Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / MS / Internal / Span.cs / 1305600 / Span.cs
//+------------------------------------------------------------------------
//
// Microsoft Avalon
// Copyright (C) Microsoft Corporation, 2001
//
// File: span.cs
//
// Contents: Generic span types
//
// Created: 9-6-2001 Worachai Chaoweeraprasit (wchao)
// [As of this creation, C# has no real generic type system]
//
//-----------------------------------------------------------------------
using System.Windows;
using System;
using System.Collections;
using MS.Utility;
using System.Diagnostics;
namespace MS.Internal
{
///
/// VECTOR: A series of spans
///
internal class SpanVector : IEnumerable
{
///
/// Constructor
///
public SpanVector(object defaultObject)
: this(
defaultObject,
new FrugalStructList()
)
{}
internal SpanVector(
object defaultObject,
FrugalStructList spans
)
{
_defaultObject = defaultObject;
_spans = spans;
}
///
/// Get enumerator to vector
///
public IEnumerator GetEnumerator()
{
return new SpanEnumerator(this);
}
///
/// Add a new span to vector
///
private void Add(Span span)
{
_spans.Add(span);
}
///
/// Delete n elements of vector
///
internal virtual void Delete(int index, int count, ref SpanPosition latestPosition)
{
DeleteInternal(index, count);
if (index <= latestPosition.Index)
latestPosition = new SpanPosition();
}
private void DeleteInternal(int index, int count)
{
// Do removes highest index to lowest to minimize the number
// of array entires copied.
for (int i = index + count - 1; i >= index; --i)
{
_spans.RemoveAt(i);
}
}
///
/// Insert n elements to vector
///
private void Insert(int index, int count)
{
for (int c = 0; c < count; c++)
_spans.Insert(index, new Span(null, 0));
}
#region Public operation
///
/// Finds the span that contains the specified character position.
///
/// position to find
/// Position of the most recently accessed span (e.g., the current span
/// of a SpanRider) for performance; FindSpan runs in O(1) time if the specified cp is in the same span
/// or an adjacent span.
/// receives the index and first cp of the span that contains the specified
/// position or, if the position is past the end of the vector, the index and cp just past the end of
/// the last span.
/// Returns true if cp is in range or false if not.
internal bool FindSpan(int cp, SpanPosition latestPosition, out SpanPosition spanPosition)
{
Debug.Assert(cp >= 0);
int spanCount = _spans.Count;
int spanIndex, spanCP;
if (cp == 0)
{
// CP zero always corresponds to span index zero
spanIndex = 0;
spanCP = 0;
}
else if (cp >= latestPosition.CP || cp * 2 < latestPosition.CP)
{
// One of the following is true:
// 1. cp is after the latest position (the most recently accessed span)
// 2. cp is closer to zero than to the latest position
if (cp >= latestPosition.CP)
{
// case 1: scan forward from the latest position
spanIndex = latestPosition.Index;
spanCP = latestPosition.CP;
}
else
{
// case 2: scan forward from the start of the span vector
spanIndex = 0;
spanCP = 0;
}
// Scan forward until we find the Span that contains the specified CP or
// reach the end of the SpanVector
for (; spanIndex < spanCount; ++spanIndex)
{
int spanLength = _spans[spanIndex].length;
if (cp < spanCP + spanLength)
{
break;
}
spanCP += spanLength;
}
}
else
{
// The specified CP is before the latest position but closer to it than to zero;
// therefore scan backwards from the latest position
spanIndex = latestPosition.Index;
spanCP = latestPosition.CP;
while (spanCP > cp)
{
Debug.Assert(spanIndex > 0);
spanCP -= _spans[--spanIndex].length;
}
}
// Return index and cp of span in out param.
spanPosition = new SpanPosition(spanIndex, spanCP);
// Return true if the span is in range.
return spanIndex != spanCount;
}
///
/// Set an element as a value to a character range
///
///
/// Implementation of span element object must implement Object.Equals to
/// avoid runtime reflection cost on equality check of nested-type object.
