private ExpressionNode(RelationNode relation1, List <RelationNode> relations, List <IToken> tokens, IScopedTable <IEntityType, string> parentTypeTable)
{
Relation1 = relation1;
Relations = relations;
Tokens = tokens;
ParentTypeTable = parentTypeTable;
}
public static Either <ParseException, Pair <List <IToken>, ExpressionNode> > Parse(List <IToken> tokens, IScopedTable <IEntityType, string> parentTypeTable)
{
var relations = new List <RelationNode>();
var tokenList = new List <IToken>();
Console.WriteLine("ExpressionNode");
var maybeRelation = RelationNode.Parse(tokens, parentTypeTable);
if (maybeRelation.IsLeft)
{
return(maybeRelation.LeftToList()[0]);
}
tokens = maybeRelation.RightToList()[0].First;
while (tokens.Count > 0)
{
if (tokens[0] is NewLineSymbolToken || tokens[0] is CommentToken)
{
tokens = tokens.Skip(1).ToList();
}
else
{
break;
}
}
while (true)
{
if (tokens.Count < 1)
{
break;
}
if (!(tokens[0] is AndKeywordToken || tokens[0] is OrKeywordToken ||
tokens[0] is XorKeywordToken))
{
break;
}
tokenList.Add(tokens[0]);
tokens = tokens.Skip(1).ToList();
var maybe2Relation = RelationNode.Parse(tokens, parentTypeTable);
if (maybe2Relation.IsLeft)
{
return(maybe2Relation.LeftToList()[0]);
}
relations.Add(maybe2Relation.RightToList()[0].Second);
tokens = maybe2Relation.RightToList()[0].First;
while (tokens.Count > 0)
{
if (tokens[0] is NewLineSymbolToken || tokens[0] is CommentToken)
{
tokens = tokens.Skip(1).ToList();
}
else
{
break;
}
}
}
while (tokens.Count > 0)
{
if (tokens[0] is NewLineSymbolToken || tokens[0] is CommentToken ||
tokens[0] is SemicolonSymbolToken)
{
tokens = tokens.Skip(1).ToList();
}
else
{
break;
}
}
return(new Pair <List <IToken>, ExpressionNode> (
tokens,
new ExpressionNode(maybeRelation.RightToList()[0].Second, relations, tokenList, parentTypeTable)
));
}