public IInterpreter MinLimitVariadicFunctionWithSpread() { var interpreter = new Interpreter.Interpreter(); foreach (var mutability in Options.AllMutabilityModes) { var env = Language.Environment.Create(new Options() { AllowInvalidMainResult = true, DebugThrowOnError = true }.SetMutability(mutability)); var root_ns = env.Root; root_ns.AddBuilder(FunctionBuilder.Create( "sum", ExpressionReadMode.ReadRequired, NameFactory.Int64NameReference(), Block.CreateStatement(new IExpression[] { // let i0 = n.at(0) VariableDeclaration.CreateStatement("i0", null, FunctionCall.Create(NameReference.Create("n", NameFactory.PropertyIndexerName), FunctionArgument.Create(NatLiteral.Create("0")))), // let i1 = n.at(1) VariableDeclaration.CreateStatement("i1", null, FunctionCall.Create(NameReference.Create("n", NameFactory.PropertyIndexerName), FunctionArgument.Create(NatLiteral.Create("1")))), // return i0+i1 Return.Create(ExpressionFactory.Add("i0", "i1")) })) .Parameters(FunctionParameter.Create("n", NameFactory.Int64NameReference(), Variadic.Create(2), null, isNameRequired: false))); var main_func = root_ns.AddBuilder(FunctionBuilder.Create( "main", ExpressionReadMode.OptionalUse, NameFactory.Int64NameReference(), Block.CreateStatement(new IExpression[] { VariableDeclaration.CreateStatement("x", null, ExpressionFactory.HeapConstructor(NameFactory.ChunkNameReference(NameFactory.Int64NameReference()), FunctionArgument.Create(NatLiteral.Create("2"))), env.Options.ReassignableModifier()), Assignment.CreateStatement(FunctionCall.Indexer(NameReference.Create("x"), FunctionArgument.Create(NatLiteral.Create("0"))), Int64Literal.Create("-6")), Assignment.CreateStatement(FunctionCall.Indexer(NameReference.Create("x"), FunctionArgument.Create(NatLiteral.Create("1"))), Int64Literal.Create("8")), Return.Create(FunctionCall.Create(NameReference.Create("sum"), FunctionArgument.Create(Spread.Create(NameReference.Create("x"))))) }))); ExecValue result = interpreter.TestRun(env); Assert.AreEqual(2L, result.RetValue.PlainValue); } return(interpreter); }