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package com.jclark.xsl.expr;
import com.jclark.xsl.om.*;
class ExtensionFunctionCallExpr extends ConvertibleVariantExpr {
private final Name name;
private final VariantExpr[] args;
ExtensionFunctionCallExpr(Name name, VariantExpr[] args) {
this.name = name;
this.args = args;
}
public Variant eval(Node node, ExprContext context) throws XSLException {
Object[] argValues = new Object[args.length];
for (int i = 0; i < args.length; i++)
argValues[i] = args[i].eval(node, context).convertToObject();
Object obj
= context.getExtensionContext(name.getNamespace()).call(name.getLocalPart(),
node,
argValues);
if (obj instanceof String)
return new StringVariant((String)obj);
if (obj instanceof Number)
return new NumberVariant(((Number)obj).doubleValue());
if (obj instanceof Boolean)
return new BooleanVariant(((Boolean)obj).booleanValue());
if (obj instanceof NodeIterator)
return new NodeSetVariant((NodeIterator)obj);
if (obj instanceof Node)
return new NodeSetVariant(new SingleNodeIterator((Node)obj));
if (obj instanceof Variant)
return (Variant)obj;
return new ObjectVariant(obj);
}
}
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