private void Visit(FunctionDeclarationStmt declarationStmt) // TODO tarkista että palauttaa oikeasti jotain
{
if (!Symbols.ExistsInCurrentScope(declarationStmt.Identifier))
{
int currentScope = Symbols.CurrentScope;
int procedureScope = Symbols.EnterScope();
//ReturnTypeStack.Push(new TypeInfo(declarationStmt.ReturnType));
var parameterSymbols = new List <ParameterSymbol>();
foreach (var parameter in declarationStmt.Parameters)
{
var parameterSymbol = new ParameterSymbol(parameter, procedureScope);
Symbols.AddSymbol(parameterSymbol);
parameterSymbols.Add(parameterSymbol);
}
var funcSymbol = new FunctionSymbol(declarationStmt, parameterSymbols, currentScope);
Symbols.AddSymbol(funcSymbol);
FunctionStack.Push(funcSymbol);
declarationStmt.DeclarationSymbol = funcSymbol;
Visit(declarationStmt.ProcedureBlock, false);
Symbols.LeaveScope();
//ReturnTypeStack.Pop();
FunctionStack.Pop();
}
else
{
AddError(string.Format("'{0}' is already declared in current scope", declarationStmt.Identifier), declarationStmt);
}
}
private FunctionDeclarationStmt ParseFunctionDeclaration()
{
Match(TokenType.KwFunction);
FunctionDeclarationStmt statement = new FunctionDeclarationStmt(AcceptedToken);
statement.Identifier = ParseIdentifier();
Match(TokenType.LParen);
statement.Parameters = ParseParameters();
Match(TokenType.RParen);
Match(TokenType.Colon);
statement.ReturnType = ParseType();
Match(TokenType.LineTerm);
statement.ProcedureBlock = ParseBlock();
return(statement);
}
public FunctionSymbol(FunctionDeclarationStmt declaration, List <ParameterSymbol> parameters, int scope)
: base(declaration, parameters, scope)
{
}