mono/mcs/class/System.XML/System.Xml.XPath/ChangeLog

2004-02-16  Atsushi Enomoto  <[email protected]>

	* Expression.cs : Added EvaluatedNodeType and NeedAbsoluteMatching
	  to reduce extraneous Matches() trial.
	* Iterator.cs : Removed unused MergedIterator.
	* XPathNavigator.cs : Optimized Matches() not to evaluate ancestors
	  unnecessarily. (Test with NeedAbsoluteMatching).

2004-02-10  Atsushi Enomoto  <[email protected]>

	* Iterator.cs : Added overriden Count properties for some iterators
	  (this fixes the half of #50678).
	  Added ListIterator class (which can reduce GetEnumerator()). 
	  In some places we can omit clone for Current property, so added 
	  some check logic (It has no effect as yet).
	* Expression.cs, DefaultContext.cs :
	  use ListIterator instead of EnumeratorIterator.

2004-02-08  Atsushi Enomoto  <[email protected]>

	* DefaultContext.cs, Expression.cs, Iterator.cs :
	  tiny foreach elimination.

2004-02-05  Atsushi Enomoto  <[email protected]>

	* DefaultContext.cs : trivial processing order fix.

2004-01-27  Atsushi Enomoto  <[email protected]>

	* DefaultContext.cs : Avoid exception if possible.
	* Iterator.cs : Fixed PrecedingSiblingIterator.MoveNext(). When the
	  nav was positioned at the first, it incorrectly points itself.
	  Don't add names to name table while it is useless and expensive.

2004-01-08  Nick Drochak <[email protected]>

	* Iterator.cs: Removed unused variable.
	
2003-12-18 Atsushi Enomoto  <[email protected]>

	* Parser.jay : now it supresses error output from jay.
	* DefaultContext.cs : (XPathFunctionSubstring) exclude -Infinity.
	* Tokenizer.cs : better error message.
	* XPathDocument.cs : Use XmlValidatingReader to support id() function.
	  (just found MS.NET actually supports it)

2003-12-16 Atsushi Enomoto  <[email protected]>

	* Iterator.cs : On its iteration, moving Current must not affect to
	  MoveNext(). To assure this, Current must be a clone of navigator.
	  Removed unused code.

2003-12-07 Atsushi Enomoto  <[email protected]>

	* Tokenizer.cs : Removed some TODOs. (trivial ;-)
	* Iterator.cs : ParensIterator can inherit from BaseIterator.
	  SlashIterator copy .ctor() always failed to clone. This fixes Count.

2003-12-03 Atsushi Enomoto  <[email protected]>

	* Expression.cs : XPathSorters.Compare() should compare document
	  position. See last sentence of XSLT 1.0 secion 10.

2003-12-03 Atsushi Enomoto  <[email protected]>

	* DefaultContext.cs : Overrode all functions' ToString().
	  XPathFunctions.ToNumber() trims whitespaces at both side.
	  Fixed NullReferenceException in normalize-space().
	* Iterator.cs : Fixed AncestorOrSelfIterator.MoveNext() didn't handle
	  attribute or namespace node correctly.
	  SlashIterator.Clone() didn't clone "next node iterator" correctly.
	  EnumeratorIterator.ctor() should raise an error (not at Clone())
	  when the target IEnumerator is not ICloneable.

2003-11-28  Atsushi Enomoto  <[email protected]>

	* Expression.cs : namespace axis now traversed in reverse order, so it
	  requires sorting.
	* Iterator.cs : UnionIterator.Clone() was incomplete. 
	  NamespaceItarator() should be reverse order (special handling
	  because of XPathNavigator specification).

2003-11-24  Atsushi Enomoto  <[email protected]>

	* Iterator.cs : PrecedingIterator.MoveNext() now breaks up at Root.
	* XPathNavigator.cs : ComparePosition() didn't handle attributes 
	  correctly.

2003-11-24  Atsushi Enomoto  <[email protected]>

	* Parser.jay, Expression.cs, Iterator.cs :
	  Added ExprParens and ParensIterator classes which is used to handle
	  precedence of parenthesized expressions.
	  (e.g. consider "(preceding::*)[3]" and "preceding::[3]" )

	* Expression.cs, Iterator.cs :
	  Added RequireSorting property for each Expr and BaseIterator classes.
	  SlashIterator.MoveNext() now considers correct sorting. But
	  considering performance, it separates two logics, sorted and sortless
	  depending on RequireSorting of left iterator and right expression.

