From 92692454dad649a8a12ab51c807e9618f8357a87 Mon Sep 17 00:00:00 2001
From: "Alexander \"Arav\" Andreev" <me@arav.su>
Date: Sat, 12 Aug 2023 19:37:51 +0400
Subject: [PATCH] Inversed logic of if else statement to reduce nesting by 1.

---
 httpr.go | 42 ++++++++++++++++++++++--------------------
 1 file changed, 22 insertions(+), 20 deletions(-)

diff --git a/httpr.go b/httpr.go
index 6a0163f..c201093 100644
--- a/httpr.go
+++ b/httpr.go
@@ -157,27 +157,29 @@ func New() *Router {
 }
 
 func (rr *Router) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	if tree, ok := rr.tree[r.Method]; ok {
-		path, err := newPath(r.URL.Path)
-		if err != nil {
-			http.Error(w, err.Error(), http.StatusNotAcceptable)
-			return
-		}
-
-		if handler, params := tree.get(path); handler != nil {
-			if params != nil {
-				r = r.WithContext(context.WithValue(r.Context(), ParamsKey, params))
-			}
-			handler(w, r)
-		} else {
-			if rr.NotFoundHandler != nil {
-				rr.NotFoundHandler(w, r)
-			} else {
-				http.Error(w, "Not Found", http.StatusNotFound)
-			}
-		}
-	} else {
+	tree, ok := rr.tree[r.Method]
+	if !ok {
 		http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed)
+		return
+	}
+
+	path, err := newPath(r.URL.Path)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusNotAcceptable)
+		return
+	}
+
+	if handler, params := tree.get(path); handler != nil {
+		if params != nil {
+			r = r.WithContext(context.WithValue(r.Context(), ParamsKey, params))
+		}
+		handler(w, r)
+	} else {
+		if rr.NotFoundHandler != nil {
+			rr.NotFoundHandler(w, r)
+		} else {
+			http.Error(w, "Not Found", http.StatusNotFound)
+		}
 	}
 }