private static bool FetchHeadingAnchor(ParsingContext context, TokenBuffer tokenBuffer, out string anchorId)
{
Contract.Requires(context != null);
Contract.Requires(tokenBuffer != null);
anchorId = null;
WikiTextToken token = tokenBuffer.ExpectToken(context, WikiTextToken.TokenType.Text);
if (token == null)
{
return(false);
}
string potentialAnchorId = token.Text;
if (!ValidateAnchor(potentialAnchorId))
{
context.ReportError("Invalid heading anchor ID: '{0}'".Fmt(potentialAnchorId));
return(false);
}
anchorId = token.Text;
tokenBuffer.MoveToNextToken();
return(true);
}
private static bool ProcessHeadingAnchor(ParsingContext context, TokenBuffer tokenBuffer, out string anchorId)
{
Contract.Requires(context != null);
Contract.Requires(tokenBuffer != null);
anchorId = null;
if (!tokenBuffer.EndOfTokens)
{
WikiTextToken token = tokenBuffer.Token;
if (token.Type == WikiTextToken.TokenType.HeadingAnchor)
{
tokenBuffer.MoveToNextToken();
if (!FetchHeadingAnchor(context, tokenBuffer, out anchorId))
{
return(false);
}
}
else
{
context.ReportError("Unexpected tokens after ending heading token");
return(false);
}
}
return(true);
}
private static bool ProcessHeadingText(
ParsingContext context,
TokenBuffer tokenBuffer,
WikiTextToken.TokenType endingTokenNeeded,
StringBuilder headingText)
{
Contract.Requires(context != null);
Contract.Requires(tokenBuffer != null);
Contract.Requires(headingText != null);
WikiTextToken.TokenType?actualEndingToken = tokenBuffer.ProcessUntilToken(
context,
t =>
{
switch (t.Type)
{
case WikiTextToken.TokenType.Text:
headingText.Append(t.Text);
return(true);
case WikiTextToken.TokenType.DoubleApostrophe:
case WikiTextToken.TokenType.TripleApostrophe:
throw new NotImplementedException("todo next: add support");
default:
context.ReportError("Unexpected token in heading definition: {0}".Fmt(t.Text));
return(false);
}
},
endingTokenNeeded);
return(actualEndingToken != null && actualEndingToken == endingTokenNeeded);
}
private void ProcessLine(
DocumentDefBuilder docBuilder,
ParsingContext context,
string lineText)
{
Contract.Requires(docBuilder != null);
Contract.Requires(lineText != null);
WikiTokenizationSettings tokenizationSettings = new WikiTokenizationSettings();
tokenizationSettings.IsWholeLine = true;
IList <WikiTextToken> tokens = tokenizer.TokenizeWikiText(lineText, tokenizationSettings);
if (tokens.Count == 0)
{
throw new NotImplementedException("todo next:");
}
TokenBuffer tokenBuffer = new TokenBuffer(tokens);
WikiTextToken firstToken = tokenBuffer.Token;
switch (firstToken.Type)
{
case WikiTextToken.TokenType.Heading1Start:
case WikiTextToken.TokenType.Heading2Start:
case WikiTextToken.TokenType.Heading3Start:
case WikiTextToken.TokenType.Heading4Start:
case WikiTextToken.TokenType.Heading5Start:
case WikiTextToken.TokenType.Heading6Start:
docBuilder.FinalizeCurrentParagraph();
HandleHeadingLine(docBuilder, context, tokenBuffer);
break;
case WikiTextToken.TokenType.Text:
case WikiTextToken.TokenType.DoubleApostrophe:
case WikiTextToken.TokenType.TripleApostrophe:
case WikiTextToken.TokenType.DoubleSquareBracketsOpen:
case WikiTextToken.TokenType.SingleSquareBracketsOpen:
case WikiTextToken.TokenType.BulletList:
case WikiTextToken.TokenType.NumberedList:
case WikiTextToken.TokenType.Indent:
HandleText(docBuilder, context, tokenBuffer);
break;
default:
throw new NotImplementedException("todo next: {0}".Fmt(firstToken.Type));
}
}
private static void HandleText(
DocumentDefBuilder docBuilder,
ParsingContext context,
TokenBuffer tokenBuffer)
{
Contract.Requires(docBuilder != null);
Contract.Requires(context != null);
Contract.Requires(tokenBuffer != null);
TextParsingMode parsingMode = TextParsingMode.RegularText;
InternalLinkIdBuilder internalLinkBuilder = new InternalLinkIdBuilder();
StringBuilder textBuilder = null;
Uri externalLinkUrl = null;
bool isFirstTextElementOfContinuedLine = true;
bool processingSuccessful = tokenBuffer.ProcessUntilEnd(
t =>
{
bool flagCopy = isFirstTextElementOfContinuedLine;