///
public void SetValue(int first, int length, object element)
{
Set(first, length, element, SpanVector._equals, new SpanPosition());
}
///
/// Set an element as a value to a character range; takes a SpanPosition of a recently accessed
/// span for performance and returns a known valid SpanPosition
///
public SpanPosition SetValue(int first, int length, object element, SpanPosition spanPosition)
{
return Set(first, length, element, SpanVector._equals, spanPosition);
}
///
/// Set an element as a reference to a character range
///
public void SetReference(int first, int length, object element)
{
Set(first, length, element, SpanVector._referenceEquals, new SpanPosition());
}
///
/// Set an element as a reference to a character range; takes a SpanPosition of a recently accessed
/// span for performance and returns a known valid SpanPosition
///
public SpanPosition SetReference(int first, int length, object element, SpanPosition spanPosition)
{
return Set(first, length, element, SpanVector._referenceEquals, spanPosition);
}
#endregion
private SpanPosition Set(int first, int length, object element, Equals equals, SpanPosition spanPosition)
{
bool inRange = FindSpan(first, spanPosition, out spanPosition);
// fs = index of first span partly or completely updated
// fc = character index at start of fs
int fs = spanPosition.Index;
int fc = spanPosition.CP;
// Find the span that contains the first affected cp
if (!inRange)
{
// The first cp is past the end of the last span
if (fc < first)
{
// Create default run up to first
Add(new Span(_defaultObject, first - fc));
}
if ( Count > 0
&& equals(_spans[Count-1].element, element))
{
// New Element matches end Element, just extend end Element
_spans[Count - 1].length += length;
// Make sure fs and fc still agree
if (fs == Count)
{
fc += length;
}
}
else
{
Add(new Span(element, length));
}
}
else
{
// Now find the last span affected by the update
int ls = fs;
int lc = fc;
while ( ls < Count
&& lc + _spans[ls].length <= first + length)
{
lc += _spans[ls].length;
ls++;
}
// ls = first span following update to remain unchanged in part or in whole
// lc = character index at start of ls
// expand update region backwards to include existing Spans of identical
// Element type
if (first == fc)
{
// Item at [fs] is completely replaced. Check prior item
if (fs > 0
&& equals(_spans[fs - 1].element, element))
{
// Expand update area over previous run of equal classification
fs--;
fc -= _spans[fs].length;
first = fc;
length += _spans[fs].length;
}
}
else
{
// Item at [fs] is partially replaced. Check if it is same as update
if (equals(_spans[fs].element, element))
{
// Expand update area back to start of first affected equal valued run
length = first + length - fc;
first = fc;
}
}
// Expand update region forwards to include existing Spans of identical
// Element type
if ( ls < Count
&& equals(_spans[ls].element, element))
{
// Extend update region to end of existing split run
length = lc + _spans[ls].length - first;
lc += _spans[ls].length;
ls++;
}
// If no old Spans remain beyond area affected by update, handle easily:
if (ls >= Count)
{
// None of the old span list extended beyond the update region
if (fc < first)
{
// Updated region leaves some of [fs]
if (Count != fs + 2)
{
if (!Resize(fs + 2))
throw new OutOfMemoryException();
}
_spans[fs].length = first - fc;
_spans[fs + 1] = new Span(element, length);
}
else
{
// Updated item replaces [fs]
if (Count != fs + 1)
{
if (!Resize(fs + 1))
throw new OutOfMemoryException();
}
_spans[fs] = new Span(element, length);
}
}
else
{
// Record partial elementtype at end, if any
object trailingElement = null;
int trailingLength = 0;
if (first + length > lc)
{
trailingElement = _spans[ls].element;
trailingLength = lc + _spans[ls].length - (first + length);
}
// Calculate change in number of Spans
int spanDelta = 1 // The new span
+ (first > fc ? 1 : 0) // part span at start
- (ls - fs); // existing affected span count
// Note part span at end doesn't affect the calculation - the run may need
// updating, but it doesn't need creating.
if (spanDelta < 0)
{
DeleteInternal(fs + 1, -spanDelta);
}
else if (spanDelta > 0)
{
Insert(fs + 1, spanDelta);
// Initialize inserted Spans
for (int i = 0; i < spanDelta; i++)
{
_spans[fs + 1 + i] = new Span(null, 0);
}
}
// Assign Element values
// Correct Length of split span before updated range
if (fc < first)
{
_spans[fs].length = first - fc;
fs++;
fc = first;
}
// Record Element type for updated range
_spans[fs] = new Span(element, length);
fs++;
fc += length;
// Correct Length of split span following updated range
if (lc < first + length)
{
_spans[fs] = new Span(trailingElement, trailingLength);
}
}
}
// Return a known valid span position.
