true)
boolean hasNbt();
default boolean hasNbt() {
return nbt() != null;
}
/**
* Returns the block handler.

98
src/main/java/net/minestom/server/instance/block/BlockImpl.java
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@ -12,29 +12,35 @@ import org.jglrxavpok.hephaistos.nbt.NBTCompound;
import org.jglrxavpok.hephaistos.nbt.mutable.MutableNBTCompound;
import java.time.Duration;
import java.util.*;
import java.util.concurrent.atomic.AtomicReference;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.function.Function;
final class BlockImpl implements Block {
record BlockImpl(@NotNull Registry.BlockEntry registry,
@NotNull Map<String, String> properties,
@Nullable NBTCompound nbt,
@Nullable BlockHandler handler) implements Block {
// Block state -> block object
private static final ObjectArray<Block> BLOCK_STATE_MAP = new ObjectArray<>();
// Block id -> Map<Properties, Block>
private static final ObjectArray<Map<Map<String, String>, Block>> POSSIBLE_STATES = new ObjectArray<>();
private static final Registry.Container<Block> CONTAINER = new Registry.Container<>(Registry.Resource.BLOCKS,
(container, namespace, object) -> {
final var stateObject = (Map<String, Object>) object.get("states");
// Loop each state
var propertyEntry = new HashMap<Map<String, String>, Block>();
AtomicReference<Map<Map<String, String>, Block>> ref = new AtomicReference<>();
for (var stateEntry : stateObject.entrySet()) {
final String query = stateEntry.getKey();
final var stateOverride = (Map<String, Object>) stateEntry.getValue();
final var propertyMap = BlockUtils.parseProperties(query);
final Block block = new BlockImpl(Registry.block(namespace, object, stateOverride),
ref, propertyMap, null, null);
propertyMap, null, null);
BLOCK_STATE_MAP.set(block.stateId(), block);
propertyEntry.put(propertyMap, block);
}
ref.setPlain(Map.copyOf(propertyEntry));
POSSIBLE_STATES.set(((Number) object.get("id")).intValue(), Map.copyOf(propertyEntry));
// Register default state
final int defaultState = ((Number) object.get("defaultStateId")).intValue();
container.register(getState(defaultState));
@ -46,6 +52,7 @@ final class BlockImpl implements Block {
static {
BLOCK_STATE_MAP.trim();
POSSIBLE_STATES.trim();
}
static Block get(@NotNull String namespace) {
@ -68,30 +75,16 @@ final class BlockImpl implements Block {
return CONTAINER.values();
}
private final Registry.BlockEntry registry;
private final AtomicReference<Map<Map<String, String>, Block>> possibleProperties;
private final Map<String, String> properties;
private final NBTCompound nbt;
private final BlockHandler handler;
private int hashCode; // Cache
BlockImpl(@NotNull Registry.BlockEntry registry,
@NotNull AtomicReference<Map<Map<String, String>, Block>> possibleProperties,
@NotNull Map<String, String> properties,
@Nullable NBTCompound nbt,
@Nullable BlockHandler handler) {
this.registry = registry;
this.possibleProperties = possibleProperties;
this.properties = properties;
this.nbt = nbt;
this.handler = handler;
public BlockImpl {
properties = Map.copyOf(properties);
}
@Override
public @NotNull Block withProperty(@NotNull String property, @NotNull String value) {
var properties = new HashMap<>(this.properties);
properties.replace(property, value);
final String oldProperty = properties.replace(property, value);
if (oldProperty == null)
throw new IllegalArgumentException("Property " + property + " does not exist");
return compute(properties);
}
@ -111,27 +104,12 @@ final class BlockImpl implements Block {
var temporaryNbt = new MutableNBTCompound(Objects.requireNonNullElse(nbt, NBTCompound.EMPTY));
tag.write(temporaryNbt, value);
final var finalNbt = temporaryNbt.getSize() > 0 ? NBT_CACHE.get(temporaryNbt.toCompound(), Function.identity()) : null;
return new BlockImpl(registry, possibleProperties, properties, finalNbt, handler);
return new BlockImpl(registry, properties, finalNbt, handler);
}
@Override
public @NotNull Block withHandler(@Nullable BlockHandler handler) {
return new BlockImpl(registry, possibleProperties, properties, nbt, handler);
}
@Override
public boolean hasNbt() {
return nbt != null;
}
@Override
public @Nullable BlockHandler handler() {
return handler;
}
@Override
public @NotNull Map<String, String> properties() {
return Collections.unmodifiableMap(properties);
return new BlockImpl(registry, properties, nbt, handler);
}
@Override
@ -139,47 +117,18 @@ final class BlockImpl implements Block {
return possibleProperties().values();
}
@Override
public @NotNull Registry.BlockEntry registry() {
return registry;
}
@Override
public <T> @Nullable T getTag(@NotNull Tag<T> tag) {
return nbt != null ? tag.read(nbt) : null;
}
private Map<Map<String, String>, Block> possibleProperties() {
return possibleProperties.getPlain();
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
BlockImpl block = (BlockImpl) o;
return stateId() == block.stateId() &&
Objects.equals(nbt, block.nbt) &&
Objects.equals(handler, block.handler);
}
@Override
public int hashCode() {
int result = hashCode;
if (result == 0) {
result = Objects.hash(stateId(), nbt, handler);
this.hashCode = result;
}
return result;
return POSSIBLE_STATES.get(id());
}
@Override
public String toString() {
return name() + "{" +
"properties=" + properties +
", nbt=" + nbt +
", handler=" + handler +
'}';
return String.format("%s{properties=%s, nbt=%s, handler=%s}", name(), properties, nbt, handler);
}
private Block compute(Map<String, String> properties) {
@ -187,7 +136,6 @@ final class BlockImpl implements Block {
Block block = possibleProperties().get(properties);
if (block == null)
throw new IllegalArgumentException("Invalid properties: " + properties + " for block " + this);
return nbt == null && handler == null ? block :
new BlockImpl(block.registry(), possibleProperties, block.properties(), nbt, handler);
return nbt == null && handler == null ? block : new BlockImpl(block.registry(), block.properties(), nbt, handler);
}
}

