private static IList <AbstractHead> CreateSimpleHeads(string patternPart, char?invalidWildgetCharacter
)
{
IList <AbstractHead> heads = new AList <AbstractHead>(patternPart.Length);
for (int i = 0; i < patternPart.Length; i++)
{
char c = patternPart[i];
switch (c)
{
case '*':
{
AbstractHead head = CreateWildCardHead(invalidWildgetCharacter, true);
heads.AddItem(head);
break;
}
case '?':
{
AbstractHead head = CreateWildCardHead(invalidWildgetCharacter, false);
heads.AddItem(head);
break;
}
default:
{
CharacterHead head_1 = new CharacterHead(c);
heads.AddItem(head_1);
break;
}
}
}
return(heads);
}
/// <exception cref="NGit.Errors.InvalidPatternException"></exception>
private static IList <Head> CreateHeadsStartValues(string patternString, char?invalidWildgetCharacter
)
{
IList <AbstractHead> allHeads = ParseHeads(patternString, invalidWildgetCharacter);
IList <Head> nextHeadsSuggestion = new AList <Head>(2);
nextHeadsSuggestion.AddItem(LastHead.INSTANCE);
for (int i = allHeads.Count - 1; i >= 0; i--)
{
AbstractHead head = allHeads[i];
// explanation:
// a and * of the pattern "a*b"
// need *b as newHeads
// that's why * extends the list for it self and it's left neighbor.
if (head.IsStar())
{
nextHeadsSuggestion.AddItem(head);
head.SetNewHeads(nextHeadsSuggestion);
}
else
{
head.SetNewHeads(nextHeadsSuggestion);
nextHeadsSuggestion = new AList <Head>(2);
nextHeadsSuggestion.AddItem(head);
}
}
return(nextHeadsSuggestion);
}