	* Iterator.cs :
	  SimpleIterator.ctor() should consider when nav is null.
	  FollowingIterator.MoveNext() and PrecedingIterator.MoveNext() should
	  not return any nodes.
	  AncestorIterator and AncestorOrSelfIterator copy ctr() should clone
	  positions.
	  AncestorIterator.MoveNext() should skip Root if context node is
	  Root itself.
	  FollowingIterator.MoveNext() should not handle children of context
	  itself.
	  PrecedingIterator.MoveNext() should skip its ancestors.
	  AxisIterator.ReverseAxis should be dependent on its containing iter.
	  UnionIterator.MoveNext() should consider comparison of nodes in 
	  different document. The behavior is implementation dependent.
	  (see XSLT spec 12.1)

2003-11-19  Atsushi Enomoto  <[email protected]>

	* Added XPathComparer.cs
	* DefaultContext.cs : Fixed XPathFunctionId.Evaluate() to iterate base 
	  iterator correctly, and sort results.

2003-11-19  Atsushi Enomoto  <[email protected]>

	* DefaultContext.cs : Imcomplete fix ;-)

2003-11-19  Atsushi Enomoto  <[email protected]>

	* DefaultContext.cs : XPathFunctions.ToNumber() should catch overflow.
	  XPathFunctionId.cs : Exposed Id expression.
	* Expression.cs : Added ExprLiteral.Value, and class ExprParens (it
	  will be used to solve evaluation precedence problem).

2003-11-09  Atsushi Enomoto  <[email protected]>

	* Iterator.cs : Fixed SlashIterator that might return nodes 1)in
	  inconsistent order, and 2)may return duplicate result nodes.

2003-11-06 Ben Maurer  <[email protected]>

	* Iterator.cs: (AxisIterator.ComparablePosition): Remove. Let
	it inherit from the base class. This made b[2] evaluated on 
	<a /><b /><c /><a /><b /><c /> return the first b node because
	in the ChildIterator it was the second node and seemed to satsify
	the predicate.

2003-11-04  Atsushi Enomoto  <[email protected]>

	* Iterator.cs : Added bool ReverseAxis property to identify whether
	  the iterator is in reverse order or not.  Added ComparablePosition
	  for correct position comparison for PredicateIterator and reverse-
	  order-axes.  Modified AncestorIterator, AncestorOrSelfIterator,
	  PrecedingIterator and PrecedingSiblingIterator to make MoveNext()
	  return their nodes in document order. This fixes bugzilla #39079.

2003-10-15  Atsushi Enomoto  <[email protected]>

	* Iterator.cs : DescendantIterator and FollowingIterator also should
	  not MoveNext() after they reached to the end.

2003-10-13  Atsushi Enomoto  <[email protected]>

	* Iterator.cs : Fixed UnionIterator who ignores document order.
	  Fixed SlashIterator whose MoveNext() should finish at its end.

2003-09-27 Ben Maurer  <[email protected]>

	* Iterator.cs, Expression.cs, XPathNavigator.cs: In AxisIterator
	use NameTable so we dont call strcmp.

2003-09-27 Ben Maurer  <[email protected]>

	* DefaultContext.cs (translate): translate ("abc", "c", "") = "ab"
	not "abc".
	* Iterator.cs, Expression.cs: All axes are
	SimpleIterators. SimpleIterators are gaurenteed to give the same
	XPathNavigator in Current. Make AxisIterator take a
	SimpleIterator, not any old BaseIterator. Will allow us to make
	NameTable optimizations and avoid quite a few strcmp's.

2003-09-24 Ben Maurer  <[email protected]>

	* Expression.cs: make // work right, must use another slash itr.

2003-09-21 Ben Maurer  <[email protected]>

	* Expression.cs: cant use $$ before assigned.

2003-09-21 Ben Maurer  <[email protected]>

	* Expression.cs, Parser.jay, XPathNavigator.cs: api beautification.

2003-09-20 Ben Maurer  <[email protected]>

	* Expression.cs: num != double.NaN does not work.

2003-09-19 Ben Maurer  <[email protected]>

	* Expression.cs: in NodeTypeTest dont throw an exception if it is
	an unknown node type (allows for better Pattern debugging).

2003-09-17 Ben Maurer  <[email protected]>

	* DefaultContext.cs: implement sum () and translate ().

