Initial Commit

2026-03-16 14:38:46 +02:00
commit b8f7327a21
2327 changed files with 253610 additions and 0 deletions
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+using System;
+using ModestTree;
+
+namespace Zenject
+{
+    public class BindSignalFromBinder<TObject, TSignal>
+    {
+        readonly BindStatement _bindStatement;
+        readonly Func<TObject, Action<TSignal>> _methodGetter;
+        readonly DiContainer _container;
+        readonly SignalBindingBindInfo _signalBindInfo;
+
+        public BindSignalFromBinder(
+            SignalBindingBindInfo signalBindInfo, BindStatement bindStatement, Func<TObject, Action<TSignal>> methodGetter,
+            DiContainer container)
+        {
+            _signalBindInfo = signalBindInfo;
+            _bindStatement = bindStatement;
+            _methodGetter = methodGetter;
+            _container = container;
+        }
+
+        public SignalCopyBinder FromResolve()
+        {
+            return From(x => x.FromResolve().AsCached());
+        }
+
+        public SignalCopyBinder FromResolveAll()
+        {
+            return From(x => x.FromResolveAll().AsCached());
+        }
+
+        public SignalCopyBinder FromNew()
+        {
+            return From(x => x.FromNew().AsCached());
+        }
+
+        public SignalCopyBinder From(Action<ConcreteBinderGeneric<TObject>> objectBindCallback)
+        {
+            Assert.That(!_bindStatement.HasFinalizer);
+            _bindStatement.SetFinalizer(new NullBindingFinalizer());
+
+            var objectLookupId = Guid.NewGuid();
+
+            // Very important here that we use NoFlush otherwise the main binding will be finalized early
+            var objectBinder = _container.BindNoFlush<TObject>().WithId(objectLookupId);
+
+            objectBindCallback(objectBinder);
+
+            // We need to do this to make sure SignalCallbackWithLookupWrapper does not have
+            // generic types to avoid AOT issues
+            Func<object, Action<object>> methodGetterMapper =
+                obj => s => _methodGetter((TObject)obj)((TSignal)s);
+
+            var wrapperBinder = _container.Bind<IDisposable>()
+                .To<SignalCallbackWithLookupWrapper>()
+                .AsCached()
+                .WithArguments(_signalBindInfo, typeof(TObject), objectLookupId, methodGetterMapper)
+                .NonLazy();
+
+            var copyBinder = new SignalCopyBinder( wrapperBinder.BindInfo);
+            // Make sure if they use one of the Copy/Move methods that it applies to both bindings
+            copyBinder.AddCopyBindInfo(objectBinder.BindInfo);
+            return copyBinder;
+        }
+    }
+}
@@ -0,0 +1,13 @@
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@@ -0,0 +1,20 @@
+using System;
+using ModestTree;
+
+namespace Zenject
+{
+    public class BindSignalIdToBinder<TSignal> : BindSignalToBinder<TSignal>
+    {
+        public BindSignalIdToBinder(DiContainer container, SignalBindingBindInfo signalBindInfo)
+            : base(container, signalBindInfo)
+        {
+        }
+
+        public BindSignalToBinder<TSignal> WithId(object identifier)
+        {
+            SignalBindInfo.Identifier = identifier;
+            return this;
+        }
+    }
+}
+
@@ -0,0 +1,13 @@
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+timeCreated: 1538401230
+licenseType: Pro
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@@ -0,0 +1,64 @@
+using System;
+using ModestTree;
+
+namespace Zenject
+{
+    public class BindSignalToBinder<TSignal>
+    {
+        DiContainer _container;
+        BindStatement _bindStatement;
+        SignalBindingBindInfo _signalBindInfo;
+
+        public BindSignalToBinder(DiContainer container, SignalBindingBindInfo signalBindInfo)
+        {
+            _container = container;
+
+            _signalBindInfo = signalBindInfo;
+            // This will ensure that they finish the binding
+            _bindStatement = container.StartBinding();
+        }
+
+        protected SignalBindingBindInfo SignalBindInfo
+        {
+            get { return _signalBindInfo; }
+        }
+
+        public SignalCopyBinder ToMethod(Action<TSignal> callback)
+        {
+            Assert.That(!_bindStatement.HasFinalizer);
