/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IEvaluationContext evalContext)
{
var left = LeftOperand.Evaluate(evalContext);
var right = RightOperand.Evaluate(evalContext);
switch (left.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
var leftNum = left.AsLong();
switch (right.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
return(new ExpressionValue(leftNum ^ right.AsLong()));
case ExpressionValueType.Real:
case ExpressionValueType.String:
EvaluationError = RIGHT_OPER_ERROR;
return(ExpressionValue.Error);
default:
return(ExpressionValue.Error);
}
case ExpressionValueType.Real:
case ExpressionValueType.String:
EvaluationError = LEFT_OPER_ERROR;
return(ExpressionValue.Error);
default:
return(ExpressionValue.Error);
}
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IExpressionEvaluationContext evalContext)
{
// --- Check operands for errors
var leftValue = LeftOperand.Evaluate(evalContext);
if (leftValue.Type == ExpressionValueType.Error)
{
EvaluationError = LeftOperand.EvaluationError;
return(ExpressionValue.Error);
}
var rightValue = RightOperand.Evaluate(evalContext);
if (rightValue.Type == ExpressionValueType.Error)
{
EvaluationError = RightOperand.EvaluationError;
return(ExpressionValue.Error);
}
// --- Test for incompatible types
if (leftValue.Type == ExpressionValueType.ByteArray || rightValue.Type == ExpressionValueType.ByteArray)
{
EvaluationError = "'>>' operator cannot be applied on a byte array";
return(ExpressionValue.Error);
}
// --- Numeric operands
return(new ExpressionValue(leftValue.AsNumber() >> (ushort)rightValue.AsNumber()));
}
public override object Evaluate(object source = null)
{
var left = LeftOperand.Evaluate();
var right = RightOperand.Evaluate();
switch (Operator)
{
case QueryComparisonOperator.Equal:
return((dynamic)left == (dynamic)right);
case QueryComparisonOperator.NotEqual:
return((dynamic)left != (dynamic)right);
case QueryComparisonOperator.GreaterThan:
return((dynamic)left > (dynamic)right);
case QueryComparisonOperator.GreaterThanOrEqual:
return((dynamic)left >= (dynamic)right);
case QueryComparisonOperator.LessThan:
return((dynamic)left < (dynamic)right);
case QueryComparisonOperator.LessThanOrEqual:
return((dynamic)left <= (dynamic)right);
default:
throw new StorageArgumentOutOfRangeException(nameof(Operator), $"Operator {Operator} not supported");
}
}
public double Evaluate(Dictionary <string, double> input)
{
var leftValue = LeftOperand.Evaluate(input);
var rightValue = Math.Min(100, RightOperand.Evaluate(input));
return(Complex.Pow(leftValue, rightValue).Real);
}
public IExpressionNode Simplify()
{
LeftOperand = LeftOperand.Simplify();
RightOperand = RightOperand.Simplify();
if (!LeftOperand.ContainsVariable() && !RightOperand.ContainsVariable())
{
return(new Constant(this.Evaluate(null)));
}
else if (!LeftOperand.ContainsVariable() && RightOperand.ContainsVariable())
{
if (LeftOperand.Evaluate(null) == 0)
{
return(new Constant(0));
}
}
else if (LeftOperand.ContainsVariable() && !RightOperand.ContainsVariable())
{
if (RightOperand.Evaluate(null) == 0)
{
throw new DivideByZeroException();
}
if (RightOperand.Evaluate(null) == 1)
{
return(LeftOperand.DeepCopy());
}
}
return(this);
}
public override JSValue Evaluate(Context context)
{
var task = new Task <JSValue>(() =>
{
Module module = context._module.Import(LeftOperand.Evaluate(context).ToString());
var m = JSObject.CreateObject();
foreach (var item in module.Exports)
{
var key = item.Key;
if (key == string.Empty)
{
key = "default";
}
m[key] = item.Value;
}
return(m);
});
task.Start();
var result = new Promise(task);
return(context.GlobalContext.ProxyValue(result));
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IEvaluationContext evalContext)
{
var left = LeftOperand.Evaluate(evalContext);
var right = RightOperand.Evaluate(evalContext);
switch (left.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
var leftNum = left.AsLong();
switch (right.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
return(new ExpressionValue(leftNum >= right.AsLong()));
case ExpressionValueType.Real:
return(new ExpressionValue(leftNum >= right.AsReal()));
