private string[] GetCapturedLoopVariablesNames()
{
var capturedVariables = LambdaBlock.GetCapturedLoopVariables(this.Emitter, this.Context, this.Parameters);
if (capturedVariables == null)
{
return(null);
}
List <string> names = new List <string>();
foreach (var capturedVariable in capturedVariables)
{
if (this.Emitter.LocalsMap != null && this.Emitter.LocalsMap.ContainsKey(capturedVariable))
{
names.Add(this.RemoveReferencePart(this.Emitter.LocalsMap[capturedVariable]));
}
else if (this.Emitter.LocalsNamesMap != null && this.Emitter.LocalsNamesMap.ContainsKey(capturedVariable.Name))
{
names.Add(this.RemoveReferencePart(this.Emitter.LocalsNamesMap[capturedVariable.Name]));
}
else
{
names.Add(capturedVariable.Name);
}
}
return(names.ToArray());
}
public override void VisitAnonymousMethodExpression(AnonymousMethodExpression anonymousMethodExpression)
{
var capturedVariables = LambdaBlock.GetCapturedLoopVariables(this.Emitter, anonymousMethodExpression, anonymousMethodExpression.Parameters, true);
if (capturedVariables != null)
{
DirectionVariables.AddRange(capturedVariables);
}
base.VisitAnonymousMethodExpression(anonymousMethodExpression);
}
public override void VisitLambdaExpression(LambdaExpression lambdaExpression)
{
var capturedVariables = LambdaBlock.GetCapturedLoopVariables(this.Emitter, lambdaExpression, lambdaExpression.Parameters, true);
if (capturedVariables != null)
{
DirectionVariables.AddRange(capturedVariables);
}
base.VisitLambdaExpression(lambdaExpression);
}
internal static IVariable[] GetCapturedLoopVariables(IEmitter emitter, AstNode context, IEnumerable <ParameterDeclaration> parameters, bool excludeReadOnly = false)
{
var loop = LambdaBlock.GetOuterLoop(context);
if (loop == null)
{
return(null);
}
var loopVariablesAnalyzer = new LoopVariablesAnalyzer(emitter, excludeReadOnly);
loopVariablesAnalyzer.Analyze(loop);
var captureAnalyzer = new CaptureAnalyzer(emitter);
captureAnalyzer.Analyze(context, parameters.Select(p => p.Name));
return(captureAnalyzer.UsedVariables.Where(v => loopVariablesAnalyzer.Variables.Contains(v)).ToArray());
}