Expand API functionality (#475)

Author: ds5678

Cpp2IL.Core/Model/Contexts/ConcreteGenericFieldAnalysisContext.cs

@@ -8,6 +8,10 @@ public class ConcreteGenericFieldAnalysisContext : FieldAnalysisContext
     public FieldAnalysisContext BaseFieldContext { get; }
     public override FieldAttributes DefaultAttributes => BaseFieldContext.DefaultAttributes;
     public override FieldAttributes? OverrideAttributes { get => BaseFieldContext.OverrideAttributes; set => BaseFieldContext.OverrideAttributes = value; }
+    public override object? DefaultConstantValue => BaseFieldContext.DefaultConstantValue;
+    public override object? OverrideConstantValue { get => BaseFieldContext.OverrideConstantValue; set => BaseFieldContext.OverrideConstantValue = value; }
+    public override byte[] DefaultStaticArrayInitialValue => BaseFieldContext.DefaultStaticArrayInitialValue;
+    public override byte[]? OverrideStaticArrayInitialValue { get => BaseFieldContext.OverrideStaticArrayInitialValue; set => BaseFieldContext.OverrideStaticArrayInitialValue = value; }
     public override TypeAnalysisContext DefaultFieldType { get; }
     public override string DefaultName => BaseFieldContext.DefaultName;
     public override string? OverrideName { get => BaseFieldContext.OverrideName; set => BaseFieldContext.OverrideName = value; }

Cpp2IL.Core/Model/Contexts/FieldAnalysisContext.cs

@@ -37,6 +37,12 @@ public class FieldAnalysisContext : HasCustomAttributesAndName, IFieldInfoProvid
 
     public bool IsStatic => (Attributes & FieldAttributes.Static) != 0;
 
+    public virtual object? DefaultConstantValue => BackingData?.Field.DefaultValue?.Value;
+
+    public virtual object? OverrideConstantValue { get; set; }
+
+    public object? ConstantValue => OverrideConstantValue ?? DefaultConstantValue;
+
     public int Offset => BackingData == null ? 0 : AppContext.Binary.GetFieldOffsetFromIndex(DeclaringType.Definition!.TypeIndex, BackingData.IndexInParent, BackingData.Field.FieldIndex, DeclaringType.Definition.IsValueType, IsStatic);
 
     public virtual TypeAnalysisContext DefaultFieldType => DeclaringType.DeclaringAssembly.ResolveIl2CppType(RawFieldType)
@@ -46,6 +52,12 @@ public class FieldAnalysisContext : HasCustomAttributesAndName, IFieldInfoProvid
 
     public TypeAnalysisContext FieldType => OverrideFieldType ?? DefaultFieldType;
 
+    public virtual byte[] DefaultStaticArrayInitialValue => BackingData?.Field.StaticArrayInitialValue ?? [];
+
+    public virtual byte[]? OverrideStaticArrayInitialValue { get; set; }
+
+    public byte[] StaticArrayInitialValue => OverrideStaticArrayInitialValue ?? DefaultStaticArrayInitialValue;
+
     public FieldAttributes Visibility
     {
         get

Cpp2IL.Core/Model/Contexts/MethodAnalysisContext.cs

@@ -62,6 +62,8 @@ public class MethodAnalysisContext : HasGenericParameters, IMethodInfoProvider
 
     public bool IsStatic => (Attributes & MethodAttributes.Static) != 0;
 
+    public bool IsVirtual => (Attributes & MethodAttributes.Virtual) != 0;
+
     protected override int CustomAttributeIndex => Definition?.customAttributeIndex ?? throw new("Subclasses of MethodAnalysisContext should override CustomAttributeIndex if they have custom attributes");
 
     public override AssemblyAnalysisContext CustomAttributeAssembly => DeclaringType?.DeclaringAssembly ?? throw new("Subclasses of MethodAnalysisContext should override CustomAttributeAssembly if they have custom attributes");

Cpp2IL.Core/Model/Contexts/TypeAnalysisContext.cs

@@ -120,6 +120,20 @@ public virtual Il2CppTypeEnum Type
         }
     }
 
+    public string DefaultFullName
+    {
+        get
+        {
+            if (DeclaringType != null)
+                return DeclaringType.DefaultFullName + "+" + DefaultName;
+
+            if (string.IsNullOrEmpty(DefaultNamespace))
+                return DefaultName;
+
+            return $"{DefaultNamespace}.{DefaultName}";
+        }
+    }
+
     public string FullName
     {
         get

Cpp2IL.Core/Utils/AsmResolver/AsmResolverAssemblyPopulator.cs

@@ -336,16 +336,16 @@ private static void CopyFieldsInType(ReferenceImporter importer, TypeAnalysisCon
 
             var managedField = new FieldDefinition(fieldContext.Name, (FieldAttributes)fieldContext.Attributes, fieldTypeSig);
 
-            if (fieldInfo != null)
-            {
-                //Field default values
-                if (managedField.HasDefault && fieldInfo.Field.DefaultValue?.Value is { } constVal)
-                    managedField.Constant = AsmResolverConstants.GetOrCreateConstant(constVal);
+            //Field default values
+            if (managedField.HasDefault && fieldContext.ConstantValue is { } constVal)
+                managedField.Constant = AsmResolverConstants.GetOrCreateConstant(constVal);
 
-                //Field Initial Values (used for allocation of Array Literals)
-                if (managedField.HasFieldRva)
-                    managedField.FieldRva = new DataSegment(fieldInfo.Field.StaticArrayInitialValue);
+            //Field Initial Values (used for allocation of Array Literals)
+            if (managedField.HasFieldRva)
+                managedField.FieldRva = new DataSegment(fieldContext.StaticArrayInitialValue);
 
+            if (fieldInfo != null)
+            {
                 if (ilTypeDefinition.IsExplicitLayout && !fieldContext.IsStatic)
                     //Copy field offset
                     managedField.FieldOffset = fieldInfo.FieldOffset;