Add licenses and implement optional tags, requires some testing.

build.gradle

@@ -1,6 +1,6 @@
 plugins {
-    id "architectury-plugin" version "3.0.79"
-    id "forgified-fabric-loom" version "0.6.67" apply false
+    id "architectury-plugin" version "3.0.85"
+    id "forgified-fabric-loom" version "0.6.70" apply false
     id "org.cadixdev.licenser" version "0.5.0"
     id "com.matthewprenger.cursegradle" version "1.4.0" apply false
     id "maven-publish"

common/build.gradle

@@ -20,16 +20,6 @@ task sourcesJar(type: Jar, dependsOn: classes) {
     from sourceSets.main.allSource
 }
 
-task javadocs(type: Javadoc) {
-    source = sourceSets.main.allJava
-}
-
-task javadocsJar(type: Jar, dependsOn: javadocs) {
-    archiveClassifier.set("javadocs")
-    javadocs.failOnError false
-    from javadocs.destinationDir
-}
-
 publishing {
     publications {
         mavenCommon(MavenPublication) {
@@ -39,7 +29,6 @@ publishing {
             artifact(sourcesJar) {
                 builtBy remapSourcesJar
             }
-            artifact javadocsJar
         }
     }
 

common/src/main/java/me/shedaniel/architectury/event/events/BlockEvent.java

@@ -1,3 +1,22 @@
+/*
+ * This file is part of architectury.
+ * Copyright (C) 2020, 2021 shedaniel
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
 package me.shedaniel.architectury.event.events;
 
 import me.shedaniel.architectury.event.Event;

common/src/main/java/me/shedaniel/architectury/event/events/LightningEvent.java

@@ -1,3 +1,22 @@
+/*
+ * This file is part of architectury.
+ * Copyright (C) 2020, 2021 shedaniel
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
 package me.shedaniel.architectury.event.events;
 
 import me.shedaniel.architectury.event.Event;

common/src/main/java/me/shedaniel/architectury/hooks/TagHooks.java

@@ -0,0 +1,56 @@
+/*
+ * This file is part of architectury.
+ * Copyright (C) 2020, 2021 shedaniel
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+package me.shedaniel.architectury.hooks;
+
+import me.shedaniel.architectury.annotations.ExpectPlatform;
+import me.shedaniel.architectury.mixin.FluidTagsAccessor;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.tags.*;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.material.Fluid;
+
+import java.util.function.Supplier;
+
+public final class TagHooks {
+    private TagHooks() {}
+    
+    @ExpectPlatform
+    public static <T> Tag.Named<T> getOptional(ResourceLocation id, Supplier<TagCollection<T>> collection) {
+        throw new AssertionError();
+    }
+    
+    public static Tag.Named<Item> getItemOptional(ResourceLocation id) {
+        return getOptional(id, ItemTags::getAllTags);
+    }
+    
+    public static Tag.Named<Block> getBlockOptional(ResourceLocation id) {
+        return getOptional(id, BlockTags::getAllTags);
+    }
+    
+    public static Tag.Named<Fluid> getFluidOptional(ResourceLocation id) {
+        return getOptional(id, FluidTagsAccessor.getHelper()::getAllTags);
+    }
+    
+    public static Tag.Named<EntityType<?>> getEntityTypeOptional(ResourceLocation id) {
+        return getOptional(id, EntityTypeTags::getAllTags);
+    }
+}

common/src/main/java/me/shedaniel/architectury/mixin/BlockLandingInvoker.java

@@ -1,3 +1,22 @@
+/*
+ * This file is part of architectury.
+ * Copyright (C) 2020, 2021 shedaniel
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
 package me.shedaniel.architectury.mixin;
 
 import me.shedaniel.architectury.event.events.BlockEvent;

common/src/main/java/me/shedaniel/architectury/mixin/FluidTagsAccessor.java

@@ -0,0 +1,34 @@
+/*
+ * This file is part of architectury.
+ * Copyright (C) 2020, 2021 shedaniel
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+package me.shedaniel.architectury.mixin;
+
+import net.minecraft.tags.FluidTags;
+import net.minecraft.tags.StaticTagHelper;
+import net.minecraft.world.level.material.Fluid;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Accessor;
+
+@Mixin(FluidTags.class)
+public interface FluidTagsAccessor {
+    @Accessor("HELPER")
+    static StaticTagHelper<Fluid> getHelper() {
+        throw new AssertionError();
+    }
+}

