From 8541aa880c50402489aa017fd79328714c8847d2 Mon Sep 17 00:00:00 2001
From: Razon Yang <razonyang@gmail.com>
Date: Fri, 14 Jun 2024 14:02:15 +0800
Subject: [PATCH] perf: calculate Index, HasPrev, HasNext for hooks in advance
 (#58)

perf: avoid using merge function to generate context for hooks
---
 layouts/partials/hugopress/functions/modules.html      | 10 +++++++++-
 layouts/partials/hugopress/functions/render-hooks.html |  8 +++-----
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/layouts/partials/hugopress/functions/modules.html b/layouts/partials/hugopress/functions/modules.html
index cb9c658..9d31ff5 100644
--- a/layouts/partials/hugopress/functions/modules.html
+++ b/layouts/partials/hugopress/functions/modules.html
@@ -8,6 +8,14 @@
       {{- $nonWeighted = $nonWeighted | append . }}
     {{- end }}
   {{- end }}
-  {{- $modules = $weighted | append $nonWeighted }}
+  {{- $total := len . }}
+  {{- range $i, $mod := $weighted | append $nonWeighted }}
+    {{- $mod = merge $mod (dict
+      "_index" $i
+      "_hasPrev" (ne $i 0)
+      "_hasNext" (lt $i (sub $total 1)))
+    }}
+    {{- $modules = $modules | append $mod }}
+  {{- end }}
 {{ end }}
 {{- return $modules }}
diff --git a/layouts/partials/hugopress/functions/render-hooks.html b/layouts/partials/hugopress/functions/render-hooks.html
index 2626149..9938e2b 100644
--- a/layouts/partials/hugopress/functions/render-hooks.html
+++ b/layouts/partials/hugopress/functions/render-hooks.html
@@ -1,15 +1,14 @@
 {{- $name := .Name }}
 {{- $page := .Page }}
 {{- $modules := partialCached "hugopress/functions/modules" $name $name }}
-{{- $idx := 0 }}
 {{- $total := len $modules }}
 {{- range $modules }}
   {{- $ctx := dict
-    "HasPrev" (ne $idx 0)
-    "HasNext" (lt $idx (sub $total 1))
-    "Index" $idx
     "Page" $page
     "Total" $total
+    "HasPrev" ._hasPrev
+    "HasNext" ._hasNext
+    "Index" ._index
   }}
   {{- if site.Params.hugopress.debug }}
     {{- warnf "[hugopress] [%s] rendering hook: %q." .module .name }}
@@ -27,5 +26,4 @@
   {{- else }}
     {{- partial .partial $ctx }}
   {{- end }}
-  {{- $idx = add $idx 1 }}
 {{- end }}