This class extends BufferedTokenStream with functionality to filter token streams to tokens on a particular channel (tokens where IToken.Channel() returns a particular value).

This token stream provides access to all tokens by index or when calling methods like BufferedTokenStream.GetText() . The channel filtering is only used for code accessing tokens via the lookahead methods BufferedTokenStream.La(int) , Lt(int) , and Lb(int) .

By default, tokens are placed on the default channel ( TokenConstants.DefaultChannel ), but may be reassigned by using the ->channel(HIDDEN) lexer command, or by using an embedded action to call Lexer.Channel .

Note: lexer rules which use the ->skip lexer command or call Lexer.Skip() do not produce tokens at all, so input text matched by such a rule will not be available as part of the token stream, regardless of channel.

Inheritance: BufferedTokenStream
        /// <summary>
        /// Exports the specified component to a temporary file, loads, and then parses the exported file.
        /// </summary>
        /// <param name="component"></param>
        public IDictionary<Tuple<string, DeclarationType>, Attributes> Parse(VBComponent component)
        {
            var path = _exporter.Export(component);
            if (!File.Exists(path))
            {
                // a document component without any code wouldn't be exported (file would be empty anyway).
                return new Dictionary<Tuple<string, DeclarationType>, Attributes>();
            }

            var code = File.ReadAllText(path);
            File.Delete(path);

            var type = component.Type == vbext_ComponentType.vbext_ct_StdModule
                ? DeclarationType.Module
                : DeclarationType.Class;
            var listener = new AttributeListener(Tuple.Create(component.Name, type));

            var stream = new AntlrInputStream(code);
            var lexer = new VBALexer(stream);
            var tokens = new CommonTokenStream(lexer);
            var parser = new VBAParser(tokens);

            // parse tree isn't usable for declarations because
            // line numbers are offset due to module header and attributes
            // (these don't show up in the VBE, that's why we're parsing an exported file)
            var tree = parser.startRule();
            ParseTreeWalker.Default.Walk(listener, tree);

            return listener.Attributes;
        }
        public Questionnaire BuildAST(string inputString)
        {
            MemoryStream inputStream = new MemoryStream(Encoding.UTF8.GetBytes(inputString ?? ""));

            AntlrInputStream antlrInputStream = new AntlrInputStream(inputStream);
            QLLexer lexer = new QLLexer(antlrInputStream);
            CommonTokenStream tokens = new CommonTokenStream(lexer);
            _parser = new QLParser(tokens);

            //Replaxe lexer/parser error listeners
            lexer.RemoveErrorListeners();
            _parser.RemoveErrorListeners();
            lexer.AddErrorListener(new LexerErrorListener() { OnError = LexerErrors.Add });
            _parser.AddErrorListener(new ParserErrorListener() { OnError = ParserErrors.Add });

            //set manager on partial parser class
            _parser.SetIdManager(Memory);

            //build AST
            _parseTree = _parser.questionnaire();
            AST = _parser.GetAST();

            //check for lexer/parser errors
            if (!LexerErrors.Any() && !ParserErrors.Any())
            {
                TypeChecker.Run(AST);
            }

            return AST;
        }
Example #3
0
        private static ParserState ParseGrammar(ICharStream stream, IExportHandle?export)
        {
            var state = new ParserState()
            {
                Exporter = export ?? new MockExportHandle()
            };
            var lexer  = new UnitsGrammarLexer(stream);
            var tokens = new Antlr4.Runtime.CommonTokenStream(lexer);
            var parser = new UnitsGrammarParser(tokens)
            {
                BuildParseTree = true
            };

            parser.AddParseListener(new SemanticUnitsListener(state));
            try
            {
                Antlr4.Runtime.Tree.IParseTree tree = parser.prog();
            }
            catch (HandleException he)
            {
                Console.WriteLine($"Error[#{he.ErrorCode}] on line {parser.CurrentToken.Line}: {he.Message}");
                throw;
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error on line {parser.CurrentToken.Line}: {ex.Message}");
                throw;
            }
            return(state);
        }
Example #4
0
        public ValueSpecification evaluateExpression(Dictionary<string, ValueSpecification> c)
        {
            MascaretApplication.Instance.VRComponentFactory.Log("Evaluate Expression");

            foreach(KeyValuePair<string,ValueSpecification> val in c)
            {
                string valueS = "NotDef";
                ValueSpecification value = val.Value;
                if (value.GetType().ToString() == "Mascaret.InstanceValue")
                    valueS = ((InstanceValue)value).SpecValue.getFullName();
                else
                    MascaretApplication.Instance.VRComponentFactory.Log(value.GetType().ToString());

                MascaretApplication.Instance.VRComponentFactory.Log("Context : " + val.Key + " = " + valueS);
            }

