public override bool CheckSemantic(List <Error> errors, SymbolTable symbolTable)
{
//Check Operands
if (LeftOperand.CheckSemantic(errors, symbolTable) & RightOperand.CheckSemantic(errors, symbolTable))
{
//Check: ILType Equals
if (LeftOperand.ReturnType.IsEquivalent(RightOperand.ReturnType))
{
return(true);
}
string message = string.Format("Could not applied operation '{0}' between operands of types '{1}' and '{2}'",
Text, LeftOperand.ReturnType, RightOperand.ReturnType);
errors.Add(new Error(message, Line, CharPositionInLine));
}
ReturnType = TypeExpression.ErrorType;
return(false);
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
///check semantics al operando izquierdo
LeftOperand.CheckSemantic(symbolTable, errors);
///check semantics al operando derecho
RightOperand.CheckSemantic(symbolTable, errors);
///si alguno de los operandos evalúa de error este nodo también
if (Object.Equals(LeftOperand.NodeInfo, SemanticInfo.SemanticError) ||
Object.Equals(RightOperand.NodeInfo, SemanticInfo.SemanticError))
{
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
return;
}
//los operandos tienen que ser compatibles
if (!LeftOperand.NodeInfo.Type.IsCompatibleWith(RightOperand.NodeInfo.Type))
{
errors.Add(new CompileError
{
Line = LeftOperand.Line,
Column = LeftOperand.CharPositionInLine,
ErrorMessage = string.Format("Operand '{0}' cannot be applied to operands of type '{1}' and '{2}'", this.Text, LeftOperand.NodeInfo.Type.Name, RightOperand.NodeInfo.Type.Name),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
///seteamos la información del NodeInfo
NodeInfo.BuiltInType = BuiltInType.Int;
NodeInfo.Type = SemanticInfo.Int;
NodeInfo.ILType = typeof(int);
}