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Diffstat (limited to 'vendor/fluent-bundle/src/types/number.rs')
| -rw-r--r-- | vendor/fluent-bundle/src/types/number.rs | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/vendor/fluent-bundle/src/types/number.rs b/vendor/fluent-bundle/src/types/number.rs new file mode 100644 index 000000000..d39291ff4 --- /dev/null +++ b/vendor/fluent-bundle/src/types/number.rs @@ -0,0 +1,252 @@ +use std::borrow::Cow; +use std::convert::TryInto; +use std::default::Default; +use std::str::FromStr; + +use intl_pluralrules::operands::PluralOperands; + +use crate::args::FluentArgs; +use crate::types::FluentValue; + +#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)] +pub enum FluentNumberStyle { + Decimal, + Currency, + Percent, +} + +impl std::default::Default for FluentNumberStyle { + fn default() -> Self { + Self::Decimal + } +} + +impl From<&str> for FluentNumberStyle { + fn from(input: &str) -> Self { + match input { + "decimal" => Self::Decimal, + "currency" => Self::Currency, + "percent" => Self::Percent, + _ => Self::default(), + } + } +} + +#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)] +pub enum FluentNumberCurrencyDisplayStyle { + Symbol, + Code, + Name, +} + +impl std::default::Default for FluentNumberCurrencyDisplayStyle { + fn default() -> Self { + Self::Symbol + } +} + +impl From<&str> for FluentNumberCurrencyDisplayStyle { + fn from(input: &str) -> Self { + match input { + "symbol" => Self::Symbol, + "code" => Self::Code, + "name" => Self::Name, + _ => Self::default(), + } + } +} + +#[derive(Debug, Clone, Hash, PartialEq, Eq)] +pub struct FluentNumberOptions { + pub style: FluentNumberStyle, + pub currency: Option<String>, + pub currency_display: FluentNumberCurrencyDisplayStyle, + pub use_grouping: bool, + pub minimum_integer_digits: Option<usize>, + pub minimum_fraction_digits: Option<usize>, + pub maximum_fraction_digits: Option<usize>, + pub minimum_significant_digits: Option<usize>, + pub maximum_significant_digits: Option<usize>, +} + +impl Default for FluentNumberOptions { + fn default() -> Self { + Self { + style: Default::default(), + currency: None, + currency_display: Default::default(), + use_grouping: true, + minimum_integer_digits: None, + minimum_fraction_digits: None, + maximum_fraction_digits: None, + minimum_significant_digits: None, + maximum_significant_digits: None, + } + } +} + +impl FluentNumberOptions { + pub fn merge(&mut self, opts: &FluentArgs) { + for (key, value) in opts.iter() { + match (key, value) { + ("style", FluentValue::String(n)) => { + self.style = n.as_ref().into(); + } + ("currency", FluentValue::String(n)) => { + self.currency = Some(n.to_string()); + } + ("currencyDisplay", FluentValue::String(n)) => { + self.currency_display = n.as_ref().into(); + } + ("useGrouping", FluentValue::String(n)) => { + self.use_grouping = n != "false"; + } + ("minimumIntegerDigits", FluentValue::Number(n)) => { + self.minimum_integer_digits = Some(n.into()); + } + ("minimumFractionDigits", FluentValue::Number(n)) => { + self.minimum_fraction_digits = Some(n.into()); + } + ("maximumFractionDigits", FluentValue::Number(n)) => { + self.maximum_fraction_digits = Some(n.into()); + } + ("minimumSignificantDigits", FluentValue::Number(n)) => { + self.minimum_significant_digits = Some(n.into()); + } + ("maximumSignificantDigits", FluentValue::Number(n)) => { + self.maximum_significant_digits = Some(n.into()); + } + _ => {} + } + } + } +} + +#[derive(Debug, PartialEq, Clone)] +pub struct FluentNumber { + pub value: f64, + pub options: FluentNumberOptions, +} + +impl FluentNumber { + pub const fn new(value: f64, options: FluentNumberOptions) -> Self { + Self { value, options } + } + + pub fn as_string(&self) -> Cow<'static, str> { + let mut val = self.value.to_string(); + if let Some(minfd) = self.options.minimum_fraction_digits { + if let Some(pos) = val.find('.') { + let frac_num = val.len() - pos - 1; + let missing = if frac_num > minfd { + 0 + } else { + minfd - frac_num + }; + val = format!("{}{}", val, "0".repeat(missing)); + } else { + val = format!("{}.{}", val, "0".repeat(minfd)); + } + } + val.into() + } +} + +impl FromStr for FluentNumber { + type Err = std::num::ParseFloatError; + + fn from_str(input: &str) -> Result<Self, Self::Err> { + f64::from_str(input).map(|n| { + let mfd = input.find('.').map(|pos| input.len() - pos - 1); + let opts = FluentNumberOptions { + minimum_fraction_digits: mfd, + ..Default::default() + }; + Self::new(n, opts) + }) + } +} + +impl<'l> From<FluentNumber> for FluentValue<'l> { + fn from(input: FluentNumber) -> Self { + FluentValue::Number(input) + } +} + +macro_rules! from_num { + ($num:ty) => { + impl From<$num> for FluentNumber { + fn from(n: $num) -> Self { + Self { + value: n as f64, + options: FluentNumberOptions::default(), + } + } + } + impl From<&$num> for FluentNumber { + fn from(n: &$num) -> Self { + Self { + value: *n as f64, + options: FluentNumberOptions::default(), + } + } + } + impl From<FluentNumber> for $num { + fn from(input: FluentNumber) -> Self { + input.value as $num + } + } + impl From<&FluentNumber> for $num { + fn from(input: &FluentNumber) -> Self { + input.value as $num + } + } + impl From<$num> for FluentValue<'_> { + fn from(n: $num) -> Self { + FluentValue::Number(n.into()) + } + } + impl From<&$num> for FluentValue<'_> { + fn from(n: &$num) -> Self { + FluentValue::Number(n.into()) + } + } + }; + ($($num:ty)+) => { + $(from_num!($num);)+ + }; +} + +impl From<&FluentNumber> for PluralOperands { + fn from(input: &FluentNumber) -> Self { + let mut operands: Self = input + .value + .try_into() + .expect("Failed to generate operands out of FluentNumber"); + if let Some(mfd) = input.options.minimum_fraction_digits { + if mfd > operands.v { + operands.f *= 10_u64.pow(mfd as u32 - operands.v as u32); + operands.v = mfd; + } + } + // XXX: Add support for other options. + operands + } +} + +from_num!(i8 i16 i32 i64 i128 isize); +from_num!(u8 u16 u32 u64 u128 usize); +from_num!(f32 f64); + +#[cfg(test)] +mod tests { + use crate::types::FluentValue; + + #[test] + fn value_from_copy_ref() { + let x = 1i16; + let y = &x; + let z: FluentValue = y.into(); + assert_eq!(z, FluentValue::try_number(1)); + } +} |