private EbnfLexerRuleTerm VisitLexerRuleTermNode(IInternalTreeNode node)
{
EbnfLexerRuleFactor factor = null;
EbnfLexerRuleTerm term = null;
for (int c = 0; c < node.Children.Count; c++)
{
var child = node.Children[c];
if (child.NodeType != TreeNodeType.Internal)
{
continue;
}
var internalNode = child as IInternalTreeNode;
var symbolValue = internalNode.Symbol.Value;
if (EbnfGrammar.LexerRuleFactor == symbolValue)
{
factor = VisitLexerRuleFactorNode(internalNode);
}
if (EbnfGrammar.LexerRuleTerm == symbolValue)
{
term = VisitLexerRuleTermNode(internalNode);
}
}
if (term == null)
{
return(new EbnfLexerRuleTerm(factor));
}
return(new EbnfLexerRuleTermConcatenation(factor, term));
}
INfa LexerRuleFactor(EbnfLexerRuleFactor factor)
{
switch (factor.NodeType)
{
case EbnfNodeType.EbnfLexerRuleFactorLiteral:
return(LexerRuleFactorLiteral(factor as EbnfLexerRuleFactorLiteral));
case EbnfNodeType.EbnfLexerRuleFactorRegex:
return(LexerRuleFactorRegex(factor as EbnfLexerRuleFactorRegex));
default:
throw new InvalidOperationException(
$"Invalid EbnfLexerRuleFactor node type detected. Found {Enum.GetName(typeof(EbnfNodeType), factor.NodeType)}, expected EbnfLexerRuleFactorLiteral or EbnfLexerRuleFactorRegex");
}
}
public EbnfLexerRuleTermConcatenation(EbnfLexerRuleFactor factor, EbnfLexerRuleTerm term)
: base(factor)
{
Term = term;
_hashCode = ComputeHashCode();
}
public EbnfLexerRuleTerm(EbnfLexerRuleFactor factor)
{
Factor = factor;
_hashCode = ComputeHashCode();
}
public EbnfLexerRuleTermConcatenation(EbnfLexerRuleFactor factor, EbnfLexerRuleTerm term)
: base(factor)
{
Term = term;
_hashCode = ComputeHashCode();
}
public EbnfLexerRuleTerm(EbnfLexerRuleFactor factor)
{
Factor = factor;
_hashCode = ComputeHashCode();
}
