bytecode
This commit is contained in:
Fayez Abu Alia
parent
9918e78f97
commit
9a233e437b
414
src/de/dhbwstuttgart/bytecode/BytecodeGen.java
Normal file
414
src/de/dhbwstuttgart/bytecode/BytecodeGen.java
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@ -0,0 +1,414 @@
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package de.dhbwstuttgart.bytecode;
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import java.awt.List;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Iterator;
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import org.objectweb.asm.ClassWriter;
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import org.objectweb.asm.FieldVisitor;
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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.Type;
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import de.dhbwstuttgart.parser.SyntaxTreeGenerator.AssignToLocal;
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import de.dhbwstuttgart.syntaxtree.*;
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import de.dhbwstuttgart.syntaxtree.statement.ArgumentList;
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import de.dhbwstuttgart.syntaxtree.statement.Assign;
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import de.dhbwstuttgart.syntaxtree.statement.AssignToField;
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import de.dhbwstuttgart.syntaxtree.statement.Binary;
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import de.dhbwstuttgart.syntaxtree.statement.Block;
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import de.dhbwstuttgart.syntaxtree.statement.CastExpr;
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import de.dhbwstuttgart.syntaxtree.statement.DoStmt;
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import de.dhbwstuttgart.syntaxtree.statement.EmptyStmt;
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import de.dhbwstuttgart.syntaxtree.statement.FieldVar;
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import de.dhbwstuttgart.syntaxtree.statement.ForStmt;
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import de.dhbwstuttgart.syntaxtree.statement.IfStmt;
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import de.dhbwstuttgart.syntaxtree.statement.InstanceOf;
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import de.dhbwstuttgart.syntaxtree.statement.LambdaExpression;
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import de.dhbwstuttgart.syntaxtree.statement.LocalVar;
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import de.dhbwstuttgart.syntaxtree.statement.LocalVarDecl;
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import de.dhbwstuttgart.syntaxtree.statement.MethodCall;
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import de.dhbwstuttgart.syntaxtree.statement.NewArray;
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import de.dhbwstuttgart.syntaxtree.statement.NewClass;
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import de.dhbwstuttgart.syntaxtree.statement.Receiver;
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import de.dhbwstuttgart.syntaxtree.statement.Return;
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import de.dhbwstuttgart.syntaxtree.statement.ReturnVoid;
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import de.dhbwstuttgart.syntaxtree.statement.StaticClassName;
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import de.dhbwstuttgart.syntaxtree.statement.Super;
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import de.dhbwstuttgart.syntaxtree.statement.SuperCall;
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import de.dhbwstuttgart.syntaxtree.statement.This;
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import de.dhbwstuttgart.syntaxtree.statement.UnaryPlus;
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import de.dhbwstuttgart.syntaxtree.statement.WhileStmt;
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import de.dhbwstuttgart.syntaxtree.statement.literal.Literal;
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import de.dhbwstuttgart.syntaxtree.statement.literal.Null;
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import de.dhbwstuttgart.syntaxtree.type.ExtendsWildcardType;
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import de.dhbwstuttgart.syntaxtree.type.GenericRefType;
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import de.dhbwstuttgart.syntaxtree.type.RefType;
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import de.dhbwstuttgart.syntaxtree.type.SuperWildcardType;
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import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
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public class BytecodeGen implements ASTVisitor {
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ClassWriter cw =new ClassWriter(ClassWriter.COMPUTE_FRAMES|ClassWriter.COMPUTE_MAXS);
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// String methDesc;
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String type;
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// stores parameter, local vars and the next index on the local variable table, which use for aload_i, astore_i,...
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HashMap<String, Integer> paramsAndLocals = new HashMap<>();
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byte[] bytecode;
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HashMap<String,byte[]> classFiles;
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public BytecodeGen(HashMap<String,byte[]> classFiles) {
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this.classFiles = classFiles;
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}
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@Override
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public void visit(SourceFile sourceFile) {
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for(ClassOrInterface cl : sourceFile.getClasses()) {
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BytecodeGen classGen = new BytecodeGen(classFiles);
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cl.accept(classGen);
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classGen.writeClass(cl.getClassName().toString());
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}
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}
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private void writeClass(String name) {
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bytecode = cw.toByteArray();
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classFiles.put(name, bytecode);
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}
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public HashMap<String,byte[]> getClassFiles() {
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return classFiles;
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}
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@Override
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public void visit(ClassOrInterface classOrInterface) {
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// access flages??
