src/de/steamwar/command/AbstractGuardChecker.java

@@ -1,29 +0,0 @@
-/*
- * This file is a part of the SteamWar software.
- *
- * Copyright (C) 2020  SteamWar.de-Serverteam
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package de.steamwar.command;
-
-@Deprecated
-@FunctionalInterface
-public interface AbstractGuardChecker<T> {
-    /**
-     * While guarding the first parameter of the command the parameter s of this method is {@code null}
-     */
-    GuardResult guard(T t, GuardCheckType guardCheckType, String[] previousArguments, String s);
-}

src/de/steamwar/command/AbstractSWCommand.java

@@ -38,7 +38,6 @@ public abstract class AbstractSWCommand<T> {
     protected final List<SubCommand<T>> commandHelpList = new ArrayList<>();
 
     private final Map<String, AbstractTypeMapper<T, ?>> localTypeMapper = new HashMap<>();
-    private final Map<String, AbstractGuardChecker<T>> localGuardChecker = new HashMap<>();
     private final Map<String, AbstractValidator<T, ?>> localValidators = new HashMap<>();
 
     protected AbstractSWCommand(Class<T> clazz, String command) {
@@ -77,7 +76,8 @@ public abstract class AbstractSWCommand<T> {
                     errors.forEach(Runnable::run);
                     return;
                 }
-                commandHelpList.stream().anyMatch(s -> s.invoke((ignore) -> {}, sender, alias, args));
+                commandHelpList.stream().anyMatch(s -> s.invoke((ignore) -> {
+                }, sender, alias, args));
             }
         } catch (CommandNoHelpException e) {
             // Ignored
@@ -126,20 +126,6 @@ public abstract class AbstractSWCommand<T> {
                     SWCommandUtils.getMAPPER_FUNCTIONS().putIfAbsent(anno.value().getTypeName(), typeMapper);
                 }
             });
-            addGuard(Guard.class, method, i -> i == 0, false, AbstractGuardChecker.class, (anno, guardChecker) -> {
-                if (anno.local()) {
-                    localGuardChecker.putIfAbsent(anno.value(), (AbstractGuardChecker<T>) guardChecker);
-                } else {
-                    SWCommandUtils.getGUARD_FUNCTIONS().putIfAbsent(anno.value(), guardChecker);
-                }
-            });
-            addGuard(ClassGuard.class, method, i -> i == 0, false, AbstractGuardChecker.class, (anno, guardChecker) -> {
-                if (anno.local()) {
-                    localGuardChecker.putIfAbsent(anno.value().getTypeName(), (AbstractGuardChecker<T>) guardChecker);
-                } else {
-                    SWCommandUtils.getGUARD_FUNCTIONS().putIfAbsent(anno.value().getTypeName(), guardChecker);
-                }
-            });
             addValidator(Validator.class, method, i -> i == 0, false, AbstractValidator.class, (anno, validator) -> {
                 if (anno.local()) {
                     localValidators.putIfAbsent(anno.value(), (AbstractValidator<T, ?>) validator);
@@ -168,7 +154,7 @@ public abstract class AbstractSWCommand<T> {
                     commandSystemWarning(() -> "The method '" + method.toString() + "' is lacking the varArgs parameters of type '" + String.class.getTypeName() + "' as last Argument");
                     return;
                 }
-                commandHelpList.add(new SubCommand<>(this, method, anno.value(), new HashMap<>(), new HashMap<>(), localGuardChecker, true, null, anno.noTabComplete()));
+                commandHelpList.add(new SubCommand<>(this, method, anno.value(), new HashMap<>(), new HashMap<>(), true, null, anno.noTabComplete()));
             });
 
             add(Register.class, method, i -> i > 0, true, null, (anno, parameters) -> {
@@ -189,7 +175,7 @@ public abstract class AbstractSWCommand<T> {
                         return;
                     }
                 }
-                commandList.add(new SubCommand<>(this, method, anno.value(), localTypeMapper, localValidators, localGuardChecker, false, anno.description(), anno.noTabComplete()));
+                commandList.add(new SubCommand<>(this, method, anno.value(), localTypeMapper, localValidators, false, anno.description(), anno.noTabComplete()));
             });
         }
 
@@ -255,18 +241,6 @@ public abstract class AbstractSWCommand<T> {
         });
     }
 
-    @Deprecated
-    private <T extends Annotation> void addGuard(Class<T> annotation, Method method, IntPredicate parameterTester, boolean firstParameter, Class<?> returnType, BiConsumer<T, AbstractGuardChecker<?>> consumer) {
-        add(annotation, method, parameterTester, firstParameter, returnType, (anno, parameters) -> {
-            try {
-                method.setAccessible(true);
-                consumer.accept(anno, (AbstractGuardChecker<T>) method.invoke(this));
-            } catch (Exception e) {
-                throw new SecurityException(e.getMessage(), e);
-            }
-        });
-    }
-
     // TODO: Implement this when Message System is ready
     /*
     public void addDefaultHelpMessage(String message) {
@@ -327,24 +301,6 @@ public abstract class AbstractSWCommand<T> {
         boolean global() default false;
     }
 
