public Object VisitAssigmentNode(IAssigmentASTNode assigment)
{
IASTNode rightOp = assigment.Expression;
// if right operator is just an identifier or a value, then assign it immediately
if (rightOp.Type == E_NODE_TYPE.NT_VALUE)
{
int[] assignedValue = (rightOp as IValueASTNode).Value;
mEnvironment.Assign(assigment.Id.Name, assignedValue);
return(assignedValue);
}
if (rightOp.Type == E_NODE_TYPE.NT_IDENTIFIER)
{
string id = (rightOp as IIdentifierASTNode).Name;
int[] assignedValue = mEnvironment.Get(id);
mEnvironment.Assign(assigment.Id.Name, assignedValue);
return(assignedValue);
}
// common case
Object value = assigment.Expression.Accept(this);
mEnvironment.Assign(assigment.Id.Name, (int[])value);
return(value);
}
public string VisitAssigmentNode(IAssigmentASTNode assigment)
{
StringBuilder assigmentStr = new StringBuilder();
assigmentStr.AppendFormat("{0} <- {1}", assigment.Id.Name, assigment.Expression.Accept(this));
return(assigmentStr.ToString());
}
