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Properly implement percentage() error messages

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This commit is contained in:
ConnorSkees 2020-02-16 18:26:57 -05:00
parent af5c945dfa
commit 908104ec1c
1 changed files with 2 additions and 1 deletions
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3
src/builtin/math.rs
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@ -9,7 +9,8 @@ pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
max_args!(args, 1); max_args!(args, 1);
let num = match arg!(args, 0, "number").eval() { let num = match arg!(args, 0, "number").eval() {
Value::Dimension(n, Unit::None) => n * Number::from(100), Value::Dimension(n, Unit::None) => n * Number::from(100),
_ => todo!("expected unitless number in builtin function `percentage()`") v @ Value::Dimension(..) => return Err(format!("$number: Expected {} to have no units.", v).into()),
v => return Err(format!("$number: {} is not a number.", v).into()),
}; };
Ok(Value::Dimension(num, Unit::Percent)) Ok(Value::Dimension(num, Unit::Percent))
}); });