Support snakeyaml 2

bungee/build.gradle.kts

@@ -1,5 +1,4 @@
 dependencies {
     implementation(projects.viaversionCommon)
-    implementation(projects.compat)
     compileOnly(libs.bungee)
 }

common/build.gradle.kts

@@ -10,6 +10,8 @@ blossom {
 dependencies {
     api(projects.viaversionApi)
     api(projects.viaversionApiLegacy)
+    implementation(projects.compat.snakeyaml2Compat)
+    implementation(projects.compat.snakeyaml1Compat)
 }
 
 java {

common/src/main/java/com/viaversion/viaversion/util/Config.java

@@ -20,6 +20,9 @@ package com.viaversion.viaversion.util;
 import com.google.gson.JsonElement;
 import com.viaversion.viaversion.api.Via;
 import com.viaversion.viaversion.api.configuration.ConfigurationProvider;
+import com.viaversion.viaversion.compatibility.YamlCompat;
+import com.viaversion.viaversion.compatibility.unsafe.Yaml1Compat;
+import com.viaversion.viaversion.compatibility.unsafe.Yaml2Compat;
 import com.viaversion.viaversion.libs.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
 import com.viaversion.viaversion.libs.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
 import java.io.File;
@@ -35,15 +38,15 @@ import java.util.concurrent.ConcurrentSkipListMap;
 import org.checkerframework.checker.nullness.qual.Nullable;
 import org.yaml.snakeyaml.DumperOptions;
 import org.yaml.snakeyaml.Yaml;
-import org.yaml.snakeyaml.representer.Representer;
 
 public abstract class Config implements ConfigurationProvider {
+    private static final YamlCompat YAMP_COMPAT = YamlCompat.isVersion2() ? new Yaml2Compat() : new Yaml1Compat();
     private static final ThreadLocal<Yaml> YAML = ThreadLocal.withInitial(() -> {
         DumperOptions options = new DumperOptions();
         options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
         options.setPrettyFlow(false);
         options.setIndent(2);
-        return new Yaml(new YamlConstructor(), new Representer(), options);
+        return new Yaml(YAMP_COMPAT.createSafeConstructor(), YAMP_COMPAT.createRepresenter(options), options);
     });
 
     private final CommentStore commentStore = new CommentStore('.', 2);
@@ -56,7 +59,7 @@ public abstract class Config implements ConfigurationProvider {
      *
      * @param configFile The location of where the config is loaded/saved.
      */
-    public Config(File configFile) {
+    protected Config(File configFile) {
         this.configFile = configFile;
     }
 

common/src/main/java/com/viaversion/viaversion/util/YamlConstructor.java

@@ -1,54 +0,0 @@
-/*
- * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-package com.viaversion.viaversion.util;
-
-import java.util.concurrent.ConcurrentSkipListMap;
-import org.yaml.snakeyaml.constructor.Constructor;
-import org.yaml.snakeyaml.constructor.SafeConstructor;
-import org.yaml.snakeyaml.nodes.Node;
-import org.yaml.snakeyaml.nodes.NodeId;
-import org.yaml.snakeyaml.nodes.Tag;
-
-public class YamlConstructor extends SafeConstructor {
-    public YamlConstructor() {
-        super();
-        yamlClassConstructors.put(NodeId.mapping, new YamlConstructor.ConstructYamlMap());
-        yamlConstructors.put(Tag.OMAP, new YamlConstructor.ConstructYamlOmap());
-    }
-
-    class Map extends Constructor.ConstructYamlMap {
-        @Override
-        public Object construct(Node node) {
-            Object o = super.construct(node);
-            if (o instanceof Map && !(o instanceof ConcurrentSkipListMap)) {
-                return new ConcurrentSkipListMap<>((java.util.Map<?, ?>) o);
-            }
-            return o;
-        }
-    }
-
-    class ConstructYamlOmap extends Constructor.ConstructYamlOmap {
-        public Object construct(Node node) {
-            Object o = super.construct(node);
-            if (o instanceof Map && !(o instanceof ConcurrentSkipListMap)) {
-                return new ConcurrentSkipListMap<>((java.util.Map<?, ?>) o);
-            }
-            return o;
-        }
-    }
-}

compat/build.gradle.kts

@@ -1,4 +1,5 @@
 dependencies {
-    api(projects.compat.javaCompatCommon)
-    api(projects.compat.javaCompatUnsafe)
+    api(projects.compat.snakeyamlCompatCommon)
+    api(projects.compat.snakeyaml2Compat)
+    api(projects.compat.snakeyaml1Compat)
 }

compat/java-compat-common/src/main/java/com/viaversion/viaversion/compatibility/ForcefulFieldModifier.java

