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use serde::{Deserialize, Deserializer};
/// Client provided initialization options
#[derive(Deserialize, Clone, Copy, Debug, PartialEq, Eq)]
#[serde(rename_all = "camelCase", default)]
pub struct InitializationOptions {
/// Whether the client supports our custom highlighting publishing decorations.
/// This is different to the highlightingOn setting, which is whether the user
/// wants our custom highlighting to be used.
///
/// Defaults to `false`
#[serde(deserialize_with = "nullable_bool_false")]
pub publish_decorations: bool,
/// Whether or not the workspace loaded notification should be sent
///
/// Defaults to `true`
#[serde(deserialize_with = "nullable_bool_true")]
pub show_workspace_loaded: bool,
pub lru_capacity: Option<usize>,
}
impl Default for InitializationOptions {
fn default() -> InitializationOptions {
InitializationOptions {
publish_decorations: false,
show_workspace_loaded: true,
lru_capacity: None,
}
}
}
/// Deserializes a null value to a bool false by default
fn nullable_bool_false<'de, D>(deserializer: D) -> Result<bool, D::Error>
where
D: Deserializer<'de>,
{
let opt = Option::deserialize(deserializer)?;
Ok(opt.unwrap_or(false))
}
/// Deserializes a null value to a bool true by default
fn nullable_bool_true<'de, D>(deserializer: D) -> Result<bool, D::Error>
where
D: Deserializer<'de>,
{
let opt = Option::deserialize(deserializer)?;
Ok(opt.unwrap_or(true))
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn deserialize_init_options_defaults() {
// check that null == default for both fields
let default = InitializationOptions::default();
assert_eq!(default, serde_json::from_str(r#"{}"#).unwrap());
assert_eq!(
default,
serde_json::from_str(
r#"{"publishDecorations":null, "showWorkspaceLoaded":null, "lruCapacity":null}"#
)
.unwrap()
);
}
}
|
