Is there any good example of a "self contained" "toy language" -> wasm compiler written in Rust ? I'm mainly looking for a starting point to play with.
By "toy language", I mean something atleast as high level as C (i.e. not assembly).
by "self contained", I mean: does not rely on LLVM or Cranelift for optimization passes.
I don't know of any such thing. As a staring point you could read "Let's Build a Compiler, by Jack Crenshaw": Let's Build a Compiler and devise your own simple compiler that generates WASM.
I don't know what level of sophistication you are starting from. Crenshaw's exposition is very basic but at lest detailed and complete enough to make something actually work.
Suited me just fine a few years back when I work through it and ended up generating code for x86 and the Parallax Inc. Propeller micro-controller.
If nothing it's a nice discussion of language design choices.
This is valid, but not what I'm looking for. I've taken compiler courses before in College going through the parsing, (minimal) type checking, Static single-assignment form - Wikipedia , simple optimization (evaluate constants), and emitting some basic assembly code ( MIPS architecture - Wikipedia ? I forgot).
The main thing I'm looking for is not compiler theory, but a minimalist end to end working system, so instead of figuring out how to do foo with library bar, there's already existing code doing that work. In particular, I suspect there is a lot of 'boiler plate' code involved for any self contained "toy language -> wasm" compiler.
Something like Tiny C Compiler - Wikipedia , but written in Rust, and outuptting wasm, would be ideal.
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