@@ -1,42 +0,0 @@
-/*
- * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-package com.viaversion.viaversion.compatibility;
-
-import java.lang.reflect.Field;
-
-/**
- * Exposes a way to modify a {@link Field}, regardless of its limitations (given it is accessible by the caller).
- * <p>
- * <i>Note:</i> This is <b>explicitly</b> an implementation detail. Do not rely on this within plugins and any
- * non-ViaVersion code.
- * </p>
- */
-public interface ForcefulFieldModifier {
-    /**
-     * Sets the field regardless of field finality.
-     * <p>
-     * <i>Note:</i> This does not set the accessibility of the field.
-     * </p>
-     *
-     * @param field  the field to set the modifiers of. Will throw if {@code null}.
-     * @param holder the eye of the beholder. For static fields, use {@code null}.
-     * @param object the new value to set of the object.
-     */
-    void setField(final Field field, final Object holder, final Object object)
-            throws ReflectiveOperationException;
-}

compat/java-compat-unsafe/build.gradle.kts

@@ -1,3 +0,0 @@
-dependencies {
-    api(projects.compat.javaCompatCommon)
-}

compat/java-compat-unsafe/src/main/java/com/viaversion/viaversion/compatibility/unsafe/UnsafeBackedForcefulFieldModifier.java

@@ -1,50 +0,0 @@
-/*
- * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-package com.viaversion.viaversion.compatibility.unsafe;
-
-import com.viaversion.viaversion.compatibility.ForcefulFieldModifier;
-import java.lang.reflect.Field;
-import java.util.Objects;
-
-/**
- * @deprecated usage of sun.misc.Unsafe is discouraged and can stop working in future Java releases.
- */
-@SuppressWarnings({
-        "java:S1191", // SonarLint/-Qube/-Cloud: We need Unsafe for the modifier implementation.
-        "java:S3011", // ^: We need to circumvent the access restrictions of fields.
-})
-@Deprecated
-public final class UnsafeBackedForcefulFieldModifier implements ForcefulFieldModifier {
-    private final sun.misc.Unsafe unsafe;
-
-    public UnsafeBackedForcefulFieldModifier() throws ReflectiveOperationException {
-        final Field theUnsafeField = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
-        theUnsafeField.setAccessible(true);
-        this.unsafe = (sun.misc.Unsafe) theUnsafeField.get(null);
-    }
-
-    @Override
-    public void setField(final Field field, final Object holder, final Object object) {
-        Objects.requireNonNull(field, "field must not be null");
-
-        final Object ufo = holder != null ? holder : this.unsafe.staticFieldBase(field);
-        final long offset = holder != null ? this.unsafe.objectFieldOffset(field) : this.unsafe.staticFieldOffset(field);
-
-        this.unsafe.putObject(ufo, offset, object);
-    }
-}

compat/snakeyaml-compat-common/build.gradle.kts

@@ -0,0 +1,3 @@
+dependencies {
+    compileOnly(rootProject.libs.snakeYaml2)
+}

compat/snakeyaml-compat-common/src/main/java/com/viaversion/viaversion/compatibility/YamlCompat.java

@@ -0,0 +1,38 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2023 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viaversion.compatibility;
+
+import org.yaml.snakeyaml.DumperOptions;
+import org.yaml.snakeyaml.constructor.SafeConstructor;
+import org.yaml.snakeyaml.representer.Representer;
+
+public interface YamlCompat {
+
+    Representer createRepresenter(DumperOptions dumperOptions);
+
+    SafeConstructor createSafeConstructor();
+
+    static boolean isVersion2() {
+        try {
+            Representer.class.getDeclaredConstructor(DumperOptions.class);
+            return true;
+        } catch (NoSuchMethodException e) {
+            return false;
+        }
+    }
+}

compat/snakeyaml1-compat/build.gradle.kts

@@ -0,0 +1,4 @@
+dependencies {
+    api(projects.compat.snakeyamlCompatCommon)
+    compileOnly(rootProject.libs.snakeYaml)
+}

compat/snakeyaml1-compat/src/main/java/com/viaversion/viaversion/compatibility/unsafe/Yaml1Compat.java

