Merge branch 'main' into johns-branch

src/main/java/CompilerInput.txt

@@ -0,0 +1,3 @@
+public class Example {
+
+}

src/main/java/Main.java

@@ -18,9 +18,11 @@ import java.nio.file.Paths;
 
 public class Main {
     public static void main(String[] args) throws Exception {
+
         CharStream codeCharStream = null;
+
         try {
-            codeCharStream = CharStreams.fromPath(Paths.get("src/main/resources/Example.txt"));
+            codeCharStream = CharStreams.fromPath(Paths.get("src/main/java/CompilerInput.txt"));
             parsefile(codeCharStream);
         } catch (IOException e) {
             System.err.println("Error reading the file: " + e.getMessage());
@@ -29,7 +31,7 @@ public class Main {
 
 
     static void parsefile(CharStream codeCharStream){
-        // CharStream codeCharStream = CharStreams.fromString("class Example { } class Example2 { }");
+        // CharStream codeCharStream = CharStreams.fromString("class javaFileInput.Example { } class Example2 { }");
         SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
         CommonTokenStream tokens = new CommonTokenStream(lexer);
         SimpleJavaParser parser = new SimpleJavaParser(tokens);

src/main/java/bytecode/ClassCodeGen.java

@@ -1,6 +1,10 @@
 package bytecode;
 
 import ast.ClassNode;
+import ast.FieldNode;
+import ast.MemberNode;
+import ast.MethodNode;
+import java.io.File;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.Opcodes;
 
@@ -10,14 +14,19 @@ import java.io.IOException;
 public class ClassCodeGen {
     public void generateClassCode(ClassNode classNode) {
         ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
-        classWriter.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, classNode.identifier.getName(), null,
+        Mapper mapper = new Mapper();
+        classWriter.visit(Opcodes.V1_8, mapper.mapAccesTypeToOpcode(classNode.accessType), classNode.name, null,
                 "java/lang/Object", null);
 
-        FieldCodeGen fieldCodeGen = new FieldCodeGen();
+        for (MemberNode memberNode : classNode.members) {
-        fieldCodeGen.generateFieldCode(classWriter);
+            if (memberNode instanceof FieldNode) {
-
+                FieldCodeGen fieldCodeGen = new FieldCodeGen();
-        MethodCodeGen methodCodeGen = new MethodCodeGen();
+                fieldCodeGen.generateFieldCode(classWriter, (FieldNode) memberNode);
-        methodCodeGen.generateMethodCode(classWriter);
+            } else if (memberNode instanceof MethodNode) {
+                MethodCodeGen methodCodeGen = new MethodCodeGen();
+                methodCodeGen.generateMethodCode(classWriter, (MethodNode) memberNode);
+            }
+        }
 
         classWriter.visitEnd();
         printIntoClassFile(classWriter.toByteArray(), classNode.identifier.getName());
@@ -26,8 +35,13 @@ public class ClassCodeGen {
     }
 
     private void printIntoClassFile(byte[] byteCode, String name) {
-        String filePath = "./classFileOutput/" + name + ".class";
+        String directoryPath = "src/main/java/classFileOutput";
+        File directory = new File(directoryPath);
+        if (!directory.exists()) {
+            directory.mkdirs();
+        }
 
+        String filePath = directoryPath + "/" + name + ".class";
         try {
             FileOutputStream fileOutputStream = new FileOutputStream(filePath);
             fileOutputStream.write(byteCode);

src/main/java/bytecode/FieldCodeGen.java

@@ -1,10 +1,14 @@
 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) {
-
+        Mapper mapper = new Mapper();
+        FieldVisitor fieldVisitor = classWriter.visitField(mapper.mapAccesTypeToOpcode(fieldNode.accessTypeNode), fieldNode.name, "", null, null);
     }
 }

