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Diffstat (limited to 'Build/source/libs/icu-xetex/i18n/unicode/fmtable.h')
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diff --git a/Build/source/libs/icu-xetex/i18n/unicode/fmtable.h b/Build/source/libs/icu-xetex/i18n/unicode/fmtable.h new file mode 100644 index 00000000000..94ee32843f5 --- /dev/null +++ b/Build/source/libs/icu-xetex/i18n/unicode/fmtable.h @@ -0,0 +1,591 @@ +/* +******************************************************************************** +* Copyright (C) 1997-2006, 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" +/** + * \file + * \brief C++ API: Formattable is a thin wrapper for primitive numeric types. + */ + +#if !UCONFIG_NO_FORMATTING + +U_NAMESPACE_BEGIN + +/** + * Formattable objects can be passed to the Format class or + * its subclasses for formatting. Formattable is a thin wrapper + * class which interconverts between the primitive numeric types + * (double, long, etc.) as well as UDate and UnicodeString. + * + * <p>Internally, a Formattable object is a union of primitive types. + * As such, it can only store one flavor of data at a time. To + * determine what flavor of data it contains, use the getType method. + * + * <p>As of ICU 3.0, Formattable may also wrap a UObject pointer, + * which it owns. This allows an instance of any ICU class to be + * encapsulated in a Formattable. For legacy reasons and for + * efficiency, primitive numeric types are still stored directly + * within a Formattable. + * + * <p>The Formattable class is not suitable for subclassing. + */ +class U_I18N_API Formattable : public UObject { +public: + /** + * This enum is only used to let callers distinguish between + * the Formattable(UDate) constructor and the Formattable(double) + * constructor; the compiler cannot distinguish the signatures, + * since UDate is currently typedefed to be either double or long. + * If UDate is changed later to be a bonafide class + * or struct, then we no longer need this enum. + * @stable ICU 2.4 + */ + enum ISDATE { kIsDate }; + + /** + * Default constructor + * @stable ICU 2.4 + */ + Formattable(); // Type kLong, value 0 + + /** + * Creates a Formattable object with a UDate instance. + * @param d the UDate instance. + * @param flag the flag to indicate this is a date. Always set it to kIsDate + * @stable ICU 2.0 + */ + Formattable(UDate d, ISDATE flag); + + /** + * Creates a Formattable object with a double number. + * @param d the double number. + * @stable ICU 2.0 + */ + Formattable(double d); + + /** + * Creates a Formattable object with a long number. + * @param l the long number. + * @stable ICU 2.0 + */ + Formattable(int32_t l); + + /** + * Creates a Formattable object with an int64_t number + * @param ll the int64_t number. + * @stable ICU 2.8 + */ + Formattable(int64_t ll); + +#if !UCONFIG_NO_CONVERSION + /** + * Creates a Formattable object with a char string pointer. + * Assumes that the char string is null terminated. + * @param strToCopy the char string. + * @stable ICU 2.0 + */ + Formattable(const char* strToCopy); +#endif + + /** + * Creates a Formattable object with a UnicodeString object to copy from. + * @param strToCopy the UnicodeString string. + * @stable ICU 2.0 + */ + Formattable(const UnicodeString& strToCopy); + + /** + * Creates a Formattable object with a UnicodeString object to adopt from. + * @param strToAdopt the UnicodeString string. + * @stable ICU 2.0 + */ + Formattable(UnicodeString* strToAdopt); + + /** + * Creates a Formattable object with an array of Formattable objects. + * @param arrayToCopy the Formattable object array. + * @param count the array count. + * @stable ICU 2.0 + */ + Formattable(const Formattable* arrayToCopy, int32_t count); + + /** + * Creates a Formattable object that adopts the given UObject. + * @param objectToAdopt the UObject to set this object to + * @stable ICU 3.0 + */ + Formattable(UObject* objectToAdopt); + + /** + * Copy constructor. + * @stable ICU 2.0 + */ + Formattable(const Formattable&); + + /** + * Assignment operator. + * @param rhs The Formattable object to copy into this object. + * @stable ICU 2.0 + */ + Formattable& operator=(const Formattable &rhs); + + /** + * Equality comparison. + * @param other the object to be compared with. + * @return TRUE if other are equal to this, FALSE otherwise. + * @stable ICU 2.0 + */ + UBool operator==(const Formattable &other) const; + + /** + * Equality operator. + * @param other the object to be compared with. + * @return TRUE if other are unequal to this, FALSE otherwise. + * @stable ICU 2.0 + */ + UBool operator!