private void ProcessExtensionMethodCalls(MethodDefinition method, AutoPropertyToBackingFieldMap autoPropertyToBackingFieldMap)
{
var processor = new ExtensionMethodProcessor(_logger, _symbolReader, method, autoPropertyToBackingFieldMap);
processor.ProcessExtensionMethodCalls("SetBackingField", pi => Instruction.Create(OpCodes.Stfld, pi.BackingField));
processor.ProcessExtensionMethodCalls("SetProperty", pi => Instruction.Create(OpCodes.Call, pi.Property.SetMethod));
}
private void BypassAutoPropertySetters([NotNull] MethodDefinition method, [NotNull] AutoPropertyToBackingFieldMap autoPropertyToBackingFieldMap)
{
// ReSharper disable once PossibleNullReferenceException
var instructions = method.Body.Instructions;
// ReSharper disable once PossibleNullReferenceException
for (var index = 0; index < instructions.Count; index++)
{
var instruction = instructions[index];
// ReSharper disable once AssignNullToNotNullAttribute
if (!instruction.IsPropertySetterCall(out string propertyName))
{
continue;
}
if (!autoPropertyToBackingFieldMap.TryGetValue(propertyName, out var propertyInfo))
{
continue;
}
_logger.LogInfo($"Replace setter of property {propertyName} in method {method.FullName} with backing field assignment.");
instructions[index] = Instruction.Create(OpCodes.Stfld, propertyInfo.BackingField);
}
}
public ExtensionMethodProcessor(ILogger logger, ISymbolReader?symbolReader, MethodDefinition method, AutoPropertyToBackingFieldMap autoPropertyToBackingFieldMap)
{
_logger = logger;
_method = method;
_autoPropertyToBackingFieldMap = autoPropertyToBackingFieldMap;
_instructionSequences = new InstructionSequences(method.Body.Instructions, method.ReadSequencePoints(symbolReader));
}
private void ProcessExtensionMethodCalls([NotNull] MethodDefinition method, [NotNull] AutoPropertyToBackingFieldMap autoPropertyToBackingFieldMap)
{
var processor = new ExtensionMethodProcessor(_logger, _symbolReader, method, autoPropertyToBackingFieldMap);
// ReSharper disable PossibleNullReferenceException
processor.ProcessExtensionMethodCalls("SetBackingField", pi => Instruction.Create(OpCodes.Stfld, pi.BackingField));
processor.ProcessExtensionMethodCalls("SetProperty", pi => Instruction.Create(OpCodes.Call, pi.Property.SetMethod));
// ReSharper restore PossibleNullReferenceException
}
public ExtensionMethodProcessor([NotNull] ILogger logger, [CanBeNull] ISymbolReader symbolReader, [NotNull] MethodDefinition method, [NotNull] AutoPropertyToBackingFieldMap autoPropertyToBackingFieldMap)
{
_logger = logger;
_method = method;
_autoPropertyToBackingFieldMap = autoPropertyToBackingFieldMap;
Debug.Assert(method.Body?.Instructions != null, "method.Body.Instructions != null");
_instructionSequences = new InstructionSequences(method.Body.Instructions, method.ReadSequencePoints(symbolReader));
}
internal void Execute()
{
var allTypes = _moduleDefinition.GetTypes();
// ReSharper disable once AssignNullToNotNullAttribute
var allClasses = allTypes
.Where(x => x != null && x.IsClass && (x.BaseType != null));
try
{
foreach (var classDefinition in allClasses)
{
var shouldBypassAutoPropertySetters = classDefinition.ShouldBypassAutoPropertySettersInConstructors()
?? _moduleDefinition.Assembly.ShouldBypassAutoPropertySettersInConstructors()
?? false;
var autoPropertyToBackingFieldMap = new AutoPropertyToBackingFieldMap(classDefinition);
// ReSharper disable once AssignNullToNotNullAttribute
// ReSharper disable once PossibleNullReferenceException
var allMethods = classDefinition.Methods.Where(method => method.HasBody);
foreach (var method in allMethods)
{
if (method.IsConstructor && shouldBypassAutoPropertySetters)
{
BypassAutoPropertySetters(method, autoPropertyToBackingFieldMap);
}
ProcessExtensionMethodCalls(method, autoPropertyToBackingFieldMap);
}
}
}
catch (Exception ex)
{
_logger.LogError("Unhandled exception. Weaving aborted. The most probable reason is that the module has no or incompatible debug information (.pdb)");
_logger.LogDebug(ex.ToString());
}
}
private void BypassAutoPropertySetters(MethodDefinition method, AutoPropertyToBackingFieldMap autoPropertyToBackingFieldMap)
{
var instructions = method.Body.Instructions;
for (var index = 0; index < instructions.Count; index++)
{
var instruction = instructions[index];
if (!instruction.IsPropertySetterCall(out string?propertyName) || propertyName == null)
{
continue;
}
if (!autoPropertyToBackingFieldMap.TryGetValue(propertyName, out var propertyInfo))
{
continue;
}
_logger.LogInfo($"Replace setter of property {propertyName} in method {method.FullName} with backing field assignment.");
instructions[index] = Instruction.Create(OpCodes.Stfld, propertyInfo.BackingField);
}
}