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cw.visit(Opcodes.V1_8, classOrInterface.getModifiers(), classOrInterface.getClassName().toString()
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, null, classOrInterface.getSuperClass().toString(), null);
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// for each field in the class
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for(Field f : classOrInterface.getFieldDecl()) {
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f.accept(this);
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}
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for(Constructor c : classOrInterface.getConstructors()) {
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c.accept(this);
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}
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for(Method m : classOrInterface.getMethods()) {
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m.accept(this);
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}
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cw.visitSource(classOrInterface.getClassName().toString()+".jav", null);
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}
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@Override
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public void visit(Constructor field) {
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String methDesc = getConsDesc(field);
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MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", methDesc, null, null);
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mv.visitCode();
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BytecodeGenMethod gen = new BytecodeGenMethod(field, mv,paramsAndLocals,true);
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mv.visitInsn(Opcodes.RETURN);
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mv.visitEnd();
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}
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private String getConsDesc(Constructor field) {
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String methDesc;
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methDesc = "(";
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field.getParameterList().accept(this);
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Iterator<FormalParameter> itr = field.getParameterList().iterator();
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while(itr.hasNext()) {
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FormalParameter fp = itr.next();
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methDesc = methDesc + "L"+fp.getType().toString() + ";";
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}
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methDesc = methDesc + ")V";
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return methDesc;
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}
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@Override
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public void visit(Method method) {
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// ParameterList pl = method.getParameterList();
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String methDesc = getMethDesc(method);
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// methDesc = "(";
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// method.getParameterList().accept(this);
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// methDesc = methDesc + ")" + method.getReturnType().toString();
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// create method descriptor (p1,p2,...)RT
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// String methDesc = "(";
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// Iterator<FormalParameter> itr = pl.iterator();
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// while(itr.hasNext()) {
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// FormalParameter fp = itr.next();
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//// fp.getType().accept(this);
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// methDesc = methDesc + "L"+fp.getType().toString() + ";";
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// i++;
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// }
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// methDesc = methDesc + ")" + method.getReturnType().toString();
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MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, method.getName(), methDesc, null, null);
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mv.visitCode();
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BytecodeGenMethod gen = new BytecodeGenMethod(method, mv,paramsAndLocals,false);
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}
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private String getMethDesc(Method method) {
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String methDesc;
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methDesc = "(";
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method.getParameterList().accept(this);
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Iterator<FormalParameter> itr = method.getParameterList().iterator();
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while(itr.hasNext()) {
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FormalParameter fp = itr.next();
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methDesc = methDesc + "L"+fp.getType().toString() + ";";
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}
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methDesc = methDesc + ")" + method.getReturnType().toString();
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return methDesc;
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}
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@Override
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public void visit(ParameterList formalParameters) {
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Iterator<FormalParameter> itr = formalParameters.iterator();
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int i = 1;
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while(itr.hasNext()) {
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FormalParameter fp = itr.next();
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paramsAndLocals.put(fp.getName(), i);
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fp.accept(this);
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i++;
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}
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}
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@Override
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public void visit(FormalParameter formalParameter) {
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formalParameter.getType().accept(this);
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}
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@Override
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public void visit(RefType refType) {
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type = "L"+refType.toString()+";";
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}
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@Override
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public void visit(SuperWildcardType superWildcardType) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(TypePlaceholder typePlaceholder) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(ExtendsWildcardType extendsWildcardType) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(GenericRefType genericRefType) {
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// TODO Auto-generated method stub
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}
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// ??
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@Override
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public void visit(FieldVar fieldVar) {
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// cw.newField(fieldVar.receiver.toString(), fieldVar.fieldVarName.toString(), fieldVar.getType().toString());
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}
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// access flages?? modifiers
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@Override
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public void visit(Field field) {
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FieldVisitor fv = cw.visitField(Opcodes.ACC_PRIVATE, field.getName(), "L"+field.getType()+";", null, null);
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fv.visitEnd();
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}
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@Override
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public void visit(LambdaExpression lambdaExpression) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(Assign assign) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(Binary binary) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(Block block) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(CastExpr castExpr) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(EmptyStmt emptyStmt) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(ForStmt forStmt) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(IfStmt ifStmt) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(InstanceOf instanceOf) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(LocalVar localVar) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(LocalVarDecl localVarDecl) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(MethodCall methodCall) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(NewClass methodCall) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(NewArray newArray) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(Receiver receiver) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(Return aReturn) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(ReturnVoid aReturn) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(StaticClassName staticClassName) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(Super aSuper) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(This aThis) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(UnaryPlus unaryPlus) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(WhileStmt whileStmt) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(DoStmt whileStmt) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(Null aNull) {
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// TODO Auto-generated method stub
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}
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// ???
