Add Patio IR with discard instruction

2 files changed, 36 insertions, 0 deletions

diff --git a/src/test/java/org/shedlang/compiler/patio/PatioInstructionSerializerTests.java b/src/test/java/org/shedlang/compiler/patio/PatioInstructionSerializerTests.java
new file mode 100644
index 00000000..1b4119bc
--- /dev/null
+++ b/src/test/java/org/shedlang/compiler/patio/PatioInstructionSerializerTests.java
@@ -0,0 +1,25 @@
+package org.shedlang.compiler.patio;
+
+import org.junit.jupiter.api.Test;
+import org.shedlang.compiler.patio.instructions.Patio;
+import org.shedlang.compiler.patio.instructions.PatioInstruction;
+
+import static org.zwobble.precisely.AssertThat.assertThat;
+import static org.zwobble.precisely.Matchers.equalTo;
+
+public class PatioInstructionSerializerTests {
+    @Test
+    public void canSerializeDiscard() {
+        var instruction = Patio.discard();
+
+        var string = serialize(instruction);
+
+        assertThat(string, equalTo("(discard)"));
+    }
+
+    private String serialize(PatioInstruction instruction) {
+        var builder = new StringBuilder();
+        PatioInstructionSerializer.serializeInstruction(instruction, builder);
+        return builder.toString();
+    }
+}
diff --git a/src/test/java/org/shedlang/compiler/patio/instructions/Patio.java b/src/test/java/org/shedlang/compiler/patio/instructions/Patio.java
new file mode 100644
index 00000000..936066fd
--- /dev/null
+++ b/src/test/java/org/shedlang/compiler/patio/instructions/Patio.java
@@ -0,0 +1,11 @@
+package org.shedlang.compiler.patio.instructions;
+
+import org.shedlang.compiler.sources.Sources;
+
+public class Patio {
+    private Patio() {}
+
+    public static PatioInstruction discard() {
+        return new PatioDiscard(Sources.NULL);
+    }
+}