From 99f714d9a1037a3fab0995ce3414206258e68d05 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Wed, 19 Jul 2023 20:40:52 +0100
Subject: Generate Patio IR for discard

---
 .../java/org/shedlang/compiler/patio/PatioCodeGen.java | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'src/main/java')

diff --git a/src/main/java/org/shedlang/compiler/patio/PatioCodeGen.java b/src/main/java/org/shedlang/compiler/patio/PatioCodeGen.java
index ed180aba..f19e88ba 100644
--- a/src/main/java/org/shedlang/compiler/patio/PatioCodeGen.java
+++ b/src/main/java/org/shedlang/compiler/patio/PatioCodeGen.java
@@ -1,4 +1,22 @@
 package org.shedlang.compiler.patio;
 
+import org.pcollections.PVector;
+import org.shedlang.compiler.patio.instructions.PatioDiscard;
+import org.shedlang.compiler.patio.instructions.PatioInstruction;
+import org.shedlang.compiler.stackir.instructions.DiscardInstruction;
+import org.shedlang.compiler.stackir.instructions.Instruction;
+import org.shedlang.compiler.util.P;
+
 public class PatioCodeGen {
+    private PatioCodeGen() {}
+
+    public static PVector<PatioInstruction> generateInstruction(Instruction stackIrInstruction) {
+        return switch (stackIrInstruction) {
+            case DiscardInstruction discard ->
+                P.vector(new PatioDiscard(discard.source()));
+
+            default ->
+                throw new IllegalStateException("Unexpected value: " + stackIrInstruction);
+        };
+    }
 }
-- 
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