Merge remote-tracking branch 'origin/main'
# Conflicts: # src/main/java/parser/Main.java
This commit is contained in:
commit
402249e1ac
2
.idea/misc.xml
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2
.idea/misc.xml
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@ -40,7 +40,7 @@
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</list>
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</option>
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</component>
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<component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
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<component name="ProjectRootManager" version="2" languageLevel="JDK_22" default="true" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
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<output url="file://$PROJECT_DIR$/out" />
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</component>
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</project>
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BIN
Tester.class
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BIN
Tester.class
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Binary file not shown.
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Tester.java
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Tester.java
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public class Tester {
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public static void main(String[] args) {
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new Example();
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}
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}
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BIN
classFileOutput/Example.class
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BIN
classFileOutput/Example.class
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src/main/java/Example.java
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src/main/java/Example.java
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public class Example {
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}
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47
src/main/java/Main.java
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src/main/java/Main.java
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import bytecode.ByteCodeGenerator;
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import org.antlr.v4.runtime.CharStream;
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import org.antlr.v4.runtime.CharStreams;
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import org.antlr.v4.runtime.CommonTokenStream;
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import org.antlr.v4.runtime.tree.ParseTree;
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import parser.ASTBuilder;
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import parser.ClassDeclarationNode;
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import parser.ProgramNode;
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import parser.generated.SimpleJavaLexer;
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import parser.generated.SimpleJavaParser;
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import java.io.IOException;
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import java.nio.file.Paths;
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public class Main {
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public static void main(String[] args) throws Exception {
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CharStream codeCharStream = null;
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try {
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codeCharStream = CharStreams.fromPath(Paths.get("src/main/java/Example.java"));
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parsefile(codeCharStream);
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} catch (IOException e) {
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System.err.println("Error reading the file: " + e.getMessage());
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}
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}
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static void parsefile(CharStream codeCharStream){
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// CharStream codeCharStream = CharStreams.fromString("class Example { } class Example2 { }");
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SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
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CommonTokenStream tokens = new CommonTokenStream(lexer);
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SimpleJavaParser parser = new SimpleJavaParser(tokens);
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ParseTree tree = parser.program(); // parse the input
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ASTBuilder builder = new ASTBuilder();
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ProgramNode ast = (ProgramNode) builder.visit(tree); // build the AST
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// Optionally print or process the AST
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System.out.println("Parsed " + ast.classes.size() + " classes with identifiers/names:");
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for (ClassDeclarationNode classNode : ast.classes) {
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System.out.println(classNode.identifier);
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}
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ByteCodeGenerator byteCodeGenerator = new ByteCodeGenerator();
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byteCodeGenerator.generateByteCode(ast);
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}
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}
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@ -2,6 +2,7 @@ package bytecode;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import org.objectweb.asm.ClassWriter;
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import org.objectweb.asm.Opcodes;
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import ast.ProgramNode;
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@ -10,16 +11,25 @@ public class ByteCodeGenerator {
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public void generateByteCode(ProgramNode ast) {
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for (ClassDeclarationNode classDeclarationNode : ast.classes) {
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ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
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cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, classDeclarationNode.identifier, null,
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"java/lang/Object", null);
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cw.visitEnd();
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printIntoClassFile(cw.toByteArray(), classDeclarationNode.identifier);
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ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
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classWriter.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, classDeclarationNode.identifier, null,
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"java/lang/Object", null);
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FieldCodeGen fieldCodeGen = new FieldCodeGen();
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fieldCodeGen.generateFieldCode(classWriter);
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MethodCodeGen methodCodeGen = new MethodCodeGen();
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methodCodeGen.generateMethodCode(classWriter);
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classWriter.visitEnd();
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printIntoClassFile(classWriter.toByteArray(), classDeclarationNode.identifier);
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classWriter.visitEnd();
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}
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}
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private void printIntoClassFile(byte[] byteCode, String name) {
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String filePath = name + ".class";
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String filePath = "./classFileOutput/" + name + ".class";
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try {
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FileOutputStream fileOutputStream = new FileOutputStream(filePath);
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src/main/java/bytecode/FieldCodeGen.java
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10
src/main/java/bytecode/FieldCodeGen.java
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package bytecode;
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import org.objectweb.asm.ClassWriter;
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public class FieldCodeGen {
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public void generateFieldCode(ClassWriter classWriter) {
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}
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}
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src/main/java/bytecode/MethodCodeGen.java
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16
src/main/java/bytecode/MethodCodeGen.java
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package bytecode;
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import org.objectweb.asm.ClassWriter;
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import org.objectweb.asm.MethodVisitor;
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import org.objectweb.asm.Opcodes;
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public class MethodCodeGen {
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public void generateMethodCode(ClassWriter classWriter) {
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MethodVisitor constructor =
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classWriter.visitMethod(Opcodes.ACC_PUBLIC,
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"<init>",
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"()V",
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null,
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null);
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}
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}
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package parser;
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import ast.ProgramNode;
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import org.antlr.v4.runtime.CharStream;
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import org.antlr.v4.runtime.CharStreams;
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import org.antlr.v4.runtime.CommonTokenStream;
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import org.antlr.v4.runtime.tree.ParseTree;
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public class Main {
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public static void main(String[] args) throws Exception {
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// Assuming args[0] contains the path to the input file
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CharStream codeCharStream = CharStreams.fromString("class Test { }");
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SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
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CommonTokenStream tokens = new CommonTokenStream(lexer);
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SimpleJavaParser parser = new SimpleJavaParser(tokens);
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ParseTree tree = parser.program(); // parse the input
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ASTBuilder builder = new ASTBuilder();
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ProgramNode ast = (ProgramNode) builder.visit(tree); // build the AST
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// Optionally print or process the AST
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System.out.println("Parsed " + ast.classes.size() + " classes.");
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System.out.println(ast.classes.get(0).identifier);
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//ByteCodeGenerator byteCodeGenerator = new ByteCodeGenerator();
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//byteCodeGenerator.generateByteCode(ast);
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}
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}
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@ -1 +0,0 @@
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class Test { }
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this.b = b;
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this.c = c;
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}
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private class InnerClass {
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void innerMethod() {
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System.out.println("Inner class method");
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}
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}
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// Methode zur Demonstration von Kontrollstrukturen
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void controlStructures() {
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## Scanner Input
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### Beispiel 1: Empty Class
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String empty class = "class name {}";
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String empty class = "public class Name {}";
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### Beispiel 2: Filled Class
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## Scanner Output
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### Beispiel 1: Empty Class
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[TokClass,TokIdentifier "name",TokLeftBrace,TokRightBrace]
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[TokPublic,TokClass,TokIdentifier "Name",TokLeftBrace,TokRightBrace]
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### Beispiel 2: Filled Class
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[TokRightBrace]
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# Parser
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## Parser Input (Scanner Output)
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## Parser Input
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(Scanner Output)
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## Parser Output -> AST
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## Parser Output (AST)
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### Beispiel 1: Empty Class
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# Semantische Analyse / Typcheck
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## Typcheck Input (Parser Output)
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## Typcheck Input
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(Parser Output = AST)
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## Typcheck Output
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# Bytecodegenerierung
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## Bytecodegenerierung Input
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(Typcheck Output = vom Typcheck eventuell manipulierter AST)
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## Bytecodegenerierung Output
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### Beispiel 1: Empty Class
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Compiled Classfile
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public class Example {
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}
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### Beispiel 2: Filled Class
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