Bug 1331322 - Allow tagging of pseudo-implementing native anonymous content with the pseudo type at creation time

* Stop using a node bit for HasExplicitBaseURI
* Move MAY_HAVE_CLASS to mBoolFlags
* Add a flag to indicate that a node is native anonymous content
* Allow tagging of pseudo-implementing native anonymous content with the pseudo type at creation time, and eliminate explicit style contexts in nsIAnonymousContentCreator::ContentInfo

Tag #1375

1 files changed, 20 insertions, 1 deletions

diff --git a/dom/base/Element.h b/dom/base/Element.h
index 1b29f0346..8139236aa 100644
--- a/dom/base/Element.h
+++ b/dom/base/Element.h
@@ -591,7 +591,7 @@ public:
    * guaranteed (e.g. we could have class="").
    */
   const nsAttrValue* GetClasses() const {
-    if (HasFlag(NODE_MAY_HAVE_CLASS)) {
+    if (MayHaveClass()) {
       return DoGetClasses();
     }
     return nullptr;
@@ -763,6 +763,25 @@ public:
   already_AddRefed<nsIHTMLCollection>
     GetElementsByClassName(const nsAString& aClassNames);
 
+  CSSPseudoElementType GetPseudoElementType() const {
+    if (!HasProperties()) {
+      return CSSPseudoElementType::NotPseudo;
+    }
+    nsresult rv = NS_OK;
+    auto raw = GetProperty(nsGkAtoms::pseudoProperty, &rv);
+    if (rv == NS_PROPTABLE_PROP_NOT_THERE) {
+      return CSSPseudoElementType::NotPseudo;
+    }
+    return CSSPseudoElementType(reinterpret_cast<uintptr_t>(raw));
+  }
+
+  void SetPseudoElementType(CSSPseudoElementType aPseudo) {
+    static_assert(sizeof(CSSPseudoElementType) <= sizeof(uintptr_t),
+                  "Need to be able to store this in a void*");
+    MOZ_ASSERT(aPseudo != CSSPseudoElementType::NotPseudo);
+    SetProperty(nsGkAtoms::pseudoProperty, reinterpret_cast<void*>(aPseudo));
+  }
+
 private:
   /**
    * Implement the algorithm specified at