+            _bindStatement.SetFinalizer(new NullBindingFinalizer());
+
+            var bindInfo = _container.Bind<IDisposable>()
+                .To<SignalCallbackWrapper>()
+                .AsCached()
+                // Note that there's a reason we don't just make SignalCallbackWrapper have a generic
+                // argument for signal type - because when using struct type signals it throws
+                // exceptions on AOT platforms
+                .WithArguments(_signalBindInfo, (Action<object>)(o => callback((TSignal)o)))
+                .NonLazy().BindInfo;
+
+            return new SignalCopyBinder(bindInfo);
+        }
+
+        public SignalCopyBinder ToMethod(Action callback)
+        {
+            return ToMethod(signal => callback());
+        }
+
+        public BindSignalFromBinder<TObject, TSignal> ToMethod<TObject>(Action<TObject, TSignal> handler)
+        {
+            return ToMethod<TObject>(x => (Action<TSignal>)(s => handler(x, s)));
+        }
+
+        public BindSignalFromBinder<TObject, TSignal> ToMethod<TObject>(Func<TObject, Action> handlerGetter)
+        {
+            return ToMethod<TObject>(x => (Action<TSignal>)(s => handlerGetter(x)()));
+        }
+
+        public BindSignalFromBinder<TObject, TSignal> ToMethod<TObject>(Func<TObject, Action<TSignal>> handlerGetter)
+        {
+            return new BindSignalFromBinder<TObject, TSignal>(
+                _signalBindInfo, _bindStatement, handlerGetter, _container);
+        }
+    }
+}
@@ -0,0 +1,13 @@
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+timeCreated: 1521288279
+licenseType: Free
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@@ -0,0 +1,53 @@
+using System;
+
+namespace Zenject
+{
+    // Note that there's a reason we don't just have a generic
+    // argument for signal type - because when using struct type signals it throws
+    // exceptions on AOT platforms
+    public class SignalCallbackWithLookupWrapper : IDisposable
+    {
+        readonly DiContainer _container;
+        readonly SignalBus _signalBus;
+        readonly Guid _lookupId;
+        readonly Func<object, Action<object>> _methodGetter;
+        readonly Type _objectType;
+        readonly Type _signalType;
+        readonly object _identifier;
+
+        public SignalCallbackWithLookupWrapper(
+            SignalBindingBindInfo signalBindInfo,
+            Type objectType,
+            Guid lookupId,
+            Func<object, Action<object>> methodGetter,
+            SignalBus signalBus,
+            DiContainer container)
+        {
+            _objectType = objectType;
+            _signalType = signalBindInfo.SignalType;
+            _identifier = signalBindInfo.Identifier;
+            _container = container;
+            _methodGetter = methodGetter;
+            _signalBus = signalBus;
+            _lookupId = lookupId;
+
+            signalBus.SubscribeId(signalBindInfo.SignalType, _identifier, OnSignalFired);
+        }
+
+        void OnSignalFired(object signal)
+        {
+            var objects = _container.ResolveIdAll(_objectType, _lookupId);
+
+            for (int i = 0; i < objects.Count; i++)
+            {
+                _methodGetter(objects[i])(signal);
+            }
+        }
+
+        public void Dispose()
+        {
+            _signalBus.UnsubscribeId(_signalType, _identifier, OnSignalFired);
+        }
+    }
+}
+
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@@ -0,0 +1,38 @@
+using System;
+
+namespace Zenject
+{
+    // Note that there's a reason we don't just have a generic
+    // argument for signal type - because when using struct type signals it throws
+    // exceptions on AOT platforms
+    public class SignalCallbackWrapper : IDisposable
+    {
+        readonly SignalBus _signalBus;
+        readonly Action<object> _action;
+        readonly Type _signalType;
+        readonly object _identifier;
+
+        public SignalCallbackWrapper(
+            SignalBindingBindInfo bindInfo,
+            Action<object> action,
+            SignalBus signalBus)
+        {
+            _signalType = bindInfo.SignalType;
+            _identifier = bindInfo.Identifier;
+            _signalBus = signalBus;
+            _action = action;
+
