public static void RegisterDefaultAliases(ExpressionParser parser)
{
parser.RegisterOperator("AND", 4, LogicalAndMatrix.Create(), ShortCircuitMode.LogicalAnd);
parser.RegisterOperator("OR", 4, LogicalOrMatrix.Create(), ShortCircuitMode.LogicalOr);
parser.RegisterOperator("LT", 4, LessThanMatrix.Create());
parser.RegisterOperator("LTE", 4, LessThanOrEqualMatrix.Create());
parser.RegisterOperator("GT", 4, GreaterThanMatrix.Create());
parser.RegisterOperator("GTE", 4, GreaterThanOrEqualMatrix.Create());
parser.RegisterOperator("BAND", 4, BitwiseAndMatrix.Create());
parser.RegisterOperator("BOR", 4, BitwiseOrMatrix.Create());
}
public void SimpleTestRegisteredAlphanumericOperators()
{
ExpressionParser parser = new ExpressionParser();
parser.RegisterOperator("AND", 4, LogicalAndMatrix.Create());
//parser.RegisterOperator("AND", 4, OperatorActions.DoLogicalAnd);
//parser.RegisterOperator("OR", 3, OperatorActions.DoLogicalOr);
//parser.RegisterOperator("LT", 9, OperatorActions.DoLessThan);
//parser.RegisterOperator("GT", 9, OperatorActions.DoGreaterThan);
//parser.RegisterOperator("LTE", 9, OperatorActions.DoLessOrEqual);
//parser.RegisterOperator("GTE", 9, OperatorActions.DoGreaterOrEqual);
var result = parser.Parse("true AND false");
Assert.AreEqual("(Bool:True) (Bool:False) [AND] ", Stringify(result.RpnTokens));
}
public ExpressionParser()
{
Operators = new Dictionary <string, IOperator>();
OperatorVectors = new Dictionary <IOperator, SingleOperandFunctionVector>();
OperatorMatrices = new Dictionary <IOperator, DoubleOperandFunctionMatrix>();
// Got operator precedence from here: http://www.tutorialspoint.com/csharp/csharp_operators_precedence.htm
// This is better as it includes functions: http://en.cppreference.com/w/c/language/operator_precedence
#region Casts
{
var castMatrix = UnaryCastMatrix.Create();
RegisterUnaryCastOperator(OperandType.Sbyte, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Byte, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Short, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Ushort, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Int, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Uint, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Long, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Ulong, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Char, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Float, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Double, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Bool, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Decimal, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableSbyte, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableByte, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableShort, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableUshort, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableInt, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableUint, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableLong, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableUlong, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableChar, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableFloat, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableDouble, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableBool, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.NullableDecimal, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.String, 12, castMatrix);
RegisterUnaryCastOperator(OperandType.Object, 12, castMatrix);
}
#endregion
// Register UnaryMinus ...
UnaryMinus = RegisterUnaryOperator("UnaryMinus", 12, UnaryMinusVector.Create());
UnaryPlus = RegisterUnaryOperator("UnaryPlus", 12, AddVector.Create());
RegisterUnaryOperator("!", 12, UnaryNotVector.Create());
RegisterUnaryOperator("~", 12, UnaryComplementVector.Create());
RegisterOperator("*", 11, MultiplyMatrix.Create());
RegisterOperator("/", 11, DivideMatrix.Create());
RegisterOperator("%", 11, ModuloMatrix.Create());
PlusOperator = RegisterOperator("+", 10, AddMatrix.Create());
MinusOperator = RegisterOperator("-", 10, SubtractMatrix.Create());
RegisterOperator("<", 9, LessThanMatrix.Create());
RegisterOperator(">", 9, GreaterThanMatrix.Create());
RegisterOperator(">=", 9, GreaterThanOrEqualMatrix.Create());
RegisterOperator("<=", 9, LessThanOrEqualMatrix.Create());
RegisterOperator("!=", 8, NotEqualMatrix.Create());
RegisterOperator("==", 8, EqualityMatrix.Create());
RegisterOperator("&", 7, BitwiseAndMatrix.Create());
RegisterOperator("^", 6, BitwiseXorMatrix.Create());
RegisterOperator("|", 5, BitwiseOrMatrix.Create());
RegisterOperator("&&", 4, LogicalAndMatrix.Create(), ShortCircuitMode.LogicalAnd);
RegisterOperator("||", 3, LogicalOrMatrix.Create(), ShortCircuitMode.LogicalOr);
// Register operators ...
RegisterSetEqualsOperator("=", 2, SetEqualsMatrix.Create()); // Can do assignment to a variable.
CommaOperator = RegisterOperator(",", 1, null); // Do nothing. Correct???
OpenParenthesisOperator = RegisterOperator("(", 0, null, ShortCircuitMode.None, OperatorType.OpenParenthesis);
CloseParenthesisOperator = RegisterOperator(")", 13, null, ShortCircuitMode.None, OperatorType.CloseParenthesis);
// Register functions ...
Functions = new Dictionary <string, IOperator>();
RegisterFunction("_debug_mul", OperatorActions.DoMultiply, 2);
// TODO: What should the precedence be? I don't think it matters because it is never read.
}