/// <summary>
/// Decode the token, is it an operator??
/// Depending of the language, get the right operator.
/// can be:
/// Logical, comparison, calculation or a setValue.
/// </summary>
/// <param name="token"></param>
private bool DecodeTokenOperator(Stack <ExpressionBase> stack, ExprToken token)
{
//----is it a comparison operator?
if (_exprEvalConfig.DictComparisonOperators.ContainsKey(token.Value.ToLower()))
{
OperatorComparisonCode operComp = _exprEvalConfig.DictComparisonOperators[token.Value.ToLower()];
// empile le token opérateur
ExprOperatorComparison exprOperatorComparison = new ExprOperatorComparison();
exprOperatorComparison.Operator = operComp;
exprOperatorComparison.Token = token;
stack.Push(exprOperatorComparison);
return(true);
}
// is it a logical operator?
if (_exprEvalConfig.DictLogicalOperators.ContainsKey(token.Value.ToLower()))
{
OperatorLogicalCode operLogical = _exprEvalConfig.DictLogicalOperators[token.Value.ToLower()];
// is it the NOT operator?
if (operLogical == OperatorLogicalCode.Not)
{
// empile le token opérateur
ExprOperatorLogicalNot exprOperatorLogicalNot = new ExprOperatorLogicalNot();
exprOperatorLogicalNot.Token = token;
stack.Push(exprOperatorLogicalNot);
return(true);
}
// empile le token opérateur
ExprOperatorLogical exprOperatorLogical = new ExprOperatorLogical();
exprOperatorLogical.Operator = operLogical;
exprOperatorLogical.Token = token;
stack.Push(exprOperatorLogical);
return(true);
}
// is it a calculation operator?
if (_exprEvalConfig.DictCalculationOperators.ContainsKey(token.Value.ToLower()))
{
OperatorCalculationCode operCalc = _exprEvalConfig.DictCalculationOperators[token.Value.ToLower()];
// empile le token opérateur
ExprOperatorCalculation exprOperatorCalc = new ExprOperatorCalculation();
exprOperatorCalc.Operator = operCalc;
exprOperatorCalc.Token = token;
stack.Push(exprOperatorCalc);
return(true);
}
// the token is not an operator
return(false);
}
/// <summary>
/// Do the calculation of the multiplication/division expr comme l'add mais le rs va remplacer l'objet Mul dans le main add)
///
/// </summary>
/// <param name="execResult"></param>
/// <param name="exprCalculation"></param>
/// <param name="mainCalcAdd"></param>
/// <param name="exprExecCalcResult"></param>
/// <returns></returns>
private bool DoCalculationExprMul(ExecResult execResult, ExprCalculation exprCalculation, ExprExecCalcMul execCalcMul, out ExprExecCalcValue execCalcValueResult)
{
// the temporary result, to start the addition calculation
ExprExecValueInt resInt = new ExprExecValueInt();
// the integer neutral value, the first calculation is 1*operand[0]
resInt.Value = 1;
ExpressionExecBase exprExecCalcResult = resInt;
ExpressionExecBase exprExecTmpResult = null;
int pos = 0;
// scan addition expressions, two by two operands
foreach (ExprExecCalcValue execCalcValue in execCalcMul.ListExprExecCalcValue)
{
// the item should be a number: an int or a double
// get the operator
ExprOperatorCalculation operatorCalc;
// the first calc is special: res := 0 + firstOperand
if (pos == 0)
{
// put the default neutral operator: +
operatorCalc = new ExprOperatorCalculation();
operatorCalc.Operator = OperatorCalculationCode.Multiplication;
//operatorCalc.Token = mainCalcAdd.ListOperator[0].Token;
}
else
{
// there one operator less than operand
operatorCalc = execCalcMul.ListOperator[pos - 1];
}
// Do the calculation: tmpRes := res +/- currentValue
DoCalculationTwoOperands(execResult, exprCalculation, exprExecCalcResult, execCalcValue.ExprExecValue, operatorCalc, out exprExecTmpResult);
// the current temporary result
exprExecCalcResult = exprExecTmpResult;
pos++;
}
// then replace the calc mul expr by the result
execCalcValueResult = new ExprExecCalcValue();
execCalcValueResult.ExprExecValue = exprExecTmpResult;
//mainCalcAdd.ListExprExecCalc[posMulInMainAdd] = execCalcValueResult;
return(true);
}
/// <summary>
/// Execute/evaluate the addition main expression.
