Check in the pristine copy of ICU 4.6...

icu46/source/i18n/funcrepl.h

+/*
+**********************************************************************
+*   Copyright (c) 2002-2007, International Business Machines Corporation
+*   and others.  All Rights Reserved.
+**********************************************************************
+*   Date        Name        Description
+*   02/04/2002  aliu        Creation.
+**********************************************************************
+*/
+
+#ifndef FUNCREPL_H
+#define FUNCREPL_H
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_TRANSLITERATION
+
+#include "unicode/unifunct.h"
+#include "unicode/unirepl.h"
+
+U_NAMESPACE_BEGIN
+
+class Transliterator;
+
+/**
+ * A replacer that calls a transliterator to generate its output text.
+ * The input text to the transliterator is the output of another
+ * UnicodeReplacer object.  That is, this replacer wraps another
+ * replacer with a transliterator.
+ *
+ * @author Alan Liu
+ */
+class FunctionReplacer : public UnicodeFunctor, public UnicodeReplacer {
+
+ private:
+
+    /**
+     * The transliterator.  Must not be null.  OWNED.
+     */
+    Transliterator* translit;
+
+    /**
+     * The replacer object.  This generates text that is then
+     * processed by 'translit'.  Must not be null.  OWNED.
+     */
+    UnicodeFunctor* replacer;
+
+ public:
+
+    /**
+     * Construct a replacer that takes the output of the given
+     * replacer, passes it through the given transliterator, and emits
+     * the result as output.
+     */
+    FunctionReplacer(Transliterator* adoptedTranslit,
+                     UnicodeFunctor* adoptedReplacer);
+
+    /**
+     * Copy constructor.
+     */
+    FunctionReplacer(const FunctionReplacer& other);
+
+    /**
+     * Destructor
+     */
+    virtual ~FunctionReplacer();
+
+    /**
+     * Implement UnicodeFunctor
+     */
+    virtual UnicodeFunctor* clone() const;
+
+    /**
+     * UnicodeFunctor API.  Cast 'this' to a UnicodeReplacer* pointer
+     * and return the pointer.
+     */
+    virtual UnicodeReplacer* toReplacer() const;
+
+    /**
+     * UnicodeReplacer API
+     */
+    virtual int32_t replace(Replaceable& text,
+                            int32_t start,
+                            int32_t limit,
+                            int32_t& cursor);
+
+    /**
+     * UnicodeReplacer API
+     */
+    virtual UnicodeString& toReplacerPattern(UnicodeString& rule,
+                                             UBool escapeUnprintable) const;
+
+    /**
+     * Implement UnicodeReplacer
+     */
+    virtual void addReplacementSetTo(UnicodeSet& toUnionTo) const;
+
+    /**
+     * UnicodeFunctor API
+     */
+    virtual void setData(const TransliterationRuleData*);
+
+    /**
+     * ICU "poor man's RTTI", returns a UClassID for the actual class.
+     *
+     * @draft ICU 2.2
+     */
+    virtual UClassID getDynamicClassID() const;
+
+    /**
+     * ICU "poor man's RTTI", returns a UClassID for this class.
+     *
+     * @draft ICU 2.2
+     */
+    static UClassID U_EXPORT2 getStaticClassID();
+};
+
+U_NAMESPACE_END
+
+#endif /* #if !UCONFIG_NO_TRANSLITERATION */
+#endif
+
+//eof