-    @Deprecated
-    @Retention(RetentionPolicy.RUNTIME)
-    @Target({ElementType.PARAMETER, ElementType.METHOD})
-    protected @interface Guard {
-        String value() default "";
-
-        boolean local() default false;
-    }
-
-    @Deprecated
-    @Retention(RetentionPolicy.RUNTIME)
-    @Target({ElementType.METHOD})
-    protected @interface ClassGuard {
-        Class<?> value();
-
-        boolean local() default false;
-    }
-
     @Retention(RetentionPolicy.RUNTIME)
     @Target({ElementType.PARAMETER, ElementType.METHOD})
     protected @interface Validator {
@@ -371,10 +327,12 @@ public abstract class AbstractSWCommand<T> {
          * and can be set to true if you want to allow int as well as boolean as annotated parameter types.
          * The value array needs to be at least 2 long for this flag to be considered.
          * While using an int, the value will represent the index into the value array.
-         * While using a boolean, the value array must only be 2 long and the value will be {@code false}
-         * for the first index and {@code true} for the second index.
+         * While using a boolean, the {@link #falseValues()} defines which indices are
+         * considered {@code false} or {@code true}.
          */
         boolean allowISE() default false;
+
+        int[] falseValues() default { 0 };
     }
 
     @Retention(RetentionPolicy.RUNTIME)
@@ -384,6 +342,11 @@ public abstract class AbstractSWCommand<T> {
          * Will pe parsed against the TypeMapper specified by the parameter or annotation.
          */
         String value();
+
+        /**
+         * The method name stands for 'onlyUseIfNoneIsGiven'.
+         */
+        boolean onlyUINIG() default false;
     }
 
     @Retention(RetentionPolicy.RUNTIME)
@@ -399,4 +362,9 @@ public abstract class AbstractSWCommand<T> {
          */
         boolean allowEAs() default true;
     }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.PARAMETER})
+    protected @interface AllowNull {
+    }
 }

src/de/steamwar/command/AbstractValidator.java

@@ -19,6 +19,12 @@
 
 package de.steamwar.command;
 
+import lombok.RequiredArgsConstructor;
+
+import java.util.function.BooleanSupplier;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
 @FunctionalInterface
 public interface AbstractValidator<K, T> {
 
@@ -32,8 +38,57 @@ public interface AbstractValidator<K, T> {
      */
     boolean validate(K sender, T value, MessageSender messageSender);
 
+    default <C> Validator<C> validate(C value, MessageSender messageSender) {
+        return new Validator<>(value, messageSender);
+    }
+
+    @RequiredArgsConstructor
+    class Validator<C> {
+        private final C value;
+        private final MessageSender messageSender;
+
+        private boolean valid = true;
+
+        public <M> Validator<M> map(Function<C, M> mapper) {
+            return new Validator<>(mapper.apply(value), messageSender).set(valid);
+        }
+
+        public Validator<C> set(boolean value) {
+            this.valid = value;
+            return this;
+        }
+
+        public Validator<C> and(Predicate<C> predicate) {
+            valid &= predicate.test(value);
+            return this;
+        }
+
+        public Validator<C> or(Predicate<C> predicate) {
+            valid |= predicate.test(value);
+            return this;
+        }
+
+        public Validator<C> errorMessage(String s, Object... args) {
+            if (!valid) messageSender.send(s, args);
+            return this;
+        }
+
+        public boolean result() {
+            return valid;
+        }
+    }
+
     @FunctionalInterface
     interface MessageSender {
         void send(String s, Object... args);
+
+        default boolean send(boolean condition, String s, Object... args) {
+            if (condition) send(s, args);
+            return condition;
+        }
+
+        default boolean send(BooleanSupplier condition, String s, Object... args) {
+            return send(condition.getAsBoolean(), s, args);
+        }
     }
 }

src/de/steamwar/command/CommandPart.java

@@ -23,7 +23,6 @@ import lombok.AllArgsConstructor;
 import lombok.Setter;
 
 import java.lang.reflect.Array;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
@@ -42,24 +41,26 @@ class CommandPart<T> {
     private AbstractSWCommand<T> command;
     private AbstractTypeMapper<T, ?> typeMapper;
     private AbstractValidator<T, Object> validator;
-    private AbstractGuardChecker<T> guardChecker;
     private Class<?> varArgType;
     private String optional;
-    private GuardCheckType guardCheckType;
 
     private CommandPart<T> next = null;
 
     @Setter
     private boolean ignoreAsArgument = false;
 