case ExpressionValueType.String:
EvaluationError = "Cannot compare an integer number with a string";
return(ExpressionValue.Error);
default:
return(ExpressionValue.Error);
}
case ExpressionValueType.Real:
var leftReal = left.AsReal();
switch (right.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
return(new ExpressionValue(leftReal >= right.AsLong()));
case ExpressionValueType.Real:
return(new ExpressionValue(leftReal >= right.AsReal()));
case ExpressionValueType.String:
EvaluationError = "Cannot compare an integer number with a string";
return(ExpressionValue.Error);
default:
return(ExpressionValue.Error);
}
case ExpressionValueType.String:
if (right.Type == ExpressionValueType.String)
{
return(new ExpressionValue(string.CompareOrdinal(left.AsString(), right.AsString()) >= 0));
}
EvaluationError = "String can be compared only to another string";
return(ExpressionValue.Error);
default:
return(ExpressionValue.Error);
}
}
public bool Evaluate(IReadOnlyMemory memory)
{
var leftValue = LeftOperand.Evaluate(memory).ToInt();
var rightValue = RightOperand.Evaluate(memory).ToInt();
var result = EvaluateExpression(leftValue, rightValue, Operation);
return(result);
}
public override void Evaluate([CanBeNull] object parameter, [NotNull] RuleStack stack)
{
Assert.ArgumentNotNull(parameter, nameof(parameter));
Assert.ArgumentNotNull(stack, nameof(stack));
LeftOperand.Evaluate(parameter, stack);
RightOperand.Evaluate(parameter, stack);
}
public double Evaluate(Dictionary <string, double> input)
{
if (Math.Abs(RightOperand.Evaluate(input)) < 0.001)
{
return(LeftOperand.Evaluate(input) * 1000);
}
return(LeftOperand.Evaluate(input) / RightOperand.Evaluate(input));
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IExpressionEvaluationContext evalContext)
{
var left = LeftOperand.Evaluate(evalContext);
var right = RightOperand.Evaluate(evalContext);
SuggestWiderType();
return(left.IsValid && right.IsValid
? new ExpressionValue(left.Value >> (int)right.Value)
: ExpressionValue.Error);
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IExpressionEvaluationContext evalContext)
{
var left = LeftOperand.Evaluate(evalContext);
var right = RightOperand.Evaluate(evalContext);
SuggestType(ExpressionValueType.Bool);
return(left.IsValid && right.IsValid
? new ExpressionValue(left.Value >= right.Value ? 1u : 0u)
: ExpressionValue.Error);
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ushort Calculate(IEvaluationContext evalContext)
{
var divider = RightOperand.Evaluate(evalContext);
if (divider != 0)
{
return((ushort)(LeftOperand.Evaluate(evalContext) / divider));
}
EvaluationError = "Divide by zero error";
return(0);
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IExpressionEvaluationContext evalContext)
{
// --- Check operands for errors
var leftValue = LeftOperand.Evaluate(evalContext);
if (leftValue.Type == ExpressionValueType.Error)
{
EvaluationError = LeftOperand.EvaluationError;
return(ExpressionValue.Error);
}
var rightValue = RightOperand.Evaluate(evalContext);
if (rightValue.Type == ExpressionValueType.Error)
{
EvaluationError = RightOperand.EvaluationError;
return(ExpressionValue.Error);
}
// --- Test if both operands are byte arrays
if (leftValue.Type == ExpressionValueType.ByteArray)
{
if (rightValue.Type != ExpressionValueType.ByteArray)
{
EvaluationError = "Cannot apply bitwise XOR on a numeric value and a byte array";
return(ExpressionValue.Error);
}
// --- Bitwise XOR each array elements (shortest)
var leftArray = leftValue.AsByteArray();
var rightArray = rightValue.AsByteArray();
var shortest = leftArray.Length > rightArray.Length ? leftArray.Length : rightArray.Length;
var resultArray = new byte[shortest];
for (var i = 0; i < shortest; i++)
{
resultArray[i] = (byte)(leftArray[i] ^ rightArray[i]);
}
return(new ExpressionValue(resultArray));
}
// --- Test incompatible types
if (rightValue.Type == ExpressionValueType.ByteArray)
{
EvaluationError = "Cannot apply bitwise XOR on a byte array and a numeric value";
return(ExpressionValue.Error);
}
// --- Numeric operands
return(new ExpressionValue(leftValue.AsNumber() ^ rightValue.AsNumber()));
}