=(const Formattable& other) const + { return !operator==(other); } + + /** + * Destructor. + * @stable ICU 2.0 + */ + virtual ~Formattable(); + + /** + * Clone this object. + * Clones can be used concurrently in multiple threads. + * If an error occurs, then NULL is returned. + * The caller must delete the clone. + * + * @return a clone of this object + * + * @see getDynamicClassID + * @stable ICU 2.8 + */ + Formattable *clone() const; + + /** + * Selector for flavor of data type contained within a + * Formattable object. Formattable is a union of several + * different types, and at any time contains exactly one type. + * @stable ICU 2.4 + */ + enum Type { + /** + * Selector indicating a UDate value. Use getDate to retrieve + * the value. + * @stable ICU 2.4 + */ + kDate, + + /** + * Selector indicating a double value. Use getDouble to + * retrieve the value. + * @stable ICU 2.4 + */ + kDouble, + + /** + * Selector indicating a 32-bit integer value. Use getLong to + * retrieve the value. + * @stable ICU 2.4 + */ + kLong, + + /** + * Selector indicating a UnicodeString value. Use getString + * to retrieve the value. + * @stable ICU 2.4 + */ + kString, + + /** + * Selector indicating an array of Formattables. Use getArray + * to retrieve the value. + * @stable ICU 2.4 + */ + kArray, + + /** + * Selector indicating a 64-bit integer value. Use getInt64 + * to retrieve the value. + * @stable ICU 2.8 + */ + kInt64, + + /** + * Selector indicating a UObject value. Use getObject to + * retrieve the value. + * @stable ICU 3.0 + */ + kObject + }; + + /** + * Gets the data type of this Formattable object. + * @return the data type of this Formattable object. + * @stable ICU 2.0 + */ + Type getType(void) const; + + /** + * Returns TRUE if the data type of this Formattable object + * is kDouble, kLong, or kInt64. + * @return TRUE if this is a pure numeric object + * @stable ICU 3.0 + */ + UBool isNumeric() const; + + /** + * Gets the double value of this object. If this object is not of type + * kDouble then the result is undefined. + * @return the double value of this object. + * @stable ICU 2.0 + */ + double getDouble(void) const { return fValue.fDouble; } + + /** + * Gets the double value of this object. If this object is of type + * long or int64 then a casting conversion is peformed, with + * possible loss of precision. If the type is kObject and the + * object is a Measure, then the result of + * getNumber().getDouble(status) is returned. If this object is + * neither a numeric type nor a Measure, then 0 is returned and + * the status is set to U_INVALID_FORMAT_ERROR. + * @param status the error code + * @return the double value of this object. + * @stable ICU 3.0 + */ + double getDouble(UErrorCode& status) const; + + /** + * Gets the long value of this object. If this object is not of type + * kLong then the result is undefined. + * @return the long value of this object. + * @stable ICU 2.0 + */ + int32_t getLong(void) const { return (int32_t)fValue.fInt64; } + + /** + * Gets the long value of this object. If the magnitude is too + * large to fit in a long, then the maximum or minimum long value, + * as appropriate, is returned and the status is set to + * U_INVALID_FORMAT_ERROR. If this object is of type kInt64 and + * it fits within a long, then no precision is lost. If it is of + * type kDouble, then a casting conversion is peformed, with + * truncation of any fractional part. If the type is kObject and + * the object is a Measure, then the result of + * getNumber().getLong(status) is returned. If this object is + * neither a numeric type nor a Measure, then 0 is returned and + * the status