From c25a7bd63bc7c056c79f234e86fb4c30fd44f0bf Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sat, 8 Mar 2025 13:03:11 +0000
Subject: Add PatioDataElementMutableDeclaration

---
 .../shedlang/compiler/backends/llvm/codegen/PatioToLlvm.java  |  5 +++++
 .../java/org/shedlang/compiler/backends/wasm/PatioToWasm.java |  3 +++
 .../shedlang/compiler/patio/PatioCompilationUnitElement.java  |  2 +-
 .../compiler/patio/PatioDataElementMutableDeclaration.java    | 11 +++++++++++
 .../java/org/shedlang/compiler/patio/PatioSerializer.java     |  7 +++++++
 5 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/org/shedlang/compiler/patio/PatioDataElementMutableDeclaration.java

(limited to 'src/main/java')

diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/codegen/PatioToLlvm.java b/src/main/java/org/shedlang/compiler/backends/llvm/codegen/PatioToLlvm.java
index c592287c..4d838b34 100644
--- a/src/main/java/org/shedlang/compiler/backends/llvm/codegen/PatioToLlvm.java
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/codegen/PatioToLlvm.java
@@ -123,6 +123,8 @@ public class PatioToLlvm {
             switch (patioCompilationUnitElement) {
                 case PatioDataElementImmutableDefinition patioDataElementImmutableDefinition -> {
                 }
+                case PatioDataElementMutableDeclaration patioDataElementMutableDeclaration -> {
+                }
                 case PatioDataElementMutableDefinition patioDataElementMutableDefinition -> {
                 }
                 case PatioFunctionDeclaration patioFunctionDeclaration -> {
@@ -167,6 +169,9 @@ public class PatioToLlvm {
             case PatioDataElementImmutableDefinition patioDataElementImmutableDefinition ->
                 generateDataElementImmutableDefinition(patioDataElementImmutableDefinition, context);
 
+            case PatioDataElementMutableDeclaration patioDataElementMutableDeclaration ->
+                throw new UnsupportedOperationException("TODO");
+
             case PatioDataElementMutableDefinition patioDataElementMutableDefinition ->
                 generateDataElementMutableDefinition(patioDataElementMutableDefinition, context);
 
diff --git a/src/main/java/org/shedlang/compiler/backends/wasm/PatioToWasm.java b/src/main/java/org/shedlang/compiler/backends/wasm/PatioToWasm.java
index 6cbe0491..fd4e7345 100644
--- a/src/main/java/org/shedlang/compiler/backends/wasm/PatioToWasm.java
+++ b/src/main/java/org/shedlang/compiler/backends/wasm/PatioToWasm.java
@@ -49,6 +49,9 @@ public class PatioToWasm {
                         WasmAlignment.ALIGN_32_BIT
                     ).memory();
                 }
+                case PatioDataElementMutableDeclaration patioDataElementMutableDeclaration -> {
+                    throw new UnsupportedOperationException("TODO");
+                }
                 case PatioDataElementMutableDefinition patioDataElementMutableDefinition -> {
                     wasmMemoryBuilder = wasmMemoryBuilder.add(
                         patioDataElementMutableDefinition.name(),
diff --git a/src/main/java/org/shedlang/compiler/patio/PatioCompilationUnitElement.java b/src/main/java/org/shedlang/compiler/patio/PatioCompilationUnitElement.java
index 7f757a00..b9e43d81 100644
--- a/src/main/java/org/shedlang/compiler/patio/PatioCompilationUnitElement.java
+++ b/src/main/java/org/shedlang/compiler/patio/PatioCompilationUnitElement.java
@@ -2,7 +2,7 @@ package org.shedlang.compiler.patio;
 
 import org.shedlang.compiler.sources.Source;
 
-public sealed interface PatioCompilationUnitElement permits PatioDataElementImmutableDefinition, PatioDataElementMutableDefinition, PatioExceptionTypeDefinition, PatioFunctionDeclaration, PatioFunctionDefinition {
+public sealed interface PatioCompilationUnitElement permits PatioDataElementImmutableDefinition, PatioDataElementMutableDeclaration, PatioDataElementMutableDefinition, PatioExceptionTypeDefinition, PatioFunctionDeclaration, PatioFunctionDefinition {
     String name();
     Source source();
 }
diff --git a/src/main/java/org/shedlang/compiler/patio/PatioDataElementMutableDeclaration.java b/src/main/java/org/shedlang/compiler/patio/PatioDataElementMutableDeclaration.java
new file mode 100644
index 00000000..0dc9ac13
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/patio/PatioDataElementMutableDeclaration.java
@@ -0,0 +1,11 @@
+package org.shedlang.compiler.patio;
+
+import org.shedlang.compiler.patio.types.PatioDataLayout;
+import org.shedlang.compiler.sources.Source;
+
+public record PatioDataElementMutableDeclaration(
+    String name,
+    PatioDataLayout layout,
+    Source source
+) implements PatioCompilationUnitElement {
+}
diff --git a/src/main/java/org/shedlang/compiler/patio/PatioSerializer.java b/src/main/java/org/shedlang/compiler/patio/PatioSerializer.java
index a67e2df2..412dd932 100644
--- a/src/main/java/org/shedlang/compiler/patio/PatioSerializer.java
+++ b/src/main/java/org/shedlang/compiler/patio/PatioSerializer.java
@@ -103,6 +103,13 @@ public class PatioSerializer {
                     dataValueToTree(dataElementImmutableDefinition.value())
                 );
 
+            case PatioDataElementMutableDeclaration dataElementMutableDeclaration ->
+                treeList(
+                    treeIdentifier("data-mutable-decl"),
+                    treeString(dataElementMutableDeclaration.name()),
+                    dataLayoutToTree(dataElementMutableDeclaration.layout())
+                );
+
             case PatioDataElementMutableDefinition dataElementMutableDefinition ->
                 treeList(
                     treeIdentifier("data-mutable"),
-- 
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