2003-09-13 Ben Maurer  <[email protected]>

	* XPathNavigator.cs: Make methods where you pass in the context,
	so that we dont have to clone expressions so much.

2003-09-06 Ben Maurer  <[email protected]>

	* DefaultContext.cs, Expresssion.cs, Parser.jay: Rewrite so that
	system functions are actually expressions. Will allow for some
	nice optimizations.

2003-08-25 Ben Maurer  <[email protected]>

	* XPathNavigator.cs: "Smart" behavior in Matches. Nice 8x speed
	improvement in the method (5ms/call -> .7 ms / call) measured by
	monodoc's rendering of N:System.
	* Expression.cs: Utility methods to support above.

2003-08-13 Piers Haken	<[email protected]>
	
	* Iterator.cs:
		fix MergedIterator.Clone(), now clones other's iterators
		fix DescendantIterator.Clone(), now copies depth
		make iterator cloning constructors more type-specific

2003-08-01 Piers Haken	<[email protected]>

	* Expression.cs: added NodeNamespaceTest
	* XPathNavigator.cs: implement Select* with namespaces

2003-07-31 Ben Maurer  <[email protected]>

	* Iterator.cs: Allow creation of an EnumeratorIterator with an
	XmlNamespaceManager.
	
2003-07-31 Piers Haken	<[email protected]>

	* Parser.jay:
		Nested predicates (uses ExprFilter instead)
		more type safety
		make grammar look more like w3c spec
	* Expression.cs:
		remove ExprStep, ExprPredicates
		NodeTest is now a NodeSet
		more type-safety
	* Iterator.cs:
		PredicateIterator now only takes a single predicate expression
		more type-safety
	* XPathNavigator.cs:
		simplified SelectTest
	* XPathException.cs:
		fixed indenting

2003-07-30  Duncan Mak  <[email protected]>

	* XPathException.cs
	(GetObjectData): 
	(Message): Added.

2003-07-29 Piers Haken	<[email protected]>

	* DefaultContext.cs: 'local-name' returns String, not NodeSet!

2003-07-29 Piers Haken	<[email protected]>

	* XPathNavigator.cs:
	* Expression.cs:
		add typesafe Evaluate* methods

2003-07-29 Piers Haken	<[email protected]>

	* DefaultContext.cs: fix 'substring-after'

2003-07-29 Piers Haken	<[email protected]>

	* Iterator.cs: fix PredicateIterator.CurrentPosition bug (it wasn't incrementing)

2003-07-29 Ben Maurer  <[email protected]>

	* Iterator.cs: dont throw exceptions on tostring ()
	
2003-07-28  Piers Haken	<[email protected]>

	* DefaultContext.cs: better handling of null argument lists
	* XPathNavigator.cs: implement ComparePosition

2003-07-28  Piers Haken	<[email protected]>

	* Expression.cs: boolean operators: handle comparing .Any better

2003-07-28  Piers Haken	<[email protected]>

	* DefaultContext.cs: count() should return a double
	* Expression.cs: better support for handling non-double numbers

2003-07-28  Piers Haken	<[email protected]>

	* DefaultContext.cs: better function param matching

2003-07-27  Piers Haken	<[email protected]>

	* Expression.cs:
	* DefaultContext.cs:
		catch FormatExceptions while parsing numbers

2003-07-27  Piers Haken	<[email protected]>

	* Expression.cs:
		fix case sorting order
		allow EvaluateNumber to take XPathResultType.Any

2003-07-27  Piers Haken	<[email protected]>

	* Expression.cs:
	* Tokenizer.cs:
		don't pass null to XmlQualifiedName constructor

2003-07-27  Piers Haken	<[email protected]>

	* DefaultContext.cs: allow 'concat' to take arbitrary-typed arguments (spec?)

