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/*
**********************************************************************
* Copyright (C) 2003-2008, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
*/
#ifndef __RUNARRAYS_H
#define __RUNARRAYS_H
#include "layout/LETypes.h"
#include "layout/LEFontInstance.h"
#include "unicode/utypes.h"
#include "unicode/locid.h"
/**
* \file
* \brief C++ API: base class for building classes which represent data that is associated with runs of text.
*/
U_NAMESPACE_BEGIN
/**
* The initial size of an array if it is unspecified.
*
* @stable ICU 3.2
*/
#define INITIAL_CAPACITY 16
/**
* When an array needs to grow, it will double in size until
* it becomes this large, then it will grow by this amount.
*
* @stable ICU 3.2
*/
#define CAPACITY_GROW_LIMIT 128
/**
* The <code>RunArray</code> class is a base class for building classes
* which represent data that is associated with runs of text. This class
* maintains an array of limit indices into the text, subclasses
* provide one or more arrays of data.
*
* @stable ICU 3.2
*/
class U_LAYOUTEX_API RunArray : public UObject
{
public:
/**
* Construct a <code>RunArray</code> object from a pre-existing
* array of limit indices.
*
* @param limits is an array of limit indices. This array must remain
* valid until the <code>RunArray</code> object is destroyed.
*
* @param count is the number of entries in the limit array.
*
* @stable ICU 3.2
*/
inline RunArray(const le_int32 *limits, le_int32 count);
/**
* Construct an empty <code>RunArray</code> object. Clients can add limit
* indices array using the <code>add</code> method.
*
* @param initialCapacity is the initial size of the limit indices array. If
* this value is zero, no array will be allocated.
*
* @see add
*
* @stable ICU 3.2
*/
RunArray(le_int32 initialCapacity);
/**
* The destructor; virtual so that subclass destructors are invoked as well.
*
* @stable ICU 3.2
*/
virtual ~RunArray();
/**
* Get the number of entries in the limit indices array.
*
* @return the number of entries in the limit indices array.
*
* @stable ICU 3.2
*/
inline le_int32 getCount() const;
/**
* Reset the limit indices array. This method sets the number of entries in the
* limit indices array to zero. It does not delete the array.
*
* Note: Subclass arrays will also be reset and not deleted.
*
* @stable ICU 3.6
*/
inline void reset();
/**
* Get the last limit index. This is the number of characters in
* the text.
*
* @return the last limit index.
*
* @stable ICU 3.2
*/
inline le_int32 getLimit() const;
/**
* Get the limit index for a particular run of text.
*
* @param run is the run. This is an index into the limit index array.
*
* @return the limit index for the run, or -1 if <code>run</code> is out of bounds.
*
* @stable ICU 3.2
*/
inline le_int32 getLimit(le_int32 run) const;
/**
* Add a limit index to the limit indices array and return the run index
* where it was stored. If the array does not exist, it will be created by
* calling the <code>init</code> method. If it is full, it will be grown by
* calling the <code>grow</code> method.
*
* If the <code>RunArray</code> object was created with a client-supplied
* limit indices array, this method will return a run index of -1.
*
* Subclasses should not override this method. Rather they should provide
* a new <code>add</code> method which takes a limit index along with whatever
* other data they implement. The new <code>add</code> method should
* first call this method to grow the data arrays, and use the return value
* to store the data in their own arrays.
*
* @param limit is the limit index to add to the array.
*
* @return the run index where the limit index was stored, or -1 if the limit index cannt be stored.
*
* @see init
* @see grow
*
* @stable ICU 3.2
*/
le_int32 add(le_int32 limit);
/**
* ICU "poor man's RTTI", returns a UClassID for this class.
*
* @stable ICU 3.2
*/
static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
/**
* ICU "poor man's RTTI", returns a UClassID for the actual class.
*
* @stable ICU 3.2
*/
virtual inline UClassID getDynamicClassID() const { return getStaticClassID(); }
protected:
/**
* Create a data array with the given initial size. This method will be
* called by the <code>add</code> method if there is no limit indices
* array. Subclasses which override this method must also call it from
* the overriding method to create the limit indices array.
*
* @param capacity is the initial size of the data array.
*
* @see add
*
* @stable ICU 3.2
*/
virtual void init(le_int32 capacity);
/**
* Grow a data array to the given initial size. This method will be
* called by the <code>add</code> method if the limit indices
* array is full. Subclasses which override this method must also call it from
* the overriding method to grow the limit indices array.