-    public CommandPart(AbstractSWCommand<T> command, AbstractTypeMapper<T, ?> typeMapper, AbstractValidator<T, Object> validator, AbstractGuardChecker<T> guardChecker, Class<?> varArgType, String optional, GuardCheckType guardCheckType) {
+    @Setter
+    private boolean onlyUseIfNoneIsGiven = false;
+
+    @Setter
+    private boolean allowNullValues = false;
+
+    public CommandPart(AbstractSWCommand<T> command, AbstractTypeMapper<T, ?> typeMapper, AbstractValidator<T, Object> validator, Class<?> varArgType, String optional) {
         this.command = command;
         this.typeMapper = typeMapper;
         this.validator = validator;
-        this.guardChecker = guardChecker;
         this.varArgType = varArgType;
         this.optional = optional;
-        this.guardCheckType = guardCheckType;
 
         validatePart();
     }
@@ -72,9 +73,6 @@ class CommandPart<T> {
     }
 
     private void validatePart() {
-        if (guardCheckType == GuardCheckType.TAB_COMPLETE) {
-            throw new IllegalArgumentException("Tab complete is not allowed as a guard check type!");
-        }
         if (optional != null && varArgType != null) {
             throw new IllegalArgumentException("A vararg part can't have an optional part!");
         }
@@ -92,7 +90,7 @@ class CommandPart<T> {
         if (varArgType != null) {
             Object array = Array.newInstance(varArgType, args.length - startIndex);
             for (int i = startIndex; i < args.length; i++) {
-                CheckArgumentResult validArgument = checkArgument(null, null, sender, args, i);
+                CheckArgumentResult validArgument = checkArgument(null, sender, args, i);
                 if (!validArgument.success) {
                     throw new CommandParseException();
                 }
@@ -107,13 +105,19 @@ class CommandPart<T> {
             return;
         }
 
-        CheckArgumentResult validArgument = checkArgument(errors, null, sender, args, startIndex);
+        CheckArgumentResult validArgument = checkArgument(errors, sender, args, startIndex);
         if (!validArgument.success && optional == null) {
             throw new CommandParseException();
         }
         if (!validArgument.success) {
             if (!ignoreAsArgument) {
-                current.add(typeMapper.map(sender, EMPTY_ARRAY, optional));
+                if (!onlyUseIfNoneIsGiven) {
+                    current.add(typeMapper.map(sender, EMPTY_ARRAY, optional));
+                } else if(startIndex >= args.length) {
+                    current.add(typeMapper.map(sender, EMPTY_ARRAY, optional));
+                } else {
+                    throw new CommandParseException();
+                }
             }
             if (next != null) {
                 next.generateArgumentArray(errors, current, sender, args, startIndex);
@@ -128,43 +132,10 @@ class CommandPart<T> {
         }
     }
 
-    public boolean guardCheck(T sender, String[] args, int startIndex) {
-        if (varArgType != null) {
-            for (int i = startIndex; i < args.length; i++) {
-                GuardResult guardResult = checkGuard(guardCheckType, sender, args, i);
-                if (guardResult == GuardResult.DENIED) {
-                    throw new CommandNoHelpException();
-                }
-                if (guardResult == GuardResult.DENIED_WITH_HELP) {
-                    return false;
-                }
-            }
-            return true;
-        }
-
-        GuardResult guardResult = checkGuard(guardCheckType, sender, args, startIndex);
-        if (guardResult == GuardResult.DENIED) {
-            if (optional != null && next != null) {
-                return next.guardCheck(sender, args, startIndex);
-            }
-            throw new CommandNoHelpException();
-        }
-        if (guardResult == GuardResult.DENIED_WITH_HELP) {
-            if (optional != null && next != null) {
-                return next.guardCheck(sender, args, startIndex);
-            }
-            return false;
-        }
-        if (next != null) {
-            return next.guardCheck(sender, args, startIndex + 1);
-        }
-        return true;
-    }
-
     public void generateTabComplete(List<String> current, T sender, String[] args, int startIndex) {
         if (varArgType != null) {
             for (int i = startIndex; i < args.length - 1; i++) {
-                CheckArgumentResult validArgument = checkArgument((ignore) -> {}, GuardCheckType.TAB_COMPLETE, sender, args, i);
+                CheckArgumentResult validArgument = checkArgument((ignore) -> {}, sender, args, i);
                 if (!validArgument.success) {
                     return;
                 }
@@ -177,7 +148,7 @@ class CommandPart<T> {
         }
 
         if (args.length - 1 > startIndex) {
-            CheckArgumentResult checkArgumentResult = checkArgument((ignore) -> {}, GuardCheckType.TAB_COMPLETE, sender, args, startIndex);
+            CheckArgumentResult checkArgumentResult = checkArgument((ignore) -> {}, sender, args, startIndex);
             if (checkArgumentResult.success && next != null) {
                 next.generateTabComplete(current, sender, args, startIndex + 1);
                 return;
@@ -203,7 +174,7 @@ class CommandPart<T> {
         });
     }
 
