Added val() function to KeyTreeRef.

Dependencies

• [2] YJVNXWNH minor
• [3] K5VHGRGG Add serialization.
• [4] 6ZJX2OQV First commit
• [5] JUK3ONMU Fixed comment parsing bug.
• [6] VDFODD2F Added line to BadIndent error.

Change contents

• edit in src/lib.rs at line 3
  [4.18483]

  [4.18483]
  + use std::str::FromStr;
• replacement in src/lib.rs at line 161
  [4.23214]→[4.23214:23246](∅→∅)
  − return Some(())
  [4.23214]

  [4.23246]
  + Some(())

  + },

  + None => None,

  + }

  + }

  +

  + fn peek(&self) -> Option<()> {

  + match self.top_token().next() {

  + Some(_) => Some(()),

  + None => None,

  + }

  + }

  +

  + pub fn assert_unique_top_token(&self) -> Result<()> {

  + match self.peek() {

  + None => Ok(()),

  + _ => Err(Error::new(ErrorKind::EUniqueTokenFMany)),

  + }

  + }

  +

  + pub fn val<T>(&self, key_path: &str) -> Result<T>

  + where

  + T: FromStr,

  + KeyTreeRef<'a>: TryInto<T>,

  + KeyTreeRef<'a>: TryInto<T, Error = Error>,

  + {

  + let path = KeyPath::from_str(key_path);

  + let kt = self.recurse(&path)?;

  + kt.assert_unique_top_token()?;

  + match kt.top_token() {

  + Token::KeyValue { key, value, .. } => {

  + match T::from_str(value) {

  + Ok(t) => Ok(t),

  + Err(err) => {

  + Err(Error::new(ErrorKind::FromStr(

  + format!("{}: {}", key, value),

  + format!("{}", kt.1),

  + )))

  + },

  + }
• replacement in src/lib.rs at line 202
  [4.23261]→[4.23261:23294](∅→∅)
  − None => return None,
  [4.23261]

  [4.23294]
  + _ => Err(Error::new(ErrorKind::EUniqueTokenFMany)),
• edit in src/lib.rs at line 206
  [4.23311]

  [4.4102]
  +
• replacement in src/lib.rs at line 216
  [4.23672]→[4.23672:23753](∅→∅),[4.23753]→[2.338:373](∅→∅),[2.373]→[4.23820:23894](∅→∅),[4.23820]→[4.23820:23894](∅→∅)
  −

  − // Check that top token is unique

  − match kt.top_token().next() {

  − None => kt.try_into(),

  − _ => Err(Error::new(ErrorKind::EUniqueTokenFMany)),

  − }
  [4.23672]

  [4.23894]
  + kt.assert_unique_top_token()?;

  + kt.try_into()
• replacement in src/into.rs at line 63
  [4.30331]→[4.30331:30404](∅→∅)
  − Err(Error::new(ErrorKind::FailedFromStr(
  [4.30331]

  [4.30404]
  + Err(Error::new(ErrorKind::FromStr(
• edit in src/into.rs at line 66
  [4.30543]→[4.30543:30602](∅→∅)
  − into_type.to_string(),
• replacement in src/error.rs at line 55
  [4.37700]→[4.37700:37842](∅→∅)
  − // `FromStr(value)` failed (key/value pair as string, position as string, into_type as string)

  − FailedFromStr(String, String, String),
  [4.37700]

  [4.37842]
  + // `FromStr(keyval, pos)

  + FromStr(String, String),
• replacement in src/error.rs at line 116
  [4.39429]→[4.39429:39490](∅→∅)
  − ErrorKind::FailedFromStr(_, _, _) => None,
  [4.39429]

  [4.39490]
  + ErrorKind::FromStr(_, _) => None,
• replacement in src/error.rs at line 148
  [3.5966]→[3.5966:6031](∅→∅)
  − ErrorKind::FailedFromStr(token, pos, into_type) => {
  [3.5966]

  [3.6031]
  + ErrorKind::FromStr(token, pos) => {
• replacement in src/error.rs at line 151
  [3.6078]→[3.6078:6189](∅→∅)
  − "Error: Couldn't read string into type {} at {}: \"{}\".",

  − into_type,
  [3.6078]

  [3.6189]
  + "Error: Couldn't parse string at {}: \"{}\".",
• edit in src/error.rs at line 179
  [4.41005]→[4.41005:41315](∅→∅)
  − ErrorKind::FailedFromStr(token, pos, into_type) => {

  − write!(

  − f,

  − "Error: Couldn't read string into type {} at {}: \"{}\".",

  − into_type,

  − pos,

  − token,

  − )

  − },

  −
• replacement in src/error.rs at line 393
  [4.46474]→[4.46474:46561](∅→∅)
  − ErrorKind::FailedFromStr(String::new(), String::new(), String::new()),
  [4.46474]

  [4.46561]
  + ErrorKind::FromStr(String::new(), String::new(), String::new()),
• replacement in examples/hobbit/src/main.rs at line 31
  [4.49495]→[4.6601:6695](∅→∅)
  − name: self.at("hobbit::name")?,

  − age: self.at("hobbit::age")?,
  [4.49495]

  [4.6695]
  + name: self.val("hobbit::name")?,

  + age: self.val("hobbit::age")?,