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);
}
protected override bool GenerateParseTable()
{
MyArrayList Terminals = GetAllTerminals();
Terminals.Add(new RuleTerminal(m_EofTerminal, null));
MyArrayList Tokens = GetDifStartTokens();
MyArrayList column = new MyArrayList();
for (int i = 0; i < Terminals.Count; i++)
{
RuleElement re = (RuleElement)Terminals[i];
column.Add(re);
}
for (int i = 0; i < Tokens.Count; i++)
{
RuleStart rs = (RuleStart)Tokens[i];
column.Add(rs);
}
m_bupt = new ButtomUpParseTabelle(column, Terminals, m_Huellen.Count);
for (int i = 0; i < m_GotoTable.Count; i++)
{
GotoEntry ge = (GotoEntry)m_GotoTable[i];
RuleElement re = ge.TokenSymbol;
if (re.IsTerminal())
{
ButtomUpParseTabelle.ActionEntry buptAE = new ButtomUpParseTabelle.ActionEntry(ButtomUpParseTabelle.Actions.SHIFT, ge.JumpToState);
m_bupt.Add(re, ge.ThisState, buptAE);
}
else
{
ButtomUpParseTabelle.ActionEntry buptAE = new ButtomUpParseTabelle.ActionEntry(ButtomUpParseTabelle.Actions.JUMP, ge.JumpToState);
m_bupt.Add(re, ge.ThisState, buptAE);
}
}
bool dblEntry = false;
for (int i = 0; i < m_Huellen.Count; i++)
{
MyArrayList ActHuelle = (MyArrayList)m_Huellen[i];
for (int j = 0; j < ActHuelle.Count; j++)
{
LRElement lrm = (LRElement)ActHuelle[j];
RuleElement re = GetRuleElement(lrm);
if (re == null)
{
BNFRule rl = (BNFRule)m_Rules[lrm.RulePos];
MyArrayList flws = rl.FollowSet;
if (flws != null)
{
for (int z = 0; z < flws.Count; z++)
{
RuleElement flw_re = (RuleElement)flws[z];
ButtomUpParseTabelle.ActionEntry buptAE = new ButtomUpParseTabelle.ActionEntry(ButtomUpParseTabelle.Actions.REDUCE, lrm.RulePos);
ButtomUpParseTabelle.ActionEntry ae = m_bupt.Get(flw_re, i);
if (ae == null)
{
m_bupt.Add(flw_re, i, buptAE);
}
else
{
if (ae.GetAction != ButtomUpParseTabelle.Actions.ACCEPT)
{
dblEntry = true;
}
}
}
if (rl.GetStart().GetToken().Equals(m_StartSign))
{
ButtomUpParseTabelle.ActionEntry buptAE = new ButtomUpParseTabelle.ActionEntry(ButtomUpParseTabelle.Actions.ACCEPT, lrm.RulePos);
m_bupt.Add(m_EofTerminal, i, buptAE);
}
}
}
}
}
return(!dblEntry);
}
