private TypeWithAnnotations ComputeReturnType(DiagnosticBag diagnostics)
{
if (this.MethodKind == MethodKind.PropertyGet)
{
var type = _property.TypeWithAnnotations;
if (!ContainingType.IsInterfaceType() && type.Type.IsStatic)
{
// '{0}': static types cannot be used as return types
diagnostics.Add(ErrorCode.ERR_ReturnTypeIsStaticClass, this.locations[0], type.Type);
}
return(type);
}
else
{
var binder = GetBinder();
var type = TypeWithAnnotations.Create(binder.GetSpecialType(SpecialType.System_Void, diagnostics, this.GetSyntax()));
if (IsInitOnly)
{
var isInitOnlyType = Binder.GetWellKnownType(this.DeclaringCompilation,
WellKnownType.System_Runtime_CompilerServices_IsExternalInit, diagnostics, this.locations[0]);
var modifiers = ImmutableArray.Create <CustomModifier>(
CSharpCustomModifier.CreateRequired(isInitOnlyType));
type = type.WithModifiers(modifiers);
}
return(type);
}
}
private TypeSymbol ComputeReturnType(DiagnosticBag diagnostics)
{
if (this.MethodKind == MethodKind.PropertyGet)
{
var type = _property.Type;
if (!ContainingType.IsInterfaceType() && type.IsStatic)
{
// '{0}': static types cannot be used as return types
diagnostics.Add(ErrorCode.ERR_ReturnTypeIsStaticClass, this.locations[0], type);
}
return(type);
}
else
{
var binder = GetBinder();
return(binder.GetSpecialType(SpecialType.System_Void, diagnostics, this.GetSyntax()));
}
}
private ImmutableArray <ParameterSymbol> ComputeParameters(DiagnosticBag diagnostics)
{
bool isGetMethod = this.MethodKind == MethodKind.PropertyGet;
var propertyParameters = _property.Parameters;
int nPropertyParameters = propertyParameters.Length;
int nParameters = nPropertyParameters + (isGetMethod ? 0 : 1);
if (nParameters == 0)
{
return(ImmutableArray <ParameterSymbol> .Empty);
}
var parameters = ArrayBuilder <ParameterSymbol> .GetInstance(nParameters);
// Clone the property parameters for the accessor method. The
// parameters are cloned (rather than referenced from the property)
// since the ContainingSymbol needs to be set to the accessor.
foreach (SourceParameterSymbol propertyParam in propertyParameters)
{
parameters.Add(new SourceClonedParameterSymbol(propertyParam, this, propertyParam.Ordinal, suppressOptional: false));
}
if (!isGetMethod)
{
var propertyType = _property.TypeWithAnnotations;
if (!ContainingType.IsInterfaceType() && propertyType.IsStatic)
{
// '{0}': static types cannot be used as parameters
diagnostics.Add(ErrorCode.ERR_ParameterIsStaticClass, this.locations[0], propertyType.Type);
}
parameters.Add(new SynthesizedAccessorValueParameterSymbol(this, propertyType, parameters.Count));
}
return(parameters.ToImmutableAndFree());
}
private void CheckModifiers(Location location, DiagnosticBag diagnostics)
{
const DeclarationModifiers partialMethodInvalidModifierMask = (DeclarationModifiers.AccessibilityMask & ~DeclarationModifiers.Private) |
DeclarationModifiers.Virtual |
DeclarationModifiers.Abstract |
DeclarationModifiers.Override |
DeclarationModifiers.New |
DeclarationModifiers.Sealed |
DeclarationModifiers.Extern;
if (IsPartial && !ReturnsVoid)
{
diagnostics.Add(ErrorCode.ERR_PartialMethodMustReturnVoid, location);
}
else if (IsPartial && !ContainingType.IsInterface && (DeclarationModifiers & partialMethodInvalidModifierMask) != 0)
{
diagnostics.Add(ErrorCode.ERR_PartialMethodInvalidModifier, location);
}
else if (this.DeclaredAccessibility == Accessibility.Private && (IsVirtual || IsAbstract || IsOverride))
{
diagnostics.Add(ErrorCode.ERR_VirtualPrivate, location, this);
}
else if (IsStatic && (IsOverride || IsVirtual || IsAbstract))
{
// A static member '{0}' cannot be marked as override, virtual, or abstract
diagnostics.Add(ErrorCode.ERR_StaticNotVirtual, location, this);