is set to U_INVALID_FORMAT_ERROR. + * @param status the error code + * @return the long value of this object. + * @stable ICU 3.0 + */ + int32_t getLong(UErrorCode& status) const; + + /** + * Gets the int64 value of this object. If this object is not of type + * kInt64 then the result is undefined. + * @return the int64 value of this object. + * @stable ICU 2.8 + */ + int64_t getInt64(void) const { return fValue.fInt64; } + + /** + * Gets the int64 value of this object. If this object is of type + * kDouble and the magnitude is too large to fit in an int64, then + * the maximum or minimum int64 value, as appropriate, is returned + * and the status is set to U_INVALID_FORMAT_ERROR. If the + * magnitude fits in an int64, then a casting conversion is + * peformed, with truncation of any fractional part. If the type + * is kObject and the object is a Measure, then the result of + * getNumber().getDouble(status) is returned. If this object is + * neither a numeric type nor a Measure, then 0 is returned and + * the status is set to U_INVALID_FORMAT_ERROR. + * @param status the error code + * @return the int64 value of this object. + * @stable ICU 3.0 + */ + int64_t getInt64(UErrorCode& status) const; + + /** + * Gets the Date value of this object. If this object is not of type + * kDate then the result is undefined. + * @return the Date value of this object. + * @stable ICU 2.0 + */ + UDate getDate() const { return fValue.fDate; } + + /** + * Gets the Date value of this object. If the type is not a date, + * status is set to U_INVALID_FORMAT_ERROR and the return value is + * undefined. + * @param status the error code. + * @return the Date value of this object. + * @stable ICU 3.0 + */ + UDate getDate(UErrorCode& status) const; + + /** + * Gets the string value of this object. If this object is not of type + * kString then the result is undefined. + * @param result Output param to receive the Date value of this object. + * @return A reference to 'result'. + * @stable ICU 2.0 + */ + UnicodeString& getString(UnicodeString& result) const + { result=*fValue.fString; return result; } + + /** + * Gets the string value of this object. If the type is not a + * string, status is set to U_INVALID_FORMAT_ERROR and a bogus + * string is returned. + * @param result Output param to receive the Date value of this object. + * @param status the error code. + * @return A reference to 'result'. + * @stable ICU 3.0 + */ + UnicodeString& getString(UnicodeString& result, UErrorCode& status) const; + + /** + * Gets a const reference to the string value of this object. If + * this object is not of type kString then the result is + * undefined. + * @return a const reference to the string value of this object. + * @stable ICU 2.0 + */ + inline const UnicodeString& getString(void) const; + + /** + * Gets a const reference to the string value of this object. If + * the type is not a string, status is set to + * U_INVALID_FORMAT_ERROR and the result is a bogus string. + * @param status the error code. + * @return a const reference to the string value of this object. + * @stable ICU 3.0 + */ + const UnicodeString& getString(UErrorCode& status) const; + + /** + * Gets a reference to the string value of this object. If this + * object is not of type kString then the result is undefined. + * @return a reference to the string value of this object. + * @stable ICU 2.0 + */ + inline UnicodeString& getString(void); + + /** + * Gets a reference to the string value of this object. If the + * type is not a string, status is set to U_INVALID_FORMAT_ERROR + * and the result is a bogus string. + * @param status the error code. + * @return a reference to the string value of this object. + * @stable ICU 3.0 + */ + UnicodeString& getString(UErrorCode& status); + + /** + * Gets the array value and count of this object. If this object + * is not of type kArray then the result is undefined. + * @param count fill-in with the count of this object. + * @return the array value of this object. + * @stable ICU 2.0 + */ + const Formattable* getArray(int32_t& count) const + { count=fValue.fArrayAndCount.fCount; return