github.com/tetratelabs/wazero@v1.7.3-0.20240513003603-48f702e154b5/internal/testing/binaryencoding/function.go (about)

     1  package binaryencoding
     2  
     3  import (
     4  	"github.com/tetratelabs/wazero/internal/wasm"
     5  )
     6  
     7  // EncodeFunctionType returns the wasm.FunctionType encoded in WebAssembly 1.0 (20191205) Binary Format.
     8  //
     9  // Note: Function types are encoded by the byte 0x60 followed by the respective vectors of parameter and result types.
    10  // See https://www.w3.org/TR/2019/REC-wasm-core-1-20191205/#function-types%E2%91%A4
    11  func EncodeFunctionType(t *wasm.FunctionType) []byte {
    12  	// Only reached when "multi-value" is enabled because WebAssembly 1.0 (20191205) supports at most 1 result.
    13  	data := append([]byte{0x60}, EncodeValTypes(t.Params)...)
    14  	return append(data, EncodeValTypes(t.Results)...)
    15  }