705 lines
20 KiB
C++
705 lines
20 KiB
C++
/*
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**********************************************************************
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* Copyright (C) 2003, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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*/
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#ifndef __RUNARRAYS_H
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#define __RUNARRAYS_H
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#include "layout/LETypes.h"
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#include "layout/LEFontInstance.h"
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#include "unicode/utypes.h"
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#include "unicode/locid.h"
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U_NAMESPACE_BEGIN
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/**
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* The initial size of an array if it is unspecified.
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*
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* @draft ICU 2.6
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*/
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#define INITIAL_CAPACITY 16
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/**
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* When an array needs to grow, it will double in size until
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* it becomes this large, then it will grow by this amount.
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*
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* @draft ICU 2.6
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*/
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#define CAPACITY_GROW_LIMIT 128
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/**
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* The <code>RunArray</code> class is a base class for building classes
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* which represent data that is associated with runs of text. This class
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* maintains an array of limit indices into the text, subclasses
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* provide one or more arrays of data.
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*
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* @draft ICU 2.6
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*/
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class U_LAYOUTEX_API RunArray : public UObject
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{
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public:
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/**
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* Construct a <code>RunArray</code> object from a pre-existing
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* array of limit indices.
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*
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* @param limits is an array of limit indices.
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*
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* @param count is the number of entries in the limit array.
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*
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* @draft ICU 2.6
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*/
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RunArray(const le_int32 *limits, le_int32 count);
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/**
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* Construct an empty <code>RunArray</code> object. Clients can add limit
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* indices array using the <code>add</code> method.
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*
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* @param initialCapacity is the initial size of the limit indices array. If
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* this value is zero, no array will be allocated.
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*
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* @see add
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*
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* @draft ICU 2.6
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*/
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RunArray(le_int32 initalCapacity);
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/**
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* The destructor; virtual so that subclass destructors are invoked as well.
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*
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* @draft ICU 2.6
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*/
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virtual ~RunArray();
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/**
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* Get the number of entries in the limit indices array.
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*
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* @return the number of entries in the limit indices array.
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*
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* @draft ICU 2.6
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*/
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le_int32 getCount() const;
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/**
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* Get the last limit index. This is the number of characters in
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* the text.
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*
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* @return the last limit index.
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*
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* @draft ICU 2.6
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*/
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le_int32 getLimit() const;
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/**
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* Get the limit index for a particular run of text.
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*
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* @param run is the run. This is an index into the limit index array.
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*
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* @return the limit index for the run, or -1 if <code>run</code> is out of bounds.
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*
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* @draft ICU 2.6
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*/
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le_int32 getLimit(le_int32 run) const;
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/**
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* Add a limit index to the limit indices array and return the run index
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* where it was stored. If the array does not exist, it will be created by
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* calling the <code>init</code> method. If it is full, it will be grown by
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* calling the <code>grow</code> method.
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*
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* If the <code>RunArray</code> object was created with a client-supplied
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* limit indices array, this method will return a run index of -1.
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*
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* Subclasses should not override this method. Rather they should provide
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* a new <code>add</code> method which takes a limit index along with whatever
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* other data they implement. The new <code>add</code> method should
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* first call this method to grow the data arrays, and use the return value
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* to store the data in their own arrays.
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*
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* @param limit is the limit index to add to the array.
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*
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* @return the run index where the limit index was stored, or -1 if the limit index cannt be stored.
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*
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* @see init
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* @see grow
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*
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* @draft ICU 2.6
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*/
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le_int32 add(le_int32 limit);
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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 2.6
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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 2.6
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*/
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static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
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protected:
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/**
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* Create a data array with the given initial size. This method will be
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* called by the <code>add</code> method if there is no limit indices
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* array. Subclasses which override this method must also call it from
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* the overriding method to create the limit indices array.
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*
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* @param capacity is the initial size of the data array.
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*
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* @see add
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*
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* @draft ICU 2.6
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*/
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virtual void init(le_int32 capacity);
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/**
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* Grow a data array to the given initial size. This method will be
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* called by the <code>add</code> method if the limit indices
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* array is full. Subclasses which override this method must also call it from
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* the overriding method to grow the limit indices array.
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*
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* @param capacity is the initial size of the data array.
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*
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* @see add
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*
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* @draft ICU 2.6
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*/
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virtual void grow(le_int32 capacity);
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/**
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* Set by the constructors to indicate whether
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* or not the client supplied the data arrays.
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* If they were supplied by the client, the
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* <code>add</code> method won't change the arrays
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* and the destructor won't delete them.
