private BoundExpression GenerateDisposeCall(SyntaxNode syntax, BoundExpression disposedExpression, MethodSymbol methodOpt, AwaitableInfo awaitOpt, SyntaxToken awaitKeyword)
{
Debug.Assert(awaitOpt is null || awaitKeyword != default);
// If we don't have an explicit dispose method, try and get the special member for IDiposable/IAsyncDisposable
if (methodOpt is null)
{
if (awaitOpt is null)
{
// IDisposable.Dispose()
Binder.TryGetSpecialTypeMember(_compilation, SpecialMember.System_IDisposable__Dispose, syntax, _diagnostics, out methodOpt);
}
else
{
// IAsyncDisposable.DisposeAsync()
TryGetWellKnownTypeMember(syntax: null, WellKnownMember.System_IAsyncDisposable__DisposeAsync, out methodOpt, location: awaitKeyword.GetLocation());
}
}
BoundExpression disposeCall;
if (methodOpt is null)
{
disposeCall = new BoundBadExpression(syntax, LookupResultKind.NotInvocable, ImmutableArray <Symbol> .Empty, ImmutableArray.Create(disposedExpression), ErrorTypeSymbol.UnknownResultType);
}
else
{
var receiver = methodOpt.IsExtensionMethod
? null
: disposedExpression;
var args = methodOpt.IsExtensionMethod
? ImmutableArray.Create(disposedExpression)
: ImmutableArray <BoundExpression> .Empty;
var refs = methodOpt.IsExtensionMethod && !methodOpt.ParameterRefKinds.IsDefaultOrEmpty
? ImmutableArray.Create(methodOpt.ParameterRefKinds[0])
: default;
disposeCall = MakeCall(syntax: syntax,
rewrittenReceiver: receiver,
method: methodOpt,
rewrittenArguments: args,
argumentRefKindsOpt: refs,
expanded: methodOpt.HasParamsParameter(),
invokedAsExtensionMethod: methodOpt.IsExtensionMethod,
argsToParamsOpt: default,
/// <summary>
/// Synthesize a call `expression.Method()`, but with some extra smarts to handle extension methods, and to fill-in optional and params parameters.
/// </summary>
private BoundExpression MakeCallWithNoExplicitArgument(SyntaxNode syntax, BoundExpression expression, MethodSymbol method)
{
var receiver = method.IsExtensionMethod ? null : expression;
var args = method.IsExtensionMethod
? ImmutableArray.Create(expression)
: ImmutableArray <BoundExpression> .Empty;
var refKinds = method.IsExtensionMethod && !method.ParameterRefKinds.IsDefaultOrEmpty
? ImmutableArray.Create(method.ParameterRefKinds[0])
: default;
BoundExpression disposeCall = MakeCall(syntax: syntax,
rewrittenReceiver: receiver,
method: method,
rewrittenArguments: args,
argumentRefKindsOpt: refKinds,
expanded: method.HasParamsParameter(),
invokedAsExtensionMethod: method.IsExtensionMethod,
argsToParamsOpt: default,