Antlr4.Analysis.LeftRecursiveRuleAnalyzer.SetAltAssoc C# (CSharp) Method

        public override void SetAltAssoc(AltAST t, int alt)
        {
            ASSOC assoc = ASSOC.left;
            if (t.GetOptions() != null)
            {
                string a = t.GetOptionString("assoc");
                if (a != null)
                {
                    if (a.Equals(ASSOC.right.ToString()))
                    {
                        assoc = ASSOC.right;
                    }
                    else if (a.Equals(ASSOC.left.ToString()))
                    {
                        assoc = ASSOC.left;
                    }
                    else
                    {
                        tool.errMgr.GrammarError(ErrorType.ILLEGAL_OPTION_VALUE, t.g.fileName, t.GetOptionAST("assoc").Token, "assoc", assoc);
                    }
                }
            }

            if (altAssociativity.ContainsKey(alt) && altAssociativity[alt] != assoc)
            {
                tool.errMgr.ToolError(ErrorType.INTERNAL_ERROR, "all operators of alt " + alt + " of left-recursive rule must have same associativity");
            }
            altAssociativity[alt] = assoc;

            //		System.out.println("setAltAssoc: op " + alt + ": " + t.getText()+", assoc="+assoc);
        }