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*/
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le_bool fClientArrays;
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private:
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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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le_int32 ensureCapacity();
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RunArray();
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RunArray(const RunArray & /*other*/);
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RunArray &operator=(const RunArray & /*other*/) { return *this; };
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const le_int32 *fLimits;
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le_int32 fCount;
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le_int32 fCapacity;
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};
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inline RunArray::RunArray()
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: UObject(), fClientArrays(false), fLimits(NULL), fCount(0), fCapacity(0)
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{
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// nothing else to do...
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}
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inline RunArray::RunArray(const RunArray & /*other*/)
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: UObject(), fClientArrays(false), fLimits(NULL), fCount(0), fCapacity(0)
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{
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// nothing else to do...
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}
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inline RunArray::RunArray(const le_int32 *limits, le_int32 count)
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: UObject(), fClientArrays(true), fLimits(limits), fCount(count), fCapacity(count)
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{
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// nothing else to do...
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}
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inline RunArray::RunArray(le_int32 initialCapacity)
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: fClientArrays(false), fLimits(NULL), fCount(0), fCapacity(initialCapacity)
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{
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if (initialCapacity > 0) {
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fLimits = LE_NEW_ARRAY(le_int32, fCapacity);
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}
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}
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inline RunArray::~RunArray()
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{
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if (! fClientArrays) {
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LE_DELETE_ARRAY(fLimits);
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fLimits = NULL;
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}
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}
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inline le_int32 RunArray::getCount() const
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{
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return fCount;
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}
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inline le_int32 RunArray::getLimit(le_int32 run) const
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{
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if (run < 0 || run >= fCount) {
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return -1;
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}
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return fLimits[run];
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}
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inline le_int32 RunArray::getLimit() const
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{
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return getLimit(fCount - 1);
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}
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/**
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* The <code>FontRuns</code> class associates pointers to <code>LEFontInstance</code>
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* objects with runs of text.
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*
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* @draft ICU 2.6
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*/
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class U_LAYOUTEX_API FontRuns : public RunArray
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{
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public:
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/**
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* Construct a <code>FontRuns</code> object from pre-existing arrays of fonts
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* and limit indices.
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*
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* @param fonts is the address of an array of pointers to <code>LEFontInstance</code> objects.
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*
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* @param limits is the address of an array of limit indices.
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*
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* @param count is the number of entries in the two arrays.
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*
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* @draft ICU 2.6
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*/
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FontRuns(const LEFontInstance **fonts, const le_int32 *limits, le_int32 count);
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/**
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* Construct an empty <code>FontRuns</code> object. Clients can add font and limit
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* indices arrays using the <code>add</code> method.
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*
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* @param initialCapacity is the initial size of the font and limit indices arrays. If
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* this value is zero, no arrays will be allocated.
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*
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* @see add
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*
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* @draft ICU 2.6
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*/
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FontRuns(le_int32 initialCapacity);
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/**
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* The destructor; virtual so that subclass destructors are invoked as well.
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*
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* @draft ICU 2.6
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*/
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virtual ~FontRuns();
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/**
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* Get the <code>LEFontInstance</code> object assoicated with the given run
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* of text. Use <code>RunArray::getLimit(run)</code> to get the corresponding
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* limit index.
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*
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* @param run is the index into the font and limit indices arrays.
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*
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* @return the <code>LEFontInstance</code> associated with the given text run.
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*
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* @see RunArray::getLimit
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*
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* @draft ICU 2.6
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*/
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const LEFontInstance *getFont(le_int32 run) const;
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/**
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* Add an <code>LEFontInstance</code> and limit index pair to the data arrays and return
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* the run index where the data was stored. This method calls
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* <code>RunArray::add(limit)</code> which will create or grow the arrays as needed.
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*
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* If the <code>FontRuns</code> object was created with a client-supplied
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* font and limit indices arrays, this method will return a run index of -1.
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*
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* Subclasses should not override this method. Rather they should provide a new <code>add</code>
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* method which takes a font and a limit index along with whatever other data they implement.
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* The new <code>add</code> method should first call this method to grow the font and limit indices
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* arrays, and use the returned run index to store data their own arrays.
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*
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* @param font is the address of the <code>LEFontInstance</code> to add
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*
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* @param limit is the limit index to add
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*
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* @return the run index where the font and limit index were stored, or -1 if the data cannot be stored.