            OCLExpressionLexer lex = new OCLExpressionLexer(new AntlrInputStream(expressionValue));
            CommonTokenStream tokens = new CommonTokenStream(lex);
            OCLExpressionParser parser = new OCLExpressionParser(tokens);
            parser.context = c;
            parser.expression();
            MascaretApplication.Instance.VRComponentFactory.Log("Parsing  : " + expressionValue);
            MascaretApplication.Instance.VRComponentFactory.Log("Nb Erreur : " + parser.NumberOfSyntaxErrors);

            return (LiteralBoolean)(parser.value);
        }
Example #5
0
        public static void Main(string[] args)
        {
            var path = @"C:\Users\alexander.higgins\source\repos\ILDisassembler\MSILParser\IlDisassembler.il";
            var text = File.ReadAllText(path);

            var stream = new Antlr4.Runtime.AntlrInputStream(text);
            var lexer  = new MSILLexer((ICharStream)stream);

            var tokenStream = new CommonTokenStream(lexer);
            var parser      = new MSILParser(tokenStream);

            parser.BuildParseTree = true;

            var ctx = parser.decls();

            MSILParser.StartContext start = parser.start();

            var classDecs = parser.start();

            var vistor = new MsilVisitor();

            vistor.Visit(start);
            var decl = parser.decl();

            vistor.Visit(decl);
            //parser.d
        }
Example #6
0
 protected void Build(string input)
 {
     Inputstream = new AntlrInputStream(input);
     Lexer = new QLLexer(Inputstream);
     Tokenstream = new CommonTokenStream(Lexer);
     Parser = new QLParser(Tokenstream);
 }
        public static bool TryGetLineStatements(string text, int lineNumber, out IList<IParseTree> statementTrees, out IList<IToken> tokens)
        {
            Contract.Requires<ArgumentNullException>(text != null, "text");
            Contract.Requires<ArgumentOutOfRangeException>(lineNumber >= 0);

            try
            {
                AntlrInputStream input = new AntlrInputStream(text);
                JavaLexer lexer = new JavaLexer(new JavaUnicodeStreamV4(input));
                CommonTokenStream tokenStream = new CommonTokenStream(lexer);
                JavaParser parser = new JavaParser(tokenStream);

                parser.Interpreter.PredictionMode = PredictionMode.Sll;
                parser.BuildParseTree = true;
                JavaParser.CompilationUnitContext result = parser.compilationUnit();

                statementTrees = null;
                tokens = tokenStream.GetTokens();

                AssociatedTreeListener listener = new AssociatedTreeListener(lineNumber, tokens);
                ParseTreeWalker.Default.Walk(listener, result);
                statementTrees = listener.StatementTrees;

                return true;
            }
            catch (Exception e)
            {
                if (ErrorHandler.IsCriticalException(e))
                    throw;

                statementTrees = null;
                tokens = null;
                return false;
            }
        }
Example #8
0
        /// <summary>
        /// run the reader
        /// </summary>
        public bool Process()
        {
            if (_input != null)
            {
                try
                {
                    otCSVLexer _lexer = new otCSVLexer(_input);
                    _lexer.Delimiter = _delimiter;
                    // wrap a token-stream around the lexer
                    Antlr4.Runtime.CommonTokenStream tokens = new Antlr4.Runtime.CommonTokenStream(_lexer);
                    // create the aParser
                    otCSVParser aParser = new otCSVParser(tokens);
                    aParser.RemoveErrorListeners();
                    aParser.AddErrorListener(new ErrorListener());
                    otCSVParser.CsvbufferContext aTree = aParser.csvbuffer();
                    // walk the parse tree
                    DataBuilder aListener = new DataBuilder(aParser);
                    Antlr4.Runtime.Tree.ParseTreeWalker.Default.Walk(aListener, aTree);
                    // result
                    _header = aListener.Header;
                    _rows   = aListener.Rows;
                    return(true);
                } catch (Exception ex) {
                    return(false);
                }
            }

            return(false);
        }
Example #9
0
        private void button1_Click(object sender, EventArgs e)
        {
            textBox2.Text = "";
            sPrograma     = this.textBox1.Text;
            var entrada = sPrograma + Environment.NewLine;

            byte[]             byteArray  = Encoding.ASCII.GetBytes(entrada);
            MemoryStream       stream     = new MemoryStream(byteArray);
            var                parametro1 = new AntlrInputStream(entrada);
            SIC_gramaticaLexer lex        = new SIC_gramaticaLexer(parametro1);

