Function makeStubFunction

provisioner/terraform/tfparse/funcs.go:154–162

makeStubFunction returns a function.Function with the required return type and parameters that will always return an unknown type and an error.

(name string, returnType cty.Type, params ...function.Parameter)

// makeStubFunction returns a function.Function with the required return type and parameters
// that will always return an unknown type and an error.
func makeStubFunction(name string, returnType cty.Type, params ...function.Parameter) function.Function {
	var spec function.Spec
	spec.Params = params
	spec.Type = function.StaticReturnType(returnType)
	spec.Impl = func(_ []cty.Value, _ cty.Type) (cty.Value, error) {
		return cty.UnknownVal(returnType), xerrors.Errorf("function %q may not be used here", name)
	}
	return function.New(&spec)
}