private FunctionPointerTypeSymbol SubstituteFunctionPointerType(FunctionPointerTypeSymbol f)
{
var substitutedReturnType = f.Signature.ReturnTypeWithAnnotations.SubstituteType(this);
var refCustomModifiers = f.Signature.RefCustomModifiers;
var substitutedRefCustomModifiers = SubstituteCustomModifiers(refCustomModifiers);
var parameterTypesWithAnnotations = f.Signature.ParameterTypesWithAnnotations;
ImmutableArray <TypeWithAnnotations> substitutedParamTypes = SubstituteTypes(
parameterTypesWithAnnotations
);
ImmutableArray <ImmutableArray <CustomModifier> > substitutedParamModifiers = default;
var paramCount = f.Signature.Parameters.Length;
if (paramCount > 0)
{
var builder = ArrayBuilder <ImmutableArray <CustomModifier> > .GetInstance(paramCount);
bool didSubstitute = false;
foreach (var param in f.Signature.Parameters)
{
var substituted = SubstituteCustomModifiers(param.RefCustomModifiers);
builder.Add(substituted);
if (substituted != param.RefCustomModifiers)
{
didSubstitute = true;
}
}
if (didSubstitute)
{
substitutedParamModifiers = builder.ToImmutableAndFree();
}
else
{
builder.Free();
}
}
if (
substitutedParamTypes != parameterTypesWithAnnotations ||
!substitutedParamModifiers.IsDefault ||
!f.Signature.ReturnTypeWithAnnotations.IsSameAs(substitutedReturnType) ||
substitutedRefCustomModifiers != refCustomModifiers
)
{
f = f.SubstituteTypeSymbol(
substitutedReturnType,
substitutedParamTypes,
refCustomModifiers,
substitutedParamModifiers
);
}
return(f);
}
internal bool MethodEqualityChecks(
FunctionPointerParameterSymbol other,
TypeCompareKind compareKind
) =>
FunctionPointerTypeSymbol.RefKindEquals(compareKind, RefKind, other.RefKind) &&
(
(compareKind & TypeCompareKind.IgnoreCustomModifiersAndArraySizesAndLowerBounds)
!= 0 ||
RefCustomModifiers.SequenceEqual(other.RefCustomModifiers)
) &&
TypeWithAnnotations.Equals(other.TypeWithAnnotations, compareKind);
public static FunctionPointerMethodSymbol CreateFromSource(FunctionPointerTypeSyntax syntax, Binder typeBinder, DiagnosticBag diagnostics, ConsList <TypeSymbol> basesBeingResolved, bool suppressUseSiteDiagnostics)
{
var(callingConvention, conventionIsValid) = FunctionPointerTypeSymbol.GetCallingConvention(syntax.CallingConvention.Text);
if (!conventionIsValid)
{
// '{0}' is not a valid calling convention for a function pointer. Valid conventions are 'cdecl', 'managed', 'thiscall', and 'stdcall'.
diagnostics.Add(ErrorCode.ERR_InvalidFunctionPointerCallingConvention, syntax.CallingConvention.GetLocation(), syntax.CallingConvention.Text);
}
RefKind refKind = RefKind.None;
TypeWithAnnotations returnType;
var refReadonlyModifiers = ImmutableArray <CustomModifier> .Empty;
if (syntax.Parameters.Count == 0)
{
returnType = TypeWithAnnotations.Create(typeBinder.CreateErrorType());
}
else
{
var returnTypeParameter = syntax.Parameters[^ 1];
internal int MethodHashCode() => Hash.Combine(TypeWithAnnotations.GetHashCode(), FunctionPointerTypeSymbol.GetRefKindForHashCode(RefKind).GetHashCode());