private static string GetCapturedVariableFieldName(Symbol variable, ref int uniqueId)
{
if (IsThis(variable))
{
return(GeneratedNames.ThisProxyName());
}
var local = variable as LocalSymbol;
if ((object)local != null)
{
if (local.SynthesizedLocalKind == SynthesizedLocalKind.LambdaDisplayClass)
{
return(GeneratedNames.MakeLambdaDisplayClassStorageName(uniqueId++));
}
if (local.SynthesizedLocalKind == SynthesizedLocalKind.ExceptionFilterAwaitHoistedExceptionLocal)
{
return(GeneratedNames.MakeHoistedLocalFieldName(string.Empty, uniqueId++));
}
}
Debug.Assert(variable.Name != null);
return(variable.Name);
}
private SynthesizedFieldSymbolBase MakeHoistedLocalField(TypeMap TypeMap, LocalSymbol local, TypeSymbol type)
{
Debug.Assert(local.SynthesizedLocalKind == SynthesizedLocalKind.None ||
local.SynthesizedLocalKind == SynthesizedLocalKind.LambdaDisplayClass);
int index = nextLocalNumber++;
// Special Case: There's logic in the EE to recognize locals that have been captured by a lambda
// and would have been hoisted for the state machine. Basically, we just hoist the local containing
// the instance of the lambda display class and retain its original name (rather than using an
// iterator local name). See FUNCBRECEE::ImportIteratorMethodInheritedLocals.
string fieldName = (local.SynthesizedLocalKind == SynthesizedLocalKind.LambdaDisplayClass)
? GeneratedNames.MakeLambdaDisplayClassStorageName(index)
: GeneratedNames.MakeHoistedLocalFieldName(local.Name, index);
return(F.StateMachineField(TypeMap.SubstituteType(type), fieldName, index));
}