1 files changed, 96 insertions, 0 deletions
diff --git a/dicore3/command/src/main/java/io/dico/dicore/command/ChildCommandAddress.java b/dicore3/command/src/main/java/io/dico/dicore/command/ChildCommandAddress.java
new file mode 100644
index 0000000..7593492
--- /dev/null
+++ b/dicore3/command/src/main/java/io/dico/dicore/command/ChildCommandAddress.java
@@ -0,0 +1,96 @@
+package io.dico.dicore.command;
+
+import io.dico.dicore.command.predef.HelpCommand;
+
+import java.util.*;
+
+public class ChildCommandAddress extends ModifiableCommandAddress {
+    ModifiableCommandAddress parent;
+    final List<String> namesModifiable = new ArrayList<>(4);
+    List<String> names = namesModifiable;
+    Command command;
+
+    public ChildCommandAddress() {
+    }
+
+    public ChildCommandAddress(Command command) {
+        this.command = command;
+    }
+
+    public ChildCommandAddress(Command command, String name, String... aliases) {
+        this(command);
+        addNameAndAliases(name, aliases);
+    }
+
+    public static ChildCommandAddress newPlaceHolderCommand(String name, String... aliases) {
+        ChildCommandAddress rv = new ChildCommandAddress(null, name, aliases);
+        HelpCommand.registerAsChild(rv);
+        return rv;
+    }
+
+    @Override
+    public boolean isRoot() {
+        return false;
+    }
+
+    @Override
+    public ModifiableCommandAddress getParent() {
+        return parent;
+    }
+
+    @Override
+    public Command getCommand() {
+        return command;
+    }
+
+    @Override
+    public void setCommand(Command command) {
+        if (hasUserDeclaredCommand()) {
+            throw new IllegalStateException("Command is already set at address \"" + getAddress() + "\"");
+        }
+        this.command = command;
+    }
+
+    @Override
+    public List<String> getNames() {
+        return names;
+    }
+
+    public void addNameAndAliases(String name, String... aliases) {
+        names.add(name);
+        names.addAll(Arrays.asList(aliases));
+    }
+
+    @Override
+    public String getMainKey() {
+        return namesModifiable.isEmpty() ? null : namesModifiable.get(0);
+    }
+
+    @Override
+    public String getAddress() {
+        ICommandAddress address = this;
+        int depth = getDepth();
+        String[] keys = new String[depth];
+        for (int i = depth - 1; i >= 0; i--) {
+            keys[i] = address.getMainKey();
+            address = address.getParent();
+        }
+        return String.join(" ", keys);
+    }
+
+    public void finalizeNames() {
+        if (names instanceof ArrayList) {
+            names = Collections.unmodifiableList(namesModifiable);
+        }
+    }
+
+    Iterator<String> modifiableNamesIterator() {
+        return namesModifiable.iterator();
+    }
+
+    void setParent(ModifiableCommandAddress parent) {
+        finalizeNames();
+        this.parent = parent;
+    }
+
+}