Class Argument<T>

java.lang.Object
net.minestom.server.command.builder.arguments.Argument<T>
Type Parameters:
T - the type of this parsed argument
Direct Known Subclasses:
ArgumentBlockState, ArgumentBoolean, ArgumentColor, ArgumentCommand, ArgumentComponent, ArgumentEntity, ArgumentEnum, ArgumentGroup, ArgumentItemStack, ArgumentLiteral, ArgumentLoop, ArgumentNbtCompoundTag, ArgumentNbtTag, ArgumentNumber, ArgumentRange, ArgumentRegistry, ArgumentRelativeBlockPosition, ArgumentRelativeVec2, ArgumentRelativeVec3, ArgumentResource, ArgumentResourceLocation, ArgumentResourceOrTag, ArgumentString, ArgumentStringArray, ArgumentTime, ArgumentUUID, ArgumentWord
public abstract class Argument<T> extends Object
An argument is meant to be parsed when added into a Command's syntax with Command.addSyntax(CommandExecutor, Argument[]).

You can create your own with your own special conditions.

Arguments are parsed using parse(CommandSender, String).

  • Field Details

    • allowSpace

      protected final boolean allowSpace

    • useRemaining

      protected final boolean useRemaining

    • suggestionType

      @Nullable protected @Nullable SuggestionType suggestionType

  • Constructor Details

    • Argument

      public Argument(String id, boolean allowSpace, boolean useRemaining)
      Creates a new argument.
      Parameters:
      id - the id of the argument, used to retrieve the parsed value
      allowSpace - true if the argument can/should have spaces in it
      useRemaining - true if the argument will always take the rest of the command arguments

    • Argument

      public Argument(String id, boolean allowSpace)
      Creates a new argument with useRemaining sets to false.
      Parameters:
      id - the id of the argument, used to retrieve the parsed value
      allowSpace - true if the argument can/should have spaces in it

    • Argument

      public Argument(String id)
      Creates a new argument with useRemaining and allowSpace sets to false.
      Parameters:
      id - the id of the argument, used to retrieve the parsed value

  • Method Details

    • parse

      public static <T> T parse(CommandSender sender, Argument<T> argument) throws ArgumentSyntaxException
      Parses an argument, using getId() as the input
      Type Parameters:
      T - the result type
      Parameters:
      argument - the argument, with the input as id
      Returns:
      the parsed result
      Throws:
      ArgumentSyntaxException - if the argument cannot be parsed due to a fault input (argument id)

    • parse

      public abstract T parse(CommandSender sender, String input) throws ArgumentSyntaxException
      Parses the given input, and throw an ArgumentSyntaxException if the input cannot be converted to T
      Parameters:
      input - the argument to parse
      Returns:
      the parsed argument
      Throws:
      ArgumentSyntaxException - if value is not valid

    • parser

      public abstract ArgumentParserType parser()

    • nodeProperties

      public byte @Nullable [] nodeProperties()

    • suggestionType

      @Nullable public @Nullable SuggestionType suggestionType()

    • getId

      public String getId()
      Gets the ID of the argument, showed in-game above the chat bar and used to retrieve the data when the command is parsed in CommandContext.
      Returns:
      the argument id

    • allowSpace

      public boolean allowSpace()
      Gets if the argument can contain space.
      Returns:
      true if the argument allows space, false otherwise

    • useRemaining

      public boolean useRemaining()
      Gets if the argument always use all the remaining characters.

      ex: /help I am a test - will always give you "I am a test" if the first and single argument does use the remaining.

      Returns:
      true if the argument use all the remaining characters, false otherwise

    • getCallback

      @Nullable public @Nullable ArgumentCallback getCallback()
      Gets the ArgumentCallback to check if the argument-specific conditions are validated or not.
      Returns:
      the argument callback, null if not any

    • setCallback

      public void setCallback(@Nullable @Nullable ArgumentCallback callback)
      Sets the ArgumentCallback.
      Parameters:
      callback - the argument callback, null to do not have one

    • hasErrorCallback

      public boolean hasErrorCallback()
      Gets if the argument has any error callback.
      Returns:
      true if the argument has an error callback, false otherwise

    • isOptional

      public boolean isOptional()
      Gets if this argument is 'optional'.

      Optional means that this argument can be put at the end of a syntax and obtains a default value (getDefaultValue()).

      Returns:
      true if this argument is considered optional

    • getDefaultValue

      @Nullable public @Nullable Function<CommandSender, T> getDefaultValue()

    • setDefaultValue

      public Argument<T> setDefaultValue(@Nullable @Nullable Supplier<T> defaultValue)
      Sets the default value supplier of the argument.

      A non-null value means that the argument can be put at the end of a syntax to act as an optional one.

      Parameters:
      defaultValue - the default argument value, null to make the argument non-optional
      Returns:
      'this' for chaining

    • setDefaultValue

      public Argument<T> setDefaultValue(@Nullable @Nullable Function<CommandSender, T> defaultValue)

    • setDefaultValue

      public Argument<T> setDefaultValue(T defaultValue)
      Sets the default value supplier of the argument.
      Parameters:
      defaultValue - the default argument value
      Returns:
      'this' for chaining

    • getSuggestionCallback

      @Nullable public @Nullable SuggestionCallback getSuggestionCallback()
      Gets the suggestion callback of the argument
      Returns:
      the suggestion callback of the argument, null if it doesn't exist
      See Also:

    • setSuggestionCallback

      public Argument<T> setSuggestionCallback(SuggestionCallback suggestionCallback)
      Sets the suggestion callback (for dynamic tab completion) of this argument.

      Note: This will not automatically filter arguments by user input.

      Parameters:
      suggestionCallback - The suggestion callback to set.
      Returns:
      'this' for chaining

    • hasSuggestion

      public boolean hasSuggestion()
      Check if the argument has a suggestion.
      Returns:
      If this argument has a suggestion.

    • map

      public <O> Argument<O> map(Function<T,O> mapper)
      Maps this argument's output to another result.
      Type Parameters:
      O - The type of output expected.
      Parameters:
      mapper - The mapper to use (this argument's input = desired output)
      Returns:
      A new ArgumentMap that can get this complex object type.

    • map

      public <O> Argument<O> map(BiFunction<CommandSender, T, O> mapper)

    • filter

      @Experimental public Argument<T> filter(Predicate<T> predicate)
      Maps this argument's output to another result.
      Parameters:
      predicate - the argument predicate
      Returns:
      A new ArgumentMap that filters using this filterer.

    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object