Add Patio code gen for field loads

1 files changed, 41 insertions, 0 deletions

diff --git a/src/test/java/org/shedlang/compiler/patio/PatioCodeGenFieldLoadTests.java b/src/test/java/org/shedlang/compiler/patio/PatioCodeGenFieldLoadTests.java
new file mode 100644
index 00000000..f4bb5152
--- /dev/null
+++ b/src/test/java/org/shedlang/compiler/patio/PatioCodeGenFieldLoadTests.java
@@ -0,0 +1,41 @@
+package org.shedlang.compiler.patio;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.shedlang.compiler.patio.ast.operands.PatioLocalRef;
+import org.shedlang.compiler.stackir.instructions.Instructions;
+import org.shedlang.compiler.testing.snapshots.SnapshotResolver;
+import org.shedlang.compiler.testing.snapshots.Snapshotter;
+import org.shedlang.compiler.typechecker.TypeCheckerContext;
+import org.shedlang.compiler.types.NamespaceName;
+import org.shedlang.compiler.types.Types;
+import org.shedlang.compiler.util.P;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+import static org.shedlang.compiler.patio.PatioTesting.serialize;
+
+@ExtendWith({SnapshotResolver.class})
+public class PatioCodeGenFieldLoadTests {
+    @Test
+    public void canGenerateCodeForFieldLoad(Snapshotter snapshotter) throws IOException {
+        var namespaceName = new NamespaceName(List.of("Example", "Project"));
+        var stackIrInstruction = Instructions.fieldLoad(namespaceName, "y");
+        var typeInfo = TypeCheckerContext.EMPTY
+            .addNamespaceFields(namespaceName, P.orderedMap(
+                Map.entry("x", Types.INT),
+                Map.entry("y", Types.INT),
+                Map.entry("z", Types.INT)
+            ))
+            .toTypeInfo();
+        var context = PatioCodeGenContext.forTypeInfo(typeInfo)
+            .temporaryPush(new PatioLocalRef("a"))
+            .temporaryPush(new PatioLocalRef("b"));
+
+        var result = PatioCodeGen.generateInstruction(stackIrInstruction, context);
+
+        snapshotter.assertSnapshot(serialize(result));
+    }
+}