public static double ScoreExactMatch(string subject, string subjectLw, string query, string queryLw, int pos, int n, int m)
{
var start = ScorerUtil.IsWordStart(pos, subject, subjectLw);
if (!start)
{
var pos2 = subjectLw.IndexOf(queryLw, pos + 1);
if (pos2 > -1)
{
start = ScorerUtil.IsWordStart(pos2, subject, subjectLw);
if (start)
{
pos = pos2;
}
}
}
var i = -1;
var sameCase = 0;
while (++i < n)
{
if ((query.Length > (pos + i) && subject.Length > i) && (query[pos + i] == subject[i]))
{
sameCase++;
}
}
var end = ScorerUtil.IsWordEnd(pos + n - 1, subject, subjectLw, m);
return(ScoreExact(n, m, ScorePattern(n, n, sameCase, start, end), pos));
}
public static double ComputeScore(string subject, string subjectLw, StringScorerQuery preparedQuery)
{
var query = preparedQuery.Query;
var queryLw = preparedQuery.QueryLw;
var score = 0.0;
var m = subject.Length;
var n = query.Length;
var acro = AcronymResult.ScoreAcronyms(subject, subjectLw, query, queryLw);
var acroScore = acro.Score;
if (acro.Count == n)
{
return(Scorer.ScoreExact(n, m, acroScore, acro.Pos));
}
var pos = subjectLw.IndexOf(queryLw);
if (pos > -1)
{
return(ScoreExactMatch(subject, subjectLw, query, queryLw, pos, n, m));
}
var scoreRow = new double[n];
var cscRow = new double[n];
var sz = Scorer.ScoreSize(n, m);
var missBudget = Math.Ceiling(CONST_MISS_COEFF * n) + 5;
var missLeft = missBudget;
var cscShouldRebuild = true;
var j = -1;
while (++j < n)
{
scoreRow[j] = 0;
cscRow[j] = 0;
}
var i = -1;
while (++i < m)
{
var siLW = subjectLw[i];
if (!preparedQuery.CharCodes.Contains(siLW))
{
if (cscShouldRebuild)
{
j = -1;
while (++j < n)
{
cscRow[j] = 0;
}
cscShouldRebuild = false;
}
continue;
}
score = 0.0;
var scoreDiag = 0.0;
var cscDiag = 0.0;
var recordMiss = true;
cscShouldRebuild = true;
j = -1;
while (++j < n)
{
var scoreUp = scoreRow[j];
if (scoreUp > score)
{
score = scoreUp;
}
var cscScore = 0.0;
if (queryLw[j] == siLW)
{
var start = ScorerUtil.IsWordStart(i, subject, subjectLw);
if (cscDiag > 0)
{
cscScore = cscDiag;
}
else
{
cscScore = Scorer.ScoreConsecutives(subject, subjectLw, query, queryLw, i, j, start);
}
var align = scoreDiag + Scorer.ScoreCharacter(i, j, start, acroScore, cscScore);
if (align > score)
{
score = align;
missLeft = missBudget;
}
else
{
if (recordMiss && --missLeft <= 0)
{
return(Math.Max(score, scoreRow[n - 1]) * sz);
}
else
{
recordMiss = false;
}
}
}
scoreDiag = scoreUp;
cscDiag = cscRow[j];
cscRow[j] = cscScore;
scoreRow[j] = score;
}
}
score = scoreRow[n - 1];
return(score * sz);
}