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*
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* @draft ICU 2.6
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*/
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le_int32 add(const LEFontInstance *font, le_int32 limit);
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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 2.6
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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 2.6
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*/
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static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
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protected:
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virtual void init(le_int32 capacity);
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virtual void grow(le_int32 capacity);
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private:
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FontRuns();
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FontRuns(const FontRuns &other);
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FontRuns &operator=(const FontRuns & /*other*/) { return *this; };
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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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const LEFontInstance **fFonts;
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};
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inline FontRuns::FontRuns()
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: RunArray(0), fFonts(NULL)
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{
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// nothing else to do...
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}
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inline FontRuns::FontRuns(const FontRuns & /*other*/)
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: RunArray(0), fFonts(NULL)
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{
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// nothing else to do...
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}
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inline FontRuns::FontRuns(const LEFontInstance **fonts, const le_int32 *limits, le_int32 count)
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: RunArray(limits, count), fFonts(fonts)
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{
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// nothing else to do...
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}
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inline FontRuns::FontRuns(le_int32 initialCapacity)
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: RunArray(initialCapacity), fFonts(NULL)
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{
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if (initialCapacity > 0) {
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fFonts = LE_NEW_ARRAY(const LEFontInstance *, initialCapacity);
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}
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}
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inline FontRuns::~FontRuns()
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{
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if (! fClientArrays) {
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LE_DELETE_ARRAY(fFonts);
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fFonts = NULL;
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}
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}
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/**
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* The <code>LocaleRuns</code> class associates pointers to <code>Locale</code>
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* objects with runs of text.
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*
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* @draft ICU 2.6
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*/
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class U_LAYOUTEX_API LocaleRuns : public RunArray
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{
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public:
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/**
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* Construct a <code>LocaleRuns</code> object from pre-existing arrays of locales
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* and limit indices.
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*
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* @param locales is the address of an array of pointers to <code>Locale</code> objects.
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*
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* @param limits is the address of an array of limit indices.
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*
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* @param count is the number of entries in the two arrays.
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*
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* @draft ICU 2.6
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*/
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LocaleRuns(const Locale **locales, const le_int32 *limits, le_int32 count);
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/**
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* Construct an empty <code>LocaleRuns</code> object. Clients can add locale and limit
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* indices arrays using the <code>add</code> method.
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*
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* @param initialCapacity is the initial size of the locale and limit indices arrays. If
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* this value is zero, no arrays will be allocated.
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*
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* @see add
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*
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* @draft ICU 2.6
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*/
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LocaleRuns(le_int32 initialCapacity);
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/**
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* The destructor; virtual so that subclass destructors are invoked as well.
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*
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* @draft ICU 2.6
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*/
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virtual ~LocaleRuns();
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/**
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* Get the <code>Locale</code> object assoicated with the given run
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* of text. Use <code>RunArray::getLimit(run)</code> to get the corresponding
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* limit index.
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*
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* @param run is the index into the font and limit indices arrays.
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*
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* @return the <code>Locale</code> associated with the given text run.
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*
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* @see RunArray::getLimit
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*
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* @draft ICU 2.6
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*/
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const Locale *getLocale(le_int32 run) const;
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/**
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* Add a <code>Locale</code> and limit index pair to the data arrays and return
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* the run index where the data was stored. This method calls
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* <code>RunArray::add(limit)</code> which will create or grow the arrays as needed.
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*
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* If the <code>LocaleRuns</code> object was created with a client-supplied
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* locale and limit indices arrays, this method will return a run index of -1.
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*
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* Subclasses should not override this method. Rather they should provide a new <code>add</code>
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* method which takes a locale and a limit index along with whatever other data they implement.
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* The new <code>add</code> method should first call this method to grow the font and limit indices
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* arrays, and use the returned run index to store data their own arrays.
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*
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* @param locale is the address of the <code>Locale</code> to add
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*
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* @param limit is the limit index to add
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*
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* @return the run index where the locale and limit index were stored, or -1 if the data cannot be stored.
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*
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* @draft ICU 2.6
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*/
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le_int32 add(const Locale *locale, le_int32 limit);
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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 2.6
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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 2.6
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*/
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static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
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protected:
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virtual void init(le_int32 capacity);
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virtual void grow(le_int32 capacity);
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private:
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LocaleRuns();
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LocaleRuns(const LocaleRuns &other);
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LocaleRuns &operator=(const LocaleRuns & /*other*/) { return *this; };
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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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const Locale **fLocales;
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};
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inline LocaleRuns::LocaleRuns()
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: RunArray(0), fLocales(NULL)
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{
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// nothing else to do...
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}
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inline LocaleRuns::LocaleRuns(const LocaleRuns & /*other*/)
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: RunArray(0), fLocales(NULL)
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{
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// nothing else to do...