+            signalBus.SubscribeId(bindInfo.SignalType, _identifier, OnSignalFired);
+        }
+
+        void OnSignalFired(object signal)
+        {
+            _action(signal);
+        }
+
+        public void Dispose()
+        {
+            _signalBus.UnsubscribeId(_signalType, _identifier, OnSignalFired);
+        }
+    }
+}
@@ -0,0 +1,13 @@
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+timeCreated: 1521289018
+licenseType: Free
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+timeCreated: 1521277428
+licenseType: Free
+DefaultImporter:
+  externalObjects: {}
+  userData: 
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@@ -0,0 +1,24 @@
+namespace Zenject
+{
+    [NoReflectionBaking]
+    public class DeclareSignalAsyncTickPriorityCopyBinder : SignalTickPriorityCopyBinder
+    {
+        public DeclareSignalAsyncTickPriorityCopyBinder(SignalDeclarationBindInfo signalBindInfo)
+            : base(signalBindInfo)
+        {
+        }
+
+        public SignalTickPriorityCopyBinder RunAsync()
+        {
+            SignalBindInfo.RunAsync = true;
+            return this;
+        }
+
+        public SignalCopyBinder RunSync()
+        {
+            SignalBindInfo.RunAsync = false;
+            return this;
+        }
+    }
+}
+
@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: b81f91889a4f58f45a186d306ec19a76
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+licenseType: Free
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@@ -0,0 +1,20 @@
+namespace Zenject
+{
+    [NoReflectionBaking]
+    public class DeclareSignalIdRequireHandlerAsyncTickPriorityCopyBinder : DeclareSignalRequireHandlerAsyncTickPriorityCopyBinder
+    {
+        public DeclareSignalIdRequireHandlerAsyncTickPriorityCopyBinder(
+            SignalDeclarationBindInfo signalBindInfo)
+            : base(signalBindInfo)
+        {
+        }
+
+        public DeclareSignalRequireHandlerAsyncTickPriorityCopyBinder WithId(object identifier)
+        {
+            SignalBindInfo.Identifier = identifier;
+            return this;
+        }
+    }
+}
+
+
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+licenseType: Free
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@@ -0,0 +1,31 @@
+namespace Zenject
+{
+    [NoReflectionBaking]
+    public class DeclareSignalRequireHandlerAsyncTickPriorityCopyBinder : DeclareSignalAsyncTickPriorityCopyBinder
+    {
+        public DeclareSignalRequireHandlerAsyncTickPriorityCopyBinder(
+            SignalDeclarationBindInfo signalBindInfo)
+            : base(signalBindInfo)
+        {
+        }
+
+        public DeclareSignalAsyncTickPriorityCopyBinder RequireSubscriber()
+        {
+            SignalBindInfo.MissingHandlerResponse = SignalMissingHandlerResponses.Throw;
+            return this;
+        }
+
+        public DeclareSignalAsyncTickPriorityCopyBinder OptionalSubscriber()
+        {
+            SignalBindInfo.MissingHandlerResponse = SignalMissingHandlerResponses.Ignore;
+            return this;
+        }
+
+        public DeclareSignalAsyncTickPriorityCopyBinder OptionalSubscriberWithWarning()
+        {
+            SignalBindInfo.MissingHandlerResponse = SignalMissingHandlerResponses.Warn;
+            return this;
+        }
+    }
+}
+
@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 7cc67ec88be096e4a89e01987d671cb9
+timeCreated: 1529046908
+licenseType: Free
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@@ -0,0 +1,24 @@
+using System;
+
+namespace Zenject
+{
+    [NoReflectionBaking]
+    public class SignalBindingBindInfo
+    {
+        public SignalBindingBindInfo(Type signalType)
+        {
+            SignalType = signalType;
+        }
+
+        public object Identifier
+        {
+            get; set;
+        }
+
+        public Type SignalType
+        {
+            get; private set;
+        }
+    }
+}
+
@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 054ec2c1e404fd04f99dcab4d9012db2
+timeCreated: 1538401117
+licenseType: Pro
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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@@ -0,0 +1,38 @@
+using System;
+
+namespace Zenject
+{
+    [NoReflectionBaking]
+    public class SignalDeclarationBindInfo
+    {
