Rename Item::document property to shard to match LSIF spec

src/lsif.rs

@@ -129,6 +129,7 @@ pub enum RangeTag {
 #[serde(rename_all = "camelCase")]
 #[serde(tag = "label")]
 pub enum Vertex {
+    Capabilities(Capabilities),
     MetaData(MetaData),
     /// <https://github.com/Microsoft/language-server-protocol/blob/master/indexFormat/specification.md#the-project-vertex>
     Project(Project),
@@ -260,6 +261,7 @@ pub enum ItemKind {
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct Item {
+    #[serde(rename = "shard")]
     pub document: Id,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub property: Option<ItemKind>,
@@ -293,6 +295,19 @@ pub struct Project {
     pub kind: String,
 }
 
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Capabilities {
+    pub hover_provider: bool,
+    pub declaration_provider: bool,
+    pub definition_provider: bool,
+    pub references_provider: bool,
+    pub type_definition_provider: bool,
+    pub document_symbol_provider: bool,
+    pub folding_range_provider: bool,
+    pub diagnostic_provider: bool,
+}
+
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct MetaData {