*
* @param capacity is the initial size of the data array.
*
* @see add
*
* @stable ICU 3.2
*/
virtual void grow(le_int32 capacity);
/**
* Set by the constructors to indicate whether
* or not the client supplied the data arrays.
* If they were supplied by the client, the
* <code>add</code> method won't change the arrays
* and the destructor won't delete them.
*
* @stable ICU 3.2
*/
le_bool fClientArrays;
private:
/**
* The address of this static class variable serves as this class's ID
* for ICU "poor man's RTTI".
*/
static const char fgClassID;
le_int32 ensureCapacity();
inline RunArray();
inline RunArray(const RunArray & /*other*/);
inline RunArray &operator=(const RunArray & /*other*/) { return *this; };
const le_int32 *fLimits;
le_int32 fCount;
le_int32 fCapacity;
};
inline RunArray::RunArray()
: UObject(), fClientArrays(FALSE), fLimits(NULL), fCount(0), fCapacity(0)
{
// nothing else to do...
}
inline RunArray::RunArray(const RunArray & /*other*/)
: UObject(), fClientArrays(FALSE), fLimits(NULL), fCount(0), fCapacity(0)
{
// nothing else to do...
}
inline RunArray::RunArray(const le_int32 *limits, le_int32 count)
: UObject(), fClientArrays(TRUE), fLimits(limits), fCount(count), fCapacity(count)
{
// nothing else to do...
}
inline le_int32 RunArray::getCount() const
{
return fCount;
}
inline void RunArray::reset()
{
fCount = 0;
}
inline le_int32 RunArray::getLimit(le_int32 run) const
{
if (run < 0 || run >= fCount) {
return -1;
}
return fLimits[run];
}
inline le_int32 RunArray::getLimit() const
{
return getLimit(fCount - 1);
}
/**
* The <code>FontRuns</code> class associates pointers to <code>LEFontInstance</code>
* objects with runs of text.
*
* @stable ICU 3.2
*/
class U_LAYOUTEX_API FontRuns : public RunArray
{
public:
/**
* Construct a <code>FontRuns</code> object from pre-existing arrays of fonts
* and limit indices.
*
* @param fonts is the address of an array of pointers to <code>LEFontInstance</code> objects. This
* array, and the <code>LEFontInstance</code> objects to which it points must remain
* valid until the <code>FontRuns</code> object is destroyed.
*
* @param limits is the address of an array of limit indices. This array must remain valid until
* the <code>FontRuns</code> object is destroyed.
*
* @param count is the number of entries in the two arrays.
*
* @stable ICU 3.2
*/
inline FontRuns(const LEFontInstance **fonts, const le_int32 *limits, le_int32 count);
/**
* Construct an empty <code>FontRuns</code> object. Clients can add font and limit
* indices arrays using the <code>add</code> method.
*
* @param initialCapacity is the initial size of the font and limit indices arrays. If
* this value is zero, no arrays will be allocated.
*
* @see add
*
* @stable ICU 3.2
*/
FontRuns(le_int32 initialCapacity);
/**
* The destructor; virtual so that subclass destructors are invoked as well.
*
* @stable ICU 3.2
*/
virtual ~FontRuns();
/**
* Get the <code>LEFontInstance</code> object assoicated with the given run
* of text. Use <code>RunArray::getLimit(run)</code> to get the corresponding
* limit index.
*
* @param run is the index into the font and limit indices arrays.
*
* @return the <code>LEFontInstance</code> associated with the given text run.
*
* @see RunArray::getLimit
*
* @stable ICU 3.2
*/
const LEFontInstance *getFont(le_int32 run) const;
/**
* Add an <code>LEFontInstance</code> and limit index pair to the data arrays and return
* the run index where the data was stored. This method calls
* <code>RunArray::add(limit)</code> which will create or grow the arrays as needed.
*
* If the <code>FontRuns</code> object was created with a client-supplied
* font and limit indices arrays, this method will return a run index of -1.
*
* Subclasses should not override this method. Rather they should provide a new <code>add</code>
* method which takes a font and a limit index along with whatever other data they implement.
* The new <code>add</code> method should first call this method to grow the font and limit indices
* arrays, and use the returned run index to store data their own arrays.
*
* @param font is the address of the <code>LEFontInstance</code> to add. This object must
* remain valid until the <code>FontRuns</code> object is destroyed.
*
* @param limit is the limit index to add
*
* @return the run index where the font and limit index were stored, or -1 if the data cannot be stored.
