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Lower float literals with underscores

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This commit is contained in:
Chayim Refael Friedman 2022-09-01 00:11:32 +00:00
parent 989b09d20c
commit 2eec4ed69d
1 changed files with 19 additions and 2 deletions
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21
crates/syntax/src/ast/token_ext.rs
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@ -322,7 +322,7 @@ impl ast::IntNumber {
pub fn float_value(&self) -> Option<f64> {
let (_, text, _) = self.split_into_parts();
text.parse::<f64>().ok()
text.replace('_', "").parse::<f64>().ok()
}
}
@ -361,7 +361,7 @@ impl ast::FloatNumber {
pub fn value(&self) -> Option<f64> {
let (text, _) = self.split_into_parts();
text.parse::<f64>().ok()
text.replace('_', "").parse::<f64>().ok()
}
}
@ -397,6 +397,15 @@ mod tests {
assert_eq!(IntNumber { syntax: make::tokens::literal(lit) }.suffix(), expected.into());
}
fn check_float_value(lit: &str, expected: impl Into<Option<f64>> + Copy) {
assert_eq!(FloatNumber { syntax: make::tokens::literal(lit) }.value(), expected.into());
assert_eq!(IntNumber { syntax: make::tokens::literal(lit) }.float_value(), expected.into());
}
fn check_int_value(lit: &str, expected: impl Into<Option<u128>>) {
assert_eq!(IntNumber { syntax: make::tokens::literal(lit) }.value(), expected.into());
}
#[test]
fn test_float_number_suffix() {
check_float_suffix("123.0", None);
@ -437,6 +446,14 @@ mod tests {
check_string_value(r"\nfoobar", "\nfoobar");
check_string_value(r"C:\\Windows\\System32\\", "C:\\Windows\\System32\\");
}
#[test]
fn test_value_underscores() {
check_float_value("3.141592653589793_f64", 3.141592653589793_f64);
check_float_value("1__0.__0__f32", 10.0);
check_int_value("0b__1_0_", 2);
check_int_value("1_1_1_1_1_1", 111111);
}
}
impl ast::Char {