Add instruction to define functions

2 files changed, 22 insertions, 1 deletions

diff --git a/src/main/java/org/shedlang/compiler/stackir/instructions/DefineFunctionInstruction.java b/src/main/java/org/shedlang/compiler/stackir/instructions/DefineFunctionInstruction.java
new file mode 100644
index 00000000..fef0583f
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/stackir/instructions/DefineFunctionInstruction.java
@@ -0,0 +1,17 @@
+package org.shedlang.compiler.stackir.instructions;
+
+import org.shedlang.compiler.sources.Source;
+
+import java.util.List;
+
+public record DefineFunctionInstruction(
+    String name,
+    List<Param> positionalParams,
+    List<Param> namedParams,
+    List<Instruction> body,
+    Source source
+) implements Instruction {
+    public record Param(String name, Source source) {
+
+    }
+}
diff --git a/src/main/java/org/shedlang/compiler/stackir/instructions/Instruction.java b/src/main/java/org/shedlang/compiler/stackir/instructions/Instruction.java
index 0b5d9dd8..2ff0eebc 100644
--- a/src/main/java/org/shedlang/compiler/stackir/instructions/Instruction.java
+++ b/src/main/java/org/shedlang/compiler/stackir/instructions/Instruction.java
@@ -1,5 +1,9 @@
 package org.shedlang.compiler.stackir.instructions;
 
+import org.shedlang.compiler.sources.Source;
+
 public sealed interface Instruction
-    permits CallInstruction, DiscardInstruction, LocalLoadInstruction, LocalStoreInstruction, PushBoolInstruction, PushIntInstruction, PushStringInstruction {
+    permits CallInstruction, DefineFunctionInstruction, DiscardInstruction, LocalLoadInstruction, LocalStoreInstruction, PushBoolInstruction, PushIntInstruction, PushStringInstruction {
+
+    Source source();
 }