private void ComputeParameters()
{
if (_lazyParametersAndDiagnostics != null)
{
return;
}
var diagnostics = DiagnosticBag.GetInstance();
SyntaxToken arglistToken;
var parameters = ParameterHelpers.MakeParameters(_binder, this, _syntax.ParameterList, true, out arglistToken, diagnostics, true);
var isVararg = (arglistToken.Kind() == SyntaxKind.ArgListKeyword);
if (IsAsync && diagnostics.IsEmptyWithoutResolution)
{
SourceMemberMethodSymbol.ReportAsyncParameterErrors(parameters, diagnostics, this.Locations[0]);
}
var value = new ParametersAndDiagnostics(parameters, isVararg, diagnostics.ToReadOnlyAndFree());
Interlocked.CompareExchange(ref _lazyParametersAndDiagnostics, value, null);
}
/// <summary>
/// Returns true if the two partial methods have the same constraints.
/// </summary>
private static bool HaveSameConstraints(SourceMemberMethodSymbol part1, SourceMemberMethodSymbol part2)
{
Debug.Assert(!ReferenceEquals(part1, part2));
Debug.Assert(part1.Arity == part2.Arity);
var typeParameters1 = part1.TypeParameters;
int arity = typeParameters1.Length;
if (arity == 0)
{
return(true);
}
var typeParameters2 = part2.TypeParameters;
var indexedTypeParameters = IndexedTypeParameterSymbol.Take(arity);
var typeMap1 = new TypeMap(typeParameters1, indexedTypeParameters, allowAlpha: true);
var typeMap2 = new TypeMap(typeParameters2, indexedTypeParameters, allowAlpha: true);
return(MemberSignatureComparer.HaveSameConstraints(typeParameters1, typeMap1, typeParameters2, typeMap2));
}
/// <summary>
/// Returns true if the method is a constructor and has a this() constructor initializer.
/// </summary>
internal static bool HasThisConstructorInitializer(this MethodSymbol method)
{
if ((object)method != null && method.MethodKind == MethodKind.Constructor)
{
SourceMemberMethodSymbol sourceMethod = method as SourceMemberMethodSymbol;
if ((object)sourceMethod != null)
{
ConstructorDeclarationSyntax constructorSyntax = sourceMethod.SyntaxNode as ConstructorDeclarationSyntax;
if (constructorSyntax != null)
{
ConstructorInitializerSyntax initializerSyntax = constructorSyntax.Initializer;
if (initializerSyntax != null)
{
return(initializerSyntax.Kind() == SyntaxKind.ThisConstructorInitializer);
}
}
}
}
return(false);
}
public override ImmutableArray <Symbol> GetMembers()
{
// @t-mawind
// Not making this lazy results in new symbols being created every
// time we call GetMembers(), which is not only inefficient but
// breaks reference equality.
if (_members.IsDefault)
{
var mb = ArrayBuilder <Symbol> .GetInstance();
mb.AddRange(base.GetMembers());
// @t-mawind
// This is slightly wrong, but we don't have any syntax to
// cling onto apart from this...
var binder = DeclaringCompilation.GetBinder(ContainingType.GetNonNullSyntaxNode());
var diagnostics = DiagnosticBag.GetInstance();
var memberSyntax = _concept.GetConceptDefaultMethods();
foreach (var m in memberSyntax)
{
var ms = m.GetSyntax() as MethodDeclarationSyntax;
if (ms == null)
{
continue;
}
mb.Add(SourceMemberMethodSymbol.CreateMethodSymbol(this, binder, ms, diagnostics));
}
AddDeclarationDiagnostics(diagnostics);
ImmutableInterlocked.InterlockedInitialize(ref _members, mb.ToImmutableAndFree());
}
return(_members);
}
public ExplicitInterfaceMethodTypeParameterMap(SourceMemberMethodSymbol implementationMethod)
: base(implementationMethod)
{
Debug.Assert(implementationMethod.IsExplicitInterfaceImplementation);
}
protected override MethodSymbol GetOverriddenMethod(SourceMemberMethodSymbol overridingMethod)
{
MethodSymbol method = overridingMethod;
Debug.Assert(method.IsOverride);
do
{
method = method.OverriddenMethod;
} while (((object)method != null) && method.IsOverride);
// OverriddenMethod may be null in error situations.
return method;
}
public OverriddenMethodTypeParameterMap(SourceMemberMethodSymbol overridingMethod)
: base(overridingMethod)
{
Debug.Assert(overridingMethod.IsOverride);
}
protected abstract MethodSymbol GetOverriddenMethod(SourceMemberMethodSymbol overridingMethod);
public SourceMethodTypeParameterSymbol(SourceMemberMethodSymbol owner, string name, int ordinal, ImmutableArray<Location> locations, ImmutableArray<SyntaxReference> syntaxRefs)
: base(name, ordinal, locations, syntaxRefs)
{
this.owner = owner;
}
/// <summary>
/// Returns true if the two partial methods have the same constraints.
