/// <summary>
/// It initializes a new instance of the class.
/// </summary>
/// <param name="fieldNumber">
/// It's the number of the field this formatter formats/parse.
/// </param>
/// <param name="expression">
/// It's the expression to evaluate, based in the result <paramref name="trueFormatter"/>
/// or <paramref name="falseFormatter" /> are used in the formatting/parsing of a message.
/// </param>
/// <param name="trueFormatter">
/// It's the formatter to be used when <paramref name="expression"/> is true.
/// </param>
/// <param name="falseFormatter">
/// It's the formatter to be used when <paramref name="expression"/> is false.
/// </param>
/// <param name="description">
/// It's the description of the field formatter.
/// </param>
public ConditionalFieldFormatter(int fieldNumber, string expression,
FieldFormatter trueFormatter, FieldFormatter falseFormatter,
string description) : base(fieldNumber, description)
{
if (trueFormatter == null)
{
throw new ArgumentNullException("trueFormatter");
}
if (falseFormatter == null)
{
throw new ArgumentNullException("falseFormatter");
}
_expression = expression;
_trueFormatter = trueFormatter;
_falseFormatter = falseFormatter;
Tokenizer tokenizer = new Tokenizer(
new StringReader(_expression));
SemanticParser sp = new SemanticParser();
object result = null;
try {
result = sp.yyparse(tokenizer);
} catch (Exception ex) {
throw new ExpressionCompileException(ex.Message, tokenizer.LastParsedTokenIndex);
}
_compiledExpression = result as IBooleanExpression;
if (_compiledExpression == null)
{
throw new ApplicationException("Unknown result from expression.");
}
_evaluator = this;
}
/// <summary>
/// It initializes a new instance of the class.
/// </summary>
/// <param name="fieldNumber">
/// It's the number of the field this formatter formats/parse.
/// </param>
/// <param name="evaluator">
/// It's the evaluator which decides which field formatter must be used between
/// <paramref name="trueFormatter"/> and <paramref name="falseFormatter" />,
/// in the formatting/parsing of a message.
/// </param>
/// <param name="trueFormatter">
/// It's the formatter to be used when <paramref name="expression"/> is true.
/// </param>
/// <param name="falseFormatter">
/// It's the formatter to be used when <paramref name="expression"/> is false.
/// </param>
/// <param name="description">
/// It's the description of the field formatter.
/// </param>
public ConditionalFieldFormatter(int fieldNumber,
IConditionalFieldEvaluator evaluator,
FieldFormatter trueFormatter, FieldFormatter falseFormatter,
string description) : base(fieldNumber, description)
{
if (evaluator == null)
{
throw new ArgumentNullException("evaluator");
}
if (trueFormatter == null)
{
throw new ArgumentNullException("trueFormatter");
}
if (falseFormatter == null)
{
throw new ArgumentNullException("falseFormatter");
}
_evaluator = evaluator;
_trueFormatter = trueFormatter;
_falseFormatter = falseFormatter;
}
/// <summary>
/// It initializes a new instance of the class.
/// </summary>
/// <param name="fieldNumber">
/// It's the number of the field this formatter formats/parse.
/// </param>
/// <param name="evaluator">
/// It's the evaluator which decides which field formatter must be used between
/// <paramref name="trueFormatter"/> and <paramref name="falseFormatter" />,
/// in the formatting/parsing of a message.
/// </param>
/// <param name="trueFormatter">
/// It's the formatter to be used when <paramref name="expression"/> is true.
/// </param>
/// <param name="falseFormatter">
/// It's the formatter to be used when <paramref name="expression"/> is false.
/// </param>
public ConditionalFieldFormatter(int fieldNumber,
IConditionalFieldEvaluator evaluator,
FieldFormatter trueFormatter, FieldFormatter falseFormatter) :
this(fieldNumber, evaluator, trueFormatter, falseFormatter, string.Empty)
{
}