public override void Evaluate([CanBeNull] object parameter, [NotNull] RuleStack stack)
{
Assert.ArgumentNotNull(stack, nameof(stack));
LeftOperand.Evaluate(parameter, stack);
var left = (bool)stack.Pop();
if (!left)
{
stack.Push(false);
return;
}
RightOperand.Evaluate(parameter, stack);
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IEvaluationContext evalContext)
{
var left = LeftOperand.Evaluate(evalContext);
var right = RightOperand.Evaluate(evalContext);
if (left.Type != ExpressionValueType.Bool && left.Type != ExpressionValueType.Integer)
{
EvaluationError = "The left operand of the shift left operator must be integral";
return(ExpressionValue.Error);
}
if (right.Type != ExpressionValueType.Bool && right.Type != ExpressionValueType.Integer)
{
EvaluationError = "Right operand of the shift left operator must be integral";
return(ExpressionValue.Error);
}
return(new ExpressionValue(left.AsLong() << (ushort)right.AsLong()));
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IExpressionEvaluationContext evalContext)
{
// --- Check operands for errors
var leftValue = LeftOperand.Evaluate(evalContext);
if (leftValue.Type == ExpressionValueType.Error)
{
EvaluationError = LeftOperand.EvaluationError;
return(ExpressionValue.Error);
}
var rightValue = RightOperand.Evaluate(evalContext);
if (rightValue.Type == ExpressionValueType.Error)
{
EvaluationError = RightOperand.EvaluationError;
return(ExpressionValue.Error);
}
// --- Test if both operands are byte arrays
if (leftValue.Type == ExpressionValueType.ByteArray)
{
if (rightValue.Type != ExpressionValueType.ByteArray)
{
EvaluationError = "Cannot add a numeric value to a byte array";
return(ExpressionValue.Error);
}
// --- Concatenate the two byte arrays
var leftArray = leftValue.AsByteArray();
var rightArray = rightValue.AsByteArray();
var resultArray = new byte[leftArray.Length + rightArray.Length];
System.Buffer.BlockCopy(leftArray, 0, resultArray, 0, leftArray.Length);
System.Buffer.BlockCopy(rightArray, 0, resultArray, leftArray.Length, rightArray.Length);
return(new ExpressionValue(resultArray));
}
// --- Test for incompatible types
if (rightValue.Type == ExpressionValueType.ByteArray)
{
EvaluationError = "Cannot add a byte array to a numeric value";
return(ExpressionValue.Error);
}
// --- Numeric operands
return(new ExpressionValue(leftValue.AsNumber() + rightValue.AsNumber()));
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IExpressionEvaluationContext evalContext)
{
var left = LeftOperand.Evaluate(evalContext);
var right = RightOperand.Evaluate(evalContext);
if (!left.IsValid || !right.IsValid)
{
return(ExpressionValue.Error);
}
if (right.Value != 0)
{
SuggestWiderType();
return(new ExpressionValue(left.Value % right.Value));
}
EvaluationError = "Divide by zero error";
return(ExpressionValue.Error);
}
public override object Evaluate(object source = null)
{
switch (Operator)
{
case QueryLogicalOperator.And:
return((bool)LeftOperand.Evaluate() && (bool)RightOperand.Evaluate());
case QueryLogicalOperator.Or:
return((bool)LeftOperand.Evaluate() || (bool)RightOperand.Evaluate());
case QueryLogicalOperator.Not:
return(!(bool)LeftOperand.Evaluate());
default:
throw new StorageArgumentOutOfRangeException(nameof(Operator), $"Operator {Operator} not supported");
}
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IExpressionEvaluationContext evalContext)
{
// --- Check operands for errors
var leftValue = LeftOperand.Evaluate(evalContext);
if (leftValue.Type == ExpressionValueType.Error)
{
EvaluationError = LeftOperand.EvaluationError;
return(ExpressionValue.Error);
}
var rightValue = RightOperand.Evaluate(evalContext);
if (rightValue.Type == ExpressionValueType.Error)
{
EvaluationError = RightOperand.EvaluationError;
return(ExpressionValue.Error);
}
// --- Test if both operands are byte arrays
if (leftValue.Type == ExpressionValueType.ByteArray)
{
if (rightValue.Type != ExpressionValueType.ByteArray)
{
EvaluationError = "Byte array can be compared only to byte array";
return(ExpressionValue.Error);
}
return(new ExpressionValue(!leftValue.AsByteArray().SequenceEqual(rightValue.AsByteArray())));
}
