private void DetermineTypes(BidiChain chain)
{
CharType type = CharType.Nil;
UnicodeLocator locator = new UnicodeLocator();
UnicodeAgent agent = locator.Agent;
locator.LoadString(_text);
while (locator.MoveNext())
{
CharType priorType = type;
_types[agent.index] = type = CharTypeLookup.DetermineCharType(agent.unicode);
switch (type)
{
case CharType.ON:
case CharType.LRI:
case CharType.RLI:
case CharType.FSI:
case CharType.PDI:
case CharType.LRE:
case CharType.RLE:
case CharType.LRO:
case CharType.RLO:
case CharType.PDF:
AddConsecutiveLink(chain, type, agent.index);
break;
default:
if (priorType != type)
{
AddConsecutiveLink(chain, type, agent.index);
}
break;
}
if (agent.length == 2)
{
_types[agent.index + 1] = CharType.BN;
if (priorType != CharType.BN)
{
AddConsecutiveLink(chain, CharType.BN, agent.index + 1);
}
}
}
AddConsecutiveLink(chain, CharType.Nil, _text.Length);
}
public UnicodeLocator()
{
_agent = new UnicodeAgent();
Reset();
}