public void RemoveDuplicates()
{
var set = PooledHashSet <T> .GetInstance();
int j = 0;
for (int i = 0; i < Count; i++)
{
if (set.Add(this[i]))
{
this[j] = this[i];
j++;
}
}
Clip(j);
set.Free();
}
public static Analysis Analyze(
BoundNode node,
MethodSymbol method,
int topLevelMethodOrdinal,
MethodSymbol substitutedSourceMethod,
VariableSlotAllocator slotAllocatorOpt,
TypeCompilationState compilationState,
ArrayBuilder <ClosureDebugInfo> closureDebugInfo,
DiagnosticBag diagnostics
)
{
var methodsConvertedToDelegates = PooledHashSet <MethodSymbol> .GetInstance();
var scopeTree = ScopeTreeBuilder.Build(
node,
method,
methodsConvertedToDelegates,
diagnostics
);
Debug.Assert(scopeTree != null);
var analysis = new Analysis(
scopeTree,
methodsConvertedToDelegates,
method,
topLevelMethodOrdinal,
slotAllocatorOpt,
compilationState
);
analysis.MakeAndAssignEnvironments();
analysis.ComputeLambdaScopesAndFrameCaptures();
if (
compilationState.Compilation.Options.OptimizationLevel
== OptimizationLevel.Release
)
{
// This can affect when a variable is in scope whilst debugging, so only do this in release mode.
analysis.MergeEnvironments();
}
analysis.InlineThisOnlyEnvironments();
return(analysis);
}
/// <summary>
/// Return the constant value dependencies. Compute the dependencies
/// if necessary by evaluating the constant value but only persist the
/// constant value if there were no dependencies. (If there are dependencies,
/// the constant value will be re-evaluated after evaluating dependencies.)
/// </summary>
internal ImmutableHashSet <SourceFieldSymbolWithSyntaxReference> GetConstantValueDependencies(bool earlyDecodingWellKnownAttributes)
{
var value = this.GetLazyConstantValue(earlyDecodingWellKnownAttributes);
if (value != Microsoft.CodeAnalysis.ConstantValue.Unset)
{
// Constant value already determined. No need to
// compute dependencies since the constant values
// of all dependencies should be evaluated as well.
return(ImmutableHashSet <SourceFieldSymbolWithSyntaxReference> .Empty);
}
ImmutableHashSet <SourceFieldSymbolWithSyntaxReference> dependencies;
var builder = PooledHashSet <SourceFieldSymbolWithSyntaxReference> .GetInstance();
var diagnostics = DiagnosticBag.GetInstance();
value = MakeConstantValue(builder, earlyDecodingWellKnownAttributes, diagnostics);
// Only persist if there are no dependencies and the calculation
// completed successfully. (We could probably persist in other
// scenarios but it's probably not worth the added complexity.)
if ((builder.Count == 0) &&
(value != null) &&
!value.IsBad &&
(value != Microsoft.CodeAnalysis.ConstantValue.Unset) &&
diagnostics.IsEmptyWithoutResolution)
{
this.SetLazyConstantValue(
value,
earlyDecodingWellKnownAttributes,
diagnostics,
startsCycle: false);
dependencies = ImmutableHashSet <SourceFieldSymbolWithSyntaxReference> .Empty;
}
else
{
dependencies = ImmutableHashSet <SourceFieldSymbolWithSyntaxReference> .Empty.Union(builder);
}
diagnostics.Free();
builder.Free();
return(dependencies);
}
protected override TAnalysisData GetMergedAnalysisDataForPossibleThrowingOperation(TAnalysisData?existingData, IOperation operation)
{
// Get tracked entities.
using var entitiesBuilder = PooledHashSet <AnalysisEntity> .GetInstance();
AddTrackedEntities(entitiesBuilder);
// Only non-child entities are tracked for now.
var resultAnalysisData = GetTrimmedCurrentAnalysisData(entitiesBuilder.Where(e => !e.IsChildOrInstanceMember && HasAbstractValue(e)));
if (existingData != null)
{
var mergedAnalysisData = MergeAnalysisData(resultAnalysisData, existingData);
resultAnalysisData.Dispose();
resultAnalysisData = mergedAnalysisData;
}
return(resultAnalysisData);
}
public void MergeThrowLocations(BoundBlockWithExceptions block)
{
foreach (var item in block.ThrowLocations)
{
var throwType = item.Key;
PooledHashSet <SyntaxNode> nodes;
if (!ThrowLocations.TryGetValue(throwType, out nodes))
{
nodes = PooledHashSet <SyntaxNode> .GetInstance();
ThrowLocations.Add(throwType, nodes);
}
foreach (var syntax in item.Value)
{
nodes.Add(syntax);
}
}
}
private void ReportInitializedNotUsedNotInitializedUsedLocalVars(
CodeBlockAnalysisContext context)
{
PooledHashSet <IdentifierNameSyntax> instance1 = PooledHashSet <IdentifierNameSyntax> .GetInstance();
PooledHashSet <IdentifierNameSyntax> instance2 = PooledHashSet <IdentifierNameSyntax> .GetInstance();
try
{
this.CollectInitializedNotUsedNotInitializedUsedLocalVars((HashSet <IdentifierNameSyntax>)instance1, (HashSet <IdentifierNameSyntax>)instance2);
VariableInitializationUsageAnalyzer.ReportInitializedNotUsedVariables(new Action <Diagnostic>(context.ReportDiagnostic), instance1);
VariableInitializationUsageAnalyzer.ReportNotInitializedVariables(new Action <Diagnostic>(context.ReportDiagnostic), instance2);
}
finally
{
instance1.Free();
instance2.Free();
}
}
protected sealed override void StopTrackingDataForParameters(ImmutableDictionary <IParameterSymbol, AnalysisEntity> parameterEntities)
{
if (!parameterEntities.IsEmpty)
{
using var allEntities = PooledHashSet <AnalysisEntity> .GetInstance();
AddTrackedEntities(allEntities);
foreach (var(parameter, parameterEntity) in parameterEntities)
{
StopTrackingDataForEntity(parameterEntity, CurrentAnalysisData, allEntities);
if (parameter.IsParams)
{
StopTrackingDataForParamArrayParameterIndices(parameterEntity, CurrentAnalysisData, allEntities);
}
}
}
}
protected override CopyAnalysisData GetTrimmedCurrentAnalysisData(IEnumerable <AnalysisEntity> withEntities)
{
using var processedEntities = PooledHashSet <AnalysisEntity> .GetInstance();
var analysisData = new CopyAnalysisData();
foreach (var entity in withEntities)
{
if (processedEntities.Add(entity))
{
var copyValue = GetAbstractValue(entity);
analysisData.SetAbstactValueForEntities(copyValue, entityBeingAssigned: null);
processedEntities.AddRange(copyValue.AnalysisEntities);
}
}
AssertValidCopyAnalysisData(analysisData);
return(analysisData);
}
private static PooledDictionary<TNode, int> PredecessorCounts<TNode>(
IEnumerable<TNode> nodes,
Func<TNode, ImmutableArray<TNode>> successors,
out ImmutableArray<TNode> allNodes)
{
var predecessorCounts = PooledDictionary<TNode, int>.GetInstance();
var counted = PooledHashSet<TNode>.GetInstance();
var toCount = ArrayBuilder<TNode>.GetInstance();
var allNodesBuilder = ArrayBuilder<TNode>.GetInstance();
toCount.AddRange(nodes);
while (toCount.Count != 0)
{
var n = toCount.Pop();
if (!counted.Add(n))
{
continue;
}
allNodesBuilder.Add(n);
if (!predecessorCounts.ContainsKey(n))
{
predecessorCounts.Add(n, 0);
}
foreach (var succ in successors(n))
{
toCount.Push(succ);
if (predecessorCounts.TryGetValue(succ, out int succPredecessorCount))
{
predecessorCounts[succ] = succPredecessorCount + 1;
}
else
{
predecessorCounts.Add(succ, 1);
}
}
}
counted.Free();
toCount.Free();
allNodes = allNodesBuilder.ToImmutableAndFree();
return predecessorCounts;
}
public void UpdateAddressSharedEntitiesForParameter(IParameterSymbol parameter, AnalysisEntity analysisEntity, ArgumentInfo<TAbstractAnalysisValue> assignedValueOpt)
{
if (parameter.RefKind != RefKind.None &&
assignedValueOpt?.AnalysisEntityOpt != null)
{
var addressSharedEntities = ComputeAddressSharedEntities();
var isReferenceCopy = !addressSharedEntities.Any(a => a.Type.IsValueType);
var copyValue = new CopyAbstractValue(addressSharedEntities, isReferenceCopy);
foreach (var entity in copyValue.AnalysisEntities)
{
_addressSharedEntitiesBuilder[entity] = copyValue;
}
}
ImmutableHashSet<AnalysisEntity> ComputeAddressSharedEntities()
{
var builder = PooledHashSet<AnalysisEntity>.GetInstance();
AddIfHasKnownInstanceLocation(analysisEntity, builder);
AddIfHasKnownInstanceLocation(assignedValueOpt.AnalysisEntityOpt, builder);
// We need to handle multiple ref/out parameters passed the same location.
// For example, "M(ref a, ref a);"
if (_addressSharedEntitiesBuilder.TryGetValue(assignedValueOpt.AnalysisEntityOpt, out var existingValue))
{
foreach (var entity in existingValue.AnalysisEntities)
{
AddIfHasKnownInstanceLocation(entity, builder);
}
}
// Also handle case where the passed in argument is also a ref/out parameter and has address shared entities.
if (_addressSharedEntitiesBuilder.TryGetValue(analysisEntity, out existingValue))
{
foreach (var entity in existingValue.AnalysisEntities)
{
AddIfHasKnownInstanceLocation(entity, builder);
}
}
Debug.Assert(builder.All(e => !e.HasUnknownInstanceLocation));
return builder.ToImmutableAndFree();
}
static SqlSinks()
{
var sinkInfosBuilder = PooledHashSet <SinkInfo> .GetInstance();
sinkInfosBuilder.AddSinkInfo(
WellKnownTypeNames.SystemDataIDbCommand,
SinkKind.Sql,
isInterface: true,
isAnyStringParameterInConstructorASink: true,
sinkProperties: new string[] {
"CommandText",
},
sinkMethodParameters: null);
sinkInfosBuilder.AddSinkInfo(
WellKnownTypeNames.SystemDataIDataAdapter,
SinkKind.Sql,
isInterface: true,
isAnyStringParameterInConstructorASink: true,
sinkProperties: null,
sinkMethodParameters: null);
sinkInfosBuilder.AddSinkInfo(
WellKnownTypeNames.SystemWebUIWebControlsSqlDataSource,
SinkKind.Sql,
isInterface: false,
isAnyStringParameterInConstructorASink: false,
sinkProperties: new string[] {
"ConnectionString",
"DeleteCommand",
"InsertCommand",
"SelectCommand",
"UpdateCommand",
},
sinkMethodParameters: null);
sinkInfosBuilder.AddSinkInfo(
WellKnownTypeNames.MicrosoftEntityFrameworkCoreRelationalQueryableExtensions,
SinkKind.Sql,
isInterface: false,
isAnyStringParameterInConstructorASink: false,
sinkProperties: null,
sinkMethodParameters: new[] {
public override (CopyAbstractValue Value, PredicateValueKind PredicateValueKind)? GetReturnValueAndPredicateKind()
{
// Filter out all the local symbol and flow capture entities from the return value for interprocedural analysis.
var returnValueAndPredicateKind = base.GetReturnValueAndPredicateKind();
if (returnValueAndPredicateKind.HasValue &&
returnValueAndPredicateKind.Value.Value.Kind.IsKnown() &&
DataFlowAnalysisContext.InterproceduralAnalysisData != null)
{
using var entitiesToFilterBuilder = PooledHashSet <AnalysisEntity> .GetInstance();
var copyValue = returnValueAndPredicateKind.Value.Value;
var copyValueEntities = copyValue.AnalysisEntities;
foreach (var entity in copyValueEntities)
{
if (ShouldStopTrackingEntityAtExit(entity))
{
// Stop tracking entity that is now out of scope.
entitiesToFilterBuilder.Add(entity);
// Additionally, stop tracking all the child entities if the entity type has value copy semantics.
if (entity.Type.HasValueCopySemantics())
{
var childEntities = copyValueEntities.Where(e => IsChildAnalysisEntity(e, ancestorEntity: entity));
entitiesToFilterBuilder.AddRange(childEntities);
}
}
}
if (entitiesToFilterBuilder.Count > 0)
{
copyValue = entitiesToFilterBuilder.Count == copyValueEntities.Count ?
CopyAbstractValue.Unknown :
copyValue.WithEntitiesRemoved(entitiesToFilterBuilder);
}
return(copyValue, returnValueAndPredicateKind.Value.PredicateValueKind);
}
return(returnValueAndPredicateKind);
}
/// <summary>
/// IsManagedType is simple for most named types:
/// enums are not managed;
/// non-enum, non-struct named types are managed;
/// generic types and their nested types are managed;
/// type parameters are managed;
/// all special types have spec'd values (basically, (non-string) primitives) are not managed;
///
/// Only structs are complicated, because the definition is recursive. A struct type is managed
/// if one of its instance fields is managed. Unfortunately, this can result in infinite recursion.
/// If the closure is finite, and we don't find anything definitely managed, then we return true.
/// If the closure is infinite, we disregard all but a representative of any expanding cycle.
///
/// Intuitively, this will only return true if there's a specific type we can point to that is would
/// be managed even if it had no fields. e.g. struct S { S s; } is not managed, but struct S { S s; object o; }
/// is because we can point to object.
/// </summary>
internal static bool IsManagedType(NamedTypeSymbol type)
{
// If this is a type with an obvious answer, return quickly.
switch (IsManagedTypeHelper(type))
{
case ThreeState.True:
return(true);
case ThreeState.False:
return(false);
}
// Otherwise, we have to build and inspect the closure of depended-upon types.
var hs = PooledHashSet <Symbol> .GetInstance();
bool result = DependsOnDefinitelyManagedType(type, hs);
hs.Free();
return(result);
}
private GlobalFlowStateAnalysisValueSet WithRootParent(GlobalFlowStateAnalysisValueSet newRoot)
{
Debug.Assert(Kind == GlobalFlowStateAnalysisValueSetKind.Known);
var newHeight = Height + newRoot.Height + 1;
if (Parents.IsEmpty)
{
return(new GlobalFlowStateAnalysisValueSet(AnalysisValues, ImmutableHashSet.Create(newRoot), newHeight, GlobalFlowStateAnalysisValueSetKind.Known));
}
using var parentsBuilder = PooledHashSet <GlobalFlowStateAnalysisValueSet> .GetInstance();
foreach (var parent in Parents)
{
parentsBuilder.Add(parent.WithRootParent(newRoot));
}
return(new GlobalFlowStateAnalysisValueSet(AnalysisValues, parentsBuilder.ToImmutable(), newHeight, GlobalFlowStateAnalysisValueSetKind.Known));
}
private FlightEnabledAbstractValue WithRootParent(FlightEnabledAbstractValue newRoot)
{
Debug.Assert(Kind == FlightEnabledAbstractValueKind.Known);
var newHeight = Height + newRoot.Height + 1;
if (Parents.IsEmpty)
{
return(new FlightEnabledAbstractValue(EnabledFlights, ImmutableHashSet.Create(newRoot), newHeight, FlightEnabledAbstractValueKind.Known));
}
using var parentsBuilder = PooledHashSet <FlightEnabledAbstractValue> .GetInstance();
foreach (var parent in Parents)
{
parentsBuilder.Add(parent.WithRootParent(newRoot));
}
return(new FlightEnabledAbstractValue(EnabledFlights, parentsBuilder.ToImmutable(), newHeight, FlightEnabledAbstractValueKind.Known));
}
internal static BindingDiagnosticBag GetInstance(bool withDiagnostics, bool withDependencies)
{
if (withDiagnostics)
{
if (withDependencies)
{
return(GetInstance());
}
return(new BindingDiagnosticBag(DiagnosticBag.GetInstance()));
}
else if (withDependencies)
{
return(new BindingDiagnosticBag(diagnosticBag: null, PooledHashSet <AssemblySymbol> .GetInstance()));
}
else
{
return(Discarded);
}
}
private static ImmutableHashSet <INamedTypeSymbol> GetTypesToIgnore(Compilation compilation)
{
var builder = PooledHashSet <INamedTypeSymbol> .GetInstance();
var xmlWriter = WellKnownTypes.XmlWriter(compilation);
if (xmlWriter != null)
{
builder.Add(xmlWriter);
}
var webUILiteralControl = WellKnownTypes.WebUILiteralControl(compilation);
if (webUILiteralControl != null)
{
builder.Add(webUILiteralControl);
}
var unitTestingAssert = WellKnownTypes.UnitTestingAssert(compilation);
if (unitTestingAssert != null)
{
builder.Add(unitTestingAssert);
}
var unitTestingCollectionAssert = WellKnownTypes.UnitTestingCollectionAssert(compilation);
if (unitTestingCollectionAssert != null)
{
builder.Add(unitTestingCollectionAssert);
}
var unitTestingCollectionStringAssert = WellKnownTypes.UnitTestingCollectionStringAssert(compilation);
if (unitTestingCollectionStringAssert != null)
{
builder.Add(unitTestingCollectionStringAssert);
}
return(builder.ToImmutableAndFree());
}
public static TBlockAnalysisData Run(ControlFlowGraph controlFlowGraph, DataFlowAnalyzer <TBlockAnalysisData> analyzer, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var blocks = controlFlowGraph.Blocks;
var continueDispatchAfterFinally = PooledDictionary <ControlFlowRegion, bool> .GetInstance();
var dispatchedExceptionsFromRegions = PooledHashSet <ControlFlowRegion> .GetInstance();
var firstBlockOrdinal = 0;
var lastBlockOrdinal = blocks.Length - 1;
var unreachableBlocksToVisit = ArrayBuilder <BasicBlock> .GetInstance();
if (analyzer.AnalyzeUnreachableBlocks)
{
for (var i = firstBlockOrdinal; i <= lastBlockOrdinal; i++)
{
if (!blocks[i].IsReachable)
{
unreachableBlocksToVisit.Add(blocks[i]);
}
}
}
var initialAnalysisData = analyzer.GetCurrentAnalysisData(blocks[0]);
var result = RunCore(blocks, analyzer, firstBlockOrdinal, lastBlockOrdinal,
initialAnalysisData,
unreachableBlocksToVisit,
outOfRangeBlocksToVisit: null,
continueDispatchAfterFinally,
dispatchedExceptionsFromRegions,
cancellationToken);
Debug.Assert(unreachableBlocksToVisit.Count == 0);
unreachableBlocksToVisit.Free();
continueDispatchAfterFinally.Free();
dispatchedExceptionsFromRegions.Free();
return(result);
}
private static ImmutableHashSet <INamedTypeSymbol> GetTypesToIgnore(Compilation compilation)
{
var builder = PooledHashSet <INamedTypeSymbol> .GetInstance();
var xmlWriter = compilation.GetTypeByMetadataName(WellKnownTypeNames.SystemXmlXmlWriter);
if (xmlWriter != null)
{
builder.Add(xmlWriter);
}
var webUILiteralControl = compilation.GetTypeByMetadataName(WellKnownTypeNames.SystemWebUILiteralControl);
if (webUILiteralControl != null)
{
builder.Add(webUILiteralControl);
}
var unitTestingAssert = compilation.GetTypeByMetadataName(WellKnownTypeNames.MicrosoftVisualStudioTestToolsUnitTestingAssert);
if (unitTestingAssert != null)
{
builder.Add(unitTestingAssert);
}
var unitTestingCollectionAssert = compilation.GetTypeByMetadataName(WellKnownTypeNames.MicrosoftVisualStudioTestToolsUnitTestingCollectionAssert);
if (unitTestingCollectionAssert != null)
{
builder.Add(unitTestingCollectionAssert);
}
var unitTestingCollectionStringAssert = compilation.GetTypeByMetadataName(WellKnownTypeNames.MicrosoftVisualStudioTestToolsUnitTestingStringAssert);
if (unitTestingCollectionStringAssert != null)
{
builder.Add(unitTestingCollectionStringAssert);
}
return(builder.ToImmutableAndFree());
}
private void ComputeLambdaScopesAndFrameCaptures()
{
VisitNestedFunctions(ScopeTree, (scope, function) =>
{
if (function.CapturedEnvironments.Count > 0)
{
var capturedEnvs = PooledHashSet <ClosureEnvironment> .GetInstance();
capturedEnvs.AddAll(function.CapturedEnvironments);
// Find the nearest captured class environment, if one exists
var curScope = scope;
while (curScope != null)
{
var env = curScope.DeclaredEnvironment;
if (!(env is null) && capturedEnvs.Remove(env) && !env.IsStruct)
{
function.ContainingEnvironmentOpt = env;
break;
}
curScope = curScope.Parent;
}
public void TrackAssignmentWithAbstractLocation(
IAssignmentOperation assignmentOperation,
AbstractLocation abstractLocation)
{
if (this.AbstractLocationsToAssignments == null)
{
this.AbstractLocationsToAssignments =
PooledDictionary <AbstractLocation, PooledHashSet <IAssignmentOperation> > .GetInstance();
}
if (!this.AbstractLocationsToAssignments.TryGetValue(
abstractLocation,
out PooledHashSet <IAssignmentOperation> assignments))
{
assignments = PooledHashSet <IAssignmentOperation> .GetInstance();
this.AbstractLocationsToAssignments.Add(abstractLocation, assignments);
}
assignments.Add(assignmentOperation);
}
protected sealed override void StopTrackingDataForParameters(ImmutableDictionary <IParameterSymbol, AnalysisEntity> parameterEntities)
{
if (parameterEntities.Count > 0)
{
var allEntities = PooledHashSet <AnalysisEntity> .GetInstance();
try
{
AddTrackedEntities(allEntities);
foreach (AnalysisEntity parameterEntity in parameterEntities.Values)
{
StopTrackingDataForEntity(parameterEntity, CurrentAnalysisData, allEntities);
}
}
finally
{
allEntities.Free();
}
}
}
static WebOutputSinks()
{
// TODO paulming: Review why InformationDisclosure and XSS sinks are different.
var builder = PooledHashSet <SinkInfo> .GetInstance();
SinkKind[] sinkKinds = new SinkKind[] { SinkKind.InformationDisclosure, SinkKind.Xss };
builder.AddSinkInfo(
WellKnownTypeNames.SystemWebUIITextControl,
sinkKinds,
isInterface: true,
isAnyStringParameterInConstructorASink: false,
sinkProperties: new[] { "Text" },
sinkMethodParameters: null);
builder.AddSinkInfo(
WellKnownTypeNames.SystemWebHttpResponseBase,
sinkKinds,
isInterface: false,
isAnyStringParameterInConstructorASink: false,
sinkProperties: null,
sinkMethodParameters: new[] {
private static ImmutableArray <T> AddMissing <T>(ImmutableArray <T> a, IEnumerable <T> b) where T : class
{
var builder = ArrayBuilder <T> .GetInstance();
var set = PooledHashSet <T> .GetInstance();
foreach (var i in a)
{
set.Add(i);
builder.Add(i);
}
foreach (var i in b)
{
if ((i != null) && !set.Contains(i))
{
builder.Add(i);
}
}
set.Free();
return(builder.ToImmutableAndFree());
}
public static Imports FromGlobalUsings(CSharpCompilation compilation)
{
var usings = compilation.Options.Usings;
var diagnostics = new DiagnosticBag();
var usingsBinder = new InContainerBinder(compilation.GlobalNamespace, new BuckStopsHereBinder(compilation));
var boundUsings = ArrayBuilder <NamespaceOrTypeAndUsingDirective> .GetInstance();
var uniqueUsings = PooledHashSet <NamespaceOrTypeSymbol> .GetInstance();
foreach (string @using in usings)
{
if ([email protected]())
{
continue;
}
string[] identifiers = @using.Split('.');
NameSyntax qualifiedName = SyntaxFactory.IdentifierName(identifiers[0]);
for (int j = 1; j < identifiers.Length; j++)
{
qualifiedName = SyntaxFactory.QualifiedName(left: qualifiedName, right: SyntaxFactory.IdentifierName(identifiers[j]));
}
var imported = usingsBinder.BindNamespaceOrTypeSymbol(qualifiedName, diagnostics);
if (uniqueUsings.Add(imported))
{
boundUsings.Add(new NamespaceOrTypeAndUsingDirective(imported, null));
}
}
uniqueUsings.Free();
if (diagnostics.IsEmptyWithoutResolution)
{
diagnostics = null;
}
return(new Imports(compilation, ImmutableDictionary <string, AliasAndUsingDirective> .Empty, boundUsings.ToImmutableAndFree(), ImmutableArray <AliasAndExternAliasDirective> .Empty, diagnostics));
}
public bool Equals(BasicBlockAnalysisData other)
{
// Check if both _reachingWrites maps have same key-value pair count.
if (other == null ||
other._reachingWrites.Count != _reachingWrites.Count)
{
return(false);
}
var uniqueSymbols = PooledHashSet <ISymbol> .GetInstance();
try
{
// Check if both _reachingWrites maps have same set of keys.
uniqueSymbols.AddRange(_reachingWrites.Keys);
uniqueSymbols.AddRange(other._reachingWrites.Keys);
if (uniqueSymbols.Count != _reachingWrites.Count)
{
return(false);
}
// Check if both _reachingWrites maps have same set of write
// operations for each tracked symbol.