            //CREAMOS UN LEXER CON LA CADENA QUE ESCRIBIO EL USUARIO
            Antlr4.Runtime.CommonTokenStream tokens = new Antlr4.Runtime.CommonTokenStream(lex);
            //CREAMOS LOS TOKENS SEGUN EL LEXER CREADO
            SIC_gramaticaParser parser = new SIC_gramaticaParser(tokens);

            //CREAMOS EL PARSER CON LOS TOKENS CREADOS
            try
            {
                //parser.prog();
                this.separarPrograma();
                this.separarEtiquetas();
                this.separarInstrucciones();
                this.separDirecciones();
                //this.separDirecciones();
                this.buscarErrores();

                this.crearArchivo();
            }
            catch (Exception error)
            {
                //Console.Error.WriteLine(e.StackTrace);
                MessageBox.Show("A ocurrido un error inesperado " + error.Message);
            }
        }
        protected override void ReParseImpl()
        {
            var outputWindow = OutputWindowService.TryGetPane(PredefinedOutputWindowPanes.TvlIntellisense);

            Stopwatch stopwatch = Stopwatch.StartNew();

            string filename = "<Unknown File>";
            ITextDocument textDocument = TextDocument;
            if (textDocument != null)
                filename = textDocument.FilePath;

            var snapshot = TextBuffer.CurrentSnapshot;
            var input = new SnapshotCharStream(snapshot, new Span(0, snapshot.Length));
            var lexer = new PhpLexer(input);
            lexer.TokenFactory = new SnapshotTokenFactory(snapshot, lexer);
            var tokens = new CommonTokenStream(lexer);

            var parser = new PhpParser(tokens);
            parser.BuildParseTree = true;

            List<ParseErrorEventArgs> errors = new List<ParseErrorEventArgs>();
            parser.AddErrorListener(new ErrorListener(filename, errors, outputWindow));
            var result = parser.compileUnit();

            OutliningTreesListener listener = new OutliningTreesListener();
            ParseTreeWalker.Default.Walk(listener, result);

            OnParseComplete(new PhpOutliningParseResultEventArgs(snapshot, errors, stopwatch.Elapsed, tokens.GetTokens(), result, listener.OutliningTrees));
        }
        internal static AntlrParseResultEventArgs ParseSnapshot(ITextSnapshot snapshot)
        {
            Stopwatch timer = Stopwatch.StartNew();

            ITokenSource tokenSource = new GrammarLexer(new AntlrInputStream(snapshot.GetText()));
            CommonTokenStream tokenStream = new CommonTokenStream(tokenSource);
            GrammarParser.GrammarSpecContext parseResult;
            GrammarParser parser = new GrammarParser(tokenStream);
            List<ParseErrorEventArgs> errors = new List<ParseErrorEventArgs>();
            try
            {
                parser.Interpreter.PredictionMode = PredictionMode.Sll;
                parser.RemoveErrorListeners();
                parser.BuildParseTree = true;
                parser.ErrorHandler = new BailErrorStrategy();
                parseResult = parser.grammarSpec();
            }
            catch (ParseCanceledException ex)
            {
                if (!(ex.InnerException is RecognitionException))
                    throw;

                tokenStream.Reset();
                parser.Interpreter.PredictionMode = PredictionMode.Ll;
                //parser.AddErrorListener(DescriptiveErrorListener.Default);
                parser.SetInputStream(tokenStream);
                parser.ErrorHandler = new DefaultErrorStrategy();
                parseResult = parser.grammarSpec();
            }

            return new AntlrParseResultEventArgs(snapshot, errors, timer.Elapsed, tokenStream.GetTokens(), parseResult);
        }
Example #12
0
        public void ParsesEmptyForm()
        {
            var code = @"
VERSION 5.00
Begin {C62A69F0-16DC-11CE-9E98-00AA00574A4F} Form1 
   Caption         =   ""Form1""
   ClientHeight    =   2640
   ClientLeft      =   45
   ClientTop       =   375
   ClientWidth     =   4710
   OleObjectBlob   =   ""Form1.frx"":0000
   StartUpPosition =   1  'CenterOwner
End
Attribute VB_Name = ""Form1""
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
";
            var stream = new AntlrInputStream(code);
            var lexer = new VBALexer(stream);
            var tokens = new CommonTokenStream(lexer);
            var parser = new VBAParser(tokens);
            parser.ErrorListeners.Clear();
            parser.ErrorListeners.Add(new ExceptionErrorListener());
            var tree = parser.startRule();
            Assert.IsNotNull(tree);
        }
 public static void Main(string[] args)
 {
     Stream inputStream = Console.OpenStandardInput();
     AntlrInputStream input = new AntlrInputStream(inputStream);
     CalculatorLexer lexer = new CalculatorLexer(input);
     CommonTokenStream tokens = new CommonTokenStream(lexer);
     CalculatorParser parser = new CalculatorParser(tokens);
 }
 private static void Lex(string codePath, TextWriter output)
 {
     var lexer = new AdamantLexer(codePath);
     var tokens = new CommonTokenStream(lexer);
     tokens.Fill();
     foreach(var token in tokens.GetTokens())
         output.WriteLine(Format(token));
 }
        private static Expression ParseTokens(CommonTokenStream input)
        {
            ExpressionParser.ExpressionContext startContext = new ExpressionParser(input).expression();

