added the EnumCommandNode

Author: WizardlyBump17

commands/src/main/java/com/wizardlybump17/wlib/command/node/object/EnumCommandNode.java

@@ -0,0 +1,49 @@
+package com.wizardlybump17.wlib.command.node.object;
+
+import com.wizardlybump17.wlib.command.exception.InputParsingException;
+import com.wizardlybump17.wlib.command.executor.CommandNodeExecutor;
+import com.wizardlybump17.wlib.command.input.AllowedInputs;
+import com.wizardlybump17.wlib.command.node.CommandNode;
+import com.wizardlybump17.wlib.command.suggestion.Suggester;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.List;
+
+public class EnumCommandNode<E extends Enum<E>> extends CommandNode<E> {
+
+    private final @NotNull Class<E> enumType;
+
+    public EnumCommandNode(@NotNull String name, @NotNull List<CommandNode<?>> children, @NotNull AllowedInputs<E> allowedInputs, @Nullable Suggester<E> suggester, @Nullable CommandNodeExecutor<?> executor, @Nullable String permission, @NotNull Class<E> enumType) {
+        super(name, children, allowedInputs, suggester, executor, permission);
+        this.enumType = enumType;
+    }
+
+    @Override
+    public @Nullable E parse(@NotNull String input) throws InputParsingException {
+        try {
+            return Enum.valueOf(enumType, input.toUpperCase());
+        } catch (IllegalArgumentException e) {
+            throw new InputParsingException("Could not parse as " + enumType.getSimpleName() + ": " + input, e);
+        }
+    }
+
+    @Override
+    public @NotNull CommandNode<E> withChildren(@NotNull List<CommandNode<?>> children) {
+        return new EnumCommandNode<>(getName(), children, getAllowedInputs(), getSuggester(), getExecutor(), getPermission(), enumType);
+    }
+
+    @Override
+    public @NotNull CommandNode<E> withExecutor(@Nullable CommandNodeExecutor<?> executor) {
+        return new EnumCommandNode<>(getName(), getChildren(), getAllowedInputs(), getSuggester(), executor, getPermission(), enumType);
+    }
+
+    @Override
+    public @NotNull CommandNode<E> withPermission(@Nullable String permission) {
+        return new EnumCommandNode<>(getName(), getChildren(), getAllowedInputs(), getSuggester(), getExecutor(), permission, enumType);
+    }
+
+    public @NotNull Class<E> getEnumType() {
+        return enumType;
+    }
+}