Method scan_number

compiler/src/modules/lexer/scan.rs:117–139

(&mut self, start: usize)

    }

    fn scan_number(&mut self, start: usize) -> TokenType {
        if self.src[start] == b'0' && self.pos < self.src.len() {
            match self.src[self.pos] {
                b'x' | b'X' => { self.pos += 1; let b = self.pos; self.scan_hex_digits(); self.check_digits(b, self.pos, false); return TokenType::Int; }
                b'o' | b'O' => { self.pos += 1; let b = self.pos; self.scan_oct_digits(); self.check_digits(b, self.pos, false); return TokenType::Int; }
                b'b' | b'B' => { self.pos += 1; let b = self.pos; self.scan_bin_digits(); self.check_digits(b, self.pos, false); return TokenType::Int; }
                _ => {}
            }
        }
        self.scan_digits();
        self.check_digits(start, self.pos, false);
        let mut is_float = false;
        if self.pos < self.src.len() && self.src[self.pos] == b'.' && self.at(1) != Some(b'.') {
            is_float = true;
            self.pos += 1;
            let frac_start = self.pos;
            self.scan_digits();
            // Trailing dot like `5.` is valid; only validate non-empty fractions.
            self.check_digits(frac_start, self.pos, true);
        }
        is_float |= self.scan_exponent();
        if is_float { TokenType::Float } else { TokenType::Int }
    }

    fn scan_dot_number(&mut self) -> TokenType {
        let body_start = self.pos;