public AnalysisResult Analyse(char currentCharacter, char?previousCharacter)
{
// If there is no more content to process then this must be a marker insertion point since we're in a declaration header (2017-06-09 DWR: The first content
// may be a @font-face declaration so check _declarationHeaderTerminators_NonMarkerInserting first since we're not ALWAYS going to want a marker here)
if (previousCharacter == null)
{
if (_declarationHeaderTerminators_NonMarkerInserting.Contains(currentCharacter))
{
return(AnalysisResult.NoInsertion(new StandardContentAnalyser()));
}
return(AnalysisResult.InsertBeforeCurrentCharacter(_declarationHeaderLineNumberOffset, new StandardContentAnalyser()));
}
if (_declarationHeaderTerminators_MarkerInserting.Contains(currentCharacter))
{
// This terminator indicate the end of the header and suggests a return back to standard content (ie. not a header / css selector)
return(AnalysisResult.InsertAfterCurrentCharacter(_declarationHeaderLineNumberOffset, new StandardContentAnalyser()));
}
else if (_declarationHeaderTerminators_NonMarkerInserting.Contains(currentCharacter))
{
// This terminator indicates that we weren't in a css selector at all (so no marker will be generated)
return(AnalysisResult.NoInsertion(new StandardContentAnalyser()));
}
else if (_declarationHeaderTerminators_Reset.Contains(currentCharacter))
{
// If we hit a reset terminator then the current content (if any) should result in a marker being generated, as may the following content (eg. this
// marker could be for a selector nested inside another)
return(AnalysisResult.InsertAfterCurrentCharacter(_declarationHeaderLineNumberOffset, new DeclarationHeaderAnalyser()));
}
// If we've encountered a line break then we'll need to add one the marker line number offset - if there's loads of new lines between a declaration header
// and the preceding content, the line number indicated in the marker should point to a line that includes part of the declaration header rather than
// being the end of the new line / whitespace content from the content before it. This offset is only incremented if some non-whitespace content has
// been encountered in the declaration header, so we indicate a class name rather than open bracket (when they're not on the same line), for example
if ((currentCharacter == '\n') && _encounteredNonWhiteSpaceDeclarationContent)
{
return(AnalysisResult.NoInsertion(new DeclarationHeaderAnalyser(_declarationHeaderLineNumberOffset + 1, true)));
}
return(AnalysisResult.NoInsertion(
new DeclarationHeaderAnalyser(
_declarationHeaderLineNumberOffset,
_encounteredNonWhiteSpaceDeclarationContent || !char.IsWhiteSpace(currentCharacter)
)
));
}
