func errorExpectingOneOf(tok parser.State16, src *string, expected []parser.Rule) error {
expected_str := make([]string, 0, len(expected))
for i, expect := range expected {
expected_str[i] = parser.Rul3s[expect]
}
return newError(
"Unexpected ",
parser.Rul3s[tok.Rule],
" at line ",
line_no(src, tok.Begin()),
". Expected one of (",
strings.Join(expected_str, ","),
").",
)
}
