/// <summary>
/// 7 <VOpt> ::= <V> <VOpt>;
/// <para>8 <VOpt> ::= "|" <V> <VOpt>;</para>
/// <para>9 <VOpt ::= null;</para>
/// </summary>
/// <param name="vlist"></param>
/// <param name="candidate"></param>
/// <param name="syntaxTree"></param>
private static object GetGrammarVOpt(RightSection vlist,
ProductionNodeList candidate, SyntaxTree <EnumTokenTypeCG, EnumVTypeCG, TreeNodeValueCG> syntaxTree)
{//<VOpt> ::= <V> <VOpt> | "|" <V> <VOpt> | null; // 7 8 9
if (syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VOpt___tail_nullLeave() ||
syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VOpt___tail_identifierLeave() ||
syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VOpt___tail_numberLeave() ||
syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VOpt___tail_constStringLeave() ||
syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VOpt___constStringLeave() ||
syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VOpt___tail_lessThan_Leave()
)
{
var v = GetGrammarV(syntaxTree.Children[0]);
candidate.Add(v);
return(GetGrammarVOpt(vlist, candidate, syntaxTree.Children[1]));
}
else if (syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VOpt___tail_or_Leave())
{
ProductionNodeList newCandidate = new ProductionNodeList();
vlist.Add(newCandidate);
var v = GetGrammarV(syntaxTree.Children[1]);
newCandidate.Add(v);
return(GetGrammarVOpt(vlist, newCandidate, syntaxTree.Children[2]));
}
else if (syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VOpt___tail_semicolon_Leave())
{
return(GetGrammarnull(syntaxTree.Children[0]));
}
else
{
return(string.Format("{0}", syntaxTree.CandidateFunc.ToString()));
}
}
/// <summary>
/// 获取此产生式列表的列表（产生式右部）的复制品
/// </summary>
/// <returns></returns>
public object Clone()
{
var result = new RightSection();
foreach (var element in this)
{
result.Add(element.Clone() as ProductionNodeList);
}
return(result);
}
/// <summary>
/// From
/// </summary>
/// <param name="xContextfreeProduction"></param>
/// <returns></returns>
public static ContextfreeProduction From(XElement xContextfreeProduction)
{
if (xContextfreeProduction == null)
{
return(null);
}
if (xContextfreeProduction.Name != strContextfreeProduction)
{
return(null);
}
var result = new ContextfreeProduction();
result.Left = ProductionNode.From(xContextfreeProduction.Element(ProductionNode.strProductionNode));
result.RightCollection = RightSection.From(xContextfreeProduction.Element(RightSection.strRightSection));
return(result);
}
/// <summary>
/// From
/// </summary>
/// <param name="xProductionNodeListList"></param>
/// <returns></returns>
public static RightSection From(XElement xProductionNodeListList)
{
if (xProductionNodeListList == null)
{
return(null);
}
if (xProductionNodeListList.Name != strRightSection)
{
return(null);
}
var result = new RightSection();
result.AddRange(
from item in xProductionNodeListList.Elements(ProductionNodeList.strCandidate)
select ProductionNodeList.From(item)
);
return(result);
}
/// <summary>
/// 4 <VList> ::= <V> <VOpt>;
/// </summary>
/// <param name="syntaxTree"></param>
private static RightSection GetGrammarVList(SyntaxTree <EnumTokenTypeCG, EnumVTypeCG, TreeNodeValueCG> syntaxTree)
{//<VList> ::= <V> <VOpt>; 4
RightSection vlist = new RightSection();
if (syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VList___constStringLeave() ||
syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VList___tail_constStringLeave() ||
syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VList___tail_identifierLeave() ||
syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VList___tail_lessThan_Leave() ||
syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VList___tail_nullLeave() ||
syntaxTree.CandidateFunc == LL1SyntaxParserCG.GetFuncParsecase_VList___tail_numberLeave())
{
var candidate = new ProductionNodeList();
vlist.Add(candidate);
var v = GetGrammarV(syntaxTree.Children[0]);
candidate.Add(v);
var info = GetGrammarVOpt(vlist, candidate, syntaxTree.Children[1]);
}
return(vlist);
}
