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✨ Allow command context to be retrieved using argument instances

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This commit is contained in:
Alexander Söderberg 2020-10-05 16:06:15 +02:00
parent 2067eac600
commit b564ecf60d
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1 changed files with 45 additions and 1 deletions
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44
cloud-core/src/main/java/cloud/commandframework/context/CommandContext.java
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@ -115,6 +115,24 @@ public final class CommandContext<C> {
}
}
/**
* Get a value from its key. Will return {@link Optional#empty()}
* if no value is stored with the given key
*
* @param argument Argument
* @param <T> Value type
* @return Value
*/
public <T> @NonNull Optional<T> getOptional(final @NonNull CommandArgument<C, T> argument) {
final Object value = this.internalStorage.get(argument.getName());
if (value != null) {
@SuppressWarnings("ALL") final T castedValue = (T) value;
return Optional.of(castedValue);
} else {
return Optional.empty();
}
}
/**
* Remove a stored value from the context
*
@ -142,6 +160,32 @@ public final class CommandContext<C> {
return (T) value;
}
/**
* Get a required argument from the context. This will thrown an exception
* if there's no value associated with the given argument
*
* @param argument The argument
* @param <T> Argument type
* @return Stored value
* @throws NullPointerException If no such value is stored
*/
public <T> @NonNull T get(final @NonNull CommandArgument<C, T> argument) {
return this.get(argument.getName());
}
/**
* Get a value if it exists, else return the provided default value
*
* @param argument Argument
* @param defaultValue Default value
* @param <T> Argument type
* @return Stored value, or supplied default value
*/
public <T> @Nullable T getOrDefault(final @NonNull CommandArgument<C, T> argument,
final @Nullable T defaultValue) {
return this.<T>getOptional(argument.getName()).orElse(defaultValue);
}
/**
* Get a value if it exists, else return the provided default value
*