9
src/main/java/net/minestom/server/tag/Tag.java
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@ -50,7 +50,14 @@ public class Tag<T> {
* Writing will override all tags. Proceed with caution.
*/
@ApiStatus.Experimental
public static final Tag<NBTCompound> NBT = new Tag<>(null, NBTCompoundLike::toCompound, MutableNBTCompound::copyFrom);
public static final Tag<NBTCompound> NBT = new Tag<>(null, NBTCompoundLike::toCompound,
(original, updated) -> {
if (updated == null) {
original.clear();
return;
}
original.copyFrom(updated);
});
private final String key;
private final Function<NBTCompoundLike, T> readFunction;

45
src/test/java/instance/BlockTest.java
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@ -1,19 +1,51 @@
package instance;
import net.minestom.server.instance.block.Block;
import org.jglrxavpok.hephaistos.nbt.NBT;
import org.jglrxavpok.hephaistos.nbt.NBTCompound;
import org.jglrxavpok.hephaistos.nbt.NBTInt;
import org.junit.jupiter.api.Test;
import java.util.Map;
import java.util.Objects;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.*;
public class BlockTest {
@Test
public void testNBT() {
Block block = Block.CHEST;
assertFalse(block.hasNbt());
assertNull(block.nbt());
var nbt = new NBTCompound(Map.of("key", NBT.Int(5)));
block = block.withNbt(nbt);
assertTrue(block.hasNbt());
assertEquals(block.nbt(), nbt);
block = block.withNbt(null);
assertFalse(block.hasNbt());
assertNull(block.nbt());
}
@Test
public void testProperty() {
Block block = Block.CHEST;
assertEquals(block.properties(), Objects.requireNonNull(Block.fromBlockId(block.id())).properties());
for (var possible : block.possibleStates()) {
assertEquals(possible, block.withProperties(possible.properties()));
}
assertEquals(block.withProperty("facing", "north").getProperty("facing"), "north");
assertNotEquals(block.withProperty("facing", "north"), block.withProperty("facing", "south"));
assertThrows(Exception.class, () -> block.withProperty("random", "randomKey"));
}
@Test
public void testEquality() {
var nbt = new NBTCompound(Map.of("key", new NBTInt(5)));
var nbt = new NBTCompound(Map.of("key", NBT.Int(5)));
Block b1 = Block.CHEST;
Block b2 = Block.CHEST;
assertEquals(b1.withNbt(nbt), b2.withNbt(nbt));
@ -21,4 +53,11 @@ public class BlockTest {
assertEquals(b1.withProperty("facing", "north").getProperty("facing"), "north");
assertEquals(b1.withProperty("facing", "north"), b2.withProperty("facing", "north"));
}
@Test
public void testMutability() {
Block block = Block.CHEST;
assertThrows(Exception.class, () -> block.properties().put("facing", "north"));
assertThrows(Exception.class, () -> block.withProperty("facing", "north").properties().put("facing", "south"));
}
}