            ExpressionVisitor visit = new ExpressionVisitor();
            Expression expr = visit.Visit(startContext);
            return expr;
        }
 public Expression(string expression)
 {
     var input = new AntlrInputStream(expression);
     var lexer = new EstimatingExpressionEvaluatorLexer(input);
     var tokens = new CommonTokenStream(lexer);
     this.parser = new EstimatingExpressionEvaluatorParser(tokens);
     this.parseTree = parser.parse();
 }
Example #17
0
 private void Init()
 {
     var inputStream = new AntlrInputStream(new System.IO.StreamReader(_filename));
     var lexer = new PropositionalCalculusLexer(inputStream);
     var tokenStream = new CommonTokenStream(lexer);
     _parser = new PropositionalCalculusParser(tokenStream) { BuildParseTree = true };
     _tree = _parser.text();
 }
Example #18
0
 private ZealCpuDriver(ICharStream antlrInputStream)
 {
     _lexer = new ZealCpuLexer(antlrInputStream);
     _tokenStream = new CommonTokenStream(_lexer);
     _parser = new ZealCpuParser(_tokenStream);
     _parser.RemoveErrorListeners();
     _parser.AddErrorListener(new CpuErrorListener(this));
 }
 public void ParseClojure() {
     var inputStream = new AntlrInputStream("(def lst '(a b c))");
     var lexer = new ClojureLexer(inputStream);
     var commonTokenStream = new CommonTokenStream(lexer);
     var parser = new ClojureParser(commonTokenStream);
     var visitor = new CstBuilderForAntlr4(parser);
     visitor.Visit(parser.file());
     Console.WriteLine(visitor.FinishParsing());
 }
        public String GetParseTreeAsString(String rule)
        {
            AntlrInputStream input = new AntlrInputStream(rule);
            RuleSetLexer lexer = new RuleSetLexer(input);
            var tokens = new CommonTokenStream(lexer);
            RuleSetParser parser = new RuleSetParser(tokens);

            return parser.rule_set().ToStringTree(parser);
        }
Example #21
0
        public static IEnumerable<string> GenerateFile(string file)
        {
            var name = Path.GetFileNameWithoutExtension(file);
            var directory = Path.GetDirectoryName(file);
            File representation;

            using (var stream = System.IO.File.OpenRead(file))
            {
                var lexer = new GrammarLexer(new AntlrInputStream(stream));
                var tokenStream = new CommonTokenStream(lexer);
                var context = new GrammarParser(tokenStream).program();

                var dsl = new Dsl(name);
                dsl.Visit(context);
                representation = dsl.File;
            }

            var outputs = representation.GenerateSource();

            if (outputs.HasMessageContent)
            {
                if (outputs.HasMarkers)
                {
                    var path = Path.Combine(directory, $"{representation.Name}MarkerInterfaces.cs");
                    System.IO.File.WriteAllText(path, outputs.Markers);
                    yield return path;
                }

                if (outputs.HasMessages)
                {
                    var path = Path.Combine(directory, $"{representation.Name}Messages.cs");
                    System.IO.File.WriteAllText(path, outputs.Messages);
                    yield return path;
                }

                if (outputs.HasEnumerations)
                {
                    var path = Path.Combine(directory, $"{representation.Name}Enums.cs");
                    System.IO.File.WriteAllText(path, outputs.Enumerations);
                    yield return path;
                }
            }

            if (outputs.HasStateDefinitions)
            {
                var path = Path.Combine(directory, $"{representation.Name}StateSubscriptions.cs");
                System.IO.File.WriteAllText(path, outputs.StateDefinitions);
                yield return path;
            }

            if (outputs.HasEntities)
            {
                var path = Path.Combine(directory, $"{representation.Name}Entities.cs");
                System.IO.File.WriteAllText(path, outputs.Entities);
                yield return path;
            }
        }
        public static List<Expression> getConstraints()
        {
            List<Expression> pathConstraints = new List<Expression>();

            FileStream fileStream = new FileStream(@"c:\example2.txt", FileMode.Open, FileAccess.Read);
            AntlrInputStream input = new AntlrInputStream(fileStream);
            VBGrammarLexer lexer = new VBGrammarLexer(input);
            CommonTokenStream tokens = new CommonTokenStream(lexer);
            VBGrammarParser parser = new VBGrammarParser(tokens);
            IParseTree tree = parser.startRule();
            //Console.WriteLine(tree.ToStringTree(parser));

