/// <summary>
/// Creates parser, from given grammar
/// (Accepts all CFG forms)
/// </summary>
/// <param name="grammar">Grammar specifing parsing rules</param>
public Parser(GrammarBase grammar)
{
_grammar = grammar;
grammar.Build();
var nonTerminals = grammar.CollectNonTerminals(grammar.Root);
//prepare edges
foreach (var nonTerm in nonTerminals)
{
foreach (var sequence in nonTerm.Rule.Sequences)
{
var activeLabel = new ActiveLabel(sequence);
_activeChains.Add(sequence, activeLabel);
}
}
buildEdgeTransitions();
//set root transitions
_rootTransitions = getRootTransitions().ToArray();
}
