private void InitializeBodyTag()
{
if (this.bodyTagInfo != null)
{
return;
}
int num = 0;
uint num2 = 0U;
int num3 = 0;
int startWordIndex = base.StartWordIndex;
int endWordIndex = base.EndWordIndex;
for (int i = startWordIndex; i < endWordIndex; i++)
{
uint num4;
if (BodyFragmentInfo.IsUsefulWord(base.BodyScanner.Words[i], out num4))
{
int num5 = num % 32;
if (num5 == 0)
{
num2 ^= num4;
}
else
{
num2 ^= (num4 << num5) + (num4 >> 32 - num5);
}
num++;
}
}
if (base.StartLineIndex < base.EndLineIndex)
{
num3 = BodyFragmentInfo.GetFormatCrc(base.BodyScanner.FormatStore, base.BodyScanner.Lines[base.StartLineIndex].Node);
if (base.BodyScanner.Words.Count > 0 && startWordIndex < base.BodyScanner.Words.Count)
{
num3 ^= BodyFragmentInfo.GetInlineObjectCount(base.BodyScanner.FormatStore.GetTextRun(base.BodyScanner.Lines[base.StartLineIndex].TextPosition), (base.EndLineIndex == base.BodyScanner.Lines.Count) ? null : new TextRun?(base.BodyScanner.FormatStore.GetTextRun(base.BodyScanner.Lines[base.EndLineIndex].TextPosition)));
}
}
this.bodyTagInfo = new BodyTagInfo(num, (int)num2, num3);
}
private BodyFragmentInfo GetParentBodyPart(BodyTagInfo parentBodyTagInfo)
{
if (parentBodyTagInfo.WordCount == 0 && parentBodyTagInfo.FormatCrc == 0)
{
return new BodyFragmentInfo(base.BodyScanner, base.EndLineIndex, base.EndLineIndex);
}
int i = base.EndLineIndex;
int num = base.EndLineIndex;
int num2 = base.GetFirstWordIndex(i);
int num3 = num2;
int num4 = 0;
uint num5 = 0U;
while (num3 >= base.StartWordIndex && i >= base.StartLineIndex)
{
if (num4 == parentBodyTagInfo.WordCount && num5 == (uint)parentBodyTagInfo.WordCrc)
{
while (i > 0)
{
int num6 = base.GetFirstWordIndex(i - 1);
uint num7 = 0U;
while (num6 < num2 && !BodyFragmentInfo.IsUsefulWord(base.BodyScanner.Words[num6], out num7))
{
num6++;
}
if (num6 != num2)
{
break;
}
i--;
num2 = base.GetFirstWordIndex(i);
}
FragmentInfo.TrimBoundary(base.BodyScanner, ref i, ref num);
return new BodyFragmentInfo(base.BodyScanner, i, num);
}
if (num4 <= parentBodyTagInfo.WordCount)
{
if (i == 0)
{
break;
}
int j = base.GetFirstWordIndex(--i);
while (j < num2)
{
if (base.StartWordIndex >= num2)
{
break;
}
uint num8 = 0U;
num2--;
if (BodyFragmentInfo.IsUsefulWord(base.BodyScanner.Words[num2], out num8))
{
num4++;
num5 = (num5 << 1) + (num5 >> 31);
num5 ^= num8;
}
}
}
else if (num4 > parentBodyTagInfo.WordCount)
{
int k = base.GetFirstWordIndex(--num);
while (k < num3)
{
num3--;
uint num9;
if (BodyFragmentInfo.IsUsefulWord(base.BodyScanner.Words[num3], out num9))
{
num4--;
int num10 = num4 % 32;
if (num10 == 0)
{
num5 ^= num9;
}
else
{
num5 ^= (num9 << num10) + (num9 >> 32 - num10);
}
}
}
}
}
return null;
}