2003-07-27  Piers Haken	<[email protected]>

	* Expression.cs: allow EvaluateNodeSet to take XPathResultType.Any

2003-07-26  Piers Haken	<[email protected]>

	* Expression.cs: fix function evaluation with ambigous argument types
	* XPathNavigator.cs: fix silly null reference bug

2003-07-26  Piers Haken	<[email protected]>

	* Iterator.cs:
	* DefaultContext.cs:
		ArrayListIterator->EnumeratorIterator
	* Expression.cs: add sorting support

2003-07-26  Piers Haken	<[email protected]>

	* Tokenizer.cs:
	* Parser.jay:
		move QName parsing into tokenizer
	* Expression.cs:
		fix evaluating XPathResultType.Any
		fix ExprDiv.ToString()
		fix NodeTypeTest.ToString() (for namespace axis)

2003-07-25  Piers Haken	<[email protected]>

	* Expression.cs: return clone of $var evaluation

2003-07-26  Piers Haken	<[email protected]>

	* Iterator.cs: add setter for NamespaceManager
	* XPathNavigator.cs: propagate NamespaceManager from context on Evaluate
	* Expression.cs: fix func/var exception strings

2003-07-25  Piers Haken	<[email protected]>

	* Expression.cs: implement ExprFilter.Evaluate

2003-07-25  Piers Haken	<[email protected]>

	* Expression.cs: implement ExprVariable.Evaluate

2003-07-24  Ben Maurer <[email protected]>
	
	* DefaultContext.cs: implement lang ()

2003-07-24  Piers Haken	<[email protected]>

	* Parser.jay:
	* Expression.cs:
		allow ExprUNION to take non-nodeset (eg, $var) arguments

2003-07-24  Piers Haken	<[email protected]>

	* Tokenizer.cs: fix variable references
	* Parser.jay:
	* Expression.cs:
	* XPathNavigator.cs:
		use XmlQualifiedName

2003-06-30  Atsushi Enomoto  <[email protected]>

	* XPathDocument.cs : removed Driver class and restored authors' name
	  (though it is completely rewrote).

2003-06-30  Atsushi Enomoto  <[email protected]>

	* XPathDocument.cs : Replaced existing stub class with real
	  XPathDocument implementation.

2003-04-28  Piers Haken  <[email protected]>

	* Parser.jay, Tokenizer.cs: more compliant lexical parsing of ambiguous tokens

2003-03-07  Piers Haken  <[email protected]>

	* Tokenizer.cs: allow '.'s in NCNames

2003-03-07  Piers Haken  <[email protected]>

	* Exression.cs:
	* DefaultContext.cs:
		fixed function argument resolution

2003-02-09  Piers Haken  <[email protected]>

	* XPathNavigator.cs:
	* Iterator.cs:
	* Expression.cs: fix namespace handling

2003-01-04  Piers Haken  <[email protected]>

	* Parser.*: Remove extraneous "using" that was stopping the build. Permanently thisi time ;-)

2003-02-02  Piers Haken <[email protected]>

	* Parser.jay: add token names
	* Tokenizer.cs: fix NCName tokenization

2003-01-02  Atsushi Enomoto  <[email protected]>

	* Tokenizer.cs : Fixed ParseIdentifier to allow digits.
		(It should be a temporary fix.)

2002-09-22  Nick Drochak  <[email protected]>

	* Parser.cs: Remove extraneous "using" that was stopping the build.

2002-09-21  Piers Haken <[email protected]>

	* XPathException: implementation
	* Expression.cs:
	* Iterator.cs:
	* Parser.jay:
	* Tokenizer.jay:
	* XPathNavigator.jay:
		use XPathException.

2002-09-13  Gonzalo Paniagua Javier <[email protected]>

	* Parser.cs: commented out non-existent namespace (it compiles fine
	with mcs because of a bug that is already on bugzilla).

2002-09-12  Piers Haken <[email protected]>

	* Tokenizer.cs: fix parsing numbers that start with '.'
	* DefaultContext.cs: use MS-compatible formatting of doubles

2002-09-12  Piers Haken <[email protected]>

	* Iterator.cs: added NullIterator to handle unspecified contexts
	* XPathNavigator.cs: use NullIterator insted of SelfIterator when context is unspecified.
	* XPathNodeIterator.cs: change default _count to -1 to prevent recalculations for NullIterators

2002-09-12  Piers Haken <[email protected]>

	* Expression.cs, Parser.jay: allow ExprSLASH to take a generic expression as its left argument.
	* Iterator.cs: fix SlashIterator.Clone() when _iterRight is null.
	* DefaultContext.cs: fix id() return type.

2002-09-03  Gonzalo Paniagua Javier <[email protected]>

	* DefaultContext.cs: fixed bug #28840.
	* Expression.cs: added FIXME.

2002-08-17  Jason Diamond <[email protected]>

	* XPathNavigator.cs: Fixed matching on patterns that look like
	absolute XPath expressions.

2002-08-17  Jason Diamond <[email protected]>

	* XPathNavigator.cs: Added naive (but working) implementation of
	 Matches.

