About this project

This is a simple terminal based calculator written in Haxe. Parsing is done by tokenising the input and building an AST (abstract syntax tree: https://en.wikipedia.org/wiki/Abstract_syntax_tree) from those tokens. The goal of this project was to better understand parsing and building ASTs for my upcoming projects.

Prerequisites

1. Install Haxe binaries: https://haxe.org/download/
2. Clone this repo

Usage

Simply run this command in the project folder:

haxe --main Repl --interp

You will be greeted with this prompt:

calc>

Type in any arithmetic expression using integers, +, -, *, / operators and parenthesis. If the expression is valid you will get an answer:

calc> 7 + 9 * (8 / 2)
calc> 43

To quit the program either type in exit or press Ctrl+C

Current limitations

• supports only these operators: + - * /
• work only with integer numbers
• overflows at the signed 32-bit integer values (2147483647 and -2147483648)

calc> 2147483647 + 1
calc> -2147483648

• division by zero results in negative signed 32 integer bound (-2147483648)