-    private CheckArgumentResult checkArgument(Consumer<Runnable> errors, GuardCheckType guardCheckType, T sender, String[] args, int index) {
+    private CheckArgumentResult checkArgument(Consumer<Runnable> errors, T sender, String[] args, int index) {
         try {
             Object value = typeMapper.map(sender, Arrays.copyOf(args, index), args[index]);
             if (validator != null && errors != null) {
@@ -214,31 +185,10 @@ class CommandPart<T> {
                 })) {
                     return new CheckArgumentResult(false, null);
                 }
-                return new CheckArgumentResult(value != null, value);
-            }
-            if (value == null) {
-                return new CheckArgumentResult(false, null);
-            }
-
-            GuardResult guardResult = checkGuard(guardCheckType, sender, args, index);
-            switch (guardResult) {
-                case ALLOWED:
-                    return new CheckArgumentResult(true, value);
-                case DENIED:
-                    throw new CommandNoHelpException();
-                case DENIED_WITH_HELP:
-                default:
-                    return new CheckArgumentResult(false, null);
             }
+            return new CheckArgumentResult(allowNullValues || value != null, value);
         } catch (Exception e) {
             return new CheckArgumentResult(false, null);
         }
     }
-
-    private GuardResult checkGuard(GuardCheckType guardCheckType, T sender, String[] args, int index) {
-        if (guardChecker != null && guardCheckType != null) {
-            return guardChecker.guard(sender, guardCheckType, Arrays.copyOf(args, index), args[index]);
-        }
-        return GuardResult.ALLOWED;
-    }
 }

src/de/steamwar/command/GuardCheckType.java

@@ -1,27 +0,0 @@
-/*
- * This file is a part of the SteamWar software.
- *
- * Copyright (C) 2020  SteamWar.de-Serverteam
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package de.steamwar.command;
-
-@Deprecated
-public enum GuardCheckType {
-    COMMAND,
-    HELP_COMMAND,
-    TAB_COMPLETE
-}

src/de/steamwar/command/GuardResult.java

@@ -1,27 +0,0 @@
-/*
- * This file is a part of the SteamWar software.
- *
- * Copyright (C) 2020  SteamWar.de-Serverteam
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package de.steamwar.command;
-
-@Deprecated
-public enum GuardResult {
-    ALLOWED,
-    DENIED_WITH_HELP,
-    DENIED
-}

src/de/steamwar/command/SWCommandUtils.java

@@ -37,10 +37,6 @@ public class SWCommandUtils {
     @Getter
     private final Map<String, AbstractTypeMapper<?, ?>> MAPPER_FUNCTIONS = new HashMap<>();
 
-    @Getter
-    @Deprecated
-    private final Map<String, AbstractGuardChecker<?>> GUARD_FUNCTIONS = new HashMap<>();
-
     @Getter
     private final Map<String, AbstractValidator<?, ?>> VALIDATOR_FUNCTIONS = new HashMap<>();
 
@@ -78,11 +74,11 @@ public class SWCommandUtils {
         MAPPER_FUNCTIONS.put(alternativeClazz.getTypeName(), mapper);
     }
 
-    static <T> CommandPart<T> generateCommandPart(AbstractSWCommand<T> command, boolean help, String[] subCommand, Parameter[] parameters, Map<String, AbstractTypeMapper<T, ?>> localTypeMapper, Map<String, AbstractValidator<T, ?>> localValidator, Map<String, AbstractGuardChecker<T>> localGuardChecker) {
+    static <T> CommandPart<T> generateCommandPart(AbstractSWCommand<T> command, boolean help, String[] subCommand, Parameter[] parameters, Map<String, AbstractTypeMapper<T, ?>> localTypeMapper, Map<String, AbstractValidator<T, ?>> localValidator) {
         CommandPart<T> first = null;
         CommandPart<T> current = null;
         for (String s : subCommand) {
-            CommandPart commandPart = new CommandPart(command, createMapper(s), null, null, null, null, help ? GuardCheckType.HELP_COMMAND : GuardCheckType.COMMAND);
+            CommandPart commandPart = new CommandPart(command, createMapper(s), null, null, null);
             commandPart.setIgnoreAsArgument(true);
             if (current != null) {
                 current.setNext(commandPart);
@@ -96,11 +92,13 @@ public class SWCommandUtils {
             Parameter parameter = parameters[i];
             AbstractTypeMapper<T, ?> typeMapper = getTypeMapper(parameter, localTypeMapper);
             AbstractValidator<T, Object> validator = (AbstractValidator<T, Object>) getValidator(parameter, localValidator);
-            AbstractGuardChecker<T> guardChecker = getGuardChecker(parameter, localGuardChecker);
             Class<?> varArgType = parameter.isVarArgs() ? parameter.getType().getComponentType() : null;
             AbstractSWCommand.OptionalValue optionalValue = parameter.getAnnotation(AbstractSWCommand.OptionalValue.class);
+            AbstractSWCommand.AllowNull allowNull = parameter.getAnnotation(AbstractSWCommand.AllowNull.class);
 
