public void TestOffChannel()
{
ITokenSource lexer = // simulate input " x =34 ;\n"
new TestOffChannelTokenSource();
CommonTokenStream tokens = new CommonTokenStream(lexer);
Assert.AreEqual("x", tokens.LT(1).Text); // must skip first off channel token
tokens.Consume();
Assert.AreEqual("=", tokens.LT(1).Text);
Assert.AreEqual("x", tokens.LT(-1).Text);
tokens.Consume();
Assert.AreEqual("34", tokens.LT(1).Text);
Assert.AreEqual("=", tokens.LT(-1).Text);
tokens.Consume();
Assert.AreEqual(";", tokens.LT(1).Text);
Assert.AreEqual("34", tokens.LT(-1).Text);
tokens.Consume();
Assert.AreEqual(CharStreamConstants.EndOfFile, tokens.LA(1));
Assert.AreEqual(";", tokens.LT(-1).Text);
Assert.AreEqual("34", tokens.LT(-2).Text);
Assert.AreEqual("=", tokens.LT(-3).Text);
Assert.AreEqual("x", tokens.LT(-4).Text);
}
public IStateCollector Create(string query, int position)
{
var lexer = new QueryLexer(new AntlrInputStream(new StringReader(query)));
var tokenStream = new CommonTokenStream(new CaretTokenSource(lexer, position, new[]
{
QueryLexer.ADD_SUB, QueryLexer.MULT_DIV, QueryLexer.REL_OP, QueryLexer.LPAREN,
QueryLexer.RPAREN
}));
// we will need a random access to the input as we traverse the ATN
var tokens = new List <IToken>();
for (; ;)
{
var token = tokenStream.LT(1);
tokenStream.Consume();
tokens.Add(token);
if (token.Type == Lexer.Eof || token.Type == CaretToken.TokenType)
{
break;
}
}
Trace.Assert(tokens.Count >= 1, "tokens.Count >= 1"); // CARET
Trace.Assert(
tokens.Last().Type == CaretToken.TokenType,
"tokens.Last().Type == CaretToken.TokenType");
var parser = new QueryParser(tokenStream);
return(new StateCollector(tokens, parser));
}
public Dictionary <IToken, int> ExtractComments(string code)
{
byte[] byteArray = Encoding.UTF8.GetBytes(code);
CommonTokenStream cts_off_channel = new CommonTokenStream(
new ANTLRv4Lexer(
new AntlrInputStream(
new StreamReader(
new MemoryStream(byteArray)).ReadToEnd())),
ANTLRv4Lexer.OFF_CHANNEL);
Dictionary <IToken, int> new_list = new Dictionary <IToken, int>();
int type = InverseMap[ClassificationNameComment];
while (cts_off_channel.LA(1) != ANTLRv4Parser.Eof)
{
IToken token = cts_off_channel.LT(1);
if (token.Type == ANTLRv4Lexer.BLOCK_COMMENT ||
token.Type == ANTLRv4Lexer.LINE_COMMENT ||
token.Type == ANTLRv4Lexer.DOC_COMMENT)
{
new_list[token] = type;
}
cts_off_channel.Consume();
}
return(new_list);
}
public Dictionary <IToken, int> ExtractComments(string code)
{
byte[] byteArray = Encoding.UTF8.GetBytes(code);
CommonTokenStream cts_off_channel = new CommonTokenStream(
new RustLexer(
new AntlrInputStream(
new StreamReader(
new MemoryStream(byteArray)).ReadToEnd())),
RustLexer.OFF_CHANNEL);
var new_list = new Dictionary <IToken, int>();
var type = InverseMap[ClassificationNameComment];
while (cts_off_channel.LA(1) != RustLexer.Eof)
{
IToken token = cts_off_channel.LT(1);
if (token.Type == RustLexer.LineComment ||
token.Type == RustLexer.BlockComment
)
{
new_list[token] = type;
}
cts_off_channel.Consume();
}
return(new_list);
}
public override Dictionary <IToken, int> ExtractComments(string code)
{
if (code == null)
{
return(null);
}
byte[] byteArray = Encoding.UTF8.GetBytes(code);
var ais = new AntlrInputStream(
new StreamReader(
new MemoryStream(byteArray)).ReadToEnd());
var lexer = new W3CebnfLexer(ais);
CommonTokenStream cts_off_channel = new CommonTokenStream(lexer, W3CebnfLexer.OFF_CHANNEL);
lexer.RemoveErrorListeners();
var lexer_error_listener = new ErrorListener <int>(null, lexer, this.QuietAfter);
lexer.AddErrorListener(lexer_error_listener);
Dictionary <IToken, int> new_list = new Dictionary <IToken, int>();
int type = (int)AntlrClassifications.ClassificationComment;
while (cts_off_channel.LA(1) != W3CebnfParser.Eof)
{
IToken token = cts_off_channel.LT(1);
if (token.Type == W3CebnfParser.COMMENT)
{
new_list[token] = type;
}
cts_off_channel.Consume();
}
return(new_list);
}
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);
// }
//}
}
}
private List <LabelInfo> FindLabelsInScope(SnapshotPoint triggerPoint)
{
List <LabelInfo> labels = new List <LabelInfo>();
/* use the experimental model to locate and process the expression */
Stopwatch stopwatch = Stopwatch.StartNew();
// lex the entire document
var currentSnapshot = triggerPoint.Snapshot;
var input = new SnapshotCharStream(currentSnapshot, new Span(0, currentSnapshot.Length));
var lexer = new ANTLRLexer(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.Position)
{
break;
}
tokens.Consume();
}
bool inAction = false;
IToken triggerToken = tokens.LT(-1);
switch (triggerToken.Type)
{
case ANTLRLexer.RULE_REF:
case ANTLRLexer.TOKEN_REF:
case ANTLRLexer.DOLLAR:
break;
case ANTLRLexer.ACTION:
case ANTLRLexer.FORCED_ACTION:
case ANTLRLexer.SEMPRED:
case ANTLRLexer.ARG_ACTION:
inAction = true;
break;
default:
return(labels);
}
NetworkInterpreter interpreter = CreateNetworkInterpreter(tokens);
while (interpreter.TryStepBackward())
{
if (interpreter.Contexts.Count == 0 || interpreter.Contexts.Count > 4000)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedStart))
{
break;
}
}
if (interpreter.Failed)
{
interpreter.Contexts.Clear();
}
interpreter.CombineBoundedStartContexts();
HashSet <IToken> labelTokens = new HashSet <IToken>(TokenIndexEqualityComparer.Default);
foreach (var context in interpreter.Contexts)
{
var tokenTransitions = context.Transitions.Where(i => i.TokenIndex != null).ToList();
for (int i = 1; i < tokenTransitions.Count - 1; i++)
{
if (tokenTransitions[i].Symbol != ANTLRLexer.TOKEN_REF && tokenTransitions[i].Symbol != ANTLRLexer.RULE_REF)
{
continue;
}
// we add explicit labels, plus implicit labels if we're in an action
if (tokenTransitions[i + 1].Symbol == ANTLRLexer.ASSIGN || tokenTransitions[i + 1].Symbol == ANTLRLexer.PLUS_ASSIGN)
{
RuleBinding rule = interpreter.Network.StateRules[tokenTransitions[i + 1].Transition.SourceState.Id];
if (rule.Name == AntlrAtnBuilder.RuleNames.TreeRoot || rule.Name == AntlrAtnBuilder.RuleNames.ElementNoOptionSpec)
{
labelTokens.Add(tokenTransitions[i].Token);
}
}
else if (inAction && tokenTransitions[i - 1].Symbol != ANTLRLexer.ASSIGN && tokenTransitions[i - 1].Symbol != ANTLRLexer.PLUS_ASSIGN)
{
RuleBinding rule = interpreter.Network.StateRules[tokenTransitions[i].Transition.SourceState.Id];
if (rule.Name == AntlrAtnBuilder.RuleNames.Terminal || rule.Name == AntlrAtnBuilder.RuleNames.NotTerminal || rule.Name == AntlrAtnBuilder.RuleNames.RuleRef)
{
labelTokens.Add(tokenTransitions[i].Token);
}
}
}
}
foreach (var token in labelTokens)
{
labels.Add(new LabelInfo(token.Text, "(label) " + token.Text, new SnapshotSpan(triggerPoint.Snapshot, Span.FromBounds(token.StartIndex, token.StopIndex + 1)), StandardGlyphGroup.GlyphGroupField, Enumerable.Empty <LabelInfo>()));
}
/* add scopes */
if (inAction)
{
/* add global scopes */
IList <IToken> tokensList = tokens.GetTokens();
for (int i = 0; i < tokensList.Count - 1; i++)
{
var token = tokensList[i];
/* all global scopes appear before the first rule. before the first rule, the only place a ':' can appear is
* in the form '::' for things like @lexer::namespace{}
*/
if (token.Type == ANTLRLexer.COLON && tokensList[i + 1].Type == ANTLRLexer.COLON)
{
break;
}
if (token.Type == ANTLRLexer.SCOPE)
{
var nextToken = tokensList.Skip(i + 1).FirstOrDefault(t => t.Channel == TokenChannels.Default);
if (nextToken != null && (nextToken.Type == ANTLRLexer.RULE_REF || nextToken.Type == ANTLRLexer.TOKEN_REF))
{
// TODO: parse scope members
IToken actionToken = tokensList.Skip(nextToken.TokenIndex + 1).FirstOrDefault(t => t.Channel == TokenChannels.Default);
IEnumerable <LabelInfo> members = Enumerable.Empty <LabelInfo>();
if (actionToken != null && actionToken.Type == ANTLRLexer.ACTION)
{
IEnumerable <IToken> scopeMembers = ExtractScopeAttributes(nextToken);
members = scopeMembers.Select(member =>
{
string name = member.Text;
SnapshotSpan definition = new SnapshotSpan(triggerPoint.Snapshot, Span.FromBounds(member.StartIndex, member.StopIndex + 1));
StandardGlyphGroup glyph = StandardGlyphGroup.GlyphGroupField;