return new SpanPosition(fs, fc);
}
#region Properties
///
/// Number of spans in vector
///
public int Count
{
get { return _spans.Count; }
}
///
/// The default element of vector
///
public object Default
{
get { return _defaultObject; }
}
///
/// Span accessor at nth element
///
public Span this[int index]
{
get { return _spans[index]; }
}
#endregion
#region Private members
private bool Resize(int targetCount)
{
if (targetCount > Count)
{
for (int c = 0; c < targetCount - Count; c++)
{
_spans.Add(new Span(null, 0));
}
}
else if (targetCount < Count)
{
DeleteInternal(targetCount, Count - targetCount);
}
return true;
}
static private Equals _referenceEquals = new Equals(Object.ReferenceEquals);
static private Equals _equals = new Equals(Object.Equals);
FrugalStructList _spans;
object _defaultObject;
#endregion
}
///
/// Equality check method
///
internal delegate bool Equals(object first, object second);
///
/// ENUMERATOR: To navigate a vector through its element
///
internal sealed class SpanEnumerator : IEnumerator
{
internal SpanEnumerator(SpanVector spans)
{
_spans = spans;
_current = -1;
}
///
/// The current span
///
public object Current
{
get { return _spans[_current]; }
}
///
/// Move to the next span
///
public bool MoveNext()
{
_current++;
return _current < _spans.Count ? true : false;
}
///
/// Reset the enumerator
///
public void Reset()
{
_current = -1;
}
SpanVector _spans;
int _current; // current span
}
///
/// Represents a Span's position as a pair of related values: its index in the
/// SpanVector its CP offset from the start of the SpanVector.
///
internal struct SpanPosition
{
internal SpanPosition(int spanIndex, int spanCP)
{
_spanIndex = spanIndex;
_spanCP = spanCP;
}
internal int Index
{
get { return _spanIndex; }
}
internal int CP
{
get { return _spanCP; }
}
private int _spanIndex;
private int _spanCP;
}
///
/// RIDER: To navigate a vector through character index
///
internal struct SpanRider
{
public SpanRider(SpanVector spans) : this(spans, new SpanPosition(), 0)
{
}
public SpanRider(SpanVector spans, SpanPosition latestPosition) : this(spans, latestPosition, latestPosition.CP)
{
}
public SpanRider(SpanVector spans, SpanPosition latestPosition, int cp)
{
_spans = spans;
_spanPosition = new SpanPosition();
_cp = 0;
_cch = 0;
At(latestPosition, cp);
}
///
/// Move rider to a given cp
///
public bool At(int cp)
{
return At(_spanPosition, cp);
}
public bool At(SpanPosition latestPosition, int cp)
{
bool inRange = _spans.FindSpan(cp, latestPosition, out _spanPosition);
if (inRange)
{
// cp is in range:
// - Length is the distance to the end of the span
// - CurrentPosition is cp
_cch = _spans[_spanPosition.Index].length - (cp - _spanPosition.CP);
_cp = cp;
}
else
{
// cp is out of range:
// - Length is the default span length
// - CurrentPosition is the end of the last span
_cch = int.MaxValue;
_cp = _spanPosition.CP;
}
return inRange;
}
#region Properties
///
/// The first cp of the current span
///
public int CurrentSpanStart
{
get { return _spanPosition.CP; }
}
///
/// The length of current span start from the current cp
///
public int Length
{
get { return _cch; }
}
///
/// The current position
///
public int CurrentPosition
{
get { return _cp; }
}
///
/// The element of the current span
///
public object CurrentElement
{
get { return _spanPosition.Index >= _spans.Count ? _spans.Default : _spans[_spanPosition.Index].element; }
}
///
/// Index of the span at the current position.
///
public int CurrentSpanIndex
{
get { return _spanPosition.Index; }
}
///
/// Index and first cp of the current span.
