jevkalk VS nederlang

[1] Here's one of my tries: https://github.com/jevko/jevkalk

Here is a toy language that uses Jevko as syntax that I've been hacking on a bit recently: https://github.com/jevko/jevkalk

> is doing? It sure looks to me like it's asking whether a symbol (i.e. indivisible atom) ends with an equal sign, which is semantic gibberish.

There are no symbols or indivisible atoms here.

What's happening here is parsing. `jevkoToHtml` is a kind of parser-transpiler which operates on a syntax tree, rather than a sequence of characters or tokens.

The syntax tree is the output of an earlier stage of parsing, done by the Jevko parser.

So you can think of this as multi-pass parsing, by analogy with multi-pass compilation.

At the same time as this second pass of parsing is happening, translation to HTML is happening as well.

Hope this clarifies things!

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[0] To clearly see the point, here is a toy programming language which uses Jevko as its syntax: https://github.com/jevko/jevkalk

Writing a blog post on my experience rewriting a toy interpreter in Rust and what it took to make it faster than the one I wrote in C.

Closures will probably remain hairy though. It’s a tough problem to solve. I’ve yet to take the plunge (supporting closures, that is) for my toy language Nederlang but maybe the other parts of it can be of help. It’s no longer a tree-walking implementation though.

The way I solved this in Nederlang is to create a hole in the stack for the maximum amount of local variables the compiler encountered for each block statement.

Have been working on Nederlang for the last few weeks again. My last (and first!) attempt at an interpreted programming language was in C but it wasn't that pleasant to work in. I'm now using Rust and am pretty happy with it so far. Performance is great (using tagged pointers and some nice optimizations using specialized opcodes for common operations, like operating on a constant and a variable, bypassing the stack), it's a joy to work in and exotic segfaults are a thing of the past.