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@Override
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public void visit(Literal literal) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(ArgumentList argumentList) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(GenericTypeVar genericTypeVar) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(GenericDeclarationList genericTypeVars) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(AssignToField assignLeftSide) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(AssignToLocal assignLeftSide) {
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// TODO Auto-generated method stub
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}
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@Override
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public void visit(SuperCall superCall) {
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// TODO Auto-generated method stub
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}
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}
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242
src/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java
Normal file
242
src/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java
Normal file
@ -0,0 +1,242 @@
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package de.dhbwstuttgart.bytecode;
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import java.util.HashMap;
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import org.objectweb.asm.MethodVisitor;
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import org.objectweb.asm.Opcodes;
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import de.dhbwstuttgart.parser.SyntaxTreeGenerator.AssignToLocal;
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import de.dhbwstuttgart.syntaxtree.Method;
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import de.dhbwstuttgart.syntaxtree.StatementVisitor;
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import de.dhbwstuttgart.syntaxtree.statement.ArgumentList;
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import de.dhbwstuttgart.syntaxtree.statement.Assign;
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import de.dhbwstuttgart.syntaxtree.statement.AssignToField;
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import de.dhbwstuttgart.syntaxtree.statement.Binary;
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import de.dhbwstuttgart.syntaxtree.statement.Block;
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import de.dhbwstuttgart.syntaxtree.statement.CastExpr;
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import de.dhbwstuttgart.syntaxtree.statement.DoStmt;
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import de.dhbwstuttgart.syntaxtree.statement.EmptyStmt;
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import de.dhbwstuttgart.syntaxtree.statement.FieldVar;
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import de.dhbwstuttgart.syntaxtree.statement.ForStmt;
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import de.dhbwstuttgart.syntaxtree.statement.IfStmt;
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import de.dhbwstuttgart.syntaxtree.statement.InstanceOf;
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import de.dhbwstuttgart.syntaxtree.statement.LambdaExpression;
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import de.dhbwstuttgart.syntaxtree.statement.LocalVar;
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import de.dhbwstuttgart.syntaxtree.statement.LocalVarDecl;
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import de.dhbwstuttgart.syntaxtree.statement.MethodCall;
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import de.dhbwstuttgart.syntaxtree.statement.NewArray;
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import de.dhbwstuttgart.syntaxtree.statement.NewClass;
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import de.dhbwstuttgart.syntaxtree.statement.Receiver;
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import de.dhbwstuttgart.syntaxtree.statement.Return;
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import de.dhbwstuttgart.syntaxtree.statement.ReturnVoid;
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import de.dhbwstuttgart.syntaxtree.statement.Statement;
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import de.dhbwstuttgart.syntaxtree.statement.StaticClassName;
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import de.dhbwstuttgart.syntaxtree.statement.Super;
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import de.dhbwstuttgart.syntaxtree.statement.SuperCall;
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import de.dhbwstuttgart.syntaxtree.statement.This;
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import de.dhbwstuttgart.syntaxtree.statement.UnaryPlus;
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import de.dhbwstuttgart.syntaxtree.statement.WhileStmt;
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import de.dhbwstuttgart.syntaxtree.statement.literal.Literal;
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import de.dhbwstuttgart.syntaxtree.statement.literal.Null;
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public class BytecodeGenMethod implements StatementVisitor{
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private Method m;
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private MethodVisitor mv;
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private HashMap<String, Integer> paramsAndLocals = new HashMap<>();
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public BytecodeGenMethod(Method m, MethodVisitor mv, HashMap<String, Integer> paramsAndLocals,
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boolean isConstructor) {
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if(isConstructor) {
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// mv.visitVarInsn(Opcodes.ALOAD, 0);
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// mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
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}
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this.m = m;
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this.mv = mv;
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this.paramsAndLocals = paramsAndLocals;
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this.m.block.accept(this);
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}
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@Override
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public void visit(Block block) {
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for(Statement stmt : block.getStatements()) {
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stmt.accept(this);
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}
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}
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@Override
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public void visit(SuperCall superCall) {
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superCall.receiver.accept(this);
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superCall.arglist.accept(this);
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mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", superCall.name, "()V");
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}
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// ??
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@Override
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public void visit(LocalVar localVar) {
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||||
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||||
}
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||||
// ??
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||||
@Override
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||||
public void visit(LocalVarDecl localVarDecl) {
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||||
// TODO Auto-generated method stub
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||||
Integer i;
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||||
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||||
}
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||||
// int c = 5;???
