1 files changed, 21 insertions, 1 deletions
diff --git a/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java b/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java
index 8e0ec59e..dc171e00 100644
--- a/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java
+++ b/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java
@@ -365,7 +365,7 @@ public class StackCompiler {
                 compileFunctionDefinition(functionDefinition, context);
 
             case TypedStructDefinitionNode structDefinition ->
-                throw new UnsupportedOperationException("TODO");
+                compileStructDefinition(structDefinition, context);
         };
     }
 
@@ -393,6 +393,26 @@ public class StackCompiler {
         return context.addInstruction(instruction);
     }
 
+    private static Context compileStructDefinition(
+        TypedStructDefinitionNode node,
+        Context context
+    ) {
+        var defineStructInstruction = new DefineStructInstruction(
+            node.type(),
+            node.fields().stream()
+                .map(field -> new DefineStructInstruction.Field(field.name(), field.source()))
+                .toList(),
+            node.source()
+        );
+
+        var localName = context.shedVariableToLocal(node.type().name());
+        var storeInstruction = new LocalStoreInstruction(localName, node.source());
+
+        return context
+            .addInstruction(defineStructInstruction)
+            .addInstruction(storeInstruction);
+    }
+
     private static Context compileTarget(
         TypedTargetNode target,
         Context context