}
else if (IsOverride && (IsNew || IsVirtual))
{
// A member '{0}' marked as override cannot be marked as new or virtual
diagnostics.Add(ErrorCode.ERR_OverrideNotNew, location, this);
}
else if (IsSealed && !IsOverride)
{
// '{0}' cannot be sealed because it is not an override
diagnostics.Add(ErrorCode.ERR_SealedNonOverride, location, this);
}
else if (IsSealed && ContainingType.TypeKind == TypeKind.Struct)
{
// The modifier '{0}' is not valid for this item
diagnostics.Add(ErrorCode.ERR_BadMemberFlag, location, SyntaxFacts.GetText(SyntaxKind.SealedKeyword));
}
else if (!ContainingType.IsInterfaceType() && _lazyReturnType.IsStatic)
{
// '{0}': static types cannot be used as return types
diagnostics.Add(ErrorCode.ERR_ReturnTypeIsStaticClass, location, _lazyReturnType);
}
else if (IsAbstract && IsExtern)
{
diagnostics.Add(ErrorCode.ERR_AbstractAndExtern, location, this);
}
else if (IsAbstract && IsSealed)
{
diagnostics.Add(ErrorCode.ERR_AbstractAndSealed, location, this);
}
else if (IsAbstract && IsVirtual)
{
diagnostics.Add(ErrorCode.ERR_AbstractNotVirtual, location, this);
}
else if (IsAbstract && ContainingType.TypeKind == TypeKind.Struct)
{
// The modifier '{0}' is not valid for this item
diagnostics.Add(ErrorCode.ERR_BadMemberFlag, location, SyntaxFacts.GetText(SyntaxKind.AbstractKeyword));
}
else if (IsVirtual && ContainingType.TypeKind == TypeKind.Struct)
{
// The modifier '{0}' is not valid for this item
diagnostics.Add(ErrorCode.ERR_BadMemberFlag, location, SyntaxFacts.GetText(SyntaxKind.VirtualKeyword));
}
else if (IsAbstract && !ContainingType.IsAbstract && (ContainingType.TypeKind == TypeKind.Class || ContainingType.TypeKind == TypeKind.Submission))
{
// '{0}' is abstract but it is contained in non-abstract class '{1}'
diagnostics.Add(ErrorCode.ERR_AbstractInConcreteClass, location, this, ContainingType);
}
else if (IsVirtual && ContainingType.IsSealed)
{
// '{0}' is a new virtual member in sealed class '{1}'
diagnostics.Add(ErrorCode.ERR_NewVirtualInSealed, location, this, ContainingType);
}
else if (bodySyntaxReferenceOpt == null && IsAsync)
{
diagnostics.Add(ErrorCode.ERR_BadAsyncLacksBody, location);
}
else if (bodySyntaxReferenceOpt == null && !IsExtern && !IsAbstract && !IsPartial && !IsExpressionBodied)
{
diagnostics.Add(ErrorCode.ERR_ConcreteMissingBody, location, this);
}
else if (ContainingType.IsSealed && this.DeclaredAccessibility.HasProtected() && !this.IsOverride)
{
diagnostics.Add(AccessCheck.GetProtectedMemberInSealedTypeError(ContainingType), location, this);
}
else if (ContainingType.IsStatic && !IsStatic)
{
diagnostics.Add(ErrorCode.ERR_InstanceMemberInStaticClass, location, Name);
}
else if (_lazyIsVararg && (IsGenericMethod || ContainingType.IsGenericType || _lazyParameters.Length > 0 && _lazyParameters[_lazyParameters.Length - 1].IsParams))
{
diagnostics.Add(ErrorCode.ERR_BadVarargs, location);
}
else if (_lazyIsVararg && IsAsync)
{
diagnostics.Add(ErrorCode.ERR_VarargsAsync, location);
}
}
private void CheckModifiers(bool isExplicitInterfaceImplementation, bool isVararg, bool hasBody, Location location, DiagnosticBag diagnostics)
{
bool isExplicitInterfaceImplementationInInterface = isExplicitInterfaceImplementation && ContainingType.IsInterface;
if (IsPartial && HasExplicitAccessModifier)
{
Binder.CheckFeatureAvailability(SyntaxNode, MessageID.IDS_FeatureExtendedPartialMethods, diagnostics, location);
}
if (IsPartial && IsAbstract)
{
diagnostics.Add(ErrorCode.ERR_PartialMethodInvalidModifier, location);
}
else if (IsPartial && !HasExplicitAccessModifier && !ReturnsVoid)
{
diagnostics.Add(ErrorCode.ERR_PartialMethodWithNonVoidReturnMustHaveAccessMods, location, this);
}
