Initial copy from other repository (nothing is fixed here)

2025-11-22 23:08:48 +01:00
parent e343d044ff
commit f9faa9b296
249 changed files with 15806 additions and 1 deletions
@@ -0,0 +1,121 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2023  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.command;
+
+import java.lang.annotation.*;
+import java.lang.reflect.Method;
+import java.lang.reflect.Parameter;
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.util.Optional;
+import java.util.function.Function;
+
+public interface Handler {
+
+    default Optional<Class<?>> getGenericTypeOfReturn(Method method) {
+        Type type;
+        try {
+            type = method.getGenericReturnType();
+        } catch (Exception e) {
+            return Optional.empty();
+        }
+        if (!(type instanceof ParameterizedType)) {
+            return Optional.empty();
+        }
+        ParameterizedType parameterizedType = (ParameterizedType) type;
+        Type[] generics = parameterizedType.getActualTypeArguments();
+        if (generics.length != 1 && generics.length != 2) {
+            return Optional.empty();
+        }
+        Type genericType = generics[generics.length - 1];
+        try {
+            return Optional.of(Class.forName(genericType.getTypeName()));
+        } catch (Exception e) {
+            return Optional.empty();
+        }
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target(ElementType.ANNOTATION_TYPE)
+    @interface Implementation {
+        Class<? extends Handler> value();
+    }
+
+    interface DataCheckable {
+        boolean hasExecutorMapper(Class<?> clazz);
+        boolean hasMapper(String key);
+        boolean hasValidator(String key);
+        boolean hasSupplier(String key);
+    }
+
+    interface DataReadable {
+        Function<?, ?> getExecutorMapper(Class<?> clazz);
+        <A, B> AbstractTypeMapper<A, B> getMapper(String key);
+        <A, B> AbstractTypeValidator<A, B> getValidator(String key);
+        <A, B> AbstractTypeSupplier<A, B> getSupplier(String key);
+    }
+
+    interface DataWritable {
+        Function<?, ?> getExecutorMapper(Class<?> clazz);
+
+        <A, B> void addMapper(String key, boolean local, AbstractTypeMapper<A, B> mapper);
+        <A, B> void addValidator(String key, boolean local, AbstractTypeValidator<A, B> validator);
+        <A, B> void addSupplier(String key, boolean local, AbstractTypeSupplier<A, B> supplier);
+        /**
+         * Invoking the same method twice will result in the exact same result.
+         */
+        <T> T invoke(Method method);
+        void addCommand(Method method, String[] subCommand, String[] description, boolean noTabComplete);
+    }
+
+    interface HandlerMethod<T extends Annotation> extends Handler {
+        void check(T annotation, Method method, DataCheckable dataCheckable) throws Exception;
+
+        int getRunPriority();
+
+        void run(T annotation, Method method, DataWritable dataWritable);
+    }
+
+    interface HandlerParameter<T extends Annotation, A, B> extends Handler {
+        void check(T annotation, Parameter parameter, int index, DataCheckable dataCheckable) throws Exception;
+
+        default boolean needsParentTypeMapper() {
+            return false;
+        }
+
+        /**
+         * Null values are allowed to be returned.
+         */
+        default AbstractTypeMapper<A, B> getTypeMapper(T annotation, Parameter parameter, int index, DataReadable dataReadable, AbstractTypeMapper<A, B> parentTypeMapper) {
+            return null;
+        }
+
+        default int getValidatorPriority() {
+            return 0;
+        }
+
+        /**
+         * Null values are allowed to be returned.
+         */
+        default AbstractTypeValidator<A, B> getValidator(T annotation, Parameter parameter, int index, DataReadable dataReadable) {
+            return null;
+        }
+    }
+}