public string Evaluate(TagModel model)
{
var id = GetAutoValueAsString(nameof(Name), model);
if (id == null)
{
throw ExpressionParseException.UnexpectedNullValue(nameof(Name)).Decorate(Name.Context);
}
id = LanguageHelper.CamelCaseAttribute(id);
var raw = model.TryGet(id);
if (raw == null)
{
throw MacroException.NotFound(id).Decorate(Name.Context);
}
var macro = raw as DefineMacroTag.MarcoDefinition;
var function = raw as DefineFunctionTag.FunctionDefinition;
if (macro == null && function == null)
{
throw MacroException.NoMacroOrFunction(id).Decorate(Name.Context);
}
if (macro != null)
{
return(ExecuteMacro(model, id, macro));
}
return(ExecuteFunction(model, function));
}
public void TestTooManyArguments()
{
try
{
new ExpressionLib().ParseAndEvaluate("fn:concat('abcd','ef', 'oops one extra')", new Reflection(this));
Assert.Fail("Expected exception");
}
catch (ExpressionParseException EPe)
{
Assert.That(EPe.MessageWithOutContext,
Is.EqualTo(
ExpressionParseException.UnExpectedParameter(new Constant("oops one extra")).Message));
}
}
public void TestNotEnoughArguments()
{
try
{
new ExpressionLib().ParseAndEvaluate("fn:concat('abcd')", new Reflection(this));
Assert.Fail("Expected exception");
}
catch (ExpressionParseException EPe)
{
Assert.That(EPe.MessageWithOutContext,
Is.EqualTo(
ExpressionParseException.ExpectedMoreParameter(new BaseFunctionLib().Obtain("concat"), 1, 2).Message));
}
}
