private double CalculateIdentifierValue(IdentifierExp exp, Dictionary <string, DefineExp> context)
{
Dictionary <string, DefineExp> localContext = CopyContext(context);
if (localContext.ContainsKey(exp.Name) == false)
{
throw new InvalidOperationException($"В списке переменных не найдена переменная с именем {exp.Name}.");
}
if (IsPrimitive(exp))
{
return(CalculateExp(localContext[exp.Name].Children[1], localContext));
}
//function defined
var defineExp = localContext[exp.Name];
var functionSignature = (IdentifierExp)defineExp.Children[0];
for (int argumentIndex = 0; argumentIndex < functionSignature.Children.Count; argumentIndex++)
{
var functionArgument = (IdentifierExp)functionSignature.Children[argumentIndex];
var argumentSubstitution = new DefineExp();
argumentSubstitution.Children.Add(functionArgument);
double argValue = CalculateExp(exp.Children[argumentIndex], context);
argumentSubstitution.Children.Add(new DoubleExp(argValue));
localContext[functionArgument.Name] = argumentSubstitution;
}
var functionBody = defineExp.Children[1];
return(CalculateExp(functionBody, localContext));
}
public void visit(IdentifierExp identifier)
{
throw new NotImplementedException();
}
public override void visit(IdentifierExp n)
{
n.Scope = Scope;
}
public ASTType visit(IdentifierExp n)
{
return n.Scope.Lookup(n.ID.Name).accept(this);
}
