public void TestTake()
{
var zero = IndexedTypeParameterSymbol.TakeSymbols(0);
Assert.Equal(0, zero.Length);
var five = IndexedTypeParameterSymbol.TakeSymbols(5);
Assert.Equal(5, five.Length);
Assert.Equal(five[0], IndexedTypeParameterSymbol.GetTypeParameter(0));
Assert.Equal(five[1], IndexedTypeParameterSymbol.GetTypeParameter(1));
Assert.Equal(five[2], IndexedTypeParameterSymbol.GetTypeParameter(2));
Assert.Equal(five[3], IndexedTypeParameterSymbol.GetTypeParameter(3));
Assert.Equal(five[4], IndexedTypeParameterSymbol.GetTypeParameter(4));
var fifty = IndexedTypeParameterSymbol.TakeSymbols(50);
Assert.Equal(50, fifty.Length);
// prove they are all unique
var set = new HashSet <TypeParameterSymbol>(fifty);
Assert.Equal(50, set.Count);
var fiveHundred = IndexedTypeParameterSymbol.TakeSymbols(500);
Assert.Equal(500, fiveHundred.Length);
}
/// <summary>
/// Given a list of method and/or property candidates, choose the first one (if any) with a signature
/// that matches the parameter list in the cref. Return null if there isn't one.
/// </summary>
/// <remarks>
/// Produces a diagnostic for ambiguous matches, but not for unresolved members - WRN_BadXMLRef is
/// handled in BindMemberCref.
/// </remarks>
private static ImmutableArray <Symbol> PerformCrefOverloadResolution(ArrayBuilder <Symbol> candidates, ImmutableArray <ParameterSymbol> parameterSymbols, int arity, MemberCrefSyntax memberSyntax, out Symbol?ambiguityWinner, BindingDiagnosticBag diagnostics)
{
ArrayBuilder <Symbol>?viable = null;
foreach (Symbol candidate in candidates)
{
// BREAK: In dev11, any candidate with the type "dynamic" anywhere in its parameter list would be skipped
// (see XmlDocCommentBinder::bindXmlReference). Apparently, this was because "the params that the xml doc
// comments produce never will." This does not appear to have made sense in dev11 (skipping dropping the
// candidate doesn't cause anything to blow up and may cause resolution to start succeeding) and it almost
// certainly does not in roslyn (the signature comparer ignores the object-dynamic distinction anyway).
Symbol signatureMember;
switch (candidate.Kind)
{
case SymbolKind.Method:
{
MethodSymbol candidateMethod = (MethodSymbol)candidate;
MethodKind candidateMethodKind = candidateMethod.MethodKind;
bool candidateMethodIsVararg = candidateMethod.IsVararg;
// If the arity from the cref is zero, then we accept methods of any arity.
int signatureMemberArity = candidateMethodKind == MethodKind.Constructor
? 0
: (arity == 0 ? candidateMethod.Arity : arity);
// CONSIDER: we might want to reuse this method symbol (as long as the MethodKind and Vararg-ness match).
signatureMember = new SignatureOnlyMethodSymbol(
methodKind: candidateMethodKind,
typeParameters: IndexedTypeParameterSymbol.TakeSymbols(signatureMemberArity),
parameters: parameterSymbols,
// This specific comparer only looks for varargs.
callingConvention: candidateMethodIsVararg ? Microsoft.Cci.CallingConvention.ExtraArguments : Microsoft.Cci.CallingConvention.HasThis,
// These are ignored by this specific MemberSignatureComparer.
containingType: null,
name: null,
refKind: RefKind.None,
isInitOnly: false,
isStatic: false,
returnType: default,
refCustomModifiers: ImmutableArray <CustomModifier> .Empty,
explicitInterfaceImplementations: ImmutableArray <MethodSymbol> .Empty);
break;
}