Merge branch 'main' into johns-branch
This commit is contained in:
commit
5344b01384
BIN
Tester.class
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BIN
Tester.class
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@ -1,5 +1,5 @@
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public class Tester {
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public class Tester {
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public static void main(String[] args) {
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public static void main(String[] args) {
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new Test();
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new Example();
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}
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}
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}
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}
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BIN
classFileOutput/Example.class
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classFileOutput/Example.class
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@ -2,8 +2,8 @@ package bytecode;
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import java.io.FileOutputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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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.ClassWriter;
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import org.objectweb.asm.MethodVisitor;
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import org.objectweb.asm.Opcodes;
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import org.objectweb.asm.Opcodes;
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import parser.ClassDeclarationNode;
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import parser.ClassDeclarationNode;
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import parser.ProgramNode;
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import parser.ProgramNode;
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@ -12,24 +12,25 @@ public class ByteCodeGenerator {
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public void generateByteCode(ProgramNode ast) {
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public void generateByteCode(ProgramNode ast) {
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for (ClassDeclarationNode classDeclarationNode : ast.classes) {
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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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ClassWriter classWriter = 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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classWriter.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, classDeclarationNode.identifier, null,
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"java/lang/Object", null);
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"java/lang/Object", null);
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MethodVisitor constructor =
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FieldCodeGen fieldCodeGen = new FieldCodeGen();
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cw.visitMethod(Opcodes.ACC_PUBLIC,
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fieldCodeGen.generateFieldCode(classWriter);
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"<init>",
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"()V",
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null,
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null);
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cw.visitEnd();
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printIntoClassFile(cw.toByteArray(), classDeclarationNode.identifier);
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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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}
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}
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private void printIntoClassFile(byte[] byteCode, String name) {
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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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try {
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FileOutputStream fileOutputStream = new FileOutputStream(filePath);
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FileOutputStream fileOutputStream = new FileOutputStream(filePath);
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10
src/main/java/bytecode/FieldCodeGen.java
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src/main/java/bytecode/FieldCodeGen.java
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@ -0,0 +1,10 @@
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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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16
src/main/java/bytecode/MethodCodeGen.java
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src/main/java/bytecode/MethodCodeGen.java
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@ -0,0 +1,16 @@
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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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@ -8,10 +8,23 @@ import org.antlr.v4.runtime.tree.ParseTree;
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import parser.generated.SimpleJavaLexer;
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import parser.generated.SimpleJavaLexer;
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import parser.generated.SimpleJavaParser;
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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 class Main {
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public static void main(String[] args) throws Exception {
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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 = null;
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CharStream codeCharStream = CharStreams.fromString("class Example { }");
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try {
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codeCharStream = CharStreams.fromPath(Paths.get("path/to/your/file.txt"));
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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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SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
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CommonTokenStream tokens = new CommonTokenStream(lexer);
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CommonTokenStream tokens = new CommonTokenStream(lexer);
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SimpleJavaParser parser = new SimpleJavaParser(tokens);
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SimpleJavaParser parser = new SimpleJavaParser(tokens);
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@ -22,8 +35,10 @@ public class Main {
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ProgramNode ast = (ProgramNode) builder.visit(tree); // build the AST
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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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// 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("Parsed " + ast.classes.size() + " classes with identifiers/names:");
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System.out.println(ast.classes.getFirst().identifier);
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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 byteCodeGenerator = new ByteCodeGenerator();
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byteCodeGenerator.generateByteCode(ast);
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byteCodeGenerator.generateByteCode(ast);
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