first commit

src/main/java/de/kencommand/api/processing/CommandContext.java

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+package de.kencommand.api.processing;
+
+import de.kencommand.api.parsing.ParsedArgument;
+import de.kentoj.scrow.bukkit.command.exception.CommandInvocationException;
+import de.kentoj.scrow.bukkit.command.literal.CommandArgument;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.Player;
+
+public interface CommandContext<T> {
+
+    T getSender();
+
+    /**
+     * @return Object that is parsed from the raw argument
+     * @throws CommandInvocationException if no value given and no default value supplied
+     */
+    <T> ParsedArgument<T> getArgData(String name);
+
+    @SuppressWarnings("unchecked")
+    default <T> T getArgData(CommandArgument<T> arg) {
+        return (T) getArgData(arg.getName());
+    }
+
+    @SuppressWarnings("unchecked")
+    default <T> T getArg(String name) {
+        return (T) getArgData(name).getValue();
+    }
+
+    @SuppressWarnings("unchecked")
+    default <T> T getArg(CommandArgument<T> arg) {
+        return (T) getArgData(arg.getName()).getValue();
+    }
+}