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Use Guava for CommandDescription builder validation

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This commit is contained in:
ljacqu 2015-12-12 22:28:05 +01:00
parent 4d8d9de733
commit d26cbfbd14
1 changed files with 11 additions and 36 deletions
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47
src/main/java/fr/xephi/authme/command/CommandDescription.java
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@ -2,13 +2,13 @@ package fr.xephi.authme.command;
import fr.xephi.authme.permission.DefaultPermission;
import fr.xephi.authme.permission.PermissionNode;
import fr.xephi.authme.util.CollectionUtils;
import fr.xephi.authme.util.StringUtils;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import static com.google.common.base.Objects.firstNonNull;
import static com.google.common.base.Preconditions.checkArgument;
import static java.util.Arrays.asList;
/**
@ -220,15 +220,14 @@ public class CommandDescription {
* @return The generated CommandDescription object
*/
public CommandDescription build() {
return createInstance(
getOrThrow(labels, "labels"),
firstNonNull(description, ""),
firstNonNull(detailedDescription, ""),
getOrThrow(executableCommand, "executableCommand"),
firstNonNull(parent, null),
arguments,
permissions
);
checkArgument(!CollectionUtils.isEmpty(labels), "Labels may not be empty");
checkArgument(!StringUtils.isEmpty(description), "Description may not be empty");
checkArgument(!StringUtils.isEmpty(detailedDescription), "Detailed description may not be empty");
checkArgument(executableCommand != null, "Executable command must be set");
// parents and permissions may be null; arguments may be empty
return createInstance(labels, description, detailedDescription, executableCommand,
parent, arguments, permissions);
}
public CommandBuilder labels(List<String> labels) {
@ -277,33 +276,9 @@ public class CommandDescription {
public CommandBuilder permissions(DefaultPermission defaultPermission,
PermissionNode... permissionNodes) {
this.permissions = new CommandPermissions(asMutableList(permissionNodes), defaultPermission);
this.permissions = new CommandPermissions(asList(permissionNodes), defaultPermission);
return this;
}
@SafeVarargs
private static <T> List<T> asMutableList(T... items) {
return new ArrayList<>(asList(items));
}
private static <T> T getOrThrow(T element, String elementName) {
if (!isEmpty(element)) {
return element;
}
throw new RuntimeException("The element '" + elementName + "' may not be empty in CommandDescription");
}
private static <T> boolean isEmpty(T element) {
if (element == null) {
return true;
} else if (element instanceof Collection<?>) {
return ((Collection<?>) element).isEmpty();
} else if (element instanceof String) {
return StringUtils.isEmpty((String) element);
}
return false;
}
}
}