foreach (var symbol in uniqueSymbols)
{
var writes1 = _reachingWrites[symbol];
var writes2 = other._reachingWrites[symbol];
if (!writes1.SetEquals(writes2))
{
return(false);
}
}
return(true);
}
finally
{
uniqueSymbols.Free();
}
}
private static void ReportInitializedNotUsedNotInitializedUsedVars(
SyntaxNodeAnalysisContext context,
Dictionary <string, IdentifierNameSyntax> firstGlobalVarInitializerSyntax,
Dictionary <string, IdentifierNameSyntax> firstGlobalVarUsageSyntax,
Dictionary <string, VariableDeclarationBaseSyntax> globalVariables)
{
PooledHashSet <IdentifierNameSyntax> instance1 = PooledHashSet <IdentifierNameSyntax> .GetInstance();
PooledHashSet <IdentifierNameSyntax> instance2 = PooledHashSet <IdentifierNameSyntax> .GetInstance();
try
{
VariableInitializationUsageAnalyzer.CollectInitializedNotUsedNotInitializedUsedGlobalVars((HashSet <IdentifierNameSyntax>)instance2, (HashSet <IdentifierNameSyntax>)instance1, firstGlobalVarInitializerSyntax, firstGlobalVarUsageSyntax, globalVariables);
VariableInitializationUsageAnalyzer.ReportInitializedNotUsedVariables(new Action <Diagnostic>(context.ReportDiagnostic), instance1);
VariableInitializationUsageAnalyzer.ReportNotInitializedVariables(new Action <Diagnostic>(context.ReportDiagnostic), instance2);
}
finally
{
instance1.Free();
instance2.Free();
}
}
private void ApplyMissingCurrentAnalysisDataCore(CopyAnalysisData mergedData, Func <AnalysisEntity, bool> predicateOpt)
{
var processedEntities = PooledHashSet <AnalysisEntity> .GetInstance();
try
{
foreach (var kvp in CurrentAnalysisData.CoreAnalysisData)
{
var key = kvp.Key;
var copyValue = kvp.Value;
if (mergedData.CoreAnalysisData.ContainsKey(key) ||
(predicateOpt != null && !predicateOpt(key)) ||
!processedEntities.Add(key))
{
continue;
}
if (predicateOpt != null && copyValue.AnalysisEntities.Count > 1)
{
var entitiesToRemove = copyValue.AnalysisEntities.Where(entity => key != entity && !predicateOpt(entity));
if (entitiesToRemove.Any())
{
copyValue = copyValue.WithEntitiesRemoved(entitiesToRemove);
}
}
Debug.Assert(copyValue.AnalysisEntities.Contains(key));
Debug.Assert(predicateOpt == null || copyValue.AnalysisEntities.All(predicateOpt));
mergedData.SetAbstactValueForEntities(copyValue, entityBeingAssignedOpt: null);
processedEntities.AddRange(copyValue.AnalysisEntities);
}
AssertValidCopyAnalysisData(mergedData);
}
finally
{
processedEntities.Free();
}
}
private static ImmutableHashSet <INamedTypeSymbol> GetDisposeOwnershipTransferLikelyTypes(Compilation compilation)
{
var builder = PooledHashSet <INamedTypeSymbol> .GetInstance();
try
{
foreach (var typeName in s_disposeOwnershipTransferLikelyTypes)
{
var typeSymbol = compilation.GetTypeByMetadataName(typeName);
if (typeSymbol != null)
{
builder.Add(typeSymbol);
}
}
return(builder.ToImmutableHashSet());
}
finally
{
builder.Free();
}
}
PooledHashSet <ISymbol> GetCandidateSymbolsReferencedInDocComments(INamedTypeSymbol namedTypeSymbol, Compilation compilation, CancellationToken cancellationToken)
{
var builder = PooledHashSet <ISymbol> .GetInstance();
foreach (var root in namedTypeSymbol.Locations.Select(l => l.SourceTree.GetRoot(cancellationToken)))
{
SemanticModel lazyModel = null;
foreach (var node in root.DescendantNodes(descendIntoTrivia: true)
.OfType <TDocumentationCommentTriviaSyntax>()
.SelectMany(n => n.DescendantNodes().OfType <TIdentifierNameSyntax>()))
{
lazyModel = lazyModel ?? compilation.GetSemanticModel(root.SyntaxTree);
var symbol = lazyModel.GetSymbolInfo(node, cancellationToken).Symbol;
if (symbol != null && IsCandidateSymbol(symbol))
{
builder.Add(symbol);
}
}
}
return(builder);
}
