flex VS awesome-c

I am using Flex++, which is Flex for C++ and I am having trouble setting the input file. Flex++ uses the FlexLexer class provided in FlexLexer.h to create the lexer object(https://github.com/westes/flex/blob/master/src/FlexLexer.h). In my main function I have

Further applications of DFA and NFA: lex or flex, yacc or bison, and POE :-)

How about writing a programming language using Flex and Bison? There are lots of good tutorials and examples out there.

Some lexer generators (notably Flex) take input from a file handle by default. While you can always read a file into a string before passing it to the generated lexer, this is not seen as "the best" since you have to read in all the data into memory, which can be a lot.

Ages ago, I loved writing domain-specific toy languages, and almost always used flex to generate lexers and GNU bison to generate the parser. I've begun a new toy project and I don't think those two will cut it this time, so I'm looking for other tools that integrate well with C++.

I don't understand :c don't lexers like Flex work off of regex rules? Isn't this the correct first step to parse it?

I wrote a C compiler using flex [1] and bison [2]. The glue between them is a bit hacky.

At some point ANTLR [3] looked promising, but these days I'd probably write a lexer and recursive descent parser by hand, then generate LLVM IR.

[1] https://github.com/westes/flex

github.com/westes/flex/releases

Un commento in flex, uno storico software, tanto per mostrare che anche i migliori fanno le cose alla buona.

https://github.com/oz123/awesome-c#learning-reference-and-tu...

So, let’s go through an example. Since you’re used to using C, I’d suggest looking through the awesome-C repo. From there, you might decide you’re interested in graphics, so you check out OpenGL.

Awesome C - oz123

You can find a lot of resources at oz123 / awesome-c and this [https://www.linuxquestions.org/questions/programming-9/c-c-tutorials-825748/](C/C++ Tutorials thread).

For example, you can use the C language with sds strings (see https://github.com/antirez/sds) if you want to have an easier time with string formatting and don't want to worry about using the famously unsafe string.h functions correctly. You'll still program in ISO C, but just not in the standard library. The same applies to pretty much all parts of the standard library, the only part unsurpassed is pretty much just printf and the math headers (math.h, fenv.h, tgmath.h, complex.h) imo, and the occasional call to exit. A good place to look for libraries if you want to go that route is the awesome-c collection: https://github.com/oz123/awesome-c

There's an awesome C list of libraries and frameworks [1]. Pick one that suits your needs.

Time and again folks say such and such isn't suitable tool to do something. While some of those admonitions are true, if you're doing something to learn, feel free to ignore those and enjoy your learning. There're folks who learn assembly even today and learn a great deal of other things than assembly and have fun too.

As for C, it'd recommend most folks know the basics since many "modern" languages totally don't teach you those, and in fact hide the details from you that things feel like magic to you eventually if you keep using these high-level languages. This is okay as long as you can know the basics and map them back when needed.

[1]: https://github.com/oz123/awesome-c