/// <summary>
/// Ejecuta un bucle while
/// </summary>
private async Task ExecuteWhileAsync(SentenceWhile sentence, CancellationToken cancellationToken)
{
if (sentence.Condition.Empty)
{
AddError("Cant find condition for while loop");
}
else
{
bool end = false;
// Ejecuta el bucle
while (!end && !Stopped)
{
VariableModel result = await ExecuteExpressionAsync(sentence.Condition, cancellationToken);
if (result != null)
{
if (result.Type != VariableModel.VariableType.Boolean || !(result.Value is bool resultLogical))
{
AddError("While condition result is not a logical value");
}
else if (resultLogical)
{
await ExecuteWithContextAsync(sentence.Sentences, cancellationToken);
}
else
{
end = true;
}
}
}
}
}
/// <summary>
/// Transforma una sentencia while
/// </summary>
private void TransformWhile(SentenceWhile sentence)
{
// Añade el while
AddSentence(string.Empty);
AddSentence("while " + TransformExpressions(sentence.Condition) + ":");
// Añade las sentencias hija
AddIndent();
Transform(sentence.Sentences);
RemoveIndent();
}
/// <summary>
/// Carga una sentencia While
/// </summary>
private SentenceBase LoadSentenceWhile(MLNode rootML, string pathBase)
{
SentenceWhile sentence = new SentenceWhile();
// Carga la condición y las sentencias
sentence.Condition = rootML.Attributes[TagCondition].Value;
sentence.Sentences.AddRange(LoadSentences(rootML.Nodes, pathBase));
// Devuelve la sentencia
return(sentence);
}
/// <summary>
/// Ejecuta un bucle while
/// </summary>
private void ExecuteWhile(SentenceWhile sentence)
{
if (string.IsNullOrWhiteSpace(sentence.Condition))
{
AddError("Cant find condition for while loop");
}
else
{
bool result = new Compiler.Interpreter().EvaluateCondition(Context, sentence.Condition, out string error);
if (!string.IsNullOrEmpty(error))
{
AddError(error);
}
else if (result)
{
ExecuteWithContext(sentence.Sentences);
}
}
}