From 56536cc64b373db7bc5577013c8877662b73f8b6 Mon Sep 17 00:00:00 2001
From: Laborratte5 <laborratte5@gmail.com>
Date: Sat, 10 May 2025 01:46:13 +0200
Subject: [PATCH] refactor: Use strategy for CodeGenerator backend

This makes it easier to switch between the code generator backends
which may help debugging.
---
 src/main/java/edu/kit/kastel/vads/compiler/Main.java  |  6 ++++--
 .../kastel/vads/compiler/backend/CodeGenerator.java   | 11 +++++++++++
 .../{CodeGenerator.java => AasmCodeGenerator.java}    |  3 ++-
 3 files changed, 17 insertions(+), 3 deletions(-)
 create mode 100644 src/main/java/edu/kit/kastel/vads/compiler/backend/CodeGenerator.java
 rename src/main/java/edu/kit/kastel/vads/compiler/backend/aasm/{CodeGenerator.java => AasmCodeGenerator.java} (96%)

diff --git a/src/main/java/edu/kit/kastel/vads/compiler/Main.java b/src/main/java/edu/kit/kastel/vads/compiler/Main.java
index d6034b4..34d208a 100644
--- a/src/main/java/edu/kit/kastel/vads/compiler/Main.java
+++ b/src/main/java/edu/kit/kastel/vads/compiler/Main.java
@@ -1,6 +1,7 @@
 package edu.kit.kastel.vads.compiler;
 
-import edu.kit.kastel.vads.compiler.backend.aasm.CodeGenerator;
+import edu.kit.kastel.vads.compiler.backend.CodeGenerator;
+import edu.kit.kastel.vads.compiler.backend.aasm.AasmCodeGenerator;
 import edu.kit.kastel.vads.compiler.ir.IrGraph;
 import edu.kit.kastel.vads.compiler.ir.SsaTranslation;
 import edu.kit.kastel.vads.compiler.ir.optimize.LocalValueNumbering;
@@ -50,7 +51,8 @@ public class Main {
         }
 
         // TODO: generate assembly and invoke gcc instead of generating abstract assembly
-        String s = new CodeGenerator().generateCode(graphs);
+        CodeGenerator generator = new AasmCodeGenerator();
+        String s = generator.generateCode(graphs);
         Files.writeString(output, s);
     }
 
diff --git a/src/main/java/edu/kit/kastel/vads/compiler/backend/CodeGenerator.java b/src/main/java/edu/kit/kastel/vads/compiler/backend/CodeGenerator.java
new file mode 100644
index 0000000..f42ee7b
--- /dev/null
+++ b/src/main/java/edu/kit/kastel/vads/compiler/backend/CodeGenerator.java
@@ -0,0 +1,11 @@
+package edu.kit.kastel.vads.compiler.backend;
+
+import java.util.List;
+
+import edu.kit.kastel.vads.compiler.ir.IrGraph;
+
+public interface CodeGenerator {
+
+    public String generateCode(List<IrGraph> program);
+
+}
diff --git a/src/main/java/edu/kit/kastel/vads/compiler/backend/aasm/CodeGenerator.java b/src/main/java/edu/kit/kastel/vads/compiler/backend/aasm/AasmCodeGenerator.java
similarity index 96%
rename from src/main/java/edu/kit/kastel/vads/compiler/backend/aasm/CodeGenerator.java
rename to src/main/java/edu/kit/kastel/vads/compiler/backend/aasm/AasmCodeGenerator.java
index 7a9b177..84990a5 100644
--- a/src/main/java/edu/kit/kastel/vads/compiler/backend/aasm/CodeGenerator.java
+++ b/src/main/java/edu/kit/kastel/vads/compiler/backend/aasm/AasmCodeGenerator.java
@@ -1,5 +1,6 @@
 package edu.kit.kastel.vads.compiler.backend.aasm;
 
+import edu.kit.kastel.vads.compiler.backend.CodeGenerator;
 import edu.kit.kastel.vads.compiler.backend.regalloc.Register;
 import edu.kit.kastel.vads.compiler.ir.IrGraph;
 import edu.kit.kastel.vads.compiler.ir.node.AddNode;
@@ -23,7 +24,7 @@ import java.util.Set;
 
 import static edu.kit.kastel.vads.compiler.ir.util.NodeSupport.predecessorSkipProj;
 
-public class CodeGenerator {
+public class AasmCodeGenerator implements CodeGenerator {
 
     public String generateCode(List<IrGraph> program) {
         StringBuilder builder = new StringBuilder();