Exemplo n.º 1
0
        public InterpretTraceTransition([NotNull] Transition transition, [NotNull] NetworkInterpreter interpreter)
        {
            Requires.NotNull(transition, nameof(transition));
            Requires.NotNull(interpreter, nameof(interpreter));

            Transition  = transition;
            Interpreter = interpreter;
        }
Exemplo n.º 2
0
        public InterpretTraceTransition(Transition transition, NetworkInterpreter interpreter)
        {
            Contract.Requires <ArgumentNullException>(transition != null, "transition");
            Contract.Requires <ArgumentNullException>(interpreter != null, "interpreter");

            Transition  = transition;
            Interpreter = interpreter;
        }
Exemplo n.º 3
0
        public DeterministicTraceTransition([NotNull] DeterministicTransition transition, int symbol, int symbolPosition, [NotNull] NetworkInterpreter interpreter)
        {
            Requires.NotNull(transition, nameof(transition));
            Requires.NotNull(interpreter, nameof(interpreter));

            Transition  = transition;
            Interpreter = interpreter;
            Symbol      = symbol;
            TokenIndex  = symbolPosition;
        }
        public DeterministicTraceTransition(DeterministicTransition transition, int symbol, int symbolPosition, NetworkInterpreter interpreter)
        {
            Contract.Requires<ArgumentNullException>(transition != null, "transition");
            Contract.Requires<ArgumentNullException>(interpreter != null, "interpreter");

            Transition = transition;
            Interpreter = interpreter;
            Symbol = symbol;
            TokenIndex = symbolPosition;
        }
        public DeterministicTraceTransition(DeterministicTransition transition, int symbol, int symbolPosition, NetworkInterpreter interpreter)
        {
            Contract.Requires <ArgumentNullException>(transition != null, "transition");
            Contract.Requires <ArgumentNullException>(interpreter != null, "interpreter");

            Transition  = transition;
            Interpreter = interpreter;
            Symbol      = symbol;
            TokenIndex  = symbolPosition;
        }
Exemplo n.º 6
0
        public ContextFrame(State state, int?context, ContextFrame parent, NetworkInterpreter interpreter)
        {
            Contract.Requires(parent == null || parent.Context.HasValue);

            State        = state;
            Context      = context;
            Parent       = parent;
            Interpreter  = interpreter;
            _headContext = parent != null ? parent.HeadContext : context;

            int stateCode = (State != null) ? EqualityComparer <State> .Default.GetHashCode(State) : 0;

            long parentCode = (Parent != null) ? Parent.GetHashCode() * 104729 : 0;

            _hashCode = stateCode ^ (Context ?? 0) ^ parentCode.GetHashCode();
        }
Exemplo n.º 7
0
        public InterpretTraceTransition([NotNull] Transition transition, int symbol, int symbolPosition, [NotNull] NetworkInterpreter interpreter)
            : this(transition, interpreter)
        {
            Debug.Assert(transition != null);
            Debug.Assert(interpreter != null);

            Symbol     = symbol;
            TokenIndex = symbolPosition;
        }
        public void AugmentQuickInfoSession(IQuickInfoSession session, IList<object> quickInfoContent, out ITrackingSpan applicableToSpan)
        {
            applicableToSpan = null;
            if (session == null || quickInfoContent == null)
                return;

            if (session.TextView.TextBuffer == this.TextBuffer)
            {
                ITextSnapshot currentSnapshot = this.TextBuffer.CurrentSnapshot;
                SnapshotPoint? triggerPoint = session.GetTriggerPoint(currentSnapshot);
                if (!triggerPoint.HasValue)
                    return;

                #region experimental
                /* use the experimental model to locate and process the expression */
                Stopwatch stopwatch = Stopwatch.StartNew();

                // lex the entire document
                var input = new SnapshotCharStream(currentSnapshot, new Span(0, currentSnapshot.Length));
                var lexer = new AlloyLexer(input);
                var tokens = new CommonTokenStream(lexer);
                tokens.Fill();

