private void SplitUnions(Compiler compiler)
{
AstNode node = AstNode.NewAstNode(this.match);
if (node == null)
{
throw new XsltException(Res.Xslt_InvalidXPath, this.match);
}
if (node.TypeOfAst != AstNode.QueryType.Operator)
{
this.priority = node.DefaultPriority;
return;
}
while (node.TypeOfAst == AstNode.QueryType.Operator)
{
Operator op = (Operator)node;
if (op.OperatorType != Operator.Op.UNION)
{
Debug.Assert(false, "Match pattern cant contain other top level operators");
break;
}
// We have here: UNION := UNION '|' path
TemplateAction right = this.CloneWithoutName();
right.FixupMatch(compiler, op.Operand2);
compiler.AddTemplate(right);
node = op.Operand1;
}
this.FixupMatch(compiler, node);
}
//TRy Changing the algorthim to simplify
private static bool CalculatePriorities(Compiler compiler, AstNode node, TemplateAction right)
{
switch (node.TypeOfAst)
{
case AstNode.QueryType.Operator:
Operator op = (Operator)node;
if (op.OperatorType == Operator.Op.UNION)
{
TemplateAction left = right.Clone();
if (CalculatePriorities(compiler, op.Operand1, left))
{
left.FinishClone(compiler, op.Operand1);
}
compiler.AddTemplate(left);
if (CalculatePriorities(compiler, op.Operand2, right))
{
right.FinishClone(compiler, op.Operand2);
}
return(false);
}
break;
//case AstNode.QueryType.Group:
// return CalculatePriorities(compiler, ((Group)node).GroupNode, right);
}
return(true);
}
internal void CompileSingleTemplate(Compiler compiler)
{
NavigatorInput input = compiler.Input;
//
// find mandatory version attribute and launch compilation of single template
//
string version = null;
bool wrongns = false;
if (input.MoveToFirstAttribute())
{
do
{
Debug.TraceAttribute(input);
string nspace = input.NamespaceURI;
string name = input.LocalName;
if (Keywords.Equals(name, input.Atoms.Version))
{
if (Keywords.Equals(nspace, input.Atoms.XsltNamespace))
{
version = input.Value;
}
else
{
wrongns = true;
}
}
}while(input.MoveToNextAttribute());
input.ToParent();
}
if (version == null)
{
if (wrongns)
{
throw new XsltException(Res.Xslt_WrongNamespace);
}
throw new XsltException(Res.Xslt_MissingAttribute, Keywords.s_Version);
}
Debug.TraceElement(input);
compiler.AddTemplate(compiler.CreateSingleTemplateAction());
}
protected void CompileTopLevelElements(Compiler compiler)
{
// Navigator positioned at parent root, need to move to child and then back
if (compiler.Recurse() == false)
{
Debug.WriteLine("Nothing to compile, exiting");
return;
}
NavigatorInput input = compiler.Input;
bool notFirstElement = false;
do
{
Debug.Trace(input);
switch (input.NodeType)
{
case XPathNodeType.Element:
string name = input.LocalName;
string nspace = input.NamespaceURI;
if (Keywords.Equals(nspace, input.Atoms.XsltNamespace))
{
if (Keywords.Equals(name, input.Atoms.Import))
{
if (notFirstElement)
{
throw new XsltException(Res.Xslt_NotFirstImport);
}
// We should compile imports in reverse order after all toplevel elements.
// remember it now and return to it in CompileImpoorts();
compiler.CompiledStylesheet.Imports.Add(compiler.GetSingleAttribute(compiler.Input.Atoms.Href));
}
else if (Keywords.Equals(name, input.Atoms.Include))
{
notFirstElement = true;
CompileInclude(compiler);
}
else
{
notFirstElement = true;
compiler.PushNamespaceScope();
if (Keywords.Equals(name, input.Atoms.StripSpace))
{
CompileSpace(compiler, false);
}
else if (Keywords.Equals(name, input.Atoms.PreserveSpace))
{
CompileSpace(compiler, true);
}
else if (Keywords.Equals(name, input.Atoms.Output))
{
CompileOutput(compiler);
}
else if (Keywords.Equals(name, input.Atoms.Key))
{
CompileKey(compiler);
}
else if (Keywords.Equals(name, input.Atoms.DecimalFormat))
{
CompileDecimalFormat(compiler);
}
else if (Keywords.Equals(name, input.Atoms.NamespaceAlias))
{
CompileNamespaceAlias(compiler);
}
else if (Keywords.Equals(name, input.Atoms.AttributeSet))
{
compiler.AddAttributeSet(compiler.CreateAttributeSetAction());
}
else if (Keywords.Equals(name, input.Atoms.Variable))
{
VariableAction action = compiler.CreateVariableAction(VariableType.GlobalVariable);
if (action != null)
{
AddAction(action);
}
}
else if (Keywords.Equals(name, input.Atoms.Param))
{
VariableAction action = compiler.CreateVariableAction(VariableType.GlobalParameter);
if (action != null)
{
AddAction(action);
}
}
else if (Keywords.Equals(name, input.Atoms.Template))
{
compiler.AddTemplate(compiler.CreateTemplateAction());
}
else
{
if (!compiler.ForwardCompatibility)
{
throw XsltException.UnexpectedKeyword(compiler);
}
}
compiler.PopScope();
}
}
else if (nspace == input.Atoms.MsXsltNamespace && name == input.Atoms.Script)
{
AddScript(compiler);
}
else
{
if (Keywords.Equals(nspace, input.Atoms.Empty))
{
throw new XsltException(Res.Xslt_NullNsAtTopLevel, input.Name);
