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feat: implement without C dependency #15

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merged 1 commit into from
Oct 6, 2023
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egonelbre
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Go 1.21 introduced go:wasmimport, which means there's no need for using C for imports.

@@ -281,18 +270,18 @@ func (m *Memory) Store(data []byte) {
}

func (m *Memory) Free() {
C.extism_free(m.offset)
extism_free(m.offset)
}

func (m *Memory) Length() uint64 {
return m.length
}

func (m *Memory) Offset() uint64 {
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I also wondered whether this should return ExtismPointer and then FindMemory also use it... to avoid some potential errors. However, that would be a backwards incompatible change.

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We're nearing a 1.0 release, so let's break things if needed in order to improve the code & APIs!

For reference if interested:
extism/extism#420

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@egonelbre egonelbre Oct 6, 2023

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Ah, also -- is it even necessary to expose Offset and FindMemory? If it's not necessary, then the decision can be pushed further down the line until it's necessary.

@wikiwong
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wikiwong commented Oct 6, 2023

@egonelbre this is a great change, thank you! will give it a more thorough pass tomorrow but so far looks good

@nilslice
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nilslice commented Oct 6, 2023

@bhelx & @zshipko,

I don't see anything blocking this - but would be great to have one more of us take a quick look!

@nilslice nilslice requested review from zshipko and bhelx October 6, 2023 19:32
@bhelx
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bhelx commented Oct 6, 2023

Go 1.21 introduced go:wasmimport, which means there's no need for using C for imports.

Perhaps a naive question, I'm less familiar with this repo than @nilslice and @zshipko . Does this work in both Go and tinygo? Also, do we support host functions yet in this repo? Not seeing anything in the docs about it.

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bhelx commented Oct 6, 2023

Overall though, yes I endorse this. Love seeing the advancements in Wasm support in the Go ecosystem and not relying on C stuff. I'm also okay with any breaking changes. We can bump this to a 1.0 pre-release version if we want to break the API

@egonelbre
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@bhelx yes, both tinygo and regular go should work. It probably would make sense to add tests for both compilers, currently it seems only tinygo is tested.

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This looks great! Merging.

@zshipko zshipko merged commit 75096db into extism:main Oct 6, 2023
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@egonelbre egonelbre deleted the noc branch October 9, 2023 15:33
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5 participants