///
public SpanPosition SpanPosition
{
get { return _spanPosition; }
}
#endregion
#region Private members
SpanVector _spans; // vector of spans
SpanPosition _spanPosition; // index and cp of current span
int _cp; // current cp (may be greater than start of span)
int _cch; // distance from current cp to end of current span
#endregion
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//+------------------------------------------------------------------------
//
// Microsoft Avalon
// Copyright (C) Microsoft Corporation, 2001
//
// File: span.cs
//
// Contents: Generic span types
//
// Created: 9-6-2001 Worachai Chaoweeraprasit (wchao)
// [As of this creation, C# has no real generic type system]
//
//-----------------------------------------------------------------------
using System.Windows;
using System;
using System.Collections;
using MS.Utility;
using System.Diagnostics;
namespace MS.Internal
{
///
/// VECTOR: A series of spans
///
internal class SpanVector : IEnumerable
{
///
/// Constructor
///
public SpanVector(object defaultObject)
: this(
defaultObject,
new FrugalStructList()
)
{}
internal SpanVector(
object defaultObject,
FrugalStructList spans
)
{
_defaultObject = defaultObject;
_spans = spans;
}
///
/// Get enumerator to vector
///
public IEnumerator GetEnumerator()
{
return new SpanEnumerator(this);
}
///
/// Add a new span to vector
///
private void Add(Span span)
{
_spans.Add(span);
}
///
/// Delete n elements of vector
///
internal virtual void Delete(int index, int count, ref SpanPosition latestPosition)
{
DeleteInternal(index, count);
if (index <= latestPosition.Index)
latestPosition = new SpanPosition();
}
private void DeleteInternal(int index, int count)
{
// Do removes highest index to lowest to minimize the number
// of array entires copied.
for (int i = index + count - 1; i >= index; --i)
{
_spans.RemoveAt(i);
}
}
///
/// Insert n elements to vector
///
private void Insert(int index, int count)
{
for (int c = 0; c < count; c++)
_spans.Insert(index, new Span(null, 0));
}
#region Public operation
///
/// Finds the span that contains the specified character position.
///
/// position to find
/// Position of the most recently accessed span (e.g., the current span
/// of a SpanRider) for performance; FindSpan runs in O(1) time if the specified cp is in the same span
/// or an adjacent span.
/// receives the index and first cp of the span that contains the specified
/// position or, if the position is past the end of the vector, the index and cp just past the end of
/// the last span.
/// Returns true if cp is in range or false if not.
internal bool FindSpan(int cp, SpanPosition latestPosition, out SpanPosition spanPosition)
{
Debug.Assert(cp >= 0);
int spanCount = _spans.Count;
int spanIndex, spanCP;
if (cp == 0)
{
// CP zero always corresponds to span index zero
spanIndex = 0;
spanCP = 0;
}
else if (cp >= latestPosition.CP || cp * 2 < latestPosition.CP)
{
// One of the following is true:
// 1. cp is after the latest position (the most recently accessed span)
// 2. cp is closer to zero than to the latest position
if (cp >= latestPosition.CP)
{
// case 1: scan forward from the latest position
spanIndex = latestPosition.Index;
spanCP = latestPosition.CP;
}
else
{
// case 2: scan forward from the start of the span vector
spanIndex = 0;
spanCP = 0;
}
// Scan forward until we find the Span that contains the specified CP or
// reach the end of the SpanVector
for (; spanIndex < spanCount; ++spanIndex)
{
int spanLength = _spans[spanIndex].length;
if (cp < spanCP + spanLength)
{
break;
}
spanCP += spanLength;
}
}
else
{
// The specified CP is before the latest position but closer to it than to zero;
// therefore scan backwards from the latest position
spanIndex = latestPosition.Index;
spanCP = latestPosition.CP;
while (spanCP > cp)
{
Debug.Assert(spanIndex > 0);
spanCP -= _spans[--spanIndex].length;
}
}
// Return index and cp of span in out param.
spanPosition = new SpanPosition(spanIndex, spanCP);
// Return true if the span is in range.
return spanIndex != spanCount;
}
///
/// Set an element as a value to a character range
///
///
/// Implementation of span element object must implement Object.Equals to
/// avoid runtime reflection cost on equality check of nested-type object.