-            CommandPart<T> commandPart = new CommandPart<>(command, typeMapper, validator, guardChecker, varArgType, optionalValue != null ? optionalValue.value() : null, help ? GuardCheckType.HELP_COMMAND : GuardCheckType.COMMAND);
+            CommandPart<T> commandPart = new CommandPart<>(command, typeMapper, validator, varArgType, optionalValue != null ? optionalValue.value() : null);
+            commandPart.setOnlyUseIfNoneIsGiven(optionalValue != null && optionalValue.onlyUINIG());
+            commandPart.setAllowNullValues(allowNull != null);
             if (current != null) {
                 current.setNext(commandPart);
             }
@@ -136,25 +134,20 @@ public class SWCommandUtils {
                     return createMapper(staticValue.value());
                 }
                 if (staticValue.allowISE()) {
-                    if ((parameter.getType() == boolean.class || parameter.getType() == Boolean.class) && staticValue.value().length == 2) {
+                    if ((parameter.getType() == boolean.class || parameter.getType() == Boolean.class)) {
                         List<String> tabCompletes = new ArrayList<>(Arrays.asList(staticValue.value()));
+                        Set<Integer> falseValues = new HashSet<>();
+                        for (int i : staticValue.falseValues()) falseValues.add(i);
                         return createMapper(s -> {
                             int index = tabCompletes.indexOf(s);
-                            return index == -1 ? null : index != 0;
+                            return index == -1 ? null : !falseValues.contains(index);
                         }, (commandSender, s) -> tabCompletes);
                     }
-                    if ((parameter.getType() == int.class || parameter.getType() == Integer.class) && staticValue.value().length >= 2) {
+                    if ((parameter.getType() == int.class || parameter.getType() == Integer.class || parameter.getType() == long.class || parameter.getType() == Long.class) && staticValue.value().length >= 2) {
                         List<String> tabCompletes = new ArrayList<>(Arrays.asList(staticValue.value()));
                         return createMapper(s -> {
-                            int index = tabCompletes.indexOf(s);
-                            return index == -1 ? null : index;
-                        }, (commandSender, s) -> tabCompletes);
-                    }
-                    if ((parameter.getType() == long.class || parameter.getType() == Long.class) && staticValue.value().length >= 2) {
-                        List<String> tabCompletes = new ArrayList<>(Arrays.asList(staticValue.value()));
-                        return createMapper(s -> {
-                            long index = tabCompletes.indexOf(s);
-                            return index == -1 ? null : index;
+                            Number index = tabCompletes.indexOf(s);
+                            return index.longValue() == -1 ? null : index;
                         }, (commandSender, s) -> tabCompletes);
                     }
                 }
@@ -208,40 +201,6 @@ public class SWCommandUtils {
         return validator;
     }
 
-    @Deprecated
-    public static <T> AbstractGuardChecker<T> getGuardChecker(Parameter parameter, Map<String, AbstractGuardChecker<T>> localGuardChecker) {
-        Class<?> clazz = parameter.getType();
-        if (parameter.isVarArgs()) {
-            clazz = clazz.getComponentType();
-        }
-
-        AbstractSWCommand.ClassGuard classGuard = parameter.getAnnotation(AbstractSWCommand.ClassGuard.class);
-        if (classGuard != null) {
-            if (classGuard.value() != null) {
-                return getGuardChecker(classGuard.value().getTypeName(), localGuardChecker);
-            }
-            return getGuardChecker(clazz.getTypeName(), localGuardChecker);
-        }
-
-        AbstractSWCommand.Guard guard = parameter.getAnnotation(AbstractSWCommand.Guard.class);
-        if (guard != null) {
-            if (guard.value() != null && !guard.value().isEmpty()) {
-                return getGuardChecker(guard.value(), localGuardChecker);
-            }
-            return getGuardChecker(clazz.getTypeName(), localGuardChecker);
-        }
-        return null;
-    }
-
-    @Deprecated
-    private static <T> AbstractGuardChecker<T> getGuardChecker(String s, Map<String, AbstractGuardChecker<T>> localGuardChecker) {
-        AbstractGuardChecker<T> guardChecker = localGuardChecker.getOrDefault(s, (AbstractGuardChecker<T>) GUARD_FUNCTIONS.getOrDefault(s, null));
-        if (guardChecker == null) {
-            throw new IllegalArgumentException("No guard found for " + s);
-        }
-        return guardChecker;
-    }
-
     public static <K, T> void addMapper(Class<T> clazz, AbstractTypeMapper<K, T> mapper) {
         addMapper(clazz.getTypeName(), mapper);
     }
@@ -258,16 +217,6 @@ public class SWCommandUtils {
         VALIDATOR_FUNCTIONS.putIfAbsent(name, validator);
     }
 
-    @Deprecated
-    public static <T> void addGuard(Class<?> clazz, AbstractGuardChecker<T> guardChecker) {
-        addGuard(clazz.getTypeName(), guardChecker);
-    }
-
-    @Deprecated
-    public static <T> void addGuard(String name, AbstractGuardChecker<T> guardChecker) {
-        GUARD_FUNCTIONS.putIfAbsent(name, guardChecker);
-    }
-
     public static <T extends AbstractTypeMapper<K, String>, K> T createMapper(String... values) {
         List<String> strings = Arrays.stream(values).map(String::toLowerCase).collect(Collectors.toList());
         List<String> tabCompletes = Arrays.asList(values);

src/de/steamwar/command/SWTypeMapperCreator.java

@@ -19,10 +19,10 @@
 
 package de.steamwar.command;
 
