From 6a0cca7178b303e7d50237d31818bc933ca7cda4 Mon Sep 17 00:00:00 2001
From: Antonio Scandurra <me@as-cii.com>
Date: Fri, 25 Feb 2022 10:58:45 +0100
Subject: [PATCH] Add a fast path for when the search query is empty

---
 crates/project/src/search.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/crates/project/src/search.rs b/crates/project/src/search.rs
index 688374b8bb1d6c1b3b3e6aea1072466a7e8301f8..dd2699238dcfc4866f8be3bb2d60494e84776bdc 100644
--- a/crates/project/src/search.rs
+++ b/crates/project/src/search.rs
@@ -55,6 +55,10 @@ impl SearchQuery {
     }
 
     pub fn detect<T: Read>(&self, stream: T) -> Result<bool> {
+        if self.as_str().is_empty() {
+            return Ok(false);
+        }
+
         match self {
             SearchQuery::Text { search, .. } => {
                 let mat = search.stream_find_iter(stream).next();
@@ -89,6 +93,10 @@ impl SearchQuery {
     pub async fn search(&self, rope: &Rope) -> Vec<Range<usize>> {
         const YIELD_INTERVAL: usize = 20000;
 
+        if self.as_str().is_empty() {
+            return Default::default();
+        }
+
         let mut matches = Vec::new();
         match self {
             SearchQuery::Text {
@@ -152,4 +160,11 @@ impl SearchQuery {
         }
         matches
     }
+
+    fn as_str(&self) -> &str {
+        match self {
+            SearchQuery::Text { query, .. } => query.as_str(),
+            SearchQuery::Regex { regex, .. } => regex.as_str(),
+        }
+    }
 }