private static AdkXPathStep ParseNextStep(Fragment stepFragment)
{
Fragment predicateFragment = stepFragment.FindBoundedFragment('[', ']');
if (predicateFragment != null)
{
AdkExpression predicates = ParsePredicates(predicateFragment);
String stepName = stepFragment.BeforeFragment(predicateFragment);
return(new AdkXPathStep(AdkAxisType.Child, new AdkNodeNameTest(stepName), predicates));
}
else
{
return(ParseStep(stepFragment.ToString()));
}
}
private String Parenthesize(AdkExpression expression, bool left)
{
if (!(expression is AdkOperation))
{
return(expression.ToString());
}
AdkOperation op = (AdkOperation)expression;
int myPrecedence = Precedence;
int thePrecedence = op.Precedence;
bool needParens = true;
if (myPrecedence < thePrecedence)
{
needParens = false;
}
else if (myPrecedence == thePrecedence)
{
if (Symmetric)
{
needParens = false;
}
else
{
needParens = !left;
}
}
if (needParens)
{
return("(" + expression.ToString() + ")");
}
else
{
return(expression.ToString());
}
}
private String Parenthesize( AdkExpression expression, bool left )
{
if ( !(expression is AdkOperation) )
{
return expression.ToString();
}
AdkOperation op = (AdkOperation) expression;
int myPrecedence = Precedence;
int thePrecedence = op.Precedence;
bool needParens = true;
if ( myPrecedence < thePrecedence )
{
needParens = false;
}
else if ( myPrecedence == thePrecedence )
{
if ( Symmetric )
{
needParens = false;
}
else
{
needParens = !left;
}
}
if ( needParens )
{
return "(" + expression.ToString() + ")";
}
else
{
return expression.ToString();
}
}
private void CreatePredicateValues( INodePointer current, AdkExpression predicate, XsltContext evalContext )
{
if ( predicate is AdkEqualOperation )
{
AdkExpression[] components = ((AdkEqualOperation) predicate).Arguments;
AdkLocPath lp = (AdkLocPath) components[0];
AdkNodeNameTest attrName = (AdkNodeNameTest) lp.Steps[0].NodeTest;
INodePointer attr = current.CreateAttribute( this, attrName.NodeName );
Object value = components[1].ComputeValue( evalContext );
attr.SetValue( value );
return;
}
// This might be the 'adk:x()' function
if ( predicate is AdkAndOperation )
{
foreach ( AdkExpression expr in ((AdkAndOperation) predicate).Arguments )
{
if ( expr is AdkFunction && ((AdkFunction) expr).FunctionName.Equals( "adk:x" ) )
{
// This is the special marker function that tells the ADK to always
// create the parent repeatable element. Don't evaluate it.
continue;
}
else
{
CreatePredicateValues( current, expr, evalContext );
}
}
return;
}
// Unrecognized predicate
throw new ArgumentException( "Cannot evaluate expression predicate: " + predicate );
}
public AdkEqualOperation(AdkExpression arg1, AdkExpression arg2) : base(arg1, arg2)
{
}
public AdkEqualOperation( AdkExpression arg1, AdkExpression arg2 )
: base(arg1, arg2)
{
}