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Viewing changes to src/addins/MonoDevelop.XmlEditor/MonoDevelop.Xml.StateEngine/XmlFreeState.cs

  • Committer: Bazaar Package Importer
  • Author(s): Jo Shields
  • Date: 2009-02-18 08:40:51 UTC
  • mfrom: (1.2.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20090218084051-gh8m6ukvokbwj7cf
Tags: 1.9.2+dfsg-1ubuntu1
https://launchpad.net/bugs/330519
* Merge from Debian Experimental (LP: #330519), remaining Ubuntu changes:
  + debian/control:
    - Update for Gnome# 2.24
    - Add libmono-cairo1.0-cil to build-deps to fool pkg-config check

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