aetg

README

aetg

Inspired by this video.

aetg is essentially just a simple calculator with an annoying syntax.

This is mainly just a small project I made to get experience with making trees (and parsing) in Go.

Usage

aetg parses arithmetic expressions into a tree of sub expressions that it then evaluates.

Since I am new to writing lexers/parsers, aetg uses a very strict format to notate expressions that is easy to tokenize.

Run the compiled aetg binary to enter a shell in which you can type expressions.

Notation is as follows:

(<sub expr> operator <sub expr>)

Examples:

(5 * (3 - 6))

(((8.11 + -7) ^ 3) - ((2 | 4) * (5.23 / (5 % 2))))

The following operators are supported:

• + Addition
• - Subtraction
• * Multiplication
• / Division
• ^ Exponentiation
• % Modulus
• | Radical ((2 | number) for square root, etc.)

Flags

• --version Display version information
• --verbose Print expressions after parsing
• --file <filepath> Read and run an expression from a file
• --expr <expression> Run a specific expression without going into the shell

Installation

It's just a single binary.

You can compile with go build.

A Linux binary is provided.

License

All files are licensed under the MIT License