From f7755363eefcb13fd7898add42ea2d491dfb3a18 Mon Sep 17 00:00:00 2001
From: Folyd <lyshuhow@gmail.com>
Date: Sun, 20 Dec 2020 00:27:14 +0800
Subject: [PATCH] Link source page's issue and since label

---
 extension/script/doc-rust-lang-org.css |  3 ++
 extension/script/doc-rust-lang-org.js  | 54 +++++++++++++++++++-------
 manifest.jsonnet                       |  8 +---
 3 files changed, 45 insertions(+), 20 deletions(-)
 create mode 100644 extension/script/doc-rust-lang-org.css

diff --git a/extension/script/doc-rust-lang-org.css b/extension/script/doc-rust-lang-org.css
new file mode 100644
index 0000000..345ebf3
--- /dev/null
+++ b/extension/script/doc-rust-lang-org.css
@@ -0,0 +1,3 @@
+.rse-link:hover {
+    text-decoration: underline;
+}
\ No newline at end of file
diff --git a/extension/script/doc-rust-lang-org.js b/extension/script/doc-rust-lang-org.js
index c952c6d..01fe42f 100644
--- a/extension/script/doc-rust-lang-org.js
+++ b/extension/script/doc-rust-lang-org.js
@@ -1,21 +1,23 @@
+const RUST_RELEASE_README_URL = "https://github.com/rust-lang/rust/blob/master/RELEASES.md";
 let target = location.pathname.includes("/nightly/") ? "nightly" : "stable";
 
 document.addEventListener("DOMContentLoaded", () => {
-    for (let span of document.querySelectorAll("span.since")) {
-        let version = span.textContent;
-        span.innerHTML = `<a href="https://github.com/rust-lang/rust/blob/master/RELEASES.md?version=${version}">
-                            ${version}
-                          </a>`;
-    }
+    if (["/src/", "/stable/src/", "/nightly/src/"].some(p => location.pathname.startsWith(p))) {
+        // Source code pages
+        linkSourcePageUrls();
+    } else {
+        // Docs page
+        linkDocPageSinceUrls();
 
-    let version = localStorage.getItem(`rust-search-extension:${target}`);
-    let now = new Date();
-    let today = new Date(now.getFullYear(), now.getMonth(), now.getDate(), 0, 0, 0)
-    if (version && today <= Date.parse(version)) {
-        // Check version between localStorage and today to ensure update search index once a day.
-        return;
+        let version = localStorage.getItem(`rust-search-extension:${target}`);
+        let now = new Date();
+        let today = new Date(now.getFullYear(), now.getMonth(), now.getDate(), 0, 0, 0)
+        if (version && today <= Date.parse(version)) {
+            // Check version between localStorage and today to ensure update search index once a day.
+            return;
+        }
+        injectScripts(["script/add-std-search-index.js"]);
     }
-    injectScripts(["script/add-std-search-index.js"]);
 });
 
 window.addEventListener("message", function (event) {
@@ -31,4 +33,28 @@ window.addEventListener("message", function (event) {
             }
         );
     }
-});
\ No newline at end of file
+});
+
+function linkDocPageSinceUrls() {
+    for (let span of document.querySelectorAll("span.since")) {
+        let version = span.textContent;
+        let href = `${RUST_RELEASE_README_URL}?version=${version}`;
+        span.innerHTML = `<a class="rse-link" href="${href}">${version}</a>`;
+    }
+}
+
+// Link issue and since urls in source pages.
+function linkSourcePageUrls() {
+    for (let span of document.querySelectorAll("span.attribute>span.string")) {
+        let text = span.textContent;
+        if (/^"[0-9]*"$/g.test(text)) {
+            // #[unstable(feature = "xxx", issue = "62358")]
+            let href = `https://github.com/rust-lang/rust/issues/${text.replace('"', '').trim()}`;
+            span.innerHTML = `<a class="rse-link" href="${href}">${text}</a>`;
+        } else if (/^"\d\.\d+\.?\d?"$/g.test(text)) {
+            // #[stable(feature = "xxx", since = "1.23.0")]
+            let href = `${RUST_RELEASE_README_URL}?version=${text.replace('"', '').trim()}`;
+            span.innerHTML = `<a class="rse-link" href="${href}">${text}</a>`;
+        }
+    }
+}
\ No newline at end of file
diff --git a/manifest.jsonnet b/manifest.jsonnet
index 1966d6c..2aba6e0 100644
--- a/manifest.jsonnet
+++ b/manifest.jsonnet
@@ -27,13 +27,9 @@ local json = manifest.new(
   css=['script/docs-rs.css'],
 )
              .addContentScript(
-  matches=['*://doc.rust-lang.org/nightly/std/*'],
+  matches=['*://doc.rust-lang.org/*'],
   js=utils.js_files('script', ['lib', 'doc-rust-lang-org']),
-  css=[],
-).addContentScript(
-  matches=['*://doc.rust-lang.org/std/*', '*://doc.rust-lang.org/stable/std/*'],
-  js=utils.js_files('script', ['lib', 'doc-rust-lang-org']),
-  css=[],
+  css=['script/doc-rust-lang-org.css'],
 ).addContentScript(
   matches=['*://rust.extension.sh/update', '*://extension.sh/update/'],
   js=utils.js_files('script', ['rust-extension-sh']),