public static FunctionHeader Header(MatchIterator iterator)
{
iterator.AssertTokenType(TokenType.Type, out Token typeToken);
iterator.AssertTokenType(TokenType.Name, out Token nameToken);
iterator.AssertKeySymbol(Symbols.OpenBracket, out _);
Token open = (Token)iterator.Current;
CollectedParameters parameters;
if (iterator.Next(out parameters))
{
iterator.MoveNext();
}
else
{
parameters = new CollectedParameters();
}
iterator.AssertKeySymbol(Symbols.CloseBracket, out _);
Token end = (Token)iterator.Current;
iterator.AssertEnd();
FunctionTypeSignature typeSignature = new FunctionTypeSignature(parameters.Types);
FunctionSignature signature = new FunctionSignature(
FunctionSignature.Local, nameToken.Content, typeSignature);
FunctionHeader result = new FunctionHeader(
typeToken, nameToken, open, end, signature, parameters.Names);
return(result);
}
public static CollectedParameters Parameters(MatchIterator iterator)
{
List <SprakType> parameterTypes = new List <SprakType>();
List <string> parameterNames = new List <string>();
CollectedParameters result
= new CollectedParameters(parameterTypes, parameterNames);
if (iterator.AtEnd())
{
return(result);
}
do
{
iterator.AssertType(out SprakType type);
iterator.AssertName(out string name);
parameterTypes.Add(type);
parameterNames.Add(name);
}while (iterator.NextIsKeySymbol(Symbols.Comma));
iterator.AssertEnd();
return(result);
}