Updated to work with more than just Argument and Option input types. Makes use of InputTypeFactory to allow addition of new types as needed. Added InputTypeFactory to help with loading input type classes

src/Input/Interfaces/InputHandlerInterface.php

@@ -12,15 +12,9 @@ interface InputHandlerInterface
 
     public function validate(): void;
 
-    public function getArgument(string $name): ?string;
+    public function find(string $name);
 
-    // note that the return value of getOption() isn't always going to be
-    // a string like getArgument()
-    public function getOption(string $name);
-
-    public function getArguments(): array;
-
-    public function getOptions(): array;
+    public function getInput(): array;
 
     public function getCollection(): ?Input\InputCollection;
 }

src/Input/Interfaces/InputTypeInterface.php

@@ -16,4 +16,5 @@ interface InputTypeInterface
     const FLAG_TYPE_INCREMENTING = 0x0400;
 
     public function getType(): string;
+    public function respondsTo(string $name): bool;
 }