private void ValidateAllFragmentsHasValidValue()
{
if (Fragments.Any(fragment => !fragment.IsValid))
{
ErrorMessages.Add("Message contain one or more hashes with missing number in front.");
}
}
void ValidateAllFragmentsHasValue()
{
if (Fragments.Any(fragment => !fragment.HasValue))
{
_errorMessages.Add("Message contain one or more hashes with missing number in front or after");
}
}
public CSSFragmentSet(IEnumerable <ICSSFragment> fragments)
{
if (fragments == null)
{
throw new ArgumentNullException("fragments");
}
Fragments = fragments.ToList().AsReadOnly();
if (Fragments.Any(f => f == null))
{
throw new ArgumentException("Null reference encountered in fragments set");
}
TotalSelectorCount = GetSelectors(Fragments).Select(s => s.Selectors.Count()).Sum();
}
/// <summary>
/// Called to process key events.
/// </summary>
/// <param name="e">The key event.</param>
public override bool DispatchKeyEvent(KeyEvent e)
{
//
// If we are in the middle of a transition, ignore all keys.
//
if (InFragmentTransition == true)
{
return(true);
}
//
// If we are currently loading a new action then disable everything
// except the Back button.
//
if (LoadingCancellationTokenSource != null)
{
if (e.KeyCode == Keycode.Back)
{
if (!Fragments.Any())
{
return(base.DispatchKeyEvent(e));
}
LoadingCancellationTokenSource.Cancel();
LoadingCancellationTokenSource = null;
HideLoading();
}
return(true);
}
if (Fragments.Any())
{
if (Fragments.Last().DispatchKeyEvent(e))
{
return(true);
}
}
return(base.DispatchKeyEvent(e));
}
/// <summary>
/// Return the items in <param name="items"/> that match this itemspec
/// </summary>
public IEnumerable <I> FilterItems(IEnumerable <I> items)
{
return(items.Where(i => Fragments.Any(f => f.ItemMatches(i.EvaluatedInclude) > 0)));
}
/// <summary>
/// Return true if the given <paramref name="item"/> matches this itemspec
/// </summary>
/// <param name="item">The item to attempt to find a match for.</param>
/// <returns></returns>
public bool MatchesItem(I item)
{
return(Fragments.Any(f => f.MatchCount(item.EvaluatedInclude) > 0));
}
private string GenerateMatch(MatcherEngineGenerator generator)
{
return($@"
public override MatcherResult Match(string code, string fragmentMatcher, bool matchFullText = true)
{{
FragmentMatchData matchData = new FragmentMatchData
{{
StartIndex = 0
}};
{(IndexingMode == IndexingMode.Lazy ? $"Span<int> checkFlags = stackalloc int[{Patterns.Count + 1}];" : null)}
State state = new State()
{{
Code = code{(IndexingMode != IndexingMode.None ? @",
DistinctStringMatches = new List<StringMatchData>(2000)" : null)}{(IndexingMode == IndexingMode.Lazy ? @",
CheckFlags = checkFlags" : null)}{(Fragments.Any(fragment => fragment.Cacheable) ? @",
MatchCache = new Dictionary<ValueTuple<string, int>, FragmentMatchData>()" : null)}{(LogMatches ? $@",
MatchLogBuilder = new StringBuilder()" : null)}
}};
{(IndexingMode == IndexingMode.Eager ? "PreMatchPatterns(ref state);" : null)}
bool success = false;
switch (fragmentMatcher)
{{
{string.Join("\n", Fragments.Where(matcher => !matcher.FallThrough && !matcher.IsNoise).Select(matcher => $@"
case ""{HttpUtility.JavaScriptStringEncode(matcher.Name)}"":
success = {matcher.Generate(generator)};
break;
"))}
}}
IMatchData resultMatchData = matchData.Parts.FirstOrDefault();
int? failureIndex = success ? null : state.FailureIndex;
if (success && matchFullText && state.CurrentIndex != state.Code.Length)
{{
success = false;
failureIndex = state.CurrentIndex;
}}
return new MatcherResult(resultMatchData, success, state.CurrentIndex, failureIndex, state.MatchLogBuilder?.ToString());
}}
public override MatcherResult Match(string code, bool matchFullText = true)
{{
FragmentMatchData matchData = new FragmentMatchData
{{
StartIndex = 0
}};
{(IndexingMode == IndexingMode.Lazy ? $"Span<int> checkFlags = stackalloc int[{Patterns.Count + 1}];" : null)}
State state = new State()
{{
Code = code{(IndexingMode != IndexingMode.None ? @",
DistinctStringMatches = new List<StringMatchData>(2000)" : null)}{(IndexingMode == IndexingMode.Lazy ? @",
CheckFlags = checkFlags" : null)}{(Fragments.Any(fragment => fragment.Cacheable) ? @",
MatchCache = new Dictionary<ValueTuple<string, int>, FragmentMatchData>()" : null)}{(LogMatches ? $@",
MatchLogBuilder = new StringBuilder()" : null)}
}};
{(IndexingMode == IndexingMode.Eager ? "PreMatchPatterns(ref state);" : null)}
bool success = {StartingFragment.Generate(generator)};
IMatchData resultMatchData = matchData?.Parts.FirstOrDefault();
int? failureIndex = success ? null : state.FailureIndex;
if (success && matchFullText && state.CurrentIndex != state.Code.Length)
{{
success = false;
failureIndex = Math.Max(state.FailureIndex ?? 0, state.CurrentIndex);
}}
return new MatcherResult(resultMatchData, success, state.CurrentIndex, failureIndex, state.MatchLogBuilder?.ToString());
}}
{(IndexingMode == IndexingMode.Eager ? $@"private bool PreMatchPatterns(ref State state)
{{
int codeLength = state.Code.Length;
bool success = true;
bool previousNoise = false;
StringMatchData matchData = null;
int currentIndex = 0;
while ((currentIndex = state.CurrentIndex) < codeLength)
{{
success = {string.Join(" ||\n", Patterns.Select(pattern => $@"{string.Format(GenerateMatchPattern(generator, pattern), "matchData", "true", "false")}"))};
if (!success)
{{
break;
}}
else {{
{(generator.LanguageMatcher.LogMatches ? $@"state.MatchLogBuilder.AppendLine($""{{currentIndex}}. Prematched {{matchData.Name}}: {{matchData.Text}}"");" : null)}
if (matchData.IsNoise)
{{
previousNoise = true;
}}
else if (previousNoise)
{{
if (state.DistinctIndex > 1)
{{
StringMatchData previousMatchData = state.DistinctStringMatches[state.DistinctIndex - 2];
if (previousMatchData.Name == matchData.Name && previousMatchData.Mergable)
{{
previousMatchData.Text += matchData.Text;
previousMatchData.Length = state.CurrentIndex - previousMatchData.StartIndex;
state.DistinctIndex--;
state.MaxDistinctIndex--;
state.DistinctStringMatches.RemoveAt(state.DistinctIndex);
}}
}}
previousNoise = false;
}}
}}
}}
state.CurrentIndex = 0;
{(IndexingMode != IndexingMode.None ? "state.DistinctIndex = 0;" : null)}
return success;
}}" : null)}" );
}