+        public SignalDeclarationBindInfo(Type signalType)
+        {
+            SignalType = signalType;
+        }
+
+        public object Identifier
+        {
+            get; set;
+        }
+
+        public Type SignalType
+        {
+            get; private set;
+        }
+
+        public bool RunAsync
+        {
+            get; set;
+        }
+
+        public int TickPriority
+        {
+            get; set;
+        }
+
+        public SignalMissingHandlerResponses MissingHandlerResponse
+        {
+            get; set;
+        }
+    }
+}
@@ -0,0 +1,13 @@
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+timeCreated: 1521277428
+licenseType: Free
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+  icon: {instanceID: 0}
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@@ -0,0 +1,61 @@
+using System.Collections.Generic;
+
+namespace Zenject
+{
+    [NoReflectionBaking]
+    public class SignalCopyBinder
+    {
+        readonly List<BindInfo> _bindInfos;
+
+        public SignalCopyBinder()
+        {
+            _bindInfos = new List<BindInfo>();
+        }
+
+        public SignalCopyBinder(BindInfo bindInfo)
+        {
+            _bindInfos = new List<BindInfo>
+            {
+                bindInfo
+            };
+        }
+
+        // This is used in cases where you have multiple bindings that depend on each other so should
+        // be inherited together
+        public void AddCopyBindInfo(BindInfo bindInfo)
+        {
+            _bindInfos.Add(bindInfo);
+        }
+
+        public void CopyIntoAllSubContainers()
+        {
+            SetInheritanceMethod(BindingInheritanceMethods.CopyIntoAll);
+        }
+
+        // Only copy the binding into children and not grandchildren
+        public void CopyIntoDirectSubContainers()
+        {
+            SetInheritanceMethod(BindingInheritanceMethods.CopyDirectOnly);
+        }
+
+        // Do not apply the binding on the current container
+        public void MoveIntoAllSubContainers()
+        {
+            SetInheritanceMethod(BindingInheritanceMethods.MoveIntoAll);
+        }
+
+        // Do not apply the binding on the current container
+        public void MoveIntoDirectSubContainers()
+        {
+            SetInheritanceMethod(BindingInheritanceMethods.MoveDirectOnly);
+        }
+
+        void SetInheritanceMethod(BindingInheritanceMethods method)
+        {
+            for (int i = 0; i < _bindInfos.Count; i++)
+            {
+                _bindInfos[i].BindingInheritanceMethod = method;
+            }
+        }
+    }
+}
@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 604fe2d23cc79c7498be851b6970af1b
+timeCreated: 1521266917
+licenseType: Free
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,57 @@
+using System;
+namespace Zenject
+{
+    public static class SignalExtensions
+    {
+        public static SignalDeclarationBindInfo CreateDefaultSignalDeclarationBindInfo(DiContainer container, Type signalType)
+        {
+            return new SignalDeclarationBindInfo(signalType)
+            {
+                RunAsync = container.Settings.Signals.DefaultSyncMode == SignalDefaultSyncModes.Asynchronous,
+                MissingHandlerResponse = container.Settings.Signals.MissingHandlerDefaultResponse,
+                TickPriority = container.Settings.Signals.DefaultAsyncTickPriority
+            };
+        }
+
+        public static DeclareSignalIdRequireHandlerAsyncTickPriorityCopyBinder DeclareSignal(this DiContainer container, Type type)
+        {
+            var signalBindInfo = CreateDefaultSignalDeclarationBindInfo(container, type);
+
+            var bindInfo = container.Bind<SignalDeclaration>().AsCached()
+                .WithArguments(signalBindInfo).WhenInjectedInto(typeof(SignalBus), typeof(SignalDeclarationAsyncInitializer)).BindInfo;
+
+            var signalBinder = new DeclareSignalIdRequireHandlerAsyncTickPriorityCopyBinder(signalBindInfo);
+            signalBinder.AddCopyBindInfo(bindInfo);
+            return signalBinder;
+        }
+
+        public static DeclareSignalIdRequireHandlerAsyncTickPriorityCopyBinder DeclareSignal<TSignal>(this DiContainer container)
+        {
+            return container.DeclareSignal(typeof(TSignal));
+        }
+
