Feat: Support Wasm-C-API proposal

[q82419]

Motivation

The wasm-c-api proposal provides the C and C++ API for WASM runtimes. Even though WasmEdge already provided the C API, it's proper to implement the wasm-c-API proposal for the general C/C++ API.
In the current status, we've already implemented the non-runtime data structures on the branch. Then, we need to finish the runtime implementation.

Specification

1. Follow the Spec of WASM-C-API proposal and work on the branch.
2. Implement the WASM C/C++ API by calling the WasmEdge classes or WasmEdge C API.
3. Add the customized wasm_config_t functions for the runtime configurations.
4. Complete the Wasm C/C++ API unit tests for the coverage.
5. Pass the WASM core tests without the SIMD proposal.

Appendix

1. WASM C API proposal: https://github.com/WebAssembly/wasm-c-api
2. WASM spec core tests: https://github.com/WebAssembly/spec/tree/master/test/core

[skant7]

Hi @hydai , the project seems interesting and I would like to work on it . As of now I have done local setup and run the tests ,any suggestions on how do I get started with the project and related resources to get started?
Also please do let me know the prerequisites.

[hydai]

Hi @skant7

Wasm C/C++ API provides an easy way to embedded the Wasm engine in other applications. Because this API is to interact with the Wasm runtime not the Wasm application, you will need to know the execution flow of Wasm files.
WasmEdge provides its own C API, which is not the same as Wasm C API. If you want to start, you can find some previous works in this branch.

And this mission will need the following skills:

• Strong understanding of C and C++. WasmEdge is written in C++. And the headers of this proposal is defined in both C and C++.
• Basic knowledge of WebAssembly

[anonymousr007]

Hi @hydai ,I am final year computer engineering student at Delhi Technological University at India and I would like to work on this project.I am intermediate C++ developer with good knowledge of Data Structures and Algorithms.

Thanks & Regards
Rishabh

[sarath-01]

Hi @hydai this project seems interesting and I am looking forward to contribute to it. I am pretty much comfortable with C and C++, please let me know about how to get start with the project.

[komalbehera]

Hi @hydai
I am a final year undergraduate student from NIT Rourkela with strong hold in C/C++. I am quite proficient in Data structures and algorithms and interested to work on this project. It would be great if you could help me get started with this.

[SAtacker]

@hydai Is it still going on?
Where do I have to send a detailed timeline after completion of #365?

[hydai]

@q82419
Do we have any intention of supporting this proposal? It seems like the upstream is no longer in active development and lack of maintenance.

[q82419]

The wasm c api proposal only supports finished proposals except SIMD.
I can keep updating to the latest upstream but I think it's in a low priority.