public ReferenceCollection GetReferences(ITreeNode element, ReferenceCollection oldReferences)
{
if (ResolveUtil.CheckThatAllReferencesBelongToElement <UnityEventTargetReference>(oldReferences, element))
{
return(oldReferences);
}
if (!(element is IPlainScalarNode methodNameValue))
{
return(ReferenceCollection.Empty);
}
// E.g. element is the m_MethodName scalar value "ButtonClickedHandler" in this structure:
// m_OnClick:
// m_PersistentCalls:
// m_Calls:
// - m_Target: {fileID: 1870695363}
// m_MethodName: ButtonClickedHandler
// m_Mode: 3
// m_Arguments:
// m_ObjectArgument: {fileID: 0}
// m_ObjectArgumentAssemblyTypeName: UnityEngine.Object, UnityEngine
// m_IntArgument: 1
// m_FloatArgument: 0
// m_StringArgument:
// m_BoolArgument: 0
// m_CallState: 2
// m_TypeName: UnityEngine.UI.Button+ButtonClickedEvent, UnityEngine.UI, Version=1.0.0.0,
// Culture=neutral, PublicKeyToken=null
var methodNameMapEntry = BlockMappingEntryNavigator.GetByValue(methodNameValue);
var callMapNode = BlockMappingNodeNavigator.GetByEntrie(methodNameMapEntry);
var callsSequenceEntry = SequenceEntryNavigator.GetByValue(callMapNode);
var callsSequenceNode = BlockSequenceNodeNavigator.GetByEntrie(callsSequenceEntry);
var callsMapEntry = BlockMappingEntryNavigator.GetByValue(callsSequenceNode);
// callsMapEntry should be "m_Calls" (and contain a value that is a sequence node). If it's not null,
// everything else is also not null
if (callsMapEntry == null)
{
return(ReferenceCollection.Empty);
}
if (methodNameMapEntry.Key.MatchesPlainScalarText("m_MethodName") &&
callsMapEntry.Key.MatchesPlainScalarText("m_Calls"))
{
// If we have a guid, that means this event handler exists inside another asset. That asset might be
// a .dll, in which case we don't want to add a reference (the primary purpose of these references
// is to enable Find Usages of methods, not navigation *from* YAML). Or it might be e.g. a prefab.
// This would be a reference to a prefab that contains a MonoScript asset that has the method
// TODO: Create an index of other assets that we could target
var fileID = callMapNode.FindMapEntryBySimpleKey("m_Target")?.Value.AsFileID();
if (fileID != null && !fileID.IsNullReference && fileID.guid == null)
{
var reference = new UnityEventTargetReference(methodNameValue, fileID);
return(new ReferenceCollection(reference));
}
}
return(ReferenceCollection.Empty);
}
public ReferenceCollection GetReferences(ITreeNode element, ReferenceCollection oldReferences)
{
if (ResolveUtil.CheckThatAllReferencesBelongToElement <UnityEventTargetReference>(oldReferences, element))
{
return(oldReferences);
}
if (!(element is IPlainScalarNode methodNameValue))
{
return(ReferenceCollection.Empty);
}
// E.g. element is the m_MethodName scalar value "ButtonClickedHandler" in this structure:
// m_OnClick:
// m_PersistentCalls:
// m_Calls:
// - m_Target: {fileID: 1870695363}
// m_MethodName: ButtonClickedHandler
// m_Mode: 3
// m_Arguments:
// m_ObjectArgument: {fileID: 0}
// m_ObjectArgumentAssemblyTypeName: UnityEngine.Object, UnityEngine
// m_IntArgument: 1
// m_FloatArgument: 0
// m_StringArgument:
// m_BoolArgument: 0
// m_CallState: 2
// m_TypeName: UnityEngine.UI.Button+ButtonClickedEvent, UnityEngine.UI, Version=1.0.0.0,
// Culture=neutral, PublicKeyToken=null
var methodNameMapEntry = BlockMappingEntryNavigator.GetByContent(ContentNodeNavigator.GetByValue(methodNameValue));
var callMapNode = BlockMappingNodeNavigator.GetByEntrie(methodNameMapEntry);
var callsSequenceEntry = SequenceEntryNavigator.GetByValue(callMapNode);
var callsSequenceNode = BlockSequenceNodeNavigator.GetByEntrie(callsSequenceEntry);
var callsMapEntry = BlockMappingEntryNavigator.GetByContent(ContentNodeNavigator.GetByValue(callsSequenceNode));
// callsMapEntry should be "m_Calls" (and contain a value that is a sequence node). If it's not null,
// everything else is also not null
if (callsMapEntry == null)
{
return(ReferenceCollection.Empty);
}
if (methodNameMapEntry.Key.MatchesPlainScalarText("m_MethodName") &&
callsMapEntry.Key.MatchesPlainScalarText("m_Calls"))
{
var fileID = callMapNode.FindMapEntryBySimpleKey("m_Target")?.Content.Value.AsFileID();
if (fileID != null && !fileID.IsNullReference)
{
var text = callMapNode.Entries.FirstOrDefault(t => t.Key.MatchesPlainScalarText("m_Mode"))?.Content.Value
.GetPlainScalarText();
var argMode = EventHandlerArgumentMode.Unknown;
if (int.TryParse(text, out var mode))
{
if (1 <= mode && mode <= 6)
{
