Package javassist.compiler

Examples of javassist.compiler.Javac

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        throws CannotCompileException
    {
        CtClass cc = declaringClass;
        cc.checkModify();
        try {
            Javac jv = new Javac(cc);
            if (delegateMethod != null)
                jv.recordProceed(delegateObj, delegateMethod);

            Bytecode b = jv.compileBody(this, src);
            methodInfo.setCodeAttribute(b.toCodeAttribute());
            methodInfo.setAccessFlags(methodInfo.getAccessFlags()
                                      & ~AccessFlag.ABSTRACT);
            methodInfo.rebuildStackMapIf6(cc.getClassPool(), cc.getClassFile2());
        }
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        CodeAttribute ca = methodInfo.getCodeAttribute();
        if (ca == null)
            throw new CannotCompileException("no method body");

        CodeIterator iterator = ca.iterator();
        Javac jv = new Javac(cc);
        try {
            int nvars = jv.recordParams(getParameterTypes(),
                                        Modifier.isStatic(getModifiers()));
            jv.recordParamNames(ca, nvars);
            jv.recordLocalVariables(ca, 0);
            jv.compileStmnt(src);
            Bytecode b = jv.getBytecode();
            int stack = b.getMaxStack();
            int locals = b.getMaxLocals();

            if (stack > ca.getMaxStack())
                ca.setMaxStack(stack);
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        CodeIterator iterator = ca.iterator();
        int retAddr = ca.getMaxLocals();
        Bytecode b = new Bytecode(pool, 0, retAddr + 1);
        b.setStackDepth(ca.getMaxStack() + 1);
        Javac jv = new Javac(b, cc);
        try {
            int nvars = jv.recordParams(getParameterTypes(),
                                        Modifier.isStatic(getModifiers()));
            jv.recordParamNames(ca, nvars);
            CtClass rtype = getReturnType0();
            int varNo = jv.recordReturnType(rtype, true);
            jv.recordLocalVariables(ca, 0);

            // finally clause for exceptions
            int handlerLen = insertAfterHandler(asFinally, b, rtype, varNo,
                                                jv, src);
            // finally clause for normal termination
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        ConstPool cp = methodInfo.getConstPool();
        CodeAttribute ca = methodInfo.getCodeAttribute();
        CodeIterator iterator = ca.iterator();
        Bytecode b = new Bytecode(cp, ca.getMaxStack(), ca.getMaxLocals());
        b.setStackDepth(1);
        Javac jv = new Javac(b, cc);
        try {
            jv.recordParams(getParameterTypes(),
                            Modifier.isStatic(getModifiers()));
            int var = jv.recordVariable(exceptionType, exceptionName);
            b.addAstore(var);
            jv.compileStmnt(src);

            int stack = b.getMaxStack();
            int locals = b.getMaxLocals();

            if (stack > ca.getMaxStack())
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            return lineNum;

        CtClass cc = declaringClass;
        cc.checkModify();
        CodeIterator iterator = ca.iterator();
        Javac jv = new Javac(cc);
        try {
            jv.recordLocalVariables(ca, index);
            jv.recordParams(getParameterTypes(),
                            Modifier.isStatic(getModifiers()));
            jv.setMaxLocals(ca.getMaxLocals());
            jv.compileStmnt(src);
            Bytecode b = jv.getBytecode();
            int locals = b.getMaxLocals();
            int stack = b.getMaxStack();
            ca.setMaxLocals(locals);

            /* We assume that there is no values in the operand stack
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                    // Move to the next instruction (insertionPc)
                    CodeIterator iterator = codeAttribute.iterator();
                    iterator.move(pc);
                    Integer insertionPc = iterator.next();

                    Javac jv = new Javac(ctClass);

                    // Compile the code snippet
                    jv.recordLocalVariables(codeAttribute, insertionPc);
                    jv.recordParams(method.getParameterTypes(), Modifier.isStatic(method.getModifiers()));
                    jv.setMaxLocals(codeAttribute.getMaxLocals());
                    jv.compileStmnt("play.classloading.enhancers.LocalvariablesNamesEnhancer.LocalVariablesNamesTracer.addVariable(\"" + aliasedName + "\", " + name + ");");

                    Bytecode b = jv.getBytecode();
                    int locals = b.getMaxLocals();
                    int stack = b.getMaxStack();
                    codeAttribute.setMaxLocals(locals);
                    if (stack > codeAttribute.getMaxStack()) {
                        codeAttribute.setMaxStack(stack);
                    }
                    iterator.insert(insertionPc, b.get());
                    iterator.insert(b.getExceptionTable(), insertionPc);


                    // Then we need to trace each affectation to the variable
                    CodeIterator codeIterator = codeAttribute.iterator();

                    // Bon chaque instruction de cette méthode
                    while (codeIterator.hasNext()) {
                        int index = codeIterator.next();
                        int op = codeIterator.byteAt(index);

                        // DEBUG
                        // printOp(op);

                        int varNumber = -1;
                        // The variable changes
                        if (storeByCode.containsKey(op)) {
                            varNumber = storeByCode.get(op);
                            if (varNumber == -2) {
                                varNumber = codeIterator.byteAt(index + 1);
                            }
                        }

