:title: mal step 1
:date: 2026-09-03
:tags: mal, python
:identifier: 20260903T200146
:signature: 10=2

mal: Step 1
-----------

:project: mal-py
:filename: step1_read_print.py

Not much to see here for this stage, most of the work happened in :denote:link:`20260904T122549`

**read**

.. code-block:: python

   from reader import read_str

   def read(ins):
       return read_str(ins)

**eval**

.. code-block:: python

   def evaluate(form):
       return form


**print**

.. code-block:: python

   from printer import print_form

   def printit(form):
       return print_form(form)

**rep**

.. code-block:: python

   def rep(ins: str):
       try:
           return printit(evaluate(read(ins)))
       except EOFError:
           return f"EOF"


**repl**

.. code-block:: python

   def repl(ins: io.TextIO):
       print("user> ", end='', flush=True)
       while (line := ins.readline()) != "":
           print(rep(line))
           print("user> ", end='', flush=True)


   if __name__ == "__main__":
       import sys
       repl(sys.stdin)