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fix: f32 and f64 representation during lowering

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feniljain 2022-05-26 16:05:25 +05:30
parent d7c147406e
commit 1f4870ff1c
4 changed files with 132 additions and 10 deletions
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42
crates/syntax/src/ast/token_ext.rs
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@ -319,17 +319,49 @@ impl ast::IntNumber {
Some(suffix)
}
}
pub fn float_value(&self) -> Option<f64> {
let (_, text, _) = self.split_into_parts();
text.parse::<f64>().ok()
}
}
impl ast::FloatNumber {
pub fn suffix(&self) -> Option<&str> {
pub fn split_into_parts(&self) -> (&str, &str) {
let text = self.text();
let mut float_text = self.text();
let mut suffix = "";
let mut indices = text.char_indices();
let (mut suffix_start, c) = indices.by_ref().find(|(_, c)| c.is_ascii_alphabetic())?;
if c == 'e' || c == 'E' {
suffix_start = indices.find(|(_, c)| c.is_ascii_alphabetic())?.0;
if let Some((mut suffix_start, c)) = indices.by_ref().find(|(_, c)| c.is_ascii_alphabetic())
{
if c == 'e' || c == 'E' {
if let Some(suffix_start_tuple) = indices.find(|(_, c)| c.is_ascii_alphabetic()) {
suffix_start = suffix_start_tuple.0;
float_text = &text[..suffix_start];
suffix = &text[suffix_start..];
}
} else {
float_text = &text[..suffix_start];
suffix = &text[suffix_start..];
}
}
Some(&text[suffix_start..])
(float_text, suffix)
}
pub fn suffix(&self) -> Option<&str> {
let (_, suffix) = self.split_into_parts();
if suffix.is_empty() {
None
} else {
Some(suffix)
}
}
pub fn value(&self) -> Option<f64> {
let (text, _) = self.split_into_parts();
text.parse::<f64>().ok()
}
}