/// </summary>
/// <param name="execResult"></param>
/// <param name="exprCalculation"></param>
/// <param name="listCalcAdd"></param>
/// <returns></returns>
private bool DoCalculationMainExprAdditions(ExecResult execResult, ExprCalculation exprCalculation, ExprExecCalcAdd mainCalcAdd, out ExpressionExecBase exprExecCalcResult)
{
// the temporary result, to start the addition calculation
ExprExecValueInt resInt = new ExprExecValueInt();
// the integer neutral value, the first calculation is 0+operand[0]
resInt.Value = 0;
exprExecCalcResult = resInt;
ExpressionExecBase exprExecTmpResult;
int pos = 0;
// scan addition expressions, two by two operands
foreach (ExprExecCalcBase execCalcBase in mainCalcAdd.ListExprExecCalc)
{
// the item should be a number: an int or a double
ExprExecCalcValue execCalcValue = execCalcBase as ExprExecCalcValue;
// get the operator
ExprOperatorCalculation operatorCalc;
// the first calc is special: res := 0 + firstOperand
if (pos == 0)
{
// put the default neutral operator: +
operatorCalc = new ExprOperatorCalculation();
operatorCalc.Operator = OperatorCalculationCode.Plus;
if (mainCalcAdd.ListOperator.Count > 0)
{
operatorCalc.Token = mainCalcAdd.ListOperator[0].Token;
}
}
else
{
// there one operator less than operand
operatorCalc = mainCalcAdd.ListOperator[pos - 1];
}
// Do the calculation: tmpRes := res +/- currentValue
DoCalculationTwoOperands(execResult, exprCalculation, exprExecCalcResult, execCalcValue.ExprExecValue, operatorCalc, out exprExecTmpResult);
// the current temporary result
exprExecCalcResult = exprExecTmpResult;
pos++;
}
return(true);
}
/// <summary>
/// Do the calculation: res := operandLeft operator operandRight.
/// Both operand must be number, int or double.
/// the operator can be: +, -, *, /.
/// </summary>
/// <param name="execResult"></param>
/// <param name="exprExecBase"></param>
/// <returns></returns>
private bool DoCalculationTwoOperands(ExecResult execResult, ExprCalculation exprCalculation, ExpressionExecBase exprExecBaseLeft, ExpressionExecBase exprExecBaseRight, ExprOperatorCalculation operatorCalc, out ExpressionExecBase exprExecCalcResult)
{
exprExecCalcResult = null;
CalcIntOrDouble calcIntOrDoubleLeft = CalcIntOrDouble.NotDefined;
CalcIntOrDouble calcIntOrDoubleRight = CalcIntOrDouble.NotDefined;
int valLeftInt = 0;
int valRightInt = 0;
double valLeftDouble = 0;
double valRightDouble = 0;
//---parse the left operand
ExprExecValueInt exprExecValueLeftInt = exprExecBaseLeft as ExprExecValueInt;
if (exprExecValueLeftInt != null)
{
valLeftInt = exprExecValueLeftInt.Value;
calcIntOrDoubleLeft = CalcIntOrDouble.IsInt;
}
else
{
ExprExecValueDouble exprExecValueLeftDouble = exprExecBaseLeft as ExprExecValueDouble;
if (exprExecValueLeftDouble != null)
{
valLeftDouble = exprExecValueLeftDouble.Value;
calcIntOrDoubleLeft = CalcIntOrDouble.IsDouble;
}
}
//---parse the right operand
ExprExecValueInt exprExecValueRightInt = exprExecBaseRight as ExprExecValueInt;
if (exprExecValueRightInt != null)
{
valRightInt = exprExecValueRightInt.Value;
calcIntOrDoubleRight = CalcIntOrDouble.IsInt;
}
else
{
ExprExecValueDouble exprExecValueRightDouble = exprExecBaseRight as ExprExecValueDouble;
if (exprExecValueRightDouble != null)
{
valRightDouble = exprExecValueRightDouble.Value;
calcIntOrDoubleRight = CalcIntOrDouble.IsDouble;
}
}
//----wrong type
if (calcIntOrDoubleLeft == CalcIntOrDouble.NotDefined)
{