fValue.fArrayAndCount.fArray; } + + /** + * Gets the array value and count of this object. If the type is + * not an array, status is set to U_INVALID_FORMAT_ERROR, count is + * set to 0, and the result is NULL. + * @param count fill-in with the count of this object. + * @param status the error code. + * @return the array value of this object. + * @stable ICU 3.0 + */ + const Formattable* getArray(int32_t& count, UErrorCode& status) const; + + /** + * Accesses the specified element in the array value of this + * Formattable object. If this object is not of type kArray then + * the result is undefined. + * @param index the specified index. + * @return the accessed element in the array. + * @stable ICU 2.0 + */ + Formattable& operator[](int32_t index) { return fValue.fArrayAndCount.fArray[index]; } + + /** + * Returns a pointer to the UObject contained within this + * formattable, or NULL if this object does not contain a UObject. + * @return a UObject pointer, or NULL + * @stable ICU 3.0 + */ + const UObject* getObject() const; + + /** + * Sets the double value of this object and changes the type to + * kDouble. + * @param d the new double value to be set. + * @stable ICU 2.0 + */ + void setDouble(double d); + + /** + * Sets the long value of this object and changes the type to + * kLong. + * @param l the new long value to be set. + * @stable ICU 2.0 + */ + void setLong(int32_t l); + + /** + * Sets the int64 value of this object and changes the type to + * kInt64. + * @param ll the new int64 value to be set. + * @stable ICU 2.8 + */ + void setInt64(int64_t ll); + + /** + * Sets the Date value of this object and changes the type to + * kDate. + * @param d the new Date value to be set. + * @stable ICU 2.0 + */ + void setDate(UDate d); + + /** + * Sets the string value of this object and changes the type to + * kString. + * @param stringToCopy the new string value to be set. + * @stable ICU 2.0 + */ + void setString(const UnicodeString& stringToCopy); + + /** + * Sets the array value and count of this object and changes the + * type to kArray. + * @param array the array value. + * @param count the number of array elements to be copied. + * @stable ICU 2.0 + */ + void setArray(const Formattable* array, int32_t count); + + /** + * Sets and adopts the string value and count of this object and + * changes the type to kArray. + * @param stringToAdopt the new string value to be adopted. + * @stable ICU 2.0 + */ + void adoptString(UnicodeString* stringToAdopt); + + /** + * Sets and adopts the array value and count of this object and + * changes the type to kArray. + * @stable ICU 2.0 + */ + void adoptArray(Formattable* array, int32_t count); + + /** + * Sets and adopts the UObject value of this object and changes + * the type to kObject. After this call, the caller must not + * delete the given object. + * @param objectToAdopt the UObject value to be adopted + * @stable ICU 3.0 + */ + void adoptObject(UObject* objectToAdopt); + + /** + * ICU "poor man's RTTI", returns a UClassID for the actual class. + * + * @stable ICU 2.2 + */ + virtual UClassID getDynamicClassID() const; + + /** + * ICU "poor man's RTTI", returns a UClassID for this class. + * + * @stable ICU 2.2 + */ + static UClassID U_EXPORT2 getStaticClassID(); + + /** + * Deprecated variant of getLong(UErrorCode&). + * @param status the error code + * @return the long value of this object. + * @deprecated ICU 3.0 use getLong(UErrorCode&) instead + */ + inline int32_t getLong(UErrorCode* status) const; + +private: + /** + * Cleans up the memory for unwanted values. For example, the adopted + * string or array objects. + */ + void dispose(void); + + UnicodeString* getBogus() const; + + union { + UObject* fObject; + UnicodeString* fString; + double fDouble; + int64_t fInt64; + UDate fDate; + struct { + Formattable* fArray; + int32_t fCount; + } fArrayAndCount; + } fValue; + + 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; +} + +inline int32_t Formattable::getLong(UErrorCode* status) const { + return getLong(*status); +} + +U_NAMESPACE_END + +#endif /* #if !UCONFIG_NO_FORMATTING */ + +#endif //_FMTABLE +//eof + |