                // locate the last token before the trigger point
                while (true)
                {
                    IToken nextToken = tokens.LT(1);
                    if (nextToken.Type == CharStreamConstants.EndOfFile)
                        break;

                    if (nextToken.StartIndex > triggerPoint.Value.Position)
                        break;

                    tokens.Consume();
                }

                switch (tokens.LA(-1))
                {
                case AlloyLexer.IDENTIFIER:
                case AlloyLexer.KW_THIS:
                case AlloyLexer.KW_UNIV:
                case AlloyLexer.KW_IDEN:
                case AlloyLexer.KW_INT2:
                case AlloyLexer.KW_SEQINT:
                case AlloyLexer.INTEGER:
                    break;

                default:
                    return;
                }

                Network network = NetworkBuilder<AlloySimplifiedAtnBuilder>.GetOrBuildNetwork();

                RuleBinding memberSelectRule = network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.BinOpExpr18);
#if DEBUG && false
                HashSet<Transition> memberSelectTransitions = new HashSet<Transition>(ObjectReferenceEqualityComparer<Transition>.Default);
                GetReachableTransitions(memberSelectRule, memberSelectTransitions);
#endif

                NetworkInterpreter interpreter = new NetworkInterpreter(network, tokens);

                interpreter.BoundaryRules.Add(memberSelectRule);
                //interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.UnaryExpression));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.LetDecl));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.NameListName));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.Ref));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.Module));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.Open));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.FactDecl));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.AssertDecl));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.FunctionName));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.CmdDecl));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.Typescope));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.EnumDecl));
                interpreter.BoundaryRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.ElseClause));

                interpreter.ExcludedStartRules.Add(network.GetRule(AlloySimplifiedAtnBuilder.RuleNames.CallArguments));

                while (interpreter.TryStepBackward())
                {
                    if (interpreter.Contexts.Count == 0)
                        break;

                    /* we want all traces to start outside the binOpExpr18 rule, which means all
                     * traces with a transition reachable from binOpExpr18 should contain a push
                     * transition with binOpExpr18's start state as its target.
                     */
                    if (interpreter.Contexts.All(context => context.BoundedStart))
                    {
                        break;
                    }
                }

                HashSet<InterpretTrace> contexts = new HashSet<InterpretTrace>(BoundedStartInterpretTraceEqualityComparer.Default);
                if (interpreter.Contexts.Count > 0)
                {
                    contexts.UnionWith(interpreter.Contexts);
                }
                else
                {
                    contexts.UnionWith(interpreter.BoundedStartContexts);
                }

                IOutputWindowPane pane = Provider.OutputWindowService.TryGetPane(PredefinedOutputWindowPanes.TvlIntellisense);
                if (pane != null)
                {
                    pane.WriteLine(string.Format("Located {0} QuickInfo expression(s) in {1}ms.", contexts.Count, stopwatch.ElapsedMilliseconds));
                }

                HashSet<Span> spans = new HashSet<Span>();
                foreach (var context in contexts)
                {
                    Span? span = null;
                    foreach (var transition in context.Transitions)
                    {
                        if (!transition.Transition.IsMatch)
                            continue;

                        IToken token = transition.Token;
                        Span tokenSpan = new Span(token.StartIndex, token.StopIndex - token.StartIndex + 1);
                        if (span == null)
                            span = tokenSpan;
                        else
                            span = Span.FromBounds(Math.Min(span.Value.Start, tokenSpan.Start), Math.Max(span.Value.End, tokenSpan.End));
                    }

                    if (span.HasValue)
                        spans.Add(span.Value);
                }

