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authorAleksey Kladov <[email protected]>2020-02-06 11:18:52 +0000
committerAleksey Kladov <[email protected]>2020-02-06 11:18:52 +0000
commitec95152a4ec1ed617452c8578df128a117ab0b5d (patch)
tree6e0a0515fa22254d76ba19f345a5417b297c602e /crates/ra_ide/src/feature_flags.rs
parentee2ee1a8ff7ad13211d2f66d2f2f1daaf3a00bd9 (diff)
Move FeatureFlags
Diffstat (limited to 'crates/ra_ide/src/feature_flags.rs')
-rw-r--r--crates/ra_ide/src/feature_flags.rs71
1 files changed, 0 insertions, 71 deletions
diff --git a/crates/ra_ide/src/feature_flags.rs b/crates/ra_ide/src/feature_flags.rs
deleted file mode 100644
index 85617640d..000000000
--- a/crates/ra_ide/src/feature_flags.rs
+++ /dev/null
@@ -1,71 +0,0 @@
1//! FIXME: write short doc here
2
3use rustc_hash::FxHashMap;
4
5/// Feature flags hold fine-grained toggles for all *user-visible* features of
6/// rust-analyzer.
7///
8/// The exists such that users are able to disable any annoying feature (and,
9/// with many users and many features, some features are bound to be annoying
10/// for some users)
11///
12/// Note that we purposefully use run-time checked strings, and not something
13/// checked at compile time, to keep things simple and flexible.
14///
15/// Also note that, at the moment, `FeatureFlags` also store features for
16/// `ra_lsp_server`. This should be benign layering violation.
17#[derive(Debug)]
18pub struct FeatureFlags {
19 flags: FxHashMap<String, bool>,
20}
21
22impl FeatureFlags {
23 fn new(flags: &[(&str, bool)]) -> FeatureFlags {
24 let flags = flags
25 .iter()
26 .map(|&(name, value)| {
27 check_flag_name(name);
28 (name.to_string(), value)
29 })
30 .collect();
31 FeatureFlags { flags }
32 }
33
34 pub fn set(&mut self, flag: &str, value: bool) -> Result<(), ()> {
35 match self.flags.get_mut(flag) {
36 None => Err(()),
37 Some(slot) => {
38 *slot = value;
39 Ok(())
40 }
41 }
42 }
43
44 pub fn get(&self, flag: &str) -> bool {
45 match self.flags.get(flag) {
46 None => panic!("unknown flag: {:?}", flag),
47 Some(value) => *value,
48 }
49 }
50}
51
52impl Default for FeatureFlags {
53 fn default() -> FeatureFlags {
54 FeatureFlags::new(&[
55 ("lsp.diagnostics", true),
56 ("completion.insertion.add-call-parenthesis", true),
57 ("completion.enable-postfix", true),
58 ("notifications.workspace-loaded", true),
59 ("notifications.cargo-toml-not-found", true),
60 ])
61 }
62}
63
64fn check_flag_name(flag: &str) {
65 for c in flag.bytes() {
66 match c {
67 b'a'..=b'z' | b'-' | b'.' => (),
68 _ => panic!("flag name does not match conventions: {:?}", flag),
69 }
70 }
71}