public void Parse_AShortExpression_ValidateResult()
{
var input = "(13+4)-(12+1)";
var tokens = CustomInterpreter.Lex(input);
var parsed = CustomInterpreter.Parse(tokens);
Assert.That(parsed.Value, Is.EqualTo(4));
}
public static async Task MethodsAsHandlers()
{
using var interpreter = new CustomInterpreter();
var entry1 = interpreter.CreateLogEntry(new BinaryOperationCommand {
X = 40, Y = 2, Type = BinaryOperation.Add
}, 1L);
Equal(1L, entry1.Term);
Equal(0, interpreter.Value);
Equal(0, await interpreter.InterpretAsync(entry1));
Equal(42, interpreter.Value);
var entry2 = interpreter.CreateLogEntry(new UnaryOperationCommand {
X = 42, Type = UnaryOperation.Negate
}, 10L);
Equal(10L, entry2.Term);
Equal(1, await interpreter.InterpretAsync(entry2));
Equal(-42, interpreter.Value);
}
public static async Task DelegatesAsHandlers()
{
var state = new StrongBox <int>();
Func <BinaryOperationCommand, CancellationToken, ValueTask> binaryOp = (command, token) => CustomInterpreter.DoBinaryOperation(ref state.Value, command, token);
Func <UnaryOperationCommand, CancellationToken, ValueTask> unaryOp = (command, token) => CustomInterpreter.DoUnaryOperation(ref state.Value, command, token);
Func <AssignCommand, CancellationToken, ValueTask> assignOp = (command, token) =>
{
state.Value = command.Value;
return(new ValueTask());
};
var interpreter = new CommandInterpreter.Builder()
.Add(binaryOp)
.Add(unaryOp)
.Add(assignOp, new Formatter())
.Build();
var entry1 = interpreter.CreateLogEntry(new BinaryOperationCommand {
X = 40, Y = 2, Type = BinaryOperation.Add
}, 1L);
Equal(1L, entry1.Term);
Equal(0, state.Value);
Equal(0, await interpreter.InterpretAsync(entry1));
Equal(42, state.Value);
var entry2 = interpreter.CreateLogEntry(new UnaryOperationCommand {
X = 42, Type = UnaryOperation.Negate
}, 10L);
Equal(10L, entry2.Term);
Equal(1, await interpreter.InterpretAsync(entry2));
Equal(-42, state.Value);
var entry3 = interpreter.CreateLogEntry(new AssignCommand {
Value = int.MaxValue
}, 68L);
Equal(68L, entry3.Term);
Equal(3, await interpreter.InterpretAsync(entry3));
Equal(int.MaxValue, state.Value);
}
public TestPersistenceState()
: base(Path.Combine(Path.GetTempPath(), Path.GetRandomFileName()), 4)
{
interpreter = new CustomInterpreter();
}