            // Use visitor pattern to get "raw" constraints
            VbaTreeVisitor eval = new VbaTreeVisitor();
            Expression exp = eval.Visit(tree);
            List<RawConstraint> rawConstraints = eval.rawConstraints;

            // Create negated expressions for ELSE blocks
            RawConstraint.updateElseBlocks(rawConstraints);

            // Update constraints to transform into binary tree and get leaf nodes
            RawConstraint.updateParents(rawConstraints);
            List<RawConstraint> leafNodes = RawConstraint.getLeafNodes(rawConstraints);

            // For each leaf node, work the way up to generate PathConstraints
            foreach (RawConstraint leaf in leafNodes)
            {
                var parentLine = leaf.ParentLineNumber;
                if (leaf.Expr == null) { continue; }

                // find parent
                RawConstraint parent = findParent(rawConstraints, parentLine);

                // AND with parent
                BinaryExpression binExp = (BinaryExpression)leaf.Expr;
                while (parent != null)
                {
                    if (parent.Expr == null)
                    {
                        break;
                    }
                    else
                    {
                        binExp = BinaryExpression.And(binExp, parent.Expr);
                    }

                    parent = findParent(rawConstraints, parent.ParentLineNumber);
                }

                pathConstraints.Add(binExp);
                // Console.WriteLine("Leaf: " + leaf.Expr);
                // Console.WriteLine("AND: " + binExp);
            }

            return pathConstraints;
        }
Example #23
0
 /// <summary>
 /// Using http://programming-pages.com/2013/12/14/antlr-4-with-c-and-visual-studio-2012/ as a guide.
 /// </summary>
 /// <param name="args"></param>
 static void Main(string[] args)
 {
     string test = "a = 10*10";
     var input = new AntlrInputStream(test);
     var lexer = new calculatorLexer(input);
     CommonTokenStream tokens = new CommonTokenStream(lexer);
     var parser = new calculatorParser(tokens);
     var tree = parser.equation();
     Console.WriteLine(tree.ToStringTree(parser));
 }
 public Library TranslateLibrary(string source)
 {
     var inputStream = new AntlrInputStream(source);
     var lexer = new cqlLexer(inputStream);
     var tokenStream = new CommonTokenStream(lexer);
     var parser = new cqlParser(tokenStream);
     var parseTree = parser.logic();
     var visitor = new cqlTranslationVisitor();
     return visitor.Visit(parseTree) as Library;
 }
 public IEnumerable<NodeSelector> Parse(string source)
 {
     var inputStream = new AntlrInputStream(source);
     var lexer = new TreeSelectorLexer(inputStream);
     var commonTokenStream = new CommonTokenStream(lexer);
     var parser = new TreeSelectorParser(commonTokenStream);
     var context = parser.init();
     var visitor = new TreeSelectorVisitor();
     return visitor.VisitInit(context);
 }
        public static ObjectTree.Tree Parse2(CommonTokenStream input)
        {
            Logger.LogAnalyzer("Parse twee file ...");
            Twee.StartContext startContext = new Twee(input).start();

            TweeVisitor visit = new TweeVisitor();
            visit.Visit(startContext);
            Logger.LogAnalyzer("Convert parse tree into object tree ...");
            return visit.Tree;
        }
Example #27
0
 /*
  * There's one fairly important difference between mod resolution in rustc and what we do.
  * Given following code:
  * mod bar { mod a; } mod bar { mod b; }
  * We will merget this to mod bar { mod a; mod b; }, but rustc will error out.
  */
 public static ModuleImport ParseImports(ICharStream stream)
 {
     var lexer = new ModuleLexer(stream);
     var tokens = new CommonTokenStream(lexer);
     var parser = new ModuleParser(tokens);
     BodyContext root = parser.body();
     var imports = new ModuleImport();
     TraverseForImports(root, imports);
     return imports;
 }
Example #28
0
        public InterfaceExtruder(string objcFileContent)
        {
            content = objcFileContent;
            var input = new AntlrInputStream (content);
            lexer = new ObjCLexer (input);
            tokens = new CommonTokenStream (lexer);
            parser = new ObjCParser (tokens);

