MyOPL

MyOPL is a simple interpreted programming language implemented in Python.
It supports variables, functions, control flow, and modern data structures such as lists, dictionaries, sets, and tuples.

Features

• Variables and expressions
• Control flow: if, for, while
• Functions: user-defined and built-in
• Data structures: List, Dict, Set, Tuple
• Built-in functions for data manipulation (e.g., APPEND, LEN, DICT_KEYS, SET_ADD, etc.)

Example

# List
mylist = [1, 2, 3]
APPEND(mylist, 4)
PRINT(mylist)  # [1, 2, 3, 4]

# Set
s = {1, 2, 3}
SET_ADD(s, 4)
SET_REMOVE(s, 2)
PRINT(s)  # {1, 3, 4}

# Dict
d = {"a": 1, "b": 2}
PRINT(DICT_KEYS(d))    # ["a", "b"]
PRINT(DICT_VALUES(d))  # [1, 2]

# Tuple
t = (10, 20, 30)
PRINT(TUPLE_GET(t, 1)) # 20

Getting Started

1. Clone the repository:

   git clone https://github.com/ayush2005soumya/MyOPL-python.git
   cd MyOPL-python

2. Run a program:

   python basic.py yourscript.opl

3. Try the REPL:

   python basic.py

Project Structure

• basic.py — The interpreter and language implementation
• grammar.txt — Language grammar rules
• strings_with_arrows.py — Utility for error reporting

Built-in Functions

• PRINT(value)
• APPEND(list, value)
• POP(list, index)
• EXTEND(listA, listB)
• LEN(list)
• DICT_KEYS(dict)
• DICT_VALUES(dict)
• DICT_ITEMS(dict)
• SET_ADD(set, value)
• SET_REMOVE(set, value)
• TUPLE_GET(tuple, index)
• ...and more!

Contributing

See CONTRIBUTING.md for guidelines.

License

MIT License