// --- Test for incompatible types
if (rightValue.Type == ExpressionValueType.ByteArray)
{
EvaluationError = "Cannot compare a byte array with a numeric value";
return(ExpressionValue.Error);
}
// --- Numeric operands
return(new ExpressionValue(leftValue.AsNumber() != (ushort)rightValue.AsNumber()));
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IEvaluationContext evalContext)
{
var left = LeftOperand.Evaluate(evalContext);
var right = RightOperand.Evaluate(evalContext);
switch (left.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
var leftNum = left.AsLong();
switch (right.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
return(new ExpressionValue(leftNum + right.AsLong()));
case ExpressionValueType.Real:
return(new ExpressionValue(leftNum + right.AsReal()));
case ExpressionValueType.String:
EvaluationError = "Cannot add an integral value and a string";
return(ExpressionValue.Error);
default:
return(ExpressionValue.Error);
}
case ExpressionValueType.Real:
var leftReal = left.AsReal();
switch (right.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
return(new ExpressionValue(leftReal + right.AsLong()));
case ExpressionValueType.Real:
return(new ExpressionValue(leftReal + right.AsReal()));
case ExpressionValueType.String:
EvaluationError = "Cannot add a real value and a string";
return(ExpressionValue.Error);
default:
return(ExpressionValue.Error);
}
case ExpressionValueType.String:
if (right.Type == ExpressionValueType.String)
{
return(new ExpressionValue($"{left.AsString()}{right.AsString()}"));
}
else
{
EvaluationError = "Only a string can be added to a string";
return(ExpressionValue.Error);
}
default:
return(ExpressionValue.Error);
}
}
public override double Evaluate()
{
return(LeftOperand.Evaluate() - RightOperand.Evaluate());
}
public double Evaluate(Dictionary <string, double> input)
{
return(LeftOperand.Evaluate(input) + RightOperand.Evaluate(input));
}
public override JSValue Evaluate(Context context)
{
return(JSObject.getOwnPropertyNames(new Arguments {
LeftOperand.Evaluate(context)
}));
}
public override int Evaluate()
{
return(LeftOperand.Evaluate() + RightOperand.Evaluate());
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ExpressionValue Calculate(IEvaluationContext evalContext)
{
var left = LeftOperand.Evaluate(evalContext);
var right = RightOperand.Evaluate(evalContext);
switch (right.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
var rightNum = right.AsLong();
if (rightNum == 0)
{
EvaluationError = DIV_BY_ZERO_ERROR;
return(ExpressionValue.Error);
}
switch (left.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
return(new ExpressionValue(left.AsLong() / rightNum));
case ExpressionValueType.Real:
return(new ExpressionValue(left.AsReal() / rightNum));
case ExpressionValueType.String:
EvaluationError = LEFT_STRING_ERROR;
return(ExpressionValue.Error);
default:
return(ExpressionValue.Error);
}
case ExpressionValueType.Real:
var rightReal = right.AsReal();
if (Math.Abs(rightReal) < double.Epsilon)
{
EvaluationError = DIV_BY_ZERO_ERROR;
return(ExpressionValue.Error);
}
switch (left.Type)
{
case ExpressionValueType.Bool:
case ExpressionValueType.Integer:
return(new ExpressionValue(left.AsLong() / rightReal));
case ExpressionValueType.Real:
return(new ExpressionValue(left.AsReal() / rightReal));
case ExpressionValueType.String:
EvaluationError = LEFT_STRING_ERROR;
return(ExpressionValue.Error);
default:
return(ExpressionValue.Error);
}
case ExpressionValueType.String:
EvaluationError = RIGHT_STRING_ERROR;
return(ExpressionValue.Error);
default:
return(ExpressionValue.Error);
}
}
public override double Evaluate(double x)
{
return(LeftOperand.Evaluate(x) * RightOperand.Evaluate(x));
}
/// <summary>
/// Calculates the result of the binary operation.
/// </summary>
/// <param name="evalContext">Evaluation context</param>
/// <returns>Result of the operation</returns>
public override ushort Calculate(IEvaluationContext evalContext)
=> (ushort)(LeftOperand.Evaluate(evalContext)
& RightOperand.Evaluate(evalContext));
public double Evaluate(Dictionary <string, double> input) => LeftOperand.Evaluate(input) * RightOperand.Evaluate(input);