Check in the pristine copy of ICU 4.6...

icu46/source/common/uhash_us.cpp

+/*
+******************************************************************************
+*   Copyright (C) 1997-2010, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+******************************************************************************
+*   Date        Name        Description
+*   03/22/00    aliu        Creation.
+*   07/06/01    aliu        Modified to support int32_t keys on
+*                           platforms with sizeof(void*) < 32.
+******************************************************************************
+*/
+
+#include "uhash.h"
+#include "hash.h"
+#include "uvector.h"
+#include "unicode/unistr.h"
+#include "unicode/uchar.h"
+
+/********************************************************************
+ * PUBLIC UnicodeString support functions for UHashtable
+ ********************************************************************/
+
+U_CAPI int32_t U_EXPORT2
+uhash_hashUnicodeString(const UHashTok key) {
+    U_NAMESPACE_USE
+    const UnicodeString *str = (const UnicodeString*) key.pointer;
+    return (str == NULL) ? 0 : str->hashCode();
+}
+
+U_CAPI void U_EXPORT2
+uhash_deleteUnicodeString(void *obj) {
+    U_NAMESPACE_USE
+    delete (UnicodeString*) obj;
+}
+
+U_CAPI UBool U_EXPORT2
+uhash_compareUnicodeString(const UHashTok key1, const UHashTok key2) {
+    U_NAMESPACE_USE
+    const UnicodeString *str1 = (const UnicodeString*) key1.pointer;
+    const UnicodeString *str2 = (const UnicodeString*) key2.pointer;
+    if (str1 == str2) {
+        return TRUE;
+    }
+    if (str1 == NULL || str2 == NULL) {
+        return FALSE;
+    }
+    return *str1 == *str2;
+}
+
+/**
+ * Deleter for Hashtable objects.
+ */
+U_CAPI void U_EXPORT2
+uhash_deleteHashtable(void *obj) {
+    U_NAMESPACE_USE
+    delete (Hashtable*) obj;
+}
+
+/**
+ * Deleter for UObject instances.
+ */
+U_CAPI void U_EXPORT2
+uhash_deleteUObject(void *obj) {
+    U_NAMESPACE_USE
+    delete (UObject*) obj;
+}
+
+//eof