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package org.archphantom.shenanigans.examples;
import java.util.ArrayList;
import java.util.Hashtable;
import org.archphantom.shenanigans.elements.Program;
import org.archphantom.shenanigans.elements.expressions.Expression;
import org.archphantom.shenanigans.elements.expressions.Variable;
import org.archphantom.shenanigans.elements.expressions.comparators.BoolEqual;
import org.archphantom.shenanigans.elements.expressions.operations.Multiplication;
import org.archphantom.shenanigans.elements.expressions.operations.Subtraction;
import org.archphantom.shenanigans.elements.expressions.statements.Assignment;
import org.archphantom.shenanigans.elements.expressions.statements.FunctionCall;
import org.archphantom.shenanigans.elements.expressions.statements.Group;
import org.archphantom.shenanigans.elements.expressions.statements.IfElse;
import org.archphantom.shenanigans.elements.expressions.statements.PrintLn;
import org.archphantom.shenanigans.elements.values.Function;
import org.archphantom.shenanigans.elements.values.IntValue;
import org.archphantom.shenanigans.elements.values.Namespace;
import org.archphantom.shenanigans.elements.variables.VarTable;
public class Factorial {
public static void main (String[] args) {
ArrayList<Expression> list = new ArrayList<Expression>();
ArrayList<String> argnames = new ArrayList<String>();
argnames.add("n");
ArrayList<Expression> factorial_expr_body = new ArrayList<Expression>();
ArrayList<Expression> recursionargs = new ArrayList<Expression>();
recursionargs.add(new Subtraction(new Variable("n"), new IntValue("1")));
factorial_expr_body.add(new IfElse(new BoolEqual(new Variable("n"), new IntValue("0")), new IntValue("1"), new Multiplication(new FunctionCall("main.factorial", recursionargs), new Variable("n"))));
Group factorial_body = new Group(factorial_expr_body);
Function factorial = new Function(argnames, factorial_body);
list.add(new Assignment("factorial", factorial));
ArrayList<Expression> arguments = new ArrayList<Expression>();
arguments.add(new IntValue("10"));
list.add(new PrintLn(new FunctionCall("factorial", arguments)));
Group group = new Group(list);
Namespace main = new Namespace("main", group, new VarTable());
Hashtable<String, Namespace> namespaces = new Hashtable<String, Namespace>();
namespaces.put("main", main);
Program p = new Program(namespaces);
p.run();
}
}
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