protected bool Equals(FunctionNode other)
{
return base.Equals(other)
&& string.Equals(Name, other.Name)
&& IsPure.Equals(other.IsPure)
&& Equals(ReturnTypeSignature, other.ReturnTypeSignature);
}
/// <summary>
/// fun_def = [ "pure" ] "fun" identifier [ ":" type ] fun_args "->" block
/// </summary>
private FunctionNode parseFunDef()
{
var node = new FunctionNode();
node.IsPure = check(LexemType.Pure);
if (!check(LexemType.Fun))
{
if (node.IsPure)
error(ParserMessages.FunctionDefExpected);
else
return null;
}
node.Name = ensure(LexemType.Identifier, ParserMessages.FunctionIdentifierExpected).Value;
if (check(LexemType.Colon))
node.ReturnTypeSignature = ensure(parseType, ParserMessages.FunctionReturnExpected);
node.Arguments = attempt(() => parseFunArgs(true)) ?? new List<FunctionArgument>();
ensure(LexemType.Arrow, ParserMessages.SymbolExpected, "->");
node.Body = ensure(parseBlock, ParserMessages.FunctionBodyExpected);
return node;
}