Add accesTypeToOpcode mapper

src/main/java/Example.java

@@ -1,3 +1,3 @@
-public class Example {
-}
+public class Example() {
 
+}

src/main/java/Main.java

@@ -14,7 +14,7 @@ public class Main {
     public static void main(String[] args) throws Exception {
         CharStream codeCharStream = null;
         try {
-            codeCharStream = CharStreams.fromPath(Paths.get("src\\main\\java\\Example.java"));
+            codeCharStream = CharStreams.fromPath(Paths.get("src/main/java/Example.java"));
             parsefile(codeCharStream);
         } catch (IOException e) {
             System.err.println("Error reading the file: " + e.getMessage());

src/main/java/bytecode/ClassCodeGen.java

@@ -1,6 +1,9 @@
 package bytecode;
 
 import ast.ClassNode;
+import ast.FieldNode;
+import ast.MemberNode;
+import ast.MethodNode;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.Opcodes;
 
@@ -13,11 +16,15 @@ public class ClassCodeGen {
         classWriter.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, classNode.name, null,
                 "java/lang/Object", null);
 
-        FieldCodeGen fieldCodeGen = new FieldCodeGen();
-        fieldCodeGen.generateFieldCode(classWriter);
-
-        MethodCodeGen methodCodeGen = new MethodCodeGen();
-        methodCodeGen.generateMethodCode(classWriter);
+        for (MemberNode memberNode : classNode.members) {
+            if (memberNode instanceof FieldNode) {
+                FieldCodeGen fieldCodeGen = new FieldCodeGen();
+                fieldCodeGen.generateFieldCode(classWriter, (FieldNode) memberNode);
+            } else if (memberNode instanceof MethodNode) {
+                MethodCodeGen methodCodeGen = new MethodCodeGen();
+                methodCodeGen.generateMethodCode(classWriter, (MethodNode) memberNode);
+            }
+        }
 
         classWriter.visitEnd();
         printIntoClassFile(classWriter.toByteArray(), classNode.name);

src/main/java/bytecode/FieldCodeGen.java

@@ -1,10 +1,13 @@
 package bytecode;
 
+import ast.FieldNode;
 import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.FieldVisitor;
+import org.objectweb.asm.Opcodes;
 
 public class FieldCodeGen {
 
-    public void generateFieldCode(ClassWriter classWriter) {
-
+    public void generateFieldCode(ClassWriter classWriter, FieldNode fieldNode) {
+        FieldVisitor fieldVisitor = classWriter.visitField(Opcodes.ACC_PUBLIC, fieldNode.name, "", null, null);
     }
 }

src/main/java/bytecode/MethodCodeGen.java

@@ -1,11 +1,12 @@
 package bytecode;
 
+import ast.MethodNode;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.MethodVisitor;
 import org.objectweb.asm.Opcodes;
 
 public class MethodCodeGen {
-    public void generateMethodCode(ClassWriter classWriter) {
+    public void generateMethodCode(ClassWriter classWriter, MethodNode methodNode) {
         MethodVisitor constructor =
                 classWriter.visitMethod(Opcodes.ACC_PUBLIC,
                         "<init>",