/// <summary>
/// Applies a LogicalOrAssignment operation to the
/// <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns><see cref="object" />.</returns>
/// <exception cref="Exception">
/// </exception>
internal static object LogicalOrAssign(Nodes.Diadic node)
{
try
{
if ((node.LHS.EvaluatedType == typeof(bool)) && (node.RHS.EvaluatedType == typeof(bool)))
{
return(null);
}
if (node.LHS.Token.TokenType != Token.TokenTypes.Variable)
{
throw new Exception("Variable dictionary error");
}
if (!Variables.VariableList.ContainsKey(node.LHS.Value.ToString()))
{
Variables.VariableList.Add(node.LHS.Value.ToString(),
(bool)node.LHS.EvaluatedValue || (bool)node.RHS.EvaluatedValue);
}
else
{
Variables.VariableList[node.LHS.Value.ToString()] =
(bool)node.LHS.EvaluatedValue || (bool)node.RHS.EvaluatedValue;
}
return(null);
}
catch (Exception e)
{
throw new Exception("Assignment operation exception: " + e);
}
}
/// <summary>
/// Applies a BitwiseXORAssignment operation to the
/// <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns><see cref="object" />.</returns>
/// <exception cref="Exception">
/// </exception>
internal static object BitwiseXorAssign(Nodes.Diadic node)
{
try
{
if (node.LHS.Token.TokenType != Token.TokenTypes.Variable)
{
throw new Exception("Variable dictionary error");
}
if (!Variables.VariableList.ContainsKey(node.LHS.Value.ToString()))
{
Variables.VariableList.Add(node.LHS.Value.ToString(),
Convert.ToInt64(node.LHS.EvaluatedValue) ^
Convert.ToInt64(node.RHS.EvaluatedValue));
}
else
{
Variables.VariableList[node.LHS.Value.ToString()] =
Convert.ToInt64(node.LHS.EvaluatedValue) ^
Convert.ToInt64(node.RHS.EvaluatedValue);
}
return(null);
}
catch (Exception e)
{
throw new Exception("Assignment operation exception: " + e);
}
}
/// <summary>
/// Applies a Multiplication operation to the <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns><see cref="object" />.</returns>
/// <exception cref="Exception">
/// </exception>
internal static object Multiply(Nodes.Diadic node)
{
try
{
try
{
if ((node.LHS.EvaluatedType == typeof(int)) && (node.RHS.EvaluatedType == typeof(string)))
{
return(Helper.DuplicateString((string)node.RHS.EvaluatedValue,
(int)node.LHS.EvaluatedValue));
}
if ((node.LHS.EvaluatedType == typeof(string)) && (node.RHS.EvaluatedType == typeof(int)))
{
Helper.DuplicateString((string)node.LHS.EvaluatedValue,
(int)node.RHS.EvaluatedValue);
}
throw new Exception();
}
catch
{
return(Convert.ToDouble(node.LHS.EvaluatedValue) *
Convert.ToDouble(node.RHS.EvaluatedValue));
}
}
catch (Exception e)
{
throw new Exception("Multiplication operation exception: " + e);
}
}
/// <summary>
/// Applies a <see cref="ShiftRight" /> operation to the <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns><see cref="object" />.</returns>
/// <exception cref="Exception">
/// </exception>
internal static object ShiftRight(Nodes.Diadic node)
{
try
{
try
{
if ((node.LHS.EvaluatedType == typeof(string)) && (node.RHS.EvaluatedType == typeof(int)))
{
return(Helper.ShiftStringRight((string)node.LHS.EvaluatedValue,
(int)node.RHS.EvaluatedValue));
}
throw new Exception();
}
catch
{
return(Convert.ToInt64(node.LHS.EvaluatedValue) >>
Convert.ToInt32(node.RHS.EvaluatedValue));
}
}
catch (Exception e)
{
throw new Exception("Right Shift operation exception: " + e);
}
}
/// <summary>
/// Applies a Subtraction operation to the <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns>System.<see cref="object" />.</returns>
/// <exception cref="Exception">
/// </exception>
internal static object Subtract(Nodes.Diadic node)
{
try
{
try
{
if ((node.LHS.EvaluatedType == typeof(string)) && (node.RHS.EvaluatedType == typeof(string)))
{
return(((string)node.LHS.EvaluatedValue).Replace(
(string)node.RHS.EvaluatedValue, ""));
}
throw new Exception();
}
catch
{
return(Convert.ToDouble(node.LHS.EvaluatedValue) -
Convert.ToDouble(node.RHS.EvaluatedValue));
}
}
catch (Exception e)
{
throw new Exception("Subtraction operation exception: " + e);
}
}
/// <summary>
/// Applies a <see cref="Modulus" /> operation to the <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns><see cref="object" />.</returns>
/// <exception cref="Exception">
/// </exception>
/// <exception cref="DivideByZeroException"></exception>
internal static object Modulus(Nodes.Diadic node)
{
try
{
try
{
if ((node.LHS.EvaluatedType == typeof(string)) && (node.RHS.EvaluatedType == typeof(string)))
{
return(string.Concat((string)node.LHS.EvaluatedValue,
(string)node.RHS.EvaluatedValue));
}
throw new Exception();
}
catch
{
// ReSharper disable once CompareOfFloatsByEqualityOperator
if (Convert.ToDouble(node.RHS.EvaluatedValue) == 0)
{
throw new DivideByZeroException("Divide by zero error");
}
return(Convert.ToDouble(node.LHS.EvaluatedValue) %
Convert.ToDouble(node.RHS.EvaluatedValue));
