1 files changed, 102 insertions, 0 deletions
diff --git a/dom/script/nsIScriptElement.cpp b/dom/script/nsIScriptElement.cpp
new file mode 100644
index 0000000000..7fda6f1fd4
--- /dev/null
+++ b/dom/script/nsIScriptElement.cpp
@@ -0,0 +1,102 @@
+
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsIScriptElement.h"
+
+#include "js/loader/ScriptKind.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/ReferrerPolicyBinding.h"
+#include "nsIParser.h"
+#include "nsIWeakReference.h"
+
+using JS::loader::ScriptKind;
+
+bool nsIScriptElement::IsClassicNonAsyncDefer() {
+  return mKind == ScriptKind::eClassic && !mAsync && !mDefer;
+}
+
+void nsIScriptElement::SetCreatorParser(nsIParser* aParser) {
+  mCreatorParser = do_GetWeakReference(aParser);
+}
+
+void nsIScriptElement::UnblockParser() {
+  if (!IsClassicNonAsyncDefer()) {
+    MOZ_ASSERT_UNREACHABLE(
+        "Tried to unblock parser for a script type that cannot block "
+        "the parser.");
+    return;
+  }
+  nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
+  if (parser) {
+    parser->UnblockParser();
+  }
+}
+
+void nsIScriptElement::ContinueParserAsync() {
+  if (!IsClassicNonAsyncDefer()) {
+    MOZ_ASSERT_UNREACHABLE(
+        "Tried to continue after a script type that cannot block the parser.");
+    return;
+  }
+  nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
+  if (parser) {
+    parser->ContinueInterruptedParsingAsync();
+  }
+}
+
+void nsIScriptElement::BeginEvaluating() {
+  if (!IsClassicNonAsyncDefer()) {
+    return;
+  }
+  nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
+  if (parser) {
+    parser->IncrementScriptNestingLevel();
+  }
+}
+
+void nsIScriptElement::EndEvaluating() {
+  if (!IsClassicNonAsyncDefer()) {
+    return;
+  }
+  nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
+  if (parser) {
+    parser->DecrementScriptNestingLevel();
+  }
+}
+
+already_AddRefed<nsIParser> nsIScriptElement::GetCreatorParser() {
+  nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
+  return parser.forget();
+}
+
+mozilla::dom::ReferrerPolicy nsIScriptElement::GetReferrerPolicy() {
+  return mozilla::dom::ReferrerPolicy::_empty;
+}
+
+void nsIScriptElement::DetermineKindFromType(
+    const mozilla::dom::Document* aOwnerDoc) {
+  MOZ_ASSERT((mKind != ScriptKind::eModule) &&
+             (mKind != ScriptKind::eImportMap) && !mAsync && !mDefer &&
+             !mExternal);
+
+  nsAutoString type;
+  GetScriptType(type);
+
+  if (!type.IsEmpty()) {
+    if (type.LowerCaseEqualsASCII("module")) {
+      mKind = ScriptKind::eModule;
+    }
+
+    // https://html.spec.whatwg.org/multipage/scripting.html#prepare-the-script-element
+    // Step 11. Otherwise, if the script block's type string is an ASCII
+    // case-insensitive match for the string "importmap", then set el's type to
+    // "importmap".
+    if (type.LowerCaseEqualsASCII("importmap")) {
+      mKind = ScriptKind::eImportMap;
+    }
+  }
+}