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+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+*******************************************************************************
+*
+* Copyright (C) 2004-2007, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+*******************************************************************************
+* file name: uset_imp.h
+* encoding: US-ASCII
+* tab size: 8 (not used)
+* indentation:4
+*
+* created on: 2004sep07
+* created by: Markus W. Scherer
+*
+* Internal USet definitions.
+*/
+
+#ifndef __USET_IMP_H__
+#define __USET_IMP_H__
+
+#include "unicode/utypes.h"
+#include "unicode/uset.h"
+
+U_CDECL_BEGIN
+
+typedef void U_CALLCONV
+USetAdd(USet *set, UChar32 c);
+
+typedef void U_CALLCONV
+USetAddRange(USet *set, UChar32 start, UChar32 end);
+
+typedef void U_CALLCONV
+USetAddString(USet *set, const UChar *str, int32_t length);
+
+typedef void U_CALLCONV
+USetRemove(USet *set, UChar32 c);
+
+typedef void U_CALLCONV
+USetRemoveRange(USet *set, UChar32 start, UChar32 end);
+
+/**
+ * Interface for adding items to a USet, to keep low-level code from
+ * statically depending on the USet implementation.
+ * Calls will look like sa->add(sa->set, c);
+ */
+struct USetAdder {
+ USet *set;
+ USetAdd *add;
+ USetAddRange *addRange;
+ USetAddString *addString;
+ USetRemove *remove;
+ USetRemoveRange *removeRange;
+};
+typedef struct USetAdder USetAdder;
+
+U_CDECL_END
+
+#endif
+