public void TrimSpan()

in vsintegration/src/FSharp.LanguageService.Base/Source.cs [1128:1179]
48 lines of code
15 McCabe index (conditional complexity)

        public void TrimSpan(ref TextSpan span)
        {
            // Scan forwards past whitepsace.
            int length;
            NativeMethods.ThrowOnFailure(this.textLines.GetLengthOfLine(span.iStartLine, out length));

            while (span.iStartLine < span.iEndLine || (span.iStartLine == span.iEndLine && span.iStartIndex < span.iEndIndex))
            {
                string text = this.GetText(span.iStartLine, 0, span.iStartLine, length);
                for (int i = span.iStartIndex; i < length; i++)
                {
                    char ch = text[i];
                    if (ch != ' ' && ch != '\t')
                        break;
                    span.iStartIndex++;
                }
                if (span.iStartIndex >= length)
                {
                    span.iStartIndex = 0;
                    span.iStartLine++;
                    NativeMethods.ThrowOnFailure(this.textLines.GetLengthOfLine(span.iStartLine, out length));
                }
                else
                {
                    break;
                }
            }
            // Scan backwards past whitepsace.
            NativeMethods.ThrowOnFailure(this.textLines.GetLengthOfLine(span.iEndLine, out length));

            while (span.iStartLine < span.iEndLine || (span.iStartLine == span.iEndLine && span.iStartIndex < span.iEndIndex))
            {
                string text = GetText(span.iEndLine, 0, span.iEndLine, length);
                for (int i = span.iEndIndex - 1; i >= 0; i--)
                {
                    char ch = text[i];
                    if (ch != ' ' && ch != '\t')
                        break;
                    span.iEndIndex--;
                }
                if (span.iEndIndex <= 0)
                {
                    span.iEndLine--;
                    NativeMethods.ThrowOnFailure(this.textLines.GetLengthOfLine(span.iEndLine, out length));
                    span.iEndIndex = length;
                }
                else
                {
                    break;
                }
            }
        }