public static string StringInterpolation(string template, IReadonlyContext context)
{
dynamic expandoContext = new ExpandoObject();
foreach (var property in context.Properties)
{
if (property is IParameterDescriptor parameter)
{
((IDictionary <string, object>)expandoContext)[parameter.Key] = context.TryGet(parameter, out var val) ? val : parameter.DefaultValue;
}
}
var stringBuilder = new StringBuilder();
var offset = 0;
void OffsetTo(int newOffset, bool write)
{
if (newOffset <= offset)
{
return;
}
if (write)
{
stringBuilder.Append(template.Substring(offset, newOffset - offset));
}
offset = newOffset;
}
for (;;)
{
var open = template.IndexOf("{{", offset, StringComparison.Ordinal);
if (open == -1)
{
break;
}
OffsetTo(open, true);
var close = template.IndexOf("}}", open + 2, StringComparison.Ordinal);
if (close == -1)
{
OffsetTo(open + 2, true);
continue;
}
OffsetTo(close + 2, false);
var script = template.Substring(open + 2, close - open - 2);
try
{
stringBuilder.Append(DslExpressionFactory.Create(script).Evaluate((IDictionary <string, object>)expandoContext));
}
catch (Exception e)
{
Logger.Warn("GetInterpolatedString", e, "template", template, "script", script);
throw new UserException($"Failed to evaluate script: '{script}', template: '{template}'", e);
}
}
OffsetTo(template.Length, true);
return(stringBuilder.ToString());
}
public static string GetFormattedSessionDescriptor(this SessionConfig.Experiment experimentPart)
{
var sessionName = experimentPart.SessionDescriptor;
dynamic expandoContext = new ExpandoObject();
if (experimentPart.Params.Params != null && App.Instance.Registries.Registry <PluginExperiment>().LookUp(experimentPart.Params.Id, out var exp))
{
var context = exp.DeserializeParams(experimentPart.Params.Params);
foreach (var group in exp.Factory.ParameterGroups)
{
foreach (var parameter in @group.Parameters)
{
((IDictionary <string, object>)expandoContext)[parameter.Key] = context.TryGet(parameter, out var val) ? val : parameter.DefaultValue;
}
}
}
var stringBuilder = new StringBuilder();
var offset = 0;
void OffsetTo(int newOffset, bool write)
{
if (newOffset <= offset)
{
return;
}
if (write)
{
stringBuilder.Append(sessionName.Substring(offset, newOffset - offset));
}
offset = newOffset;
}
while (true)
{
var open = sessionName.IndexOf("{{", offset, StringComparison.Ordinal);
if (open == -1)
{
break;
}
OffsetTo(open, true);
var close = sessionName.IndexOf("}}", open + 2, StringComparison.Ordinal);
if (close == -1)
{
OffsetTo(open + 2, true);
continue;
}
OffsetTo(close + 2, false);
var script = sessionName.Substring(open + 2, close - open - 2);
try
{
stringBuilder.Append(DslExpressionFactory.Create(script).Evaluate((IDictionary <string, object>)expandoContext));
}
catch (Exception e)
{
Logger.Warn("GetFormattedSessionDescriptor", e, "sessionName", sessionName, "script", script);
throw new UserException($"Failed to evaluate script: '{script}', session name: '{sessionName}'", e);
}
}
OffsetTo(sessionName.Length, true);
return(stringBuilder.ToString());
}
