/// <summary>
/// check that all operand types are expected: int or double only.
/// TODO: string? for concatenation? later.
///
/// </summary>
/// <param name="execResult"></param>
/// <param name="listExpr"></param>
/// <returns></returns>
private bool CheckTypeOperandExprCalculation(ExecResult execResult, List <ExpressionExecBase> listExprExecBase)
{
bool ret = true;
foreach (ExpressionExecBase exprExecBase in listExprExecBase)
{
// is it an int?
ExprExecValueInt exprInt = exprExecBase as ExprExecValueInt;
if (exprInt != null)
{
// yes!
continue;
}
// is it a double?
ExprExecValueDouble exprDouble = exprExecBase as ExprExecValueDouble;
if (exprDouble == null)
{
// neither an int or a double , error!
execResult.AddErrorExec(ErrorCode.ExprCalculationOperandTypeUnExcepted, "Content", exprExecBase.Expr.Token.Value, "Position", exprExecBase.Expr.Token.Position.ToString());
ret = false;
}
}
return(ret);
}
/// <summary>
/// Execute a functionCall.
/// First execute parameters and then execute the function code attached/linked.
/// </summary>
/// <param name="exprExecResult"></param>
/// <param name="exprFunctionCall"></param>
/// <param name="exprExecBase"></param>
/// <returns></returns>
private bool ExecExpressionFunctionCall(ExecResult exprExecResult, ExprFunctionCall exprFunctionCall, out ExpressionExecBase exprExecBase)
{
ExpressionExecBase exprExecParamBase;
List <ExpressionExecBase> listExprExecParam = new List <ExpressionExecBase>();
bool res = true;
exprExecBase = null;
// get the function code
FunctionToCallMapper functionToCallMapper = _exprEvalConfig.ListFunctionToCallMapper.Find(f => f.FunctionCallName.Equals(exprFunctionCall.FunctionName, StringComparison.InvariantCultureIgnoreCase));
if (functionToCallMapper == null)
{
// error
exprExecResult.AddErrorExec(ErrorCode.FunctionCallNotLinked, "FunctionCallName", exprFunctionCall.FunctionName);
return(false);
}
// execute params of the function
foreach (ExpressionBase exprParam in exprFunctionCall.ListExprParameters)
{
res &= ExecExpression(exprExecResult, exprParam, out exprExecParamBase);
listExprExecParam.Add(exprExecParamBase);
}
// a param execution failed
if (!res)
{
return(false);
}
// execute the function code attached to the functionCall, provide executed params
return(_exprExecutorFunctionCall.ExecExpressionFunctionCall(exprExecResult, exprFunctionCall, functionToCallMapper, listExprExecParam, out exprExecBase));
}
/// <summary>
/// Execute the calculation expression.
/// exp: a+b
///
/// Only int or double type are authorized.
///
/// todo: +tard: pour les strings si opérateur +/Plus, faire une concaténation!
/// </summary>
/// <param name="exprExecResult"></param>
/// <param name="exprLogicalNot"></param>
/// <param name="exprExecBase"></param>
/// <returns></returns>
private bool ExecExpressionCalculation(ExecResult execResult, ExprCalculation exprCalculation, out ExpressionExecBase exprExecBase)
{
// the final result of the execution
exprExecBase = null;
// check the number of operands
if (exprCalculation.ListExprOperand.Count > Definitions.ExprCalculationMaxOperandsCount)
{
execResult.AddErrorExec(ErrorCode.ExprCalculationTooManyOperands, "Content", exprExecBase.Expr.Token.Value, "Position", exprExecBase.Expr.Token.Position.ToString());
return(false);
}
// first execute all operands, one by one
List <ExpressionExecBase> listExprExecBase;
if (!ExecListExpression(execResult, exprCalculation.ListExprOperand, out listExprExecBase))
{
// an error occurs
return(false);
}
// check that all operand types are expected: int or double only
if (!CheckTypeOperandExprCalculation(execResult, listExprExecBase))
{
// an error occurs
return(false);
}
// execute the calculation
ExprExecutorCalculation exprExecutorCalculation = new ExprExecutorCalculation();
return(exprExecutorCalculation.Process(execResult, exprCalculation, listExprExecBase, out exprExecBase));
}
public bool GetCheckParamDouble(ExecResult exprExecResult, string functionCallName, ExpressionExecBase param, out ExprExecValueDouble exprParamDouble)
{
exprParamDouble = param as ExprExecValueDouble;
if (exprParamDouble == null)
{
exprExecResult.AddErrorExec(ErrorCode.FunctionCallParamTypeWrong, "FunctionCallName", functionCallName, "ParamTypeExpected", "double"); //, "ParamType", param.GetType().ToString());
return(false);
}
return(true);
}
/// <summary>
/// error occurs on executing the function.