            listner = new ObjCListnerImpl ();
            walker = new ParseTreeWalker ();
        }
Example #29
0
 /// <summary>
 /// Parses the specified input.
 /// </summary>
 /// <param name="input">The input.</param>
 /// <returns>The AST for the input</returns>
 /// <exception cref="System.ArgumentNullException">input</exception>
 public INode Parse(string input)
 {
     if (string.IsNullOrEmpty(input)) throw new ArgumentNullException("input");
     AntlrInputStream InputStream = new AntlrInputStream(input);
     PNZRLexer Lexer = new PNZRLexer(InputStream);
     CommonTokenStream TokenStream = new CommonTokenStream(Lexer);
     PNZRParser Parser = new PNZRParser(TokenStream);
     IParseTree Tree = Parser.program();
     PNZRVisitor Visitor = new PNZRVisitor();
     return Visitor.Visit(Tree);
 }
 public static LinearIntegerExpression parseLinearExpression(String input)
 {
     var stream = new AntlrInputStream(input);
     var lexer = new SymbolicStringsLexer(stream);
     var tokens = new CommonTokenStream(lexer);
     var parser = new SymbolicStringsParser(tokens);
     parser.BuildParseTree = true;
     var tree = parser.integer();
     if (parser.NumberOfSyntaxErrors == 0)
         return tree.value;
     return null;
 }
Example #31
0
        public string Tokenize(string fileContent)
        {
            AntlrInputStream inputStream = new AntlrInputStream(fileContent);
            CPP14Lexer       lexer       = new CPP14Lexer(inputStream);

            Antlr4.Runtime.CommonTokenStream tokenStream = new Antlr4.Runtime.CommonTokenStream(lexer);
            tokenStream.Fill();
            string result = "";

            IList <Antlr4.Runtime.IToken> tokens = tokenStream.GetTokens();

            foreach (var token in tokens)
            {
                result += (token.Type == CPP14Lexer.Identifier) ? "ID" : token.Text;
            }

            result = result.Replace("<EOF>", "");
            return(result);
        }
        public TextRange Parse(TextSnapshotRange snapshotRange, ActiproLex.ILexerTarget parseTarget)
        {
            //System.Diagnostics.Debug.WriteLine("LexParse " + snapshotRange.ToString());
            int index = snapshotRange.StartOffset;
            int ix    = index;

            parseTarget.OnPreParse(ref ix);

            if (parseTarget.HasInitialContext)
            {
            }
            else
            {
                int l = snapshotRange.EndOffset - index;
                ITextSnapshotReader reader = snapshotRange.Snapshot.GetReader(index);
                if (reader.Offset != index)
                {
                    throw new System.Exception("What??!!?");
                }
                StringBuilder text = new StringBuilder();
                var           read = reader.ReadText(l);
                text.Append(read);
                //System.Diagnostics.Debug.WriteLine($"Parse read {read.Length} chars: {text.ToString()}");

                var lexer  = new SBLexer(new Antlr.AntlrInputStream(text.ToString()));
                var tokens = new Antlr.CommonTokenStream(lexer);
                tokens.Fill();
                foreach (var token in tokens.GetTokens())
                {
                    if (token.Type >= 0)
                    {
                        parseTarget.OnTokenParsed(new SyntaxEditorAntlrToken(token, index, snapshotRange.StartLine.Index), null);
                    }
                }
            }

            parseTarget.OnPostParse(snapshotRange.EndOffset);

            return(snapshotRange.TextRange);
        }
Example #33
0
        protected override void ReParseImpl()
        {
            var outputWindow = OutputWindowService.TryGetPane(PredefinedOutputWindowPanes.TvlIntellisense);

            Stopwatch stopwatch = Stopwatch.StartNew();

            string        filename     = "<Unknown File>";
            ITextDocument textDocument = TextDocument;

            if (textDocument != null)
            {
                filename = textDocument.FilePath;
            }

            var snapshot = TextBuffer.CurrentSnapshot;
            var input    = new SnapshotCharStream(snapshot, new Span(0, snapshot.Length));
            var lexer    = new PhpLexer(input);

            lexer.TokenFactory = new SnapshotTokenFactory(snapshot, lexer);
            var tokens = new CommonTokenStream(lexer);

            var parser = new PhpParser(tokens);

            parser.BuildParseTree = true;

            List <ParseErrorEventArgs> errors = new List <ParseErrorEventArgs>();

            parser.AddErrorListener(new ErrorListener(filename, errors, outputWindow));
            var result = parser.compileUnit();

            OutliningTreesListener listener = new OutliningTreesListener();

            ParseTreeWalker.Default.Walk(listener, result);

