public SingleTypeOrValueTuple Build(string?mockMemberName = null)
{
mockMemberName ??= string.Empty;
int count = Items.Count;
SingleTypeOrValueTuple.Entry[] entries = new SingleTypeOrValueTuple.Entry[Items.Count];
if (count > 0)
{
if (count > 1)
{
var uniquifier = new Uniquifier(new[] { mockMemberName });
for (int i = 0; i < count; i++)
{
var item = Items[i];
string name = item.OriginalName;
name = name == mockMemberName ? name + "_" : name;
if (IsNameValidForPosition(name, i))
{
entries[i] = new SingleTypeOrValueTuple.Entry(
item.OriginalName,
item.Type,
item.IsReturnValue,
uniquifier.GetUniqueName(name));
}
}
for (int i = 0; i < count; i++)
{
var item = Items[i];
string name = item.OriginalName;
name = name == mockMemberName ? name + "_" : name;
if (!IsNameValidForPosition(name, i))
{
entries[i] = new SingleTypeOrValueTuple.Entry(
item.OriginalName,
item.Type,
item.IsReturnValue,
uniquifier.GetUniqueName(name + "_"));
}
}
}
else
{
var item = Items[0];
string name = item.OriginalName;
name = name == mockMemberName ? name + "_" : name;
entries[0] = new SingleTypeOrValueTuple.Entry(item.OriginalName, item.Type, item.IsReturnValue, name);
}
}
return(new SingleTypeOrValueTuple(entries));
}
private static string?FindArglistParameterName(IMethodSymbol symbol)
{
if (symbol.IsVararg)
{
var uniquifier = new Uniquifier(symbol.Parameters.Select(a => a.Name));
return(uniquifier.GetUniqueName("arglist"));
}
return(null);
}
private MemberDeclarationSyntax MockSetVirtualMethod()
{
var uniquifier = new Uniquifier(Symbol.Parameters.Select(p => p.Name));
var parameterList = F.SeparatedList(Symbol.Parameters.Select(a =>
F.Parameter(F.Identifier(a.Name)).WithType(TypesForSymbols.ParseTypeName(a.Type, a.NullableOrOblivious()))))
.Add(F.Parameter(F.Identifier(uniquifier.GetUniqueName("value"))).WithType(ValueTypeSyntax));
return(F.MethodDeclaration(F.PredefinedType(F.Token(SyntaxKind.VoidKeyword)), F.Identifier(MemberMockName))
.WithModifiers(F.TokenList(F.Token(SyntaxKind.ProtectedKeyword), F.Token(SyntaxKind.VirtualKeyword)))
.WithParameterList(F.ParameterList(parameterList))
.WithBody(F.Block(ThrowMockMissingStatement("VirtualIndexerSet"))));
}
private MocklisTypesForSymbols(SemanticModel semanticModel, ClassDeclarationSyntax classDeclaration, MocklisSymbols mocklisSymbols,
INamedTypeSymbol classSymbol, IMethodSymbol methodSymbol, bool nullableContextEnabled)
{
_semanticModel = semanticModel;
_classDeclaration = classDeclaration;
_mocklisSymbols = mocklisSymbols;
_typeParameterNameSubstitutions = new Dictionary <string, string>();
_nullableContextEnabled = nullableContextEnabled;
Uniquifier t = new Uniquifier(classSymbol.TypeParameters.Select(tp => tp.Name));
foreach (var methodTypeParameter in methodSymbol.TypeParameters)
{
string uniqueName = t.GetUniqueName(methodTypeParameter.Name);
_typeParameterNameSubstitutions[methodTypeParameter.Name] = uniqueName;
}
}
protected MemberDeclarationSyntax ExplicitInterfaceMember()
{
var baseReturnType = Symbol.ReturnsVoid
? F.PredefinedType(F.Token(SyntaxKind.VoidKeyword))
: TypesForSymbols.ParseTypeName(Symbol.ReturnType, Symbol.ReturnTypeIsNullableOrOblivious());
var returnType = baseReturnType;
if (Symbol.ReturnsByRef)
{
returnType = F.RefType(returnType);
}
else if (Symbol.ReturnsByRefReadonly)
{
returnType = F.RefType(returnType).WithReadOnlyKeyword(F.Token(SyntaxKind.ReadOnlyKeyword));
}
var mockedMethod = ExplicitInterfaceMemberMethodDeclaration(returnType);
var memberMockInstance = ExplicitInterfaceMemberMemberMockInstance();
ExpressionSyntax invocation = F.InvocationExpression(
F.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression,
memberMockInstance, F.IdentifierName("Call")))
.WithExpressionsAsArgumentList(ParametersType.BuildArgumentListWithOriginalNames());
// look at the return parameters. If we don't have any we can just make the call.
// if we only have one and that's the return value, we can just return it.
if (ReturnValuesType.Count == 0 ||
ReturnValuesType.Count == 1 && ReturnValuesType[0].IsReturnValue)
{
if (Symbol.ReturnsByRef || Symbol.ReturnsByRefReadonly)
{
invocation = TypesForSymbols.WrapByRef(invocation, baseReturnType);
}
mockedMethod = mockedMethod.WithExpressionBody(F.ArrowExpressionClause(invocation))
.WithSemicolonToken(F.Token(SyntaxKind.SemicolonToken));
}
// if we only have one and that's not a return value, we can just assign it to the out or ref parameter it corresponds to.
else if (ReturnValuesType.Count == 1)
{
mockedMethod = mockedMethod.WithBody(F.Block(F.ExpressionStatement(F.AssignmentExpression(SyntaxKind.SimpleAssignmentExpression,
F.IdentifierName(ReturnValuesType[0].OriginalName), invocation))));
}
else
{
// if we have more than one, put it in a temporary variable. (consider name clashes with method parameter names)
var x = new Uniquifier(Symbol.Parameters.Select(m => m.Name));
string tmp = x.GetUniqueName("tmp");
var statements = new List <StatementSyntax>
{
F.LocalDeclarationStatement(F.VariableDeclaration(F.IdentifierName("var")).WithVariables(
F.SingletonSeparatedList(F.VariableDeclarator(F.Identifier(tmp)).WithInitializer(F.EqualsValueClause(invocation)))))
};
// then for any out or ref parameters, set their values from the temporary variable.
foreach (var rv in ReturnValuesType.Where(a => !a.IsReturnValue))
{
statements.Add(F.ExpressionStatement(F.AssignmentExpression(SyntaxKind.SimpleAssignmentExpression,
F.IdentifierName(rv.OriginalName),
F.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, F.IdentifierName(tmp),
F.IdentifierName(rv.TupleSafeName)))));
}
// finally, if there is a 'proper' return type, return the corresponding value from the temporary variable.
foreach (var rv in ReturnValuesType.Where(a => a.IsReturnValue))
{
ExpressionSyntax memberAccess = F.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, F.IdentifierName(tmp),
F.IdentifierName(rv.TupleSafeName));
if (Symbol.ReturnsByRef || Symbol.ReturnsByRefReadonly)
{
memberAccess = TypesForSymbols.WrapByRef(memberAccess, baseReturnType);
}
statements.Add(F.ReturnStatement(memberAccess));
}
mockedMethod = mockedMethod.WithBody(F.Block(statements));
}
return(mockedMethod);
}