Function Build

module.go:38–57

Build builds the host module p in the wazero runtime r, returning the instance of HostModuleBuilder that was created. This is a low level function which is only exposed for certain advanced use cases where a program might not be able to leverage Compile/Instantiate, most application should not need

(runtime wazero.Runtime, mod HostModule[T])

// not be able to leverage Compile/Instantiate, most application should not need
// to use this function.
func Build[T Module](runtime wazero.Runtime, mod HostModule[T]) wazero.HostModuleBuilder {
	moduleName := mod.Name()
	builder := runtime.NewHostModuleBuilder(moduleName)

	for export, fn := range mod.Functions() {
		if fn.Name == "" {
			fn.Name = export
		}

		paramTypes := appendValueTypes(make([]api.ValueType, 0, fn.NumParams()), fn.Params)
		resultTypes := appendValueTypes(make([]api.ValueType, 0, fn.NumResults()), fn.Results)

		builder.NewFunctionBuilder().
			WithGoModuleFunction(bind(fn.Func), paramTypes, resultTypes).
			WithName(fn.Name).
			Export(export)
	}

	return builder
}

func appendValueTypes(buffer []api.ValueType, values []Value) []api.ValueType {
	for _, v := range values {