            OnParseComplete(new PhpOutliningParseResultEventArgs(snapshot, errors, stopwatch.Elapsed, tokens.GetTokens(), result, listener.OutliningTrees));
        }
Example #34
0
        ///<summary>
        /// Constructor.
        ///</summary>
        public DomainProblem(string domainfile, string problemfile) : this()
        {
            using (var domstream = new StreamReader(domainfile)) {
                var inp    = new Antlr4.Runtime.AntlrInputStream(domstream);
                var lexer  = new pddlLexer(inp);
                var stream = new Antlr4.Runtime.CommonTokenStream(lexer);
                var parser = new pddlParser(stream);
                var tree   = parser.domain();
                this.domain = new DomainListener();
                var walker = new Antlr4.Runtime.Tree.ParseTreeWalker();
                walker.Walk(this.domain, tree);
            }

            using (var probstream = new StreamReader(problemfile)) {
                var inp    = new Antlr4.Runtime.AntlrInputStream(probstream);
                var lexer  = new pddlLexer(inp);
                var stream = new Antlr4.Runtime.CommonTokenStream(lexer);
                var parser = new pddlParser(stream);
                var tree   = parser.problem();
                this.problem = new ProblemListener();
                var walker = new Antlr4.Runtime.Tree.ParseTreeWalker();
                walker.Walk(this.problem, tree);
            }
        }
Example #35
0
        /// <summary>
        /// Parse the specification from string input into objects
        /// </summary>
        /// <param name="spec">string input of the model</param>
        /// <param name="option">option for LTL parsing, usually it is an empty string</param>
        protected virtual void ParseSpec(string spec, string options)
        {
            System.Diagnostics.Debug.WriteLine("parsing spec... ");

            IsParsing = true;

            if (GlobalConstantDatabase == null)
            {
                GlobalConstantDatabase = new Dictionary <string, Expression>();
            }

            // Start parsing ADL
            AntlrInputStream inputStream = new AntlrInputStream(spec);
            ADLLexer         speakLexer  = new ADLLexer(inputStream);

            Antlr4.Runtime.CommonTokenStream commonTokenStream = new Antlr4.Runtime.CommonTokenStream(speakLexer);

            ADL_Parser.ADLParser parser = new ADL_Parser.ADLParser(commonTokenStream);

            ADLVisitor visitor = new ADLVisitor();

            Object           element;
            StatementContext statement;
            CSPGenerator     generator = new CSPGenerator(this);

            while (true)
            {
                statement = parser.statement();

                // parsing architecture elements
                if ((element = statement.archelement()) != null)
                {
                    element = visitor.Visit((ArchelementContext)element);

                    if (element is Component)
                    {
                        Component comp = (Component)element;
                        Console.WriteLine(comp.ToString());
                        ComponentDatabase.Add(comp.Name, comp);
                    }
                    else if (element is Connector)
                    {
                        Connector conn = ((Connector)element);
                        Console.WriteLine(conn.ToString());
                        ConnectorDatabase.Add(conn.Name, conn);
                    }
                    else if (element is SystemConfig)
                    {
                        Console.WriteLine(((SystemConfig)element).ToString());
                        // Console.WriteLine("system:"+((SystemConfig)element).ToString());
                        generator.parse((SystemConfig)element);
                    }

                    // parsing assetion
                }
                else if ((element = statement.assertion()) != null)
                {
                    AssertionExpr assertion = (AssertionExpr)visitor.VisitAssertion((AssertionContext)element);
                    Console.WriteLine(assertion.ToString());
                    generator.AddAssertion(assertion, options);
                }
                else
                {
                    break;
                }
            }

            // End parsing ADL


            StaticAnalysis();
            CheckingConflictingEventsAndVariables();

            foreach (KeyValuePair <string, Definition> pair in DefinitionDatabase)
            {
                List <string> gVar = pair.Value.GlobalVars;

                int i = 0;
                while (i < gVar.Count)
                {
                    //Console.WriteLine("parsed " + gVar[i]);
                    if (SpecValuation.Variables != null && !SpecValuation.Variables.ContainsKey(gVar[i]))
                    {
                        gVar.RemoveAt(i);
                    }
                    else
                    {
                        i++;
                    }
                }
            }

            //get the relevant channels;
            if (ChannelDatabase.Count > 0)
            {
                SyncrhonousChannelNames = new List <string>(0);
                Dictionary <string, ChannelQueue> newChannelDatabase = new Dictionary <string, ChannelQueue>();

                foreach (KeyValuePair <string, ChannelQueue> pair in ChannelDatabase)
                {
                    if (pair.Value.Size == 0)
                    {
                        SyncrhonousChannelNames.Add(pair.Key);
                    }
                    else
                    {
                        newChannelDatabase.Add(pair.Key, pair.Value);
                    }
                }

                SpecValuation.Channels = newChannelDatabase;
                HasSyncrhonousChannel  = SyncrhonousChannelNames.Count > 0;
            }

            foreach (KeyValuePair <string, AssertionBase> entry in AssertionDatabase)
            {
                entry.Value.Initialize(this);
            }

