225 lines
11 KiB
C#
225 lines
11 KiB
C#
using System;
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using Microsoft.CodeAnalysis;
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namespace Godot.SourceGenerators
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{
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public static class MarshalUtils
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{
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public class TypeCache
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{
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public INamedTypeSymbol GodotObjectType { get; }
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public INamedTypeSymbol GodotGenericDictionary { get; }
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public INamedTypeSymbol GodotGenericArray { get; }
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public INamedTypeSymbol IDictionary { get; }
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public INamedTypeSymbol ICollection { get; }
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public INamedTypeSymbol GenericIDictionary { get; }
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public INamedTypeSymbol SystemGenericDictionary { get; }
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public INamedTypeSymbol SystemGenericList { get; }
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public TypeCache(GeneratorExecutionContext context)
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{
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INamedTypeSymbol GetTypeByMetadataNameOrThrow(string fullyQualifiedMetadataName)
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{
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return context.Compilation.GetTypeByMetadataName(fullyQualifiedMetadataName) ??
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throw new InvalidOperationException("Type not found: " + fullyQualifiedMetadataName);
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}
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GodotObjectType = GetTypeByMetadataNameOrThrow("Godot.Object");
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GodotGenericDictionary = GetTypeByMetadataNameOrThrow("Godot.Collections.Dictionary`2");
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GodotGenericArray = GetTypeByMetadataNameOrThrow("Godot.Collections.Array`1");
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IDictionary = GetTypeByMetadataNameOrThrow("System.Collections.IDictionary");
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ICollection = GetTypeByMetadataNameOrThrow("System.Collections.ICollection");
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GenericIDictionary = GetTypeByMetadataNameOrThrow("System.Collections.Generic.IDictionary`2");
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SystemGenericDictionary = GetTypeByMetadataNameOrThrow("System.Collections.Generic.Dictionary`2");
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SystemGenericList = GetTypeByMetadataNameOrThrow("System.Collections.Generic.List`1");
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}
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}
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public static MarshalType? ConvertManagedTypeToVariantType(ITypeSymbol type, TypeCache typeCache)
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{
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var specialType = type.SpecialType;
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switch (specialType)
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{
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case SpecialType.System_Boolean:
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return MarshalType.Boolean;
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case SpecialType.System_Char:
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return MarshalType.Char;
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case SpecialType.System_SByte:
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return MarshalType.SByte;
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case SpecialType.System_Int16:
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return MarshalType.Int16;
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case SpecialType.System_Int32:
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return MarshalType.Int32;
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case SpecialType.System_Int64:
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return MarshalType.Int64;
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case SpecialType.System_Byte:
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return MarshalType.Byte;
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case SpecialType.System_UInt16:
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return MarshalType.UInt16;
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case SpecialType.System_UInt32:
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return MarshalType.UInt32;
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case SpecialType.System_UInt64:
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return MarshalType.UInt64;
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case SpecialType.System_Single:
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return MarshalType.Single;
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case SpecialType.System_Double:
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return MarshalType.Double;
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case SpecialType.System_String:
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return MarshalType.String;
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case SpecialType.System_Object:
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return MarshalType.SystemObject;
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case SpecialType.System_ValueType:
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{
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if (type.ContainingAssembly.Name == "GodotSharp" &&
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type.ContainingNamespace.Name == "Godot")
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{
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return type switch
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{
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{ Name: "Vector2" } => MarshalType.Vector2,
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{ Name: "Vector2i" } => MarshalType.Vector2i,
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{ Name: "Rect2" } => MarshalType.Rect2,
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{ Name: "Rect2i" } => MarshalType.Rect2i,
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{ Name: "Transform2D" } => MarshalType.Transform2D,
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{ Name: "Vector3" } => MarshalType.Vector3,
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{ Name: "Vector3i" } => MarshalType.Vector3i,
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{ Name: "Basis" } => MarshalType.Basis,
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{ Name: "Quaternion" } => MarshalType.Quaternion,
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{ Name: "Transform3D" } => MarshalType.Transform3D,
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{ Name: "AABB" } => MarshalType.AABB,
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{ Name: "Color" } => MarshalType.Color,
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{ Name: "Plane" } => MarshalType.Plane,
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{ Name: "RID" } => MarshalType.RID,
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{ Name: "Callable" } => MarshalType.Callable,
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{ Name: "SignalInfo" } => MarshalType.SignalInfo,
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{ TypeKind: TypeKind.Enum } => MarshalType.Enum,
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_ => null
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};
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}
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return null;
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}
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default:
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{
