From 689c9c1e8af8fd2fff2b390649a59e613e85eb6a Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sat, 2 Dec 2023 14:25:46 +0000
Subject: Add resume instruction

---
 .../shedlang/compiler/stackir/InstructionSerializerTests.java    | 9 +++++++++
 .../compiler/stackir/StackCompilerFunctionResumeTests.java       | 5 ++---
 .../compiler/stackir/instructions/InstructionMatchers.java       | 6 ++++++
 .../org/shedlang/compiler/stackir/instructions/Instructions.java | 4 ++++
 4 files changed, 21 insertions(+), 3 deletions(-)

(limited to 'src/test/java/org/shedlang/compiler/stackir')

diff --git a/src/test/java/org/shedlang/compiler/stackir/InstructionSerializerTests.java b/src/test/java/org/shedlang/compiler/stackir/InstructionSerializerTests.java
index 2f8c4c44..c36977cf 100644
--- a/src/test/java/org/shedlang/compiler/stackir/InstructionSerializerTests.java
+++ b/src/test/java/org/shedlang/compiler/stackir/InstructionSerializerTests.java
@@ -332,6 +332,15 @@ public class InstructionSerializerTests {
         assertThat(string, equalTo("(push-unit)"));
     }
 
+    @Test
+    public void canSerializeResume() {
+        var instruction = Instructions.resume();
+
+        var string = serialize(instruction);
+
+        assertThat(string, equalTo("(resume)"));
+    }
+
     @Test
     public void canSerializeReturn() {
         var instruction = Instructions.return_();
diff --git a/src/test/java/org/shedlang/compiler/stackir/StackCompilerFunctionResumeTests.java b/src/test/java/org/shedlang/compiler/stackir/StackCompilerFunctionResumeTests.java
index 1aa61a57..06c967f9 100644
--- a/src/test/java/org/shedlang/compiler/stackir/StackCompilerFunctionResumeTests.java
+++ b/src/test/java/org/shedlang/compiler/stackir/StackCompilerFunctionResumeTests.java
@@ -3,8 +3,7 @@ package org.shedlang.compiler.stackir;
 import org.junit.jupiter.api.Test;
 import org.shedlang.compiler.ast.typed.Typed;
 
-import static org.shedlang.compiler.stackir.instructions.InstructionMatchers.isPushStringInstruction;
-import static org.shedlang.compiler.stackir.instructions.InstructionMatchers.isReturnInstruction;
+import static org.shedlang.compiler.stackir.instructions.InstructionMatchers.*;
 import static org.zwobble.precisely.AssertThat.assertThat;
 import static org.zwobble.precisely.Matchers.isSequence;
 
@@ -18,7 +17,7 @@ public class StackCompilerFunctionResumeTests {
 
         assertThat(result.instructions(), isSequence(
             isPushStringInstruction("hello"),
-            isReturnInstruction()
+            isResumeInstruction()
         ));
     }
 }
diff --git a/src/test/java/org/shedlang/compiler/stackir/instructions/InstructionMatchers.java b/src/test/java/org/shedlang/compiler/stackir/instructions/InstructionMatchers.java
index a33f4f6c..34c94f0e 100644
--- a/src/test/java/org/shedlang/compiler/stackir/instructions/InstructionMatchers.java
+++ b/src/test/java/org/shedlang/compiler/stackir/instructions/InstructionMatchers.java
@@ -164,6 +164,12 @@ public class InstructionMatchers {
         );
     }
 
+    public static Matcher<Instruction> isResumeInstruction() {
+        return instanceOf(
+            ResumeInstruction.class
+        );
+    }
+
     public static Matcher<Instruction> isReturnInstruction() {
         return instanceOf(
             ReturnInstruction.class
diff --git a/src/test/java/org/shedlang/compiler/stackir/instructions/Instructions.java b/src/test/java/org/shedlang/compiler/stackir/instructions/Instructions.java
index ae776fc7..ce6ebf37 100644
--- a/src/test/java/org/shedlang/compiler/stackir/instructions/Instructions.java
+++ b/src/test/java/org/shedlang/compiler/stackir/instructions/Instructions.java
@@ -139,6 +139,10 @@ public class Instructions {
         return new PushUnitInstruction(Sources.NULL);
     }
 
+    public static Instruction resume() {
+        return new ResumeInstruction(Sources.NULL);
+    }
+
     public static Instruction return_() {
         return new ReturnInstruction(Sources.NULL);
     }
-- 
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