switch (t.Type)
{
case WikiTextToken.TokenType.BulletList:
return(HandleBulletListTokenInText(docBuilder, t));
case WikiTextToken.TokenType.NumberedList:
return(HandleNumberedListTokenInText(docBuilder, t));
case WikiTextToken.TokenType.Indent:
return(HandleIndentTokenInText(docBuilder, t));
case WikiTextToken.TokenType.Text:
{
isFirstTextElementOfContinuedLine = false;
return(HandleTextTokenInText(
docBuilder, parsingMode, t, flagCopy, internalLinkBuilder, ref textBuilder));
}
case WikiTextToken.TokenType.TripleApostrophe:
return(HandleTripleApostropheTokenInText(docBuilder));
case WikiTextToken.TokenType.DoubleApostrophe:
return(HandleDoubleApostropheTokenInText(docBuilder));
case WikiTextToken.TokenType.DoubleSquareBracketsOpen:
return(HandleDoubleSquareBracketsOpenTokenInText(context, t, ref parsingMode));
case WikiTextToken.TokenType.NamespaceSeparator:
return(HandleNamespaceSeparatorTokenInText(context, parsingMode, internalLinkBuilder, t));
case WikiTextToken.TokenType.Pipe:
return(HandlePipeTokenInText(context, t, ref parsingMode));
case WikiTextToken.TokenType.DoubleSquareBracketsClose:
return(HandleDoubleSquareBracketsCloseTokenInText(
docBuilder,
context,
ref parsingMode,
t,
internalLinkBuilder,
textBuilder));
case WikiTextToken.TokenType.SingleSquareBracketsOpen:
return(HandleSingleSquareBracketsOpenTokenInText(context, t, ref parsingMode));
case WikiTextToken.TokenType.ExternalLinkUrlLeadingSpace:
return(HandleExternalLinkUrlLeadingSpaceTokenInText(context, t, parsingMode));
case WikiTextToken.TokenType.ExternalLinkUrl:
return(HandleExternalLinkUrlTokenInText(context, t, ref parsingMode, ref externalLinkUrl));
case WikiTextToken.TokenType.SingleSquareBracketsClose:
return(HandleSingleSquareBracketsCloseTokenInText(
docBuilder,
context,
ref parsingMode,
t,
externalLinkUrl,
textBuilder));
default:
throw new NotImplementedException("todo next: {0}".Fmt(t.Type));
}
});
if (processingSuccessful)
{
switch (parsingMode)
{
case TextParsingMode.InternalLinkPageName:
case TextParsingMode.InternalLinkDescription:
context.ReportError("Missing token ']]'");
break;
case TextParsingMode.ExternalLinkUrl:
case TextParsingMode.ExternalLinkDescription:
context.ReportError("Missing token ']'");
break;
}
}
}
private static void HandleHeadingLine(DocumentDefBuilder docBuilder, ParsingContext context, TokenBuffer tokenBuffer)
{
Contract.Requires(docBuilder != null);
Contract.Requires(context != null);
Contract.Requires(tokenBuffer != null);
WikiTextToken firstToken = tokenBuffer.Token;
WikiTextToken.TokenType endingTokenNeeded;
int headingLevel;
switch (firstToken.Type)
{
case WikiTextToken.TokenType.Heading1Start:
headingLevel = 1;
endingTokenNeeded = WikiTextToken.TokenType.Heading1End;
break;
case WikiTextToken.TokenType.Heading2Start:
headingLevel = 2;
endingTokenNeeded = WikiTextToken.TokenType.Heading2End;
break;
case WikiTextToken.TokenType.Heading3Start:
headingLevel = 3;
endingTokenNeeded = WikiTextToken.TokenType.Heading3End;
break;
case WikiTextToken.TokenType.Heading4Start:
headingLevel = 4;
endingTokenNeeded = WikiTextToken.TokenType.Heading4End;
break;
case WikiTextToken.TokenType.Heading5Start:
headingLevel = 5;
endingTokenNeeded = WikiTextToken.TokenType.Heading5End;
break;
case WikiTextToken.TokenType.Heading6Start:
headingLevel = 6;
endingTokenNeeded = WikiTextToken.TokenType.Heading6End;
break;
default:
throw new InvalidOperationException("BUG");
}
tokenBuffer.MoveToNextToken();
StringBuilder headingText = new StringBuilder();
if (!ProcessHeadingText(context, tokenBuffer, endingTokenNeeded, headingText))
{
return;
}
HeadingElement headingEl = new HeadingElement(headingText.ToString().Trim(), headingLevel);
docBuilder.AddRootChild(headingEl);
tokenBuffer.MoveToNextToken();
string anchorId;
if (!ProcessHeadingAnchor(context, tokenBuffer, out anchorId))
{
return;
}
tokenBuffer.ProcessUntilEnd(
t =>
{
context.ReportError("Unexpected token at the end of heading");
return(false);
});
headingEl.AnchorId = anchorId;
}