+        public static DeclareSignalIdRequireHandlerAsyncTickPriorityCopyBinder DeclareSignalWithInterfaces<TSignal>(this DiContainer container)
+        {
+            Type type = typeof(TSignal);
+
+            var declaration = container.DeclareSignal(type);
+
+            Type[] interfaces = type.GetInterfaces();
+            int numOfInterfaces = interfaces.Length;
+            for (int i = 0; i < numOfInterfaces; i++)
+            {
+                container.DeclareSignal(interfaces[i]);
+            }
+
+            return declaration;
+        }
+
+        public static BindSignalIdToBinder<TSignal> BindSignal<TSignal>(this DiContainer container)
+        {
+            var signalBindInfo = new SignalBindingBindInfo(typeof(TSignal));
+
+            return new BindSignalIdToBinder<TSignal>(container, signalBindInfo);
+        }
+    }
+}
+
@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: ca6f0ad40fd1abc4a8fb5e8a50134aa4
+timeCreated: 1521266917
+licenseType: Free
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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+  assetBundleVariant: 
@@ -0,0 +1,25 @@
+namespace Zenject
+{
+    [NoReflectionBaking]
+    public class SignalTickPriorityCopyBinder : SignalCopyBinder
+    {
+        public SignalTickPriorityCopyBinder(
+            SignalDeclarationBindInfo signalBindInfo)
+        {
+            SignalBindInfo = signalBindInfo;
+        }
+
+        protected SignalDeclarationBindInfo SignalBindInfo
+        {
+            get; private set;
+        }
+
+        public SignalCopyBinder WithTickPriority(int priority)
+        {
+            SignalBindInfo.TickPriority = priority;
+            SignalBindInfo.RunAsync = true;
+            return this;
+        }
+    }
+}
+
@@ -0,0 +1,13 @@
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+timeCreated: 1529046908
+licenseType: Free
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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@@ -0,0 +1,182 @@
+using System;
+using System.Collections.Generic;
+using ModestTree;
+#if ZEN_SIGNALS_ADD_UNIRX
+using UniRx;
+#endif
+
+namespace Zenject
+{
+    public class SignalDeclaration : ITickable, IDisposable
+    {
+        readonly List<SignalSubscription> _subscriptions = new List<SignalSubscription>();
+        readonly List<object> _asyncQueue = new List<object>();
+        readonly BindingId _bindingId;
+        readonly SignalMissingHandlerResponses _missingHandlerResponses;
+        readonly bool _isAsync;
+        readonly ZenjectSettings.SignalSettings _settings;
+
+#if ZEN_SIGNALS_ADD_UNIRX
+        readonly Subject<object> _stream = new Subject<object>();
+#endif
+
+        public SignalDeclaration(
+            SignalDeclarationBindInfo bindInfo,
+            [InjectOptional]
+            ZenjectSettings zenjectSettings)
+        {
+            zenjectSettings = zenjectSettings ?? ZenjectSettings.Default;
+            _settings = zenjectSettings.Signals ?? ZenjectSettings.SignalSettings.Default;
+
+            _bindingId = new BindingId(bindInfo.SignalType, bindInfo.Identifier);
+            _missingHandlerResponses = bindInfo.MissingHandlerResponse;
+            _isAsync = bindInfo.RunAsync;
+            TickPriority = bindInfo.TickPriority;
+        }
+
+#if ZEN_SIGNALS_ADD_UNIRX
+        public IObservable<object> Stream
+        {
+            get { return _stream; }
+        }
+#endif
+
+		public List<SignalSubscription> Subscriptions => _subscriptions;
+
+        public int TickPriority
+        {
+            get; private set;
+        }
+
+        public bool IsAsync
+        {
+            get { return _isAsync; }
+        }
+
+        public BindingId BindingId
+        {
+            get { return _bindingId; }
+        }
+
+        public void Dispose()
+        {
+            if (_settings.RequireStrictUnsubscribe)
+            {
+                Assert.That(_subscriptions.IsEmpty(),
+                    "Found {0} signal handlers still added to declaration {1}", _subscriptions.Count, _bindingId);
+            }
+            else
+            {
+                // We can't rely entirely on the destruction order in Unity because of
+                // the fact that OnDestroy is completely unpredictable.
+                // So if you have a GameObjectContext at the root level in your scene, then it
+                // might be destroyed AFTER the SceneContext.  So if you have some signal declarations
+                // in the scene context, they might get disposed before some of the subscriptions
+                // so in this case you need to disconnect from the subscription so that it doesn't
+                // try to remove itself after the declaration has been destroyed
+                for (int i = 0; i < _subscriptions.Count; i++)
+                {
+                    _subscriptions[i].OnDeclarationDespawned();
+                }
+            }
+        }
+
+        public void Fire(object signal)
+        {
+            Assert.That(signal.GetType().DerivesFromOrEqual(_bindingId.Type));
+
+            if (_isAsync)
+            {
+                _asyncQueue.Add(signal);
+            }
+            else
+            {
+                // Cache the callback list to allow handlers to be added from within callbacks
+                using (var block = DisposeBlock.Spawn())
+                {
+                    var subscriptions = block.SpawnList<SignalSubscription>();
+                    subscriptions.AddRange(_subscriptions);
+                    FireInternal(subscriptions, signal);
+                }
+            }
+        }
+
+        void FireInternal(List<SignalSubscription> subscriptions, object signal)
+        {
+            if (subscriptions.IsEmpty()
+#if ZEN_SIGNALS_ADD_UNIRX
+                && !_stream.HasObservers
+#endif
+                )
+            {
+                if (_missingHandlerResponses == SignalMissingHandlerResponses.Warn)
+                {
+                    Log.Warn("Fired signal '{0}' but no subscriptions found!  If this is intentional then either add OptionalSubscriber() to the binding or change the default in ZenjectSettings", signal.GetType());
+                }
+                else if (_missingHandlerResponses == SignalMissingHandlerResponses.Throw)
+                {
+                    throw Assert.CreateException(
+                        "Fired signal '{0}' but no subscriptions found!  If this is intentional then either add OptionalSubscriber() to the binding or change the default in ZenjectSettings", signal.GetType());
+                }
+            }
+
+            for (int i = 0; i < subscriptions.Count; i++)
+            {
+                var subscription = subscriptions[i];
+
+                // This is a weird check for the very rare case where an Unsubscribe is called
+                // from within the same callback (see TestSignalsAdvanced.TestSubscribeUnsubscribeInsideHandler)
+                if (_subscriptions.Contains(subscription))
+                {
+                    subscription.Invoke(signal);
+                }
+            }
+
+#if ZEN_SIGNALS_ADD_UNIRX
+            _stream.OnNext(signal);
+#endif
+        }
+
+        public void Tick()
+        {
+            Assert.That(_isAsync);
+
+            if (!_asyncQueue.IsEmpty())
+            {
+                // Cache the callback list to allow handlers to be added from within callbacks
+                using (var block = DisposeBlock.Spawn())
+                {
+                    var subscriptions = block.SpawnList<SignalSubscription>();
+                    subscriptions.AddRange(_subscriptions);
+
+                    // Cache the signals so that if the signal is fired again inside the handler that it
+                    // is not executed until next frame
+                    var signals = block.SpawnList<object>();
+                    signals.AddRange(_asyncQueue);
+
+                    _asyncQueue.Clear();
+
+                    for (int i = 0; i < signals.Count; i++)
+                    {
+                        FireInternal(subscriptions, signals[i]);
+                    }
+                }
+            }
+        }
+
+        public void Add(SignalSubscription subscription)
+        {
+            Assert.That(!_subscriptions.Contains(subscription));
+            _subscriptions.Add(subscription);
+        }
+
+        public void Remove(SignalSubscription subscription)
+        {
+            _subscriptions.RemoveWithConfirm(subscription);
+        }
+
+        public class Factory : PlaceholderFactory<SignalDeclarationBindInfo, SignalDeclaration>
+        {
+        }
