Example #1
0
        public static string ParseVerlaufArray2String(MyArrayList parseList)
        {
            string parseverlaufStr = "";

            if (parseList != null)
            {
                for (int i = 0; i < parseList.Count; i++)
                {
                    MyArrayList actStack = (MyArrayList)parseList[i];
                    if (actStack != null)
                    {
                        for (int j = 0; j < actStack.Count; j++)
                        {
                            ButtomUpParseStack.buStackElement stkElm = (ButtomUpParseStack.buStackElement)actStack[j];
                            if (stkElm.IsRuleElement)
                            {
                                RuleElement rl = stkElm.GetRule;
                                if (rl.IsTerminal())
                                {
                                    parseverlaufStr += "'" + rl.GetToken() + "'";
                                }
                                else
                                {
                                    parseverlaufStr += rl.GetToken();
                                }
                                parseverlaufStr += " ";
                            }
                            else
                            {
                                // parseverlaufStr += stkElm.GetState.ToString();
                                // parseverlaufStr+=" ";
                            }
                        }
                        parseverlaufStr += "\n";
                    }
                }
            }
            return(parseverlaufStr);
        }
Example #2
0
        public ASTElement Parse(string Input)
        {
            m_ParseVarlauf = "";

            Input += m_EofSign;
            TerminalMatcher tm = new TerminalMatcher(Input, m_pt.Terminals);

            RuleTerminal ReadTerminal = tm.GetNextTerminal();
            bool         bAccept      = false;

            while (!bAccept && ReadTerminal != null && !m_ps.IsEmpty && !ReadTerminal.Equals(m_EofSign))
            {
                string tmpVerlauf = ReadTerminal.GetToken() + " ; " + m_ps.StackValues;
                m_ParseVerlaufArray.Add(m_ps.StackArray);

                ButtomUpParseStack.buStackElement stkElm = m_ps.Look();

                if (stkElm != null)
                {
                    if (stkElm.IsRuleElement)
                    {
                        tmpVerlauf += "err";
                    }
                    else
                    {
                        int State = stkElm.GetState;
                        ButtomUpParseTabelle.ActionEntry ae = m_pt.Get(ReadTerminal, State);
                        if (ae != null)
                        {
                            if (ae.GetAction == ButtomUpParseTabelle.Actions.SHIFT)
                            {
                                tmpVerlauf += "; s " + ae.NextState.ToString();
                                m_ps.PushShift(ReadTerminal, ae.NextState);
                                ReadTerminal = tm.GetNextTerminal();
                            }
                            else if (ae.GetAction == ButtomUpParseTabelle.Actions.REDUCE)
                            {
                                int sm = ae.NextState;
                                tmpVerlauf += "; r " + ae.NextState.ToString();

                                if (sm < m_ParseTable.AllRules.Count)
                                {
                                    BNFRule rl    = (BNFRule)m_ParseTable.AllRules[sm];
                                    int     RlLen = rl.RuleLength();
                                    for (int i = 0; i < RlLen; i++)
                                    {
                                        m_ps.Pop2();
                                    }
                                    ButtomUpParseStack.buStackElement stkLook = m_ps.Look();
                                    if (stkLook != null)
                                    {
                                        int nxtState = m_ParseTable.GetGotoState(rl.GetStart(), stkLook.GetState);
                                        m_ps.PushReduce(rl.GetStart(), nxtState);
                                        tmpVerlauf += "; " + rl.GetRuleString();
                                    }
                                }
                            }
                            else if (ae.GetAction == ButtomUpParseTabelle.Actions.JUMP)
                            {
                                tmpVerlauf += "; err";
                            }
                            else if (ae.GetAction == ButtomUpParseTabelle.Actions.ACCEPT)
                            {
                                tmpVerlauf += "; acc";
                                bAccept     = true;
                            }
                        }
                    }
                }
                m_ParseVarlauf += tmpVerlauf + "\n";
            }

            return(m_ps.ASTRoot);
        }