public void Add(AssemblyIdentity identity, TValue value)
{
KeyValuePair <AssemblyIdentity, TValue> pair = KeyValuePair.Create(identity, value);
_map[identity.Name] = _map.TryGetValue(identity.Name, out OneOrMany <KeyValuePair <AssemblyIdentity, TValue> > sameName) ? sameName.Add(pair) : OneOrMany.Create(pair);
}
internal sealed override OneOrMany <SyntaxList <AttributeListSyntax> > GetAttributeDeclarations() => OneOrMany.Create(default(SyntaxList <AttributeListSyntax>));
internal override OneOrMany <SyntaxList <AttributeDeclarationSyntax> > GetAttributeDeclarations()
{
return(OneOrMany.Create(((DelegateDeclarationSyntax)SyntaxNode).Attributes));
}
/// <summary>
/// Method to merge attributes from the given attributesSyntaxLists and filter out attributes by attribute target.
/// This is the first step in attribute binding.
/// </summary>
/// <remarks>
/// This method can generate diagnostics for few cases where we have an invalid target specifier and the parser hasn't generated the necessary diagnostics.
/// It should not perform any bind operations as it can lead to an attribute binding cycle.
/// </remarks>
private ImmutableArray <AttributeSyntax> GetAttributesToBind(
OneOrMany <SyntaxList <AttributeListSyntax> > attributeDeclarationSyntaxLists,
AttributeLocation symbolPart,
DiagnosticBag diagnostics,
CSharpCompilation compilation,
out ImmutableArray <Binder> binders)
{
var attributeTarget = (IAttributeTargetSymbol)this;
ArrayBuilder <AttributeSyntax> syntaxBuilder = null;
ArrayBuilder <Binder> bindersBuilder = null;
int attributesToBindCount = 0;
for (int listIndex = 0; listIndex < attributeDeclarationSyntaxLists.Count; listIndex++)
{
var attributeDeclarationSyntaxList = attributeDeclarationSyntaxLists[listIndex];
if (attributeDeclarationSyntaxList.Any())
{
int prevCount = attributesToBindCount;
foreach (var attributeDeclarationSyntax in attributeDeclarationSyntaxList)
{
// We bind the attribute only if it has a matching target for the given ownerSymbol and attributeLocation.
if (MatchAttributeTarget(attributeTarget, symbolPart, attributeDeclarationSyntax.Target, diagnostics))
{
if (syntaxBuilder == null)
{
syntaxBuilder = new ArrayBuilder <AttributeSyntax>();
bindersBuilder = new ArrayBuilder <Binder>();
}
var attributesToBind = attributeDeclarationSyntax.Attributes;
syntaxBuilder.AddRange(attributesToBind);
attributesToBindCount += attributesToBind.Count;
}
}
if (attributesToBindCount != prevCount)
{
Debug.Assert(attributeDeclarationSyntaxList.Node != null);
Debug.Assert(bindersBuilder != null);
var syntaxTree = attributeDeclarationSyntaxList.Node.SyntaxTree;
var binder = compilation.GetBinderFactory(syntaxTree).GetBinder((CSharpSyntaxNode)attributeDeclarationSyntaxList.Node);
binder = new ContextualAttributeBinder(binder, this);
Debug.Assert(!binder.InAttributeArgument, "Possible cycle in attribute binding");
for (int i = 0; i < attributesToBindCount - prevCount; i++)
{
bindersBuilder.Add(binder);
}
}
}
}
if (syntaxBuilder != null)
{
binders = bindersBuilder.ToImmutableAndFree();
return(syntaxBuilder.ToImmutableAndFree());
}
else
{
binders = ImmutableArray <Binder> .Empty;
return(ImmutableArray <AttributeSyntax> .Empty);
}
}
internal override OneOrMany <SyntaxList <AttributeListSyntax> > GetAttributeDeclarations()
{
return(OneOrMany.Create(((ConstructorDeclarationSyntax)this.SyntaxNode).AttributeLists));
}
/// <summary>
/// This method does the following set of operations in the specified order:
/// (1) GetAttributesToBind: Merge attributes from the given attributesSyntaxLists and filter out attributes by attribute target.
/// (2) BindAttributeTypes: Bind all the attribute types to enable early decode of certain well-known attributes by type.
/// (3) EarlyDecodeWellKnownAttributes: Perform early decoding of certain well-known attributes that could be queried by the binder in subsequent steps.
/// (NOTE: This step has the side effect of updating the symbol state based on the data extracted from well known attributes).
/// (4) GetAttributes: Bind the attributes (attribute arguments and constructor) using bound attribute types.
/// (5) DecodeWellKnownAttributes: Decode and validate bound well known attributes.
/// (NOTE: This step has the side effect of updating the symbol state based on the data extracted from well known attributes).
/// (6) StoreBoundAttributesAndDoPostValidation:
/// (a) Store the bound attributes in lazyCustomAttributes in a thread safe manner.
/// (b) Perform some additional post attribute validations, such as
/// 1) Duplicate attributes, attribute usage target validation, etc.
/// 2) Post validation for attributes dependant on other attributes
/// These validations cannot be performed prior to step 6(a) as we might need to
/// perform a GetAttributes() call on a symbol which can introduce a cycle in attribute binding.
/// We avoid this cycle by performing such validations in PostDecodeWellKnownAttributes after lazyCustomAttributes have been set.
/// NOTE: PostDecodeWellKnownAttributes SHOULD NOT change the symbol state.
/// </summary>
/// <remarks>
/// Current design of early decoding well-known attributes doesn't permit decoding attribute arguments/constructor as this can lead to binding cycles.
/// For well-known attributes used by the binder, where we need the decoded arguments, we must handle them specially in one of the following possible ways:
/// (a) Avoid decoding the attribute arguments during binding and delay the corresponding binder tasks to a separate post-pass executed after binding.
/// (b) As the cycles can be caused only when we are binding attribute arguments/constructor, special case the corresponding binder tasks based on the current BinderFlags.
/// </remarks>
/// <param name="attributesSyntaxLists"></param>
/// <param name="lazyCustomAttributesBag"></param>
/// <param name="symbolPart">Specific part of the symbol to which the attributes apply, or <see cref="AttributeLocation.None"/> if the attributes apply to the symbol itself.</param>
/// <param name="earlyDecodingOnly">Indicates that only early decoding should be performed. WARNING: the resulting bag will not be sealed.</param>
/// <returns>Flag indicating whether lazyCustomAttributes were stored on this thread. Caller should check for this flag and perform NotePartComplete if true.</returns>
internal bool LoadAndValidateAttributes(
OneOrMany<SyntaxList<AttributeListSyntax>> attributesSyntaxLists,
ref CustomAttributesBag<CSharpAttributeData> lazyCustomAttributesBag,
AttributeLocation symbolPart = AttributeLocation.None,
bool earlyDecodingOnly = false)
{
var diagnostics = DiagnosticBag.GetInstance();
var compilation = this.DeclaringCompilation;
ImmutableArray<Binder> binders;
ImmutableArray<AttributeSyntax> attributesToBind = this.GetAttributesToBind(attributesSyntaxLists, symbolPart, diagnostics, compilation, out binders);
Debug.Assert(!attributesToBind.IsDefault);
ImmutableArray<CSharpAttributeData> boundAttributes;
WellKnownAttributeData wellKnownAttributeData;
if (attributesToBind.Any())
{
Debug.Assert(!binders.IsDefault);
Debug.Assert(binders.Length == attributesToBind.Length);
// Initialize the bag so that data decoded from early attributes can be stored onto it.
if (lazyCustomAttributesBag == null)
{
Interlocked.CompareExchange(ref lazyCustomAttributesBag, new CustomAttributesBag<CSharpAttributeData>(), null);
}
// Bind the attribute types and then early decode them.
int totalAttributesCount = attributesToBind.Length;
var attributeTypesBuilder = new NamedTypeSymbol[totalAttributesCount];
Binder.BindAttributeTypes(binders, attributesToBind, this, attributeTypesBuilder, diagnostics);
ImmutableArray<NamedTypeSymbol> boundAttributeTypes = attributeTypesBuilder.AsImmutableOrNull();
this.EarlyDecodeWellKnownAttributeTypes(boundAttributeTypes, attributesToBind);
this.PostEarlyDecodeWellKnownAttributeTypes();
// Bind the attribute in two stages - early and normal.
var attributesBuilder = new CSharpAttributeData[totalAttributesCount];
// Early bind and decode some well-known attributes.
EarlyWellKnownAttributeData earlyData = this.EarlyDecodeWellKnownAttributes(binders, boundAttributeTypes, attributesToBind, symbolPart, attributesBuilder);
Debug.Assert(!attributesBuilder.Contains((attr) => attr != null && attr.HasErrors));
// Store data decoded from early bound well-known attributes.
// TODO: what if this succeeds on another thread, not ours?
lazyCustomAttributesBag.SetEarlyDecodedWellKnownAttributeData(earlyData);
if (earlyDecodingOnly)
{
diagnostics.Free(); //NOTE: dropped.
return false;
}
// Bind attributes.
Binder.GetAttributes(binders, attributesToBind, boundAttributeTypes, attributesBuilder, diagnostics);
boundAttributes = attributesBuilder.AsImmutableOrNull();
// All attributes must be bound by now.
Debug.Assert(!boundAttributes.Any((attr) => attr == null));
// Validate attribute usage and Decode remaining well-known attributes.
wellKnownAttributeData = this.ValidateAttributeUsageAndDecodeWellKnownAttributes(binders, attributesToBind, boundAttributes, diagnostics, symbolPart);
// Store data decoded from remaining well-known attributes.
// TODO: what if this succeeds on another thread but not this thread?
lazyCustomAttributesBag.SetDecodedWellKnownAttributeData(wellKnownAttributeData);
}
else if (earlyDecodingOnly)
{
diagnostics.Free(); //NOTE: dropped.
return false;
}
else
{
boundAttributes = ImmutableArray<CSharpAttributeData>.Empty;
wellKnownAttributeData = null;
Interlocked.CompareExchange(ref lazyCustomAttributesBag, CustomAttributesBag<CSharpAttributeData>.WithEmptyData(), null);
this.PostEarlyDecodeWellKnownAttributeTypes();
}
this.PostDecodeWellKnownAttributes(boundAttributes, attributesToBind, diagnostics, symbolPart, wellKnownAttributeData);
// Store attributes into the bag.
bool lazyAttributesStoredOnThisThread = false;
if (lazyCustomAttributesBag.SetAttributes(boundAttributes))
{
this.RecordPresenceOfBadAttributes(boundAttributes);
this.AddDeclarationDiagnostics(diagnostics);
lazyAttributesStoredOnThisThread = true;
if (lazyCustomAttributesBag.IsEmpty) lazyCustomAttributesBag = CustomAttributesBag<CSharpAttributeData>.Empty;
}
Debug.Assert(lazyCustomAttributesBag.IsSealed);
diagnostics.Free();
return lazyAttributesStoredOnThisThread;
}
public void Zero()
{
Verify(OneOrMany.Create(ImmutableArray <int> .Empty));
Verify(new OneOrMany <int>(ImmutableArray <int> .Empty));
}
internal override OneOrMany <SyntaxList <AttributeListSyntax> > GetReturnTypeAttributeDeclarations()
{
// Constructors don't have return type attributes
return(OneOrMany.Create(default(SyntaxList <AttributeListSyntax>)));
}
public void ImplicitConversionOperator_FromArray_HasTwoItems()
{
int[] items = new OneOrMany <int>(1, 2);
Assert.Equal(new int[] { 1, 2 }, items);
}
> GetReturnTypeAttributeDeclarations()
{
// destructors can't have return type attributes
return(OneOrMany.Create(default(SyntaxList <AttributeListSyntax>)));
}
public void ImplicitConversionOperator_FromItem_HasOneItem()
{
int item = new OneOrMany <int>(1);
Assert.Equal(1, item);
}
internal override OneOrMany <SyntaxList <AttributeListSyntax> > GetAttributeDeclarations() => OneOrMany.Create(_attributeLists);
> GetAttributeDeclarations()
{
return(OneOrMany.Create(this.GetSyntax().AttributeLists));
}
internal override OneOrMany <SyntaxList <AttributeListSyntax> > GetAttributeDeclarations()
{
// destructors can't have return type attributes
return(OneOrMany.Create(this.GetSyntax().AttributeLists));
}
public async Task <IActionResult> Details(string i)
{
string apiUrl = configuration.GetValue <string>("api:url");
string apiKey = configuration.GetValue <string>("api:key");
UriBuilder baseUri = new UriBuilder(apiUrl + "?apiKey=" + apiKey);
Details details = null;
if (i != null && i.Length > 0)
{
string queryToAppend = "i=" + i;
if (baseUri.Query != null && baseUri.Query.Length > 1)
{
baseUri.Query = baseUri.Query.Substring(1) + "&" + queryToAppend;
}
else
{
baseUri.Query = queryToAppend;
}
string url = baseUri.ToString();
using (var httpClient = new HttpClient())
{
using (var response = await httpClient.GetAsync(url))
{
string apiResponse = await response.Content.ReadAsStringAsync();
JObject o = JObject.Parse(apiResponse);
if ((string)o["Response"] == "True")
{
details = JsonConvert.DeserializeObject <Details>(apiResponse);
}
}
}
}
Person actor = new Person()
{
Name = new List <String>()
{
details.Actors
}
};
Person director = new Person()
{
Name = details.Director
};
Country c = new Country()
{
Name = details.Country
};
int minDuration = 0;
if (details.Runtime.Length > 0 && details.Runtime.Contains(' '))
{
string[] sDuration = details.Runtime.Split(' ');
if (sDuration.Length > 0)
{
minDuration = int.Parse(sDuration[0]);
}
}
int hours = 0,
minutes = 0;
if (minDuration > 0)
{
hours = minDuration / 60;
minutes = minDuration % 60;
}
OneOrMany <TimeSpan?> duration = new OneOrMany <TimeSpan?>(new TimeSpan(hours, minutes, 0));
var organization = new Organization()
{
Name = details.Production
};
var movieSchema = new Schema.NET.Movie()
{
Actor = actor,
CountryOfOrigin = c,
Director = director,
Duration = duration,
SubtitleLanguage = details.Language,
ProductionCompany = organization
};
ViewBag.JsonLd = movieSchema.ToString();
return(View(details));
}
internal sealed override OneOrMany <SyntaxList <AttributeListSyntax> > GetAttributeDeclarations()
{
// TODO: This implementation looks strange. It might make sense for the Invoke method, but
// not for constructor and other methods.
return(OneOrMany.Create(((SourceNamedTypeSymbol)ContainingSymbol).GetAttributeDeclarations()));
}
internal sealed override OneOrMany <SyntaxList <AttributeListSyntax> > GetAttributeDeclarations()
{
return(OneOrMany.Create(((BaseMethodDeclarationSyntax)this.SyntaxNode).AttributeLists));
}
internal sealed override OneOrMany <SyntaxList <AttributeListSyntax> > GetAttributeDeclarations()
{
return(OneOrMany.Create(this.GetSyntax().AttributeLists));
}
internal override OneOrMany <SyntaxList <AttributeListSyntax> > GetAttributeDeclarations()
{
return(OneOrMany.Create(Syntax.AttributeLists));
}
internal override OneOrMany <SyntaxList <AttributeListSyntax> > GetAttributeDeclarations()
{
return(OneOrMany.Create(this.AssociatedEvent.AttributeDeclarationSyntaxList));
}
/// <summary>
/// This method does the following set of operations in the specified order:
/// (1) GetAttributesToBind: Merge attributes from the given attributesSyntaxLists and filter out attributes by attribute target.
/// (2) BindAttributeTypes: Bind all the attribute types to enable early decode of certain well-known attributes by type.
/// (3) EarlyDecodeWellKnownAttributes: Perform early decoding of certain well-known attributes that could be queried by the binder in subsequent steps.
/// (NOTE: This step has the side effect of updating the symbol state based on the data extracted from well known attributes).
/// (4) GetAttributes: Bind the attributes (attribute arguments and constructor) using bound attribute types.
/// (5) DecodeWellKnownAttributes: Decode and validate bound well known attributes.
/// (NOTE: This step has the side effect of updating the symbol state based on the data extracted from well known attributes).
/// (6) StoreBoundAttributesAndDoPostValidation:
/// (a) Store the bound attributes in lazyCustomAttributes in a thread safe manner.
/// (b) Perform some additional post attribute validations, such as
/// 1) Duplicate attributes, attribute usage target validation, etc.
/// 2) Post validation for attributes dependant on other attributes
/// These validations cannot be performed prior to step 6(a) as we might need to
/// perform a GetAttributes() call on a symbol which can introduce a cycle in attribute binding.
/// We avoid this cycle by performing such validations in PostDecodeWellKnownAttributes after lazyCustomAttributes have been set.
/// NOTE: PostDecodeWellKnownAttributes SHOULD NOT change the symbol state.
/// </summary>
/// <remarks>
/// Current design of early decoding well-known attributes doesn't permit decoding attribute arguments/constructor as this can lead to binding cycles.
/// For well-known attributes used by the binder, where we need the decoded arguments, we must handle them specially in one of the following possible ways:
/// (a) Avoid decoding the attribute arguments during binding and delay the corresponding binder tasks to a separate post-pass executed after binding.
/// (b) As the cycles can be caused only when we are binding attribute arguments/constructor, special case the corresponding binder tasks based on the current BinderFlags.
/// </remarks>
/// <param name="attributesSyntaxLists"></param>
/// <param name="lazyCustomAttributesBag"></param>
/// <param name="symbolPart">Specific part of the symbol to which the attributes apply, or <see cref="AttributeLocation.None"/> if the attributes apply to the symbol itself.</param>
/// <param name="earlyDecodingOnly">Indicates that only early decoding should be performed. WARNING: the resulting bag will not be sealed.</param>
/// <returns>Flag indicating whether lazyCustomAttributes were stored on this thread. Caller should check for this flag and perform NotePartComplete if true.</returns>
internal bool LoadAndValidateAttributes(
OneOrMany <SyntaxList <AttributeListSyntax> > attributesSyntaxLists,
ref CustomAttributesBag <CSharpAttributeData> lazyCustomAttributesBag,
AttributeLocation symbolPart = AttributeLocation.None,
bool earlyDecodingOnly = false)
{
var diagnostics = DiagnosticBag.GetInstance();
var compilation = this.DeclaringCompilation;
ImmutableArray <Binder> binders;
ImmutableArray <AttributeSyntax> attributesToBind = this.GetAttributesToBind(attributesSyntaxLists, symbolPart, diagnostics, compilation, out binders);
Debug.Assert(!attributesToBind.IsDefault);
ImmutableArray <CSharpAttributeData> boundAttributes;
WellKnownAttributeData wellKnownAttributeData;
if (attributesToBind.Any())
{
Debug.Assert(!binders.IsDefault);
Debug.Assert(binders.Length == attributesToBind.Length);
// Initialize the bag so that data decoded from early attributes can be stored onto it.
if (lazyCustomAttributesBag == null)
{
Interlocked.CompareExchange(ref lazyCustomAttributesBag, new CustomAttributesBag <CSharpAttributeData>(), null);
}
// Bind the attribute types and then early decode them.
int totalAttributesCount = attributesToBind.Length;
var attributeTypesBuilder = new NamedTypeSymbol[totalAttributesCount];
Binder.BindAttributeTypes(binders, attributesToBind, this, attributeTypesBuilder, diagnostics);
ImmutableArray <NamedTypeSymbol> boundAttributeTypes = attributeTypesBuilder.AsImmutableOrNull();
this.EarlyDecodeWellKnownAttributeTypes(boundAttributeTypes, attributesToBind);
this.PostEarlyDecodeWellKnownAttributeTypes();
// Bind the attribute in two stages - early and normal.
var attributesBuilder = new CSharpAttributeData[totalAttributesCount];
// Early bind and decode some well-known attributes.
