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Fix launching older Forge versions (#3920)

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This commit is contained in:
Josiah Glosson
2025-07-06 14:09:49 -05:00
committed by GitHub
parent e5b134f8f4
commit 31ecace083
2 changed files with 16 additions and 2 deletions
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12
packages/app-lib/java/src/main/java/com/modrinth/theseus/MinecraftLaunch.java
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@@ -2,6 +2,7 @@ package com.modrinth.theseus;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Arrays;
@@ -76,14 +77,14 @@ public final class MinecraftLaunch {
Object thisObject = null;
if (!Modifier.isStatic(mainMethod.getModifiers())) {
thisObject = mainClass.getDeclaredConstructor().newInstance();
thisObject = forceAccessible(mainClass.getDeclaredConstructor()).newInstance();
}
final Object[] parameters = mainMethod.getParameterCount() > 0 ? new Object[] {args} : new Object[] {};
mainMethod.invoke(thisObject, parameters);
} else {
findSimpleMainMethod(mainClass).invoke(null, new Object[] {args});
forceAccessible(findSimpleMainMethod(mainClass)).invoke(null, new Object[] {args});
}
}
@@ -115,4 +116,11 @@ public final class MinecraftLaunch {
private static Method findSimpleMainMethod(Class<?> mainClass) throws NoSuchMethodException {
return mainClass.getMethod("main", String[].class);
}
private static <T extends AccessibleObject> T forceAccessible(T object) throws ReflectiveOperationException {
final Method setAccessible0 = AccessibleObject.class.getDeclaredMethod("setAccessible0", boolean.class);
setAccessible0.setAccessible(true);
setAccessible0.invoke(object, true);
return object;
}
}