129 lines
3.9 KiB
C++
129 lines
3.9 KiB
C++
/*
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* Copyright (C) 2001, International Business Machines Corporation and others. All Rights Reserved.
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**********************************************************************
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* Date Name Description
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* 07/26/01 aliu Creation.
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**********************************************************************
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*/
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#ifndef QUANT_H
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#define QUANT_H
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#include "unicode/unifunct.h"
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#include "unicode/unimatch.h"
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U_NAMESPACE_BEGIN
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class Quantifier : public UnicodeFunctor, public UnicodeMatcher {
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public:
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enum { MAX = 0x7FFFFFFF };
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Quantifier(UnicodeFunctor *adoptedMatcher,
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uint32_t minCount, uint32_t maxCount);
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Quantifier(const Quantifier& o);
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virtual ~Quantifier();
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/**
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* UnicodeFunctor API. Cast 'this' to a UnicodeMatcher* pointer
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* and return the pointer.
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* @return the UnicodeMatcher pointer.
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*/
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virtual UnicodeMatcher* toMatcher() const;
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/**
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* Implement UnicodeFunctor
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* @return a copy of the object.
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*/
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virtual UnicodeFunctor* clone() const;
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/**
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* Implement UnicodeMatcher
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* @param text the text to be matched
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* @param offset on input, the index into text at which to begin
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* matching. On output, the limit of the matched text. The
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* number of matched characters is the output value of offset
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* minus the input value. Offset should always point to the
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* HIGH SURROGATE (leading code unit) of a pair of surrogates,
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* both on entry and upon return.
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* @param limit the limit index of text to be matched. Greater
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* than offset for a forward direction match, less than offset for
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* a backward direction match. The last character to be
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* considered for matching will be text.charAt(limit-1) in the
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* forward direction or text.charAt(limit+1) in the backward
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* direction.
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* @param incremental if TRUE, then assume further characters may
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* be inserted at limit and check for partial matching. Otherwise
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* assume the text as given is complete.
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* @return a match degree value indicating a full match, a partial
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* match, or a mismatch. If incremental is FALSE then
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* U_PARTIAL_MATCH should never be returned.
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*/
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virtual UMatchDegree matches(const Replaceable& text,
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int32_t& offset,
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int32_t limit,
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UBool incremental);
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/**
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* Implement UnicodeMatcher
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* @param result Output param to receive the pattern.
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* @param escapeUnprintable if True then escape the unprintable characters.
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* @return A reference to 'result'.
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*/
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virtual UnicodeString& toPattern(UnicodeString& result,
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UBool escapeUnprintable = FALSE) const;
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/**
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* Implement UnicodeMatcher
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* @param v the given index value.
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* @return true if this rule matches the given index value.
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*/
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virtual UBool matchesIndexValue(uint8_t v) const;
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/**
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* Implement UnicodeMatcher
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*/
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virtual void addMatchSetTo(UnicodeSet& toUnionTo) const;
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/**
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* UnicodeFunctor API
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*/
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virtual void setData(const TransliterationRuleData*);
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/**
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* ICU "poor man's RTTI", returns a UClassID for the actual class.
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*
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* @draft ICU 2.2
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*/
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virtual inline UClassID getDynamicClassID() const { return getStaticClassID(); }
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/**
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* ICU "poor man's RTTI", returns a UClassID for this class.
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*
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* @draft ICU 2.2
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*/
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static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
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private:
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static void appendNumber(UnicodeString& result, int32_t n);
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UnicodeFunctor* matcher; // owned
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uint32_t minCount;
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uint32_t maxCount;
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/**
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* The address of this static class variable serves as this class's ID
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* for ICU "poor man's RTTI".
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*/
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static const char fgClassID;
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};
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U_NAMESPACE_END
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#endif
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