IEnumerable <LabelInfo> nestedMembers = Enumerable.Empty <LabelInfo>();
return(new LabelInfo(name, string.Empty, definition, glyph, nestedMembers));
});
}
labels.Add(new LabelInfo(nextToken.Text, "(global scope) " + nextToken.Text, new SnapshotSpan(triggerPoint.Snapshot, Span.FromBounds(nextToken.StartIndex, nextToken.StopIndex + 1)), StandardGlyphGroup.GlyphGroupNamespace, members));
}
}
}
/* add rule scopes */
// todo
}
/* add arguments and return values */
if (inAction)
{
HashSet <IToken> argumentTokens = new HashSet <IToken>(TokenIndexEqualityComparer.Default);
foreach (var context in interpreter.Contexts)
{
var tokenTransitions = context.Transitions.Where(i => i.TokenIndex != null).ToList();
for (int i = 1; i < tokenTransitions.Count; i++)
{
if (tokenTransitions[i].Symbol == ANTLRLexer.RETURNS || tokenTransitions[i].Symbol == ANTLRLexer.COLON)
{
break;
}
if (tokenTransitions[i].Symbol == ANTLRLexer.ARG_ACTION)
{
argumentTokens.Add(tokenTransitions[i].Token);
}
}
}
foreach (var token in argumentTokens)
{
IEnumerable <IToken> arguments = ExtractArguments(token);
foreach (var argument in arguments)
{
labels.Add(new LabelInfo(argument.Text, "(parameter) " + argument.Text, new SnapshotSpan(triggerPoint.Snapshot, Span.FromBounds(argument.StartIndex, argument.StopIndex + 1)), StandardGlyphGroup.GlyphGroupVariable, Enumerable.Empty <LabelInfo>()));
}
}
}
/* add return values */
if (inAction)
{
HashSet <IToken> returnTokens = new HashSet <IToken>(TokenIndexEqualityComparer.Default);
foreach (var context in interpreter.Contexts)
{
var tokenTransitions = context.Transitions.Where(i => i.TokenIndex != null).ToList();
for (int i = 1; i < tokenTransitions.Count - 1; i++)
{
if (tokenTransitions[i].Symbol == ANTLRLexer.COLON)
{
break;
}
if (tokenTransitions[i].Symbol == ANTLRLexer.RETURNS)
{
if (tokenTransitions[i + 1].Symbol == ANTLRLexer.ARG_ACTION)
{
returnTokens.Add(tokenTransitions[i + 1].Token);
}
break;
}
}
}
foreach (var token in returnTokens)
{
IEnumerable <IToken> returnValues = ExtractArguments(token);
foreach (var returnValue in returnValues)
{
labels.Add(new LabelInfo(returnValue.Text, "(return value) " + returnValue.Text, new SnapshotSpan(triggerPoint.Snapshot, Span.FromBounds(returnValue.StartIndex, returnValue.StopIndex + 1)), StandardGlyphGroup.GlyphGroupVariable, Enumerable.Empty <LabelInfo>()));
}
}
}
/* add intrinsic labels ($start, $type, $text, $enclosingRuleName) */
IToken ruleNameToken = null;
HashSet <IToken> enclosingRuleNameTokens = new HashSet <IToken>(TokenIndexEqualityComparer.Default);
foreach (var context in interpreter.Contexts)
{
var tokenTransitions = context.Transitions.Where(i => i.Symbol == ANTLRLexer.RULE_REF || i.Symbol == ANTLRLexer.TOKEN_REF).ToList();
if (!tokenTransitions.Any())
{
continue;
}
ruleNameToken = tokenTransitions.First().Token;
if (ruleNameToken != null)
{
enclosingRuleNameTokens.Add(ruleNameToken);
}
}
foreach (var token in enclosingRuleNameTokens)
{
// TODO: add members
labels.Add(new LabelInfo(token.Text, "(enclosing rule) " + token.Text, new SnapshotSpan(triggerPoint.Snapshot, Span.FromBounds(token.StartIndex, token.StopIndex + 1)), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
}
GrammarType grammarType = GrammarType.None;
int mark = tokens.Mark();
try
{
tokens.Seek(0);
bool hasGrammarType = false;
while (!hasGrammarType)
{
int la1 = tokens.LA(1);
switch (la1)
{
case ANTLRLexer.GRAMMAR:
IToken previous = tokens.LT(-1);
if (previous == null)
{
grammarType = GrammarType.Combined;
}
else if (previous.Type == ANTLRLexer.LEXER)
{
grammarType = GrammarType.Lexer;
}
else if (previous.Type == ANTLRLexer.PARSER)
{
grammarType = GrammarType.Parser;
}
else if (previous.Type == ANTLRLexer.TREE)
{
grammarType = GrammarType.TreeParser;
}
else
{
grammarType = GrammarType.None;
}
hasGrammarType = true;
break;
case CharStreamConstants.EndOfFile:
hasGrammarType = true;
break;
default:
break;
}
tokens.Consume();
}
}
finally
{
tokens.Rewind(mark);
}
if (inAction)
{
switch (grammarType)
{
case GrammarType.Combined:
if (ruleNameToken == null)
{
goto default;
}
if (ruleNameToken.Type == ANTLRLexer.RULE_REF)
{
goto case GrammarType.Parser;
}
else
{
goto case GrammarType.Lexer;
}
case GrammarType.Lexer:
labels.Add(new LabelInfo("text", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("type", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("line", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("index", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("pos", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("channel", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("start", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("stop", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("int", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
break;
case GrammarType.Parser:
labels.Add(new LabelInfo("text", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("start", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("stop", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("tree", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("st", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
break;
case GrammarType.TreeParser:
labels.Add(new LabelInfo("text", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("start", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("tree", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("st", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
break;
default:
// if we're unsure about the grammar type, include all the possible options to make sure we're covered
labels.Add(new LabelInfo("text", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("type", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("line", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("index", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("pos", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("channel", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("start", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("stop", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("int", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("tree", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
labels.Add(new LabelInfo("st", string.Empty, new SnapshotSpan(), StandardGlyphGroup.GlyphGroupIntrinsic, Enumerable.Empty <LabelInfo>()));
break;
}
}
return(labels);
}
protected override void ReParseImpl()
{
// lex the entire document to get the set of identifiers we'll need to classify
ITextSnapshot snapshot = TextBuffer.CurrentSnapshot;
var input = new SnapshotCharStream(snapshot, new Span(0, snapshot.Length));
var lexer = new GoLexer(input);
var tokenSource = new GoSemicolonInsertionTokenSource(lexer);
var tokens = new CommonTokenStream(tokenSource);
tokens.Fill();
/* Want to outline the following blocks:
* - import
* - type
* - const
* - func
*/
List <IToken> outliningKeywords = new List <IToken>();
while (tokens.LA(1) != CharStreamConstants.EndOfFile)
{
switch (tokens.LA(1))
{
case GoLexer.KW_IMPORT:
////case GoLexer.KW_TYPE:
case GoLexer.KW_CONST:
case GoLexer.KW_STRUCT:
case GoLexer.KW_FUNC:
case GoLexer.KW_VAR:
outliningKeywords.Add(tokens.LT(1));
break;
case CharStreamConstants.EndOfFile:
goto doneLexing;
default:
break;
}
tokens.Consume();
}
doneLexing:
List <ITagSpan <IOutliningRegionTag> > outliningRegions = new List <ITagSpan <IOutliningRegionTag> >();
foreach (var token in outliningKeywords)
{
tokens.Seek(token.TokenIndex);
tokens.Consume();
NetworkInterpreter interpreter = CreateNetworkInterpreter(tokens);
while (interpreter.TryStepBackward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedStart))
{
break;
}
}
interpreter.CombineBoundedStartContexts();
while (interpreter.TryStepForward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedEnd))
{
break;
}
}
interpreter.CombineBoundedEndContexts();
foreach (var context in interpreter.Contexts)
{
switch (token.Type)
{
case GoLexer.KW_IMPORT:
case GoLexer.KW_VAR:
case GoLexer.KW_CONST:
{
InterpretTraceTransition firstTransition = context.Transitions.Where(i => i.Transition.IsMatch).ElementAtOrDefault(1);
InterpretTraceTransition lastTransition = context.Transitions.LastOrDefault(i => i.Transition.IsMatch);
if (firstTransition == null || lastTransition == null)
{
continue;
}
if (firstTransition.Symbol != GoLexer.LPAREN)
{
continue;
}
var blockSpan = OutlineBlock(firstTransition.Token, lastTransition.Token, snapshot);
if (blockSpan != null)
{
outliningRegions.Add(blockSpan);
break;
}
break;
}
case GoLexer.KW_STRUCT:
case GoLexer.KW_FUNC:
{
InterpretTraceTransition firstTransition = context.Transitions.FirstOrDefault(i => i.Symbol == GoLexer.LBRACE);
InterpretTraceTransition lastTransition = context.Transitions.LastOrDefault(i => i.Transition.IsMatch);
if (firstTransition == null || lastTransition == null)
{
continue;
}
var blockSpan = OutlineBlock(firstTransition.Token, lastTransition.Token, snapshot);
if (blockSpan != null)
{
outliningRegions.Add(blockSpan);
break;
}
break;
}
}
}
}
_outliningRegions = outliningRegions;
OnTagsChanged(new SnapshotSpanEventArgs(new SnapshotSpan(snapshot, new Span(0, snapshot.Length))));
}
private void UpdateQuickInfoContent(IQuickInfoSession session, SnapshotPoint triggerPoint)
{
/* use the experimental model to locate and process the expression */
Stopwatch stopwatch = Stopwatch.StartNew();
// lex the entire document
var currentSnapshot = triggerPoint.Snapshot;
var input = new SnapshotCharStream(currentSnapshot, new Span(0, currentSnapshot.Length));
var unicodeInput = new JavaUnicodeStream(input);
var lexer = new Java2Lexer(unicodeInput);
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.Position)
{
break;
}
tokens.Consume();
}
IToken triggerToken = tokens.LT(-1);
if (triggerToken == null)
{
return;
}
switch (triggerToken.Type)
{
// symbol references
case Java2Lexer.IDENTIFIER:
case Java2Lexer.THIS:
case Java2Lexer.SUPER:
// primitive types
case Java2Lexer.BOOLEAN:
case Java2Lexer.CHAR:
case Java2Lexer.BYTE:
case Java2Lexer.SHORT:
case Java2Lexer.INT:
case Java2Lexer.LONG:
case Java2Lexer.FLOAT:
case Java2Lexer.DOUBLE:
// literals
case Java2Lexer.INTLITERAL:
case Java2Lexer.LONGLITERAL:
case Java2Lexer.FLOATLITERAL:
case Java2Lexer.DOUBLELITERAL:
case Java2Lexer.CHARLITERAL:
case Java2Lexer.STRINGLITERAL:
case Java2Lexer.TRUE:
case Java2Lexer.FALSE:
case Java2Lexer.NULL:
break;
default:
return;
}
NetworkInterpreter interpreter = CreateNetworkInterpreter(tokens);
while (interpreter.TryStepBackward())
{
if (interpreter.Contexts.Count == 0 || interpreter.Contexts.Count > 400)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedStart))
{
break;
}
}
interpreter.Contexts.RemoveAll(i => !i.BoundedStart);
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> intermediateResult = new HashSet <string>();
HashSet <string> finalResult = new HashSet <string>();
List <object> quickInfoContent = new List <object>();
foreach (var context in interpreter.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 && !span.Value.IsEmpty)
{
string text = currentSnapshot.GetText(span.Value);
if (!intermediateResult.Add(text))
{
continue;
}
AstParserRuleReturnScope <CommonTree, CommonToken> result = null;
try
{
var expressionInput = new ANTLRStringStream(text);
var expressionUnicodeInput = new JavaUnicodeStream(expressionInput);
var expressionLexer = new Java2Lexer(expressionUnicodeInput);
var expressionTokens = new CommonTokenStream(expressionLexer);
var expressionParser = new Java2Parser(expressionTokens);
result = expressionParser.primary();
// anchors experiment
Contract.Assert(TextBuffer.CurrentSnapshot == triggerPoint.Snapshot);
ClassAnchorTracker tracker = new ClassAnchorTracker(TextBuffer, null);
SnapshotSpan trackedSpan = new SnapshotSpan(triggerPoint.Snapshot, 0, triggerPoint.Position);
ITagSpan <ScopeAnchorTag>[] tags = tracker.GetTags(new NormalizedSnapshotSpanCollection(trackedSpan)).ToArray();
text = result.Tree.ToStringTree();
}
catch (RecognitionException)
{
text = "Could not parse: " + text;
}
text = text.Replace("\n", "\\n").Replace("\r", "\\r");
finalResult.Add(text);
//if (Regex.IsMatch(text, @"^[A-Za-z_]+(?:\.\w+)*$"))
//{
// NameResolutionContext resolutionContext = NameResolutionContext.Global(Provider.IntelliSenseCache);
// resolutionContext = resolutionContext.Filter(text, null, true);
// CodeElement[] matching = resolutionContext.GetMatchingElements();
// if (matching.Length > 0)
// {
// foreach (var element in matching)
// {
// element.AugmentQuickInfoSession(quickInfoContent);
// }
// }
// else
// {
// // check if this is a package
// CodePhysicalFile[] files = Provider.IntelliSenseCache.GetPackageFiles(text, true);
// if (files.Length > 0)
// {
// finalResult.Add(string.Format("package {0}", text));
// }
// else
// {
// // check if this is a type
// string typeName = text.Substring(text.LastIndexOf('.') + 1);
// CodeType[] types = Provider.IntelliSenseCache.GetTypes(typeName, true);
// foreach (var type in types)
// {
// if (type.FullName == text)
// finalResult.Add(string.Format("{0}: {1}", type.GetType().Name, type.FullName));
// }
// }
// }
//}
//else
//{
// finalResult.Add(text);
//}
}
}
ITrackingSpan applicableToSpan = null;
foreach (var result in finalResult)
{
quickInfoContent.Add(result);
}
applicableToSpan = currentSnapshot.CreateTrackingSpan(new Span(triggerToken.StartIndex, triggerToken.StopIndex - triggerToken.StartIndex + 1), 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);
//}
lock (_contentUpdateLock)
{
_triggerPoint = triggerPoint;
_applicableToSpan = applicableToSpan;
_quickInfoContent = quickInfoContent;
}
IWpfTextView wpfTextView = session.TextView as IWpfTextView;
if (wpfTextView != null && wpfTextView.VisualElement != null)
{
ITrackingPoint trackingTriggerPoint = triggerPoint.Snapshot.CreateTrackingPoint(triggerPoint.Position, PointTrackingMode.Negative);
wpfTextView.VisualElement.Dispatcher.BeginInvoke((Action <IQuickInfoSession, ITrackingPoint, bool>)RetriggerQuickInfo, session, trackingTriggerPoint, true);
}
}
protected override void ReParseImpl()
{
// lex the entire document to get the set of identifiers we'll need to classify
ITextSnapshot snapshot = TextBuffer.CurrentSnapshot;
var input = new SnapshotCharStream(snapshot, new Span(0, snapshot.Length));
var lexer = new AlloyLexer(input);
var tokens = new CommonTokenStream(lexer);
tokens.Fill();
/* Want to outline the following blocks:
* - assert
* - enum
* - fact
* - fun
* - pred
* - sig (block and body)
*/
List <IToken> outliningKeywords = new List <IToken>();
while (tokens.LA(1) != CharStreamConstants.EndOfFile)
{
switch (tokens.LA(1))
{
case AlloyLexer.KW_ASSERT:
case AlloyLexer.KW_ENUM:
case AlloyLexer.KW_FACT:
case AlloyLexer.KW_FUN:
case AlloyLexer.KW_PRED:
case AlloyLexer.KW_SIG:
outliningKeywords.Add(tokens.LT(1));
break;
case CharStreamConstants.EndOfFile:
goto doneLexing;
default:
break;
}
tokens.Consume();
}
doneLexing:
List <ITagSpan <IOutliningRegionTag> > outliningRegions = new List <ITagSpan <IOutliningRegionTag> >();
foreach (var token in outliningKeywords)
{
tokens.Seek(token.TokenIndex);
tokens.Consume();
NetworkInterpreter interpreter = CreateNetworkInterpreter(tokens);
while (interpreter.TryStepBackward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedStart))
{
break;
}
}
interpreter.CombineBoundedStartContexts();
while (interpreter.TryStepForward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedEnd))
{
break;
}
}
foreach (var context in interpreter.Contexts)
{
InterpretTraceTransition firstBraceTransition = context.Transitions.FirstOrDefault(i => i.Symbol == AlloyLexer.LBRACE);
InterpretTraceTransition lastBraceTransition = context.Transitions.LastOrDefault(i => i.Transition.IsMatch);
if (firstBraceTransition == null || lastBraceTransition == null)
{
continue;
}
if (token.Type == AlloyLexer.KW_SIG)
{
InterpretTraceTransition lastBodyBraceTransition = context.Transitions.LastOrDefault(i => i.Symbol == AlloyLexer.RBRACE && interpreter.Network.StateRules[i.Transition.SourceState.Id].Name == AlloyOutliningAtnBuilder.RuleNames.SigBody);
if (lastBodyBraceTransition != lastBraceTransition && lastBodyBraceTransition != null)
{
var bodySpan = OutlineBlock(firstBraceTransition.Token, lastBodyBraceTransition.Token, snapshot);
if (bodySpan != null)
{
outliningRegions.Add(bodySpan);
}
firstBraceTransition = context.Transitions.LastOrDefault(i => i.Symbol == AlloyLexer.LBRACE && i.TokenIndex > lastBodyBraceTransition.TokenIndex);
}
}
var blockSpan = OutlineBlock(firstBraceTransition.Token, lastBraceTransition.Token, snapshot);
if (blockSpan != null)
{
outliningRegions.Add(blockSpan);
break;
}
}
}
_outliningRegions = outliningRegions;
OnTagsChanged(new SnapshotSpanEventArgs(new SnapshotSpan(snapshot, new Span(0, snapshot.Length))));
}
protected override void ReParseImpl()
{
Stopwatch timer = Stopwatch.StartNew();
// lex the entire document to get the set of identifiers we'll need to classify
ITextSnapshot snapshot = TextBuffer.CurrentSnapshot;
var input = new SnapshotCharStream(snapshot, new Span(0, snapshot.Length));
JavaUnicodeStream inputWrapper = new JavaUnicodeStream(input);
var lexer = new Java2Lexer(inputWrapper);
var tokens = new CommonTokenStream(lexer);
tokens.Fill();
List <IToken> nameKeywords = new List <IToken>();
List <IToken> declColons = new List <IToken>();
List <IToken> identifiers = new List <IToken>();
HashSet <IToken> definitions = new HashSet <IToken>(TokenIndexEqualityComparer.Default);
HashSet <IToken> references = new HashSet <IToken>(TokenIndexEqualityComparer.Default);
GetLl2SymbolSets();
while (tokens.LA(1) != CharStreamConstants.EndOfFile)
{
// covered by the double-sided check
if (_definitionOnlySourceSet.Contains(tokens.LA(1)))
{
if (tokens.LA(2) == Java2Lexer.IDENTIFIER)
{
definitions.Add(tokens.LT(2));
}
}
else if (_referenceOnlySourceSet.Contains(tokens.LA(1)))
{
if (tokens.LA(2) == Java2Lexer.IDENTIFIER)
{
references.Add(tokens.LT(2));
}
}
if (_definitionOnlyFollowSet.Contains(tokens.LA(1)))
{
IToken previous = tokens.LT(-1);
if (previous != null && previous.Type == Java2Lexer.IDENTIFIER)
{
definitions.Add(previous);
}
}
else if (_referenceOnlyFollowSet.Contains(tokens.LA(1)))
{
IToken previous = tokens.LT(-1);
if (previous != null && previous.Type == Java2Lexer.IDENTIFIER)
{
references.Add(previous);
}
}
if (tokens.LA(2) == Java2Lexer.IDENTIFIER)
{
IntervalSet bothWaysFollowDefinition;
IntervalSet bothWaysFollowReference;
_definitionContextSet1.TryGetValue(tokens.LA(1), out bothWaysFollowDefinition);
_referenceContextSet1.TryGetValue(tokens.LA(1), out bothWaysFollowReference);
bool couldBeDef = bothWaysFollowDefinition != null && bothWaysFollowDefinition.Contains(tokens.LA(3));
bool couldBeRef = bothWaysFollowReference != null && bothWaysFollowReference.Contains(tokens.LA(3));
if (couldBeDef && !couldBeRef)
{
definitions.Add(tokens.LT(2));
}
else if (couldBeRef && !couldBeDef)
{
references.Add(tokens.LT(2));
}
}
if (tokens.LA(3) == Java2Lexer.IDENTIFIER && _definitionSourceSet.Contains(tokens.LA(2)))
{
IntervalSet sourceDefinition2;
IntervalSet sourceReference2;
_definitionSourceSet2.TryGetValue(tokens.LA(2), out sourceDefinition2);
_referenceSourceSet2.TryGetValue(tokens.LA(2), out sourceReference2);
bool couldBeDef = sourceDefinition2 != null && sourceDefinition2.Contains(tokens.LA(1));
bool couldBeRef = sourceReference2 != null && sourceReference2.Contains(tokens.LA(1));
if (couldBeDef && !couldBeRef)
{
definitions.Add(tokens.LT(3));
}
else if (couldBeRef && !couldBeDef)
{
references.Add(tokens.LT(3));
}
}
if (_definitionFollowSet.Contains(tokens.LA(1)))
{
declColons.Add(tokens.LT(1));
}
if (tokens.LA(1) == Java2Lexer.IDENTIFIER)
{
identifiers.Add(tokens.LT(1));
}
tokens.Consume();
}
foreach (var token in declColons)
{
tokens.Seek(token.TokenIndex);
tokens.Consume();
IToken potentialDeclaration = tokens.LT(-2);
if (potentialDeclaration.Type != Java2Lexer.IDENTIFIER || definitions.Contains(potentialDeclaration) || references.Contains(potentialDeclaration))
{
continue;
}
bool agree = false;
NetworkInterpreter interpreter = CreateVarDeclarationNetworkInterpreter(tokens, token.Type);
while (interpreter.TryStepBackward())
{
if (interpreter.Contexts.Count == 0 || interpreter.Contexts.Count > 400)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedStart))
{
break;
}
interpreter.Contexts.RemoveAll(i => !IsConsistentWithPreviousResult(i, true, definitions, references));
agree = AllAgree(interpreter.Contexts, potentialDeclaration.TokenIndex);
if (agree)
{
break;
}
}
interpreter.CombineBoundedStartContexts();
if (!agree)
{
while (interpreter.TryStepForward())
{
if (interpreter.Contexts.Count == 0 || interpreter.Contexts.Count > 400)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedEnd))
{
break;
}
interpreter.Contexts.RemoveAll(i => !IsConsistentWithPreviousResult(i, false, definitions, references));
agree = AllAgree(interpreter.Contexts, potentialDeclaration.TokenIndex);
if (agree)
{
break;
}
}
interpreter.CombineBoundedEndContexts();
}
foreach (var context in interpreter.Contexts)
{
foreach (var transition in context.Transitions)
{
if (!transition.Symbol.HasValue)
{
continue;
}
switch (transition.Symbol)
{
case Java2Lexer.IDENTIFIER:
//case Java2Lexer.KW_THIS:
RuleBinding rule = interpreter.Network.StateRules[transition.Transition.TargetState.Id];
if (rule.Name == JavaAtnBuilder.RuleNames.SymbolReferenceIdentifier)
{
references.Add(tokens.Get(transition.TokenIndex.Value));
}
else if (rule.Name == JavaAtnBuilder.RuleNames.SymbolDefinitionIdentifier)
{
definitions.Add(tokens.Get(transition.TokenIndex.Value));
}
break;
default:
continue;
}
}
}
}
// tokens which are in both the 'definitions' and 'references' sets are actually unknown.
HashSet <IToken> unknownIdentifiers = new HashSet <IToken>(definitions, TokenIndexEqualityComparer.Default);
unknownIdentifiers.IntersectWith(references);
definitions.ExceptWith(unknownIdentifiers);
#if true // set to true to mark all unknown identifiers as references (requires complete analysis of definitions)
references = new HashSet <IToken>(identifiers, TokenIndexEqualityComparer.Default);
references.ExceptWith(definitions);
references.ExceptWith(unknownIdentifiers);
#else
references.ExceptWith(unknownIdentifiers);
// the full set of unknown identifiers are any that aren't explicitly classified as a definition or a reference
unknownIdentifiers = new HashSet <IToken>(identifiers, TokenIndexEqualityComparer.Default);
unknownIdentifiers.ExceptWith(definitions);
unknownIdentifiers.ExceptWith(references);
#endif
List <ITagSpan <IClassificationTag> > tags = new List <ITagSpan <IClassificationTag> >();
IClassificationType definitionClassificationType = _classificationTypeRegistryService.GetClassificationType(JavaSymbolTaggerClassificationTypeNames.Definition);
tags.AddRange(ClassifyTokens(snapshot, definitions, new ClassificationTag(definitionClassificationType)));
IClassificationType referenceClassificationType = _classificationTypeRegistryService.GetClassificationType(JavaSymbolTaggerClassificationTypeNames.Reference);
tags.AddRange(ClassifyTokens(snapshot, references, new ClassificationTag(referenceClassificationType)));
IClassificationType unknownClassificationType = _classificationTypeRegistryService.GetClassificationType(JavaSymbolTaggerClassificationTypeNames.UnknownIdentifier);
tags.AddRange(ClassifyTokens(snapshot, unknownIdentifiers, new ClassificationTag(unknownClassificationType)));
_tags = tags;
timer.Stop();
IOutputWindowPane pane = OutputWindowService.TryGetPane(PredefinedOutputWindowPanes.TvlIntellisense);
if (pane != null)
{
pane.WriteLine(string.Format("Finished classifying {0} identifiers in {1}ms: {2} definitions, {3} references, {4} unknown", identifiers.Count, timer.ElapsedMilliseconds, definitions.Count, references.Count, unknownIdentifiers.Count));
}
OnTagsChanged(new SnapshotSpanEventArgs(new SnapshotSpan(snapshot, new Span(0, snapshot.Length))));
}
public void Parse(string plain_old_input_grammar, string ffn)
{
Text = plain_old_input_grammar;
full_file_name = ffn;
// Set up Antlr to parse input grammar.
byte[] byteArray = Encoding.UTF8.GetBytes(plain_old_input_grammar);
CommonTokenStream cts = new CommonTokenStream(
new ANTLRv4Lexer(
new AntlrInputStream(
new StreamReader(
new MemoryStream(byteArray)).ReadToEnd())));
_ant_parser = new ANTLRv4Parser(cts);
// Set up another token stream containing comments. This might be
// problematic as the parser influences the lexer.
CommonTokenStream cts_off_channel = new CommonTokenStream(
new ANTLRv4Lexer(
new AntlrInputStream(
new StreamReader(
new MemoryStream(byteArray)).ReadToEnd())),
ANTLRv4Lexer.OFF_CHANNEL);
// Get all comments.
_ant_comments = new List <IToken>();
while (cts_off_channel.LA(1) != ANTLRv4Parser.Eof)
{
IToken token = cts_off_channel.LT(1);
if (token.Type == ANTLRv4Parser.BLOCK_COMMENT ||
token.Type == ANTLRv4Parser.LINE_COMMENT)
{
_ant_comments.Add(token);
}
cts_off_channel.Consume();
}
try
{
_ant_tree = _ant_parser.grammarSpec();
}
catch (Exception e)
{
// Parsing error.
}
_all_nodes = DFSVisitor.DFS(_ant_tree as ParserRuleContext).ToArray();
{
// Get all nonterminal names from the grammar.
IEnumerable <IParseTree> nonterm_nodes_iterator = _all_nodes.Where((IParseTree n) =>
{
TerminalNodeImpl nonterm = n as TerminalNodeImpl;
return(nonterm?.Symbol.Type == ANTLRv4Parser.RULE_REF);
});
_ant_nonterminals_names = nonterm_nodes_iterator.Select <IParseTree, string>(
(t) => (t as TerminalNodeImpl).Symbol.Text).ToArray();
}
{
// Get all terminal names from the grammar.
IEnumerable <IParseTree> term_nodes_iterator = _all_nodes.Where((IParseTree n) =>
{
TerminalNodeImpl nonterm = n as TerminalNodeImpl;
return(nonterm?.Symbol.Type == ANTLRv4Parser.TOKEN_REF);
});
_ant_terminals_names = term_nodes_iterator.Select <IParseTree, string>(
(t) => (t as TerminalNodeImpl).Symbol.Text).ToArray();
}
{
// Get all defining and applied occurences of nonterminal names in grammar.
IEnumerable <IParseTree> nonterm_nodes_iterator = _all_nodes.Where((IParseTree n) =>
{
TerminalNodeImpl nonterm = n as TerminalNodeImpl;
if (nonterm == null)
{
return(false);
}
if (!_ant_nonterminals_names.Contains(nonterm.GetText()))
{
return(false);
}
// The token must be part of parserRuleSpec context.
for (var p = nonterm.Parent; p != null; p = p.Parent)
{
if (p is ANTLRv4Parser.ParserRuleSpecContext)
{
return(true);
}
}
return(false);
});
_ant_nonterminals = nonterm_nodes_iterator.Select <IParseTree, IToken>(
(t) => (t as TerminalNodeImpl).Symbol).ToArray();
// Get all defining and applied occurences of nonterminal names in grammar.
var iterator = nonterm_nodes_iterator.Where((IParseTree n) =>
{
TerminalNodeImpl term = n as TerminalNodeImpl;
if (term == null)
{
return(false);
}
IRuleNode parent = term.Parent;
for (int i = 0; i < parent.ChildCount; ++i)
{
if (parent.GetChild(i) == term &&
i + 1 < parent.ChildCount &&
parent.GetChild(i + 1).GetText() == ":")
{
return(true);
}
}
return(false);
});
_ant_nonterminals_defining = iterator.Select <IParseTree, IToken>(
(t) => (t as TerminalNodeImpl).Symbol).ToArray();
}
{
// Get all defining and applied occurences of nonterminal names in grammar.
IEnumerable <IParseTree> term_nodes_iterator = _all_nodes.Where((IParseTree n) =>
{
TerminalNodeImpl term = n as TerminalNodeImpl;
if (term == null)
{
return(false);
}
if (!_ant_terminals_names.Contains(term.GetText()))
{
return(false);
}
// The token must be part of parserRuleSpec context.
for (var p = term.Parent; p != null; p = p.Parent)
{
if (p is ANTLRv4Parser.ParserRuleSpecContext ||
p is ANTLRv4Parser.LexerRuleSpecContext)
{
return(true);
}
}
return(false);
});
_ant_terminals = term_nodes_iterator.Select <IParseTree, IToken>(
(t) => (t as TerminalNodeImpl).Symbol).ToArray();
// Get all defining nonterminal names in grammar.
var iterator = term_nodes_iterator.Where((IParseTree n) =>
{
TerminalNodeImpl term = n as TerminalNodeImpl;
if (term == null)
{
return(false);
}
IRuleNode parent = term.Parent;
for (int i = 0; i < parent.ChildCount; ++i)
{
if (parent.GetChild(i) == term &&
i + 1 < parent.ChildCount &&
parent.GetChild(i + 1).GetText() == ":")
{
return(true);
}
}
return(false);
});
_ant_terminals_defining = iterator.Select <IParseTree, IToken>(
(t) => (t as TerminalNodeImpl).Symbol).ToArray();
}
{
// Get all keyword tokens in grammar.
IEnumerable <IParseTree> keywords_interator = _all_nodes.Where((IParseTree n) =>
{
TerminalNodeImpl nonterm = n as TerminalNodeImpl;
if (nonterm == null)
{
return(false);
}
for (var p = nonterm.Parent; p != null; p = p.Parent)
{
// "parser grammar" "lexer grammar" etc.
if (p is ANTLRv4Parser.GrammarTypeContext)
{
return(true);
}
if (p is ANTLRv4Parser.OptionsSpecContext)
{
return(true);
}
// "options ..."
if (p is ANTLRv4Parser.OptionContext)
{
return(false);
}
// "import ..."
if (p is ANTLRv4Parser.DelegateGrammarsContext)
{
return(true);
}
if (p is ANTLRv4Parser.DelegateGrammarContext)
{
return(false);
}
// "tokens ..."
if (p is ANTLRv4Parser.TokensSpecContext)
{
return(true);
}
if (p is ANTLRv4Parser.IdListContext)
{
return(false);
}
// "channels ..."
if (p is ANTLRv4Parser.ChannelsSpecContext)
{
return(true);
}
if (p is ANTLRv4Parser.ModeSpecContext)
{
return(true);
}
}
return(false);
});
_ant_keywords = keywords_interator.Select <IParseTree, IToken>(
(t) => (t as TerminalNodeImpl).Symbol).ToArray();
}
{
// Get all defining and applied occurences of nonterminal names in grammar.
IEnumerable <IParseTree> lit_nodes_iterator = _all_nodes.Where((IParseTree n) =>
{
TerminalNodeImpl term = n as TerminalNodeImpl;
if (term == null)
{
return(false);
}
// Chicken/egg problem. Assume that literals are marked
// with the appropriate token type.
if (term.Symbol == null)
{
return(false);
}
if (!(term.Symbol.Type == ANTLRv4Parser.STRING_LITERAL ||
term.Symbol.Type == ANTLRv4Parser.INT ||
term.Symbol.Type == ANTLRv4Parser.LEXER_CHAR_SET))
{
return(false);
}
// The token must be part of parserRuleSpec context.
for (var p = term.Parent; p != null; p = p.Parent)
{
if (p is ANTLRv4Parser.ParserRuleSpecContext ||
p is ANTLRv4Parser.LexerRuleSpecContext)
{
return(true);
}
}
return(false);
});
_ant_literals = lit_nodes_iterator.Select <IParseTree, IToken>(
(t) => (t as TerminalNodeImpl).Symbol).ToArray();
}
//pp.ErrorHandler = new MyErrorStrategy();
}
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) when (!ErrorHandler.IsCriticalException(ex))
//{
// quickInfoContent.Add(ex.Message);
//}
}
}
}
protected override void ReParseImpl()
{
// lex the entire document to get the set of identifiers we'll need to classify
ITextSnapshot snapshot = TextBuffer.CurrentSnapshot;
var input = new SnapshotCharStream(snapshot, new Span(0, snapshot.Length));
var lexer = new AlloyLexer(input);
var tokens = new CommonTokenStream(lexer);
tokens.Fill();
/* easy to handle the following definitions:
* - module (name)
* - open (external symbol reference) ... as (name)
* - fact (name)?
* - assert (name)?
* - fun (ref.name | name)
* - pred (ref.name | name)
* - (name): run|check
* - sig (namelist)
* - enum (name)
* moderate to handle the following definitions:
* - decl name(s)
* harder to handle the following definitions:
*/
/* A single name follows the following keywords:
* - KW_MODULE
* - KW_OPEN
* - KW_AS
* - KW_ENUM
* - KW_FACT (name is optional)
* - KW_ASSERT (name is optional)
*/
List <IToken> nameKeywords = new List <IToken>();
List <IToken> declColons = new List <IToken>();
List <IToken> identifiers = new List <IToken>();
while (tokens.LA(1) != CharStreamConstants.EndOfFile)
{
switch (tokens.LA(1))
{
case AlloyLexer.IDENTIFIER:
identifiers.Add(tokens.LT(1));
break;
case AlloyLexer.KW_MODULE:
case AlloyLexer.KW_OPEN:
case AlloyLexer.KW_AS:
case AlloyLexer.KW_ENUM:
case AlloyLexer.KW_FACT:
case AlloyLexer.KW_ASSERT:
case AlloyLexer.KW_RUN:
case AlloyLexer.KW_CHECK:
case AlloyLexer.KW_EXTENDS:
case AlloyLexer.KW_FUN:
case AlloyLexer.KW_PRED:
case AlloyLexer.KW_SIG:
nameKeywords.Add(tokens.LT(1));
break;
case AlloyLexer.COLON:
declColons.Add(tokens.LT(1));
break;
case CharStreamConstants.EndOfFile:
goto doneLexing;
default:
break;
}
tokens.Consume();
}
doneLexing:
HashSet <IToken> definitions = new HashSet <IToken>(TokenIndexEqualityComparer.Default);
HashSet <IToken> references = new HashSet <IToken>(TokenIndexEqualityComparer.Default);
foreach (var token in nameKeywords)
{
tokens.Seek(token.TokenIndex);
NetworkInterpreter interpreter = CreateNetworkInterpreter(tokens);
while (interpreter.TryStepForward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedEnd))
{
break;
}
}
interpreter.CombineBoundedEndContexts();
foreach (var context in interpreter.Contexts)
{
foreach (var transition in context.Transitions)
{
if (!transition.Symbol.HasValue)
{
continue;
}
switch (transition.Symbol)
{
case AlloyLexer.IDENTIFIER:
case AlloyLexer.KW_THIS:
RuleBinding rule = interpreter.Network.StateRules[transition.Transition.TargetState.Id];
if (rule.Name != AlloySimplifiedAtnBuilder.RuleNames.NameDefinition)
{
references.Add(tokens.Get(transition.TokenIndex.Value));
}
if (rule.Name != AlloySimplifiedAtnBuilder.RuleNames.NameReference)
{
definitions.Add(tokens.Get(transition.TokenIndex.Value));
}
break;
default:
continue;
}
}
}
}
foreach (var token in declColons)
{
tokens.Seek(token.TokenIndex);
tokens.Consume();
NetworkInterpreter interpreter = CreateNetworkInterpreter(tokens);
while (interpreter.TryStepBackward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedStart))
{
break;
}
}
interpreter.CombineBoundedStartContexts();
while (interpreter.TryStepForward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedEnd))
{
break;
}
}
interpreter.CombineBoundedEndContexts();
foreach (var context in interpreter.Contexts)
{
foreach (var transition in context.Transitions)
{
if (!transition.Symbol.HasValue)
{
continue;
}
switch (transition.Symbol)
{
case AlloyLexer.IDENTIFIER:
case AlloyLexer.KW_THIS:
RuleBinding rule = interpreter.Network.StateRules[transition.Transition.TargetState.Id];
if (rule.Name != AlloySimplifiedAtnBuilder.RuleNames.NameDefinition)
{
references.Add(tokens.Get(transition.TokenIndex.Value));
}
if (rule.Name != AlloySimplifiedAtnBuilder.RuleNames.NameReference)
{
definitions.Add(tokens.Get(transition.TokenIndex.Value));
}
break;
default:
continue;
}
}
}
}
foreach (var token in identifiers)
{
if (definitions.Contains(token) || references.Contains(token))
{
continue;
}
tokens.Seek(token.TokenIndex);
tokens.Consume();
NetworkInterpreter interpreter = CreateNetworkInterpreter(tokens);
while (interpreter.TryStepBackward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedStart))
{
break;
}
}
interpreter.CombineBoundedStartContexts();
while (interpreter.TryStepForward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedEnd))
{
break;
}
}
interpreter.CombineBoundedEndContexts();
foreach (var context in interpreter.Contexts)
{
foreach (var transition in context.Transitions)
{
if (!transition.Symbol.HasValue)
{
continue;
}
switch (transition.Symbol)
{
case AlloyLexer.IDENTIFIER:
case AlloyLexer.KW_THIS:
RuleBinding rule = interpreter.Network.StateRules[transition.Transition.TargetState.Id];
if (rule.Name != AlloySimplifiedAtnBuilder.RuleNames.NameDefinition)
{
references.Add(tokens.Get(transition.TokenIndex.Value));
}
if (rule.Name != AlloySimplifiedAtnBuilder.RuleNames.NameReference)
{
definitions.Add(tokens.Get(transition.TokenIndex.Value));
}
break;
default:
continue;
}
}
}
}
// tokens which are in both the 'definitions' and 'references' sets are actually unknown.
HashSet <IToken> unknownIdentifiers = new HashSet <IToken>(definitions, TokenIndexEqualityComparer.Default);
unknownIdentifiers.IntersectWith(references);
definitions.ExceptWith(unknownIdentifiers);
references.ExceptWith(unknownIdentifiers);
// the full set of unknown identifiers are any that aren't explicitly classified as a definition or a reference
unknownIdentifiers = new HashSet <IToken>(identifiers, TokenIndexEqualityComparer.Default);
unknownIdentifiers.ExceptWith(definitions);
unknownIdentifiers.ExceptWith(references);
List <ITagSpan <IClassificationTag> > tags = new List <ITagSpan <IClassificationTag> >();
IClassificationType definitionClassificationType = _classificationTypeRegistryService.GetClassificationType(AlloySymbolTaggerClassificationTypeNames.Definition);
tags.AddRange(ClassifyTokens(snapshot, definitions, new ClassificationTag(definitionClassificationType)));
IClassificationType referenceClassificationType = _classificationTypeRegistryService.GetClassificationType(AlloySymbolTaggerClassificationTypeNames.Reference);
tags.AddRange(ClassifyTokens(snapshot, references, new ClassificationTag(referenceClassificationType)));
IClassificationType unknownClassificationType = _classificationTypeRegistryService.GetClassificationType(AlloySymbolTaggerClassificationTypeNames.UnknownIdentifier);
tags.AddRange(ClassifyTokens(snapshot, unknownIdentifiers, new ClassificationTag(unknownClassificationType)));
_tags = tags;
OnTagsChanged(new SnapshotSpanEventArgs(new SnapshotSpan(snapshot, new Span(0, snapshot.Length))));
}
protected void InsertImaginaryIndentDedentTokens()
{
IToken t = stream.LT(1);
stream.Consume();
IList hiddenTokens;
// if not a NEWLINE, doesn't signal indent/dedent work; just enqueue
if (t.Type != PythonLexer.NEWLINE)
{
hiddenTokens = stream.GetTokens(lastTokenAddedIndex + 1, t.TokenIndex - 1);
if (hiddenTokens != null)
{
tokens.AddRange(hiddenTokens);
}
lastTokenAddedIndex = t.TokenIndex;
tokens.Add(t);
return;
}
// we know it's a newline
BitSet hidden = BitSet.Of(PythonLexer.COMMENT,
PythonLexer.LEADING_WS,
PythonLexer.CONTINUED_LINE,
PythonLexer.NEWLINE);
hidden.Add(PythonLexer.WS);
// save NEWLINE in the queue
//System.out.println("found newline: "+t+" stack is "+StackString());
hiddenTokens = stream.GetTokens(lastTokenAddedIndex + 1, t.TokenIndex - 1, hidden);
if (hiddenTokens != null)
{
tokens.AddRange(hiddenTokens);
}
lastTokenAddedIndex = t.TokenIndex;
tokens.Add(t);
// grab first token of next line
t = stream.LT(1);
stream.Consume();
hiddenTokens = stream.GetTokens(lastTokenAddedIndex + 1, t.TokenIndex - 1, hidden);
if (hiddenTokens != null)
{
tokens.AddRange(hiddenTokens);
}
lastTokenAddedIndex = t.TokenIndex;
// compute cpos as the char pos of next non-WS token in line
int cpos = t.CharPositionInLine; // column dictates indent/dedent
if (t.Type == TokenTypes.EndOfFile)
{
cpos = -1; // pretend EOF always happens at left edge
}
else if (t.Type == PythonLexer.LEADING_WS)
{
cpos = t.Text.Length;
}
//System.out.println("next token is: "+t);
// compare to last indent level
int lastIndent = Peek();
//System.out.println("cpos, lastIndent = "+cpos+", "+lastIndent);
if (cpos > lastIndent)
{ // they indented; track and gen INDENT
Push(cpos);
//System.out.println("Push("+cpos+"): "+StackString());
IToken indent = new ClassicToken(PythonParser.INDENT, "");
indent.CharPositionInLine = t.CharPositionInLine;
indent.Line = t.Line;
tokens.Add(indent);
}
else if (cpos < lastIndent)
{ // they dedented
// how far back did we dedent?
int prevIndex = FindPreviousIndent(cpos);
//System.out.println("dedented; prevIndex of cpos="+cpos+" is "+prevIndex);
// generate DEDENTs for each indent level we backed up over
for (int d = sp - 1; d >= prevIndex; d--)
{
IToken dedent = new ClassicToken(PythonParser.DEDENT, "");
dedent.CharPositionInLine = t.CharPositionInLine;
dedent.Line = t.Line;
tokens.Add(dedent);
}
sp = prevIndex; // pop those off indent level
}
if (t.Type != PythonLexer.LEADING_WS)
{ // discard WS
tokens.Add(t);
}
}
protected override void ReParseImpl()
{
Stopwatch timer = Stopwatch.StartNew();
// lex the entire document to get the set of identifiers we'll need to classify
ITextSnapshot snapshot = TextBuffer.CurrentSnapshot;
var input = new SnapshotCharStream(snapshot, new Span(0, snapshot.Length));
var lexer = new GoLexer(input);
var tokenSource = new GoSemicolonInsertionTokenSource(lexer);
var tokens = new CommonTokenStream(tokenSource);
tokens.Fill();
/* easy to handle the following definitions:
* - module (name)
* - open (external symbol reference) ... as (name)
* - fact (name)?
* - assert (name)?
* - fun (ref.name | name)
* - pred (ref.name | name)
* - (name): run|check
* - sig (namelist)
* - enum (name)
* moderate to handle the following definitions:
* - decl name(s)
* harder to handle the following definitions:
*/
/* A single name follows the following keywords:
* - KW_MODULE
* - KW_OPEN
* - KW_AS
* - KW_ENUM
* - KW_FACT (name is optional)
* - KW_ASSERT (name is optional)
*/
List <IToken> nameKeywords = new List <IToken>();
List <IToken> declColons = new List <IToken>();
List <IToken> identifiers = new List <IToken>();
while (tokens.LA(1) != CharStreamConstants.EndOfFile)
{
switch (tokens.LA(1))
{
case GoLexer.IDENTIFIER:
identifiers.Add(tokens.LT(1));
break;
case GoLexer.KW_PACKAGE:
case GoLexer.KW_IMPORT:
case GoLexer.KW_TYPE:
case GoLexer.KW_VAR:
case GoLexer.KW_FUNC:
case GoLexer.KW_CONST:
//case GoLexer.KW_MODULE:
//case GoLexer.KW_OPEN:
//case GoLexer.KW_AS:
//case GoLexer.KW_ENUM:
//case GoLexer.KW_FACT:
//case GoLexer.KW_ASSERT:
//case GoLexer.KW_RUN:
//case GoLexer.KW_CHECK:
//case GoLexer.KW_EXTENDS:
//case GoLexer.KW_FUN:
//case GoLexer.KW_PRED:
//case GoLexer.KW_SIG:
nameKeywords.Add(tokens.LT(1));
break;
case GoLexer.DEFEQ:
case GoLexer.COLON:
declColons.Add(tokens.LT(1));
break;
case CharStreamConstants.EndOfFile:
goto doneLexing;
default:
break;
}
tokens.Consume();
}
doneLexing:
HashSet <IToken> definitions = new HashSet <IToken>(TokenIndexEqualityComparer.Default);
HashSet <IToken> references = new HashSet <IToken>(TokenIndexEqualityComparer.Default);
foreach (var token in nameKeywords)
{
tokens.Seek(token.TokenIndex);
NetworkInterpreter interpreter = CreateTopLevelNetworkInterpreter(tokens);
while (interpreter.TryStepForward())
{
if (interpreter.Contexts.Count == 0 || interpreter.Contexts.Count > 400)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedEnd))
{
break;
}
}
interpreter.CombineBoundedEndContexts();
foreach (var context in interpreter.Contexts)
{
foreach (var transition in context.Transitions)
{
if (!transition.Symbol.HasValue)
{
continue;
}
switch (transition.Symbol)
{
case GoLexer.IDENTIFIER:
//case GoLexer.KW_THIS:
RuleBinding rule = interpreter.Network.StateRules[transition.Transition.TargetState.Id];
if (rule.Name == GoSimplifiedAtnBuilder.RuleNames.SymbolReferenceIdentifier)
{
references.Add(tokens.Get(transition.TokenIndex.Value));
}
else if (rule.Name == GoSimplifiedAtnBuilder.RuleNames.SymbolDefinitionIdentifier)
{
definitions.Add(tokens.Get(transition.TokenIndex.Value));
}
break;
default:
continue;
}
}
}
}
foreach (var token in declColons)
{
tokens.Seek(token.TokenIndex);
tokens.Consume();
if (token.Type == GoLexer.COLON)
{
IToken potentialLabel = tokens.LT(-2);
if (potentialLabel.Type != GoLexer.IDENTIFIER)
{
continue;
}
}
NetworkInterpreter interpreter = CreateVarDeclarationNetworkInterpreter(tokens);
while (interpreter.TryStepBackward())
{
if (interpreter.Contexts.Count == 0 || interpreter.Contexts.Count > 400)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedStart))
{
break;
}
interpreter.Contexts.RemoveAll(i => !IsConsistentWithPreviousResult(i, true, definitions, references));
}
interpreter.CombineBoundedStartContexts();
if (!AllAgree(interpreter.Contexts))
{
while (interpreter.TryStepForward())
{
if (interpreter.Contexts.Count == 0 || interpreter.Contexts.Count > 400)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedEnd))
{
break;
}
interpreter.Contexts.RemoveAll(i => !IsConsistentWithPreviousResult(i, false, definitions, references));
}
interpreter.CombineBoundedEndContexts();
}
foreach (var context in interpreter.Contexts)
{
foreach (var transition in context.Transitions)
{
if (!transition.Symbol.HasValue)
{
continue;
}
switch (transition.Symbol)
{
case GoLexer.IDENTIFIER:
//case GoLexer.KW_THIS:
RuleBinding rule = interpreter.Network.StateRules[transition.Transition.TargetState.Id];
if (rule.Name == GoSimplifiedAtnBuilder.RuleNames.SymbolReferenceIdentifier)
{
references.Add(tokens.Get(transition.TokenIndex.Value));
}
else if (rule.Name == GoSimplifiedAtnBuilder.RuleNames.SymbolDefinitionIdentifier)
{
definitions.Add(tokens.Get(transition.TokenIndex.Value));
}
break;
default:
continue;
}
}
}
}
#if false
foreach (var token in identifiers)
{
if (definitions.Contains(token) || references.Contains(token))
{
continue;
}
tokens.Seek(token.TokenIndex);
tokens.Consume();
NetworkInterpreter interpreter = CreateFullNetworkInterpreter(tokens);
while (interpreter.TryStepBackward())
{
if (interpreter.Contexts.Count == 0 || interpreter.Contexts.Count > 400)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedStart))
{
break;
}
interpreter.Contexts.RemoveAll(i => !IsConsistentWithPreviousResult(i, true, definitions, references));
if (AllAgree(interpreter.Contexts))
{
break;
}
}
interpreter.CombineBoundedStartContexts();
while (interpreter.TryStepForward())
{
if (interpreter.Contexts.Count == 0 || interpreter.Contexts.Count > 400)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedEnd))
{
break;
}
interpreter.Contexts.RemoveAll(i => !IsConsistentWithPreviousResult(i, false, definitions, references));
if (AllAgree(interpreter.Contexts))
{
break;
}
}
interpreter.CombineBoundedEndContexts();
foreach (var context in interpreter.Contexts)
{
foreach (var transition in context.Transitions)
{
if (!transition.Symbol.HasValue)
{
continue;
}
switch (transition.Symbol)
{
case GoLexer.IDENTIFIER:
//case GoLexer.KW_THIS:
RuleBinding rule = interpreter.Network.StateRules[transition.Transition.TargetState.Id];
if (rule.Name == GoSimplifiedAtnBuilder.RuleNames.SymbolReferenceIdentifier)
{
references.Add(tokens.Get(transition.TokenIndex.Value));
}
else if (rule.Name == GoSimplifiedAtnBuilder.RuleNames.SymbolDefinitionIdentifier)
{
definitions.Add(tokens.Get(transition.TokenIndex.Value));
}
break;
default:
continue;
}
}
}
}
#endif
// tokens which are in both the 'definitions' and 'references' sets are actually unknown.
