public string GetPropertyValue(string propertyName)
{
if (_properties.IsDynamicProperty(propertyName))
{
string currentState = (string)_state[propertyName];
// check for circular references
if (currentState == PropertyDictionary.Visiting)
{
// Currently visiting this node, so have a cycle
throw PropertyDictionary.CreateCircularException(propertyName, _visiting);
}
_visiting.Push(propertyName);
_state[propertyName] = PropertyDictionary.Visiting;
string propertyValue = _properties.Lookup(propertyName);
if (propertyValue == null)
{
throw new BuildException(string.Format(CultureInfo.InvariantCulture,
ResourceUtils.GetString("NA1053"), propertyName));
}
Location propertyLocation = Location.UnknownLocation;
// TODO - get the proper location of the property declaration
propertyValue = _properties.ExpandProperties(propertyValue,
propertyLocation, _state, _visiting);
_visiting.Pop();
_state[propertyName] = PropertyDictionary.Visited;
return(propertyValue);
}
else
{
string propertyValue = _properties.Lookup(propertyName);
if (propertyValue == null)
{
throw new BuildException(string.Format(CultureInfo.InvariantCulture,
ResourceUtils.GetString("NA1053"), propertyName));
}
return(propertyValue);
}
}
/// <summary>
/// Gets a value indicating whether the target should be executed.
/// </summary>
/// <value>
/// <see langword="true" /> if the target should be executed; otherwise,
/// <see langword="false" />.
/// </value>
public bool IfDefined(PropertyAccessor propertyAccesor)
{
// expand properties in condition
string expandedCondition = propertyAccesor.ExpandProperties(IfCondition, Location);
// if a condition is supplied, it should evaluate to a bool
if (!String.IsNullOrEmpty(expandedCondition))
{
try
{
return(Convert.ToBoolean(expandedCondition, CultureInfo.InvariantCulture));
}
catch (FormatException)
{
throw new BuildException(string.Format(CultureInfo.InvariantCulture,
ResourceUtils.GetString("NA1070"), expandedCondition), Location);
}
}
// no condition is supplied
return(true);
}