// other operators are not allowed on the boolean type (only bool)
execResult.AddErrorExec(ErrorCode.ExprCalculationOperandTypeUnExcepted, "Position", exprExecBaseLeft.Expr.Token.Position.ToString(), "Operand", exprExecBaseLeft.Expr.Token.Value);
return(false);
}
if (calcIntOrDoubleRight == CalcIntOrDouble.NotDefined)
{
// other operators are not allowed on the boolean type (only bool)
execResult.AddErrorExec(ErrorCode.ExprCalculationOperandTypeUnExcepted, "Position", exprExecBaseRight.Expr.Token.Position.ToString(), "Operand", exprExecBaseRight.Expr.Token.Value);
return(false);
}
// if one of both operand is an double, convert the other to a double
if (calcIntOrDoubleLeft == CalcIntOrDouble.IsDouble || calcIntOrDoubleRight == CalcIntOrDouble.IsDouble)
{
if (calcIntOrDoubleLeft == CalcIntOrDouble.IsInt)
{
valLeftDouble = (double)valLeftInt;
}
if (calcIntOrDoubleRight == CalcIntOrDouble.IsInt)
{
valRightDouble = (double)valRightInt;
}
// used to define the calculation type
calcIntOrDoubleLeft = CalcIntOrDouble.IsDouble;
}
//----calculate, depending on the operator: Plus
if (operatorCalc.Operator == OperatorCalculationCode.Plus)
{
if (calcIntOrDoubleLeft == CalcIntOrDouble.IsDouble)
{
ExprExecValueDouble resDouble = new ExprExecValueDouble();
resDouble.Value = valLeftDouble + valRightDouble;
exprExecCalcResult = resDouble;
return(true);
}
ExprExecValueInt resInt = new ExprExecValueInt();
resInt.Value = valLeftInt + valRightInt;
exprExecCalcResult = resInt;
return(true);
}
//----calculate, depending on the operator: Minus
if (operatorCalc.Operator == OperatorCalculationCode.Minus)
{
if (calcIntOrDoubleLeft == CalcIntOrDouble.IsDouble)
{
ExprExecValueDouble resDouble = new ExprExecValueDouble();
resDouble.Value = valLeftDouble - valRightDouble;
exprExecCalcResult = resDouble;
return(true);
}
ExprExecValueInt resInt = new ExprExecValueInt();
resInt.Value = valLeftInt - valRightInt;
exprExecCalcResult = resInt;
return(true);
}
//----calculate, depending on the operator: Multiplication
if (operatorCalc.Operator == OperatorCalculationCode.Multiplication)
{
if (calcIntOrDoubleLeft == CalcIntOrDouble.IsDouble)
{
ExprExecValueDouble resDouble = new ExprExecValueDouble();
resDouble.Value = valLeftDouble * valRightDouble;
exprExecCalcResult = resDouble;
return(true);
}
ExprExecValueInt resInt = new ExprExecValueInt();
resInt.Value = valLeftInt * valRightInt;
exprExecCalcResult = resInt;
return(true);
}
//----calculate, depending on the operator: Division
if (operatorCalc.Operator == OperatorCalculationCode.Division)
{
if (calcIntOrDoubleLeft == CalcIntOrDouble.IsDouble)
{
ExprExecValueDouble resDouble = new ExprExecValueDouble();
resDouble.Value = valLeftDouble / valRightDouble;
exprExecCalcResult = resDouble;
return(true);
}
// the result can be a double!
double res = (double)valLeftInt / (double)valRightInt;
double res2 = res - Math.Truncate(res);
if (res2 == 0)
{
ExprExecValueInt resInt = new ExprExecValueInt();
resInt.Value = valLeftInt / valRightInt;
exprExecCalcResult = resInt;
return(true);
}
else
{
ExprExecValueDouble resDouble = new ExprExecValueDouble();
resDouble.Value = res; // valLeftInt / valRightInt;
exprExecCalcResult = resDouble;
return(true);
}
return(true);
}
// operator not yet implemented
execResult.AddErrorExec(ErrorCode.ExprCalculationOperatorNotYetImplemented, "Position", exprExecBaseLeft.Expr.Token.Position.ToString(), "Operand", exprExecBaseLeft.Expr.Token.Value);
return(false);
}