Add define-effect instruction

2 files changed, 19 insertions, 0 deletions

diff --git a/src/test/java/org/shedlang/compiler/stackir/InstructionSerializerTests.java b/src/test/java/org/shedlang/compiler/stackir/InstructionSerializerTests.java
index e2294588..4fd9c54a 100644
--- a/src/test/java/org/shedlang/compiler/stackir/InstructionSerializerTests.java
+++ b/src/test/java/org/shedlang/compiler/stackir/InstructionSerializerTests.java
@@ -6,6 +6,7 @@ import org.shedlang.compiler.sources.Sources;
 import org.shedlang.compiler.stackir.instructions.DefineFunctionInstruction;
 import org.shedlang.compiler.stackir.instructions.Instruction;
 import org.shedlang.compiler.stackir.instructions.Instructions;
+import org.shedlang.compiler.types.Effects;
 import org.shedlang.compiler.types.NamespaceName;
 import org.shedlang.compiler.types.Types;
 
@@ -25,6 +26,19 @@ public class InstructionSerializerTests {
     }
 
     @Test
+    public void canSerializeDefineEffect() {
+        var instruction = Instructions.defineEffect(
+            Effects.userDefined(NamespaceName.of("Example", "Project"), "State")
+        );
+
+        var string = serialize(instruction);
+
+        assertThat(string, equalTo("""
+            (define-effect "Example/Project.State")"""
+        ));
+    }
+
+    @Test
     public void canSerializeDefineFunction() {
         // TODO: make a builder
         var instruction = new DefineFunctionInstruction(
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 4971575c..643d9446 100644
--- a/src/test/java/org/shedlang/compiler/stackir/instructions/Instructions.java
+++ b/src/test/java/org/shedlang/compiler/stackir/instructions/Instructions.java
@@ -3,6 +3,7 @@ package org.shedlang.compiler.stackir.instructions;
 import org.shedlang.compiler.sources.Sources;
 import org.shedlang.compiler.types.NamespaceName;
 import org.shedlang.compiler.types.StructType;
+import org.shedlang.compiler.types.UserDefinedEffect;
 
 import java.math.BigInteger;
 import java.util.List;
@@ -15,6 +16,10 @@ public class Instructions {
         return new CallInstruction(positionalArgCount, namedArgNames, Sources.NULL);
     }
 
+    public static Instruction defineEffect(UserDefinedEffect effect) {
+        return new DefineEffectInstruction(effect, Sources.NULL);
+    }
+
     public static Instruction defineStruct(
         StructType type,
         List<DefineStructInstruction.Field> fields