                //List<Expression> expressions = new List<Expression>();
                //HashSet<string> finalResult = new HashSet<string>();
                //SnapshotSpan? contextSpan = null;

                bool foundInfo = false;
                foreach (var span in spans)
                {
                    if (!span.IsEmpty)
                    {
                        VirtualSnapshotSpan selection = new VirtualSnapshotSpan(new SnapshotSpan(currentSnapshot, span));
                        if (!selection.IsEmpty && selection.Contains(new VirtualSnapshotPoint(triggerPoint.Value)))
                        {
                            try
                            {
                                Expression currentExpression = Provider.IntellisenseCache.ParseExpression(selection);
                                if (currentExpression != null && currentExpression.Span.HasValue && currentExpression.Span.Value.Contains(triggerPoint.Value))
                                {
                                    applicableToSpan = currentExpression.Span.Value.Snapshot.CreateTrackingSpan(currentExpression.Span.Value, SpanTrackingMode.EdgeExclusive);
                                    quickInfoContent.Add(currentExpression.ToString());
                                    foundInfo = true;
                                }
                            }
                            catch (Exception ex)
                            {
                                if (ErrorHandler.IsCriticalException(ex))
                                    throw;

                                quickInfoContent.Add(ex.Message);
                            }
                        }

                        //try
                        //{
                        //    SnapshotSpan contextSpan = new SnapshotSpan(currentSnapshot, span.Value);
                        //    Expression expression = Provider.IntellisenseCache.ParseExpression(contextSpan);
                        //    if (expression != null)
                        //        expressions.Add(expression);
                        //}
                        //catch (Exception e)
                        //{
                        //    if (ErrorHandler.IsCriticalException(e))
                        //        throw;
                        //}
                    }

                    //if (results.Count > 0)
                    //{
                    //    finalResult.UnionWith(results);
                    //    applicableToSpan = currentSnapshot.CreateTrackingSpan(span, SpanTrackingMode.EdgeExclusive);
                    //}
                }

                if (!foundInfo && spans.Count > 0)
                {
                    foreach (var span in spans)
                    {
                        if (!span.IsEmpty)
                        {
                            VirtualSnapshotSpan selection = new VirtualSnapshotSpan(new SnapshotSpan(currentSnapshot, span));
                            if (!selection.IsEmpty && selection.Contains(new VirtualSnapshotPoint(triggerPoint.Value)))
                            {
                                applicableToSpan = selection.Snapshot.CreateTrackingSpan(selection.SnapshotSpan, SpanTrackingMode.EdgeExclusive);
                                break;
                            }
                        }
                    }

                    quickInfoContent.Add("Could not parse expression.");
                }

                //foreach (var result in finalResult)
                //{
                //    quickInfoContent.Add(result);
                //}

                #endregion

#if false
                var selection = session.TextView.Selection.StreamSelectionSpan;
                if (selection.IsEmpty || !selection.Contains(new VirtualSnapshotPoint(triggerPoint.Value)))
                {
                    SnapshotSpan? expressionSpan = Provider.IntellisenseCache.GetExpressionSpan(triggerPoint.Value);
                    if (expressionSpan.HasValue)
                        selection = new VirtualSnapshotSpan(expressionSpan.Value);
                }
#endif
                //VirtualSnapshotSpan selection = new VirtualSnapshotSpan();
                //if (contextSpan.HasValue)
                //    selection = new VirtualSnapshotSpan(contextSpan.Value);

                //if (!selection.IsEmpty && selection.Contains(new VirtualSnapshotPoint(triggerPoint.Value)))
                //{
                //    applicableToSpan = selection.Snapshot.CreateTrackingSpan(selection.SnapshotSpan, SpanTrackingMode.EdgeExclusive);

                //    try
                //    {
                //        Expression currentExpression = Provider.IntellisenseCache.ParseExpression(selection);
                //        if (currentExpression != null)
                //        {
                //            SnapshotSpan? span = currentExpression.Span;
                //            if (span.HasValue)
                //                applicableToSpan = span.Value.Snapshot.CreateTrackingSpan(span.Value, SpanTrackingMode.EdgeExclusive);

                //            quickInfoContent.Add(currentExpression.ToString());
                //        }
                //        else
                //        {
                //            quickInfoContent.Add("Could not parse expression.");
                //        }
                //    }
                //    catch (Exception ex)
                //    {
                //        if (ErrorHandler.IsCriticalException(ex))
                //            throw;

                //        quickInfoContent.Add(ex.Message);
                //    }
                //}
            }
        }
Exemplo n.º 9
0
        public InterpretTraceTransition(Transition transition, int symbol, int symbolPosition, NetworkInterpreter interpreter)
            : this(transition, interpreter)
        {
            Contract.Requires(transition != null);
            Contract.Requires(interpreter != null);

