jxlang 0.2.93

A custom programming language jxlang

JxLang 0.2.6 -> 0.2.9

A lightweight custom programming language designed for simplicity and interactive scripting. Built with Python, jxlang provides a REPL environment and supports basic programming constructs, including variables, loops, functions, and library imports.

Installation

Install jxlang via PyPI:

pip install jxlang

Update Content

• Optimized string definition.
• Support adding, deleting and modifying elements in the list.
• Solved some known underlying logic problems.
• Preparing for supporting '.jl' code documents, pre support one-time running of written code.

Features

• Single-Line Comments: # stands for single-line comments.
• Variable Declaration: Use let to declare variables.
• Loops: for loops with range-based iteration.
• I/O Operations: enter() for input, say() for output.
• Library Imports: Import Python libraries via cite.
• List/Table Structures: Create lists (table(...)).
• Exit Session: endend() for exiting current session.
• REPL Support: Interactive shell for quick testing.

Quick Examples

1. Variable Declaration and Printing

let x: 5
say(x + 3)  # Output: 8
# You can use double quotation marks or single quotation marks when assigning strings to variable names
let a: "hello"
say(a)      # hello
let a: 'hello'
say(a)      # hello

2. Loop

(i -> 1 && 5).for(say(i))
# Output: 1 2 3 4 5

3. Function Definition (Not open for users now)

4. Input and Output

let name: enter()  # User enters "Alice"
say("Hello, " + name)  # Output: Hello, Alice

5. Import a Python Library

cite math
say(math.sqrt(25))  # Output: 5.0
cite numpy
let a: numpy.array([1,2,3])
say(a)              # Output: [1,2,3]

* JxLang can calls Python Libraries only if you installed in your python environment.

6. List and Table

let lst: table(1, 2, 3)
say(lst[0])       # Output: 1
say(lst)          # Output: [1,2,3]
let tbl = table(1, 2; 3, 4)
say(tbl)          # Output: [[1, 2], [3, 4]]
push 1 -> lst     # Add 1 to the bottom of the list
say(lst)          # [1,2,3,1]
push tbl -> lst
say(lst)          # [1,2,3,1,[[1,2],[3,4]]]
out 1 -> lst      # Remove 1 from the list but leave it in memory
say(lst)          # [2,3,[[1,2],[3,4]]]
# Outlist can display the deleted list elements
say(lst.outlist)  # [1,1]
throw 2 -> lst    # Deleting 2 from the list cannot be restored
say(lst)          # [3,[[1,2],[3,4]]]
let lst[0]: 2     # Replace the element with index 0 in the list with 2
say(lst)          # [2,[[1,2],[3,4]]]

* JxLang splits into n-plus-1-dimensional lists by n semicolons.

Using the REPL

Start the interactive environment by running:

jxlang

Example REPL session:

jxlang> say(42)
42
jxlang> endend(0)  # you can use numbers from 0 to 9 for endend()
Exiting with code 0

Contributing

Contributions are welcome! Please fork the repository and submit a pull request.
For major changes, open an issue first to discuss your ideas.

License

This project is licensed under the Apache License.

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Happy coding! 🚀