Changed the Runnable to a Command

src/main/java/net/minecraft/commands/Command.java

@@ -0,0 +1,7 @@
+package net.minecraft.commands;
+
+import net.minecraft.commands.context.CommandContext;
+
+public interface Command {
+    void run(CommandContext context);
+}

src/main/java/net/minecraft/commands/CommandDispatcher.java

@@ -2,10 +2,13 @@ package net.minecraft.commands;
 
 import com.google.common.collect.Maps;
 import net.minecraft.commands.builder.LiteralArgumentBuilder;
+import net.minecraft.commands.context.CommandContext;
+import net.minecraft.commands.context.ParsedArgument;
 import net.minecraft.commands.exceptions.CommandException;
 import net.minecraft.commands.exceptions.UnknownCommandException;
 import net.minecraft.commands.tree.LiteralCommandNode;
 
+import java.util.HashMap;
 import java.util.Map;
 
 public class CommandDispatcher {
@@ -24,6 +27,6 @@ public class CommandDispatcher {
             throw new UnknownCommandException();
         }
 
-        node.getExecutor().run();
+        node.getCommand().run(new CommandContext(new HashMap<String, ParsedArgument<?>>()));
     }
 }

src/main/java/net/minecraft/commands/builder/ArgumentBuilder.java

@@ -1,13 +1,14 @@
 package net.minecraft.commands.builder;
 
 import com.google.common.collect.Lists;
+import net.minecraft.commands.Command;
 import net.minecraft.commands.tree.CommandNode;
 
 import java.util.List;
 
 public abstract class ArgumentBuilder<T extends ArgumentBuilder<?>> {
     private final List<ArgumentBuilder> arguments = Lists.newArrayList();
-    private Runnable executor;
+    private Command command;
 
     protected abstract T getThis();
 
@@ -20,13 +21,13 @@ public abstract class ArgumentBuilder<T extends ArgumentBuilder<?>> {
         return arguments;
     }
 
-    public T executes(Runnable executor) {
-        this.executor = executor;
+    public T executes(Command command) {
+        this.command = command;
         return getThis();
     }
 
-    public Runnable getExecutor() {
-        return executor;
+    public Command getCommand() {
+        return command;
     }
 
     public abstract CommandNode build();

src/main/java/net/minecraft/commands/builder/LiteralArgumentBuilder.java

@@ -24,7 +24,7 @@ public class LiteralArgumentBuilder extends ArgumentBuilder<LiteralArgumentBuild
 
     @Override
     public LiteralCommandNode build() {
-        LiteralCommandNode result = new LiteralCommandNode(getLiteral(), getExecutor());
+        LiteralCommandNode result = new LiteralCommandNode(getLiteral(), getCommand());
 
         for (ArgumentBuilder argument : getArguments()) {
             result.addChild(argument.build());

src/main/java/net/minecraft/commands/builder/RequiredArgumentBuilder.java

@@ -30,7 +30,7 @@ public class RequiredArgumentBuilder<T> extends ArgumentBuilder<RequiredArgument
     }
 
     public ArgumentCommandNode<T> build() {
-        ArgumentCommandNode<T> result = new ArgumentCommandNode<T>(getName(), getType(), getExecutor());
+        ArgumentCommandNode<T> result = new ArgumentCommandNode<T>(getName(), getType(), getCommand());
 
         for (ArgumentBuilder argument : getArguments()) {
             result.addChild(argument.build());

src/main/java/net/minecraft/commands/tree/ArgumentCommandNode.java

@@ -1,5 +1,6 @@
 package net.minecraft.commands.tree;
 
+import net.minecraft.commands.Command;
 import net.minecraft.commands.arguments.CommandArgumentType;
 import net.minecraft.commands.context.ParsedArgument;
 import net.minecraft.commands.exceptions.ArgumentValidationException;
@@ -9,8 +10,8 @@ public class ArgumentCommandNode<T> extends CommandNode {
     private final String name;
     private final CommandArgumentType<T> type;
 
-    public ArgumentCommandNode(String name, CommandArgumentType<T> type, Runnable executor) {
-        super(executor);
+    public ArgumentCommandNode(String name, CommandArgumentType<T> type, Command command) {
+        super(command);
         this.name = name;
         this.type = type;
     }

src/main/java/net/minecraft/commands/tree/CommandNode.java

@@ -1,21 +1,22 @@
 package net.minecraft.commands.tree;
 
 import com.google.common.collect.Lists;
+import net.minecraft.commands.Command;
 import net.minecraft.commands.exceptions.ArgumentValidationException;
 import net.minecraft.commands.exceptions.IllegalArgumentSyntaxException;
 
 import java.util.List;
 
 public abstract class CommandNode {
-    private final Runnable executor;
+    private final Command command;
     private final List<CommandNode> children = Lists.newArrayList();
 
-    protected CommandNode(Runnable executor) {
-        this.executor = executor;
+    protected CommandNode(Command command) {
+        this.command = command;
     }
 
-    public Runnable getExecutor() {
-        return executor;
+    public Command getCommand() {
+        return command;
     }
 
     public List<CommandNode> getChildren() {

src/main/java/net/minecraft/commands/tree/LiteralCommandNode.java

@@ -1,13 +1,14 @@
 package net.minecraft.commands.tree;
 
+import net.minecraft.commands.Command;
 import net.minecraft.commands.exceptions.ArgumentValidationException;
 import net.minecraft.commands.exceptions.IllegalArgumentSyntaxException;
 
 public class LiteralCommandNode extends CommandNode {
     private final String literal;
 
-    public LiteralCommandNode(String literal, Runnable executor) {
-        super(executor);
+    public LiteralCommandNode(String literal, Command command) {
+        super(command);
         this.literal = literal;
     }