/// <summary>Returns a list of all related <see cref="HostfileLine"/> objects that are part of the same multiline comment; if the specified <paramref name="line"/> is a multiline comment.</summary>
/// <param name="line">The <see cref="HostfileLine"/> which is a member of a multiline comment.</param>
/// <returns>A <see cref="List{HostfileLine}"/> of all related <see cref="HostfileLine"/> objects that are part of the same multiline comment; if the specified <paramref name="line"/> is a multiline comment.</returns>
private List <HostfileLine> GetAllRelatedComments(HostfileLine line)
{
if (line == null)
{
return(null);
}
/* navigate to the beginning of the multi-line comment */
while (line.Previous != null && line.Previous.IsMultiLineComment)
{
line = line.Previous;
}
int currentLineNumber = line.LineNumber;
int nextNonMultiLineCommentLineNumber = this.LineByLineNavigator.Count;
HostfileLine nextNonMultiLineComment = this.LineByLineNavigator.Where(l => l.LineNumber > currentLineNumber && l.IsMultiLineComment == false).FirstOrDefault();
if (nextNonMultiLineComment != null)
{
nextNonMultiLineCommentLineNumber = nextNonMultiLineComment.LineNumber;
}
List <HostfileLine> comments =
this.LineByLineNavigator.Where(
l =>
l.LineNumber >= currentLineNumber && l.LineNumber < nextNonMultiLineCommentLineNumber &&
l.IsMultiLineComment).ToList();
return(comments);
}
/// <summary>Return the parent <see cref="HostfileLine"/> which marks the group-start for the specified <paramref name="line"/>; if the specified <paramref name="line"/> is part of a group.</summary>
/// <param name="line">The <see cref="HostfileLine"/> object that is part of group.</param>
/// <returns>The parent <see cref="HostfileLine"/> which marks the group-start for the specified <paramref name="line"/>; if the specified <paramref name="line"/> is part of a group. Otherwise null.</returns>
private static HostfileLine GetParentHostGroup(HostfileLine line)
{
bool isAGroupControlElement = line.IsGroupStart || line.IsGroupEnd;
if (isAGroupControlElement == false)
{
while ((line = line.Previous) != null)
{
if (line.IsGroupEnd)
{
return(null);
}
if (line.IsGroupStart)
{
return(line);
}
}
}
else
{
return(line);
}
return(null);
}
/// <summary>Returns the text of a multiline comment if the specified <paramref name="line"/> is part of a multiline comment.</summary>
/// <param name="line">The <see cref="HostfileLine"/> which is a member of a multiline comment.</param>
/// <returns>The text of a multiline comment if the specified <paramref name="line"/> is part of a multiline comment; otherwise null.</returns>
private string GetMultiLineCommentText(HostfileLine line)
{
List <HostfileLine> relatedComments = this.GetAllRelatedComments(line);
if (relatedComments != null && relatedComments.Count > 0)
{
return(relatedComments.Select(l => l.Values.FirstOrDefault()).Aggregate((l1, l2) => string.Concat(l1, Environment.NewLine, l2)));
}
return(null);
}
/// <summary>Returns the text of a multiline comment if the specified <paramref name="line"/> is part of a multiline comment.</summary>
/// <param name="line">The <see cref="HostfileLine"/> which is a member of a multiline comment.</param>
/// <returns>The text of a multiline comment if the specified <paramref name="line"/> is part of a multiline comment; otherwise null.</returns>
private string GetMultiLineCommentText(HostfileLine line)
{
List<HostfileLine> relatedComments = this.GetAllRelatedComments(line);
if (relatedComments != null && relatedComments.Count > 0)
{
return relatedComments.Select(l => l.Values.FirstOrDefault()).Aggregate((l1, l2) => string.Concat(l1, Environment.NewLine, l2));
}
return null;
}
/// <summary>Returns a list of all related <see cref="HostfileLine"/> objects that are part of the same multiline comment; if the specified <paramref name="line"/> is a multiline comment.</summary>
/// <param name="line">The <see cref="HostfileLine"/> which is a member of a multiline comment.</param>
/// <returns>A <see cref="List{HostfileLine}"/> of all related <see cref="HostfileLine"/> objects that are part of the same multiline comment; if the specified <paramref name="line"/> is a multiline comment.</returns>
private List<HostfileLine> GetAllRelatedComments(HostfileLine line)
{
if (line == null)
{
return null;
}
/* navigate to the beginning of the multi-line comment */
while (line.Previous != null && line.Previous.IsMultiLineComment)
{
line = line.Previous;
}
int currentLineNumber = line.LineNumber;
int nextNonMultiLineCommentLineNumber = this.LineByLineNavigator.Count;
HostfileLine nextNonMultiLineComment = this.LineByLineNavigator.Where(l => l.LineNumber > currentLineNumber && l.IsMultiLineComment == false).FirstOrDefault();
if (nextNonMultiLineComment != null)
{
nextNonMultiLineCommentLineNumber = nextNonMultiLineComment.LineNumber;
}
List<HostfileLine> comments =
this.LineByLineNavigator.Where(
l =>
l.LineNumber >= currentLineNumber && l.LineNumber < nextNonMultiLineCommentLineNumber &&
l.IsMultiLineComment).ToList();
return comments;
}
/// <summary>Return the parent <see cref="HostfileLine"/> which marks the group-start for the specified <paramref name="line"/>; if the specified <paramref name="line"/> is part of a group.</summary>
/// <param name="line">The <see cref="HostfileLine"/> object that is part of group.</param>
/// <returns>The parent <see cref="HostfileLine"/> which marks the group-start for the specified <paramref name="line"/>; if the specified <paramref name="line"/> is part of a group. Otherwise null.</returns>
private static HostfileLine GetParentHostGroup(HostfileLine line)
{
bool isAGroupControlElement = line.IsGroupStart || line.IsGroupEnd;
if (isAGroupControlElement == false)
{
while ((line = line.Previous) != null)
{
if (line.IsGroupEnd)
{
return null;
}
if (line.IsGroupStart)
{
return line;
}
}
}
else
{
return line;
}
return null;
}