From 9582a439e11fbd214e1b8941d2319b8ac7e4ae51 Mon Sep 17 00:00:00 2001
From: "Jeremy A. Kolb" <jkolb@ara.com>
Date: Tue, 22 Jan 2019 16:28:02 -0500
Subject: Simplify CallInfo label and documentation

---
 crates/ra_ide_api/src/call_info.rs | 47 ++++++--------------------------------
 1 file changed, 7 insertions(+), 40 deletions(-)

diff --git a/crates/ra_ide_api/src/call_info.rs b/crates/ra_ide_api/src/call_info.rs
index 18b9508ef..798fb7c13 100644
--- a/crates/ra_ide_api/src/call_info.rs
+++ b/crates/ra_ide_api/src/call_info.rs
@@ -1,5 +1,3 @@
-use std::cmp::{max, min};
-
 use ra_db::SyntaxDatabase;
 use ra_syntax::{
     AstNode, SyntaxNode, TextUnit, TextRange,
@@ -107,15 +105,13 @@ impl<'a> FnCallNode<'a> {
 
 impl CallInfo {
     fn new(node: &ast::FnDef) -> Option<Self> {
-        let mut doc = None;
-
-        // Strip the body out for the label.
-        let mut label: String = if let Some(body) = node.body() {
+        let label: String = if let Some(body) = node.body() {
             let body_range = body.syntax().range();
             let label: String = node
                 .syntax()
                 .children()
-                .filter(|child| !child.range().is_subrange(&body_range))
+                .filter(|child| !child.range().is_subrange(&body_range)) // Filter out body
+                .filter(|child| ast::Comment::cast(child).is_none()) // Filter out doc comments
                 .map(|node| node.text().to_string())
                 .collect();
             label
@@ -123,16 +119,9 @@ impl CallInfo {
             node.syntax().text().to_string()
         };
 
-        if let Some((comment_range, docs)) = extract_doc_comments(node) {
-            let comment_range = comment_range
-                .checked_sub(node.syntax().range().start())
-                .unwrap();
-            let start = comment_range.start().to_usize();
-            let end = comment_range.end().to_usize();
-
-            // Remove the comment from the label
-            label.replace_range(start..end, "");
-
+        let mut doc = None;
+        let docs = node.doc_comment_text();
+        if !docs.is_empty() {
             // Massage markdown
             let mut processed_lines = Vec::new();
             let mut in_code_block = false;
@@ -150,9 +139,7 @@ impl CallInfo {
                 processed_lines.push(line);
             }
 
-            if !processed_lines.is_empty() {
-                doc = Some(processed_lines.join("\n"));
-            }
+            doc = Some(processed_lines.join("\n"));
         }
 
         Some(CallInfo {
@@ -164,26 +151,6 @@ impl CallInfo {
     }
 }
 
-fn extract_doc_comments(node: &ast::FnDef) -> Option<(TextRange, String)> {
-    if node.doc_comments().count() == 0 {
-        return None;
-    }
-
-    let comment_text = node.doc_comment_text();
-
-    let (begin, end) = node
-        .doc_comments()
-        .map(|comment| comment.syntax().range())
-        .map(|range| (range.start().to_usize(), range.end().to_usize()))
-        .fold((std::usize::MAX, std::usize::MIN), |acc, range| {
-            (min(acc.0, range.0), max(acc.1, range.1))
-        });
-
-    let range = TextRange::from_to(TextUnit::from_usize(begin), TextUnit::from_usize(end));
-
-    Some((range, comment_text))
-}
-
 fn param_list(node: &ast::FnDef) -> Vec<String> {
     let mut res = vec![];
     if let Some(param_list) = node.param_list() {
-- 
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