79 lines
1.8 KiB
Java
79 lines
1.8 KiB
Java
package carpet.script.value;
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import carpet.script.Context;
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import carpet.script.LazyValue;
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import carpet.script.exception.InternalExpressionException;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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public class ThreadValue extends Value
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{
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CompletableFuture<Value> taskFuture;
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private long id;
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private static long sequence = 0L;
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private static final ExecutorService executorService = Executors.newCachedThreadPool();
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public ThreadValue(LazyValue expression, Context ctx)
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{
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id = sequence++;
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taskFuture = CompletableFuture.supplyAsync(
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() -> expression.evalValue(ctx),
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executorService
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);
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}
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@Override
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public String getString()
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{
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return taskFuture.getNow(Value.NULL).getString();
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}
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@Override
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public boolean getBoolean()
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{
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return taskFuture.getNow(Value.NULL).getBoolean();
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}
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public Value join()
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{
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try
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{
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return taskFuture.get();
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}
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catch (InterruptedException | ExecutionException e)
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{
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return Value.NULL;
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}
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}
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public boolean isFinished()
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{
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return taskFuture.isDone();
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}
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public void stop()
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{
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taskFuture.complete(Value.NULL);
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}
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@Override
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public boolean equals(Object o)
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{
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if (!(o instanceof ThreadValue))
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return false;
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return ((ThreadValue) o).id == this.id;
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}
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@Override
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public int compareTo(Value o)
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{
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if (!(o instanceof ThreadValue))
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throw new InternalExpressionException("Cannot compare ");
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return (int) (this.id - ((ThreadValue) o).id);
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}
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}
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