1 files changed, 26 insertions, 0 deletions
diff --git a/intl/unicharutil/util/nsSpecialCasingData.h b/intl/unicharutil/util/nsSpecialCasingData.h
new file mode 100644
index 0000000000..b0ba4d7dcc
--- /dev/null
+++ b/intl/unicharutil/util/nsSpecialCasingData.h
@@ -0,0 +1,26 @@
+/* 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 <stdint.h>
+
+namespace mozilla {
+namespace unicode {
+
+// Multi-character mappings (from SpecialCasing.txt) map a single Unicode
+// value to a sequence of 2 or 3 Unicode characters. There are currently none
+// defined outside the BMP, so we can use char16_t here. Unused trailing
+// positions in mMappedChars are set to 0.
+struct MultiCharMapping {
+  char16_t mOriginalChar;
+  char16_t mMappedChars[3];
+};
+
+// Return a pointer to the special case mapping for the given character;
+// returns nullptr if no such mapping is defined.
+const MultiCharMapping* SpecialUpper(uint32_t aCh);
+const MultiCharMapping* SpecialLower(uint32_t aCh);
+const MultiCharMapping* SpecialTitle(uint32_t aCh);
+
+}  // namespace unicode
+}  // namespace mozilla