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using System.Collections.Generic;
using System.Linq;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
namespace Godot.SourceGenerators.Internal;
internal static class ExtensionMethods
{
public static AttributeData? GetGenerateUnmanagedCallbacksAttribute(this INamedTypeSymbol symbol)
=> symbol.GetAttributes()
.FirstOrDefault(a => a.AttributeClass?.IsGenerateUnmanagedCallbacksAttribute() ?? false);
private static bool HasGenerateUnmanagedCallbacksAttribute(
this ClassDeclarationSyntax cds, Compilation compilation,
out INamedTypeSymbol? symbol
)
{
var sm = compilation.GetSemanticModel(cds.SyntaxTree);
var classTypeSymbol = sm.GetDeclaredSymbol(cds);
if (classTypeSymbol == null)
{
symbol = null;
return false;
}
if (!classTypeSymbol.GetAttributes()
.Any(a => a.AttributeClass?.IsGenerateUnmanagedCallbacksAttribute() ?? false))
{
symbol = null;
return false;
}
symbol = classTypeSymbol;
return true;
}
private static bool IsGenerateUnmanagedCallbacksAttribute(this INamedTypeSymbol symbol)
=> symbol.ToString() == GeneratorClasses.GenerateUnmanagedCallbacksAttr;
public static IEnumerable<(ClassDeclarationSyntax cds, INamedTypeSymbol symbol)> SelectUnmanagedCallbacksClasses(
this IEnumerable<ClassDeclarationSyntax> source,
Compilation compilation
)
{
foreach (var cds in source)
{
if (cds.HasGenerateUnmanagedCallbacksAttribute(compilation, out var symbol))
yield return (cds, symbol!);
}
}
public static bool IsNested(this TypeDeclarationSyntax cds)
=> cds.Parent is TypeDeclarationSyntax;
public static bool IsPartial(this TypeDeclarationSyntax cds)
=> cds.Modifiers.Any(SyntaxKind.PartialKeyword);
public static bool AreAllOuterTypesPartial(
this TypeDeclarationSyntax cds,
out TypeDeclarationSyntax? typeMissingPartial
)
{
SyntaxNode? outerSyntaxNode = cds.Parent;
while (outerSyntaxNode is TypeDeclarationSyntax outerTypeDeclSyntax)
{
if (!outerTypeDeclSyntax.IsPartial())
{
typeMissingPartial = outerTypeDeclSyntax;
return false;
}
outerSyntaxNode = outerSyntaxNode.Parent;
}
typeMissingPartial = null;
return true;
}
public static string GetDeclarationKeyword(this INamedTypeSymbol namedTypeSymbol)
{
string? keyword = namedTypeSymbol.DeclaringSyntaxReferences
.OfType<TypeDeclarationSyntax>().FirstOrDefault()?
.Keyword.Text;
return keyword ?? namedTypeSymbol.TypeKind switch
{
TypeKind.Interface => "interface",
TypeKind.Struct => "struct",
_ => "class"
};
}
private static SymbolDisplayFormat FullyQualifiedFormatOmitGlobal { get; } =
SymbolDisplayFormat.FullyQualifiedFormat
.WithGlobalNamespaceStyle(SymbolDisplayGlobalNamespaceStyle.Omitted);
public static string FullQualifiedName(this ITypeSymbol symbol)
=> symbol.ToDisplayString(NullableFlowState.NotNull, FullyQualifiedFormatOmitGlobal);
public static string NameWithTypeParameters(this INamedTypeSymbol symbol)
{
return symbol.IsGenericType ?
string.Concat(symbol.Name, "<", string.Join(", ", symbol.TypeParameters), ">") :
symbol.Name;
}
public static string FullQualifiedName(this INamespaceSymbol symbol)
=> symbol.ToDisplayString(FullyQualifiedFormatOmitGlobal);
public static string SanitizeQualifiedNameForUniqueHint(this string qualifiedName)
=> qualifiedName
// AddSource() doesn't support angle brackets
.Replace("<", "(Of ")
.Replace(">", ")");
}
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