///
public void SetValue(int first, int length, object element)
{
Set(first, length, element, SpanVector._equals, new SpanPosition());
}
///
/// Set an element as a value to a character range; takes a SpanPosition of a recently accessed
/// span for performance and returns a known valid SpanPosition
///
public SpanPosition SetValue(int first, int length, object element, SpanPosition spanPosition)
{
return Set(first, length, element, SpanVector._equals, spanPosition);
}
///
/// Set an element as a reference to a character range
///
public void SetReference(int first, int length, object element)
{
Set(first, length, element, SpanVector._referenceEquals, new SpanPosition());
}
///
/// Set an element as a reference to a character range; takes a SpanPosition of a recently accessed
/// span for performance and returns a known valid SpanPosition
///
public SpanPosition SetReference(int first, int length, object element, SpanPosition spanPosition)
{
return Set(first, length, element, SpanVector._referenceEquals, spanPosition);
}
#endregion
private SpanPosition Set(int first, int length, object element, Equals equals, SpanPosition spanPosition)
{
bool inRange = FindSpan(first, spanPosition, out spanPosition);
// fs = index of first span partly or completely updated
// fc = character index at start of fs
int fs = spanPosition.Index;
int fc = spanPosition.CP;
// Find the span that contains the first affected cp
if (!inRange)
{
// The first cp is past the end of the last span
if (fc < first)
{
// Create default run up to first
Add(new Span(_defaultObject, first - fc));
}
if ( Count > 0
&& equals(_spans[Count-1].element, element))
{
// New Element matches end Element, just extend end Element
_spans[Count - 1].length += length;
// Make sure fs and fc still agree
if (fs == Count)
{
fc += length;
}
}
else
{
Add(new Span(element, length));
}
}
else
{
// Now find the last span affected by the update
int ls = fs;
int lc = fc;
while ( ls < Count
&& lc + _spans[ls].length <= first + length)
{
lc += _spans[ls].length;
ls++;
}
// ls = first span following update to remain unchanged in part or in whole
// lc = character index at start of ls
// expand update region backwards to include existing Spans of identical
// Element type
if (first == fc)
{
// Item at [fs] is completely replaced. Check prior item
if (fs > 0
&& equals(_spans[fs - 1].element, element))
{
// Expand update area over previous run of equal classification
fs--;
fc -= _spans[fs].length;
first = fc;
length += _spans[fs].length;
}
}
else
{
// Item at [fs] is partially replaced. Check if it is same as update
if (equals(_spans[fs].element, element))
{
// Expand update area back to start of first affected equal valued run
length = first + length - fc;
first = fc;
}
}
// Expand update region forwards to include existing Spans of identical
// Element type
if ( ls < Count
&& equals(_spans[ls].element, element))
{
// Extend update region to end of existing split run
length = lc + _spans[ls].length - first;
lc += _spans[ls].length;
ls++;
}
// If no old Spans remain beyond area affected by update, handle easily:
if (ls >= Count)
{
// None of the old span list extended beyond the update region
if (fc < first)
{
// Updated region leaves some of [fs]
if (Count != fs + 2)
{
if (!Resize(fs + 2))
throw new OutOfMemoryException();
}
_spans[fs].length = first - fc;
_spans[fs + 1] = new Span(element, length);
}
else
{
// Updated item replaces [fs]
if (Count != fs + 1)
{
if (!Resize(fs + 1))
throw new OutOfMemoryException();
}
_spans[fs] = new Span(element, length);
}
}
else
{
// Record partial elementtype at end, if any
object trailingElement = null;
int trailingLength = 0;
if (first + length > lc)
{
trailingElement = _spans[ls].element;
trailingLength = lc + _spans[ls].length - (first + length);
}
// Calculate change in number of Spans
int spanDelta = 1 // The new span
+ (first > fc ? 1 : 0) // part span at start
- (ls - fs); // existing affected span count
// Note part span at end doesn't affect the calculation - the run may need
// updating, but it doesn't need creating.
if (spanDelta < 0)
{
DeleteInternal(fs + 1, -spanDelta);
}
else if (spanDelta > 0)
{
Insert(fs + 1, spanDelta);
// Initialize inserted Spans
for (int i = 0; i < spanDelta; i++)
{
_spans[fs + 1 + i] = new Span(null, 0);
}
}
// Assign Element values
// Correct Length of split span before updated range
if (fc < first)
{
_spans[fs].length = first - fc;
fs++;
fc = first;
}
// Record Element type for updated range
_spans[fs] = new Span(element, length);
fs++;
fc += length;
// Correct Length of split span following updated range
if (lc < first + length)
{
_spans[fs] = new Span(trailingElement, trailingLength);
}
}
}
// Return a known valid span position.
