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//
// XmlFreeState.cs
//
// Author:
// Michael Hutchinson <mhutchinson@novell.com>
//
// Copyright (C) 2008 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using MonoDevelop.Xml.Dom;
using MonoDevelop.Ide.Editor;
namespace MonoDevelop.Xml.Parser
{
public class XmlRootState : XmlParserState
{
protected const int FREE = 0;
protected const int BRACKET = FREE + 1;
protected const int BRACKET_EXCLAM = BRACKET + 1;
protected const int COMMENT = BRACKET_EXCLAM + 1;
protected const int CDATA = COMMENT + 1;
protected const int DOCTYPE = CDATA + 1;
protected const int MAXCONST = DOCTYPE;
XmlTagState tagState;
XmlClosingTagState closingTagState;
XmlCommentState commentState;
XmlCDataState cDataState;
XmlDocTypeState docTypeState;
XmlProcessingInstructionState processingInstructionState;
public XmlRootState () : this (new XmlTagState (), new XmlClosingTagState ()) {}
public XmlRootState (XmlTagState tagState, XmlClosingTagState closingTagState)
: this (tagState, closingTagState, new XmlCommentState (), new XmlCDataState (),
new XmlDocTypeState (), new XmlProcessingInstructionState ()) {}
public XmlRootState (
XmlTagState tagState,
XmlClosingTagState closingTagState,
XmlCommentState commentState,
XmlCDataState cDataState,
XmlDocTypeState docTypeState,
XmlProcessingInstructionState processingInstructionState)
{
this.tagState = tagState;
this.closingTagState = closingTagState;
this.commentState = commentState;
this.cDataState = cDataState;
this.docTypeState = docTypeState;
this.processingInstructionState = processingInstructionState;
Adopt (this.TagState);
Adopt (this.ClosingTagState);
Adopt (this.CommentState);
Adopt (this.CDataState);
Adopt (this.DocTypeState);
Adopt (this.ProcessingInstructionState);
}
protected XmlTagState TagState {
get { return tagState; }
}
protected XmlClosingTagState ClosingTagState {
get { return closingTagState; }
}
protected XmlCommentState CommentState {
get { return commentState; }
}
protected XmlCDataState CDataState {
get { return cDataState; }
}
protected XmlDocTypeState DocTypeState {
get { return docTypeState; }
}
protected XmlProcessingInstructionState ProcessingInstructionState {
get { return processingInstructionState; }
}
public override XmlParserState PushChar (char c, IXmlParserContext context, ref string rollback)
{
if (c == '<') {
if (context.StateTag != FREE)
context.LogError ("Incomplete tag opening; encountered unexpected '<'.",
new DocumentRegion (
context.LocationMinus (LengthFromOpenBracket (context) + 1),
context.LocationMinus (1)));
context.StateTag = BRACKET;
return null;
}
switch (context.StateTag) {
case FREE:
//FIXME: handle entities?
return null;
case BRACKET:
if (c == '?') {
rollback = string.Empty;
return this.ProcessingInstructionState;
} else if (c == '!') {
context.StateTag = BRACKET_EXCLAM;
return null;
} else if (c == '/') {
return this.ClosingTagState;
} else if (char.IsLetter (c) || c == '_') {
rollback = string.Empty;
return TagState;
}
break;
case BRACKET_EXCLAM:
if (c == '[') {
context.StateTag = CDATA;
return null;
} else if (c == '-') {
context.StateTag = COMMENT;
return null;
} else if (c == 'D') {
context.StateTag = DOCTYPE;
return null;
}
break;
case COMMENT:
if (c == '-')
return CommentState;
break;
case CDATA:
string cdataStr = "CDATA[";
if (c == cdataStr [context.KeywordBuilder.Length]) {
context.KeywordBuilder.Append (c);
if (context.KeywordBuilder.Length < cdataStr.Length)
return null;
return CDataState;
}
context.KeywordBuilder.Length = 0;
break;
case DOCTYPE:
string docTypeStr = "OCTYPE";
if (c == docTypeStr [context.KeywordBuilder.Length]) {
context.KeywordBuilder.Append (c);
if (context.KeywordBuilder.Length < docTypeStr.Length)
return null;
return DocTypeState;
} else {
context.KeywordBuilder.Length = 0;
}
break;
}
context.LogError ("Incomplete tag opening; encountered unexpected character '" + c + "'.",
new DocumentRegion (
context.LocationMinus (LengthFromOpenBracket (context)),
context.Location));
context.StateTag = FREE;
return null;
}
static int LengthFromOpenBracket (IXmlParserContext context)
{
switch (context.StateTag) {
case BRACKET:
return 1;
case BRACKET_EXCLAM:
return 2;
case COMMENT:
return 3;
case CDATA:
case DOCTYPE:
return 3 + context.KeywordBuilder.Length;
default:
return 1;
}
}
public virtual XDocument CreateDocument ()
{
return new XDocument ();
}
}
}
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