https://github.com/DulLabs/bhai-lang
A toy programming language written in Typescript
https://github.com/DulLabs/bhai-lang
interpreter javascript parser programming-language typescript
Last synced: 5 months ago
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A toy programming language written in Typescript
- Host: GitHub
- URL: https://github.com/DulLabs/bhai-lang
- Owner: DulLabs
- License: mit
- Created: 2021-12-31T12:41:46.000Z (almost 4 years ago)
- Default Branch: develop
- Last Pushed: 2024-06-15T09:54:53.000Z (over 1 year ago)
- Last Synced: 2024-10-29T15:33:05.803Z (about 1 year ago)
- Topics: interpreter, javascript, parser, programming-language, typescript
- Language: TypeScript
- Homepage: https://bhailang.js.org/
- Size: 1.84 MB
- Stars: 3,999
- Watchers: 41
- Forks: 498
- Open Issues: 64
-
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
Awesome Lists containing this project
README
Bhai Lang
This is official repository for bhai-lang.
Bhai lang is a toy programming language written in Typescript.
Installation
```
npm i -g bhailang
```
Usage
Create a new file (test.bhai)
Edit the file with a text editor.
You can also try out your code on Bhai Lang PlayGround
```
hi bhai
bol bhai "Hello bhai";
bye bhai
```
Run
```
bhailang test.bhai
```
Output
```
hello bhai
```
Documentation
General
hi bhai is the entrypoint for the program and all program must end with bye bhai. Anything outside of it will be ignored.
```
This will be ignored
hi bhai
// Write code here
bye bhai
This too
```
Variables
Variables can be declared using bhai ye hai.
```
hi bhai
bhai ye hai a = 10;
bhai ye hai b = "two";
bhai ye hai c = 15;
a = a + 1;
b = 21;
c *= 2;
bye bhai
```
Types
Numbers and strings are like other languages. Null values can be denoted using nalla. sahi and galat are the boolean values.
```
hi bhai
bhai ye hai a = 10;
bhai ye hai b = 10 + (15*20);
bhai ye hai c = "two";
bhai ye hai d = 'ok';
bhai ye hai e = nalla;
bhai ye hai f = sahi;
bhai ye hai g = galat;
bye bhai
```
Built-ins
Use bol bhai to print anything to console.
```
hi bhai
bol bhai "Hello World";
bhai ye hai a = 10;
{
bhai ye hai b = 20;
bol bhai a + b;
}
bol bhai 5, 'ok', nalla , sahi , galat;
bye bhai
```
Conditionals
Bhailang supports if-else-if ladder construct , agar bhai block will execute if condition is sahi, otherwise one of the subsequently added nahi to bhai blocks will execute if their respective condition is sahi, and the warna bhai block will eventually execute if all of the above conditions are galat
```
hi bhai
bhai ye hai a = 10;
agar bhai (a < 20) {
bol bhai "a is less than 20";
} nahi to bhai ( a < 25 ) {
bol bhai "a is less than 25";
} warna bhai {
bol bhai "a is greater than or equal to 25";
}
bye bhai
```
Loops
Statements inside jab tak bhai blocks are executed as long as a specified condition evaluates to sahi. If the condition becomes galat, statement within the loop stops executing and control passes to the statement following the loop. Use bas kar bhai to break the loop and agla dekh bhai to continue within loop.
```
hi bhai
bhai ye hai a = 0;
jab tak bhai (a < 10) {
a += 1;
agar bhai (a == 5) {
bol bhai "andar se bol bhai ", a;
agla dekh bhai;
}
agar bhai (a == 6) {
bas kar bhai;
}
bol bhai a;
}
bol bhai "done";
bye bhai
```
Development
You can explore abstract syntax tree(AST) of bhailang here.