///
/// </summary>
/// <param name="exprExecResult"></param>
/// <param name="e"></param>
/// <returns></returns>
public bool AddErrorExecFailed(ExecResult exprExecResult, Exception e)
{
string innerException = "";
if (e.InnerException != null)
{
innerException = e.InnerException.ToString();
}
exprExecResult.AddErrorExec(ErrorCode.FunctionCallExecException, "Message", e.Message, "InnerException", innerException);
return(false);
}
/// <summary>
/// Exec the function call, return a string value.
/// can have any, one or more parameters.
/// </summary>
/// <param name="exprExecResult"></param>
/// <param name="functionToCallMapper"></param>
/// <param name="exprExecFunctionCallBool"></param>
/// <param name="listExprExecParam"></param>
/// <param name="exprExecBase"></param>
/// <returns></returns>
public bool Exec(ExecResult exprExecResult, ExprExecFunctionCallString exprExecFunctionCallString, List <ExpressionExecBase> listExprExecParam, out ExpressionExecBase exprExecBase)
{
exprExecBase = null;
string res;
bool caseManaged;
if (!ExecFuncRetString_Params(exprExecResult, exprExecFunctionCallString, listExprExecParam, out caseManaged, out res))
{
// an error occurs
return(false);
}
if (!caseManaged)
{
exprExecResult.AddErrorExec(ErrorCode.ExpressionTypeNotYetImplemented, "Type", "FunctionCall");
return(false);
}
// execute the function linked to the functionCall found in the expression
exprExecFunctionCallString.Value = res;
exprExecBase = exprExecFunctionCallString;
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);
}
/// <summary>
/// Execute the logical expression.
/// exp: (a AND b)
///
/// Only bool type are authorized.
/// </summary>
/// <param name="exprExecResult"></param>
/// <param name="exprComparison"></param>
/// <param name="exprExecBase"></param>
/// <returns></returns>
private bool ExecExpressionLogical(ExecResult exprExecResult, ExprLogical exprLogical, out ExpressionExecBase exprExecBase)
{
exprExecBase = null;
//----first step is to execute both operands
ExpressionExecBase exprExecBaseLeft;
ExecExpression(exprExecResult, exprLogical.ExprLeft, out exprExecBaseLeft);
ExpressionExecBase exprExecBaseRight;
ExecExpression(exprExecResult, exprLogical.ExprRight, out exprExecBaseRight);
//---Are the operands boolean type?
ExprExecValueBool exprExecValueLeftBool = exprExecBaseLeft as ExprExecValueBool;
if (exprExecValueLeftBool != null)
{
// decode the right operand, should be a bool value too
ExprExecValueBool exprExecValueRightBool = exprExecBaseRight as ExprExecValueBool;
if (exprExecValueRightBool == null)
{
// the type of both operands mismatch!
exprExecResult.AddErrorExec(ErrorCode.ExprLogicalOperandsTypeMismatchBoolExpected, "Position", exprLogical.ExprRight.Token.Position.ToString());
return(false);
}
ExprExecValueBool exprValueBoolResult = new ExprExecValueBool();
// is the operator AND?
if (exprLogical.Operator == OperatorLogicalCode.And)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftBool.Value && exprExecValueRightBool.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator OR?
if (exprLogical.Operator == OperatorLogicalCode.Or)
{
// ok, execute the comparison
exprValueBoolResult.Value = (exprExecValueLeftBool.Value || exprExecValueRightBool.Value);
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator XOR?
if (exprLogical.Operator == OperatorLogicalCode.Xor)
{
// ok, execute the comparison, the operator doesn't exists so do firts a OR
exprValueBoolResult.Value = (exprExecValueLeftBool.Value || exprExecValueRightBool.Value);
// the xor case: both operands are true so the result is false
if (exprExecValueLeftBool.Value && exprExecValueRightBool.Value)
{
exprValueBoolResult.Value = false;
}
exprExecBase = exprValueBoolResult;
return(true);
}
// other operators are not allowed on the boolean type (only bool)
exprExecResult.AddErrorExec(ErrorCode.ExprLogicalOperatorNotAllowed, "Position", exprLogical.ExprLeft.Token.Position.ToString(), "Operator", exprLogical.Operator.ToString());
return(false);
}
//---Are the operands others type? -> error
exprExecResult.AddErrorExec(ErrorCode.ExprLogicalOperandTypeNotAllowed, "Position", exprLogical.ExprLeft.Token.Position.ToString(), "Token", exprExecBaseLeft.GetType().ToString());
return(false);
}
/// <summary>
/// execute the expression, execute the right part, execute the left part, then exec the expr (as 2 value operands)
///
/// Returns always a bool value.
/// exp: a=12, a>=13
///
/// managed type; int and double.
/// for the bool and the string type, only equals and diff are authorized.
