public AllLowerCamelCaseMatcher(bool includeMatchedSpans, string candidate, StringBreaks candidateHumps, TextChunk patternChunk)
{
_includeMatchedSpans = includeMatchedSpans;
_candidate = candidate;
_candidateHumps = candidateHumps;
_patternChunk = patternChunk;
_patternText = _patternChunk.Text;
}
public TextChunk(string text, bool allowFuzzingMatching)
{
this.Text = text;
this.CharacterSpans = StringBreaker.BreakIntoCharacterParts(text);
this.SimilarityChecker = allowFuzzingMatching
? WordSimilarityChecker.Allocate(text, substringsAreSimilar: false)
: null;
}
private PatternMatchKind?TryAllLowerCamelCaseMatch(
string candidate,
StringBreaks candidateParts,
TextChunk patternChunk,
out ImmutableArray <TextSpan> matchedSpans,
int chunkOffset)
{
var matcher = new AllLowerCamelCaseMatcher(_includeMatchedSpans, candidate, candidateParts, patternChunk);
return(matcher.TryMatch(chunkOffset, out matchedSpans));
}
private PatternMatchKind?TryUpperCaseCamelCaseMatch(
string candidate,
StringBreaks candidateHumps,
TextChunk patternChunk,
CompareOptions compareOption,
out ImmutableArray <TextSpan> matchedSpans,
int chunkOffset)
{
var patternHumps = patternChunk.CharacterSpans;
// Note: we may have more pattern parts than candidate parts. This is because multiple
// pattern parts may match a candidate part. For example "SiUI" against "SimpleUI".
// We'll have 3 pattern parts Si/U/I against two candidate parts Simple/UI. However, U
// and I will both match in UI.
int currentCandidateHump = 0;
int currentPatternHump = 0;
int? firstMatch = null;
int? lastMatch = null;
bool?contiguous = null;
var patternHumpCount = patternHumps.GetCount();
var candidateHumpCount = candidateHumps.GetCount();
var matchSpans = ArrayBuilder <TextSpan> .GetInstance();
while (true)
{
// Let's consider our termination cases
if (currentPatternHump == patternHumpCount)
{
Contract.Requires(firstMatch.HasValue);
Contract.Requires(contiguous.HasValue);
var matchCount = matchSpans.Count;
matchedSpans = _includeMatchedSpans
? new NormalizedSpanCollection(matchSpans).ToImmutableArray()
: ImmutableArray <TextSpan> .Empty;
matchSpans.Free();
var camelCaseResult = new CamelCaseResult(
fromStart: firstMatch == 0,
contiguous: contiguous.Value,
toEnd: lastMatch == candidateHumpCount - 1,
matchCount: matchCount,
matchedSpansInReverse: null,
chunkOffset: chunkOffset
);
return(GetCamelCaseKind(camelCaseResult));
}
else if (currentCandidateHump == candidateHumpCount)
{
// No match, since we still have more of the pattern to hit
matchedSpans = ImmutableArray <TextSpan> .Empty;
matchSpans.Free();
return(null);
}
var candidateHump = candidateHumps[currentCandidateHump];
bool gotOneMatchThisCandidate = false;
// Consider the case of matching SiUI against SimpleUIElement. The candidate parts
// will be Simple/UI/Element, and the pattern parts will be Si/U/I. We'll match 'Si'
// against 'Simple' first. Then we'll match 'U' against 'UI'. However, we want to
// still keep matching pattern parts against that candidate part.
for (; currentPatternHump < patternHumpCount; currentPatternHump++)
{
var patternChunkCharacterSpan = patternHumps[currentPatternHump];
if (gotOneMatchThisCandidate)
{
// We've already gotten one pattern part match in this candidate. We will
// only continue trying to consume pattern parts if the last part and this
// part are both upper case.
if (!char.IsUpper(patternChunk.Text[patternHumps[currentPatternHump - 1].Start]) ||
!char.IsUpper(patternChunk.Text[patternHumps[currentPatternHump].Start]))
{
break;
}
}
if (!PartStartsWith(candidate, candidateHump, patternChunk.Text, patternChunkCharacterSpan, compareOption))
{
break;
}
matchSpans.Add(new TextSpan(chunkOffset + candidateHump.Start, patternChunkCharacterSpan.Length));
gotOneMatchThisCandidate = true;
firstMatch = firstMatch ?? currentCandidateHump;
lastMatch = currentCandidateHump;
// If we were contiguous, then keep that value. If we weren't, then keep that
// value. If we don't know, then set the value to 'true' as an initial match is
// obviously contiguous.
contiguous = contiguous ?? true;
candidateHump = new TextSpan(candidateHump.Start + patternChunkCharacterSpan.Length, candidateHump.Length - patternChunkCharacterSpan.Length);
}
// Check if we matched anything at all. If we didn't, then we need to unset the
// contiguous bit if we currently had it set.
// If we haven't set the bit yet, then that means we haven't matched anything so
// far, and we don't want to change that.
if (!gotOneMatchThisCandidate && contiguous.HasValue)
{
contiguous = false;
}
// Move onto the next candidate.
currentCandidateHump++;
}
}
/// <summary> /// Breaks an identifier string into constituent parts. /// </summary> public static StringBreaks BreakIntoWordParts(string identifier) => StringBreaks.Create(identifier, s_wordPartsGenerator);
/// <summary> /// Breaks an identifier string into constituent parts. /// </summary> public static StringBreaks BreakIntoCharacterParts(string identifier) => StringBreaks.Create(identifier, s_characterPartsGenerator);