fmtable.h

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/*
********************************************************************************
*   Copyright (C) 1997-2012, International Business Machines
*   Corporation and others.  All Rights Reserved.
********************************************************************************
*
* File FMTABLE.H
*
* Modification History:
*
*   Date        Name        Description
*   02/29/97    aliu        Creation.
********************************************************************************
*/
#ifndef FMTABLE_H
#define FMTABLE_H
 
#include "unicode/utypes.h"
#include "unicode/unistr.h"
#include "unicode/stringpiece.h"

 
#if !UCONFIG_NO_FORMATTING
 
U_NAMESPACE_BEGIN
 
class CharString;
class DigitList;

#if U_PLATFORM == U_PF_OS400
#define UNUM_INTERNAL_STACKARRAY_SIZE 144
#else
#define UNUM_INTERNAL_STACKARRAY_SIZE 128
#endif

class U_I18N_API Formattable : public UObject {
public:
    enum ISDATE { kIsDate };

    Formattable(); // Type kLong, value 0

    Formattable(UDate d, ISDATE flag);

    Formattable(double d);

    Formattable(int32_t l);

    Formattable(int64_t ll);
 
#if !UCONFIG_NO_CONVERSION
    Formattable(const char* strToCopy);
#endif

    Formattable(const StringPiece &number, UErrorCode &status);

    Formattable(const UnicodeString& strToCopy);

    Formattable(UnicodeString* strToAdopt);

    Formattable(const Formattable* arrayToCopy, int32_t count);

    Formattable(UObject* objectToAdopt);

    Formattable(const Formattable&);

    Formattable&    operator=(const Formattable &rhs);

    UBool          operator==(const Formattable &other) const;
    
    UBool          operator!=(const Formattable& other) const
      { return !operator==(other); }

    virtual         ~Formattable();

    Formattable *clone() const;

    enum Type {
        kDate,

        kDouble,

        kLong,

        kString,

        kArray,

        kInt64,

        kObject
   };

    Type            getType(void) const;
    
    UBool           isNumeric() const;
     
    double          getDouble(void) const { return fValue.fDouble; }
 
    double          getDouble(UErrorCode& status) const;
 
    int32_t         getLong(void) const { return (int32_t)fValue.fInt64; }
 
    int32_t         getLong(UErrorCode& status) const;
 
    int64_t         getInt64(void) const { return fValue.fInt64; }
 
    int64_t         getInt64(UErrorCode& status) const;
 
    UDate           getDate() const { return fValue.fDate; }
 
     UDate          getDate(UErrorCode& status) const;
 
    UnicodeString&  getString(UnicodeString& result) const
      { result=*fValue.fString; return result; }
 
    UnicodeString&  getString(UnicodeString& result, UErrorCode& status) const;

    inline const UnicodeString& getString(void) const;

    const UnicodeString& getString(UErrorCode& status) const;

    inline UnicodeString& getString(void);

    UnicodeString& getString(UErrorCode& status);
 
    const Formattable* getArray(int32_t& count) const
      { count=fValue.fArrayAndCount.fCount; return fValue.fArrayAndCount.fArray; }
 
    const Formattable* getArray(int32_t& count, UErrorCode& status) const;

    Formattable&    operator[](int32_t index) { return fValue.fArrayAndCount.fArray[index]; }
       
    const UObject*  getObject() const;

    StringPiece getDecimalNumber(UErrorCode &status);
 
    void            setDouble(double d);
 
    void            setLong(int32_t l);
 
    void            setInt64(int64_t ll);
 
    void            setDate(UDate d);
 
    void            setString(const UnicodeString& stringToCopy);
 
    void            setArray(const Formattable* array, int32_t count);
 
    void            adoptString(UnicodeString* stringToAdopt);
 
    void            adoptArray(Formattable* array, int32_t count);
       
    void            adoptObject(UObject* objectToAdopt);

    void             setDecimalNumber(const StringPiece &numberString,
                                      UErrorCode &status);

    virtual UClassID getDynamicClassID() const;

    static UClassID U_EXPORT2 getStaticClassID();
 
#ifndef U_HIDE_DEPRECATED_API 
    inline int32_t getLong(UErrorCode* status) const;
#endif  /* U_HIDE_DEPRECATED_API */
 
#ifndef U_HIDE_INTERNAL_API
    DigitList *getDigitList() const { return fDecimalNum;}

    DigitList *getInternalDigitList();

    void adoptDigitList(DigitList *dl);
#endif  /* U_HIDE_INTERNAL_API */
 
private:
    void            dispose(void);

    void            init();
 
    UnicodeString* getBogus() const;
 
    union {
        UObject*        fObject;
        UnicodeString*  fString;
        double          fDouble;
        int64_t         fInt64;
        UDate           fDate;
        struct {
          Formattable*  fArray;
          int32_t       fCount;
        }               fArrayAndCount;
    } fValue;
 
    CharString           *fDecimalStr;
 
    DigitList            *fDecimalNum;
 
    char                fStackData[UNUM_INTERNAL_STACKARRAY_SIZE]; // must be big enough for DigitList
 
    Type                fType;
    UnicodeString       fBogus; // Bogus string when it's needed.
};
 
inline UDate Formattable::getDate(UErrorCode& status) const {
    if (fType != kDate) {
        if (U_SUCCESS(status)) {
            status = U_INVALID_FORMAT_ERROR;
        }
        return 0;
    }
    return fValue.fDate;
}
 
inline const UnicodeString& Formattable::getString(void) const {
    return *fValue.fString;
}
 
inline UnicodeString& Formattable::getString(void) {
    return *fValue.fString;
}
 
#ifndef U_HIDE_DEPRECATED_API
inline int32_t Formattable::getLong(UErrorCode* status) const {
    return getLong(*status);
}
#endif
 
 
U_NAMESPACE_END
 
#endif /* #if !UCONFIG_NO_FORMATTING */
 
#endif //_FMTABLE
//eof