How to make a programming language

georgesbricks

Hi everyone,

Does anyone here know how I could create a programming language with HTML5 and JavaScript?

Just a link to a tutorial would be really great!

Thankyou in advance

georgesbricks / http://bricks.georgesknowledge.com/

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YUM_YUM_YUM

To create a programming language you need a parser and a lexer.

For example if you have a language were you can do “if”, “else” and “end if” the lexer would identify the three statements as objects then the parser would put the three objects together to form an “if” statement.

Hope this helped!

https://en.wikipedia.org/wiki/Parsing
https://www.codeproject.com/Articles/50377/Create-Your-Own-Programming-Language

YUM_YUM_YUM

These are rely great tutorials: https://www.youtube.com/watch?v=LDDRn2f9fUk

georgesbricks

Awesome!!! I'll check them out!!!!!!!!!!!!!!!!!!

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-Lite-

I'd recommend ANTLR. I built a few programming languages in it (Mainly in Java, but ANTLR supports JavaScript too).
Another excellent tool is Lex/Yacc, but that's probably not what you are looking for.
It's a parser-generator, meaning that it does all of the heavy lifting for you.
Example

if_stmt
: IF_KWD expression block (ELSE IF block)* (ELSE block)?
;

YUM_YUM_YUM wrote:
To create a programming language you need a parser and a lexer.

For example if you have a language were you can do “if”, “else” and “end if” the lexer would identify the three statements as objects then the parser would put the three objects together to form an “if” statement.

Hope this helped!

https://en.wikipedia.org/wiki/Parsing
https://www.codeproject.com/Articles/50377/Create-Your-Own-Programming-Language

It's incredibly more complex. You need to first tokenize, then you can lex, then you parse, then you create an Abstract Syntax Tree, then you walk the AST.
(this example is still oversimplified)

An example of

“There are two different types of people in the world: those who want to know, and those who want to believe.”
Friedrich Nietzsche

georgesbricks

Thankyou, i'll try it!

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georgesbricks

I've installed the python 3 version of ANTLR, but I can't find it on my computer

. where can it be found?

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georgesbricks

Wait, Is ANTLR just a library that i can use with the normal python shell? I'm not really that skilled with JavaScript but I am very confident about using python.

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-Lite-

georgesbricks wrote:
Wait, Is ANTLR just a library that i can use with the normal python shell? I'm not really that skilled with JavaScript but I am very confident about using python.

https://github.com/jszheng/py3antlr4book/blob/master/

“There are two different types of people in the world: those who want to know, and those who want to believe.”
Friedrich Nietzsche

georgesbricks

There seem to be loads of links to download it. which one

?

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-Lite-

georgesbricks wrote:
There seem to be loads of links to download it. which one?

The official website.
http://www.antlr.org/
(Make sure it is version 4.0 +)

And make sure you have the runtime installed for python
Open up a command line and type

pip install antlr4-python3-runtime

Last edited by -Lite- (June 28, 2017 18:41:36)

“There are two different types of people in the world: those who want to know, and those who want to believe.”
Friedrich Nietzsche

georgesbricks

Is there a way to make it browser based, with HTML5 and JavaScript?

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-stache-

If you want to use JS, nearley is pretty cool.

3x3 pb: 13.240
3x3 avg: ~21-26

-Lite-

georgesbricks wrote:
Is there a way to make it browser based, with HTML5 and JavaScript?

Yes. Simply use the flag

-Dlanguage=JavaScript

when compiling your parser

(that's for being client sided)
If you want it to be server-sided, then any compilation target will work (Java, C++, Python, etc.)

Last edited by -Lite- (June 29, 2017 01:18:18)

“There are two different types of people in the world: those who want to know, and those who want to believe.”
Friedrich Nietzsche

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