Index: icu46/source/i18n/rbt_data.h |
=================================================================== |
--- icu46/source/i18n/rbt_data.h (revision 0) |
+++ icu46/source/i18n/rbt_data.h (revision 0) |
@@ -0,0 +1,152 @@ |
+/* |
+********************************************************************** |
+* Copyright (C) 1999-2007, International Business Machines Corporation |
+* and others. All Rights Reserved. |
+********************************************************************** |
+* Date Name Description |
+* 11/17/99 aliu Creation. |
+********************************************************************** |
+*/ |
+#ifndef RBT_DATA_H |
+#define RBT_DATA_H |
+ |
+#include "unicode/utypes.h" |
+#include "unicode/uclean.h" |
+ |
+#if !UCONFIG_NO_TRANSLITERATION |
+ |
+#include "unicode/uobject.h" |
+#include "rbt_set.h" |
+#include "hash.h" |
+ |
+U_NAMESPACE_BEGIN |
+ |
+class UnicodeFunctor; |
+class UnicodeMatcher; |
+class UnicodeReplacer; |
+ |
+/** |
+ * The rule data for a RuleBasedTransliterators. RBT objects hold |
+ * a const pointer to a TRD object that they do not own. TRD objects |
+ * are essentially the parsed rules in compact, usable form. The |
+ * TRD objects themselves are held for the life of the process in |
+ * a static cache owned by Transliterator. |
+ * |
+ * This class' API is a little asymmetric. There is a method to |
+ * define a variable, but no way to define a set. This is because the |
+ * sets are defined by the parser in a UVector, and the vector is |
+ * copied into a fixed-size array here. Once this is done, no new |
+ * sets may be defined. In practice, there is no need to do so, since |
+ * generating the data and using it are discrete phases. When there |
+ * is a need to access the set data during the parse phase, another |
+ * data structure handles this. See the parsing code for more |
+ * details. |
+ */ |
+class TransliterationRuleData : public UMemory { |
+ |
+public: |
+ |
+ // PUBLIC DATA MEMBERS |
+ |
+ /** |
+ * Rule table. May be empty. |
+ */ |
+ TransliterationRuleSet ruleSet; |
+ |
+ /** |
+ * Map variable name (String) to variable (UnicodeString). A variable name |
+ * corresponds to zero or more characters, stored in a UnicodeString in |
+ * this hash. One or more of these chars may also correspond to a |
+ * UnicodeMatcher, in which case the character in the UnicodeString in this hash is |
+ * a stand-in: it is an index for a secondary lookup in |
+ * data.variables. The stand-in also represents the UnicodeMatcher in |
+ * the stored rules. |
+ */ |
+ Hashtable variableNames; |
+ |
+ /** |
+ * Map category variable (UChar) to set (UnicodeFunctor). |
+ * Variables that correspond to a set of characters are mapped |
+ * from variable name to a stand-in character in data.variableNames. |
+ * The stand-in then serves as a key in this hash to lookup the |
+ * actual UnicodeFunctor object. In addition, the stand-in is |
+ * stored in the rule text to represent the set of characters. |
+ * variables[i] represents character (variablesBase + i). |
+ */ |
+ UnicodeFunctor** variables; |
+ |
+ /** |
+ * Flag that indicates whether the variables are owned (if a single |
+ * call to Transliterator::createFromRules() produces a CompoundTransliterator |
+ * with more than one RuleBasedTransliterator as children, they all share |
+ * the same variables list, so only the first one is considered to own |
+ * the variables) |
+ */ |
+ UBool variablesAreOwned; |
+ |
+ /** |
+ * The character that represents variables[0]. Characters |
+ * variablesBase through variablesBase + |
+ * variablesLength - 1 represent UnicodeFunctor objects. |
+ */ |
+ UChar variablesBase; |
+ |
+ /** |
+ * The length of variables. |
+ */ |
+ int32_t variablesLength; |
+ |
+public: |
+ |
+ /** |
+ * Constructor |
+ * @param status Output param set to success/failure code on exit. |
+ */ |
+ TransliterationRuleData(UErrorCode& status); |
+ |
+ /** |
+ * Copy Constructor |
+ */ |
+ TransliterationRuleData(const TransliterationRuleData&); |
+ |
+ /** |
+ * destructor |
+ */ |
+ ~TransliterationRuleData(); |
+ |
+ /** |
+ * Given a stand-in character, return the UnicodeFunctor that it |
+ * represents, or NULL if it doesn't represent anything. |
+ * @param standIn the given stand-in character. |
+ * @return the UnicodeFunctor that 'standIn' represents |
+ */ |
+ UnicodeFunctor* lookup(UChar32 standIn) const; |
+ |
+ /** |
+ * Given a stand-in character, return the UnicodeMatcher that it |
+ * represents, or NULL if it doesn't represent anything or if it |
+ * represents something that is not a matcher. |
+ * @param standIn the given stand-in character. |
+ * @return return the UnicodeMatcher that 'standIn' represents |
+ */ |
+ UnicodeMatcher* lookupMatcher(UChar32 standIn) const; |
+ |
+ /** |
+ * Given a stand-in character, return the UnicodeReplacer that it |
+ * represents, or NULL if it doesn't represent anything or if it |
+ * represents something that is not a replacer. |
+ * @param standIn the given stand-in character. |
+ * @return return the UnicodeReplacer that 'standIn' represents |
+ */ |
+ UnicodeReplacer* lookupReplacer(UChar32 standIn) const; |
+ |
+ |
+private: |
+ TransliterationRuleData &operator=(const TransliterationRuleData &other); // forbid copying of this class |
+}; |
+ |
+U_NAMESPACE_END |
+ |
+#endif /* #if !UCONFIG_NO_TRANSLITERATION */ |
+ |
+#endif |
Property changes on: icu46/source/i18n/rbt_data.h |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |