public static CecilHelpers.DelegateProducingSequence AnalyzeForEachInvocationInstruction(MethodDefinition methodToAnalyze, Instruction withCodeInvocationInstruction)
{
var delegatePushingInstruction = CecilHelpers.FindInstructionThatPushedArg(methodToAnalyze, 1, withCodeInvocationInstruction);
var result = CecilHelpers.MatchesDelegateProducingPattern(methodToAnalyze, delegatePushingInstruction, CecilHelpers.DelegateProducingPattern.MatchSide.Start);
if (result == null)
{
// Make sure we aren't generating this lambdajob from a stored delegate
bool LivesInUniversalDelegatesNamespace(TypeReference type) => type.Namespace == typeof(UniversalDelegates.R <>).Namespace;
if ((delegatePushingInstruction.OpCode == OpCodes.Ldfld && LivesInUniversalDelegatesNamespace(((FieldReference)delegatePushingInstruction.Operand).FieldType) ||
(delegatePushingInstruction.IsLoadLocal(out var localIndex) && LivesInUniversalDelegatesNamespace(methodToAnalyze.Body.Variables[localIndex].VariableType)) ||
(delegatePushingInstruction.IsLoadArg(out var argIndex) &&
LivesInUniversalDelegatesNamespace(methodToAnalyze.Parameters[methodToAnalyze.HasThis ? (argIndex - 1) : argIndex].ParameterType))))
{
UserError.DC0044(methodToAnalyze, delegatePushingInstruction).Throw();
}
else if (((delegatePushingInstruction.OpCode == OpCodes.Call || delegatePushingInstruction.OpCode == OpCodes.Callvirt) &&
delegatePushingInstruction.Operand is MethodReference callMethod))
{
if (LivesInUniversalDelegatesNamespace(callMethod.ReturnType))
{
UserError.DC0044(methodToAnalyze, delegatePushingInstruction).Throw();
}
}
InternalCompilerError.DCICE002(methodToAnalyze, delegatePushingInstruction).Throw();
}
public static CecilHelpers.DelegateProducingSequence AnalyzeForEachInvocationInstruction(MethodDefinition methodToAnalyze, Instruction withCodeInvocationInstruction)
{
var delegatePushingInstruction = CecilHelpers.FindInstructionThatPushedArg(methodToAnalyze, 1, withCodeInvocationInstruction);
var result = CecilHelpers.MatchesDelegateProducingPattern(methodToAnalyze, delegatePushingInstruction, CecilHelpers.DelegateProducingPattern.MatchSide.Start);
if (result == null)
{
InternalCompilerError.DCICE002(methodToAnalyze, delegatePushingInstruction).Throw();
}
return(result);
}
static (Instruction, Instruction) FindClosureCreatingInstructions(MethodBody body, Instruction callInstruction)
{
body.EnsurePreviousAndNextAreSet();
var cursor = callInstruction;
while (cursor != null)
{
if ((cursor.OpCode == OpCodes.Ldftn) && cursor.Next?.OpCode == OpCodes.Newobj)
{
return(cursor, cursor.Next);
}
cursor = cursor.Previous;
}
InternalCompilerError.DCICE002(body.Method, callInstruction).Throw();
return(null, null);
}