// "+++ <name>" with optional trailing whitespace
internal virtual bool IsOpeningLine(BlockProcessor blockProcessor)
{
StringSlice line = blockProcessor.Line;
if (line.NextChar() != '+' ||
line.NextChar() != '+' ||
line.NextChar() != ' ')
{
return(false);
}
for (int i = 0; i < _nameLength; i++)
{
if (line.NextChar() != _name[i])
{
return(false);
}
}
// Nothing other than whitespace after the name. A multipart block's name may begin with the name of another
// multipart block, this ensures we don't confuse such blocks.
line.NextChar();
line.TrimEnd();
return(line.CurrentChar == '\0');
}
/// <summary>
/// Extracts content for a <see cref="Row"/>.
/// </summary>
/// <param name="line">The line to extract content from.</param>
/// <param name="targetRow">The <see cref="Row"/> to extract content for.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="targetRow"/> is <c>null</c>.</exception>
protected virtual void ExtractContent(StringSlice line, Row targetRow)
{
if (targetRow == null)
{
throw new ArgumentNullException(nameof(targetRow));
}
int numColumns = targetRow.Count;
int lineStart = line.Start;
for (int columnIndex = 0; columnIndex < numColumns;)
{
Cell targetCell = targetRow[columnIndex];
if (targetCell.IsOpen)
{
// Generate slice for cell
StringSlice cellLine = line;
cellLine.Start = lineStart + targetCell.StartOffset + 1; // Skip '|' or '+', don't trim leading spaces in case we have a block that depends on them
cellLine.End = lineStart + targetCell.EndOffset - 1; // Don't include ending '|' or '+'
cellLine.TrimEnd();
// Add slice to cell
targetCell.Lines.Add(cellLine);
}
columnIndex = targetCell.EndColumnIndex + 1;
}
}
static public void CanTrimEnd()
{
StringSlice firstString = "Trim Me \r";
StringSlice trimmed = firstString.TrimEnd();
Assert.AreEqual("Trim Me", trimmed.ToString());
}
/// <summary>
/// Tries to match partial tag from the current slice
/// </summary>
/// <param name="processor">The processor</param>
/// <param name="slice">The slice</param>
/// <returns>If a match was found</returns>
public override bool Match(Processor processor, ref StringSlice slice)
{
var tagStart = slice.Start - processor.CurrentTags.StartTag.Length;
var index = slice.Start;
while (slice[index].IsWhitespace())
{
index++;
}
var match = slice[index];
if (match == TagId)
{
index++;
while (slice[index].IsWhitespace())
{
index++;
}
slice.Start = index;
var startIndex = slice.Start;
var partialTag = new PartialToken
{
LineIndent = processor.HasSeenNonSpaceOnLine ? 0 : processor.LineIndent,
TagStartPosition = tagStart,
ContentStartPosition = startIndex,
IsClosed = false
};
processor.CurrentToken = partialTag;
while (!slice.IsEmpty && !slice.Match(processor.CurrentTags.EndTag))
{
slice.NextChar();
}
if (slice.IsEmpty)
{
return(false);
}
var content = new StringSlice(slice.Text, startIndex, slice.Start - 1);
content.TrimEnd();
var contentEnd = content.End + 1;
partialTag.ContentEndPosition = contentEnd;
partialTag.TagEndPosition = slice.Start + processor.CurrentTags.EndTag.Length;
partialTag.IsClosed = true;
slice.Start += processor.CurrentTags.EndTag.Length;
return(true);
}
return(false);
}
internal virtual bool LineContainsClosingFence(StringSlice line, int openingFenceCharCount)
{
int numFenceChars = 0;
while (line.CurrentChar == _fenceChar)
{
numFenceChars++;
line.NextChar();
}
line.TrimEnd();
return((_matchingFencesRequired && numFenceChars == openingFenceCharCount ||
!_matchingFencesRequired && numFenceChars >= openingFenceCharCount) && // By default (commonmark specs) closing fence must have as many or more fence chars
line.CurrentChar == '\0'); // No trailing characters other than whitespace
}
// "+++" with optional trailing whitespace
internal virtual bool IsPartDividerLine(BlockProcessor blockProcessor)
{
StringSlice line = blockProcessor.Line;
if (line.CurrentChar != '+' ||
line.NextChar() != '+' ||
line.NextChar() != '+')
{
return(false);
}
// Nothing other than whitespace after "+++"
line.NextChar();
line.TrimEnd();
return(line.CurrentChar == '\0');
}
internal virtual bool LineContainsOpeningFence(StringSlice line, out int numFenceChars)
{
numFenceChars = 0;
char currentChar = line.CurrentChar;
while (currentChar == _fenceChar)
{
numFenceChars++;
currentChar = line.NextChar();
}
if (numFenceChars < 3)
{
return(false); // Line must have at least 3 chars. Indices, so (end - start + 1) < 3
}
if (_fenceTrailingCharacters == FenceTrailingCharacters.All || currentChar == '\0')
{
return(true);
}
if (_fenceTrailingCharacters == FenceTrailingCharacters.Whitespace)
{
line.TrimEnd();
return(line.CurrentChar == '\0');
}
if (_fenceTrailingCharacters == FenceTrailingCharacters.AllButFenceCharacter)
{
currentChar = line.NextChar();
while (currentChar != '\0')
{
if (currentChar == _fenceChar)
{
return(false);
}
currentChar = line.NextChar();
}
}
return(true);
}
public override bool Match(Processor processor, ref StringSlice slice)
