Charr Lang

version: 0.0.2

(Early development)

Running the language:

You can give the CharrLang shell a test run for the syntax basics by visting this link: https://replit.com/@charlotte-2222/charr-lang?v=1

If you wish to run the language on your own machine, you are welcome to clone/or fork the repository. At the moment Charr is not ready for extended use, but it is capable of running .charr files to some extent.

Updates:

The current version of CharrLang now supports compilation of .charr files, as well as running syntax in the shell. On a previous version, I broke the shell; and that version remained stable on replit.

I wouldn’t say I’m quite done yet, I’d like to keep working on both the shell, compiler, and further development of the language.

Eventually I’ll upload to pypi.

General Syntax:

Writing Hello World is fairly easy. out="Hello, World!
One could also write:

img.png

Data Types

List/Arrays

List/Array(s) contains of elements of the same type (either int, float, string, bool).

They can be created using the following syntax:

var = [1, 2, 3, 4, 5]

Variables

These objects are used to store data.

Creating a variable

Charr does not declare explicit variables, variables are created when they are assigned to.

var = 1
foo = "bar"

Case Sensitivity

Charr variables are case sensitive.

img_1.png

Comments

Charr supports comments, which are lines starting with a // character.

// This is a comment

Operations, Logic Operators, and Assignment Operators

Arithmetic Operators

Charr supports the following arithmetic operators:

Operator Name Example
+ Addition 1 + 1
- Subtraction 1 - 1
* Multiplication 1 * 1
/ Division 1 / 1
% Modulus 1 % 1
^ Exponent x^y
inc Increment inc val
dec Decrement dec val

Logical Operators

Charr supports the following logical operators:

Operator Name Example
== Equality 1 == 1
!= Inequality 1 != 1
< Less than 1 < 2
> Greater than 1 > 2
<= Less than or equal to 1 <= 2
>= Greater than or equal to 1 >= 2

Assignment Operators

The assignment operator = is used to assign a value to a variable.

If Statements

Charr supports if statements.

if (condition) {
    // code to execute if condition is true
}
else{
    // code to execute if condition is false
}

Example:

 if counter % 5 == 0
            { output "Buzz" }
        else
            { output counter }

While Do Loops

With the while loop, we can execute a block of code as long as a condition is true.

while condition 
do{
    // code to execute
}

Example

precision = 100000
total = 0
counter = 0

while counter < precision
do {
    odd = (2 * counter + 1)
    if (counter % 2 == 0)
        { total = total + 1/odd }
    else
        { total = total - 1/odd }
    inc counter
}

pi = 4 * total
output pi

That’s all for the time being.

Author: Charlotte Childers
Date of documentation: August 3rd, 2022

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Contacts:

Feel free to contact me regarding this language or any other questions, comments, or concerns. Email would be the best way to get a response.