return new SpanPosition(fs, fc);
}
#region Properties
///
/// Number of spans in vector
///
public int Count
{
get { return _spans.Count; }
}
///
/// The default element of vector
///
public object Default
{
get { return _defaultObject; }
}
///
/// Span accessor at nth element
///
public Span this[int index]
{
get { return _spans[index]; }
}
#endregion
#region Private members
private bool Resize(int targetCount)
{
if (targetCount > Count)
{
for (int c = 0; c < targetCount - Count; c++)
{
_spans.Add(new Span(null, 0));
}
}
else if (targetCount < Count)
{
DeleteInternal(targetCount, Count - targetCount);
}
return true;
}
static private Equals _referenceEquals = new Equals(Object.ReferenceEquals);
static private Equals _equals = new Equals(Object.Equals);
FrugalStructList _spans;
object _defaultObject;
#endregion
}
///
/// Equality check method
///
internal delegate bool Equals(object first, object second);
///
/// ENUMERATOR: To navigate a vector through its element
///
internal sealed class SpanEnumerator : IEnumerator
{
internal SpanEnumerator(SpanVector spans)
{
_spans = spans;
_current = -1;
}
///
/// The current span
///
public object Current
{
get { return _spans[_current]; }
}
///
/// Move to the next span
///
public bool MoveNext()
{
_current++;
return _current < _spans.Count ? true : false;
}
///
/// Reset the enumerator
///
public void Reset()
{
_current = -1;
}
SpanVector _spans;
int _current; // current span
}
///
/// Represents a Span's position as a pair of related values: its index in the
/// SpanVector its CP offset from the start of the SpanVector.
///
internal struct SpanPosition
{
internal SpanPosition(int spanIndex, int spanCP)
{
_spanIndex = spanIndex;
_spanCP = spanCP;
}
internal int Index
{
get { return _spanIndex; }
}
internal int CP
{
get { return _spanCP; }
}
private int _spanIndex;
private int _spanCP;
}
///
/// RIDER: To navigate a vector through character index
///
internal struct SpanRider
{
public SpanRider(SpanVector spans) : this(spans, new SpanPosition(), 0)
{
}
public SpanRider(SpanVector spans, SpanPosition latestPosition) : this(spans, latestPosition, latestPosition.CP)
{
}
public SpanRider(SpanVector spans, SpanPosition latestPosition, int cp)
{
_spans = spans;
_spanPosition = new SpanPosition();
_cp = 0;
_cch = 0;
At(latestPosition, cp);
}
///
/// Move rider to a given cp
///
public bool At(int cp)
{
return At(_spanPosition, cp);
}
public bool At(SpanPosition latestPosition, int cp)
{
bool inRange = _spans.FindSpan(cp, latestPosition, out _spanPosition);
if (inRange)
{
// cp is in range:
// - Length is the distance to the end of the span
// - CurrentPosition is cp
_cch = _spans[_spanPosition.Index].length - (cp - _spanPosition.CP);
_cp = cp;
}
else
{
// cp is out of range:
// - Length is the default span length
// - CurrentPosition is the end of the last span
_cch = int.MaxValue;
_cp = _spanPosition.CP;
}
return inRange;
}
#region Properties
///
/// The first cp of the current span
///
public int CurrentSpanStart
{
get { return _spanPosition.CP; }
}
///
/// The length of current span start from the current cp
///
public int Length
{
get { return _cch; }
}
///
/// The current position
///
public int CurrentPosition
{
get { return _cp; }
}
///
/// The element of the current span
///
public object CurrentElement
{
get { return _spanPosition.Index >= _spans.Count ? _spans.Default : _spans[_spanPosition.Index].element; }
}
///
/// Index of the span at the current position.
///
public int CurrentSpanIndex
{
get { return _spanPosition.Index; }
}
///
/// Index and first cp of the current span.
///
public SpanPosition SpanPosition
{
get { return _spanPosition; }
}
#endregion
#region Private members
SpanVector _spans; // vector of spans
SpanPosition _spanPosition; // index and cp of current span
int _cp; // current cp (may be greater than start of span)
int _cch; // distance from current cp to end of current span
#endregion
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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