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+/*
+*******************************************************************************
+*
+* Copyright (C) 1998-2014, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+*******************************************************************************
+*
+* Private implementation header for C collation
+* file name: ucol_imp.h
+* encoding: US-ASCII
+* tab size: 8 (not used)
+* indentation:4
+*
+* created on: 2000dec11
+* created by: Vladimir Weinstein
+*
+* Modification history
+* Date Name Comments
+* 02/16/2001 synwee Added UCOL_GETPREVCE for the use in ucoleitr
+* 02/27/2001 synwee Added getMaxExpansion data structure in UCollator
+* 03/02/2001 synwee Added UCOL_IMPLICIT_CE
+* 03/12/2001 synwee Added pointer start to collIterate.
+*/
+
+#ifndef UCOL_IMP_H
+#define UCOL_IMP_H
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_COLLATION
+
+// This part needs to compile as plain C code, for cintltst.
+
+#include "unicode/ucol.h"
+
+/** Check whether two collators are equal. Collators are considered equal if they
+ * will sort strings the same. This means that both the current attributes and the
+ * rules must be equivalent.
+ * @param source first collator
+ * @param target second collator
+ * @return TRUE or FALSE
+ * @internal ICU 3.0
+ */
+U_INTERNAL UBool U_EXPORT2
+ucol_equals(const UCollator *source, const UCollator *target);
+
+/**
+ * Convenience string denoting the Collation data tree
+ */
+#define U_ICUDATA_COLL U_ICUDATA_NAME U_TREE_SEPARATOR_STRING "coll"
+
+#ifdef __cplusplus
+
+#include "unicode/locid.h"
+#include "unicode/ures.h"
+
+U_NAMESPACE_BEGIN
+
+struct CollationCacheEntry;
+
+class Locale;
+class UnicodeString;
+class UnifiedCache;
+
+/** Implemented in ucol_res.cpp. */
+class CollationLoader {
+public:
+ static void appendRootRules(UnicodeString &s);
+ static void loadRules(const char *localeID, const char *collationType,
+ UnicodeString &rules, UErrorCode &errorCode);
+ // Adds a reference to returned value.
+ static const CollationCacheEntry *loadTailoring(const Locale &locale, UErrorCode &errorCode);
+
+ // Cache callback. Adds a reference to returned value.
+ const CollationCacheEntry *createCacheEntry(UErrorCode &errorCode);
+
+private:
+ static void loadRootRules(UErrorCode &errorCode);
+
+ // The following members are used by loadTailoring()
+ // and the cache callback.
+ static const uint32_t TRIED_SEARCH = 1;
+ static const uint32_t TRIED_DEFAULT = 2;
+ static const uint32_t TRIED_STANDARD = 4;
+
+ CollationLoader(const CollationCacheEntry *re, const Locale &requested, UErrorCode &errorCode);
+ ~CollationLoader();
+
+ // All loadFromXXX methods add a reference to the returned value.
+ const CollationCacheEntry *loadFromLocale(UErrorCode &errorCode);
+ const CollationCacheEntry *loadFromBundle(UErrorCode &errorCode);
+ const CollationCacheEntry *loadFromCollations(UErrorCode &errorCode);
+ const CollationCacheEntry *loadFromData(UErrorCode &errorCode);
+
+ // Adds a reference to returned value.
+ const CollationCacheEntry *getCacheEntry(UErrorCode &errorCode);
+
+ /**
+ * Returns the rootEntry (with one addRef()) if loc==root,
+ * or else returns a new cache entry with ref count 1 for the loc and
+ * the root tailoring.
+ */
+ const CollationCacheEntry *makeCacheEntryFromRoot(
+ const Locale &loc, UErrorCode &errorCode) const;
+
+ /**
+ * Returns the entryFromCache as is if loc==validLocale,
+ * or else returns a new cache entry with ref count 1 for the loc and
+ * the same tailoring. In the latter case, a ref count is removed from
+ * entryFromCache.
+ */
+ static const CollationCacheEntry *makeCacheEntry(
+ const Locale &loc,
+ const CollationCacheEntry *entryFromCache,
+ UErrorCode &errorCode);
+
+ const UnifiedCache *cache;
+ const CollationCacheEntry *rootEntry;
+ Locale validLocale;
+ Locale locale;
+ char type[16];
+ char defaultType[16];
+ uint32_t typesTried;
+ UBool typeFallback;
+ UResourceBundle *bundle;
+ UResourceBundle *collations;
+ UResourceBundle *data;
+};
+
+U_NAMESPACE_END
+
+#endif /* __cplusplus */
+
+#endif /* #if !UCONFIG_NO_COLLATION */
+
+#endif