public void SetGlobalValueInTopEnvironmentUsingChild()
{
ValueEnvironment child = new ValueEnvironment(this.environment);
child.SetGlobalValue("foo", "bar");
Assert.AreEqual("bar", this.environment.GetValue("foo"));
Assert.AreEqual("bar", child.GetValue("foo"));
}
public void SetGlobalAndLocalValue()
{
ValueEnvironment child = new ValueEnvironment(this.environment);
child.SetGlobalValue("foo", "bar");
child.SetValue("foo", "bar2");
Assert.AreEqual("bar", this.environment.GetValue("foo"));
Assert.AreEqual("bar2", child.GetValue("foo"));
}
public override object Execute(List arguments, ValueEnvironment environment)
{
Identifier atom;
object arglist;
List body;
atom = (Identifier)arguments.First;
arglist = arguments.Next.First;
body = arguments.Next.Next;
if (body == null)
{
object result = Machine.Evaluate(arglist, environment);
environment.SetGlobalValue(atom.Name, result);
return(result);
}
SubrClosure closure = new SubrClosure(arglist, environment, body);
environment.SetGlobalValue(atom.Name, closure);
return(closure);
}
public override object Execute(List args, ValueEnvironment env)
{
Identifier atom;
object arglist;
List body;
atom = (Identifier)args.First;
arglist = args.Next.First;
body = args.Next.Next;
FSubrMacroClosure closure = new FSubrMacroClosure(arglist, env, body);
env.SetGlobalValue(atom.Name, closure);
return(closure);
}
public override object Execute(List arguments, ValueEnvironment environment)
{
Identifier atom;
List arglist;
List body;
atom = (Identifier)arguments.First;
arglist = (List)arguments.Next.First;
body = arguments.Next.Next;
if (!Predicates.IsIdentifier(arglist.First) || !Predicates.IsNil(arglist.Rest))
{
throw new ArgumentException("df needs a unique parameter");
}
SubrNClosure closure = new SubrNClosure((Identifier)arglist.First, environment, body);
environment.SetGlobalValue(atom.ToString(), closure);
return(closure);
}