public void CreateModuleWithoutParentContext()
{
Module module = new Module(null);
Assert.IsNotNull(module.Context);
Assert.IsNull(module.Context.Parent);
Assert.AreSame(module, module.Context.Module);
}
public void CreateModuleWithParentContext()
{
Context parent = new Context();
Module module = new Module(parent);
Assert.IsNotNull(module.Context);
Assert.IsNotNull(module.Context.Parent);
Assert.AreSame(parent, module.Context.Parent);
}
public void EvaluateModuleForm()
{
ModuleForm form = new ModuleForm("mymodule");
Assert.AreEqual("mymodule", form.Name);
Module module = new Module(null);
form.Evaluate(module.Context);
Assert.AreEqual("mymodule", form.Name);
}
public void EvaluateExportForm()
{
ExportForm form = new ExportForm(new string[] { "foo/1", "bar/2" });
Assert.AreEqual(2, form.Names.Count);
Assert.IsTrue(form.Names.Contains("foo/1"));
Assert.IsTrue(form.Names.Contains("bar/2"));
Module module = new Module(null);
form.Evaluate(module.Context);
Assert.AreEqual(2, module.ExportNames.Count);
Assert.IsTrue(module.ExportNames.Contains("foo/1"));
Assert.IsTrue(module.ExportNames.Contains("bar/2"));
}
public void AddExportNames()
{
Module module = new Module(null);
Assert.IsNotNull(module.ExportNames);
Assert.AreEqual(0, module.ExportNames.Count);
module.AddExportNames(new string[] { "foo/1", "foo/2" });
Assert.AreEqual(2, module.ExportNames.Count);
Assert.IsTrue(module.ExportNames.Contains("foo/1"));
Assert.IsTrue(module.ExportNames.Contains("foo/2"));
module.AddExportNames(new string[] { "foo/2", "bar/1" });
Assert.AreEqual(3, module.ExportNames.Count);
Assert.IsTrue(module.ExportNames.Contains("foo/1"));
Assert.IsTrue(module.ExportNames.Contains("foo/2"));
Assert.IsTrue(module.ExportNames.Contains("bar/1"));
}
public void EvaluateQualifiedCallExpression()
{
Context context = new Context();
Module module = new Module(null);
context.SetValue("mod", module);
Function function = new Function(context, new object[] { new Variable("X"), new Variable("Y") }, new AddExpression(new VariableExpression(new Variable("X")), new VariableExpression(new Variable("Y"))));
module.Context.SetValue("add/2", function);
module.AddExportNames(new string[] { "add/2" });
QualifiedCallExpression expr = new QualifiedCallExpression(new AtomExpression(new Atom("mod")), new AtomExpression(new Atom("add")), new IExpression[] { new ConstantExpression(1), new ConstantExpression(2) });
Assert.IsFalse(expr.HasVariable());
Assert.IsNotNull(expr.ModuleExpression);
Assert.IsInstanceOfType(expr.ModuleExpression, typeof(AtomExpression));
Assert.IsNotNull(expr.NameExpression);
Assert.IsInstanceOfType(expr.NameExpression, typeof(AtomExpression));
Assert.IsNotNull(expr.ArgumentExpressions);
Assert.AreEqual(2, expr.ArgumentExpressions.Count);
Assert.AreEqual(3, expr.Evaluate(context));
}
public Module LoadModule(string modname)
{
Module module = new Module(this.rootcontext);
StreamReader reader = File.OpenText(modname + ".erl");
Parser parser = new Parser(reader);
for (var form = parser.ParseForm(); form != null; form = parser.ParseForm())
form.Evaluate(module.Context);
reader.Close();
return module;
}
public void RaiseIfNoFunctionExported()
{
Context context = new Context();
Module module = new Module(null);
context.SetValue("mod", module);
Function function = new Function(context, new object[] { new Variable("X"), new Variable("Y") }, new AddExpression(new VariableExpression(new Variable("X")), new VariableExpression(new Variable("Y"))));
module.Context.SetValue("add/2", function);
QualifiedCallExpression expr = new QualifiedCallExpression(new AtomExpression(new Atom("mod")), new AtomExpression(new Atom("add")), new IExpression[] { new ConstantExpression(1), new ConstantExpression(2) });
try
{
expr.Evaluate(context);
Assert.Fail();
}
catch (Exception ex)
{
Assert.AreEqual("undefined function mod:add/2", ex.Message);
}
}
public Context(Context parent = null, Module module = null)
{
this.parent = parent;
this.module = module;
}