+    }
+}
@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 1246007cc9cfbc04cb83b9bde4c34995
+timeCreated: 1521266917
+licenseType: Free
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,82 @@
+using System;
+using System.Linq;
+using ModestTree;
+
+namespace Zenject
+{
+    public class SignalSubscription : IDisposable, IPoolable<Action<object>, SignalDeclaration>
+    {
+        readonly Pool _pool;
+
+        Action<object> _callback;
+        SignalDeclaration _declaration;
+        BindingId _signalId;
+
+        public SignalSubscription(Pool pool)
+        {
+            _pool = pool;
+
+            SetDefaults();
+        }
+
+        public BindingId SignalId
+        {
+            get { return _signalId; }
+        }
+
+        public void OnSpawned(
+            Action<object> callback, SignalDeclaration declaration)
+        {
+            Assert.IsNull(_callback);
+            _callback = callback;
+            _declaration = declaration;
+            // Cache this in case OnDeclarationDespawned is called
+            _signalId = declaration.BindingId;
+
+            declaration.Add(this);
+        }
+
+        public void OnDespawned()
+        {
+            if (_declaration != null)
+            {
+                _declaration.Remove(this);
+            }
+
+            SetDefaults();
+        }
+
+        void SetDefaults()
+        {
+            _callback = null;
+            _declaration = null;
+            _signalId = new BindingId();
+        }
+
+        public void Dispose()
+        {
+            // Allow calling this twice since signals automatically unsubscribe in SignalBus.LateDispose
+            // and so this causes issues if users also unsubscribe in a MonoBehaviour OnDestroy on a
+            // root game object
+            if (!_pool.InactiveItems.Contains(this))
+            {
+                _pool.Despawn(this);
+            }
+        }
+
+        // See comment in SignalDeclaration for why this exists
+        public void OnDeclarationDespawned()
+        {
+            _declaration = null;
+        }
+
+        public void Invoke(object signal)
+        {
+            _callback(signal);
+        }
+
+        public class Pool : PoolableMemoryPool<Action<object>, SignalDeclaration, SignalSubscription>
+        {
+        }
+    }
+}
@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 26affab6a482d904580cce7f9f1a94f4
+timeCreated: 1521266917
+licenseType: Free
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,65 @@
+using System;
+using System.Diagnostics;
+
+namespace Zenject
+{
+    [DebuggerStepThrough]
+    public struct SignalSubscriptionId : IEquatable<SignalSubscriptionId>
+    {
+        BindingId _signalId;
+        object _callback;
+
+        public SignalSubscriptionId(BindingId signalId, object callback)
+        {
+            _signalId = signalId;
+            _callback = callback;
+        }
+
+        public BindingId SignalId
+        {
+            get { return _signalId; }
+        }
+
+        public object Callback
+        {
+            get { return _callback; }
+        }
+
+        public override int GetHashCode()
+        {
+            unchecked // Overflow is fine, just wrap
+            {
+                int hash = 17;
+                hash = hash * 29 + _signalId.GetHashCode();
+                hash = hash * 29 + _callback.GetHashCode();
+                return hash;
+            }
+        }
+
+        public override bool Equals(object that)
+        {
+            if (that is SignalSubscriptionId)
+            {
+                return Equals((SignalSubscriptionId)that);
+            }
+
+            return false;
+        }
+
+        public bool Equals(SignalSubscriptionId that)
+        {
+            return Equals(_signalId, that._signalId)
+                && Equals(Callback, that.Callback);
+        }
+
+        public static bool operator == (SignalSubscriptionId left, SignalSubscriptionId right)
+        {
+            return left.Equals(right);
+        }
+
+        public static bool operator != (SignalSubscriptionId left, SignalSubscriptionId right)
+        {
+            return !left.Equals(right);
+        }
+    }
+}
@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 2ebf6df7998e59b4393ef46553665ba2
+timeCreated: 1521266917
+licenseType: Free
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: