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Do not parse an empty string as an IpAddress.

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This is more likely to result in downstream confusion than not.
Let downstream code decide exactly what it wants to do with
an empty string; be conservative here.
This commit is contained in:
whitequark 2017-10-30 07:20:23 +00:00
parent 7a2271dfd6
commit 1e105253f9
1 changed files with 2 additions and 6 deletions
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8
src/parsers.rs
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@ -127,9 +127,6 @@ impl<'a> Parser<'a> {
}
fn accept_ip(&mut self) -> Result<IpAddress> {
if let Some(()) = self.try(|p| p.accept_eof()) {
return Ok(IpAddress::Unspecified)
}
if let Some(ipv4) = self.try(|p| p.accept_ipv4()) {
return Ok(IpAddress::Ipv4(ipv4))
}
@ -158,7 +155,7 @@ impl FromStr for Ipv4Address {
impl FromStr for IpAddress {
type Err = ();
/// Parse a string representation of an IPv4 address.
/// Parse a string representation of an IP address.
fn from_str(s: &str) -> Result<IpAddress> {
Parser::new(s).until_eof(|p| p.accept_ip())
}
@ -229,8 +226,7 @@ mod test {
#[test]
fn test_ip() {
assert_eq!(IpAddress::from_str(""),
Ok(IpAddress::Unspecified));
assert_eq!(IpAddress::from_str(""), Err(()));
assert_eq!(IpAddress::from_str("1.2.3.4"),
Ok(IpAddress::Ipv4(Ipv4Address([1, 2, 3, 4]))));
assert_eq!(IpAddress::from_str("x"), Err(()));