-import java.util.List;
+import java.util.Collection;
 import java.util.function.BiFunction;
 import java.util.function.Function;
 
 public interface SWTypeMapperCreator<T extends AbstractTypeMapper<K, V>, K, V> {
-    T createTypeMapper(Function<String, V> mapper, BiFunction<K, String, List<String>> tabCompleter);
+    T createTypeMapper(Function<String, V> mapper, BiFunction<K, String, Collection<String>> tabCompleter);
 }

src/de/steamwar/command/SubCommand.java

@@ -38,13 +38,12 @@ public class SubCommand<T> {
     private Predicate<T> senderPredicate;
     private Function<T, ?> senderFunction;
     AbstractValidator<T, T> validator;
-    AbstractGuardChecker<T> guardChecker;
     boolean noTabComplete;
     int comparableValue;
 
     private CommandPart<T> commandPart;
 
-    SubCommand(AbstractSWCommand<T> abstractSWCommand, Method method, String[] subCommand, Map<String, AbstractTypeMapper<T, ?>> localTypeMapper, Map<String, AbstractValidator<T, ?>> localValidator, Map<String, AbstractGuardChecker<T>> localGuardChecker, boolean help, String[] description, boolean noTabComplete) {
+    SubCommand(AbstractSWCommand<T> abstractSWCommand, Method method, String[] subCommand, Map<String, AbstractTypeMapper<T, ?>> localTypeMapper, Map<String, AbstractValidator<T, ?>> localValidator, boolean help, String[] description, boolean noTabComplete) {
         this.abstractSWCommand = abstractSWCommand;
         this.method = method;
         this.subCommand = subCommand;
@@ -55,9 +54,8 @@ public class SubCommand<T> {
         comparableValue = parameters[parameters.length - 1].isVarArgs() ? Integer.MAX_VALUE : -parameters.length;
 
         validator = (AbstractValidator<T, T>) SWCommandUtils.getValidator(parameters[0], localValidator);
-        guardChecker = SWCommandUtils.getGuardChecker(parameters[0], localGuardChecker);
 
-        commandPart = SWCommandUtils.generateCommandPart(abstractSWCommand, help, subCommand, parameters, localTypeMapper, localValidator, localGuardChecker);
+        commandPart = SWCommandUtils.generateCommandPart(abstractSWCommand, help, subCommand, parameters, localTypeMapper, localValidator);
 
         senderPredicate = t -> parameters[0].getType().isAssignableFrom(t.getClass());
         senderFunction = t -> parameters[0].getType().cast(t);
@@ -77,18 +75,7 @@ public class SubCommand<T> {
                     if (!validator.validate(sender, sender, (s, objectArgs) -> {
                         abstractSWCommand.sendMessage(sender, s, objectArgs);
                     })) {
-                        throw new CommandNoHelpException();
-                    }
-                } else if (guardChecker != null) {
-                    GuardResult guardResult = guardChecker.guard(sender, GuardCheckType.COMMAND, new String[0], null);
-                    switch (guardResult) {
-                        case ALLOWED:
-                            break;
-                        case DENIED:
-                            throw new CommandNoHelpException();
-                        case DENIED_WITH_HELP:
-                        default:
-                            return true;
+                        return false;
                     }
                 }
                 method.setAccessible(true);
@@ -100,21 +87,9 @@ public class SubCommand<T> {
                     if (!validator.validate(sender, sender, (s, objectArgs) -> {
                         abstractSWCommand.sendMessage(sender, s, objectArgs);
                     })) {
-                        throw new CommandNoHelpException();
-                    }
-                } else if (guardChecker != null) {
-                    GuardResult guardResult = guardChecker.guard(sender, GuardCheckType.COMMAND, new String[0], null);
-                    switch (guardResult) {
-                        case ALLOWED:
-                            break;
-                        case DENIED:
-                            throw new CommandNoHelpException();
-                        case DENIED_WITH_HELP:
-                        default:
-                            return true;
+                        return false;
                     }
                 }
-                commandPart.guardCheck(sender, args, 0);
                 objects.add(0, senderFunction.apply(sender));
                 method.setAccessible(true);
                 method.invoke(abstractSWCommand, objects.toArray());
@@ -138,8 +113,6 @@ public class SubCommand<T> {
             })) {
                 return null;
             }
-        } else if (guardChecker != null && guardChecker.guard(sender, GuardCheckType.TAB_COMPLETE, new String[0], null) != GuardResult.ALLOWED) {
-            return null;
         }
         if (commandPart == null) {
             return null;

src/de/steamwar/command/TabCompletionCache.java

@@ -24,6 +24,7 @@ import lombok.EqualsAndHashCode;
 import lombok.experimental.UtilityClass;
 
 import java.util.*;
+import java.util.concurrent.TimeUnit;
 import java.util.function.Supplier;
 
 @UtilityClass
@@ -36,12 +37,16 @@ public class TabCompletionCache {
 
     void add(AbstractTypeMapper<?, ?> typeMapper, AbstractSWCommand.Cached cached) {
         if (cached != null) {
-            TabCompletionCache.cached.add(typeMapper);
-            if (cached.global()) TabCompletionCache.global.add(typeMapper);
-            TabCompletionCache.cacheDuration.put(typeMapper, cached.timeUnit().toMillis(cached.cacheDuration()));
+            add(typeMapper, cached.global(), cached.cacheDuration(), cached.timeUnit());
         }
     }
 
