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use crate::config::delta_unreachable;
/// A value associated with a Delta command-line option name.
pub enum OptionValue {
Boolean(bool),
Float(f64),
OptionString(Option<String>),
String(String),
Int(usize),
}
/// An OptionValue, tagged according to its provenance/semantics.
pub enum ProvenancedOptionValue {
GitConfigValue(OptionValue),
DefaultValue(OptionValue),
}
impl From<bool> for OptionValue {
fn from(value: bool) -> Self {
OptionValue::Boolean(value)
}
}
impl From<OptionValue> for bool {
fn from(value: OptionValue) -> Self {
match value {
OptionValue::Boolean(value) => value,
_ => delta_unreachable("Error converting OptionValue to bool."),
}
}
}
impl From<f64> for OptionValue {
fn from(value: f64) -> Self {
OptionValue::Float(value)
}
}
impl From<OptionValue> for f64 {
fn from(value: OptionValue) -> Self {
match value {
OptionValue::Float(value) => value,
_ => delta_unreachable("Error converting OptionValue to f64."),
}
}
}
impl From<Option<String>> for OptionValue {
fn from(value: Option<String>) -> Self {
OptionValue::OptionString(value)
}
}
impl From<OptionValue> for Option<String> {
fn from(value: OptionValue) -> Self {
match value {
OptionValue::OptionString(value) => value,
// HACK: See the comment in options::set::compute_line_numbers_mode(). That function
// deliberately reads what is normally a boolean value ('line-numbers') as a string.
// However options::get::get_option_value() can fall through to obtaining the value
// from builtin_features, in which case an OptionValue::Boolean will be encountered.
// See the comment in options::set::compute_line_numbers_mode() and docstring of
// options::get::get_option_value().
OptionValue::Boolean(_) => None,
_ => delta_unreachable("Error converting OptionValue to Option<String>."),
}
}
}
impl From<String> for OptionValue {
fn from(value: String) -> Self {
OptionValue::String(value)
}
}
impl From<&str> for OptionValue {
fn from(value: &str) -> Self {
value.to_string().into()
}
}
impl From<OptionValue> for String {
fn from(value: OptionValue) -> Self {
match value {
OptionValue::String(value) => value,
_ => delta_unreachable("Error converting OptionValue to String."),
}
}
}
impl From<usize> for OptionValue {
fn from(value: usize) -> Self {
OptionValue::Int(value)
}
}
impl From<OptionValue> for usize {
fn from(value: OptionValue) -> Self {
match value {
OptionValue::Int(value) => value,
_ => delta_unreachable("Error converting OptionValue to usize."),
}
}
}
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