/// <summary>
/// Maps the distribution of an R-group to all possible substitute combinations.
/// </summary>
/// <remarks>
/// This is best illustrated by an example.
/// Say R2 occurs twice in the root, and has condition >0. So a valid
/// output configuration can have either one or two substitutes.
/// The distributions will have been calculated to be the following
/// solutions:
/// <para>[0,1], [1,0], [1,1]</para>
/// To start with [1,1], assume two possible substitutes have been
/// defined for R2, namely *C=O and *C-N. Then the distribution [1,1]
/// should lead to four mappings:
/// <para>[*C=O,*C=O], [*C-N,*C-N], [*C=O,*C-N], [*C-N,*C=O].</para>
/// These mappings are generated in this function, as well as the other valid mappings
/// for [0,1] and [1,0]:
/// <para>[*C=O,null], [*C-N,null], [null,*C=O], [null,*C-N]. </para>
/// So the example would have this function produce eight mappings (result list size==8).
/// </remarks>
/// <param name="rgpList"></param>
/// <param name="listOffset"></param>
/// <param name="distribution"></param>
/// <param name="mapping"></param>
/// <param name="result"></param>
private void MapSubstitutes(RGroupList rgpList, int listOffset, int[] distribution, RGroup[] mapping, List <List <RGroup> > result)
{
if (listOffset == distribution.Length)
{
List <RGroup> mapped = new List <RGroup>();
foreach (var rgrp in mapping)
{
mapped.Add(rgrp);
}
result.Add(mapped);
}
else
{
if (distribution[listOffset] == 0)
{
mapping[listOffset] = null;
MapSubstitutes(rgpList, listOffset + 1, distribution, mapping, result);
}
else
{
foreach (var rgrp in rgpList.RGroups)
{
mapping[listOffset] = rgrp;
MapSubstitutes(rgpList, listOffset + 1, distribution, mapping, result);
}
}
}
}
public void TestOccurrenceNull()
{
RGroupList rgrLst = new RGroupList(1);
rgrLst.Occurrence = null;
Assert.AreEqual(rgrLst.Occurrence, RGroupList.DefaultOccurence);
}
public void TestOccurrenceCorrect()
{
RGroupList rgrLst = new RGroupList(1);
rgrLst.Occurrence = "1, 3-7, 9, >11";
Assert.AreEqual(rgrLst.Occurrence, "1,3-7,9,>11");
}
public void TestOccurrenceNotSmallerThanZero()
{
RGroupList rgrLst = new RGroupList(1);
rgrLst.Occurrence = "<0";
}
public void TestOccurrenceNoNegativeNumber()
{
RGroupList rgrLst = new RGroupList(1);
rgrLst.Occurrence = "-10";
}
public void TestOccurrenceNumericValues()
{
RGroupList rgrLst = new RGroupList(1);
rgrLst.Occurrence = "a,3,10";
}