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46 changes: 46 additions & 0 deletions
46
spark-common/src/main/java/me/lucko/spark/common/util/classfinder/ClassFinder.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| /* | ||
| * This file is part of spark. | ||
| * | ||
| * Copyright (c) lucko (Luck) <[email protected]> | ||
| * Copyright (c) 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/>. | ||
| */ | ||
|
|
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| package me.lucko.spark.common.util.classfinder; | ||
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| import com.google.common.collect.ImmutableList; | ||
| import org.checkerframework.checker.nullness.qual.Nullable; | ||
|
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| public interface ClassFinder { | ||
|
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| /** | ||
| * Creates a ClassFinder that combines the results of multiple other finders. | ||
| * | ||
| * @param finders the other class finders | ||
| * @return the combined class finder | ||
| */ | ||
| static ClassFinder combining(ClassFinder... finders) { | ||
| return new CombinedClassFinder(ImmutableList.copyOf(finders)); | ||
| } | ||
|
|
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| /** | ||
| * Attempts to find a class by name. | ||
| * | ||
| * @param className the name of the class | ||
| * @return the class, if found | ||
| */ | ||
| @Nullable Class<?> findClass(String className); | ||
|
|
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| } |
44 changes: 44 additions & 0 deletions
44
spark-common/src/main/java/me/lucko/spark/common/util/classfinder/CombinedClassFinder.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| /* | ||
| * This file is part of spark. | ||
| * | ||
| * Copyright (c) lucko (Luck) <[email protected]> | ||
| * Copyright (c) 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/>. | ||
| */ | ||
|
|
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| package me.lucko.spark.common.util.classfinder; | ||
|
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| import org.checkerframework.checker.nullness.qual.Nullable; | ||
|
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| import java.util.List; | ||
|
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| class CombinedClassFinder implements ClassFinder { | ||
| private final List<ClassFinder> finders; | ||
|
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| CombinedClassFinder(List<ClassFinder> finders) { | ||
| this.finders = finders; | ||
| } | ||
|
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| @Override | ||
| public @Nullable Class<?> findClass(String className) { | ||
| for (ClassFinder finder : this.finders) { | ||
| Class<?> clazz = finder.findClass(className); | ||
| if (clazz != null) { | ||
| return clazz; | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
| } |
40 changes: 40 additions & 0 deletions
40
spark-common/src/main/java/me/lucko/spark/common/util/classfinder/FallbackClassFinder.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| /* | ||
| * This file is part of spark. | ||
| * | ||
| * Copyright (c) lucko (Luck) <[email protected]> | ||
| * Copyright (c) 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/>. | ||
| */ | ||
|
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| package me.lucko.spark.common.util.classfinder; | ||
|
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| import org.checkerframework.checker.nullness.qual.Nullable; | ||
|
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| /** | ||
| * Uses {@link Class#forName(String)} to find a class reference for given class names. | ||
| */ | ||
| public enum FallbackClassFinder implements ClassFinder { | ||
| INSTANCE; | ||
|
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| @Override | ||
| public @Nullable Class<?> findClass(String className) { | ||
| try { | ||
| return Class.forName(className); | ||
| } catch (Throwable e) { | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
| } |
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