public override BlockState TryOpen(BlockProcessor processor)
{
var paragraphBlock = processor.LastBlock as ParagraphBlock;
if (processor.IsCodeIndent || paragraphBlock == null || paragraphBlock.LastLine - processor.LineIndex > 1)
{
return(BlockState.None);
}
var startPosition = processor.Start;
var column = processor.ColumnBeforeIndent;
processor.NextChar();
processor.ParseIndent();
var delta = processor.Column - column;
// We expect to have a least
if (delta < 4)
{
// Return back to original position
processor.GoToColumn(column);
return(BlockState.None);
}
if (delta > 4)
{
processor.GoToColumn(column + 4);
}
var previousParent = paragraphBlock.Parent;
var currentDefinitionList = GetCurrentDefinitionList(paragraphBlock, previousParent);
processor.Discard(paragraphBlock);
// If the paragraph block was not part of the opened blocks, we need to remove it manually from its parent container
if (paragraphBlock.Parent != null)
{
paragraphBlock.Parent.Remove(paragraphBlock);
}
if (currentDefinitionList == null)
{
currentDefinitionList = new DefinitionList(this)
{
Span = new SourceSpan(paragraphBlock.Span.Start, processor.Line.End),
Column = paragraphBlock.Column,
Line = paragraphBlock.Line,
};
previousParent.Add(currentDefinitionList);
}
var definitionItem = new DefinitionItem(this)
{
Line = processor.LineIndex,
Column = column,
Span = new SourceSpan(startPosition, processor.Line.End),
OpeningCharacter = processor.CurrentChar,
};
for (int i = 0; i < paragraphBlock.Lines.Count; i++)
{
var line = paragraphBlock.Lines.Lines[i];
var term = new DefinitionTerm(this)
{
Column = paragraphBlock.Column,
Line = line.Line,
Span = new SourceSpan(paragraphBlock.Span.Start, paragraphBlock.Span.End),
IsOpen = false
};
term.AppendLine(ref line.Slice, line.Column, line.Line, line.Position);
definitionItem.Add(term);
}
currentDefinitionList.Add(definitionItem);
processor.Open(definitionItem);
// Update the end position
currentDefinitionList.UpdateSpanEnd(processor.Line.End);
return(BlockState.Continue);
}
public override BlockState TryContinue(BlockProcessor processor, Block block)
{
var definitionItem = (DefinitionItem)block;
if (processor.IsCodeIndent)
{
processor.GoToCodeIndent();
return(BlockState.Continue);
}
var list = (DefinitionList)definitionItem.Parent;
var lastBlankLine = definitionItem.LastChild as BlankLineBlock;
// Check if we have another definition list
if (Array.IndexOf(OpeningCharacters, processor.CurrentChar) >= 0)
{
var startPosition = processor.Start;
var column = processor.ColumnBeforeIndent;
processor.NextChar();
processor.ParseIndent();
var delta = processor.Column - column;
// We expect to have a least
if (delta < 4)
{
// Remove the blankline before breaking this definition item
if (lastBlankLine != null)
{
definitionItem.RemoveAt(definitionItem.Count - 1);
}
list.Span.End = list.LastChild.Span.End;
return(BlockState.None);
}
if (delta > 4)
{
processor.GoToColumn(column + 4);
}
processor.Close(definitionItem);
var nextDefinitionItem = new DefinitionItem(this)
{
Span = new SourceSpan(startPosition, processor.Line.End),
Line = processor.LineIndex,
Column = processor.Column,
OpeningCharacter = processor.CurrentChar,
};
list.Add(nextDefinitionItem);
processor.Open(nextDefinitionItem);
return(BlockState.Continue);
}
var isBreakable = definitionItem.LastChild?.IsBreakable ?? true;
if (processor.IsBlankLine)
{
if (lastBlankLine == null && isBreakable)
{
definitionItem.Add(new BlankLineBlock());
}
return(isBreakable ? BlockState.ContinueDiscard : BlockState.Continue);
}
var paragraphBlock = definitionItem.LastChild as ParagraphBlock;
if (lastBlankLine == null && paragraphBlock != null)
{
return(BlockState.Continue);
}
// Remove the blankline before breaking this definition item
if (lastBlankLine != null)
{
definitionItem.RemoveAt(definitionItem.Count - 1);
}
list.Span.End = list.LastChild.Span.End;
return(BlockState.Break);
}