From 9863b9161d8d702848516be70c5c8161b7f382e8 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sat, 11 Aug 2018 00:55:32 +0300
Subject: decorations

---
 crates/server/Cargo.toml      |  1 +
 crates/server/src/handlers.rs | 14 +++++++++++++-
 crates/server/src/main.rs     | 21 ++++++++++++++++-----
 crates/server/src/req.rs      | 24 ++++++++++++++++++++++++
 4 files changed, 54 insertions(+), 6 deletions(-)

(limited to 'crates/server')

diff --git a/crates/server/Cargo.toml b/crates/server/Cargo.toml
index b2a7ce5b4..b5e4e1926 100644
--- a/crates/server/Cargo.toml
+++ b/crates/server/Cargo.toml
@@ -15,6 +15,7 @@ threadpool = "1.7.1"
 flexi_logger = "0.9.0"
 log = "0.4.3"
 url = "1.1.0"
+url_serde = "0.2.0"
 
 libeditor = { path = "../libeditor" }
 libanalysis = { path = "../libanalysis" }
diff --git a/crates/server/src/handlers.rs b/crates/server/src/handlers.rs
index de1fd557d..8b7e00c92 100644
--- a/crates/server/src/handlers.rs
+++ b/crates/server/src/handlers.rs
@@ -4,7 +4,7 @@ use libanalysis::World;
 use libeditor::{self, LineIndex, LineCol, TextRange, TextUnit};
 
 use ::{
-    req, Result,
+    req::{self, Decoration}, Result,
     util::FilePath,
 };
 
@@ -51,6 +51,18 @@ pub fn publish_diagnostics(world: World, uri: Url) -> Result<req::PublishDiagnos
     Ok(req::PublishDiagnosticsParams { uri, diagnostics })
 }
 
+pub fn publish_decorations(world: World, uri: Url) -> Result<req::PublishDecorationsParams> {
+    let path = uri.file_path()?;
+    let file = world.file_syntax(&path)?;
+    let line_index = world.file_line_index(&path)?;
+    let decorations = libeditor::highlight(&file)
+        .into_iter()
+        .map(|h| Decoration {
+            range: to_vs_range(&line_index, h.range),
+            tag: h.tag,
+        }).collect();
+    Ok(req::PublishDecorationsParams { uri, decorations })
+}
 
 fn to_text_range(line_index: &LineIndex, range: Range) -> TextRange {
     TextRange::from_to(
diff --git a/crates/server/src/main.rs b/crates/server/src/main.rs
index 0e4f5f86a..900ee555f 100644
--- a/crates/server/src/main.rs
+++ b/crates/server/src/main.rs
@@ -12,6 +12,7 @@ extern crate threadpool;
 #[macro_use]
 extern crate log;
 extern crate url;
+extern crate url_serde;
 extern crate flexi_logger;
 extern crate libeditor;
 extern crate libanalysis;
@@ -31,7 +32,7 @@ use libanalysis::{WorldState, World};
 
 use ::{
     io::{Io, RawMsg, RawRequest},
-    handlers::{handle_syntax_tree, handle_extend_selection, publish_diagnostics},
+    handlers::{handle_syntax_tree, handle_extend_selection, publish_diagnostics, publish_decorations},
     util::{FilePath, FnBox}
 };
 
@@ -198,7 +199,7 @@ fn main_loop(
                 dispatch::handle_notification::<req::DidOpenTextDocument, _>(&mut not, |params| {
                     let path = params.text_document.file_path()?;
                     world.change_overlay(path, Some(params.text_document.text));
-                    update_diagnostics_on_threadpool(
+                    update_file_notifications_on_threadpool(
                         pool, world.snapshot(), sender.clone(), params.text_document.uri,
                     );
                     Ok(())
@@ -209,7 +210,7 @@ fn main_loop(
                         .ok_or_else(|| format_err!("empty changes"))?
                         .text;
                     world.change_overlay(path, Some(text));
-                    update_diagnostics_on_threadpool(
+                    update_file_notifications_on_threadpool(
                         pool, world.snapshot(), sender.clone(), params.text_document.uri,
                     );
                     Ok(())
@@ -254,14 +255,14 @@ fn handle_request_on_threadpool<R: req::ClientRequest>(
     })
 }
 
-fn update_diagnostics_on_threadpool(
+fn update_file_notifications_on_threadpool(
     pool: &ThreadPool,
     world: World,
     sender: Sender<Thunk>,
     uri: Url,
 ) {
     pool.execute(move || {
-        match publish_diagnostics(world, uri) {
+        match publish_diagnostics(world.clone(), uri.clone()) {
             Err(e) => {
                 error!("failed to compute diagnostics: {:?}", e)
             }
@@ -271,5 +272,15 @@ fn update_diagnostics_on_threadpool(
                 }))
             }
         }
+        match publish_decorations(world, uri) {
+            Err(e) => {
+                error!("failed to compute decortions: {:?}", e)
+            }
+            Ok(params) => {
+                sender.send(Box::new(|io: &mut Io| {
+                    dispatch::send_notification::<req::PublishDecorations>(io, params)
+                }))
+            }
+        }
     });
 }
diff --git a/crates/server/src/req.rs b/crates/server/src/req.rs
index 645a17306..480fbabcd 100644
--- a/crates/server/src/req.rs
+++ b/crates/server/src/req.rs
@@ -1,5 +1,7 @@
 use serde::{ser::Serialize, de::DeserializeOwned};
+use url::Url;
 use languageserver_types::{TextDocumentIdentifier, Range};
+use url_serde;
 
 pub use languageserver_types::{
     request::*, notification::*,
@@ -58,3 +60,25 @@ pub struct ExtendSelectionParams {
 pub struct ExtendSelectionResult {
     pub selections: Vec<Range>,
 }
+
+pub enum PublishDecorations {}
+
+impl Notification for PublishDecorations {
+    type Params = PublishDecorationsParams;
+    const METHOD: &'static str = "m/publishDecorations";
+}
+
+#[derive(Serialize, Debug)]
+#[serde(rename_all = "camelCase")]
+pub struct PublishDecorationsParams {
+    #[serde(with = "url_serde")]
+    pub uri: Url,
+    pub decorations: Vec<Decoration>,
+}
+
+#[derive(Serialize, Debug)]
+#[serde(rename_all = "camelCase")]
+pub struct Decoration {
+    pub range: Range,
+    pub tag: &'static str
+}
-- 
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