HashSet <IToken> unknownIdentifiers = new HashSet <IToken>(definitions, TokenIndexEqualityComparer.Default);
unknownIdentifiers.IntersectWith(references);
definitions.ExceptWith(unknownIdentifiers);
#if true
references = new HashSet <IToken>(identifiers, TokenIndexEqualityComparer.Default);
references.ExceptWith(definitions);
references.ExceptWith(unknownIdentifiers);
#else
references.ExceptWith(unknownIdentifiers);
// the full set of unknown identifiers are any that aren't explicitly classified as a definition or a reference
unknownIdentifiers = new HashSet <IToken>(identifiers, TokenIndexEqualityComparer.Default);
unknownIdentifiers.ExceptWith(definitions);
unknownIdentifiers.ExceptWith(references);
#endif
List <ITagSpan <IClassificationTag> > tags = new List <ITagSpan <IClassificationTag> >();
IClassificationType definitionClassificationType = _classificationTypeRegistryService.GetClassificationType(GoSymbolTaggerClassificationTypeNames.Definition);
tags.AddRange(ClassifyTokens(snapshot, definitions, new ClassificationTag(definitionClassificationType)));
IClassificationType referenceClassificationType = _classificationTypeRegistryService.GetClassificationType(GoSymbolTaggerClassificationTypeNames.Reference);
tags.AddRange(ClassifyTokens(snapshot, references, new ClassificationTag(referenceClassificationType)));
IClassificationType unknownClassificationType = _classificationTypeRegistryService.GetClassificationType(GoSymbolTaggerClassificationTypeNames.UnknownIdentifier);
tags.AddRange(ClassifyTokens(snapshot, unknownIdentifiers, new ClassificationTag(unknownClassificationType)));
_tags = tags;
timer.Stop();
IOutputWindowPane pane = OutputWindowService.TryGetPane(PredefinedOutputWindowPanes.TvlIntellisense);
if (pane != null)
{
pane.WriteLine(string.Format("Finished classifying {0} identifiers in {1}ms: {2} definitions, {3} references, {4} unknown", identifiers.Count, timer.ElapsedMilliseconds, definitions.Count, references.Count, unknownIdentifiers.Count));
}
OnTagsChanged(new SnapshotSpanEventArgs(new SnapshotSpan(snapshot, new Span(0, snapshot.Length))));
}
protected override void ReParseImpl()
{
// lex the entire document to get the set of identifiers we'll need to process
ITextSnapshot snapshot = TextBuffer.CurrentSnapshot;
var input = new SnapshotCharStream(snapshot, new Span(0, snapshot.Length));
var lexer = new AlloyLexer(input);
var tokens = new CommonTokenStream(lexer);
tokens.Fill();
/* Want to collect information from the following:
* - module (name)
* Want to provide navigation info for the following types:
* - sig
* - enum
* Want to provide navigation info for the following members:
* - decl (within a sigBody)
* - fun
* - pred
* - nameList (within an enumBody)
* Eventually should consider the following:
* - cmdDecl
* - fact
* - assert
*/
List <IToken> navigationKeywords = new List <IToken>();
while (tokens.LA(1) != CharStreamConstants.EndOfFile)
{
switch (tokens.LA(1))
{
case AlloyLexer.KW_MODULE:
case AlloyLexer.KW_SIG:
case AlloyLexer.KW_ENUM:
case AlloyLexer.KW_FUN:
case AlloyLexer.KW_PRED:
//case AlloyLexer.KW_ASSERT:
//case AlloyLexer.KW_FACT:
navigationKeywords.Add(tokens.LT(1));
break;
case CharStreamConstants.EndOfFile:
goto doneLexing;
default:
break;
}
tokens.Consume();
}
doneLexing:
List <IEditorNavigationTarget> navigationTargets = new List <IEditorNavigationTarget>();
AstParserRuleReturnScope <CommonTree, IToken> moduleTree = null;
CommonTreeAdaptor treeAdaptor = new CommonTreeAdaptor();
foreach (var token in navigationKeywords)
{
tokens.Seek(token.TokenIndex);
tokens.Consume();
NetworkInterpreter interpreter = CreateNetworkInterpreter(tokens);
while (interpreter.TryStepBackward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedStart))
{
break;
}
}
interpreter.CombineBoundedStartContexts();
#if false // since we're using the AlloyParser, I don't think we need this.
while (interpreter.TryStepForward())
{
if (interpreter.Contexts.Count == 0)
{
break;
}
if (interpreter.Contexts.All(context => context.BoundedEnd))
{
break;
}
}
#endif
foreach (var context in interpreter.Contexts)
{
switch (token.Type)
{
case AlloyLexer.KW_MODULE:
{
InterpretTraceTransition firstMatch = context.Transitions.FirstOrDefault(i => i.TokenIndex != null);
if (firstMatch == null)
{
continue;
}
tokens.Seek(firstMatch.TokenIndex.Value);
AlloyParser parser = new AlloyParser(tokens);
AstParserRuleReturnScope <CommonTree, IToken> result = parser.module();
if (result == null || parser.NumberOfSyntaxErrors > 0)
{
continue;
}
moduleTree = result;
break;
}
case AlloyLexer.KW_SIG:
case AlloyLexer.KW_ENUM:
case AlloyLexer.KW_FUN:
case AlloyLexer.KW_PRED:
{
InterpretTraceTransition firstMatch = context.Transitions.FirstOrDefault(i => i.TokenIndex != null);
if (firstMatch == null)
{
continue;
}
tokens.Seek(firstMatch.TokenIndex.Value);
AlloyParser parser = new AlloyParser(tokens);
AstParserRuleReturnScope <CommonTree, IToken> result = null;
switch (token.Type)
{
case AlloyLexer.KW_SIG:
result = parser.sigDeclNoBlock();
break;
case AlloyLexer.KW_ENUM:
result = parser.enumDecl();
break;
case AlloyLexer.KW_FUN:
case AlloyLexer.KW_PRED:
result = parser.funDeclGenericBody();
break;
}
if (result == null || parser.NumberOfSyntaxErrors > 0)
{
continue;
}
if (moduleTree != null)
{
object tree = treeAdaptor.Nil();
treeAdaptor.AddChild(tree, moduleTree.Tree);
treeAdaptor.AddChild(tree, result.Tree);
treeAdaptor.SetTokenBoundaries(tree, moduleTree.Start, result.Stop);
result.Start = moduleTree.Start;
result.Tree = (CommonTree)tree;
}
navigationTargets.AddRange(AlloyEditorNavigationSourceWalker.ExtractNavigationTargets(result, tokens.GetTokens().AsReadOnly(), _provider, snapshot));
break;
}
default:
continue;
}
break;
#if false
InterpretTraceTransition firstBraceTransition = context.Transitions.FirstOrDefault(i => i.Symbol == AlloyLexer.LBRACE);
InterpretTraceTransition lastBraceTransition = context.Transitions.LastOrDefault(i => i.Transition.IsMatch);
if (firstBraceTransition == null || lastBraceTransition == null)
{
continue;
}
if (token.Type == AlloyLexer.KW_SIG)
{
InterpretTraceTransition lastBodyBraceTransition = context.Transitions.LastOrDefault(i => i.Symbol == AlloyLexer.RBRACE && interpreter.Network.StateRules[i.Transition.SourceState.Id].Name == AlloyOutliningAtnBuilder.RuleNames.SigBody);
if (lastBodyBraceTransition != lastBraceTransition)
{
var bodySpan = OutlineBlock(firstBraceTransition.Token, lastBodyBraceTransition.Token, snapshot);
if (bodySpan != null)
{
navigationTargets.Add(bodySpan);
}
firstBraceTransition = context.Transitions.LastOrDefault(i => i.Symbol == AlloyLexer.LBRACE && i.TokenIndex > lastBodyBraceTransition.TokenIndex);
}
}
var blockSpan = OutlineBlock(firstBraceTransition.Token, lastBraceTransition.Token, snapshot);
if (blockSpan != null)
{
navigationTargets.Add(blockSpan);
}
#endif
}
}
_navigationTargets = navigationTargets;
OnNavigationTargetsChanged(new SnapshotSpanEventArgs(new SnapshotSpan(snapshot, new Span(0, snapshot.Length))));
}
