/// <summary>
/// Ejecuta una sentencia condicional
/// </summary>
private async Task ExecuteIfAsync(SentenceIf sentence, CancellationToken cancellationToken)
{
if (sentence.Condition.Empty)
{
AddError("Cant find condition for if sentence");
}
else
{
VariableModel result = await ExecuteExpressionAsync(sentence.Condition, cancellationToken);
if (result != null)
{
if (result.Type != VariableModel.VariableType.Boolean || !(result.Value is bool resultLogical))
{
AddError("If condition result is not a logical value");
}
else
{
if (resultLogical && !sentence.SentencesThen.Empty)
{
await ExecuteWithContextAsync(sentence.SentencesThen, cancellationToken);
}
else if (!resultLogical && !sentence.SentencesElse.Empty)
{
await ExecuteWithContextAsync(sentence.SentencesElse, cancellationToken);
}
}
}
else
{
AddError("Cant execute if condition");
}
}
}
/// <summary>
/// Transforma una sentencia if
/// </summary>
private void TransformIf(SentenceIf sentence)
{
// Añade la sentencia if
AddSentence(string.Empty);
AddSentence("if " + TransformExpressions(sentence.Condition) + ":");
// Añade las sentencias hija
AddIndent();
Transform(sentence.SentencesThen);
RemoveIndent();
// Añade el else
if (sentence.SentencesElse.Count > 0)
{
// Añade la sentencia else
AddSentence("else:");
// Añade las sentencias hija
AddIndent();
Transform(sentence.SentencesElse);
RemoveIndent();
}
}
/// <summary>
/// Carga una sentencia If
/// </summary>
private SentenceBase LoadSentenceIf(MLNode rootML, string pathBase)
{
SentenceIf sentence = new SentenceIf();
// Carga la condición
sentence.Condition = rootML.Attributes[TagCondition].Value;
// Carga las sentencias de la parte then y else
foreach (MLNode nodeML in rootML.Nodes)
{
switch (nodeML.Name)
{
case TagThen:
sentence.SentencesThen.AddRange(LoadSentences(nodeML.Nodes, pathBase));
break;
case TagElse:
sentence.SentencesElse.AddRange(LoadSentences(nodeML.Nodes, pathBase));
break;
}
}
// Devuelve la sentencia
return(sentence);
}
/// <summary>
/// Ejecuta una sentencia condicional
/// </summary>
private void ExecuteIf(SentenceIf sentence)
{
if (string.IsNullOrWhiteSpace(sentence.Condition))
{
AddError("Cant find condition for if sentence");
}
else
{
bool result = new Compiler.Interpreter().EvaluateCondition(Context, sentence.Condition, out string error);
if (!string.IsNullOrEmpty(error))
{
AddError(error);
}
else if (result && sentence.SentencesThen.Count > 0)
{
ExecuteWithContext(sentence.SentencesThen);
}
else if (!result && sentence.SentencesElse.Count > 0)
{
ExecuteWithContext(sentence.SentencesElse);
}
}
}
