Replace Reflections usage with an annotation processor

Reduces jar size by about 1.5-2mb

ap/pom.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.geysermc</groupId>
+        <artifactId>geyser-parent</artifactId>
+        <version>1.4.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>ap</artifactId>
+    <version>1.4.1-SNAPSHOT</version>
+</project>

ap/src/main/java/org/geysermc/processor/BlockEntityProcessor.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Geyser
+ */
+
+package org.geysermc.processor;
+
+import javax.annotation.processing.SupportedAnnotationTypes;
+import javax.annotation.processing.SupportedSourceVersion;
+import javax.lang.model.SourceVersion;
+
+@SupportedAnnotationTypes("org.geysermc.connector.network.translators.world.block.entity.BlockEntity")
+@SupportedSourceVersion(SourceVersion.RELEASE_8)
+public class BlockEntityProcessor extends ClassProcessor {
+    public BlockEntityProcessor() {
+        super("org.geysermc.connector.network.translators.world.block.entity.BlockEntity");
+    }
+}

ap/src/main/java/org/geysermc/processor/ClassProcessor.java

@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Geyser
+ */
+
+package org.geysermc.processor;
+
+import javax.annotation.processing.AbstractProcessor;
+import javax.annotation.processing.ProcessingEnvironment;
+import javax.annotation.processing.RoundEnvironment;
+import javax.lang.model.element.AnnotationMirror;
+import javax.lang.model.element.Element;
+import javax.lang.model.element.ElementKind;
+import javax.lang.model.element.TypeElement;
+import javax.tools.Diagnostic;
+import javax.tools.FileObject;
+import javax.tools.StandardLocation;
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Set;
+
+public class ClassProcessor extends AbstractProcessor {
+    private final String annotationClassName;
+
+    private Path outputPath;
+
+    private final List<String> locations = new ArrayList<>();
+
+    public ClassProcessor(String annotationClassName) {
+        this.annotationClassName = annotationClassName;
+    }
+
+    @Override
+    public synchronized void init(ProcessingEnvironment processingEnv) {
+        super.init(processingEnv);
+
+        this.processingEnv.getMessager().printMessage(Diagnostic.Kind.NOTE, "Initializing processor " + this.annotationClassName);
+
+        String outputFile = processingEnv.getOptions().get("metadataOutputFile");
+        if (outputFile != null && !outputFile.isEmpty()) {
+            this.outputPath = Paths.get(outputFile);
+        }
+    }
+
+    @Override
+    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
+        if (roundEnv.processingOver()) {
+            if (!roundEnv.errorRaised()) {
+                complete();
+            }
+
+            return false;
+        }
+
+        if (!contains(annotations, this.annotationClassName)) {
+            return false;
+        }
+
+        for (Element element : roundEnv.getRootElements()) {
+            if (element.getKind() != ElementKind.CLASS) {
+                continue;
+            }
+
+            if (!contains(element.getAnnotationMirrors(), this.annotationClassName)) {
+                continue;
+            }
+
+            TypeElement typeElement = (TypeElement) element;
+            this.locations.add(typeElement.getQualifiedName().toString());
+        }
+        return true;
+    }
+
+    public boolean contains(Collection<? extends TypeElement> elements, String className) {
+        if (elements.isEmpty()) {
+            return false;
+        }
+
+        for (TypeElement element : elements) {
+            if (element.getQualifiedName().contentEquals(className)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public boolean contains(List<? extends AnnotationMirror> elements, String className) {
+        if (elements.isEmpty()) {
+            return false;
+        }
+
+        for (AnnotationMirror element : elements) {
+            if (element.getAnnotationType().toString().equals(className)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public void complete() {
+        try (BufferedWriter writer = this.createWriter()) {
+            for (String location : this.locations) {
+                writer.write(location);
+                writer.newLine();
+            }
+        } catch (IOException ex) {
+            ex.printStackTrace();
+        }
+
+        this.processingEnv.getMessager().printMessage(Diagnostic.Kind.NOTE, "Completed processing for " + this.annotationClassName);
+    }
+
+    private BufferedWriter createWriter() throws IOException {
+        if (this.outputPath != null) {
+            this.processingEnv.getMessager().printMessage(Diagnostic.Kind.NOTE, "Writing " + this.annotationClassName + " to " + this.outputPath);
+            return Files.newBufferedWriter(this.outputPath);
+        }
+
+        FileObject obj = this.processingEnv.getFiler().createResource(StandardLocation.CLASS_OUTPUT, "", this.annotationClassName);
+        this.processingEnv.getMessager().printMessage(Diagnostic.Kind.NOTE, "Writing " + this.annotationClassName + " to " + obj.toUri());
+        return new BufferedWriter(obj.openWriter());
+    }
+}

ap/src/main/java/org/geysermc/processor/CollisionRemapperProcessor.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Geyser
+ */
+
+package org.geysermc.processor;
+
+import javax.annotation.processing.SupportedAnnotationTypes;
+import javax.annotation.processing.SupportedSourceVersion;
+import javax.lang.model.SourceVersion;
+
+@SupportedAnnotationTypes("org.geysermc.connector.network.translators.collision.CollisionRemapper")
+@SupportedSourceVersion(SourceVersion.RELEASE_8)
+public class CollisionRemapperProcessor extends ClassProcessor {
+    public CollisionRemapperProcessor() {
+        super("org.geysermc.connector.network.translators.collision.CollisionRemapper");
+    }
+}

ap/src/main/java/org/geysermc/processor/ItemRemapperProcessor.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Geyser
+ */
+
+package org.geysermc.processor;
+
+import javax.annotation.processing.SupportedAnnotationTypes;
+import javax.annotation.processing.SupportedSourceVersion;
+import javax.lang.model.SourceVersion;
+
+@SupportedAnnotationTypes("org.geysermc.connector.network.translators.ItemRemapper")
+@SupportedSourceVersion(SourceVersion.RELEASE_8)
+public class ItemRemapperProcessor extends ClassProcessor {
+    public ItemRemapperProcessor() {
+        super("org.geysermc.connector.network.translators.ItemRemapper");
+    }
+}

ap/src/main/java/org/geysermc/processor/PacketTranslatorProcessor.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Geyser
+ */
+
+package org.geysermc.processor;
+
+import javax.annotation.processing.SupportedAnnotationTypes;
+import javax.annotation.processing.SupportedSourceVersion;
+import javax.lang.model.SourceVersion;
+
+@SupportedAnnotationTypes("org.geysermc.connector.network.translators.Translator")
+@SupportedSourceVersion(SourceVersion.RELEASE_8)
+public class PacketTranslatorProcessor extends ClassProcessor {
+    public PacketTranslatorProcessor() {
+        super("org.geysermc.connector.network.translators.Translator");
+    }
+}

ap/src/main/java/org/geysermc/processor/SoundHandlerProcessor.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Geyser
+ */
+
+package org.geysermc.processor;
+
+import javax.annotation.processing.SupportedAnnotationTypes;
+import javax.annotation.processing.SupportedSourceVersion;
+import javax.lang.model.SourceVersion;
+
+@SupportedAnnotationTypes("org.geysermc.connector.network.translators.sound.SoundHandler")
+@SupportedSourceVersion(SourceVersion.RELEASE_8)
+public class SoundHandlerProcessor extends ClassProcessor {
+    public SoundHandlerProcessor() {
+        super("org.geysermc.connector.network.translators.sound.SoundHandler");
+    }
+}