add bases for conversions

src/main/java/de/maishai/typedast/typedclass/Class.java

@@ -3,7 +3,11 @@ package de.maishai.typedast.typedclass;
 import de.maishai.typedast.Node;
 import de.maishai.typedast.Type;
 import lombok.Data;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.Opcodes;
 
+import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -19,8 +23,47 @@ public class Class implements Node {
         return null;
     }
 
+    public Node startConversion(de.maishai.ast.records.Class c) {
+        Map<String, Type> local = new HashMap<>();
+        Map<String, Class> classMap = new HashMap<>();
+
+        return convertToTypedAST(local, classMap);
+    }
+
     @Override
     public Node convertToTypedAST(Map<String, Type> localVar, Map<String, Class> classes) {
         return null;
     }
+
+    public void codeGen() {
+        ClassWriter cw = new ClassWriter( ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
+        cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, name, null, "java/lang/Object", null);
+        for(Field field : fields) {
+            //field.codeGen(cw);
+        }
+        for(Method m: methods) {
+            //m.codeGen(cw);
+        }
+        writeClassfile(cw, name);
+    }
+
+    public static void writeClassfile(ClassWriter cw, String name) {
+        byte[] code = cw.toByteArray();
+        try {
+            java.io.FileOutputStream fos = new java.io.FileOutputStream("output/" + name + ".class");
+            fos.write(code);
+            fos.close();
+        } catch (java.io.IOException e) {
+            System.out.println("Error writing classfile: " + e);
+        }
+    }
+
+
+    public static void main(String[] args) {
+        Class c = new Class();
+        c.fields = new ArrayList<>();
+        c.methods = new ArrayList<>();
+        c.setName("Test");
+        c.codeGen();
+    }
 }