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Model and Output: Implement default method parameter values

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This commit is contained in:
Katy Coe
2019-11-05 20:09:13 +01:00
parent 6f53d87a55
commit 14a9c89804
5 changed files with 81 additions and 67 deletions
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127
Il2CppInspector/Il2CppInspector.cs
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@@ -37,6 +37,7 @@ namespace Il2CppInspector
public int[] NestedTypeIndices => Metadata.NestedTypeIndices;
public int[] AttributeTypeIndices => Metadata.AttributeTypeIndices;
public Dictionary<int, object> FieldDefaultValue { get; } = new Dictionary<int, object>();
public Dictionary<int, object> ParameterDefaultValue { get; } = new Dictionary<int, object>();
public List<long> FieldOffsets { get; }
public List<Il2CppType> TypeUsages => Binary.Types;
public Dictionary<string, Il2CppCodeGenModule> Modules => Binary.Modules;
@@ -45,75 +46,77 @@ namespace Il2CppInspector
// TODO: Finish all file access in the constructor and eliminate the need for this
public IFileFormatReader BinaryImage => Binary.Image;
private object getDefaultValue(int typeIndex, int dataIndex) {
// No default
if (dataIndex == -1)
return null;
// Get pointer in binary to default value
var pValue = Metadata.Header.fieldAndParameterDefaultValueDataOffset + dataIndex;
var type = TypeUsages[typeIndex];
// Default value is null
if (pValue == 0)
return null;
object value = null;
Metadata.Position = pValue;
switch (type.type) {
case Il2CppTypeEnum.IL2CPP_TYPE_BOOLEAN:
value = Metadata.ReadBoolean();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_U1:
case Il2CppTypeEnum.IL2CPP_TYPE_I1:
value = Metadata.ReadByte();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_CHAR:
// UTF-8 character assumed
value = BitConverter.ToChar(Metadata.ReadBytes(2), 0);
break;
case Il2CppTypeEnum.IL2CPP_TYPE_U2:
value = Metadata.ReadUInt16();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_I2:
value = Metadata.ReadInt16();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_U4:
value = Metadata.ReadUInt32();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_I4:
value = Metadata.ReadInt32();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_U8:
value = Metadata.ReadUInt64();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_I8:
value = Metadata.ReadInt64();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_R4:
value = Metadata.ReadSingle();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_R8:
value = Metadata.ReadDouble();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_STRING:
var uiLen = Metadata.ReadInt32();
value = Encoding.UTF8.GetString(Metadata.ReadBytes(uiLen));
break;
}
return value;
}
public Il2CppInspector(Il2CppBinary binary, Metadata metadata) {
// Store stream representations
Binary = binary;
Metadata = metadata;
// Get all field default values
foreach (var fdv in Metadata.FieldDefaultValues) {
// No default
if (fdv.dataIndex == -1) {
FieldDefaultValue.Add(fdv.fieldIndex, null);
continue;
}
foreach (var fdv in Metadata.FieldDefaultValues)
FieldDefaultValue.Add(fdv.fieldIndex, getDefaultValue(fdv.typeIndex, fdv.dataIndex));
// Get pointer in binary to default value
var pValue = Metadata.Header.fieldAndParameterDefaultValueDataOffset + fdv.dataIndex;
var type = TypeUsages[fdv.typeIndex];
// Default value is null
if (pValue == 0) {
FieldDefaultValue.Add(fdv.fieldIndex, null);
continue;
}
object value = null;
Metadata.Position = pValue;
switch (type.type) {
case Il2CppTypeEnum.IL2CPP_TYPE_BOOLEAN:
value = Metadata.ReadBoolean();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_U1:
case Il2CppTypeEnum.IL2CPP_TYPE_I1:
value = Metadata.ReadByte();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_CHAR:
// UTF-8 character assumed
value = BitConverter.ToChar(Metadata.ReadBytes(2), 0);
break;
case Il2CppTypeEnum.IL2CPP_TYPE_U2:
value = Metadata.ReadUInt16();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_I2:
value = Metadata.ReadInt16();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_U4:
value = Metadata.ReadUInt32();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_I4:
value = Metadata.ReadInt32();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_U8:
value = Metadata.ReadUInt64();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_I8:
value = Metadata.ReadInt64();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_R4:
value = Metadata.ReadSingle();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_R8:
value = Metadata.ReadDouble();
break;
case Il2CppTypeEnum.IL2CPP_TYPE_STRING:
var uiLen = Metadata.ReadInt32();
value = Encoding.UTF8.GetString(Metadata.ReadBytes(uiLen));
break;
}
FieldDefaultValue.Add(fdv.fieldIndex, value);
}
// Get all parameter default values
foreach (var pdv in Metadata.ParameterDefaultValues)
ParameterDefaultValue.Add(pdv.parameterIndex, getDefaultValue(pdv.typeIndex, pdv.dataIndex));
// Get all field offsets
if (Binary.FieldOffsets != null) {

4
Il2CppInspector/Metadata.cs
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@@ -24,6 +24,7 @@ namespace Il2CppInspector
public Il2CppParameterDefinition[] Params { get; }
public Il2CppFieldDefinition[] Fields { get; }
public Il2CppFieldDefaultValue[] FieldDefaultValues { get; }
public Il2CppParameterDefaultValue[] ParameterDefaultValues { get; }
public Il2CppPropertyDefinition[] Properties { get; }
public Il2CppEventDefinition[] Events { get; }
public Il2CppGenericContainer[] GenericContainers { get; }
@@ -98,6 +99,7 @@ namespace Il2CppInspector
Params = ReadArray<Il2CppParameterDefinition>(Header.parametersOffset, Header.parametersCount / Sizeof(typeof(Il2CppParameterDefinition)));
Fields = ReadArray<Il2CppFieldDefinition>(Header.fieldsOffset, Header.fieldsCount / Sizeof(typeof(Il2CppFieldDefinition)));
FieldDefaultValues = ReadArray<Il2CppFieldDefaultValue>(Header.fieldDefaultValuesOffset, Header.fieldDefaultValuesCount / Sizeof(typeof(Il2CppFieldDefaultValue)));
ParameterDefaultValues = ReadArray<Il2CppParameterDefaultValue>(Header.parameterDefaultValuesOffset, Header.parameterDefaultValuesCount / Sizeof(typeof(Il2CppParameterDefaultValue)));
Properties = ReadArray<Il2CppPropertyDefinition>(Header.propertiesOffset, Header.propertiesCount / Sizeof(typeof(Il2CppPropertyDefinition)));
Events = ReadArray<Il2CppEventDefinition>(Header.eventsOffset, Header.eventsCount / Sizeof(typeof(Il2CppEventDefinition)));
InterfaceUsageIndices = ReadArray<int>(Header.interfacesOffset, Header.interfacesCount / sizeof(int));
@@ -109,7 +111,7 @@ namespace Il2CppInspector
AttributeTypeIndices = ReadArray<int>(Header.attributeTypesOffset, Header.attributeTypesCount / sizeof(int));
AttributeTypeRanges = ReadArray<Il2CppCustomAttributeTypeRange>(Header.attributesInfoOffset, Header.attributesInfoCount / Sizeof(typeof(Il2CppCustomAttributeTypeRange)));
}
// TODO: ParameterDefaultValue, ParameterConstraints, MetadataUsage
// TODO: ParameterConstraints, MetadataUsage
// Get all string literals
Position = Header.stringOffset;

7
Il2CppInspector/MetadataClasses.cs
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@@ -254,6 +254,13 @@ namespace Il2CppInspector
public int typeIndex;
}
public class Il2CppParameterDefaultValue
{
public int parameterIndex;
public int typeIndex;
public int dataIndex;
}
public class Il2CppFieldDefinition
{
public int nameIndex;

3
Il2CppInspector/Reflection/MethodBase.cs
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@@ -160,7 +160,8 @@ namespace Il2CppInspector.Reflection
// Get C# syntax-friendly list of parameters
public string GetParametersString() =>
string.Join(", ", DeclaredParameters.Select(p => $"{p.CustomAttributes.ToString(inline: true).Replace("[ParamArray]", "params")}"
+ $"{p.GetModifierString()}{p.ParameterType.CSharpName} {p.Name}"));
+ $"{p.GetModifierString()}{p.ParameterType.CSharpName} {p.Name}"
+ (p.HasDefaultValue? " = " + p.DefaultValue.ToCSharpValue() : "")));
public string GetTypeParametersString() => GenericTypeParameters == null? "" :
"<" + string.Join(", ", GenericTypeParameters.Select(p => p.CSharpName)) + ">";

7
Il2CppInspector/Reflection/ParameterInfo.cs
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@@ -26,7 +26,7 @@ namespace Il2CppInspector.Reflection
public bool HasDefaultValue => (Attributes & ParameterAttributes.HasDefault) != 0;
// Default value for the parameter
public object DefaultValue => throw new NotImplementedException();
public object DefaultValue { get; }
public bool IsIn => (Attributes & ParameterAttributes.In) != 0;
public bool IsOptional => (Attributes & ParameterAttributes.Optional) != 0;
@@ -80,11 +80,12 @@ namespace Il2CppInspector.Reflection
if (Position == -1)
Attributes |= ParameterAttributes.Retval;
// TODO: DefaultValue/HasDefaultValue
// Default initialization value if present
if (pkg.ParameterDefaultValue.TryGetValue(paramIndex, out object variant))
DefaultValue = variant;
}
public string GetModifierString() =>
(IsOptional? "optional " : "") +
(IsOut? "out " : "");
}
}