            Symbol     = symbol;
            TokenIndex = symbolPosition;
        }
        private NetworkInterpreter CreateNetworkInterpreter(ITokenStream tokens)
        {
            Network network = NetworkBuilder<AlloyOutliningAtnBuilder>.GetOrBuildNetwork();

            NetworkInterpreter interpreter = new NetworkInterpreter(network, tokens);

            interpreter.BoundaryRules.Add(network.GetRule(AlloyOutliningAtnBuilder.RuleNames.AssertDecl));
            interpreter.BoundaryRules.Add(network.GetRule(AlloyOutliningAtnBuilder.RuleNames.EnumDecl));
            interpreter.BoundaryRules.Add(network.GetRule(AlloyOutliningAtnBuilder.RuleNames.FactDecl));
            interpreter.BoundaryRules.Add(network.GetRule(AlloyOutliningAtnBuilder.RuleNames.FunDecl));
            interpreter.BoundaryRules.Add(network.GetRule(AlloyOutliningAtnBuilder.RuleNames.SigDecl));

            interpreter.ExcludedStartRules.Add(network.GetRule(AlloyOutliningAtnBuilder.RuleNames.SigBody));
            interpreter.ExcludedStartRules.Add(network.GetRule(AlloyOutliningAtnBuilder.RuleNames.Block));

            return interpreter;
        }
Exemplo n.º 11
0
        public void AugmentQuickInfoSession(IQuickInfoSession session, IList<object> quickInfoContent, out ITrackingSpan applicableToSpan)
        {
            applicableToSpan = null;
            if (session == null || quickInfoContent == null)
                return;

            if (session.TextView.TextBuffer == this.TextBuffer)
            {
                ITextSnapshot currentSnapshot = this.TextBuffer.CurrentSnapshot;
                SnapshotPoint? triggerPoint = session.GetTriggerPoint(currentSnapshot);
                if (!triggerPoint.HasValue)
                    return;

                #region experimental
                /* use the experimental model to locate and process the expression */
                Stopwatch stopwatch = Stopwatch.StartNew();

                // lex the entire document
                var input = new SnapshotCharStream(currentSnapshot, new Span(0, currentSnapshot.Length));
                var lexer = new GoLexer(input);
                var tokenSource = new GoSemicolonInsertionTokenSource(lexer);
                var tokens = new CommonTokenStream(tokenSource);
                tokens.Fill();

                // locate the last token before the trigger point
                while (true)
                {
                    IToken nextToken = tokens.LT(1);
                    if (nextToken.Type == CharStreamConstants.EndOfFile)
                        break;

                    if (nextToken.StartIndex > triggerPoint.Value.Position)
                        break;

                    tokens.Consume();
                }

                switch (tokens.LA(-1))
                {
                case GoLexer.IDENTIFIER:
                //case GoLexer.KW_THIS:
                //case GoLexer.KW_UNIV:
                //case GoLexer.KW_IDEN:
                //case GoLexer.KW_INT2:
                //case GoLexer.KW_SEQINT:
                    break;

                default:
                    return;
                }

                Network network = NetworkBuilder<GoSimplifiedAtnBuilder>.GetOrBuildNetwork();

                RuleBinding memberSelectRule = network.GetRule(GoSimplifiedAtnBuilder.RuleNames.PrimaryExpr);
#if false
                HashSet<Transition> memberSelectTransitions = new HashSet<Transition>();
                GetReachableTransitions(memberSelectRule, memberSelectTransitions);
#endif

                NetworkInterpreter interpreter = new NetworkInterpreter(network, tokens);

                interpreter.BoundaryRules.Add(memberSelectRule);
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.Label));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.TypeSwitchGuard));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.FieldName));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.Receiver));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.FunctionDecl));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.BaseTypeName));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.TypeSpec));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.IdentifierList));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.MethodName));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.ParameterDecl));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.FieldIdentifierList));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.PackageName));
                interpreter.BoundaryRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.TypeName));

                interpreter.ExcludedStartRules.Add(network.GetRule(GoSimplifiedAtnBuilder.RuleNames.Block));

                while (interpreter.TryStepBackward())
                {
                    if (interpreter.Contexts.Count == 0)
                        break;

