op-parser 0.1.1

Executable Shlaer-Mellor External Entity Operation Parser

Executable UML External Entity Operation Parser

Parses an *.op file (operation) to yield an abstract syntax tree using python named tuples

Why you need this

You need to process an *.op file in preparation for populating a database or some other purpose

Installation

Create or use a python 3.11+ environment. Then

% pip install op-parser

At this point you can invoke the parser via the command line or from your python script.

From your python script

You need this import statement at a minimum:

from op-parser.parser import OpParser

You then specify a path as shown:

result = OpParser.parse_file(file_input=path_to_file, debug=False)

The result will be a list of parsed operation statements. You may find the header of the visitor.py file helpful in interpreting these results.

From the command line

This is not the intended usage scenario, but may be helpful for testing or exploration. Since the parser may generate some diagnostic info you may want to create a fresh working directory and cd into it first. From there...

% eeop arrived-at-floor.op

The .op extension is not necessary, but the file must contain operation text. See this repository's wiki for more about the xsm language. The grammar is defined in the operation.peg file. (if the link breaks after I do some update to the code, just browse through the code looking for the operation.peg file, and let me know so I can fix it)

You can also specify a debug option like this:

% eeop arrived-at-floor.op -D

This will create a diagnostics folder in your current working directory and deposit a couple of PDFs defining the parse of both the state model grammar: operation_tree.pdf and your supplied text: operation.pdf.

You should also see a file named op-parser.log in a diagnostics directory within your working directory