argMode = (EventHandlerArgumentMode)mode;
}
}
var arguments = callMapNode.Entries.FirstOrDefault(t => t.Key.MatchesPlainScalarText("m_Arguments"))?.Content.Value as IBlockMappingNode;
var typeNameRecord = arguments?.Entries.FirstOrDefault(t => t.Key.MatchesPlainScalarText("m_ObjectArgumentAssemblyTypeName"))?.Content.Value;
var type = typeNameRecord?.GetPlainScalarText()?.Split(',').FirstOrDefault();
if (type.IsNullOrEmpty() && mode == 1)
{
type = null;
}
var reference = new UnityEventTargetReference(methodNameValue, argMode, type, fileID);
return(new ReferenceCollection(reference));
}
}
return(ReferenceCollection.Empty);
}
public ReferenceCollection GetReferences(ITreeNode element, ReferenceCollection oldReferences)
{
if (ResolveUtil.CheckThatAllReferencesBelongToElement <UnityEventTargetReference>(oldReferences, element))
{
return(oldReferences);
}
if (!(element is IPlainScalarNode methodNameValue))
{
return(ReferenceCollection.Empty);
}
// E.g. element is the m_MethodName scalar value "ButtonClickedHandler" in this structure:
// m_OnClick:
// m_PersistentCalls:
// m_Calls:
// - m_Target: {fileID: 1870695363}
// m_MethodName: ButtonClickedHandler
// m_Mode: 3
// m_Arguments:
// m_ObjectArgument: {fileID: 0}
// m_ObjectArgumentAssemblyTypeName: UnityEngine.Object, UnityEngine
// m_IntArgument: 1
// m_FloatArgument: 0
// m_StringArgument:
// m_BoolArgument: 0
// m_CallState: 2
// m_TypeName: UnityEngine.UI.Button+ButtonClickedEvent, UnityEngine.UI, Version=1.0.0.0,
// Culture=neutral, PublicKeyToken=null
// Note that m_TypeName was removed in Unity 2018.4
var methodNameMapEntry = BlockMappingEntryNavigator.GetByContent(ContentNodeNavigator.GetByValue(methodNameValue));
var callMapNode = BlockMappingNodeNavigator.GetByEntrie(methodNameMapEntry);
var callsMapEntry = BlockMappingEntryNavigator.GetByContent(
ContentNodeNavigator.GetByValue(
BlockSequenceNodeNavigator.GetByEntrie(SequenceEntryNavigator.GetByValue(callMapNode))));
// callsMapEntry should be "m_Calls" (and contain a value that is a sequence node). If it's not null,
// everything else is also not null
if (callsMapEntry == null)
{
return(ReferenceCollection.Empty);
}
// Get the event type name, if it's serialised. This field was removed in Unity 2018.4, but remember that
// the serialised value will remain in the scene until it is re-saved.
// The only way to get the type name in Unity 2018.4+ is to get the type of the event (e.g. m_OnClick). This
// requires getting the type referenced in the m_Script serialised field, which might be in a referenced
// assembly, and could be arbitrarily deep in a custom class.
// The Event System has this problem, as the EventTrigger MonoBehaviour serialises a list of
// EventTrigger.Event instances, and it's EventTrigger.Event.callback that gives us the UnityEvent derived
// event type
// The only way to do this would be to resolve all types and fields between m_PersistentCalls and the "root"
// of the object, taking [FormerlySerialisedAs] into account
var persistentCallsMapNode = BlockMappingNodeNavigator.GetByEntrie(
BlockMappingEntryNavigator.GetByContent(
ContentNodeNavigator.GetByValue(BlockMappingNodeNavigator.GetByEntrie(callsMapEntry))));
var eventTypeName = persistentCallsMapNode?.FindMapEntryBySimpleKey("m_TypeName")?.Content?.Value
?.GetPlainScalarText();
if (methodNameMapEntry.Key.MatchesPlainScalarText("m_MethodName") &&
callsMapEntry.Key.MatchesPlainScalarText("m_Calls"))
{
var fileID = callMapNode.FindMapEntryBySimpleKey("m_Target")?.Content.Value.AsFileID();
if (fileID != null && !fileID.IsNullReference)
{
var modeText = callMapNode.FindMapEntryBySimpleKey("m_Mode")?.Content.Value.GetPlainScalarText();
var argMode = EventHandlerArgumentMode.EventDefined;
if (int.TryParse(modeText, out var mode))
{
if (1 <= mode && mode <= 6)
{
argMode = (EventHandlerArgumentMode)mode;
}
}
var arguments = callMapNode.FindMapEntryBySimpleKey("m_Arguments")?.Content.Value as IBlockMappingNode;
var argumentTypeName = arguments.FindMapEntryBySimpleKey("m_ObjectArgumentAssemblyTypeName")?.Content
.Value.GetPlainScalarText();
var type = argumentTypeName?.Split(',').FirstOrDefault();
if (argMode == EventHandlerArgumentMode.EventDefined)
{
type = eventTypeName?.Split(',').FirstOrDefault();
}
else if (argMode == EventHandlerArgumentMode.Void)
{
type = null;
}
var reference = new UnityEventTargetReference(methodNameValue, argMode, type, fileID);
return(new ReferenceCollection(reference));
}
}
return(ReferenceCollection.Empty);
}