/// <summary>
/// Initializes a new instance of the <see cref="Expression"/> class
/// by parsing specified property expression string.
/// </summary>
/// <param name="expression">Property expression to parse.</param>
internal static IExpression ParseProperty(string expression)
{
if (StringUtils.HasText(expression))
{
ExpressionLexer lexer = new ExpressionLexer(new StringReader(expression));
ExpressionParser parser = new SpringExpressionParser(lexer);
try
{
parser.property();
}
catch (TokenStreamRecognitionException ex)
{
throw new SyntaxErrorException(ex.recog.Message, ex.recog.getLine(), ex.recog.getColumn(), expression);
}
return((IExpression)parser.getAST());
}
else
{
return(new Expression());
}
}
/// <summary>
/// Returns MemberInfo for the specified property or field
/// </summary>
/// <param name="propertyOrFieldName">The name of the property or field to search for.</param>
/// <returns>The <see cref="PropertyInfo"/> or <see cref="FieldInfo"/> for the specified property or field.</returns>
/// <exception cref="FatalObjectException">If <paramref name="propertyOrFieldName"/> does not resolve to a property or field.</exception>
private MemberInfo GetPropertyOrFieldInfo(string propertyOrFieldName)
{
if (StringUtils.IsNullOrEmpty(propertyOrFieldName))
{
throw new FatalObjectException("Can't find property or field info for null or zero length property name.");
}
try
{
IExpression propertyExpression = GetPropertyExpression(propertyOrFieldName);
if (propertyExpression is PropertyOrFieldNode)
{
return(((PropertyOrFieldNode)propertyExpression).GetMemberInfo(this.wrappedObject));
}
else if (propertyExpression is IndexerNode)
{
return(((IndexerNode)propertyExpression).GetPropertyInfo(this.wrappedObject, null));
}
else if (propertyExpression is Expression)
{
return(((Expression)propertyExpression).GetPropertyInfo(this.wrappedObject, null));
}
else
{
throw new FatalObjectException("'" + propertyOrFieldName + "' is not a valid property or field expression.");
}
}
catch (RecognitionException e)
{
throw new FatalObjectException("Failed to parse property or field name '" + propertyOrFieldName + "'.", e);
}
catch (TokenStreamRecognitionException e)
{
throw new FatalObjectException("Failed to parse property or field name '" + propertyOrFieldName + "'.", e);
}
}