/// <summary>
/// Sets the number of occurrences of a context.
/// </summary>
/// <param name="min">The min.</param>
/// <param name="max">The max.</param>
public void SetContextOccurrence(int min, int max)
{
CheckDisposed();
SelectionHelper sel = SelectionHelper.Create(m_view);
int cellId = GetCell(sel);
int hvo = GetItemHvo(sel, SelectionHelper.SelLimitType.Anchor);
IPhPhonContext ctxt = PhPhonContext.CreateFromDBObject(m_cache, hvo);
int index = -1;
using (new UndoRedoTaskHelper(m_cache, MEStrings.ksRegRuleUndoSetOccurrence, MEStrings.ksRegRuleRedoSetOccurrence))
{
if (ctxt.ClassID == PhIterationContext.kclsidPhIterationContext)
{
// if there is an existing iteration context, just update it or remove it if it can occur only once
IPhIterationContext iterCtxt = ctxt as IPhIterationContext;
if (min == 1 && max == 1)
{
index = OverwriteContext(iterCtxt.MemberRA, iterCtxt, cellId == (int)PhSegRuleRHS.PhSegRuleRHSTags.kflidLeftContext, false);
}
else
{
iterCtxt.Minimum = min;
iterCtxt.Maximum = max;
}
}
else if (min != 1 || max != 1)
{
// create a new iteration context
IPhIterationContext iterCtxt = new PhIterationContext();
index = OverwriteContext(iterCtxt, ctxt, cellId == (int)PhSegRuleRHS.PhSegRuleRHSTags.kflidLeftContext, true);
iterCtxt.MemberRAHvo = ctxt.Hvo;
iterCtxt.Minimum = min;
iterCtxt.Maximum = max;
iterCtxt.NotifyNew();
}
}
if (index == -1)
{
IPhPhonContext envCtxt = cellId == (int)PhSegRuleRHS.PhSegRuleRHSTags.kflidLeftContext ? RHS.LeftContextOA : RHS.RightContextOA;
IPhSequenceContext seqCtxt;
index = GetIndex(ctxt, envCtxt, out seqCtxt);
}
ReconstructView(cellId, index, true);
}
/// <summary>
/// Parses the string representation of the specified environment and creates contexts
/// based off of the environment. This is called recursively.
/// </summary>
/// <param name="envStr">The environment string.</param>
/// <param name="leftEnv">if <c>true</c> insert in the left context, otherwise the right context.</param>
/// <param name="iterCtxt">The iteration context to insert into.</param>
void InsertContextsFromEnv(string envStr, int flid, IPhIterationContext iterCtxt)
{
int i = 0;
while (i < envStr.Length)
{
switch (envStr[i])
{
case '#':
IPhSimpleContextBdry bdryCtxt = new PhSimpleContextBdry();
AppendToEnv(bdryCtxt, flid);
bdryCtxt.FeatureStructureRAHvo = m_cache.GetIdFromGuid(LangProject.kguidPhRuleWordBdry);
bdryCtxt.NotifyNew();
i++;
break;
case '[':
int closeBracket = envStr.IndexOf(']', i + 1);
string ncAbbr = envStr.Substring(i + 1, closeBracket - (i + 1));
int redupIndex = ncAbbr.IndexOf('^');
if (redupIndex != -1)
{
ncAbbr = ncAbbr.Substring(0, redupIndex);
}
foreach (IPhNaturalClass nc in m_cache.LangProject.PhonologicalDataOA.NaturalClassesOS)
{
if (nc.Abbreviation.BestAnalysisAlternative.Text == ncAbbr)
{
IPhSimpleContextNC ncCtxt = new PhSimpleContextNC();
if (iterCtxt != null)
{
m_cache.LangProject.PhonologicalDataOA.ContextsOS.Append(ncCtxt);
iterCtxt.MemberRAHvo = ncCtxt.Hvo;
}
else
{
AppendToEnv(ncCtxt, flid);
}
ncCtxt.FeatureStructureRAHvo = nc.Hvo;
ncCtxt.NotifyNew();
break;
}
}
i = closeBracket + 1;
break;
case '(':
int closeParen = envStr.IndexOf(')', i + 1);
string str = envStr.Substring(i + 1, closeParen - (i + 1));
IPhIterationContext newIterCtxt = new PhIterationContext();
AppendToEnv(newIterCtxt, flid);
newIterCtxt.Minimum = 0;
newIterCtxt.Maximum = 1;
InsertContextsFromEnv(str, flid, newIterCtxt);
newIterCtxt.NotifyNew();
i = closeParen + 1;
break;
case ' ':
i++;
break;
default:
int nextIndex = envStr.IndexOfAny(new char[] { '[', ' ', '#', '(' }, i + 1);
if (nextIndex == -1)
{
nextIndex = envStr.Length;
}
int len = nextIndex - i;
while (len > 0)
{
string phonemeStr = envStr.Substring(i, len);
foreach (IPhPhoneme phoneme in m_cache.LangProject.PhonologicalDataOA.PhonemeSetsOS[0].PhonemesOC)
{
foreach (IPhCode code in phoneme.CodesOS)
{
if (code.Representation.BestVernacularAlternative.Text == phonemeStr)
{
IPhSimpleContextSeg segCtxt = new PhSimpleContextSeg();
if (iterCtxt != null)
{
m_cache.LangProject.PhonologicalDataOA.ContextsOS.Append(segCtxt);
iterCtxt.MemberRAHvo = segCtxt.Hvo;
}
else
{
AppendToEnv(segCtxt, flid);
}
segCtxt.FeatureStructureRAHvo = phoneme.Hvo;
segCtxt.NotifyNew();
goto Found;
}
}
}
len--;
}
Found:
if (len == 0)
{
i++;
}
else
{
i += len;
}
break;
}
}
}
