koniifer/holey-bytes
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support hex, octal, binary literals

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koniifer 2024-09-01 18:42:04 +01:00
parent 9af7bf559f
commit 781c40ede0
2 changed files with 24 additions and 3 deletions
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12
hblang/src/lexer.rs
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@ -292,6 +292,18 @@ impl<'a> Lexer<'a> {
let kind = match c {
..=b' ' => continue,
b'0' if self.advance_if(b'x') => {
while let Some(b'0'..=b'9') = self.peek() {
self.advance();
}
T::Number
}
b'0' if self.advance_if(b'b') => {
while let Some(b'0'..=b'9') = self.peek() {
self.advance();
}
T::Number
}
b'0'..=b'9' => {
while let Some(b'0'..=b'9') = self.peek() {
self.advance();

15
hblang/src/parser.rs
View file

@ -391,9 +391,18 @@ impl<'a, 'b> Parser<'a, 'b> {
},
T::Number => E::Number {
pos: token.start,
value: match self.lexer.slice(token.range()).parse() {
Ok(value) => value,
Err(e) => self.report(format_args!("invalid number: {e}")),
value: {
let slice = self.lexer.slice(token.range());
let (slice, radix) = match &slice.get(0..2) {
Some("0x") => (slice.trim_start_matches("0x"), 16),
Some("0b") => (slice.trim_start_matches("0b"), 16),
Some("0o") => (slice.trim_start_matches("0o"), 16),
_ => (slice, 10),
};
match u64::from_str_radix(slice, radix) {
Ok(value) => value,
Err(e) => self.report(format_args!("invalid number: {e}")),
}
},
},
T::LParen => {