.. _basicTypesDoc:

.. index:: single: Basic Types

===========
Basic Types
===========

Stide has three basic types:

* Integer_
* Real_
* String_

Basics types are implicitly declared. 

----

.. index:: single: Basic Types; integer
.. index:: single: integer
.. _Integer:

Integer
=======

A number without a fractional component is treated as an integer. An integer is a :ref:`constant block <constantDoc>` without an identifier and an integer value assigned to it. It has a `constant integer` output port.

::

	# Integer representation 
	constant INTEGER {
		value:	INTEGER
		meta:	none
	}

:INTEGER: ``-?[0-9]+``

:Example: ``0``, ``1024``, ``-32768``

----

.. index:: single: Basic Types; real
.. index:: single: real
.. _Real:

Real
====

A number with a fractional component is treated as a real. A real is a :ref:`constant block <constantDoc>` without an identifier and a real value assigned to it. It has a `constant real` output port.  

::

	## Real representation
	constant REAL {
		value:	REAL
		meta:	none
	}

:REAL: ``-?({ [0-9]+.[0-9]*} | {[0-9]*.[0-9]+ })``

:Example: ``.1, 1.1, 1., -.1, -1.1, -1.``

----

.. index:: single: Basic Types; string
.. index:: single: string
.. _String:

String
======

A sequence of characters enclosed in single or double quotation marks is treated as a string. A string is a :ref:`constant block <constantDoc>` without a identifier and has a string value assigned to it. It has a `constant string` output port. 

::

	# String representation
	constant STRING {
		value:	STRING
		meta:	none
	}

:STRING: :code:`{\'.+\'} | {\".+\"}`

:Example: ``'A sting.', "A string."``