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Add support for multiple interfaces

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This commit is contained in:
nub31
2025-08-13 19:18:37 +02:00
parent cc8f8210b5
commit 9c69c39cff
2 changed files with 31 additions and 11 deletions
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16
src/compiler/NubLang/Generation/QBE/QBEGenerator.Expression.cs
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@@ -459,9 +459,23 @@ public partial class QBEGenerator
{
var implementation = EmitUnwrap(EmitExpression(interfaceInitializer.Implementation));
var vtableOffset = 0;
foreach (var interfaceImplementation in interfaceInitializer.StructType.InterfaceImplementations)
{
if (interfaceImplementation == interfaceInitializer.InterfaceType)
{
break;
}
vtableOffset += interfaceImplementation.Functions.Count * 8;
}
var result = TmpName();
_writer.Indented($"{result} =l alloc8 16");
_writer.Indented($"storel {StructVtableName(interfaceInitializer.StructType.Name)}, {result}");
var interfaceVtablePointer = TmpName();
_writer.Indented($"{interfaceVtablePointer} =l add {StructVtableName(interfaceInitializer.StructType.Name)}, {vtableOffset}");
_writer.Indented($"storel {interfaceVtablePointer}, {result}");
var objectPointer = TmpName();
_writer.Indented($"{objectPointer} =l add {result}, 8");