3335 维护scene配置

client_Wu Xijin

2019-01-16 d53a782e2fd91ffc47dad0dd5a080ee451a351b7

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using System;
using UnityEditor.MemoryProfiler;
using System.Collections.Generic;
using System.Linq;
 
namespace MemoryProfilerWindow
{
    static class TypeTools
    {
        public enum FieldFindOptions 
        { 
            OnlyInstance, 
            OnlyStatic 
        }
 
        static public IEnumerable<FieldDescription> AllFieldsOf (TypeDescription typeDescription, TypeDescription[] typeDescriptions, FieldFindOptions findOptions)
        {
            if (typeDescription.isArray)
                yield break;
            
            if (findOptions != FieldFindOptions.OnlyStatic && typeDescription.baseOrElementTypeIndex != -1 && !typeDescription.isValueType) 
            {
                var baseTypeDescription = typeDescriptions [typeDescription.baseOrElementTypeIndex];
                foreach(var field in AllFieldsOf(baseTypeDescription, typeDescriptions, findOptions))
                    yield return field;
            }
 
            foreach (var field in typeDescription.fields) 
            { 
                if (!FieldMatchesOptions(field, findOptions)) 
                    continue; 
 
                if (field.typeIndex == typeDescription.typeIndex && typeDescription.isValueType) 
                { 
                    // this happens in primitive types like System.Single, which is a weird type that has a field of its own type. 
                    continue; 
                } 
 
                if (field.offset == -1) 
                { 
                    // this is how we encode TLS fields. We don't support TLS fields yet. 
                    continue; 
                } 
 
                yield return field; 
            } 
        }
 
        static bool FieldMatchesOptions(FieldDescription field, FieldFindOptions options) 
        { 
            if (field.isStatic && options == FieldFindOptions.OnlyStatic) 
                return true; 
            if (!field.isStatic && options == FieldFindOptions.OnlyInstance) 
                return true; 
 
            return false; 
 
        }
    }
}