public void ParseFuncBindAssingmentTest()
{
//Create parser
StatementParser statementParser = new StatementParser(Init("home(test1, test2) = {}"));
FuncBindAssignment parsedFuncAssignment = statementParser.ParseFuncBindAssignment();
//Test FuncBindAssignment
Assert.AreEqual("home", parsedFuncAssignment.GetIdentifier());
Assert.AreEqual(2, parsedFuncAssignment.GetIdentifiers().Count);
String[] identifierArray = parsedFuncAssignment.GetIdentifiers().ToArray();
Assert.AreEqual("test1", identifierArray[0]);
Assert.AreEqual("test2", identifierArray[1]);
Assert.AreEqual(typeof(BlockStatement), parsedFuncAssignment.GetStatement().GetType());
BlockStatement statement = (BlockStatement)parsedFuncAssignment.GetStatement();
Assert.AreEqual(0, statement.GetStatements().Count);
}
/// <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);
}
/// <summary>
/// Parser for FuncBindAssignment
/// </summary>
/// <returns>Parsed FuncBindAssignment</returns>
public FuncBindAssignment ParseFuncBindAssignment()
{
FuncBindAssignment funcBindAssignment = new FuncBindAssignment();
//Parse identifier
CurrentToken = TokenStream.NextToken();
funcBindAssignment.SetIdentifier(CurrentToken.GetValue().ToString());
//Skip ( token
NextToken("(", "identifier(identifier1, identifier2) = statement;", '(');
//Parse identifiers
while (TokenStream.HasNext())
{
if (TokenStream.HasNext() && TokenStream.Peek(1).GetValue().ToString() == ")")
{ //No more identifiers
break;
}
else if (TokenStream.Peek(1).GetValue().ToString() == ",")
{
//Skip , token
NextToken(",", "(identifier1, identifier2)", ',');
}
CurrentToken = TokenStream.NextToken();
funcBindAssignment.AddIdentifier(CurrentToken.GetValue().ToString());
}
//Skip ) token
NextToken(")", "identifier(identifier1, identifier2) = statement;", ')');
//Skip = token
NextToken("=", "identifier(identifier1, identifier2) = statement;", '=');
//Parse statement
funcBindAssignment.SetStatement(ParseStatement());
return(funcBindAssignment);
}
public virtual void Visit(FuncBindAssignment assignment)
{
VisitSubNodes(assignment);
}