else if (IsPartial && !HasExplicitAccessModifier && HasExtendedPartialModifier)
{
diagnostics.Add(ErrorCode.ERR_PartialMethodWithExtendedModMustHaveAccessMods, location, this);
}
else if (IsPartial && !HasExplicitAccessModifier && Parameters.Any(p => p.RefKind == RefKind.Out))
{
diagnostics.Add(ErrorCode.ERR_PartialMethodWithOutParamMustHaveAccessMods, location, this);
}
else if (this.DeclaredAccessibility == Accessibility.Private && (IsVirtual || (IsAbstract && !isExplicitInterfaceImplementationInInterface) || IsOverride))
{
diagnostics.Add(ErrorCode.ERR_VirtualPrivate, location, this);
}
else if (IsStatic && (IsOverride || IsVirtual || IsAbstract))
{
// A static member '{0}' cannot be marked as override, virtual, or abstract
diagnostics.Add(ErrorCode.ERR_StaticNotVirtual, location, this);
}
else if (IsOverride && (IsNew || IsVirtual))
{
// A member '{0}' marked as override cannot be marked as new or virtual
diagnostics.Add(ErrorCode.ERR_OverrideNotNew, location, this);
}
else if (IsSealed && !IsOverride && !(isExplicitInterfaceImplementationInInterface && IsAbstract))
{
// '{0}' cannot be sealed because it is not an override
diagnostics.Add(ErrorCode.ERR_SealedNonOverride, location, this);
}
else if (IsSealed && ContainingType.TypeKind == TypeKind.Struct)
{
// The modifier '{0}' is not valid for this item
diagnostics.Add(ErrorCode.ERR_BadMemberFlag, location, SyntaxFacts.GetText(SyntaxKind.SealedKeyword));
}
else if (!ContainingType.IsInterfaceType() && _lazyReturnType.IsStatic)
{
// '{0}': static types cannot be used as return types
diagnostics.Add(ErrorCode.ERR_ReturnTypeIsStaticClass, location, _lazyReturnType.Type);
}
else if (IsAbstract && IsExtern)
{
diagnostics.Add(ErrorCode.ERR_AbstractAndExtern, location, this);
}
else if (IsAbstract && IsSealed && !isExplicitInterfaceImplementationInInterface)
{
diagnostics.Add(ErrorCode.ERR_AbstractAndSealed, location, this);
}
else if (IsAbstract && IsVirtual)
{
diagnostics.Add(ErrorCode.ERR_AbstractNotVirtual, location, this.Kind.Localize(), this);
}
else if (IsAbstract && ContainingType.TypeKind == TypeKind.Struct)
{
// The modifier '{0}' is not valid for this item
diagnostics.Add(ErrorCode.ERR_BadMemberFlag, location, SyntaxFacts.GetText(SyntaxKind.AbstractKeyword));
}
else if (IsVirtual && ContainingType.TypeKind == TypeKind.Struct)
{
// The modifier '{0}' is not valid for this item
diagnostics.Add(ErrorCode.ERR_BadMemberFlag, location, SyntaxFacts.GetText(SyntaxKind.VirtualKeyword));
}
else if (IsStatic && IsDeclaredReadOnly)
{
// Static member '{0}' cannot be marked 'readonly'.
diagnostics.Add(ErrorCode.ERR_StaticMemberCantBeReadOnly, location, this);
}
else if (IsAbstract && !ContainingType.IsAbstract && (ContainingType.TypeKind == TypeKind.Class || ContainingType.TypeKind == TypeKind.Submission))
{
// '{0}' is abstract but it is contained in non-abstract class '{1}'
diagnostics.Add(ErrorCode.ERR_AbstractInConcreteClass, location, this, ContainingType);
}
else if (IsVirtual && ContainingType.IsSealed)
{
// '{0}' is a new virtual member in sealed class '{1}'
diagnostics.Add(ErrorCode.ERR_NewVirtualInSealed, location, this, ContainingType);
}
else if (!hasBody && IsAsync)
{
diagnostics.Add(ErrorCode.ERR_BadAsyncLacksBody, location);
}
else if (!hasBody && !IsExtern && !IsAbstract && !IsPartial && !IsExpressionBodied)
{
diagnostics.Add(ErrorCode.ERR_ConcreteMissingBody, location, this);
}
else if (ContainingType.IsSealed && this.DeclaredAccessibility.HasProtected() && !this.IsOverride)
{
diagnostics.Add(AccessCheck.GetProtectedMemberInSealedTypeError(ContainingType), location, this);
}
else if (ContainingType.IsStatic && !IsStatic)
{
diagnostics.Add(ErrorCode.ERR_InstanceMemberInStaticClass, location, Name);
}
else if (isVararg && (IsGenericMethod || ContainingType.IsGenericType || _lazyParameters.Length > 0 && _lazyParameters[_lazyParameters.Length - 1].IsParams))
{
diagnostics.Add(ErrorCode.ERR_BadVarargs, location);
}
else if (isVararg && IsAsync)
{
diagnostics.Add(ErrorCode.ERR_VarargsAsync, location);
}
}
private void CheckModifiers(Location location, DiagnosticBag diagnostics)
{
if (IsPartial && !ReturnsVoid)
{
diagnostics.Add(ErrorCode.ERR_PartialMethodMustReturnVoid, location);
}
else if (IsPartial && !ContainingType.IsInterface && 0 != (DeclarationModifiers &
(CSharp.DeclarationModifiers.AccessibilityMask & ~CSharp.DeclarationModifiers.Private |
CSharp.DeclarationModifiers.Virtual |
CSharp.DeclarationModifiers.Abstract |
CSharp.DeclarationModifiers.Override |
CSharp.DeclarationModifiers.New |
CSharp.DeclarationModifiers.Sealed |
CSharp.DeclarationModifiers.Extern)))
{
diagnostics.Add(ErrorCode.ERR_PartialMethodInvalidModifier, location);
}
else if (this.DeclaredAccessibility == Accessibility.Private && (IsVirtual || IsAbstract || IsOverride))
{
diagnostics.Add(ErrorCode.ERR_VirtualPrivate, location, this);
}
else if (IsStatic && (IsOverride || IsVirtual || IsAbstract))
{
// A static member '{0}' cannot be marked as override, virtual, or abstract
diagnostics.Add(ErrorCode.ERR_StaticNotVirtual, location, this);
}
else if (IsOverride && (IsNew || IsVirtual))
{
// A member '{0}' marked as override cannot be marked as new or virtual
diagnostics.Add(ErrorCode.ERR_OverrideNotNew, location, this);
}
else if (IsSealed && !IsOverride)
{
// '{0}' cannot be sealed because it is not an override
diagnostics.Add(ErrorCode.ERR_SealedNonOverride, location, this);
}
else if (!ContainingType.IsInterfaceType() && this.lazyReturnType.IsStatic)
{
// '{0}': static types cannot be used as return types
diagnostics.Add(ErrorCode.ERR_ReturnTypeIsStaticClass, location, this.lazyReturnType);
}
else if (IsAbstract && IsExtern)
{
diagnostics.Add(ErrorCode.ERR_AbstractAndExtern, location, this);
}
else if (IsAbstract && IsSealed)
{
diagnostics.Add(ErrorCode.ERR_AbstractAndSealed, location, this);
}
else if (IsAbstract && IsVirtual)
{
diagnostics.Add(ErrorCode.ERR_AbstractNotVirtual, location, this);
}
else if (IsAbstract && !ContainingType.IsAbstract && ContainingType.TypeKind == TypeKind.Class)
{
// '{0}' is abstract but it is contained in non-abstract class '{1}'
diagnostics.Add(ErrorCode.ERR_AbstractInConcreteClass, location, this, ContainingType);
}
else if (IsVirtual && ContainingType.IsSealed)
{
// '{0}' is a new virtual member in sealed class '{1}'
diagnostics.Add(ErrorCode.ERR_NewVirtualInSealed, location, this, ContainingType);
}
else if (blockSyntaxReference == null && IsAsync)
{
diagnostics.Add(ErrorCode.ERR_BadAsyncLacksBody, location);
}
else if (blockSyntaxReference == null && !IsExtern && !IsAbstract && !IsPartial)
{
diagnostics.Add(ErrorCode.ERR_ConcreteMissingBody, location, this);
}
else if (
ContainingType.IsSealed &&
(this.DeclaredAccessibility == Accessibility.Protected || this.DeclaredAccessibility == Accessibility.ProtectedOrInternal) &&
!this.IsOverride)
{
diagnostics.Add(AccessCheck.GetProtectedMemberInSealedTypeError(ContainingType), location, this);
}
else if (ContainingType.IsStatic && !IsStatic)
{
diagnostics.Add(ErrorCode.ERR_InstanceMemberInStaticClass, location, Name);
}
else if (this.lazyIsVararg && (IsGenericMethod || ContainingType.IsGenericType || this.lazyParameters.Length > 0 && this.lazyParameters[this.lazyParameters.Length - 1].IsParams))
{
diagnostics.Add(ErrorCode.ERR_BadVarargs, location);
}
else if (this.lazyIsVararg && IsAsync)
{
diagnostics.Add(ErrorCode.ERR_VarargsAsync, location);
}
}