2002-07-31  Piers Haken <[email protected]>

	* XPathDocument.cs: simple, XmlDocument-based implementation

2002-07-25  Piers Haken <[email protected]>

	* DefaultContext.cs: implement XPathFunctionName 'name()' function.

2002-07-17  Piers Haken <[email protected]>
	
	* DefaultContext.cs: implement 'string-length()', 'normalize-space()'
	* Parser.jay: remove redundant production
	* Expression.cs: add switches for debugging under VS.NET

2002-07-17  Piers Haken <[email protected]>

	* Expression.cs: implement nodeset/nodeset comparisons (non-optimal)

2002-07-15  Piers Haken <[email protected]>

	* Iterator.cs:
		- rename UnionIterator to MergedIterator, 
		- create new UnionIterator to implment uniqueness for '|' operator
		- fix position bug in ArrayListIterator.Clone()
	* Expression.cs: use new UnionIterator constructor syntax

2002-07-12  Piers Haken <[email protected]>

	* Iterator.cs: PredicateIterator: handle numeric predicates
	* Parser.jay: add some debugging support: yyparseDebug
	* Tokenizer.cs: cleanup, include '-' chars in identifier tokens

2002-06-29  Piers Haken <[email protected]>

	* Expression.cs:
		- remove dead code
		- NodeTest uses XPathResultType instead of internal NodeTestTypes enum
		- remove NodeTestTypes enum
		- remove NodeTestTypeAny (functionality provided by base now)
		- fix ExprStep to handle wildcard QNames
	* Parser.jay:
		- moved to Mono.Xml.XPath namespace
		- use XPathResultType
		- handle wildcard QNames
		
	* Tokenizer.cs: moved to Mono.Xml.XPath namespace
	
	* XPathNavigator.cs: implement
		- IsDescendant
		- SelectAncestors
		- SelectDescendants
		- SelectChildren
		
	* XPathResultType.cs: fix enum values
	
2002-06-24  Jason Diamond  <[email protected]>

	* XPathScanner.cs: Removed.

2002-06-24  Dick Porter <[email protected]>

	* XmlCaseOrder.cs: Fix namespace

2002-06-23  Piers Haken <[email protected]>

	* DefaultContext.cs: implemented XPathFUnctionId
	* Iterator.cs: new ArrayListIterator for id() support

2002-06-23  Piers Haken <[email protected]>

	* XPathNavigator.cs: implement:
		- Compile
		- Evaluate
		- Clone
		- Select
		- ToString
		- some forwarding methods

	* XPathNodeIterator: implement caching Count

	* Tokenizer.cs: new XPath tokenizer
	* Parser.jay: new XPath grammar
	* Parser.cs: new precompiled XPath grammar
	* Expression.cs: new XPath expression objects
	* Iterator.cs: new XPath result/context objects
	* DefaultContext.cs: new XPath function binding context

2002-05-08  Tim Coleman <[email protected]>
	* XPathDocument.cs:
	* XPathException.cs: New stub files added.

2002-04-12  Duncan Mak  <[email protected]>

	* XmlCaseOrder.cs: Moved to here from System.Xml.

2002-03-26  Jason Diamond  <[email protected]>

	* XPathScanner.cs: Now handles name tests with wildacards. Abbreviated 
	steps. Both absolution and relative abbreviated location paths.

2002-03-25  Jason Diamond  <[email protected]>

	* XPathScanner.cs: Added new file. This class is supposed to be internal
	but that would make it impossible to test.

2002-03-08  Duncan Mak  <[email protected]>

	* XPathNamespaceScope.cs:
	* XPathNodeType.cs:
	* XPathResultType.cs:
	* XmlDataType.cs:
	* XmlSortOrder.cs: Used EnumCheck and realigned elements to be compatible with MS
	implementation. XPathResultType is interesting as EnumCheck does
	not show the Navigator element, but shows the String element twice.

2002-03-08  Jason Diamond  <[email protected]>

	* XmlDataType.cs, XmlSortOrder.cs, XPathNodeType.cs: Added files.

2002-03-06  Jason Diamond  <[email protected]>

	* ChangeLog: Added to this directory.

	* XPathExpression.cs, XPathNamespaceScope.cs, XPathNodeIterator.cs,
	XPathResultType.cs: New files.

	* XPathNavigator.cs: Stubbed out all properties and methods.