diff options
Diffstat (limited to 'crates/ra_syntax/src/parsing/lexer/numbers.rs')
-rw-r--r-- | crates/ra_syntax/src/parsing/lexer/numbers.rs | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/crates/ra_syntax/src/parsing/lexer/numbers.rs b/crates/ra_syntax/src/parsing/lexer/numbers.rs deleted file mode 100644 index e53ae231b..000000000 --- a/crates/ra_syntax/src/parsing/lexer/numbers.rs +++ /dev/null | |||
@@ -1,66 +0,0 @@ | |||
1 | use crate::parsing::lexer::{classes::*, ptr::Ptr}; | ||
2 | |||
3 | use crate::SyntaxKind::{self, *}; | ||
4 | |||
5 | pub(crate) fn scan_number(c: char, ptr: &mut Ptr) -> SyntaxKind { | ||
6 | if c == '0' { | ||
7 | match ptr.current().unwrap_or('\0') { | ||
8 | 'b' | 'o' => { | ||
9 | ptr.bump(); | ||
10 | scan_digits(ptr, false); | ||
11 | } | ||
12 | 'x' => { | ||
13 | ptr.bump(); | ||
14 | scan_digits(ptr, true); | ||
15 | } | ||
16 | '0'..='9' | '_' | '.' | 'e' | 'E' => { | ||
17 | scan_digits(ptr, true); | ||
18 | } | ||
19 | _ => return INT_NUMBER, | ||
20 | } | ||
21 | } else { | ||
22 | scan_digits(ptr, false); | ||
23 | } | ||
24 | |||
25 | // might be a float, but don't be greedy if this is actually an | ||
26 | // integer literal followed by field/method access or a range pattern | ||
27 | // (`0..2` and `12.foo()`) | ||
28 | if ptr.at('.') && !(ptr.at_str("..") || ptr.nth_is_p(1, is_ident_start)) { | ||
29 | // might have stuff after the ., and if it does, it needs to start | ||
30 | // with a number | ||
31 | ptr.bump(); | ||
32 | scan_digits(ptr, false); | ||
33 | scan_float_exponent(ptr); | ||
34 | return FLOAT_NUMBER; | ||
35 | } | ||
36 | // it might be a float if it has an exponent | ||
37 | if ptr.at('e') || ptr.at('E') { | ||
38 | scan_float_exponent(ptr); | ||
39 | return FLOAT_NUMBER; | ||
40 | } | ||
41 | INT_NUMBER | ||
42 | } | ||
43 | |||
44 | fn scan_digits(ptr: &mut Ptr, allow_hex: bool) { | ||
45 | while let Some(c) = ptr.current() { | ||
46 | match c { | ||
47 | '_' | '0'..='9' => { | ||
48 | ptr.bump(); | ||
49 | } | ||
50 | 'a'..='f' | 'A'..='F' if allow_hex => { | ||
51 | ptr.bump(); | ||
52 | } | ||
53 | _ => return, | ||
54 | } | ||
55 | } | ||
56 | } | ||
57 | |||
58 | fn scan_float_exponent(ptr: &mut Ptr) { | ||
59 | if ptr.at('e') || ptr.at('E') { | ||
60 | ptr.bump(); | ||
61 | if ptr.at('-') || ptr.at('+') { | ||
62 | ptr.bump(); | ||
63 | } | ||
64 | scan_digits(ptr, false); | ||
65 | } | ||
66 | } | ||