/// </summary>
private static bool HaveSameConstraints(SourceMemberMethodSymbol part1, SourceMemberMethodSymbol part2)
{
Debug.Assert(!ReferenceEquals(part1, part2));
Debug.Assert(part1.Arity == part2.Arity);
var typeParameters1 = part1.TypeParameters;
int arity = typeParameters1.Length;
if (arity == 0)
{
return true;
}
var typeParameters2 = part2.TypeParameters;
var indexedTypeParameters = IndexedTypeParameterSymbol.Take(arity);
var typeMap1 = new TypeMap(typeParameters1, indexedTypeParameters, allowAlpha: true);
var typeMap2 = new TypeMap(typeParameters2, indexedTypeParameters, allowAlpha: true);
return MemberSignatureComparer.HaveSameConstraints(typeParameters1, typeMap1, typeParameters2, typeMap2);
}
public OverriddenMethodTypeParameterMap(SourceMemberMethodSymbol overridingMethod)
: base(overridingMethod)
{
Debug.Assert(overridingMethod.IsOverride);
}
protected abstract MethodSymbol GetOverriddenMethod(SourceMemberMethodSymbol overridingMethod);
protected OverriddenMethodTypeParameterMapBase(SourceMemberMethodSymbol overridingMethod)
{
_overridingMethod = overridingMethod;
}
public SourceMethodTypeParameterSymbol(SourceMemberMethodSymbol owner, string name, int ordinal, ImmutableArray <Location> locations, ImmutableArray <SyntaxReference> syntaxRefs)
: base(name, ordinal, locations, syntaxRefs)
{
_owner = owner;
}
protected override MethodSymbol GetOverriddenMethod(SourceMemberMethodSymbol overridingMethod)
{
var explicitImplementations = overridingMethod.ExplicitInterfaceImplementations;
Debug.Assert(explicitImplementations.Length <= 1);
// ExplicitInterfaceImplementations may be empty in error situations.
return (explicitImplementations.Length > 0) ? explicitImplementations[0] : null;
}
/// <summary>
/// Report differences between the defining and implementing
/// parts of a partial method. Diagnostics are reported on the
/// implementing part, matching Dev10 behavior.
/// </summary>
private static void PartialMethodChecks(SourceMemberMethodSymbol definition, SourceMemberMethodSymbol implementation, DiagnosticBag diagnostics)
{
Debug.Assert(!ReferenceEquals(definition, implementation));
if (definition.IsStatic != implementation.IsStatic)
{
diagnostics.Add(ErrorCode.ERR_PartialMethodStaticDifference, implementation.Locations[0]);
}
if (definition.IsExtensionMethod != implementation.IsExtensionMethod)
{
diagnostics.Add(ErrorCode.ERR_PartialMethodExtensionDifference, implementation.Locations[0]);
}
if (definition.IsUnsafe != implementation.IsUnsafe && definition.CompilationAllowsUnsafe()) // Don't cascade.
{
diagnostics.Add(ErrorCode.ERR_PartialMethodUnsafeDifference, implementation.Locations[0]);
}
if (definition.IsParams() != implementation.IsParams())
{
diagnostics.Add(ErrorCode.ERR_PartialMethodParamsDifference, implementation.Locations[0]);
}
if (!HaveSameConstraints(definition, implementation))
{
diagnostics.Add(ErrorCode.ERR_PartialMethodInconsistentConstraints, implementation.Locations[0], implementation);
}
}
public ExplicitInterfaceMethodTypeParameterMap(SourceMemberMethodSymbol implementationMethod)
: base(implementationMethod)
{
Debug.Assert(implementationMethod.IsExplicitInterfaceImplementation);
}
internal static void InitializePartialMethodParts(SourceMemberMethodSymbol definition, SourceMemberMethodSymbol implementation)
{
Debug.Assert(definition.IsPartialDefinition);
Debug.Assert(implementation.IsPartialImplementation);
Debug.Assert((object)definition._otherPartOfPartial == null);
Debug.Assert((object)implementation._otherPartOfPartial == null);
definition._otherPartOfPartial = implementation;
implementation._otherPartOfPartial = definition;
}
public SourceMethodTypeParameterSymbol(SourceMemberMethodSymbol owner, string name, int ordinal, NullabilityPreservationKind preservationKind, ImmutableArray<Location> locations, ImmutableArray<SyntaxReference> syntaxRefs)
: base(name, ordinal, preservationKind, locations, syntaxRefs)
{
_owner = owner;
}
internal static void InitializePartialMethodParts(SourceMemberMethodSymbol definition, SourceMemberMethodSymbol implementation)
{
Debug.Assert(definition.IsPartialDefinition);
Debug.Assert(implementation.IsPartialImplementation);
Debug.Assert((object)definition._otherPartOfPartial == null);
Debug.Assert((object)implementation._otherPartOfPartial == null);
definition._otherPartOfPartial = implementation;
implementation._otherPartOfPartial = definition;
}
protected OverriddenMethodTypeParameterMapBase(SourceMemberMethodSymbol overridingMethod)
{
_overridingMethod = overridingMethod;
}