}
// Ignoring non-recognized namespace per XSLT spec 2.2
}
break;
case XPathNodeType.ProcessingInstruction:
case XPathNodeType.Comment:
case XPathNodeType.Whitespace:
case XPathNodeType.SignificantWhitespace:
break;
default:
throw new XsltException(Res.Xslt_InvalidContents, "xsl:stylesheet");
}
}while (compiler.Advance());
compiler.ToParent();
}
//TRy Changing the algorthim to simplify
private static bool CalculatePriorities(Compiler compiler, AstNode node, TemplateAction right) {
switch (node.TypeOfAst) {
case AstNode.QueryType.Operator:
Operator op = (Operator) node;
if (op.OperatorType == Operator.Op.UNION) {
TemplateAction left = right.Clone();
if (CalculatePriorities(compiler, op.Operand1, left)) {
left.FinishClone(compiler, op.Operand1);
}
compiler.AddTemplate(left);
if (CalculatePriorities(compiler, op.Operand2, right)) {
right.FinishClone(compiler, op.Operand2);
}
return false;
}
break;
//case AstNode.QueryType.Group:
// return CalculatePriorities(compiler, ((Group)node).GroupNode, right);
}
return true;
}
protected void CompileTopLevelElements(Compiler compiler) {
// Navigator positioned at parent root, need to move to child and then back
if (compiler.Recurse() == false) {
Debug.WriteLine("Nothing to compile, exiting");
return;
}
NavigatorInput input = compiler.Input;
bool notFirstElement = false;
do {
Debug.Trace(input);
switch (input.NodeType) {
case XPathNodeType.Element:
string name = input.LocalName;
string nspace = input.NamespaceURI;
if (Keywords.Equals(nspace, input.Atoms.XsltNamespace)) {
if (Keywords.Equals(name, input.Atoms.Import)) {
if (notFirstElement) {
throw new XsltException(Res.Xslt_NotFirstImport);
}
// We should compile imports in reverse order after all toplevel elements.
// remember it now and return to it in CompileImpoorts();
compiler.CompiledStylesheet.Imports.Add(compiler.GetSingleAttribute(compiler.Input.Atoms.Href));
}
else if (Keywords.Equals(name, input.Atoms.Include)) {
notFirstElement = true;
CompileInclude(compiler);
}
else {
notFirstElement = true;
compiler.PushNamespaceScope();
if (Keywords.Equals(name, input.Atoms.StripSpace)) {
CompileSpace(compiler, false);
}
else if (Keywords.Equals(name, input.Atoms.PreserveSpace)) {
CompileSpace(compiler, true);
}
else if (Keywords.Equals(name, input.Atoms.Output)) {
CompileOutput(compiler);
}
else if (Keywords.Equals(name, input.Atoms.Key)) {
CompileKey(compiler);
}
else if (Keywords.Equals(name, input.Atoms.DecimalFormat)) {
CompileDecimalFormat(compiler);
}
else if (Keywords.Equals(name, input.Atoms.NamespaceAlias)) {
CompileNamespaceAlias(compiler);
}
else if (Keywords.Equals(name, input.Atoms.AttributeSet)) {
compiler.AddAttributeSet(compiler.CreateAttributeSetAction());
}
else if (Keywords.Equals(name, input.Atoms.Variable)) {
VariableAction action = compiler.CreateVariableAction(VariableType.GlobalVariable);
if (action != null) {
AddAction(action);
}
}
else if (Keywords.Equals(name, input.Atoms.Param)) {
VariableAction action = compiler.CreateVariableAction(VariableType.GlobalParameter);
if (action != null) {
AddAction(action);
}
}
else if (Keywords.Equals(name, input.Atoms.Template)) {
compiler.AddTemplate(compiler.CreateTemplateAction());
}
else {
if (!compiler.ForwardCompatibility) {
throw XsltException.UnexpectedKeyword(compiler);
}
}
compiler.PopScope();
}
}
else if (nspace == input.Atoms.MsXsltNamespace && name == input.Atoms.Script) {
AddScript(compiler);
}
else {
if (Keywords.Equals(nspace, input.Atoms.Empty)) {
throw new XsltException(Res.Xslt_NullNsAtTopLevel, input.Name);
}
// Ignoring non-recognized namespace per XSLT spec 2.2
}
break;
case XPathNodeType.ProcessingInstruction:
case XPathNodeType.Comment:
case XPathNodeType.Whitespace:
case XPathNodeType.SignificantWhitespace:
break;
default:
throw new XsltException(Res.Xslt_InvalidContents, "xsl:stylesheet");
}
}
while (compiler.Advance());
compiler.ToParent();
}
internal void CompileSingleTemplate(Compiler compiler) {
NavigatorInput input = compiler.Input;
//
// find mandatory version attribute and launch compilation of single template
//
string version = null;
bool wrongns = false;
if (input.MoveToFirstAttribute()) {
do {
Debug.TraceAttribute(input);
string nspace = input.NamespaceURI;
string name = input.LocalName;
if (Keywords.Equals(name, input.Atoms.Version)) {
if (Keywords.Equals(nspace, input.Atoms.XsltNamespace))
version = input.Value;
else
wrongns = true;
}
}
while(input.MoveToNextAttribute());
input.ToParent();
}
if (version == null) {
if (wrongns) {
throw new XsltException(Res.Xslt_WrongNamespace);
}
throw new XsltException(Res.Xslt_MissingAttribute, Keywords.s_Version);
}
Debug.TraceElement(input);
compiler.AddTemplate(compiler.CreateSingleTemplateAction());
}
