/// <summary>
/// Tokenizes the simple.
/// </summary>
/// <param name="text">The text.</param>
/// <param name="kind">The kind.</param>
/// <param name="nextMode">The next mode.</param>
/// <returns></returns>
private XmlToken TokenizeSimple(string text, XmlTokenKind kind, XmlTokenizerMode nextMode)
{
XmlToken token = new XmlToken(kind, text.Length);
position += text.Length;
mode = nextMode;
return(token);
}
/// <summary>
/// Tokenizes the entity.
/// </summary>
/// <returns></returns>
private XmlToken TokenizeEntity()
{
Debug.Assert(mode == XmlTokenizerMode.OutsideElement);
Debug.Assert(input[position] == '&');
XmlToken token = new XmlToken(XmlTokenKind.Entity, input.IndexOf(';', position) - position);
position += token.Length;
return(token);
}
private XmlToken TokenizeAttributeValue()
{
Debug.Assert(mode == XmlTokenizerMode.AfterAttributeEquals);
int closePosition = input.IndexOf(input[position], position + 1);
XmlToken token = new XmlToken(XmlTokenKind.AttributeValue, closePosition + 1 - position);
position = closePosition + 1;
mode = XmlTokenizerMode.InsideElement;
return(token);
}
/// <summary>
/// Nexts the token.
/// </summary>
/// <returns></returns>
private XmlToken NextToken()
{
if (position >= input.Length)
{
return(new XmlToken(XmlTokenKind.EOF, 0));
}
XmlToken token;
switch (mode)
{
case XmlTokenizerMode.AfterAttributeEquals:
token = TokenizeAttributeValue();
break;
case XmlTokenizerMode.AfterAttributeName:
token = TokenizeSimple("=", XmlTokenKind.Equals, XmlTokenizerMode.AfterAttributeEquals);
break;
case XmlTokenizerMode.AfterOpen:
token = TokenizeName(XmlTokenKind.ElementName, XmlTokenizerMode.InsideElement);
break;
case XmlTokenizerMode.InsideCData:
token = TokenizeInsideCData();
break;
case XmlTokenizerMode.InsideComment:
token = TokenizeInsideComment();
break;
case XmlTokenizerMode.InsideElement:
token = TokenizeInsideElement();
break;
case XmlTokenizerMode.InsideProcessingInstruction:
token = TokenizeInsideProcessingInstruction();
break;
case XmlTokenizerMode.OutsideElement:
token = TokenizeOutsideElement();
break;
default:
token = new XmlToken(XmlTokenKind.EOF, 0);
Debug.Fail("missing case");
break;
}
return(token);
}
/// <summary>
/// Tokenizes the element whitespace.
/// </summary>
/// <returns></returns>
private XmlToken TokenizeElementWhitespace()
{
int i;
for (i = position; i < input.Length; i++)
{
if (!char.IsWhiteSpace(input[i]))
{
break;
}
}
XmlToken token = new XmlToken(XmlTokenKind.ElementWhitespace, i - position);
position = i;
return(token);
}
/// <summary>
/// Tokenizes the inside comment.
/// </summary>
/// <returns></returns>
private XmlToken TokenizeInsideComment()
{
Debug.Assert(mode == XmlTokenizerMode.InsideComment);
int tokenend = input.IndexOf("-->", position);
if (position == tokenend)
{
position += "-->".Length;
mode = XmlTokenizerMode.OutsideElement;
return(new XmlToken(XmlTokenKind.CommentEnd, "-->".Length));
}
else
{
XmlToken token = new XmlToken(XmlTokenKind.CommentText, tokenend - position);
position = tokenend;
return(token);
}
}
/// <summary>
/// Tokenizes the inside C data.
/// </summary>
/// <returns></returns>
private XmlToken TokenizeInsideCData()
{
Debug.Assert(mode == XmlTokenizerMode.InsideCData);
int tokenend = input.IndexOf("]]>", position);
if (position == tokenend)
{
position += "]]>".Length;
mode = XmlTokenizerMode.OutsideElement;
return(new XmlToken(XmlTokenKind.CDataEnd, "]]>".Length));
}
else
{
XmlToken token = new XmlToken(XmlTokenKind.TextContent, tokenend - position);
position = tokenend;
return(token);
}
}
/// <summary>
/// Tokenizes the inside processing instruction.
/// </summary>
/// <returns></returns>
private XmlToken TokenizeInsideProcessingInstruction()
{
Debug.Assert(mode == XmlTokenizerMode.InsideProcessingInstruction);
int tokenend = input.IndexOf("?>", position);
if (position == tokenend)
{
position += "?>".Length;
mode = XmlTokenizerMode.OutsideElement;
return(new XmlToken(XmlTokenKind.CloseProcessingInstruction, "?>".Length));
}
else
{
XmlToken token = new XmlToken(XmlTokenKind.TextContent, tokenend - position);
position = tokenend;
return(token);
}
}
/// <summary>
/// Tokenizes the name.
/// </summary>
/// <param name="kind">The kind.</param>
/// <param name="nextMode">The next mode.</param>
/// <returns></returns>
private XmlToken TokenizeName(XmlTokenKind kind, XmlTokenizerMode nextMode)
{
Debug.Assert(mode == XmlTokenizerMode.AfterOpen || mode == XmlTokenizerMode.InsideElement);
int i;
for (i = position; i < input.Length; i++)
{
if (!IsNameCharacter(input[i]))
{
break;
}
}
XmlToken token = new XmlToken(kind, i - position);
mode = nextMode;
position = i;
return(token);
}
/// <summary>
/// Colors for token.
/// </summary>
/// <param name="token">The token.</param>
/// <param name="tokenText">The token text.</param>
/// <returns></returns>
public static Color ColorForToken(XmlToken token, string tokenText)
{
Color color = Color.FromRgb(0, 0, 0);
switch (token.Kind)
{
case XmlTokenKind.Open:
case XmlTokenKind.OpenClose:
case XmlTokenKind.Close:
case XmlTokenKind.SelfClose:
case XmlTokenKind.CommentBegin:
case XmlTokenKind.CommentEnd:
case XmlTokenKind.CDataBegin:
case XmlTokenKind.CDataEnd:
case XmlTokenKind.Equals:
case XmlTokenKind.OpenProcessingInstruction:
case XmlTokenKind.CloseProcessingInstruction:
case XmlTokenKind.AttributeValue:
color = Color.FromRgb(0, 0, 255);
break;
case XmlTokenKind.ElementName:
color = Color.FromRgb(163, 21, 21);
break;
case XmlTokenKind.TextContent:
color = Color.FromRgb(0, 0, 0);
break;
case XmlTokenKind.AttributeName:
case XmlTokenKind.Entity:
color = Color.FromRgb(255, 0, 0);
break;
case XmlTokenKind.CommentText:
color = Color.FromRgb(0, 128, 0);
break;
}
if (token.Kind == XmlTokenKind.ElementWhitespace ||
(token.Kind == XmlTokenKind.TextContent && tokenText.Trim() == ""))
{
}
return(color);
}
/// <summary>
/// Tokenizes the text.
/// </summary>
/// <returns></returns>
private XmlToken TokenizeText()
{
Debug.Assert(input[position] != '<');
Debug.Assert(input[position] != '&');
Debug.Assert(mode == XmlTokenizerMode.OutsideElement);
int i;
for (i = position; i < input.Length; i++)
{
if (input[i] == '<' || input[i] == '&')
{
break;
}
}
XmlToken token = new XmlToken(XmlTokenKind.TextContent, i - position);
position = i;
return(token);
}
