internal static Pattern Compile(Expression e)
{
if (e is ExprUNION)
{
return(new UnionPattern(Pattern.Compile(((ExprUNION)e).left), Pattern.Compile(((ExprUNION)e).right)));
}
if (e is ExprRoot)
{
return(new LocationPathPattern(new NodeTypeTest(Axes.Self, XPathNodeType.Root)));
}
if (e is NodeTest)
{
return(new LocationPathPattern((NodeTest)e));
}
if (e is ExprFilter)
{
return(new LocationPathPattern((ExprFilter)e));
}
if (e is ExprSLASH)
{
Pattern prev = Pattern.Compile(((ExprSLASH)e).left);
LocationPathPattern locationPathPattern = (LocationPathPattern)Pattern.Compile(((ExprSLASH)e).right);
locationPathPattern.SetPreviousPattern(prev, false);
return(locationPathPattern);
}
if (e is ExprSLASH2)
{
if (((ExprSLASH2)e).left is ExprRoot)
{
return(Pattern.Compile(((ExprSLASH2)e).right));
}
Pattern prev2 = Pattern.Compile(((ExprSLASH2)e).left);
LocationPathPattern locationPathPattern2 = (LocationPathPattern)Pattern.Compile(((ExprSLASH2)e).right);
locationPathPattern2.SetPreviousPattern(prev2, true);
return(locationPathPattern2);
}
else
{
if (e is XPathFunctionId)
{
ExprLiteral exprLiteral = ((XPathFunctionId)e).Id as ExprLiteral;
return(new IdPattern(exprLiteral.Value));
}
if (e is XsltKey)
{
return(new KeyPattern((XsltKey)e));
}
return(null);
}
}
internal static Pattern Compile(string s, Compiler comp)
{
return(Pattern.Compile(comp.patternParser.Compile(s)));
}