/// </summary>
/// <param name="exprComparison"></param>
/// <returns></returns>
private bool ExecExpressionComparison(ExecResult exprExecResult, ExprComparison exprComparison, out ExpressionExecBase exprExecBase)
{
exprExecBase = null;
//----first step is to decode/compile both operands
ExpressionExecBase exprExecBaseLeft;
ExecExpression(exprExecResult, exprComparison.ExprLeft, out exprExecBaseLeft);
ExpressionExecBase exprExecBaseRight;
ExecExpression(exprExecResult, exprComparison.ExprRight, out exprExecBaseRight);
//---Are the operands boolean?
ExprExecValueBool exprExecValueLeftBool = exprExecBaseLeft as ExprExecValueBool;
if (exprExecValueLeftBool != null)
{
// decode the right operand, should be a bool value too
ExprExecValueBool exprExecValueRightBool = exprExecBaseRight as ExprExecValueBool;
if (exprExecValueRightBool == null)
{
// the type of both operands mismatch!
exprExecResult.AddErrorExec(ErrorCode.ExprComparisonOperandsTypeMismatchBoolExpected, "Position", exprComparison.ExprRight.Token.Position.ToString());
return(false);
}
ExprExecValueBool exprValueBoolResult = new ExprExecValueBool();
// is the operator Equals?
if (exprComparison.Operator == OperatorComparisonCode.Equals)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftBool.Value == exprExecValueRightBool.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator different?
if (exprComparison.Operator == OperatorComparisonCode.Different)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftBool.Value != exprExecValueRightBool.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// other operators are not allowed on the boolean type
exprExecResult.AddErrorExec(ErrorCode.ExprComparisonOperatorNotAllowedForBoolType, "Position", exprComparison.ExprLeft.Token.Position.ToString(), "Operator", exprComparison.Operator.ToString());
return(false);
}
//---Are the operands integer?
ExprExecValueInt exprExecValueLeftInt = exprExecBaseLeft as ExprExecValueInt;
if (exprExecValueLeftInt != null)
{
// decode the right operand, should be an int value too
ExprExecValueInt exprExecValueRightInt = exprExecBaseRight as ExprExecValueInt;
if (exprExecValueRightInt == null)
{
// the type of both operands mismatch!
exprExecResult.AddErrorExec(ErrorCode.ExprComparisonOperandsTypeMismatchIntExpected, "Position", exprComparison.ExprRight.Token.Position.ToString());
return(false);
}
ExprExecValueBool exprValueBoolResult = new ExprExecValueBool();
// is the operator Equals?
if (exprComparison.Operator == OperatorComparisonCode.Equals)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftInt.Value == exprExecValueRightInt.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator different?
if (exprComparison.Operator == OperatorComparisonCode.Different)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftInt.Value != exprExecValueRightInt.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator greater than?
if (exprComparison.Operator == OperatorComparisonCode.Greater)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftInt.Value > exprExecValueRightInt.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator lesser than?
if (exprComparison.Operator == OperatorComparisonCode.Less)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftInt.Value < exprExecValueRightInt.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator greater or equals than?
if (exprComparison.Operator == OperatorComparisonCode.GreaterEquals)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftInt.Value >= exprExecValueRightInt.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator lesser or equals than?
if (exprComparison.Operator == OperatorComparisonCode.LessEquals)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftInt.Value <= exprExecValueRightInt.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// other operators are not allowed on the boolean type (impossible to be there!)
exprExecResult.AddErrorExec(ErrorCode.ExprComparisonOperatorNotYetImplementedForIntType, "Position", exprComparison.ExprLeft.Token.Position.ToString(), "Operator", exprComparison.Operator.ToString());
return(false);
}
//---Are the operands double?
ExprExecValueDouble exprExecValueLeftDouble = exprExecBaseLeft as ExprExecValueDouble;
if (exprExecValueLeftDouble != null)
{
// decode the right operand, should be an int value too
ExprExecValueDouble exprExecValueRightDouble = exprExecBaseRight as ExprExecValueDouble;
if (exprExecValueRightDouble == null)
{
// the type of both operands mismatch!
exprExecResult.AddErrorExec(ErrorCode.ExprComparisonOperandsTypeMismatchDoubleExpected, "Position", exprComparison.ExprRight.Token.Position.ToString());
return(false);
}
// the result is always a bool (its a comparison)
ExprExecValueBool exprValueBoolResult = new ExprExecValueBool();
// is the operator Equals?
if (exprComparison.Operator == OperatorComparisonCode.Equals)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftDouble.Value == exprExecValueRightDouble.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator different?
if (exprComparison.Operator == OperatorComparisonCode.Different)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftDouble.Value != exprExecValueRightDouble.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator greater than?
if (exprComparison.Operator == OperatorComparisonCode.Greater)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftDouble.Value > exprExecValueRightDouble.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator lesser than?
