mirror of
https://github.com/PaperMC/Paper.git
synced 2024-12-01 12:41:50 +01:00
258 lines
8 KiB
Diff
258 lines
8 KiB
Diff
From 0d2be83dcf857b4b29c304bfb4b5d67dde23a13c Mon Sep 17 00:00:00 2001
|
|
From: crast <contact@jamescrasta.com>
|
|
Date: Sat, 16 Feb 2013 14:33:24 -0700
|
|
Subject: [PATCH] Refactor conversions from LazyMetadataValue into abstract
|
|
base class
|
|
|
|
Implementing MetadataValue interface is significant work due to having
|
|
to provide a large amount of conversion stub method. This adds a new
|
|
optional abstract base class to aid in implementation.
|
|
|
|
Includes comprehensive unit tests including a sample adapter class, and
|
|
all existing metadata tests pass.
|
|
---
|
|
.../org/bukkit/metadata/LazyMetadataValue.java | 60 +----------------
|
|
.../org/bukkit/metadata/MetadataValueAdapter.java | 77 ++++++++++++++++++++++
|
|
.../bukkit/metadata/MetadataValueAdapterTest.java | 44 +++++++++++++
|
|
3 files changed, 123 insertions(+), 58 deletions(-)
|
|
create mode 100644 src/main/java/org/bukkit/metadata/MetadataValueAdapter.java
|
|
create mode 100644 src/test/java/org/bukkit/metadata/MetadataValueAdapterTest.java
|
|
|
|
diff --git a/src/main/java/org/bukkit/metadata/LazyMetadataValue.java b/src/main/java/org/bukkit/metadata/LazyMetadataValue.java
|
|
index cc0ba50..9b66da9 100644
|
|
--- a/src/main/java/org/bukkit/metadata/LazyMetadataValue.java
|
|
+++ b/src/main/java/org/bukkit/metadata/LazyMetadataValue.java
|
|
@@ -5,7 +5,6 @@ import java.util.concurrent.Callable;
|
|
|
|
import org.apache.commons.lang.Validate;
|
|
import org.bukkit.plugin.Plugin;
|
|
-import org.bukkit.util.NumberConversions;
|
|
|
|
/**
|
|
* The LazyMetadataValue class implements a type of metadata that is not computed until another plugin asks for it.
|
|
@@ -14,11 +13,10 @@ import org.bukkit.util.NumberConversions;
|
|
* or invalidated at the individual or plugin level. Once invalidated, the LazyMetadataValue will recompute its value
|
|
* when asked.
|
|
*/
|
|
-public class LazyMetadataValue implements MetadataValue {
|
|
+public class LazyMetadataValue extends MetadataValueAdapter implements MetadataValue {
|
|
private Callable<Object> lazyValue;
|
|
private CacheStrategy cacheStrategy;
|
|
private SoftReference<Object> internalValue = new SoftReference<Object>(null);
|
|
- private Plugin owningPlugin;
|
|
private static final Object ACTUALLY_NULL = new Object();
|
|
|
|
/**
|
|
@@ -39,19 +37,14 @@ public class LazyMetadataValue implements MetadataValue {
|
|
* @param lazyValue the lazy value assigned to this metadata value.
|
|
*/
|
|
public LazyMetadataValue(Plugin owningPlugin, CacheStrategy cacheStrategy, Callable<Object> lazyValue) {
|
|
- Validate.notNull(owningPlugin, "owningPlugin cannot be null");
|
|
+ super(owningPlugin);
|
|
Validate.notNull(cacheStrategy, "cacheStrategy cannot be null");
|
|
Validate.notNull(lazyValue, "lazyValue cannot be null");
|
|
|
|
this.lazyValue = lazyValue;
|
|
- this.owningPlugin = owningPlugin;
|
|
this.cacheStrategy = cacheStrategy;
|
|
}
|
|
|
|
- public Plugin getOwningPlugin() {
|
|
- return owningPlugin;
|
|
- }
|
|
-
|
|
public Object value() {
|
|
eval();
|
|
Object value = internalValue.get();
|
|
@@ -61,55 +54,6 @@ public class LazyMetadataValue implements MetadataValue {
|
|
return value;
|
|
}
|
|
|
|
- public int asInt() {
|
|
- return NumberConversions.toInt(value());
|
|
- }
|
|
-
|
|
- public float asFloat() {
|
|
- return NumberConversions.toFloat(value());
|
|
- }
|
|
-
|
|
- public double asDouble() {
|
|
- return NumberConversions.toDouble(value());
|
|
- }
|
|
-
|
|
- public long asLong() {
|
|
- return NumberConversions.toLong(value());
|
|
- }
|
|
-
|
|
- public short asShort() {
|
|
- return NumberConversions.toShort(value());
|
|
- }
|
|
-
|
|
- public byte asByte() {
|
|
- return NumberConversions.toByte(value());
|
|
- }
|
|
-
|
|
- public boolean asBoolean() {
|
|
- Object value = value();
|
|
- if (value instanceof Boolean) {
|
|
- return (Boolean) value;
|
|
- }
|
|
-
|
|
- if (value instanceof Number) {
|
|
- return ((Number) value).intValue() != 0;
|
|
- }
|
|
-
|
|
- if (value instanceof String) {
|
|
- return Boolean.parseBoolean((String) value);
|
|
- }
|
|
-
|
|
- return value != null;
|
|
- }
|
|
-
|
|
- public String asString() {
|
|
- Object value = value();
|
|
-
|
|
- if (value == null) {
|
|
- return "";
|
|
- }
|
|
- return value.toString();
|
|
- }
|
|
|
|
/**
|
|
* Lazily evaluates the value of this metadata item.