{
if (processor is null)
{
throw new System.ArgumentNullException(nameof(processor));
}
var tagStart = slice.Start - processor.CurrentTags.StartTag.Length;
var index = slice.Start;
while (slice[index].IsWhitespace())
{
index++;
}
var nameStart = index;
// Skip whitespace or until end tag
while (!slice[index].IsWhitespace() && !slice.Match(processor.CurrentTags.EndTag, index - slice.Start))
{
index++;
}
var name = slice.ToString(nameStart, index);
// Skip whitespace or until end tag
while (slice[index].IsWhitespace() && !slice.Match(processor.CurrentTags.EndTag, index - slice.Start))
{
index++;
}
if (!_helperMap.TryGetValue(name, out var helperRef))
{
return(false);
}
int contentEnd;
var argsList = ImmutableArray <HelperArgument> .Empty;
if (helperRef.ArgumentTypes.Length > 1)
{
var argsStart = index;
slice.Start = index;
while (!slice.IsEmpty && !slice.Match(processor.CurrentTags.EndTag))
{
slice.NextChar();
}
var args = new StringSlice(slice.Text, argsStart, slice.Start - 1);
args.TrimEnd();
contentEnd = args.End + 1;
argsList = ParseArguments(new StringSlice(args.Text, args.Start, args.End));
}
else
{
while (!slice.IsEmpty && !slice.Match(processor.CurrentTags.EndTag))
{
slice.NextChar();
}
contentEnd = slice.Start;
}
if (!slice.Match(processor.CurrentTags.EndTag))
{
throw new StubbleException($"Unclosed Tag at {slice.Start.ToString(CultureInfo.InvariantCulture)}");
}
var tag = new HelperToken
{
TagStartPosition = tagStart,
ContentStartPosition = nameStart,
Name = name,
Args = argsList,
ContentEndPosition = contentEnd,
TagEndPosition = slice.Start + processor.CurrentTags.EndTag.Length,
IsClosed = true
};
slice.Start += processor.CurrentTags.EndTag.Length;
processor.CurrentToken = tag;
processor.HasSeenNonSpaceOnLine = true;
return(true);
}
/// <summary>
/// Tries to match interpolation tags from the current slice
/// </summary>
/// <param name="processor">The processor</param>
/// <param name="slice">The slice</param>
/// <returns>If the match was successful</returns>
public override bool Match(Processor processor, ref StringSlice slice)
{
var tagStart = slice.Start - processor.CurrentTags.StartTag.Length;
var index = slice.Start;
var escapeResult = true;
var isTripleMustache = false;
while (slice[index].IsWhitespace())
{
index++;
}
var match = slice[index];
if (match == '&')
{
escapeResult = false;
index++;
}
else if (match == '{')
{
escapeResult = false;
isTripleMustache = true;
index++;
}
while (slice[index].IsWhitespace())
{
index++;
}
slice.Start = index;
var startIndex = index;
var endTag = isTripleMustache ? '}' + processor.CurrentTags.EndTag : processor.CurrentTags.EndTag;
while (!slice.IsEmpty && !slice.Match(endTag))
{
slice.NextChar();
}
var content = new StringSlice(slice.Text, startIndex, slice.Start - 1);
content.TrimEnd();
var contentEnd = content.End + 1;
var tag = new InterpolationToken
{
EscapeResult = escapeResult,
TagStartPosition = tagStart,
ContentStartPosition = startIndex,
IsClosed = true
};
if (!slice.Match(endTag))
{
throw new StubbleException($"Unclosed Tag at {slice.Start.ToString()}");
}
tag.ContentEndPosition = contentEnd;
tag.TagEndPosition = slice.Start + endTag.Length;
slice.Start += endTag.Length;
processor.CurrentToken = tag;
processor.HasSeenNonSpaceOnLine = true;
return(true);
}
/// <summary>
/// Tries to match delimiter tags from the current slice
/// </summary>
/// <param name="processor">The processor</param>
/// <param name="slice">The slice</param>
/// <returns>If the match was successful</returns>
public override bool Match(Processor processor, ref StringSlice slice)
{
var tagStart = slice.Start - processor.CurrentTags.StartTag.Length;
var index = slice.Start;
while (slice[index].IsWhitespace())
{
index++;
}
var match = slice[index];
if (match == openingTagDelimiter[0])
{
index++;
while (slice[index].IsWhitespace())
{
index++;
}
slice.Start = index;
var startIndex = slice.Start;
// Take Characters that aren't whitespace
while (!slice.CurrentChar.IsWhitespace())
{
slice.NextChar();
}
var startTag = slice.ToString(startIndex, slice.Start);
// Skip Whitespace any
while (slice.CurrentChar.IsWhitespace())
{
slice.NextChar();
}
var endTagStartIndex = slice.Start;
// Take characters until end delimiter;
var closingTag = closingTagDelimiter[0] + processor.CurrentTags.EndTag;
while (!slice.IsEmpty && !slice.Match(closingTag))
{
slice.NextChar();
}
var endTag = new StringSlice(slice.Text, endTagStartIndex, slice.Start - 1);
endTag.TrimEnd();
var contentEnd = endTag.End + 1;
var tag = new DelimiterToken
{
TagStartPosition = tagStart,
ContentStartPosition = startIndex,
ContentEndPosition = contentEnd,
TagEndPosition = slice.Start + closingTag.Length,
StartTag = startTag,
EndTag = endTag.ToString(),
IsClosed = true
};
processor.CurrentToken = tag;
processor.CurrentTags = new Classes.Tags(tag.StartTag, tag.EndTag);
slice.Start += closingTag.Length;
return(true);
}
return(false);
}
