1 files changed, 47 insertions, 0 deletions
diff --git a/gfx/thebes/gfxFontFeatures.cpp b/gfx/thebes/gfxFontFeatures.cpp
new file mode 100644
index 0000000000..4d1d82927a
--- /dev/null
+++ b/gfx/thebes/gfxFontFeatures.cpp
@@ -0,0 +1,47 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * 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 "gfxFontFeatures.h"
+#include "nsAtom.h"
+#include "nsUnicharUtils.h"
+#include "nsHashKeys.h"
+
+using namespace mozilla;
+
+gfxFontFeatureValueSet::gfxFontFeatureValueSet() : mFontFeatureValues(8) {}
+
+Span<const uint32_t> gfxFontFeatureValueSet::GetFontFeatureValuesFor(
+    const nsACString& aFamily, uint32_t aVariantProperty, nsAtom* aName) const {
+  nsAutoCString family(aFamily);
+  ToLowerCase(family);
+  FeatureValueHashKey key(family, aVariantProperty, aName);
+  FeatureValueHashEntry* entry = mFontFeatureValues.GetEntry(key);
+  if (!entry) {
+    return {};
+  }
+  NS_ASSERTION(entry->mValues.Length() > 0,
+               "null array of font feature values");
+  return {entry->mValues};
+}
+
+nsTArray<uint32_t>* gfxFontFeatureValueSet::AppendFeatureValueHashEntry(
+    const nsACString& aFamily, nsAtom* aName, uint32_t aAlternate) {
+  FeatureValueHashKey key(aFamily, aAlternate, aName);
+  FeatureValueHashEntry* entry = mFontFeatureValues.PutEntry(key);
+  entry->mKey = key;
+  return &entry->mValues;
+}
+
+bool gfxFontFeatureValueSet::FeatureValueHashEntry::KeyEquals(
+    const KeyTypePointer aKey) const {
+  return aKey->mPropVal == mKey.mPropVal && aKey->mName == mKey.mName &&
+         aKey->mFamily.Equals(mKey.mFamily);
+}
+
+PLDHashNumber gfxFontFeatureValueSet::FeatureValueHashEntry::HashKey(
+    const KeyTypePointer aKey) {
+  return HashString(aKey->mFamily) + aKey->mName->hash() +
+         aKey->mPropVal * uint32_t(0xdeadbeef);
+}