2003-07-31 Atsushi Enomoto <ginga@kit.hi-ho.ne.jp>

2003-07-31  Atsushi Enomoto <ginga@kit.hi-ho.ne.jp>

	* XmlParserContext.cs,
	  XmlAttribute.cs,
	  XmlElement.cs : Added internal Dtd and new internal XmlParserContext
	  .ctor() that takes DTDObjectModel. And then rewrote classes which
	  uses DTD information. Changed DocTypeName, InternalSubset, PublicId
	  and SystemId to use DTDObjectModel.
	* DTDObjectModel.cs :
	  Added DTDObjectModel.InternalSubsetHasPEReference.
	  Added DTDEntityDeclaration.IsInternalSubset.
	* XmlTextReader.cs :
	  Added internal GetInternalParserContext (to build entity reader).
	  Added private isIntSubset to check if the DTD subset is internal or
	  external, which might affect well-formedness constraints.
	  Changed GenerateDTDObjectModel to return the resulting DTD model.

	* XmlEntityReference.cs : implemented BaseURI.
	* XmlNodeReader.cs :
	  - Implemented ResolveEntity() and CanResolveEntity(). In fact
	    it leads too many changes on almost all methods and properties,
	    since they now must be aware of entityReader.
	  - fixed ownerElement that might be used to return from attribute
	    value to the element through parent attribtues.
	  - Now changed indexer to call GetAttribute() and moved actual logic
	    to the matching GetAttribute() methods.

svn path=/trunk/mcs/; revision=16946