Files
FlaxEngine/Source/Tools/Flax.Build/Bindings/ClassStructInfo.cs
2023-01-10 15:29:37 +01:00

117 lines
4.3 KiB
C#

// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
using System;
using System.Collections.Generic;
using System.IO;
namespace Flax.Build.Bindings
{
/// <summary>
/// The native class/structure information for bindings generator.
/// </summary>
public abstract class ClassStructInfo : ApiTypeInfo
{
public AccessLevel Access;
public AccessLevel BaseTypeInheritance;
public bool IsTemplate;
public ClassStructInfo BaseType;
public List<InterfaceInfo> Interfaces;
public List<TypeInfo> Inheritance; // Data from parsing, used to interfaces and base type construct in Init
public List<FunctionInfo> Functions = new List<FunctionInfo>();
public override bool SkipGeneration => IsInBuild || IsTemplate;
public override void Init(Builder.BuildData buildData)
{
base.Init(buildData);
if (BaseType == null && Interfaces == null && Inheritance != null)
{
// Extract base class and interfaces from inheritance info
for (int i = 0; i < Inheritance.Count; i++)
{
var apiTypeInfo = BindingsGenerator.FindApiTypeInfo(buildData, Inheritance[i], Parent);
if (apiTypeInfo is InterfaceInfo interfaceInfo)
{
if (Interfaces == null)
Interfaces = new List<InterfaceInfo>();
Interfaces.Add(interfaceInfo);
}
else if (apiTypeInfo is ClassStructInfo otherInfo)
{
if (otherInfo == this)
throw new Exception($"Type '{Name}' inherits from itself.");
if (BaseType != null)
throw new Exception($"Invalid '{Name}' inheritance (only single base class is allowed for scripting types, excluding interfaces).");
BaseType = otherInfo;
}
}
}
BaseType?.EnsureInited(buildData);
}
public override void Write(BinaryWriter writer)
{
writer.Write((byte)Access);
writer.Write((byte)BaseTypeInheritance);
writer.Write(IsTemplate);
BindingsGenerator.Write(writer, BaseType);
BindingsGenerator.Write(writer, Inheritance);
BindingsGenerator.Write(writer, Functions);
base.Write(writer);
}
public override void Read(BinaryReader reader)
{
Access = (AccessLevel)reader.ReadByte();
BaseTypeInheritance = (AccessLevel)reader.ReadByte();
IsTemplate = reader.ReadBoolean();
BaseType = BindingsGenerator.Read(reader, BaseType);
Inheritance = BindingsGenerator.Read(reader, Inheritance);
Functions = BindingsGenerator.Read(reader, Functions);
base.Read(reader);
}
}
/// <summary>
/// The native class or interface information for bindings generator that contains virtual functions.
/// </summary>
public abstract class VirtualClassInfo : ClassStructInfo
{
internal HashSet<string> UniqueFunctionNames;
public override void Init(Builder.BuildData buildData)
{
base.Init(buildData);
foreach (var functionInfo in Functions)
ProcessAndValidate(functionInfo);
}
protected void ProcessAndValidate(FunctionInfo functionInfo)
{
// Ensure that methods have unique names for bindings
if (UniqueFunctionNames == null)
UniqueFunctionNames = new HashSet<string>();
int idx = 1;
functionInfo.UniqueName = functionInfo.Name;
while (UniqueFunctionNames.Contains(functionInfo.UniqueName))
functionInfo.UniqueName = functionInfo.Name + idx++;
UniqueFunctionNames.Add(functionInfo.UniqueName);
}
public abstract int GetScriptVTableSize(out int offset);
public abstract int GetScriptVTableOffset(VirtualClassInfo classInfo);
public override void AddChild(ApiTypeInfo apiTypeInfo)
{
apiTypeInfo.Namespace = null;
base.AddChild(apiTypeInfo);
}
}
}