src/main/java/bytecode/Mapper.java

@@ -0,0 +1,17 @@
+package bytecode;
+
+import ast.AccessTypeNode;
+import ast.EnumAccessTypeNode;
+import org.objectweb.asm.Opcodes;
+
+public class Mapper {
+    public int mapAccesTypeToOpcode(AccessTypeNode type) {
+        switch (type.enumAccessTypeNode) {
+            case EnumAccessTypeNode.PUBLIC:
+                return Opcodes.ACC_PUBLIC;
+            case EnumAccessTypeNode.PRIVATE:
+                return Opcodes.ACC_PRIVATE;
+        }
+        return 0;
+    }
+}

src/main/java/bytecode/MethodCodeGen.java

@@ -1,13 +1,15 @@
 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) {
+        Mapper mapper = new Mapper();
         MethodVisitor constructor =
-                classWriter.visitMethod(Opcodes.ACC_PUBLIC,
+                classWriter.visitMethod(mapper.mapAccesTypeToOpcode(methodNode.visibility),
                         "<init>",
                         "()V",
                         null,

src/main/test/java/AllFeaturesClassExample.java

@@ -1,10 +1,10 @@
-public class SimpleJavaFeatureTest {
+public class AllFeaturesClassExample {
     int a;
     boolean b;
     char c;
 
     // Konstruktor
-    SimpleJavaFeatureTest(int a, boolean b, char c) {
+    AllFeaturesClassExample(int a, boolean b, char c) {
         this.a = a;
         this.b = b;
         this.c = c;
@@ -62,7 +62,7 @@ public class SimpleJavaFeatureTest {
     }
 
     public static void main(String[] args) {
-        SimpleJavaFeatureTest obj = new SimpleJavaFeatureTest(12, true, 'a');
+        AllFeaturesClassExample obj = new AllFeaturesClassExample(12, true, 'a');
         obj.controlStructures();
         obj.logicalOperations();
     }

src/main/test/java/EmptyClassExample.java

@@ -0,0 +1,4 @@
+public class EmptyClassExample {
+    private class Inner {
+    }
+}

src/main/test/java/MainTest.java

@@ -21,7 +21,7 @@ public class MainTest {
     void testEmptyClass() {
         CharStream codeCharStream = null;
         try {
-            codeCharStream = CharStreams.fromPath(Paths.get("src/main/java/Example.java"));
+            codeCharStream = CharStreams.fromPath(Paths.get("src/main/test/java/EmptyClassExample.java"));
             Main.parsefile(codeCharStream);
         } catch (IOException e) {
             System.err.println("Error reading the file: " + e.getMessage());

src/main/test/java/MoreFeaturesClassExample.java

@@ -0,0 +1,6 @@
+public class MoreFeaturesClassExample {
+    int hallo;
+    private class Inner {
+        int hallo2;
+    }
+}

src/main/test/java/TestSpecs.md

@@ -7,7 +7,7 @@
 ### Beispiel 2: Filled Class
 
     String filled class = 
-            "class Example {" +
+            "class javaFileInput.Example {" +
             "if (x < 5) {" +
             "for (int i = 0; i < 10; i++) {" +
             "while (true) {" +
@@ -21,7 +21,7 @@
 
 ### Beispiel 2: Filled Class
 
-    [TokClass,TokIdentifier "Example",TokLeftBrace]
+    [TokClass,TokIdentifier "javaFileInput.Example",TokLeftBrace]
     [TokIf,TokLeftParen,TokIdentifier "x",TokLessThan,TokNumber 5,TokRightParen,TokLeftBrace]
     [TokFor,TokLeftParen,TokIdentifier "int",TokIdentifier "i",TokAssign,TokNumber 0,TokSemicolon,TokIdentifier "i",TokLessThan,TokNumber 10,TokSemicolon,TokIdentifier "i",TokPlus,TokPlus,TokRightParen,TokLeftBrace]
     [TokWhile,TokLeftParen,TokIdentifier "true",TokRightParen,TokLeftBrace]
@@ -63,7 +63,7 @@
 ### Beispiel 1: Empty Class
 Compiled Classfile
 
-    public class Example {
+    public class javaFileInput.Example {
     }
 
 

src/main/test/java/Tester.java

@@ -1,5 +1,5 @@
 public class Tester {
     public static void main(String[] args) {
-        new Example();
+        new EmptyClassExample();
     }
 }