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@Override
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public void visit(Assign assign) {
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assign.rightSide.accept(this);
|
||||
// int index = paramsAndLocals.get(assign.lefSide.getName());
|
||||
// mv.visitVarInsn(Opcodes.ASTORE, index);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(Binary binary) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(LambdaExpression lambdaExpression) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(CastExpr castExpr) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(EmptyStmt emptyStmt) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(FieldVar fieldVar) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(ForStmt forStmt) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(IfStmt ifStmt) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(InstanceOf instanceOf) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(MethodCall methodCall) {
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(NewClass methodCall) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(NewArray newArray) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(Receiver receiver) {
|
||||
receiver.expr.accept(this);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(Return aReturn) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(ReturnVoid aReturn) {
|
||||
mv.visitInsn(Opcodes.RETURN);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(StaticClassName staticClassName) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(Super aSuper) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(This aThis) {
|
||||
mv.visitVarInsn(Opcodes.ALOAD, 0);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(UnaryPlus unaryPlus) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(WhileStmt whileStmt) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(DoStmt whileStmt) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(Null aNull) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(Literal literal) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(ArgumentList argumentList) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(AssignToField assignLeftSide) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void visit(AssignToLocal assignLeftSide) {
|
||||
// TODO Auto-generated method stub
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
81
test/bytecode/JavaTXCompilerTest.java
Normal file
81
test/bytecode/JavaTXCompilerTest.java
Normal file
@ -0,0 +1,81 @@
|
||||
package bytecode;
|
||||
|
||||
import de.dhbwstuttgart.bytecode.BytecodeGen;
|
||||
import de.dhbwstuttgart.core.JavaTXCompiler;
|
||||
import de.dhbwstuttgart.exceptions.DebugException;
|
||||
import de.dhbwstuttgart.syntaxtree.SourceFile;
|
||||
import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
|
||||
import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
|
||||
import de.dhbwstuttgart.syntaxtree.visual.ASTPrinter;
|
||||
import de.dhbwstuttgart.syntaxtree.visual.ASTTypePrinter;
|
||||
import de.dhbwstuttgart.syntaxtree.visual.OutputGenerator;
|
||||
import de.dhbwstuttgart.typedeployment.TypeInsert;
|
||||
import de.dhbwstuttgart.typedeployment.TypeInsertFactory;
|
||||
import de.dhbwstuttgart.typedeployment.TypeInsertPoint;
|
||||
import de.dhbwstuttgart.typeinference.ResultSet;
|
||||
import org.junit.Test;
|
||||
|
||||
import java.io.File;
|
||||
import java.io.FileNotFoundException;
|
||||
import java.io.FileOutputStream;
|
||||
import java.io.IOException;
|
||||
import java.nio.charset.Charset;
|
||||
import java.nio.charset.StandardCharsets;
|
||||
import java.nio.file.Files;
|
||||
import java.nio.file.Paths;
|
||||
import java.util.ArrayList;
|
||||
import java.util.HashMap;
|
||||
import java.util.List;
|
||||
import java.util.Set;
|
||||
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
public class JavaTXCompilerTest extends JavaTXCompiler {
|
||||
|
||||
private static final String rootDirectory = System.getProperty("user.dir")+"/test/javFiles/";
|
||||
private static final List<File> filesToTest = new ArrayList<>();
|
||||
|
||||
@Test
|
||||
public void test() throws IOException, java.lang.ClassNotFoundException {
|
||||
filesToTest.add(new File(rootDirectory+"EmptyClass.jav"));
|
||||
for(File f : filesToTest){
|
||||
SourceFile sf = this.parse(f);
|
||||
String content = readFile(f.getPath(), StandardCharsets.UTF_8);
|
||||
HashMap<String,byte[]> bytecode = this.getBytecode(sf);
|
||||
this.writeClassFile(bytecode, "EmptyClass");
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
public HashMap<String,byte[]> getBytecode(SourceFile sf) {
|
||||
HashMap<String,byte[]> classFiles = new HashMap<>();
|
||||
BytecodeGen bytecodeGen = new BytecodeGen(classFiles);
|
||||
bytecodeGen.visit(sf);
|
||||
return bytecodeGen.getClassFiles();
|
||||
}
|
||||
|
||||
public void writeClassFile(HashMap<String,byte[]> classFiles, String name) {
|
||||
FileOutputStream output;
|
||||
byte[] bytecode = classFiles.get(name);
|
||||
try {
|
||||
System.out.println("generating .class file");
|
||||
output = new FileOutputStream(new File(System.getProperty("user.dir") + "/testBytecode/" +name+".class"));
|
||||
output.write(bytecode);
|
||||
output.close();
|
||||
System.out.println(".class file generated");
|
||||
} catch (FileNotFoundException e) {
|
||||
e.printStackTrace();
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
|
||||
static String readFile(String path, Charset encoding)
|
||||
throws IOException
|
||||
{
|
||||
byte[] encoded = Files.readAllBytes(Paths.get(path));
|
||||
return new String(encoded, encoding);
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user