1 files changed, 48 insertions, 0 deletions
diff --git a/third_party/image_io/includes/image_io/xml/xml_portion.h b/third_party/image_io/includes/image_io/xml/xml_portion.h
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--- /dev/null
+++ b/third_party/image_io/includes/image_io/xml/xml_portion.h
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+#ifndef IMAGE_IO_XML_XML_PORTION_H_  // NOLINT
+#define IMAGE_IO_XML_XML_PORTION_H_  // NOLINT
+
+namespace photos_editing_formats {
+namespace image_io {
+
+/// An bit-type enum for indicating what part of an entity is defined: the
+/// begin, middle and or end. Bitwise "and" and "or" operators are defined to
+/// combine and test values.
+enum class XmlPortion {
+  kNone = 0,
+  kBegin = 1,
+  kMiddle = 2,
+  kEnd = 4,
+};
+
+/// @return The value that results from the bitwise "and" of given portions.
+inline XmlPortion operator&(XmlPortion lhs, XmlPortion rhs) {
+  int lhs_value = static_cast<int>(lhs);
+  int rhs_value = static_cast<int>(rhs);
+  return static_cast<XmlPortion>(lhs_value & rhs_value);
+}
+
+/// @return The value that results from the bitwise "or"  of given portions.
+inline XmlPortion operator|(XmlPortion lhs, XmlPortion rhs) {
+  int lhs_value = static_cast<int>(lhs);
+  int rhs_value = static_cast<int>(rhs);
+  return static_cast<XmlPortion>(lhs_value | rhs_value);
+}
+
+/// @param value The value to use for the test.
+/// @param mask The mask to use for the test.
+/// @return Whether any of the bits in the mask are set in the value.
+inline bool ContainsAny(XmlPortion value, XmlPortion mask) {
+  return (value & mask) != XmlPortion::kNone;
+}
+
+/// @param value The value to use for the test.
+/// @param mask The mask to use for the test.
+/// @return Whether all of the bits in the mask are set in the value.
+inline bool ContainsAll(XmlPortion value, XmlPortion mask) {
+  return (value & mask) == mask;
+}
+
+}  // namespace image_io
+}  // namespace photos_editing_formats
+
+#endif // IMAGE_IO_XML_XML_PORTION_H_  // NOLINT