                    /* we want all traces to start outside the binOpExpr18 rule, which means all
                     * traces with a transition reachable from binOpExpr18 should contain a push
                     * transition with binOpExpr18's start state as its target.
                     */
                    if (interpreter.Contexts.All(context => context.BoundedStart))
                    {
                        break;
                    }
                }

                interpreter.CombineBoundedStartContexts();

                IOutputWindowPane pane = Provider.OutputWindowService.TryGetPane(PredefinedOutputWindowPanes.TvlIntellisense);
                if (pane != null)
                {
                    pane.WriteLine(string.Format("Located {0} QuickInfo expression(s) in {1}ms.", interpreter.Contexts.Count, stopwatch.ElapsedMilliseconds));
                }

                HashSet<string> finalResult = new HashSet<string>();
                SnapshotSpan? contextSpan = null;
                foreach (var context in interpreter.Contexts)
                {
                    Span? span = null;
                    //List<string> results = AnalyzeInterpreterTrace(context, memberSelectRule, out span);

                    foreach (var transition in context.Transitions)
                    {
                        if (!transition.Transition.IsMatch)
                            continue;

                        IToken token = transition.Token;
                        Span tokenSpan = new Span(token.StartIndex, token.StopIndex - token.StartIndex + 1);
                        if (span == null)
                            span = tokenSpan;
                        else
                            span = Span.FromBounds(Math.Min(span.Value.Start, tokenSpan.Start), Math.Max(span.Value.End, tokenSpan.End));
                    }

                    if (span.HasValue && !span.Value.IsEmpty)
                        contextSpan = new SnapshotSpan(currentSnapshot, span.Value);

                    //if (results.Count > 0)
                    //{
                    //    finalResult.UnionWith(results);
                    //    applicableToSpan = currentSnapshot.CreateTrackingSpan(span, SpanTrackingMode.EdgeExclusive);
                    //}
                }

                foreach (var result in finalResult)
                {
                    quickInfoContent.Add(result);
                }

                #endregion

#if false
                var selection = session.TextView.Selection.StreamSelectionSpan;
                if (selection.IsEmpty || !selection.Contains(new VirtualSnapshotPoint(triggerPoint.Value)))
                {
                    SnapshotSpan? expressionSpan = Provider.IntellisenseCache.GetExpressionSpan(triggerPoint.Value);
                    if (expressionSpan.HasValue)
                        selection = new VirtualSnapshotSpan(expressionSpan.Value);
                }
#endif
                VirtualSnapshotSpan selection = new VirtualSnapshotSpan();
                if (contextSpan.HasValue)
                    selection = new VirtualSnapshotSpan(contextSpan.Value);

                if (!selection.IsEmpty && selection.Contains(new VirtualSnapshotPoint(triggerPoint.Value)))
                {
                    applicableToSpan = selection.Snapshot.CreateTrackingSpan(selection.SnapshotSpan, SpanTrackingMode.EdgeExclusive);
                    quickInfoContent.Add(selection.GetText());

                    //try
                    //{
                    //    Expression currentExpression = Provider.IntellisenseCache.ParseExpression(selection);
                    //    if (currentExpression != null)
                    //    {
                    //        SnapshotSpan? span = currentExpression.Span;
                    //        if (span.HasValue)
                    //            applicableToSpan = span.Value.Snapshot.CreateTrackingSpan(span.Value, SpanTrackingMode.EdgeExclusive);

                    //        quickInfoContent.Add(currentExpression.ToString());
                    //    }
                    //    else
                    //    {
                    //        quickInfoContent.Add("Could not parse expression.");
                    //    }
                    //}
                    //catch (Exception ex)
                    //{
                    //    if (ErrorHandler.IsCriticalException(ex))
                    //        throw;

                    //    quickInfoContent.Add(ex.Message);
                    //}
                }
            }
        }