5467: Allow null or empty values for configuration r=matklad a=kjeremy

Allow the client to respond to `workspace/configuration` with `null` values. This is allowed per the spec if the client doesn't know about the configuration we've requested.

This also protects against `null` or `{}` during initialize. I'm not sure if we want to interpret `{}` as "don't change anything" but I think that's a reasonable approach to take.

This should help with LSP clients working out of the box.

Fixes #5464 

Co-authored-by: kjeremy <kjeremy@gmail.com>
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bors[bot] 2020-07-21 09:41:54 +00:00 committed by GitHub
commit 818aeb8a24
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2 changed files with 7 additions and 0 deletions

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@ -178,6 +178,11 @@ impl Config {
pub fn update(&mut self, json: serde_json::Value) {
log::info!("Config::update({:#})", json);
if json.is_null() || json.as_object().map_or(false, |it| it.is_empty()) {
return;
}
let data = ConfigData::from_json(json);
self.with_sysroot = data.withSysroot;

View file

@ -468,6 +468,8 @@ impl GlobalState {
}
(None, Some(mut configs)) => {
if let Some(json) = configs.get_mut(0) {
// Note that json can be null according to the spec if the client can't
// provide a configuration. This is handled in Config::update below.
let mut config = this.config.clone();
config.update(json.take());
this.update_configuration(config);