private static Inline HandleLeftSquareBracket(Subject subj, bool isImage)
{
Inline inlText;
if (isImage)
{
inlText = new Inline("![", subj.Position - 1, subj.Position + 1);
}
else
{
inlText = new Inline("[", subj.Position, subj.Position + 1);
}
// move past the '['
subj.Position++;
var istack = new InlineStack();
istack.Delimeter = '[';
istack.StartingInline = inlText;
istack.StartPosition = subj.Position;
istack.Priority = InlineStack.InlineStackPriority.Links;
istack.Flags = InlineStack.InlineStackFlags.Opener | (isImage ? InlineStack.InlineStackFlags.ImageLink : InlineStack.InlineStackFlags.None);
InlineStack.AppendStackEntry(istack, subj);
return(inlText);
}
private static Inline HandleTilde(Subject subj)
{
bool canOpen, canClose;
var numdelims = ScanEmphasisDelimeters(subj, '~', out canOpen, out canClose);
if (numdelims == 1)
{
return(new Inline("~", subj.Position - 1, subj.Position));
}
if (canClose)
{
// walk the stack and find a matching opener, if there is one
var istack = InlineStack.FindMatchingOpener(subj.LastPendingInline, InlineStack.InlineStackPriority.Emphasis, '~', out canClose);
if (istack != null)
{
MatchInlineStack(istack, subj, numdelims, null, null, InlineTag.Strikethrough);
// if the closer was not fully used, move back a char or two and try again.
if (numdelims > 2)
{
subj.Position = subj.Position - numdelims + 2;
// use recursion only if it will not be very deep.
if (numdelims < 10)
{
return(HandleTilde(subj));
}
}
return(null);
}
}
var inlText = new Inline(subj.Buffer, subj.Position - numdelims, numdelims,
subj.Position - numdelims, subj.Position);
if (canOpen || canClose)
{
var istack = new InlineStack();
istack.DelimeterCount = numdelims;
istack.Delimeter = '~';
istack.StartingInline = inlText;
istack.Priority = InlineStack.InlineStackPriority.Emphasis;
istack.Flags = (canOpen ? InlineStack.InlineStackFlags.Opener : 0)
| (canClose ? InlineStack.InlineStackFlags.Closer : 0);
InlineStack.AppendStackEntry(istack, subj);
}
return(inlText);
}
private static Inline HandleOpenerCloser(Subject subj, InlineTag singleCharTag, InlineTag doubleCharTag)
{
bool canOpen, canClose;
var c = subj.Buffer[subj.Position];
var numdelims = ScanEmphasisDelimiters(subj, c, out canOpen, out canClose);
if (canClose)
{
// walk the stack and find a matching opener, if there is one
var istack = InlineStack.FindMatchingOpener(subj.LastPendingInline, InlineStack.InlineStackPriority.Emphasis, c, numdelims, canOpen, out canClose);
if (istack != null)
{
var useDelims = MatchInlineStack(istack, subj, numdelims, null, singleCharTag, doubleCharTag);
if (useDelims > 0)
{
// if the closer was not fully used, move back a char or two and try again.
if (useDelims < numdelims)
{
subj.Position = subj.Position - numdelims + useDelims;
// use recursion only if it will not be very deep.
// however it cannot be used if the single char will not be parsed.
if (numdelims < 10)
{
return(HandleOpenerCloser(subj, singleCharTag, doubleCharTag));
}
}
return(null);
}
}
}
var inlText = new Inline(subj.Buffer, subj.Position - numdelims, numdelims, subj.Position - numdelims, subj.Position, c);
if (canOpen || canClose)
{
var istack = new InlineStack();
istack.DelimiterCount = numdelims;
istack.Delimiter = c;
istack.StartingInline = inlText;
istack.Priority = InlineStack.InlineStackPriority.Emphasis;
istack.Flags = (canOpen ? InlineStack.InlineStackFlags.Opener : 0)
| (canClose ? (InlineStack.InlineStackFlags.Closer | InlineStack.InlineStackFlags.CloserOriginally) : 0);
InlineStack.AppendStackEntry(istack, subj);
}
return(inlText);
}