package org.openntf.formula.test;
import java.util.List;
import org.openntf.formula.ASTNode;
import org.openntf.formula.EvaluateException;
import org.openntf.formula.FormulaContext;
import org.openntf.formula.FormulaParseException;
import org.openntf.formula.FormulaParser;
import org.openntf.formula.FormulaProvider;
import org.openntf.formula.Formulas;
public class TestServiceLoader {
public static void main(final String[] args) throws FormulaParseException, EvaluateException {
final FormulaParser p = Formulas.getParser();
p.setIncludeProvider(new FormulaProvider<ASTNode>() {
public ASTNode get(final String key) {
try {
if ("demofunc".equals(key)) {
return p.parse("@listSupportedFunctions");
}
if ("ackermann".equals(key)) {
return p.parse("@Function(@Ack(n;m)) := @if( n = 0; m+1; m=0; @Ack(n-1;1); @Ack(n-1;@Ack(n;m-1))); @Ack(1;1)");
}
} catch (FormulaParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// TODO Auto-generated method stub
return null;
}
});
ASTNode x = p.parse(System.in, true);
FormulaContext ctx = Formulas.createContext(null, p);
ctx.setParameterProvider(new FormulaProvider<String>() {
public String get(final String key) {
return args[Integer.valueOf(key)];
}
});
List<Object> ret = x.solve(ctx);
System.out.println(ret);
}
}