lib/tty.rb in tty-0.0.5 vs lib/tty.rb in tty-0.0.6

@@ -7,16 +7,22 @@
 require 'tty/support/conversion'
 require 'tty/support/coercion'
 require 'tty/support/equatable'
 require 'tty/support/unicode'
 
-require 'tty/color'
 require 'tty/terminal'
+require 'tty/terminal/color'
 require 'tty/system'
 require 'tty/table'
 require 'tty/vector'
+require 'tty/shell'
 
+require 'tty/shell/question'
+require 'tty/shell/question/validation'
+require 'tty/shell/question/modifier'
+require 'tty/shell/statement'
+
 require 'tty/table/border'
 require 'tty/table/border/unicode'
 require 'tty/table/border/ascii'
 require 'tty/table/border/null'
 
@@ -29,9 +35,21 @@
 
 module TTY
 
   # Raised when the argument type is different from expected
   class TypeError < ArgumentError; end
+
+  # Raised when the required argument is not supplied
+  class ArgumentRequired < ArgumentError; end
+
+  # Raised when the argument validation fails
+  class ArgumentValidation < ArgumentError; end
+
+  # Raised when the argument is not expected
+  class InvalidArgument < ArgumentError; end
+
+  # Raised when the passed in validation argument is of wrong type
+  class ValidationCoercion < TypeError; end
 
   class << self
 
     # Return terminal instance
     #