Plex-FAWE/worldedit-core/src/main/java/com/sk89q/worldedit/command/util/annotation/Confirm.java

220 lines
9.2 KiB
Java

package com.sk89q.worldedit.command.util.annotation;
import com.boydti.fawe.config.Caption;
import com.boydti.fawe.util.task.InterruptableCondition;
import com.sk89q.worldedit.IncompleteRegionException;
import com.sk89q.worldedit.WorldEdit;
import com.sk89q.worldedit.command.argument.Arguments;
import com.sk89q.worldedit.event.Event;
import com.sk89q.worldedit.event.platform.CommandEvent;
import com.sk89q.worldedit.extension.platform.Actor;
import com.sk89q.worldedit.internal.annotation.Selection;
import com.sk89q.worldedit.internal.command.CommandArgParser;
import com.sk89q.worldedit.internal.util.Substring;
import com.sk89q.worldedit.math.BlockVector3;
import com.sk89q.worldedit.regions.Region;
import com.sk89q.worldedit.util.formatting.text.TextComponent;
import com.sk89q.worldedit.util.formatting.text.TranslatableComponent;
import org.enginehub.piston.exception.StopExecutionException;
import org.enginehub.piston.inject.InjectAnnotation;
import org.enginehub.piston.inject.InjectedValueAccess;
import org.enginehub.piston.inject.Key;
import org.enginehub.piston.inject.MemoizingValueAccess;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Field;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;
import java.util.stream.Stream;
/**
* Indicates how the affected blocks should be hinted at in the log.
*/
@Retention(RetentionPolicy.RUNTIME)
@Target({
ElementType.PARAMETER,
ElementType.METHOD
})
@InjectAnnotation
public @interface Confirm {
Processor value() default Processor.ALWAYS;
enum Processor {
REGION {
@Override
public boolean passes(Actor actor, InjectedValueAccess context, double value) {
if (checkExisting(context)) {
return true;
}
Region region = context.injectedValue(Key.of(Region.class, Selection.class)).orElseThrow(IncompleteRegionException::new);
BlockVector3 pos1 = region.getMinimumPoint();
BlockVector3 pos2 = region.getMaximumPoint();
long area = (pos2.getX() - pos1.getX()) * (pos2.getZ() - pos1.getZ() + 1)
* (long) value;
long max = 2 << 18;
if (max != -1 && area > max) {
actor.print(Caption.of("fawe.cancel.worldedit.cancel.reason.confirm.region",
pos1, pos2, getArgs(context), region.getHeight() * area));
return confirm(actor, context);
}
return true;
}
},
RADIUS {
@Override
public boolean passes(Actor actor, InjectedValueAccess context, double value) {
if (checkExisting(context)) {
return true;
}
int max = WorldEdit.getInstance().getConfiguration().maxRadius;
if (max != -1 && value > max) {
actor.print(Caption.of("fawe.cancel.worldedit.cancel.reason.confirm.radius",
value, max, getArgs(context)));
return confirm(actor, context);
}
return true;
}
},
LIMIT {
@Override
public boolean passes(Actor actor, InjectedValueAccess context, double value) {
if (checkExisting(context)) {
return true;
}
int max = 50; //TODO configurable, get Key.of(Method.class) @Limit
if (max != -1 && value > max) {
actor.print(Caption.of("fawe.cancel.worldedit.cancel.reason.confirm.limit",
value, max, getArgs(context)));
return confirm(actor, context);
}
return true;
}
},
ALWAYS {
@Override
public boolean passes(Actor actor, InjectedValueAccess context, double value) {
if (checkExisting(context)) {
return true;
}
actor.print(TranslatableComponent.of("fawe.cancel.worldedit.cancel.reason.confirm"));
return confirm(actor, context);
}
};
public boolean passes(Actor actor, InjectedValueAccess context, double value) {
return true;
}
public <T extends Number> T check(Actor actor, InjectedValueAccess context, T value) {
boolean isSuggestion = context.injectedValue(Key.of(boolean.class)).orElse(false);
if (isSuggestion) {
return value;
}
if (checkExisting(context)) {
return value;
}
if (!passes(actor, context, value.doubleValue())) {
throw new StopExecutionException(TextComponent.empty());
}
return value;
}
private static String getArgs(InjectedValueAccess context) {
return context.injectedValue(Key.of(Arguments.class)).map(Arguments::get).get();
}
private static String getArg(InjectedValueAccess context, String def) {
Stream<Substring> split = CommandArgParser.forArgString(getArgs(context)).parseArgs();
Substring first = split.findFirst().orElse(null);
if (first == null && def == null) {
throw new StopExecutionException(TextComponent.of("No arguments"));
}
return first != null ? first.getSubstring() : def;
}
private static int getInt(InjectedValueAccess context, String def) {
return Integer.parseInt(getArg(context, def));
}
private static boolean confirm(Actor actor, InjectedValueAccess context) {
Event event = context.injectedValue(Key.of(Event.class)).orElse(null);
if (!(event instanceof CommandEvent)) {
return true;
}
ReentrantLock lock = new ReentrantLock();
Condition condition = lock.newCondition();
InterruptableCondition wait = new InterruptableCondition(lock, condition, Thread.currentThread());
try {
lock.lock();
actor.setMeta("cmdConfirm", wait);
try {
// This is really dumb but also stops the double //confirm requirement...
final MemoizingValueAccess memoizingValueAccess;
if (!(context instanceof MemoizingValueAccess)) {
if (!context.getClass().getSimpleName().contains("AutoValue_CommandParametersImpl")) {
return true;
}
memoizingValueAccess = (MemoizingValueAccess) Reflect.injectedValues.get(context);
} else {
memoizingValueAccess = (MemoizingValueAccess) context;
}
Map<Key<?>, Optional<?>> memory = (Map<Key<?>, Optional<?>>) Reflect.memory.get(memoizingValueAccess);
memory.put(Key.of(InterruptableCondition.class), Optional.of(wait));
} catch (IllegalAccessException e) {
e.printStackTrace();
}
// Waits till 15 seconds then returns false unless awakened
if (condition.await(15, TimeUnit.SECONDS)) {
return true;
}
} catch (InterruptedException ignored) {
} finally {
if (actor.getMeta("cmdConfirm") == wait) {
actor.deleteMeta("cmdConfirm");
}
}
return false;
}
boolean checkExisting(InjectedValueAccess context) {
Optional<InterruptableCondition> lock = context.injectedValue(Key.of(InterruptableCondition.class));
// lock if locked will be held by current thread unless something has gone REALLY wrong
// in which case this is the least of our worries...
return lock.isPresent();
}
}
class Reflect {
static final Field memory;
static final Field injectedValues;
static {
Field memoryField;
try {
memoryField = MemoizingValueAccess.class.getDeclaredField("memory");
memoryField.setAccessible(true);
} catch (NoSuchFieldException e) {
e.printStackTrace();
memoryField = null;
}
memory = memoryField;
Field injectedValuesField;
try {
Class<?> c = Class.forName("org.enginehub.piston.impl.AutoValue_CommandParametersImpl");
injectedValuesField = c.getDeclaredField("injectedValues");
injectedValuesField.setAccessible(true);
} catch (NoSuchFieldException | ClassNotFoundException e) {
e.printStackTrace();
injectedValuesField = null;
}
injectedValues = injectedValuesField;
}
}
}