diff options
Diffstat (limited to 'crates/ra_ide_db/src/feature_flags.rs')
-rw-r--r-- | crates/ra_ide_db/src/feature_flags.rs | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/crates/ra_ide_db/src/feature_flags.rs b/crates/ra_ide_db/src/feature_flags.rs deleted file mode 100644 index dbb3f50a0..000000000 --- a/crates/ra_ide_db/src/feature_flags.rs +++ /dev/null | |||
@@ -1,77 +0,0 @@ | |||
1 | //! See docs for `FeatureFlags`. | ||
2 | |||
3 | use rustc_hash::FxHashMap; | ||
4 | |||
5 | // FIXME: looks like a much better design is to pass options to each call, | ||
6 | // rather than to have a global ambient feature flags -- that way, the clients | ||
7 | // can issue two successive calls with different options. | ||
8 | |||
9 | /// Feature flags hold fine-grained toggles for all *user-visible* features of | ||
10 | /// rust-analyzer. | ||
11 | /// | ||
12 | /// The exists such that users are able to disable any annoying feature (and, | ||
13 | /// with many users and many features, some features are bound to be annoying | ||
14 | /// for some users) | ||
15 | /// | ||
16 | /// Note that we purposefully use run-time checked strings, and not something | ||
17 | /// checked at compile time, to keep things simple and flexible. | ||
18 | /// | ||
19 | /// Also note that, at the moment, `FeatureFlags` also store features for | ||
20 | /// `rust-analyzer`. This should be benign layering violation. | ||
21 | #[derive(Debug)] | ||
22 | pub struct FeatureFlags { | ||
23 | flags: FxHashMap<String, bool>, | ||
24 | } | ||
25 | |||
26 | impl FeatureFlags { | ||
27 | fn new(flags: &[(&str, bool)]) -> FeatureFlags { | ||
28 | let flags = flags | ||
29 | .iter() | ||
30 | .map(|&(name, value)| { | ||
31 | check_flag_name(name); | ||
32 | (name.to_string(), value) | ||
33 | }) | ||
34 | .collect(); | ||
35 | FeatureFlags { flags } | ||
36 | } | ||
37 | |||
38 | pub fn set(&mut self, flag: &str, value: bool) -> Result<(), ()> { | ||
39 | match self.flags.get_mut(flag) { | ||
40 | None => Err(()), | ||
41 | Some(slot) => { | ||
42 | *slot = value; | ||
43 | Ok(()) | ||
44 | } | ||
45 | } | ||
46 | } | ||
47 | |||
48 | pub fn get(&self, flag: &str) -> bool { | ||
49 | match self.flags.get(flag) { | ||
50 | None => panic!("unknown flag: {:?}", flag), | ||
51 | Some(value) => *value, | ||
52 | } | ||
53 | } | ||
54 | } | ||
55 | |||
56 | impl Default for FeatureFlags { | ||
57 | fn default() -> FeatureFlags { | ||
58 | FeatureFlags::new(&[ | ||
59 | ("lsp.diagnostics", true), | ||
60 | ("completion.insertion.add-call-parenthesis", true), | ||
61 | ("completion.insertion.add-argument-snippets", true), | ||
62 | ("completion.enable-postfix", true), | ||
63 | ("call-info.full", true), | ||
64 | ("notifications.workspace-loaded", true), | ||
65 | ("notifications.cargo-toml-not-found", true), | ||
66 | ]) | ||
67 | } | ||
68 | } | ||
69 | |||
70 | fn check_flag_name(flag: &str) { | ||
71 | for c in flag.bytes() { | ||
72 | match c { | ||
73 | b'a'..=b'z' | b'-' | b'.' => (), | ||
74 | _ => panic!("flag name does not match conventions: {:?}", flag), | ||
75 | } | ||
76 | } | ||
77 | } | ||