Learn Tekst.

Introduction

Tekst is a lightweight interpreted programming language designed around readable syntax and simple programming concepts.

print("Hello, World!")

Installation

The Tekst interpreter is currently built from source using a C++17-compatible compiler.

Requirements

• G++ or another C++17 compiler
• Git
• Windows, Linux, or macOS

Build

g++ -std=c++17 -O2 -o Tekst src/main.cpp src/lexer.cpp src/parser.cpp -I.

Variables

Variables are created by assigning a value to a name. Tekst does not require explicit type declarations for basic values.

name = "Tekst"
age = 14
price = 9.99
active = True

numbers = [1, 2, 3]
config = {"port": 8080}

Functions

Functions are declared with the fn keyword.

fn greet(name):
  print("Hello, " + name)

greet("Tekst")

Default arguments

fn greet(name, greeting = "Hello"):
  print(greeting + ", " + name)

greet("World")
greet("World", "Welcome")

Control flow

Conditions

x = 10

if x > 15:
  print("Large")
elif x > 5:
  print("Medium")
else:
  print("Small")

Loops

count = 0

while count < 5:
  print(count)
  count = count + 1

items = [1, 2, 3, 4]

for item in items:
  print(item)

Classes

Tekst supports classes, constructors, methods, and inheritance.

class Counter:
  def __init__(self, start):
    self.value = start

  def increment():
    self.value = self.value + 1

  def display():
    print(self.value)

Counter counter
counter.increment()
counter.display()

Error handling

Runtime errors can be handled using try and catch blocks.

try:
  x = 1 / 0

catch error:
  print("Something went wrong")

Running Tekst

Once the interpreter has been built, pass a Tekst source file to the executable.

Tekst script.tekst

Debug output can be enabled when supported by the interpreter.

./Tekst --debug script.tekst