}
}
catch (Exception e)
{
throw new Exception("Modulus operation exception: " + e);
}
}
/// <summary>
/// Applies a Addition operation to the <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns><see cref="object" />.</returns>
/// <exception cref="Exception">
/// </exception>
internal static object Add(Nodes.Diadic node)
{
try
{
try
{
if ((node.LHS.EvaluatedType == typeof(string)) && (node.RHS.EvaluatedType == typeof(string)))
{
return(string.Concat((string)node.LHS.EvaluatedValue,
(string)node.RHS.EvaluatedValue));
}
throw new Exception();
}
catch
{
return(Convert.ToDouble(node.LHS.EvaluatedValue) +
Convert.ToDouble(node.RHS.EvaluatedValue));
}
}
catch (Exception e)
{
throw new Exception("Addition operation exception: " + e);
}
}
/// <summary>
/// <see cref="MulExprn" /> := <see cref="UnaryExprn" /> { { "*" | "/"
/// | "%" } <see cref="MulExprn" /> };
/// </summary>
/// <returns>
/// <see cref="Nodes" />.<see cref="Nodes.Node" />. Monadic | {
/// Diadic }
/// </returns>
private static Nodes.Node MulExprn()
{
//Go further down the order of precedence
var node = UnaryExprn();
//Return if at the end of the expression or not Multiplication / Division operation
if ((CurrentToken == null) ||
(CurrentToken?.TokenType != Token.TokenTypes.Multiplication))
{
return(node);
}
//Create a new diadic node for the Multiplication operation
//Set left hand side and consume the Multiplication token
var diadic = new Nodes.Diadic(node, CurrentToken, null);
ConsumeToken();
//Try to analyse the right hand side
var rhs = MulExprn();
if (rhs == null)
{
return(new Nodes.Error("RHS could not be evaluated"));
}
//If analysis successful, add to the diadic and append to the Abstract Syntax Tree
diadic.RHS = rhs;
return(AddNode(diadic));
}
/// <summary>
/// Applies a <see cref="BitwiseXor" /> operation to the <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns><see cref="object" />.</returns>
/// <exception cref="Exception"></exception>
internal static object BitwiseXor(Nodes.Diadic node)
{
try
{
return(Convert.ToInt64(node.LHS.EvaluatedValue) ^
Convert.ToInt64(node.RHS.EvaluatedValue));
}
catch (Exception e)
{
throw new Exception("Bitwise XOR operation exception: " + e);
}
}
/// <summary>
/// Applies a <see cref="LogicalOr" /> operation to the <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns>
/// <c>
/// <see langword="true" />
/// </c>
/// if the operation is successful,
/// <c>
/// <see langword="false" />
/// </c>
/// otherwise.
/// </returns>
/// <exception cref="Exception">
/// </exception>
internal static bool LogicalOr(Nodes.Diadic node)
{
try
{
if (node.LHS.EvaluatedValue == null)
{
throw new Exception("LHS null value");
}
if (node.RHS.EvaluatedValue == null)
{
throw new Exception("RHS null value");
}
return(Convert.ToBoolean(node.LHS.EvaluatedValue) ||
Convert.ToBoolean(node.RHS.EvaluatedValue));
}
catch (Exception e)
{
throw new Exception("Logical And operation exception: " + e);
}
}
/// <summary>
/// Applies a <see cref="LessThan" /> operation to the <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns>
/// <c>
/// <see langword="true" />
/// </c>
/// if the operation is successful,
/// <c>
/// <see langword="false" />
/// </c>
/// otherwise.
/// </returns>
/// <exception cref="Exception">
/// </exception>
internal static bool LessThan(Nodes.Diadic node)
{
try
{
try
{
if ((node.LHS.EvaluatedType == typeof(string)) && (node.RHS.EvaluatedType == typeof(string)))
{
return(((string)node.LHS.EvaluatedValue).Length < ((string)node.RHS.EvaluatedValue).Length);
}
throw new Exception();
}
catch
{
return(Convert.ToDouble(node.LHS.EvaluatedValue) <
Convert.ToDouble(node.RHS.EvaluatedValue));
}
}
catch (Exception e)
{
throw new Exception("Comparison operation exception: " + e);
}
}
/// <summary>
/// Checks the equality of the <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
/// <returns>
/// <c>
/// <see langword="true" />
/// </c>
/// if the operation is successful,
/// <c>
/// <see langword="false" />
/// </c>
/// otherwise.
/// </returns>
/// <exception cref="Exception">
/// </exception>
internal static bool CheckEquality(Nodes.Diadic node)
{
try
{
try
{
if ((node.LHS.EvaluatedType == typeof(string)) && (node.RHS.EvaluatedType == typeof(string)))
{
return((string)node.LHS.EvaluatedValue == (string)node.RHS.EvaluatedValue);
}
throw new Exception();
}
catch
{
return(Convert.ToDouble(node.LHS.EvaluatedValue) ==
Convert.ToDouble(node.RHS.EvaluatedValue));
}
}
catch (Exception e)
{
throw new Exception("Equality operation exception: " + e);
}
}
/// <summary>
/// Applies a <see cref="ShiftRightRemainder" /> operation to the
/// <paramref name="node" />.
/// </summary>
/// <param name="node">The <paramref name="node" />.</param>
internal static void ShiftRightRemainder(Nodes.Diadic node)
{
}