void EnsureClosureEndSourceLocation(string code, int line, int column)
{
CompileUnit cu = BooParser.ParseString("closures", code);
Expression e = ((ExpressionStatement)cu.Modules[0].Globals.Statements[0]).Expression;
BlockExpression cbe = (BlockExpression)((BinaryExpression)e).Right;
SourceLocation esl = cbe.Body.EndSourceLocation;
Assert.AreEqual(line, esl.Line);
Assert.AreEqual(column, esl.Column);
}