EarlyWellKnownAttributeData earlyData = this.EarlyDecodeWellKnownAttributes(binders, boundAttributeTypes, attributesToBind, symbolPart, attributesBuilder);
Debug.Assert(!attributesBuilder.Contains((attr) => attr != null && attr.HasErrors));
// Store data decoded from early bound well-known attributes.
// TODO: what if this succeeds on another thread, not ours?
lazyCustomAttributesBag.SetEarlyDecodedWellKnownAttributeData(earlyData);
if (earlyDecodingOnly)
{
diagnostics.Free(); //NOTE: dropped.
return(false);
}
// Bind attributes.
Binder.GetAttributes(binders, attributesToBind, boundAttributeTypes, attributesBuilder, diagnostics);
boundAttributes = attributesBuilder.AsImmutableOrNull();
// All attributes must be bound by now.
Debug.Assert(!boundAttributes.Any((attr) => attr == null));
// Validate attribute usage and Decode remaining well-known attributes.
wellKnownAttributeData = this.ValidateAttributeUsageAndDecodeWellKnownAttributes(binders, attributesToBind, boundAttributes, diagnostics, symbolPart);
// Store data decoded from remaining well-known attributes.
// TODO: what if this succeeds on another thread but not this thread?
lazyCustomAttributesBag.SetDecodedWellKnownAttributeData(wellKnownAttributeData);
}
else if (earlyDecodingOnly)
{
diagnostics.Free(); //NOTE: dropped.
return(false);
}
else
{
boundAttributes = ImmutableArray <CSharpAttributeData> .Empty;
wellKnownAttributeData = null;
Interlocked.CompareExchange(ref lazyCustomAttributesBag, CustomAttributesBag <CSharpAttributeData> .WithEmptyData(), null);
this.PostEarlyDecodeWellKnownAttributeTypes();
}
this.PostDecodeWellKnownAttributes(boundAttributes, attributesToBind, diagnostics, symbolPart, wellKnownAttributeData);
// Store attributes into the bag.
bool lazyAttributesStoredOnThisThread = false;
if (lazyCustomAttributesBag.SetAttributes(boundAttributes))
{
this.RecordPresenceOfBadAttributes(boundAttributes);
this.AddDeclarationDiagnostics(diagnostics);
lazyAttributesStoredOnThisThread = true;
if (lazyCustomAttributesBag.IsEmpty)
{
lazyCustomAttributesBag = CustomAttributesBag <CSharpAttributeData> .Empty;
}
}
Debug.Assert(lazyCustomAttributesBag.IsSealed);
diagnostics.Free();
return(lazyAttributesStoredOnThisThread);
}
/// <summary>
/// Method to merge attributes from the given attributesSyntaxLists and filter out attributes by attribute target.
/// This is the first step in attribute binding.
/// </summary>
/// <remarks>
/// This method can generate diagnostics for few cases where we have an invalid target specifier and the parser hasn't generated the necessary diagnostics.
/// It should not perform any bind operations as it can lead to an attribute binding cycle.
/// </remarks>
private ImmutableArray<AttributeSyntax> GetAttributesToBind(
OneOrMany<SyntaxList<AttributeListSyntax>> attributeDeclarationSyntaxLists,
AttributeLocation symbolPart,
DiagnosticBag diagnostics,
CSharpCompilation compilation,
out ImmutableArray<Binder> binders)
{
var attributeTarget = (IAttributeTargetSymbol)this;
ArrayBuilder<AttributeSyntax> syntaxBuilder = null;
ArrayBuilder<Binder> bindersBuilder = null;
int attributesToBindCount = 0;
for (int listIndex = 0; listIndex < attributeDeclarationSyntaxLists.Count; listIndex++)
{
var attributeDeclarationSyntaxList = attributeDeclarationSyntaxLists[listIndex];
if (attributeDeclarationSyntaxList.Any())
{
int prevCount = attributesToBindCount;
foreach (var attributeDeclarationSyntax in attributeDeclarationSyntaxList)
{
// We bind the attribute only if it has a matching target for the given ownerSymbol and attributeLocation.
if (MatchAttributeTarget(attributeTarget, symbolPart, attributeDeclarationSyntax.Target, diagnostics))
{
if (syntaxBuilder == null)
{
syntaxBuilder = new ArrayBuilder<AttributeSyntax>();
bindersBuilder = new ArrayBuilder<Binder>();
}
var attributesToBind = attributeDeclarationSyntax.Attributes;
syntaxBuilder.AddRange(attributesToBind);
attributesToBindCount += attributesToBind.Count;
}
}
if (attributesToBindCount != prevCount)
{
Debug.Assert(attributeDeclarationSyntaxList.Node != null);
Debug.Assert(bindersBuilder != null);
var syntaxTree = attributeDeclarationSyntaxList.Node.SyntaxTree;
var binder = compilation.GetBinderFactory(syntaxTree).GetBinder((CSharpSyntaxNode)attributeDeclarationSyntaxList.Node);
binder = new ContextualAttributeBinder(binder, this);
Debug.Assert(!binder.InAttributeArgument, "Possible cycle in attribute binding");
for (int i = 0; i < attributesToBindCount - prevCount; i++)
{
bindersBuilder.Add(binder);
}
}
}
}
if (syntaxBuilder != null)
{
binders = bindersBuilder.ToImmutableAndFree();
return syntaxBuilder.ToImmutableAndFree();
}
else
{
binders = ImmutableArray<Binder>.Empty;
return ImmutableArray<AttributeSyntax>.Empty;
}
}
private ImmutableArray <AttributeSyntax> GetAttributesToBind(
OneOrMany <SyntaxList <AttributeListSyntax> > attributeDeclarationSyntaxLists,
AttributeLocation symbolPart,
BindingDiagnosticBag diagnostics,
CSharpCompilation compilation,
Func <AttributeSyntax, bool> attributeMatchesOpt,
Binder rootBinderOpt,
out ImmutableArray <Binder> binders)
{
var attributeTarget = (IAttributeTargetSymbol)this;
ArrayBuilder <AttributeSyntax> syntaxBuilder = null;
ArrayBuilder <Binder> bindersBuilder = null;
int attributesToBindCount = 0;
for (int listIndex = 0; listIndex < attributeDeclarationSyntaxLists.Count; listIndex++)
{
var attributeDeclarationSyntaxList = attributeDeclarationSyntaxLists[listIndex];
if (attributeDeclarationSyntaxList.Any())
{
int prevCount = attributesToBindCount;
foreach (var attributeDeclarationSyntax in attributeDeclarationSyntaxList)
{
// We bind the attribute only if it has a matching target for the given ownerSymbol and attributeLocation.
if (MatchAttributeTarget(attributeTarget, symbolPart, attributeDeclarationSyntax.Target, diagnostics))
{
if (syntaxBuilder == null)
{
syntaxBuilder = new ArrayBuilder <AttributeSyntax>();
bindersBuilder = new ArrayBuilder <Binder>();
}
var attributesToBind = attributeDeclarationSyntax.Attributes;
if (attributeMatchesOpt is null)
{
syntaxBuilder.AddRange(attributesToBind);
attributesToBindCount += attributesToBind.Count;
}
else
{
foreach (var attribute in attributesToBind)
{
if (attributeMatchesOpt(attribute))
{
syntaxBuilder.Add(attribute);
attributesToBindCount++;
}
}
}
}
}
if (attributesToBindCount != prevCount)
{
Debug.Assert(attributeDeclarationSyntaxList.Node != null);
Debug.Assert(bindersBuilder != null);
var syntaxTree = attributeDeclarationSyntaxList.Node.SyntaxTree;
var binder = rootBinderOpt ?? compilation.GetBinderFactory(syntaxTree).GetBinder(attributeDeclarationSyntaxList.Node);
binder = new ContextualAttributeBinder(binder, this);
Debug.Assert(!binder.InAttributeArgument || this is MethodSymbol {
MethodKind: MethodKind.LambdaMethod
}, "Possible cycle in attribute binding");