|
|
diff --git a/src/main/java/org/bukkit/metadata/MetadataValueAdapter.java b/src/main/java/org/bukkit/metadata/MetadataValueAdapter.java
|
|
new file mode 100644
|
|
index 0000000..9ec7e61
|
|
--- /dev/null
|
|
+++ b/src/main/java/org/bukkit/metadata/MetadataValueAdapter.java
|
|
@@ -0,0 +1,77 @@
|
|
+package org.bukkit.metadata;
|
|
+
|
|
+import org.apache.commons.lang.Validate;
|
|
+import org.bukkit.plugin.Plugin;
|
|
+import org.bukkit.util.NumberConversions;
|
|
+
|
|
+/**
|
|
+ * Optional base class for facilitating MetadataValue implementations.
|
|
+ *
|
|
+ * This provides all the conversion functions for MetadataValue
|
|
+ * so that writing an implementation of MetadataValue is as simple
|
|
+ * as implementing value() and invalidate()
|
|
+ *
|
|
+ */
|
|
+public abstract class MetadataValueAdapter implements MetadataValue {
|
|
+ protected final Plugin owningPlugin;
|
|
+
|
|
+ protected MetadataValueAdapter(Plugin owningPlugin) {
|
|
+ Validate.notNull(owningPlugin, "owningPlugin cannot be null");
|
|
+ this.owningPlugin = owningPlugin;
|
|
+ }
|
|
+
|
|
+ public Plugin getOwningPlugin() {
|
|
+ return owningPlugin;
|
|
+ }
|
|
+
|
|
+ public int asInt() {
|
|
+ return NumberConversions.toInt(value());
|
|
+ }
|
|
+
|
|
+ public float asFloat() {
|
|
+ return NumberConversions.toFloat(value());
|
|
+ }
|
|
+
|
|
+ public double asDouble() {
|
|
+ return NumberConversions.toDouble(value());
|
|
+ }
|
|
+
|
|
+ public long asLong() {
|
|
+ return NumberConversions.toLong(value());
|
|
+ }
|
|
+
|
|
+ public short asShort() {
|
|
+ return NumberConversions.toShort(value());
|
|
+ }
|
|
+
|
|
+ public byte asByte() {
|
|
+ return NumberConversions.toByte(value());
|
|
+ }
|
|
+
|
|
+ public boolean asBoolean() {
|
|
+ Object value = value();
|
|
+ if (value instanceof Boolean) {
|
|
+ return (Boolean) value;
|
|
+ }
|
|
+
|
|
+ if (value instanceof Number) {
|
|
+ return ((Number) value).intValue() != 0;
|
|
+ }
|
|
+
|
|
+ if (value instanceof String) {
|
|
+ return Boolean.parseBoolean((String) value);
|
|
+ }
|
|
+
|
|
+ return value != null;
|
|
+ }
|
|
+
|
|
+ public String asString() {
|
|
+ Object value = value();
|
|
+
|
|
+ if (value == null) {
|
|
+ return "";
|
|
+ }
|
|
+ return value.toString();
|
|
+ }
|
|
+
|
|
+}
|
|
diff --git a/src/test/java/org/bukkit/metadata/MetadataValueAdapterTest.java b/src/test/java/org/bukkit/metadata/MetadataValueAdapterTest.java
|
|
new file mode 100644
|
|
index 0000000..5ae7df4
|
|
--- /dev/null
|
|
+++ b/src/test/java/org/bukkit/metadata/MetadataValueAdapterTest.java
|
|
@@ -0,0 +1,44 @@
|
|
+package org.bukkit.metadata;
|
|
+
|
|
+import static org.junit.Assert.assertEquals;
|
|
+
|
|
+import org.bukkit.plugin.Plugin;
|
|
+import org.bukkit.plugin.TestPlugin;
|
|
+import org.junit.Test;
|
|
+
|
|
+public class MetadataValueAdapterTest {
|
|
+ private TestPlugin plugin = new TestPlugin("x");
|
|
+
|
|
+ @Test
|
|
+ public void testIncrementingAdapter() {
|
|
+ IncrementingMetaValue mv = new IncrementingMetaValue(plugin);
|
|
+ // check getOwningPlugin
|
|
+ assertEquals(mv.getOwningPlugin(), this.plugin);
|
|
+
|
|
+ // check the various value-making methods
|
|
+ assertEquals(mv.asInt(), 1);
|
|
+ assertEquals(mv.asLong(), 2L);
|
|
+ assertEquals(mv.asFloat(), 3.0, 0.001);
|
|
+ assertEquals(mv.asByte(), 4);
|
|
+ assertEquals(mv.asDouble(), 5.0, 0.001);
|
|
+ assertEquals(mv.asShort(), 6);
|
|
+ assertEquals(mv.asString(), "7");
|
|
+ }
|
|
+
|
|
+ /** Silly Metadata implementation that increments every time value() is called */
|
|
+ class IncrementingMetaValue extends MetadataValueAdapter {
|
|
+ private int internalValue = 0;
|
|
+
|
|
+ protected IncrementingMetaValue(Plugin owningPlugin) {
|
|
+ super(owningPlugin);
|
|
+ }
|
|
+
|
|
+ public Object value() {
|
|
+ return ++internalValue;
|
|
+ }
|
|
+
|
|
+ public void invalidate() {
|
|
+ internalValue = 0;
|
|
+ }
|
|
+ }
|
|
+}
|
|
--
|
|
1.8.1-rc2
|
|
|