@@ -0,0 +1,46 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2023 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viaversion.compatibility.unsafe;
+
+import com.viaversion.viaversion.compatibility.YamlCompat;
+import org.yaml.snakeyaml.DumperOptions;
+import org.yaml.snakeyaml.constructor.SafeConstructor;
+import org.yaml.snakeyaml.nodes.NodeId;
+import org.yaml.snakeyaml.nodes.Tag;
+import org.yaml.snakeyaml.representer.Representer;
+
+public final class Yaml1Compat implements YamlCompat {
+
+    @Override
+    public Representer createRepresenter(DumperOptions dumperOptions) {
+        return new Representer();
+    }
+
+    @Override
+    public SafeConstructor createSafeConstructor() {
+        return new CustomSafeConstructor();
+    }
+
+    private static final class CustomSafeConstructor extends SafeConstructor {
+
+        public CustomSafeConstructor() {
+            yamlClassConstructors.put(NodeId.mapping, new ConstructYamlMap());
+            yamlConstructors.put(Tag.OMAP, new ConstructYamlOmap());
+        }
+    }
+}

compat/snakeyaml2-compat/build.gradle.kts

@@ -0,0 +1,4 @@
+dependencies {
+    api(projects.compat.snakeyamlCompatCommon)
+    compileOnly(rootProject.libs.snakeYaml2)
+}

compat/snakeyaml2-compat/src/main/java/com/viaversion/viaversion/compatibility/unsafe/Yaml2Compat.java

@@ -0,0 +1,48 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2023 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viaversion.compatibility.unsafe;
+
+import com.viaversion.viaversion.compatibility.YamlCompat;
+import org.yaml.snakeyaml.DumperOptions;
+import org.yaml.snakeyaml.LoaderOptions;
+import org.yaml.snakeyaml.constructor.SafeConstructor;
+import org.yaml.snakeyaml.nodes.NodeId;
+import org.yaml.snakeyaml.nodes.Tag;
+import org.yaml.snakeyaml.representer.Representer;
+
+public final class Yaml2Compat implements YamlCompat {
+
+    @Override
+    public Representer createRepresenter(DumperOptions dumperOptions) {
+        return new Representer(dumperOptions);
+    }
+
+    @Override
+    public SafeConstructor createSafeConstructor() {
+        return new CustomSafeConstructor();
+    }
+
+    private static final class CustomSafeConstructor extends SafeConstructor {
+
+        public CustomSafeConstructor() {
+            super(new LoaderOptions());
+            yamlClassConstructors.put(NodeId.mapping, new ConstructYamlMap());
+            yamlConstructors.put(Tag.OMAP, new ConstructYamlOmap());
+        }
+    }
+}

gradle/libs.versions.toml

@@ -12,6 +12,7 @@ openNBT = "2.1"
 netty = "4.0.20.Final"
 guava = "17.0"
 snakeYaml = "1.18"
+snakeYaml2 = "2.0"
 
 junit = "5.9.2"
 checkerQual = "3.29.0"
@@ -41,6 +42,7 @@ openNBT = { group = "com.viaversion", name = "opennbt", version.ref = "openNBT"
 netty = { group = "io.netty", name = "netty-all", version.ref = "netty" }
 guava = { group = "com.google.guava", name = "guava", version.ref = "guava" }
 snakeYaml = { group = "org.yaml", name = "snakeyaml", version.ref = "snakeYaml" }
+snakeYaml2 = { group = "org.yaml", name = "snakeyaml", version.ref = "snakeYaml2" }
 
 jupiterApi = { group = "org.junit.jupiter", name = "junit-jupiter-api", version.ref = "junit" }
 jupiterEngine = { group = "org.junit.jupiter", name = "junit-jupiter-engine", version.ref = "junit" }

settings.gradle.kts

@@ -27,7 +27,7 @@ rootProject.name = "viaversion-parent"
 includeBuild("build-logic")
 
 include("adventure")
-include("compat", "compat:java-compat-common", "compat:java-compat-unsafe", "compat:protocolsupport-compat")
+include("compat", "compat:snakeyaml-compat-common", "compat:snakeyaml2-compat", "compat:snakeyaml1-compat", "compat:protocolsupport-compat")
 
 setupViaSubproject("api")
 setupViaSubproject("api-legacy")