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}
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inline LocaleRuns::LocaleRuns(const Locale **locales, const le_int32 *limits, le_int32 count)
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: RunArray(limits, count), fLocales(locales)
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{
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// nothing else to do...
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}
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inline LocaleRuns::LocaleRuns(le_int32 initialCapacity)
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: RunArray(initialCapacity), fLocales(NULL)
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{
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if (initialCapacity > 0) {
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fLocales = LE_NEW_ARRAY(const Locale *, initialCapacity);
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}
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}
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inline LocaleRuns::~LocaleRuns()
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{
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if (! fClientArrays) {
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LE_DELETE_ARRAY(fLocales);
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fLocales = NULL;
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}
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}
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/**
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* The <code>ValueRuns</code> class associates integer values with runs of text.
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*
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* @draft ICU 2.6
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*/
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class U_LAYOUTEX_API ValueRuns : public RunArray
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{
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public:
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/**
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* Construct a <code>ValueRuns</code> object from pre-existing arrays of values
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* and limit indices.
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*
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* @param values is the address of an array of integer.
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*
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* @param limits is the address of an array of limit indices.
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*
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* @param count is the number of entries in the two arrays.
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*
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* @draft ICU 2.6
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*/
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ValueRuns(const le_int32 *values, const le_int32 *limits, le_int32 count);
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/**
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* Construct an empty <code>ValueRuns</code> object. Clients can add value and limit
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* indices arrays using the <code>add</code> method.
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*
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* @param initialCapacity is the initial size of the value and limit indices arrays. If
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* this value is zero, no arrays will be allocated.
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*
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* @see add
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*
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* @draft ICU 2.6
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*/
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ValueRuns(le_int32 initialCapacity);
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/**
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* The destructor; virtual so that subclass destructors are invoked as well.
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*
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* @draft ICU 2.6
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*/
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virtual ~ValueRuns();
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/**
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* Get the integer value assoicated with the given run
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* of text. Use <code>RunArray::getLimit(run)</code> to get the corresponding
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* limit index.
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*
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* @param run is the index into the font and limit indices arrays.
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*
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* @return the integer value associated with the given text run.
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*
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* @see RunArray::getLimit
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*
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* @draft ICU 2.6
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*/
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le_int32 getValue(le_int32 run) const;
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/**
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* Add an integer value and limit index pair to the data arrays and return
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* the run index where the data was stored. This method calls
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* <code>RunArray::add(limit)</code> which will create or grow the arrays as needed.
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*
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* If the <code>ValueRuns</code> object was created with a client-supplied
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* font and limit indices arrays, this method will return a run index of -1.
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*
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* Subclasses should not override this method. Rather they should provide a new <code>add</code>
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* method which takes an integer value and a limit index along with whatever other data they implement.
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* The new <code>add</code> method should first call this method to grow the font and limit indices
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* arrays, and use the returned run index to store data their own arrays.
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*
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* @param value is the integer value to add
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*
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* @param limit is the limit index to add
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*
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* @return the run index where the value and limit index were stored, or -1 if the data cannot be stored.
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*
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* @draft ICU 2.6
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*/
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le_int32 add(le_int32 value, le_int32 limit);
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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 2.6
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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 2.6
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*/
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static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
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protected:
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virtual void init(le_int32 capacity);
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virtual void grow(le_int32 capacity);
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private:
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ValueRuns();
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ValueRuns(const ValueRuns &other);
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ValueRuns &operator=(const ValueRuns & /*other*/) { return *this; };
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|
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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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const le_int32 *fValues;
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};
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inline ValueRuns::ValueRuns()
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: RunArray(0), fValues(NULL)
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{
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// nothing else to do...
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}
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|
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inline ValueRuns::ValueRuns(const ValueRuns & /*other*/)
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: RunArray(0), fValues(NULL)
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{
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// nothing else to do...
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}
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|
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inline ValueRuns::ValueRuns(const le_int32 *values, const le_int32 *limits, le_int32 count)
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: RunArray(limits, count), fValues(values)
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{
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// nothing else to do...
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}
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|
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inline ValueRuns::ValueRuns(le_int32 initialCapacity)
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: RunArray(initialCapacity), fValues(NULL)
|
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{
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if (initialCapacity > 0) {
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fValues = LE_NEW_ARRAY(le_int32, initialCapacity);
|
|
}
|
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}
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|
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inline ValueRuns::~ValueRuns()
|
|
{
|
|
if (! fClientArrays) {
|
|
LE_DELETE_ARRAY(fValues);
|
|
fValues = NULL;
|
|
}
|
|
}
|
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|
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U_NAMESPACE_END
|
|
#endif
|