+    public void add(AbstractTypeMapper<?, ?> typeMapper, boolean global, long cacheDuration, TimeUnit timeUnit) {
+        TabCompletionCache.cached.add(typeMapper);
+        if (global) TabCompletionCache.global.add(typeMapper);
+        TabCompletionCache.cacheDuration.put(typeMapper, timeUnit.toMillis(cacheDuration));
+    }
+
     @EqualsAndHashCode
     @AllArgsConstructor
     private static class Key {

testsrc/de/steamwar/command/GuardCommand.java

@@ -1,43 +0,0 @@
-/*
- * This file is a part of the SteamWar software.
- *
- * Copyright (C) 2020  SteamWar.de-Serverteam
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package de.steamwar.command;
-
-import de.steamwar.command.dto.ExecutionIdentifier;
-import de.steamwar.command.dto.TestGuardChecker;
-import de.steamwar.command.dto.TestSWCommand;
-
-public class GuardCommand extends TestSWCommand {
-
-    public GuardCommand() {
-        super("typemapper");
-    }
-
-    @Register
-    public void test(@Guard String sender) {
-        throw new ExecutionIdentifier("RunTypeMapper");
-    }
-
-    @ClassGuard(value = String.class, local = true)
-    public AbstractGuardChecker<String> getGuardChecker() {
-        return (TestGuardChecker) (s, guardCheckType, previousArguments, s2) -> {
-            throw new ExecutionIdentifier("GuardChecker " + guardCheckType);
-        };
-    }
-}

testsrc/de/steamwar/command/NullMapperCommand.java

@@ -0,0 +1,59 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.command;
+
+import de.steamwar.command.dto.ExecutionIdentifier;
+import de.steamwar.command.dto.TestSWCommand;
+import de.steamwar.command.dto.TestTypeMapper;
+
+import java.util.Collection;
+
+public class NullMapperCommand extends TestSWCommand {
+
+    public NullMapperCommand() {
+        super("nullmapper");
+    }
+
+    @Register
+    public void test(String sender, @AllowNull String arg) {
+        if (arg == null) {
+            throw new ExecutionIdentifier("null");
+        }
+        throw new ExecutionIdentifier("notnull");
+    }
+
+    @ClassMapper(value = String.class, local = true)
+    public TestTypeMapper<String> typeMapper() {
+        return new TestTypeMapper<String>() {
+            @Override
+            public String map(String sender, String[] previousArguments, String s) {
+                if (s.equals("Hello World")) {
+                    return null;
+                }
+                return s;
+            }
+
+            @Override
+            public Collection<String> tabCompletes(String sender, String[] previousArguments, String s) {
+                return null;
+            }
+        };
+    }
+}

testsrc/de/steamwar/command/NullMapperCommandTest.java

@@ -1,7 +1,7 @@
 /*
  * This file is a part of the SteamWar software.
  *
- * Copyright (C) 2020  SteamWar.de-Serverteam
+ * Copyright (C) 2022  SteamWar.de-Serverteam
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as published by
@@ -24,29 +24,29 @@ import org.junit.Test;
 
 import static de.steamwar.AssertionUtils.assertCMDFramework;
 import static org.hamcrest.MatcherAssert.assertThat;
-import static org.hamcrest.Matchers.instanceOf;
 import static org.hamcrest.Matchers.is;
 
-public class GuardCommandTest {
+public class NullMapperCommandTest {
 
     @Test
-    public void test() {
-        GuardCommand cmd = new GuardCommand();
+    public void testNull() {
+        NullMapperCommand command = new NullMapperCommand();
         try {
-            cmd.execute("test", "", new String[0]);
+            command.execute("test", "", new String[] {"Hello World"});
+            assertThat(true, is(false));
         } catch (Exception e) {
-            assertThat(e.getMessage(), is("GuardChecker COMMAND"));
+            assertCMDFramework(e, ExecutionIdentifier.class, "null");
         }
     }
 
     @Test
-    public void testTabComplete() {
-        GuardCommand cmd = new GuardCommand();
+    public void testNonNull() {
+        NullMapperCommand command = new NullMapperCommand();
         try {
-            cmd.tabComplete("test", "", new String[]{""});
+            command.execute("test", "", new String[] {"Hello"});
+            assertThat(true, is(false));
         } catch (Exception e) {
-            assertThat(e, is(instanceOf(ExecutionIdentifier.class)));
-            assertThat(e.getMessage(), is("GuardChecker TAB_COMPLETE"));
+            assertCMDFramework(e, ExecutionIdentifier.class, "notnull");
         }
     }
 }

