private void SaveDefaultInterpreter(string id)
{
using (var interpreterOptions = Registry.CurrentUser.CreateSubKey(DefaultInterpreterOptionsCollection, true)) {
if (id == null)
{
interpreterOptions.SetValue(DefaultInterpreterSetting, "");
}
else
{
Debug.Assert(!InterpreterRegistryConstants.IsNoInterpretersFactory(id));
interpreterOptions.SetValue(DefaultInterpreterSetting, id);
}
}
}
private void SaveDefaultInterpreterId()
{
var id = _defaultInterpreterId;
BeginSuppressDefaultInterpreterChangeEvent();
try {
using (var interpreterOptions = Registry.CurrentUser.CreateSubKey(DefaultInterpreterOptionsCollection, true)) {
if (string.IsNullOrEmpty(id))
{
interpreterOptions.DeleteValue(DefaultInterpreterSetting, false);
}
else
{
Debug.Assert(!InterpreterRegistryConstants.IsNoInterpretersFactory(id));
interpreterOptions.SetValue(DefaultInterpreterSetting, id);
}
}
} finally {
EndSuppressDefaultInterpreterChangeEvent();
}
}
/// <summary>
/// Checks whether the configuration can be run and throws the
/// appropriate exception if it cannot.
/// </summary>
/// <exception cref="ArgumentNullException">
/// config is null and parameterName is provided.
/// </exception>
/// <exception cref="NullReferenceException">
/// config is null and parameterName is not provided.
/// </exception>
/// <exception cref="NoInterpretersException">
/// config is the sentinel used when no environments are installed.
/// </exception>
/// <exception cref="FileNotFoundException">
/// config's InterpreterPath does not exist on disk.
/// </exception>
public static void ThrowIfNotRunnable(this InterpreterConfiguration config, string parameterName = null)
{
if (config == null)
{
if (string.IsNullOrEmpty(parameterName))
{
throw new NullReferenceException();
}
else
{
throw new ArgumentNullException(parameterName);
}
}
else if (InterpreterRegistryConstants.IsNoInterpretersFactory(config.Id))
{
throw new NoInterpretersException();
}
else if (!File.Exists(config.InterpreterPath))
{
throw new FileNotFoundException(config.InterpreterPath ?? "(null)");
}
}
/// <summary>
/// Returns true if the configuration can be run. This checks whether
/// the configured InterpreterPath value is an actual file.
/// </summary>
public static bool IsRunnable(this InterpreterConfiguration config)
{
return(config != null &&
!InterpreterRegistryConstants.IsNoInterpretersFactory(config.Id) &&
File.Exists(config.InterpreterPath));
}
