private XmlToken TokenizeSimple(string text, XmlTokenKind kind, XmlTokenizerMode nextMode)
{
XmlToken token = new XmlToken(kind, text.Length);
position += text.Length;
mode = nextMode;
return(token);
}
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);
}
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);
}
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);
}
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);
}
}
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);
}
}
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);
}
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);
}
}
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 );
// color = "blue";
break;
case XmlTokenKind.ElementName:
color = Color.FromRgb( 163, 21, 21 );
// color = "brown";
break;
case XmlTokenKind.TextContent:
// color = "black";
break;
case XmlTokenKind.AttributeName:
case XmlTokenKind.Entity:
color = Color.FromRgb( 255, 0, 0 );
// color = "red";
break;
case XmlTokenKind.CommentText:
color = Color.FromRgb( 0, 128, 0 );
// color = "green";
break;
}
if( token.Kind == XmlTokenKind.ElementWhitespace
|| ( token.Kind == XmlTokenKind.TextContent && tokenText.Trim() == "" ) )
{
// color = null;
}
return color;
}
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);
}
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;
}
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;
}
}
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;
}
}
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;
}
}
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 TokenizeSimple( string text, XmlTokenKind kind, XmlTokenizerMode nextMode )
{
XmlToken token = new XmlToken( kind, text.Length );
position += text.Length;
mode = nextMode;
return token;
}
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;
}
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;
}
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;
}
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;
}