            CheckVariableRange();
            // Console.WriteLine("Finish parsing spec....................");
            Console.WriteLine(this.GetSpecification());
        }
Example #36
0
 public void Lex(string script)
 {
     _lexer = new CSharpLexer(new Antlr4.Runtime.AntlrInputStream(script));
     Ts     = new Antlr4.Runtime.CommonTokenStream(_lexer, CSharpLexer.DefaultTokenChannel);
     Ts.Fill();
 }
        private static Document Build(
            AntlrDocumentBuilder antlrDocumentBuilder,
            string data )
        {
            using( MemoryStream memoryStream = new MemoryStream( Encoding.UTF8.GetBytes( data ) ) )
            using( StreamReader streamReader = new StreamReader( memoryStream ) )
            {
                AntlrInputStream inputStream = new AntlrInputStream( streamReader );

                GraphQLLexer lexer = new GraphQLLexer( inputStream );
                if( antlrDocumentBuilder.LexerErrorListeners != null )
                {
                    lexer.RemoveErrorListeners();
                    antlrDocumentBuilder.LexerErrorListeners.Apply( x => lexer.AddErrorListener( x ) );
                }

                CommonTokenStream tokenStream = new CommonTokenStream( lexer );
                GraphQLParser parser = new GraphQLParser( tokenStream );
                if( antlrDocumentBuilder.ParserErrorListeners != null )
                {
                    parser.RemoveErrorListeners();
                    antlrDocumentBuilder.ParserErrorListeners.Apply( x => parser.AddErrorListener( x ) );
                }

                GraphQLVisitor vistor = new GraphQLVisitor();

                return vistor.Visit( parser.document() ) as Document;
            }
            
        }
Example #38
-1
        public static CsharpParseResults InvokeParse(string fileName)
        {
            if (string.IsNullOrWhiteSpace(fileName))
                return null;
            if (!System.IO.File.Exists(fileName))
                return null;

            var tr = System.IO.File.OpenRead(fileName);
            var input = new AntlrInputStream(tr);
            var lexer = new CSharp4Lexer(input);
            var tokens = new CommonTokenStream(lexer);
            var parser = new CSharp4Parser(tokens);

            var tree = parser.compilation_unit();

            var walker = new ParseTreeWalker();
            var loader = new CsharpParseTree();

            walker.Walk(loader, tree);

            var results = loader.Results;

            tr.Close();

            return results;
        }
Example #39
-1
        internal void LoadCommandStack(string Script)
        {

            // Clear the current stack //
            this.Commands.Clear();
            this._CompileErrorMessages.Clear();

            // Create a token stream and do lexal analysis //
            AntlrInputStream TextStream = new AntlrInputStream(Script);
            HScriptLexer HorseLexer = new HScriptLexer(TextStream);

            // Parse the script //
            CommonTokenStream HorseTokenStream = new CommonTokenStream(HorseLexer);
            HScriptParser HorseParser = new HScriptParser(HorseTokenStream);
            HorseParser.RemoveErrorListeners();
            HorseParser.AddErrorListener(new ParserErrorListener());
            
            // Create an executer object //
            CommandVisitor processor = new CommandVisitor(this.Home);

            // Load the call stack //
            try
            {
                foreach (HScriptParser.CommandContext context in HorseParser.compile_unit().command_set().command())
                {
                    this.Commands.Add(context);
                }
            }
            catch (Exception e)
            {
                this._CompileErrorMessages.Add(e.Message);
            }

        }
Example #40
-1
        private void btnParse_Click(object sender, EventArgs e)
        {
            txtOutput.Clear();
            string inputString = txtInput.Text;
            MemoryStream inputStream = new MemoryStream(Encoding.UTF8.GetBytes(inputString ?? ""));

            AntlrInputStream input = new AntlrInputStream(inputStream);
            QLLexer lexer = new QLLexer(input);
            CommonTokenStream tokens = new CommonTokenStream(lexer);
            QLParser parser = new QLParser(tokens);

            lexer.RemoveErrorListeners();
            parser.RemoveErrorListeners();

            lexer.AddErrorListener(new LexerErrorListener(){OnError = WriteError});
            parser.AddErrorListener(new ParserErrorListener(){OnError = WriteError});

            IParseTree tree = parser.questionnaire();

            //if (parser.NumberOfSyntaxErrors > 0)
            //    txtOutput.Text += string.Format("Parser errors found: {0}", parser.NumberOfSyntaxErrors);

            QLVisitor visitor = new QLVisitor();
            visitor.Visit(tree);

            txtOutput.Text += string.Format(@"{0}{0} Generated parse tree:
                                              {0} {1}
                                              {0} {2}"
                                                , Environment.NewLine
                                                , tree.ToStringTree(parser)
                                                , visitor.Visit(tree));
        }