public GrammarData(Grammar grammar)
{
if (grammar == null)
throw new ArgumentNullException(nameof(grammar));
Grammar = grammar;
AugmentedRoots = new List<GrammarDefinition>();
_allElements = new HashSet<GrammarElement>();
GrammarReductionsMapping = new Dictionary<GrammarDefinition, List<GrammarReduction>>();
AllReductions = new List<GrammarReduction>();
foreach (var rootDefinition in grammar.RootDefinitions)
{
var augmentedRoot = new GrammarDefinition(rootDefinition.Name + "'", rootDefinition + Grammar.Eof);
if (rootDefinition == grammar.DefaultRoot)
DefaultAugmentedRoot = augmentedRoot;
AugmentedRoots.Add(augmentedRoot);
AddReductions(augmentedRoot);
}
if(DefaultAugmentedRoot==null)
throw new InvalidOperationException("Default root of grammar is not present in the root definitions collection.");
AllElements = new ReadOnlyCollection<GrammarElement>(_allElements.ToArray());
}
public ParserContext(AutomatonSourceParser parser, Grammar grammar, Lexer lexer)
{
Parser = parser;
Grammar = grammar;
Lexer = lexer;
ParserStack = new Stack<ParserNode>();
SyntaxErrors = new List<SyntaxError>();
}
private static void TestSerializer(Grammar grammar)
{
var data = new GrammarData(grammar);
var serializer = new ParserAutomatonSerializer(data);
var result = GrammarCompiler.Compile(data);
using (var stream = new MemoryStream())
{
serializer.Serialize(stream, result.Automaton);
stream.Position = 0;
var newAutomaton = serializer.Deserialize(stream);
Assert.AreEqual(result.Automaton.DefaultInitialState.Id, newAutomaton.DefaultInitialState.Id);
Assert.AreEqual(result.Automaton.States.Count, newAutomaton.States.Count);
for (int index = 0; index < result.Automaton.States.Count; index++)
{
var expectedState = result.Automaton.States[index];
var actualState = newAutomaton.States[index];
ValidateState(expectedState, actualState);
}
}
}
public ParserAutomaton(Grammar grammar)
{
Grammar = grammar;
States = new List<ParserState>();
InitialStates = new Dictionary<GrammarDefinition, ParserState>();
}
public AutomatonSourceParser(Grammar grammar)
: this(GrammarCompiler.Compile(new GrammarData(grammar)).Automaton)
{
}
public static GrammarCompilationResult Compile(Grammar grammar)
{
return Compile(new GrammarData(grammar));
}
public DeserializerContext(Grammar grammar, BinaryReader reader)
{
Reader = reader;
Automaton = new ParserAutomaton(grammar);
}