*
* @stable ICU 3.2
*/
le_int32 add(const LEFontInstance *font, le_int32 limit);
/**
* ICU "poor man's RTTI", returns a UClassID for this class.
*
* @stable ICU 3.2
*/
static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
/**
* ICU "poor man's RTTI", returns a UClassID for the actual class.
*
* @stable ICU 3.2
*/
virtual inline UClassID getDynamicClassID() const { return getStaticClassID(); }
protected:
virtual void init(le_int32 capacity);
virtual void grow(le_int32 capacity);
private:
inline FontRuns();
inline FontRuns(const FontRuns &other);
inline FontRuns &operator=(const FontRuns & /*other*/) { return *this; };
/**
* The address of this static class variable serves as this class's ID
* for ICU "poor man's RTTI".
*/
static const char fgClassID;
const LEFontInstance **fFonts;
};
inline FontRuns::FontRuns()
: RunArray(0), fFonts(NULL)
{
// nothing else to do...
}
inline FontRuns::FontRuns(const FontRuns & /*other*/)
: RunArray(0), fFonts(NULL)
{
// nothing else to do...
}
inline FontRuns::FontRuns(const LEFontInstance **fonts, const le_int32 *limits, le_int32 count)
: RunArray(limits, count), fFonts(fonts)
{
// nothing else to do...
}
/**
* The <code>LocaleRuns</code> class associates pointers to <code>Locale</code>
* objects with runs of text.
*
* @stable ICU 3.2
*/
class U_LAYOUTEX_API LocaleRuns : public RunArray
{
public:
/**
* Construct a <code>LocaleRuns</code> object from pre-existing arrays of locales
* and limit indices.
*
* @param locales is the address of an array of pointers to <code>Locale</code> objects. This array,
* and the <code>Locale</code> objects to which it points, must remain valid until
* the <code>LocaleRuns</code> object is destroyed.
*
* @param limits is the address of an array of limit indices. This array must remain valid until the
* <code>LocaleRuns</code> object is destroyed.
*
* @param count is the number of entries in the two arrays.
*
* @stable ICU 3.2
*/
inline LocaleRuns(const Locale **locales, const le_int32 *limits, le_int32 count);
/**
* Construct an empty <code>LocaleRuns</code> object. Clients can add locale and limit
* indices arrays using the <code>add</code> method.
*
* @param initialCapacity is the initial size of the locale and limit indices arrays. If
* this value is zero, no arrays will be allocated.
*
* @see add
*
* @stable ICU 3.2
*/
LocaleRuns(le_int32 initialCapacity);
/**
* The destructor; virtual so that subclass destructors are invoked as well.
*
* @stable ICU 3.2
*/
virtual ~LocaleRuns();
/**
* Get the <code>Locale</code> object assoicated with the given run
* of text. Use <code>RunArray::getLimit(run)</code> to get the corresponding
* limit index.
*
* @param run is the index into the font and limit indices arrays.
*
* @return the <code>Locale</code> associated with the given text run.
*
* @see RunArray::getLimit
*
* @stable ICU 3.2
*/
const Locale *getLocale(le_int32 run) const;
/**
* Add a <code>Locale</code> and limit index pair to the data arrays and return
* the run index where the data was stored. This method calls
* <code>RunArray::add(limit)</code> which will create or grow the arrays as needed.
*
* If the <code>LocaleRuns</code> object was created with a client-supplied
* locale and limit indices arrays, this method will return a run index of -1.
*
* Subclasses should not override this method. Rather they should provide a new <code>add</code>
* method which takes a locale and a limit index along with whatever other data they implement.
* The new <code>add</code> method should first call this method to grow the font and limit indices
* arrays, and use the returned run index to store data their own arrays.
*
* @param locale is the address of the <code>Locale</code> to add. This object must remain valid
* until the <code>LocaleRuns</code> object is destroyed.
*
* @param limit is the limit index to add
*
* @return the run index where the locale and limit index were stored, or -1 if the data cannot be stored.
*
* @stable ICU 3.2
*/
le_int32 add(const Locale *locale, le_int32 limit);
/**
* ICU "poor man's RTTI", returns a UClassID for this class.
*
* @stable ICU 3.2
*/
static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
/**
* ICU "poor man's RTTI", returns a UClassID for the actual class.
