private Pronounceable GetPronounceableAt()

in src/cs/Microsoft.PhoneticMatching/Matchers/FuzzyMatcher/AbstractFuzzyMatcher.cs [321:365]
36 lines of code
8 McCabe index (conditional complexity)

        private Pronounceable GetPronounceableAt(int idx)
        {
            Pronounceable pronounceable;
            if (idx == -1)
            {
                pronounceable = this.currentQuery;
            }
            else
            {
                if (idx >= this.targets.Count)
                {
                    throw new ArgumentOutOfRangeException(string.Format("index is out of bound : idx={0} - targets.Count={1}", idx, this.targets.Count));
                }

                // lazy initialize this.pronounceables[idx]
                if (this.pronounceables[idx] == null)
                {
                    // lazy initialize this.extractions[idx]
                    if (this.extractions[idx] == null)
                    {
                        if (this.targetToExtraction == null)
                        {
                            throw new InvalidOperationException(string.Format("Conversion delegate is required to retrieve extraction from Target type [{0}] to Extraction type [{1}].", typeof(Target), typeof(Extraction)));
                        }

                        this.extractions[idx] = this.targetToExtraction(this.targets[idx]);
                    }

                    // check if extraction and pronounceable points to the same object
                    if (this.pronounceables[idx] == null)
                    {
                        if (this.extractionToPronounceable == null)
                        {
                            throw new InvalidOperationException(string.Format("Conversion delegate is required to retrieve extraction from Target type [{0}] to Extraction type [{1}].", typeof(Extraction), typeof(Pronounceable)));
                        }

                        this.pronounceables[idx] = this.extractionToPronounceable(this.extractions[idx]);
                    }
                }

                pronounceable = this.pronounceables[idx];
            }

            return pronounceable;
        }