Execute Brain****/Ada: Difference between revisions

{{implementation|Brainf***}}{{collection|RCBF}}

This is a simple implementation of [[Brainf***]] (it will be called just BF in what follows). It is written in [[Ada]].

This implementation imposes hard limits in the size of both the memory and the program size. The whole program is read first, and then interpreted. The program must be stored in a file. The filename is given as the only argument to the interpreter.

More detailed information about the code can be found in the comments throughout it.<br clear=all>

-- Usage: bf programfile[.bf]

New_Line;

This implementation provides a procedure that can be called to interpret a [[Brainf***]] stored in a string. The memory is passed as a parameter. Input and output of the memory cells is stream. By default the input and output streams are used. The interpreter uses the native machine memory. Upon errors such as addressing errors and program errors (unclosed brackets) Constraint_Error is propagated.

with Ada.Streams; use Ada.Streams;

with Ada.Text_IO.Text_Streams; use Ada.Text_IO.Text_Streams;

end loop;

end BF;

with System.Storage_Elements; use System.Storage_Elements;

with BF;

BF ("++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.", Memory);

end Test_BF_Hello;

Sample output:

<pre>

Hello World!

</pre>

with System.Storage_Elements; use System.Storage_Elements;

with BF;

BF (">>++++[<++++[<++++>-]>-]<<.[-]++++++++++.", Memory);

end Test_BF;

Sample output:

<pre>