/// <summary>
/// Parser for Formal
/// </summary>
/// <returns>Parsed Formal</returns>
public Formal ParseFormal()
{
Formal formal = new Formal();
CurrentToken = TokenStream.NextToken();
formal.SetIdentifier(CurrentToken.GetValue().ToString());
return(formal);
}
/// <summary>
/// Interpret FuncBindAssignment
/// </summary>
/// <param name="assignment">FuncBindAssignment to interpret</param>
public override void Visit(FuncBindAssignment assignment)
{ //Make a function of this binding and add it to SymbolTable
FunctionDefinition functionDefinition = new FunctionDefinition();
functionDefinition.SetIdentifier(assignment.GetIdentifier());
functionDefinition.AddStatement(assignment.GetStatement());
//Convert identifiers to formals
foreach (String id in assignment.GetIdentifiers())
{
Formal frml = new Formal();
frml.SetIdentifier(id);
functionDefinition.AddFormal(frml);
}
//Create new SymbolTable for function
FunctionSymbolTable.Add(functionDefinition, (SymbolTable)SymbolTable.Clone());
//Add function to SymbolTable
SymbolTable.AddFunctionDefinition(functionDefinition);
}
/// <summary>
/// Visit FuncBindAssignment
/// </summary>
/// <param name="assignment">FuncBindAssignment to check</param>
public override void Visit(FuncBindAssignment assignment)
{
//FuncBind is a function, so let checking do by FunctionDefinition visitor
FunctionDefinition function = new FunctionDefinition();
function.SetIdentifier(assignment.GetIdentifier());
foreach (String identifier in assignment.GetIdentifiers())
{
Formal formal = new Formal();
formal.SetIdentifier(identifier);
function.AddFormal(formal);
}
function.AddStatement(assignment.GetStatement());
//Check this new function
function.AcceptVisitor(this);
//Add to SymbolTable
SymbolTable.AddFunctionDefinition(function);
}