*
* @stable ICU 3.2
*/
virtual inline UClassID getDynamicClassID() const { return getStaticClassID(); }
protected:
virtual void init(le_int32 capacity);
virtual void grow(le_int32 capacity);
/**
* @internal
*/
const Locale **fLocales;
private:
inline LocaleRuns();
inline LocaleRuns(const LocaleRuns &other);
inline LocaleRuns &operator=(const LocaleRuns & /*other*/) { return *this; };
/**
* The address of this static class variable serves as this class's ID
* for ICU "poor man's RTTI".
*/
static const char fgClassID;
};
inline LocaleRuns::LocaleRuns()
: RunArray(0), fLocales(NULL)
{
// nothing else to do...
}
inline LocaleRuns::LocaleRuns(const LocaleRuns & /*other*/)
: RunArray(0), fLocales(NULL)
{
// nothing else to do...
}
inline LocaleRuns::LocaleRuns(const Locale **locales, const le_int32 *limits, le_int32 count)
: RunArray(limits, count), fLocales(locales)
{
// nothing else to do...
}
/**
* The <code>ValueRuns</code> class associates integer values with runs of text.
*
* @stable ICU 3.2
*/
class U_LAYOUTEX_API ValueRuns : public RunArray
{
public:
/**
* Construct a <code>ValueRuns</code> object from pre-existing arrays of values
* and limit indices.
*
* @param values is the address of an array of integer. This array must remain valid until
* the <code>ValueRuns</code> object is destroyed.
*
* @param limits is the address of an array of limit indices. This array must remain valid until
* the <code>ValueRuns</code> object is destroyed.
*
* @param count is the number of entries in the two arrays.
*
* @stable ICU 3.2
*/
inline ValueRuns(const le_int32 *values, const le_int32 *limits, le_int32 count);
/**
* Construct an empty <code>ValueRuns</code> object. Clients can add value and limit
* indices arrays using the <code>add</code> method.
*
* @param initialCapacity is the initial size of the value and limit indices arrays. If
* this value is zero, no arrays will be allocated.
*
* @see add
*
* @stable ICU 3.2
*/
ValueRuns(le_int32 initialCapacity);
/**
* The destructor; virtual so that subclass destructors are invoked as well.
*
* @stable ICU 3.2
*/
virtual ~ValueRuns();
/**
* Get the integer value assoicated with the given run
* of text. Use <code>RunArray::getLimit(run)</code> to get the corresponding
* limit index.
*
* @param run is the index into the font and limit indices arrays.
*
* @return the integer value associated with the given text run.
*
* @see RunArray::getLimit
*
* @stable ICU 3.2
*/
le_int32 getValue(le_int32 run) const;
/**
* Add an integer value and limit index pair to the data arrays and return
* the run index where the data was stored. This method calls
* <code>RunArray::add(limit)</code> which will create or grow the arrays as needed.
*
* If the <code>ValueRuns</code> object was created with a client-supplied
* font and limit indices arrays, this method will return a run index of -1.
*
* Subclasses should not override this method. Rather they should provide a new <code>add</code>
* method which takes an integer value and a limit index along with whatever other data they implement.
* The new <code>add</code> method should first call this method to grow the font and limit indices
* arrays, and use the returned run index to store data their own arrays.
*
* @param value is the integer value to add
*
* @param limit is the limit index to add
*
* @return the run index where the value and limit index were stored, or -1 if the data cannot be stored.
*
* @stable ICU 3.2
*/
le_int32 add(le_int32 value, le_int32 limit);
/**
* ICU "poor man's RTTI", returns a UClassID for this class.
*
* @stable ICU 3.2
*/
static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
/**
* ICU "poor man's RTTI", returns a UClassID for the actual class.
*
* @stable ICU 3.2
*/
virtual inline UClassID getDynamicClassID() const { return getStaticClassID(); }
protected:
virtual void init(le_int32 capacity);
virtual void grow(le_int32 capacity);
private:
inline ValueRuns();
inline ValueRuns(const ValueRuns &other);
inline ValueRuns &operator=(const ValueRuns & /*other*/) { return *this; };
/**
* The address of this static class variable serves as this class's ID
* for ICU "poor man's RTTI".
*/
static const char fgClassID;
const le_int32 *fValues;
};
inline ValueRuns::ValueRuns()
: RunArray(0), fValues(NULL)
{
// nothing else to do...
}
inline ValueRuns::ValueRuns(const ValueRuns & /*other*/)
: RunArray(0), fValues(NULL)
{
// nothing else to do...
}
inline ValueRuns::ValueRuns(const le_int32 *values, const le_int32 *limits, le_int32 count)
: RunArray(limits, count), fValues(values)
{
// nothing else to do...
}
U_NAMESPACE_END
#endif