1 files changed, 109 insertions, 0 deletions
diff --git a/parser/html/nsHtml5Portability.cpp b/parser/html/nsHtml5Portability.cpp
new file mode 100644
index 0000000000..e947c9e257
--- /dev/null
+++ b/parser/html/nsHtml5Portability.cpp
@@ -0,0 +1,109 @@
+/* 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 "nsHtml5Portability.h"
+#include "jArray.h"
+#include "nsAtom.h"
+#include "nsHtml5TreeBuilder.h"
+#include "nsString.h"
+#include "mozilla/CheckedInt.h"
+
+int32_t nsHtml5Portability::checkedAdd(int32_t a, int32_t b) {
+  mozilla::CheckedInt<int32_t> sum(a);
+  sum += b;
+  MOZ_RELEASE_ASSERT(sum.isValid(),
+                     "HTML input too large for signed 32-bit integer.");
+  return sum.value();
+}
+
+nsAtom* nsHtml5Portability::newLocalNameFromBuffer(char16_t* buf,
+                                                   int32_t length,
+                                                   nsHtml5AtomTable* interner) {
+  NS_ASSERTION(interner, "Didn't get an atom service.");
+  return interner->GetAtom(nsDependentSubstring(buf, buf + length));
+}
+
+static bool ContainsWhiteSpace(mozilla::Span<char16_t> aSpan) {
+  for (char16_t c : aSpan) {
+    if (nsContentUtils::IsHTMLWhitespace(c)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+nsHtml5String nsHtml5Portability::newStringFromBuffer(
+    char16_t* buf, int32_t offset, int32_t length,
+    nsHtml5TreeBuilder* treeBuilder, bool maybeAtomize) {
+  if (!length) {
+    return nsHtml5String::EmptyString();
+  }
+  if (maybeAtomize &&
+      !ContainsWhiteSpace(mozilla::Span(buf + offset, length))) {
+    return nsHtml5String::FromAtom(
+        NS_AtomizeMainThread(nsDependentSubstring(buf + offset, length)));
+  }
+  return nsHtml5String::FromBuffer(buf + offset, length, treeBuilder);
+}
+
+nsHtml5String nsHtml5Portability::newEmptyString() {
+  return nsHtml5String::EmptyString();
+}
+
+nsHtml5String nsHtml5Portability::newStringFromLiteral(const char* literal) {
+  return nsHtml5String::FromLiteral(literal);
+}
+
+nsHtml5String nsHtml5Portability::newStringFromString(nsHtml5String string) {
+  return string.Clone();
+}
+
+jArray<char16_t, int32_t> nsHtml5Portability::newCharArrayFromLocal(
+    nsAtom* local) {
+  nsAutoString temp;
+  local->ToString(temp);
+  int32_t len = temp.Length();
+  jArray<char16_t, int32_t> arr = jArray<char16_t, int32_t>::newJArray(len);
+  memcpy(arr, temp.BeginReading(), len * sizeof(char16_t));
+  return arr;
+}
+
+jArray<char16_t, int32_t> nsHtml5Portability::newCharArrayFromString(
+    nsHtml5String string) {
+  MOZ_RELEASE_ASSERT(string);
+  uint32_t len = string.Length();
+  MOZ_RELEASE_ASSERT(len < INT32_MAX);
+  jArray<char16_t, int32_t> arr = jArray<char16_t, int32_t>::newJArray(len);
+  string.CopyToBuffer(arr);
+  return arr;
+}
+
+bool nsHtml5Portability::localEqualsBuffer(nsAtom* local, char16_t* buf,
+                                           int32_t length) {
+  return local->Equals(buf, length);
+}
+
+bool nsHtml5Portability::lowerCaseLiteralIsPrefixOfIgnoreAsciiCaseString(
+    const char* lowerCaseLiteral, nsHtml5String string) {
+  return string.LowerCaseStartsWithASCII(lowerCaseLiteral);
+}
+
+bool nsHtml5Portability::lowerCaseLiteralEqualsIgnoreAsciiCaseString(
+    const char* lowerCaseLiteral, nsHtml5String string) {
+  return string.LowerCaseEqualsASCII(lowerCaseLiteral);
+}
+
+bool nsHtml5Portability::literalEqualsString(const char* literal,
+                                             nsHtml5String string) {
+  return string.EqualsASCII(literal);
+}
+
+bool nsHtml5Portability::stringEqualsString(nsHtml5String one,
+                                            nsHtml5String other) {
+  return one.Equals(other);
+}
+
+void nsHtml5Portability::initializeStatics() {}
+
+void nsHtml5Portability::releaseStatics() {}