Check in the pristine copy of ICU 51.2

icu51/source/common/uelement.h

Index: icu51/source/common/uelement.h
===================================================================
--- icu51/source/common/uelement.h	(revision 0)
+++ icu51/source/common/uelement.h	(revision 0)
@@ -0,0 +1,89 @@
+/*
+*******************************************************************************
+*   Copyright (C) 1997-2011, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+*******************************************************************************
+*   file name:  uelement.h
+*   encoding:   US-ASCII
+*   tab size:   8 (not used)
+*   indentation:4
+*
+*   created on: 2011jul04
+*   created by: Markus W. Scherer
+*
+*   Common definitions for UHashTable and UVector.
+*   UHashTok moved here from uhash.h and renamed UElement.
+*   This allows users of UVector to avoid the confusing #include of uhash.h.
+*   uhash.h aliases UElement to UHashTok,
+*   so that we need not change all of its code and its users.
+*/
+
+#ifndef __UELEMENT_H__
+#define __UELEMENT_H__
+
+#include "unicode/utypes.h"
+
+U_CDECL_BEGIN
+
+/**
+ * A UVector element, or a key or value within a UHashtable.
+ * It may be either a 32-bit integral value or an opaque void* pointer.
+ * The void* pointer may be smaller than 32 bits (e.g. 24 bits)
+ * or may be larger (e.g. 64 bits).
+ *
+ * Because a UElement is the size of a native pointer or a 32-bit
+ * integer, we pass it around by value.
+ */
+union UElement {
+    void*   pointer;
+    int32_t integer;
+};
+typedef union UElement UElement;
+
+/**
+ * An element-equality (boolean) comparison function.
+ * @param e1 An element (object or integer)
+ * @param e2 An element (object or integer)
+ * @return TRUE if the two elements are equal.
+ */
+typedef UBool U_CALLCONV UElementsAreEqual(const UElement e1, const UElement e2);
+
+/**
+ * An element sorting (three-way) comparison function.
+ * @param e1 An element (object or integer)
+ * @param e2 An element (object or integer)
+ * @return 0 if the two elements are equal, -1 if e1 is < e2, or +1 if e1 is > e2.
+ */
+typedef int8_t U_CALLCONV UElementComparator(UElement e1, UElement e2);
+
+/**
+ * An element assignment function.  It may copy an integer, copy
+ * a pointer, or clone a pointer, as appropriate.
+ * @param dst The element to be assigned to
+ * @param src The element to assign from
+ */
+typedef void U_CALLCONV UElementAssigner(UElement *dst, UElement *src);
+
+U_CDECL_END
+
+/**
+ * Comparator function for UnicodeString* keys. Implements UElementsAreEqual.
+ * @param key1 The string for comparison
+ * @param key2 The string for comparison
+ * @return true if key1 and key2 are equal, return false otherwise.
+ */
+U_CAPI UBool U_EXPORT2 
+uhash_compareUnicodeString(const UElement key1, const UElement key2);
+
+/**
+ * Comparator function for UnicodeString* keys (case insensitive).
+ * Make sure to use together with uhash_hashCaselessUnicodeString.
+ * Implements UElementsAreEqual.
+ * @param key1 The string for comparison
+ * @param key2 The string for comparison
+ * @return true if key1 and key2 are equal, return false otherwise.
+ */
+U_CAPI UBool U_EXPORT2 
+uhash_compareCaselessUnicodeString(const UElement key1, const UElement key2);
+
+#endif  /* __UELEMENT_H__ */
Property changes on: icu51/source/common/uelement.h
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Added: svn:eol-style
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