C# (CSharp) Pliant.Ebnf EbnfGrammar Exemples

Exemple #1

Fichier : EbnfParser.cs Projet : DinkDev/Pliant

#pragma warning disable CC0091 // Use static method
        public EbnfDefinition Parse(string ebnf)
        {
            var grammar     = new EbnfGrammar();
            var parseEngine = new ParseEngine(
                grammar,
                new ParseEngineOptions(
                    optimizeRightRecursion: true,
                    loggingEnabled: false));
            var parseRunner = new ParseRunner(parseEngine, ebnf);

            while (!parseRunner.EndOfStream())
            {
                if (!parseRunner.Read())
                {
                    throw new Exception(
                              $"Unable to parse Ebnf. Error at line {parseRunner.Line}, column {parseRunner.Column}.");
                }
            }
            if (!parseEngine.IsAccepted())
            {
                throw new Exception(
                          $"Ebnf parse not accepted. Error at line {parseRunner.Line}, column {parseRunner.Column}.");
            }

            var parseForest = parseEngine.GetParseForestRootNode();

            var parseTree = new InternalTreeNode(
                parseForest as IInternalForestNode,
                new SelectFirstChildDisambiguationAlgorithm());

            var ebnfVisitor = new EbnfVisitor();

            parseTree.Accept(ebnfVisitor);
            return(ebnfVisitor.Definition);
        }

Exemple #2

        public IEbnfDefinition Parse(string ebnf)
        {
            var grammar     = new EbnfGrammar();
            var parseEngine = new ParseEngine(
                grammar,
                new ParseEngineOptions());
            var parseRunner = new ParseRunner(parseEngine, ebnf);

            while (!parseRunner.EndOfStream())
            {
                if (!parseRunner.Read())
                {
                    throw new Exception(
                              $"Unable to parse Ebnf. Error at line {parseRunner.Line}, column {parseRunner.Column}.");
                }
            }
            if (!parseEngine.IsAccepted())
            {
                throw new Exception(
                          $"Ebnf parse not accepted. Error at line {parseRunner.Line}, column {parseRunner.Column}.");
            }

            var parseTree = parseEngine.GetParseTree();

            var ebnfVisitor = new EbnfVisitor();

            parseTree.Accept(ebnfVisitor);
            return(ebnfVisitor.Definition);
        }

Exemple #3

Fichier : EbnfParser.cs Projet : bilsaboob/Pliant

#pragma warning disable CC0091 // Use static method
        public EbnfDefinition Parse(string ebnf)
        {
            var grammar = new EbnfGrammar();
            var parseEngine = new ParseEngine(grammar, new ParseEngineOptions(optimizeRightRecursion: true));
            var parseRunner = new ParseRunner(parseEngine, ebnf);
            while (!parseRunner.EndOfStream())
            {
                if (!parseRunner.Read())
                    throw new Exception(
                        $"Unable to parse Ebnf. Error at position {parseRunner.Position}.");
            }
            if (!parseEngine.IsAccepted())
                throw new Exception(
                    $"Unable to parse Ebnf. Error at position {parseRunner.Position}");

            var parseForest = parseEngine.GetParseForestRootNode();

            var parseTree = new InternalTreeNode(
                    parseForest as IInternalForestNode,
                    new SelectFirstChildDisambiguationAlgorithm());

            var ebnfVisitor = new EbnfVisitor();
            parseTree.Accept(ebnfVisitor);
            return ebnfVisitor.Definition;            
        }