Writing a Basic Interpreter

[ColBoy]

Does anybody have any pointers for writing a Basic interpreter. A) I've always wanted to write one B) I have a specific project in mind. Not sure at this stage whether to do it in Purebasic, as I am much more experience in VB.NET, Delphi and Python, but would love the speed performance I would get writing it in PB. At this point would just like some pointers to some texts that would prove useful, or some other tips. Thanks

[c4s]

Well, Trond wrote a very comprehensive tutorial about it so this site is exactly what you need: pbtut.blogspot.com

Here is the related thread:
http://www.purebasic.fr/english/viewtop ... 27&t=38931

[ColBoy]

I think that's a little lower level than I wanted to go. Is much of this still relevant, even though I want to create an interpreter, rather than a compiler? Want this to be a pure language solution, i.e. no C, or ASM external calls. I don't think speed is going to be much of an issue here, especially in comparison to the speed of the interpreter on the original 4mhz machine.

[c4s]

Oh, sorry I misread it.
But informations about the "understanding of the source code" can still be interesting for you.

[Foz]

I would have a look at Tiny Basic as an example of how to implement it. You will be able to find many ports of the code in virtually whatever language you like.

I have been tempted to implement my own version for built in scripting purposes, but I am no where near needing that (yet).

[X]

DracScript is here on the forums too

On a side note, Trond seemed to have abandoned the scripting project and nobody took it up We need a scripting project from beginning to end, kinda like Trond's but finished. That would be cool.

[utopiomania]

There's an obfuscated source for a Basic Interpreter in a recent anticracking thread here. The hackers here will
help you de-obfuscate it in no time.

[codewalker]

Did the question about writing the next os in purebasic already pass by . . .