testsrc/de/steamwar/command/StaticValueCommand.java

@@ -0,0 +1,55 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.command;
+
+import de.steamwar.command.dto.ExecutionIdentifier;
+import de.steamwar.command.dto.TestSWCommand;
+
+public class StaticValueCommand extends TestSWCommand {
+
+    public StaticValueCommand() {
+        super("staticvalue");
+    }
+
+    @Register
+    public void defaultStaticValue(String s, @StaticValue({"hello", "world"}) String staticValue) {
+        throw new ExecutionIdentifier("RunStaticValue with " + staticValue);
+    }
+
+    @Register
+    public void booleanStaticValue(String s, @StaticValue(value = {"-a", "-b", "-c"}, allowISE = true) boolean staticValue) {
+        throw new ExecutionIdentifier("RunStaticValue with " + staticValue);
+    }
+
+    @Register
+    public void booleanStaticValueOtherFalseValue(String s, @StaticValue(value = {"-d", "-e", "-f"}, allowISE = true, falseValues = { 1 }) boolean staticValue) {
+        throw new ExecutionIdentifier("RunStaticValue with " + staticValue);
+    }
+
+    @Register
+    public void intStaticValue(String s, @StaticValue(value = {"-g", "-h", "-i"}, allowISE = true) int staticValue) {
+        throw new ExecutionIdentifier("RunStaticValue with int " + staticValue);
+    }
+
+    @Register
+    public void longStaticValue(String s, @StaticValue(value = {"-j", "-k", "-l"}, allowISE = true) long staticValue) {
+        throw new ExecutionIdentifier("RunStaticValue with long " + staticValue);
+    }
+}

testsrc/de/steamwar/command/StaticValueCommandTest.java

@@ -0,0 +1,133 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.command;
+
+import de.steamwar.command.dto.ExecutionIdentifier;
+import org.junit.Test;
+
+import java.util.List;
+
+import static de.steamwar.AssertionUtils.assertCMDFramework;
+import static de.steamwar.AssertionUtils.assertTabCompletes;
+
+public class StaticValueCommandTest {
+
+    @Test
+    public void tabCompletionTest() {
+        StaticValueCommand cmd = new StaticValueCommand();
+        List<String> strings = cmd.tabComplete("", "", new String[]{""});
+        assertTabCompletes(strings, "hello", "world", "-a", "-b", "-c", "-d", "-e", "-f", "-g", "-h", "-i", "-j", "-k", "-l");
+    }
+
+    @Test
+    public void defaultTest() {
+        StaticValueCommand cmd = new StaticValueCommand();
+        try {
+            cmd.execute("", "", new String[] {"hello"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with hello");
+        }
+        try {
+            cmd.execute("", "", new String[] {"world"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with world");
+        }
+    }
+
+    @Test
+    public void booleanTest() {
+        StaticValueCommand cmd = new StaticValueCommand();
+        try {
+            cmd.execute("", "", new String[] {"-a"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with false");
+        }
+        try {
+            cmd.execute("", "", new String[] {"-b"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with true");
+        }
+        try {
+            cmd.execute("", "", new String[] {"-c"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with true");
+        }
+    }
+
+    @Test
+    public void booleanOtherFalseTest() {
+        StaticValueCommand cmd = new StaticValueCommand();
+        try {
+            cmd.execute("", "", new String[] {"-d"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with true");
+        }
+        try {
+            cmd.execute("", "", new String[] {"-e"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with false");
+        }
+        try {
+            cmd.execute("", "", new String[] {"-f"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with true");
+        }
+    }
+
+    @Test
+    public void intTest() {
+        StaticValueCommand cmd = new StaticValueCommand();
+        try {
+            cmd.execute("", "", new String[] {"-g"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with int 0");
+        }
+        try {
+            cmd.execute("", "", new String[] {"-h"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with int 1");
+        }
+        try {
+            cmd.execute("", "", new String[] {"-i"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with int 2");
+        }
+    }
+
+    @Test
+    public void longTest() {
+        StaticValueCommand cmd = new StaticValueCommand();
+        try {
+            cmd.execute("", "", new String[] {"-j"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with long 0");
+        }
+        try {
+            cmd.execute("", "", new String[] {"-k"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with long 1");
+        }
+        try {
+            cmd.execute("", "", new String[] {"-l"});
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunStaticValue with long 2");
+        }
+    }
+}

testsrc/de/steamwar/command/ValidatorCommand.java

@@ -43,11 +43,13 @@ public class ValidatorCommand extends TestSWCommand {
 
     @Register
     public void onError(String sender, @ErrorMessage("Hello World") int error) {
+        System.out.println("onError: " + sender + " " + error);
         throw new ExecutionIdentifier("RunOnError");
     }
 
     @Register
     public void onError(String sender, double error) {
+        System.out.println("onError: " + sender + " " + error);
         throw new ExecutionIdentifier("RunOnErrorDouble");
     }
 

testsrc/de/steamwar/command/dto/TestGuardChecker.java

@@ -1,25 +0,0 @@
-/*
- * This file is a part of the SteamWar software.
- *
- * Copyright (C) 2020  SteamWar.de-Serverteam
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package de.steamwar.command.dto;
-
-import de.steamwar.command.AbstractGuardChecker;
-
-public interface TestGuardChecker extends AbstractGuardChecker<String> {
-}