common/src/main/java/me/shedaniel/architectury/mixin/MixinLightningBolt.java

@@ -1,3 +1,22 @@
+/*
+ * This file is part of architectury.
+ * Copyright (C) 2020, 2021 shedaniel
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
 package me.shedaniel.architectury.mixin;
 
 import me.shedaniel.architectury.event.events.LightningEvent;

common/src/main/resources/architectury-common.mixins.json

@@ -1,16 +1,13 @@
 {
-    "required": true,
-    "package": "me.shedaniel.architectury.mixin",
-    "compatibilityLevel": "JAVA_8",
-    "minVersion": "0.7.11",
-    "client": [
-    ],
-    "mixins": [
-        "BlockLandingInvoker",
-        "MixinLightningBolt"
-    ],
-    "injectors": {
-        "maxShiftBy": 5,
-        "defaultRequire": 1
-    }
+  "required": true,
+  "package": "me.shedaniel.architectury.mixin",
+  "compatibilityLevel": "JAVA_8",
+  "minVersion": "0.7.11",
+  "client": [
+  ],
+  "mixins": ["BlockLandingInvoker", "FluidTagsAccessor", "MixinLightningBolt"],
+  "injectors": {
+    "maxShiftBy": 5,
+    "defaultRequire": 1
+  }
 }

fabric/build.gradle

@@ -1,9 +1,3 @@
-import com.github.jengelman.gradle.plugins.shadow.transformers.Transformer
-import com.github.jengelman.gradle.plugins.shadow.transformers.TransformerContext
-import shadow.org.apache.tools.zip.ZipEntry
-import shadow.org.apache.tools.zip.ZipOutputStream
-import shadow.org.codehaus.plexus.util.IOUtil
-
 plugins {
     id "com.github.johnrengelman.shadow" version "5.0.0"
     id "com.matthewprenger.cursegradle"

fabric/src/main/java/me/shedaniel/architectury/hooks/fabric/TagHooksImpl.java

@@ -0,0 +1,33 @@
+/*
+ * This file is part of architectury.
+ * Copyright (C) 2020, 2021 shedaniel
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+package me.shedaniel.architectury.hooks.fabric;
+
+import net.fabricmc.fabric.api.tag.TagRegistry;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.tags.Tag;
+import net.minecraft.tags.TagCollection;
+
+import java.util.function.Supplier;
+
+public class TagHooksImpl {
+    public static <T> Tag.Named<T> getOptional(ResourceLocation id, Supplier<TagCollection<T>> collection) {
+        return TagRegistry.create(id, collection);
+    }
+}

fabric/src/main/java/me/shedaniel/architectury/plugin/fabric/ArchitecturyMixinPlugin.java

@@ -1,3 +1,22 @@
+/*
+ * This file is part of architectury.
+ * Copyright (C) 2020, 2021 shedaniel
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
 package me.shedaniel.architectury.plugin.fabric;
 
 import net.fabricmc.loader.api.FabricLoader;

forge/src/main/java/me/shedaniel/architectury/mixin/forge/TagHooksImpl.java

@@ -0,0 +1,63 @@
+/*
+ * This file is part of architectury.
+ * Copyright (C) 2020, 2021 shedaniel
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+package me.shedaniel.architectury.mixin.forge;
+
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.tags.Tag;
+import net.minecraft.tags.TagCollection;
+
+import java.lang.ref.WeakReference;
+import java.util.List;
+import java.util.function.Supplier;
+
+public class TagHooksImpl {
+    public static <T> Tag.Named<T> getOptional(ResourceLocation id, Supplier<TagCollection<T>> collection) {
+        return new Tag.Named<T>() {
+            private volatile Tag<T> backend;
+            private volatile WeakReference<TagCollection<T>> backendCollection;
+            
+            @Override
+            public ResourceLocation getName() {
+                return id;
+            }
+    
+            @Override
+            public boolean contains(T object) {
+                return getBackend().contains(object);
+            }
+    
+            @Override
+            public List<T> getValues() {
+                return getBackend().getValues();
+            }
+            
+            private Tag<T> getBackend() {
+                TagCollection<T> currentCollection = collection.get();
+    
+                if (backend == null || backendCollection == null || backendCollection.get() != currentCollection) { // If not initialized or was tag changed.
+                    backendCollection = new WeakReference<>(currentCollection);
+                    return backend = currentCollection.getTagOrEmpty(id);
+                } else {
+                    return backend;
+                }
+            }
+        };
+    }
+}