if (exprComparison.Operator == OperatorComparisonCode.Less)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftDouble.Value < exprExecValueRightDouble.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator greater or equals than?
if (exprComparison.Operator == OperatorComparisonCode.GreaterEquals)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftDouble.Value >= exprExecValueRightDouble.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator lesser or equals than?
if (exprComparison.Operator == OperatorComparisonCode.LessEquals)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftDouble.Value <= exprExecValueRightDouble.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// other operators are not allowed on the boolean type (impossible to be there!)
exprExecResult.AddErrorExec(ErrorCode.ExprComparisonOperatorNotYetImplementedForDoubleType, "Position", exprComparison.ExprLeft.Token.Position.ToString(), "Operator", exprComparison.Operator.ToString());
return(false);
}
//---Are the operands string?
ExprExecValueString exprExecValueLeftString = exprExecBaseLeft as ExprExecValueString;
if (exprExecValueLeftString != null)
{
// decode the right operand, should be a bool value too
ExprExecValueString exprExecValueRightString = exprExecBaseRight as ExprExecValueString;
if (exprExecValueRightString == null)
{
// the type of both operands mismatch!
exprExecResult.AddErrorExec(ErrorCode.ExprComparisonOperandsTypeMismatchStringExpected, "Position", exprComparison.ExprRight.Token.Position.ToString());
return(false);
}
ExprExecValueBool exprValueBoolResult = new ExprExecValueBool();
// is the operator Equals?
if (exprComparison.Operator == OperatorComparisonCode.Equals)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftString.Value == exprExecValueRightString.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// is the operator different?
if (exprComparison.Operator == OperatorComparisonCode.Different)
{
// ok, execute the comparison
exprValueBoolResult.Value = exprExecValueLeftString.Value != exprExecValueRightString.Value;
exprExecBase = exprValueBoolResult;
return(true);
}
// other operators are not allowed on the boolean type
exprExecResult.AddErrorExec(ErrorCode.ExprComparisonOperatorNotAllowedForStringType, "Position", exprComparison.ExprLeft.Token.Position.ToString(), "Operator", exprComparison.Operator.ToString());
return(false);
}
// if reached, the operand type is not yet implemented (or unknowed)
exprExecResult.AddErrorExec(ErrorCode.ExprComparisonOperandTypeNotYetImplemented, "Position", exprComparison.ExprLeft.Token.Position.ToString(), "Token", exprExecBaseLeft.Expr.Token.ToString());
return(false);
}
/// <summary>
/// start the execution, analyze and return the list of variables to create.
/// todo: recréer un syntax tree, avec des valeurs!
///
/// -->Doit renvoyer comme résultat un objet de type ExprValueXXX, non?? (si pas d'erreur).
/// </summary>
/// <returns></returns>
private bool ExecExpression(ExecResult exprExecResult, ExpressionBase expr, out ExpressionExecBase exprExecBase)
{
exprExecBase = null;
//----is it a final operand (value, var or call function)?
ExprFinalOperand finalOperand = expr as ExprFinalOperand;
if (finalOperand != null)
{
return(ExecExpressionFinalOperand(exprExecResult, finalOperand, out exprExecBase));
}
//----is it a comparison expression?
ExprComparison exprComparison = expr as ExprComparison;
if (exprComparison != null)
{
// execute the expression, execute the right part, execute the left part, then exec the expr (as 2 value operands)
return(ExecExpressionComparison(exprExecResult, exprComparison, out exprExecBase));
}
//----is it a logical expression (bin/2 operands)?
ExprLogical exprLogical = expr as ExprLogical;
if (exprLogical != null)
{
return(ExecExpressionLogical(exprExecResult, exprLogical, out exprExecBase));
}
//----is it a NOT logical expression?
ExprLogicalNot exprLogicalNot = expr as ExprLogicalNot;
if (exprLogicalNot != null)
{
return(ExecExpressionLogicalNot(exprExecResult, exprLogicalNot, out exprExecBase));
}
//----is it a calculation expression?
ExprCalculation exprCalculation = expr as ExprCalculation;
if (exprCalculation != null)
{
// execute the expression, execute the right part, execute the left part, then exec the expr (as 2 value operands)
return(ExecExpressionCalculation(exprExecResult, exprCalculation, out exprExecBase));
}
//----is it function call?
ExprFunctionCall exprFunctionCall = expr as ExprFunctionCall;
if (exprFunctionCall != null)
{
return(ExecExpressionFunctionCall(exprExecResult, exprFunctionCall, out exprExecBase));
}
//----is it a setValue expression?
// todo: future
// todo: error, expression not yet implemented!!
exprExecResult.AddErrorExec(ErrorCode.ExpressionTypeNotYetImplemented, "Expr", expr.GetType().ToString());
return(false);
}