From 3ad0037f907778d20ce6cfd9bf676a467b5734ad Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sat, 5 Jan 2019 17:22:41 +0300
Subject: move hover implementation to ra_analysis

---
 crates/ra_lsp_server/src/main_loop/handlers.rs | 50 +++++---------------------
 1 file changed, 9 insertions(+), 41 deletions(-)

(limited to 'crates/ra_lsp_server')

diff --git a/crates/ra_lsp_server/src/main_loop/handlers.rs b/crates/ra_lsp_server/src/main_loop/handlers.rs
index 2fc4d3649..ffca3f51c 100644
--- a/crates/ra_lsp_server/src/main_loop/handlers.rs
+++ b/crates/ra_lsp_server/src/main_loop/handlers.rs
@@ -9,7 +9,7 @@ use languageserver_types::{
     Range, WorkspaceEdit, ParameterInformation, ParameterLabel, SignatureInformation, Hover,
     HoverContents, DocumentFormattingParams, DocumentHighlight,
 };
-use ra_analysis::{FileId, FoldKind, Query, RunnableKind, FileRange, FilePosition, Severity, NavigationTarget};
+use ra_analysis::{FileId, FoldKind, Query, RunnableKind, FileRange, FilePosition, Severity};
 use ra_syntax::{TextUnit, text_utils::intersect};
 use ra_text_edit::text_utils::contains_offset_nonstrict;
 use rustc_hash::FxHashMap;
@@ -509,36 +509,18 @@ pub fn handle_hover(
     world: ServerWorld,
     params: req::TextDocumentPositionParams,
 ) -> Result<Option<Hover>> {
-    // TODO: Cut down on number of allocations
     let position = params.try_conv_with(&world)?;
-    let line_index = world.analysis().file_line_index(position.file_id);
-    let rr = match world.analysis().approximately_resolve_symbol(position)? {
+    let info = match world.analysis().hover(position)? {
         None => return Ok(None),
-        Some(it) => it,
+        Some(info) => info,
     };
-    let mut result = Vec::new();
-    let file_id = params.text_document.try_conv_with(&world)?;
-    let file_range = FileRange {
-        file_id,
-        range: rr.reference_range,
+    let line_index = world.analysis.file_line_index(position.file_id);
+    let range = info.range.conv_with(&line_index);
+    let res = Hover {
+        contents: HoverContents::Scalar(MarkedString::String(info.info)),
+        range: Some(range),
     };
-    if let Some(type_name) = get_type(&world, file_range) {
-        result.push(type_name);
-    }
-    for nav in rr.resolves_to {
-        if let Some(docs) = get_doc_text(&world, nav) {
-            result.push(docs);
-        }
-    }
-
-    let range = rr.reference_range.conv_with(&line_index);
-    if result.len() > 0 {
-        return Ok(Some(Hover {
-            contents: HoverContents::Scalar(MarkedString::String(result.join("\n\n---\n"))),
-            range: Some(range),
-        }));
-    }
-    Ok(None)
+    Ok(Some(res))
 }
 
 /// Test doc comment
@@ -762,17 +744,3 @@ fn to_diagnostic_severity(severity: Severity) -> DiagnosticSeverity {
         WeakWarning => DiagnosticSeverity::Hint,
     }
 }
-
-fn get_type(world: &ServerWorld, file_range: FileRange) -> Option<String> {
-    match world.analysis().type_of(file_range) {
-        Ok(result) => result,
-        _ => None,
-    }
-}
-
-fn get_doc_text(world: &ServerWorld, nav: NavigationTarget) -> Option<String> {
-    match world.analysis().doc_text_for(nav) {
-        Ok(result) => result,
-        _ => None,
-    }
-}
-- 
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