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Refactoring: Use function chaining rather than matching

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This commit is contained in:
Matthias Beyer 2018-01-04 23:09:30 +01:00
parent dd66936e48
commit 40490c10d6
1 changed files with 26 additions and 30 deletions
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56
lib/etc/libimaginteraction/src/readline.rs
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@ -42,40 +42,36 @@ impl Readline {
let histignspace = c.lookup("ui.cli.readline_history_ignore_space").ok_or(IEK::ConfigError)?;
let prompt = c.lookup("ui.cli.readline_prompt").ok_or(IEK::ConfigError)?;
let histfile = match histfile {
Value::String(s) => PathBuf::from(s),
_ => Err(IE::from_kind(IEK::ConfigTypeError))
.chain_err(|| IEK::ConfigError)
.chain_err(|| IEK::ReadlineError)
}?;
let histfile = histfile
.as_str()
.map(PathBuf::from)
.ok_or(IE::from_kind(IEK::ConfigTypeError))
.chain_err(|| IEK::ConfigError)
.chain_err(|| IEK::ReadlineError)?;
let histsize = match histsize {
Value::Integer(i) => i,
_ => Err(IE::from_kind(IEK::ConfigTypeError))
.chain_err(|| IEK::ConfigError)
.chain_err(|| IEK::ReadlineError)
}?;
let histsize = histsize
.as_int()
.ok_or(IE::from_kind(IEK::ConfigTypeError))
.chain_err(|| IEK::ConfigError)
.chain_err(|| IEK::ReadlineError)?;
let histigndups = match histigndups {
Value::Boolean(b) => b,
_ => Err(IE::from_kind(IEK::ConfigTypeError))
.chain_err(|| IEK::ConfigError)
.chain_err(|| IEK::ReadlineError)
}?;
let histigndups = histigndups
.as_bool()
.ok_or(IE::from_kind(IEK::ConfigTypeError))
.chain_err(|| IEK::ConfigError)
.chain_err(|| IEK::ReadlineError)?;
let histignspace = match histignspace {
Value::Boolean(b) => b,
_ => Err(IE::from_kind(IEK::ConfigTypeError))
.chain_err(|| IEK::ConfigError)
.chain_err(|| IEK::ReadlineError)
}?;
let histignspace = histignspace
.as_bool()
.ok_or(IE::from_kind(IEK::ConfigTypeError))
.chain_err(|| IEK::ConfigError)
.chain_err(|| IEK::ReadlineError)?;
let prompt = match prompt {
Value::String(s) => s,
_ => Err(IE::from_kind(IEK::ConfigTypeError))
.chain_err(|| IEK::ConfigError)
.chain_err(|| IEK::ReadlineError)
}?;
let prompt = prompt
.as_str()
.ok_or(IE::from_kind(IEK::ConfigTypeError))
.chain_err(|| IEK::ConfigError)
.chain_err(|| IEK::ReadlineError)?;
let config = Config::builder().
.max_history_size(histsize)