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Timed expression evaluation

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Jesse Boyd 2017-02-14 09:01:32 +11:00
parent 760de4af24
commit 686e932943
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GPG Key ID: 59F1DE6293AF6E1F
1 changed files with 23 additions and 3 deletions
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26
core/src/main/java/com/sk89q/worldedit/command/UtilityCommands.java
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@ -21,6 +21,7 @@ package com.sk89q.worldedit.command;
import com.boydti.fawe.config.BBC;
import com.google.common.base.Joiner;
import com.google.common.util.concurrent.AtomicDouble;
import com.sk89q.minecraft.util.commands.Command;
import com.sk89q.minecraft.util.commands.CommandContext;
import com.sk89q.minecraft.util.commands.CommandException;
@ -64,9 +65,14 @@ import com.sk89q.worldedit.util.formatting.component.CommandListBox;
import com.sk89q.worldedit.util.formatting.component.CommandUsageBox;
import com.sk89q.worldedit.world.World;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import static com.sk89q.minecraft.util.commands.Logging.LogMode.PLACEMENT;
@ -516,10 +522,24 @@ public class UtilityCommands {
desc = "Evaluate a mathematical expression"
)
@CommandPermissions("worldedit.calc")
public void calc(Actor actor, @Text String input) throws CommandException {
public void calc(final Actor actor, @Text String input) throws CommandException {
try {
Expression expression = Expression.compile(input);
actor.print(BBC.getPrefix() + "= " + expression.evaluate());
final Expression expression = Expression.compile(input);
final AtomicDouble result = new AtomicDouble(Double.NaN);
ExecutorService executor = Executors.newSingleThreadExecutor();
try {
executor.invokeAll(Arrays.asList(new Callable<Object>() {
@Override
public Object call() throws Exception {
result.set(expression.evaluate());
return null;
}
}), 10, TimeUnit.SECONDS); // Timeout of 10 minutes.
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
executor.shutdown();
actor.print(BBC.getPrefix() + "= " + result);
} catch (EvaluationException e) {
actor.printError(String.format(
"'%s' could not be parsed as a valid expression", input));