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if (type.TypeKind == TypeKind.Array)
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{
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var arrayType = (IArrayTypeSymbol)type;
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var elementType = arrayType.ElementType;
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switch (elementType.SpecialType)
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{
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case SpecialType.System_Byte:
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return MarshalType.ByteArray;
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case SpecialType.System_Int32:
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return MarshalType.Int32Array;
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case SpecialType.System_Int64:
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return MarshalType.Int64Array;
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case SpecialType.System_Single:
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return MarshalType.SingleArray;
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case SpecialType.System_Double:
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return MarshalType.DoubleArray;
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case SpecialType.System_String:
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return MarshalType.StringArray;
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case SpecialType.System_Object:
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return MarshalType.SystemObjectArray;
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}
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if (elementType.SimpleDerivesFrom(typeCache.GodotObjectType))
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return MarshalType.GodotObjectOrDerivedArray;
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if (type.ContainingAssembly.Name == "GodotSharp" &&
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type.ContainingNamespace.Name == "Godot")
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{
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return elementType switch
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{
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{ Name: "Vector2" } => MarshalType.Vector2Array,
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{ Name: "Vector3" } => MarshalType.Vector3Array,
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{ Name: "Color" } => MarshalType.ColorArray,
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_ => null
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};
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}
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}
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else if (type is INamedTypeSymbol { IsGenericType: true } genericType)
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{
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var genericTypeDef = genericType.ConstructedFrom;
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if (SymbolEqualityComparer.Default.Equals(genericTypeDef, typeCache.GodotGenericDictionary))
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return MarshalType.GodotGenericDictionary;
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if (SymbolEqualityComparer.Default.Equals(genericTypeDef, typeCache.GodotGenericArray))
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return MarshalType.GodotGenericArray;
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if (SymbolEqualityComparer.Default.Equals(genericTypeDef, typeCache.SystemGenericDictionary))
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return MarshalType.SystemGenericDictionary;
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if (SymbolEqualityComparer.Default.Equals(genericTypeDef, typeCache.SystemGenericList))
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return MarshalType.SystemGenericList;
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if (SymbolEqualityComparer.Default.Equals(genericTypeDef, typeCache.GenericIDictionary))
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return MarshalType.GenericIDictionary;
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return genericTypeDef.SpecialType switch
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{
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SpecialType.System_Collections_Generic_ICollection_T => MarshalType.GenericICollection,
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SpecialType.System_Collections_Generic_IEnumerable_T => MarshalType.GenericIEnumerable,
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_ => null
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};
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}
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else
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{
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if (type.SimpleDerivesFrom(typeCache.GodotObjectType))
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return MarshalType.GodotObjectOrDerived;
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if (SymbolEqualityComparer.Default.Equals(type, typeCache.IDictionary))
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return MarshalType.IDictionary;
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if (SymbolEqualityComparer.Default.Equals(type, typeCache.ICollection))
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return MarshalType.ICollection;
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if (specialType == SpecialType.System_Collections_IEnumerable)
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return MarshalType.IEnumerable;
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if (type.ContainingAssembly.Name == "GodotSharp")
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{
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switch (type.ContainingNamespace.Name)
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{
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case "Godot":
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return type switch
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{
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{ Name: "StringName" } => MarshalType.StringName,
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{ Name: "NodePath" } => MarshalType.NodePath,
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_ => null
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};
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case "Godot.Collections" when !(type is INamedTypeSymbol { IsGenericType: true }):
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return type switch
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{
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{ Name: "Dictionary" } => MarshalType.GodotDictionary,
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{ Name: "Array" } => MarshalType.GodotArray,
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_ => null
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};
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}
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}
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}
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break;
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}
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}
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return null;
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}
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private static bool SimpleDerivesFrom(this ITypeSymbol? type, ITypeSymbol candidateBaseType)
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{
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while (type != null)
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{
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if (SymbolEqualityComparer.Default.Equals(type, candidateBaseType))
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return true;
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type = type.BaseType;
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}
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return false;
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}
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}
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}
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