From 91d84e11c8ebc0aa87b9ee82d86adb928f697485 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Wed, 13 Jan 2021 11:39:30 +0000
Subject: [PATCH] Bug 1551040 - Add const versions of Document casts. r=edgar

Depends on D101516

Differential Revision: https://phabricator.services.mozilla.com/D101517
---
 dom/base/Document.h       | 2 ++
 dom/html/nsHTMLDocument.h | 5 +++++
 dom/svg/SVGDocument.h     | 5 +++++
 3 files changed, 12 insertions(+)

diff --git a/dom/base/Document.h b/dom/base/Document.h
index e017b9eadeb9..cc8b83ad4a43 100644
--- a/dom/base/Document.h
+++ b/dom/base/Document.h
@@ -3556,12 +3556,14 @@ class Document : public nsINode,
    * Defined inline in nsHTMLDocument.h
    */
   inline nsHTMLDocument* AsHTMLDocument();
+  inline const nsHTMLDocument* AsHTMLDocument() const;
 
   /**
    * Asserts IsSVGDocument, and can't return null.
    * Defined inline in SVGDocument.h
    */
   inline SVGDocument* AsSVGDocument();
+  inline const SVGDocument* AsSVGDocument() const;
 
   /*
    * Given a node, get a weak reference to it and append that reference to
diff --git a/dom/html/nsHTMLDocument.h b/dom/html/nsHTMLDocument.h
index 91d783531bf9..6c0471dbc8c8 100644
--- a/dom/html/nsHTMLDocument.h
+++ b/dom/html/nsHTMLDocument.h
@@ -202,6 +202,11 @@ inline nsHTMLDocument* Document::AsHTMLDocument() {
   return static_cast<nsHTMLDocument*>(this);
 }
 
+inline const nsHTMLDocument* Document::AsHTMLDocument() const {
+  MOZ_ASSERT(IsHTMLOrXHTML());
+  return static_cast<const nsHTMLDocument*>(this);
+}
+
 }  // namespace dom
 }  // namespace mozilla
 
diff --git a/dom/svg/SVGDocument.h b/dom/svg/SVGDocument.h
index 44d74356cef5..86c7ed01753e 100644
--- a/dom/svg/SVGDocument.h
+++ b/dom/svg/SVGDocument.h
@@ -43,6 +43,11 @@ inline SVGDocument* Document::AsSVGDocument() {
   return static_cast<SVGDocument*>(this);
 }
 
+inline const SVGDocument* Document::AsSVGDocument() const {
+  MOZ_ASSERT(IsSVGDocument());
+  return static_cast<const SVGDocument*>(this);
+}
+
 }  // namespace dom
 }  // namespace mozilla