This tool was replaced by wasm-chisel.
This tool transform WebAssembly S-expressions (WAST) code to an output conforming to the eWASM Contract Interface.
It is especially useful for using together clang to create eWASM contracts, because clang and C has a few limitations regarding WebAssembly currently.
clang will export every global method, which is expected. For some reason making methods static or inline will not produce the proper results.
ewasm-cleanup will remove every export bar main and memory.
Most of the current toolchains (clang for C and mir2wasm for Rust) do not support WebAssembly's two-level imports (namespace and method name). They mostly
hardcode env as the namespace.
ewasm-cleanup will transform these to imports matching the Ethereum Environment Interface.
clang considers memset and memcpy special. It even detects patterns of them and replaces it with the internal memcpy and memset. Unfortunately
it isn't fully supported in the WebAssembly target and it ends up with memset and memcpy being an import.
ewasm-cleanup will insert an implementation of memset and memcpy.
Alex Beregszaszi
MIT