                        // Si c'est un store de la variable en cours d'examination
                        // et que c'est dans la frame d'utilisation de cette variable on trace l'affectation.
                        // (en fait la frame commence à localVariableAttribute.startPc(i)-1 qui est la première affectation
                        //  mais aussi l'initialisation de la variable qui est deja tracé plus haut, donc on commence à localVariableAttribute.startPc(i))
                        if (varNumber == localVariableAttribute.index(i) && index >= localVariableAttribute.startPc(i) && index < localVariableAttribute.startPc(i) + localVariableAttribute.codeLength(i)) {

                            jv.compileStmnt("play.classloading.enhancers.LocalvariablesNamesEnhancer.LocalVariablesNamesTracer.addVariable(\"" + aliasedName + "\", " + name + ");");

                            b = jv.getBytecode();
                            locals = b.getMaxLocals();
                            stack = b.getMaxStack();
                            codeAttribute.setMaxLocals(locals);

                            if (stack > codeAttribute.getMaxStack()) {
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                    // Move to the next instruction (insertionPc)
                    CodeIterator iterator = codeAttribute.iterator();
                    iterator.move(pc);
                    Integer insertionPc = iterator.next();

                    Javac jv = new Javac(ctClass);

                    // Compile the code snippet
                    jv.recordLocalVariables(codeAttribute, insertionPc);
                    jv.recordParams(method.getParameterTypes(), Modifier.isStatic(method.getModifiers()));
                    jv.setMaxLocals(codeAttribute.getMaxLocals());
                    jv.compileStmnt("play.classloading.enhancers.LocalvariablesNamesEnhancer.LocalVariablesNamesTracer.addVariable(\"" + aliasedName + "\", " + name + ");");

                    Bytecode b = jv.getBytecode();
                    int locals = b.getMaxLocals();
                    int stack = b.getMaxStack();
                    codeAttribute.setMaxLocals(locals);
                    if (stack > codeAttribute.getMaxStack()) {
                        codeAttribute.setMaxStack(stack);
                    }
                    iterator.insert(insertionPc, b.get());
                    iterator.insert(b.getExceptionTable(), insertionPc);


                    // Then we need to trace each affectation to the variable
                    CodeIterator codeIterator = codeAttribute.iterator();

                    // Bon chaque instruction de cette méthode
                    while (codeIterator.hasNext()) {
                        int index = codeIterator.next();
                        int op = codeIterator.byteAt(index);

                        // DEBUG
                        // printOp(op);

                        int varNumber = -1;
                        // The variable changes
                        if (storeByCode.containsKey(op)) {
                            varNumber = storeByCode.get(op);
                            if (varNumber == -2) {
                                varNumber = codeIterator.byteAt(index + 1);
                            }
                        }

                        // Si c'est un store de la variable en cours d'examination
                        // et que c'est dans la frame d'utilisation de cette variable on trace l'affectation.
                        // (en fait la frame commence à localVariableAttribute.startPc(i)-1 qui est la première affectation
                        //  mais aussi l'initialisation de la variable qui est deja tracé plus haut, donc on commence à localVariableAttribute.startPc(i))
                        if (varNumber == localVariableAttribute.index(i) && index >= localVariableAttribute.startPc(i) && index < localVariableAttribute.startPc(i) + localVariableAttribute.codeLength(i)) {

                            jv.compileStmnt("play.classloading.enhancers.LocalvariablesNamesEnhancer.LocalVariablesNamesTracer.addVariable(\"" + aliasedName + "\", " + name + ");");

                            b = jv.getBytecode();
                            locals = b.getMaxLocals();
                            stack = b.getMaxStack();
                            codeAttribute.setMaxLocals(locals);

                            if (stack > codeAttribute.getMaxStack()) {
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        throws CannotCompileException
    {
        CtClass cc = declaringClass;
        cc.checkModify();
        try {
            Javac jv = new Javac(cc);
            if (delegateMethod != null)
                jv.recordProceed(delegateObj, delegateMethod);

            Bytecode b = jv.compileBody(this, src);
            methodInfo.setCodeAttribute(b.toCodeAttribute());
            methodInfo.setAccessFlags(methodInfo.getAccessFlags()
                                      & ~AccessFlag.ABSTRACT);
            methodInfo.rebuildStackMapIf6(cc.getClassPool(), cc.getClassFile2());
        }
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        CodeAttribute ca = methodInfo.getCodeAttribute();
        if (ca == null)
            throw new CannotCompileException("no method body");

        CodeIterator iterator = ca.iterator();
        Javac jv = new Javac(cc);
        try {
            int nvars = jv.recordParams(getParameterTypes(),
                                        Modifier.isStatic(getModifiers()));
            jv.recordParamNames(ca, nvars);
            jv.recordLocalVariables(ca, 0);
            jv.compileStmnt(src);
            Bytecode b = jv.getBytecode();
            int stack = b.getMaxStack();
            int locals = b.getMaxLocals();

            if (stack > ca.getMaxStack())
                ca.setMaxStack(stack);
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        CodeIterator iterator = ca.iterator();
        int retAddr = ca.getMaxLocals();
        Bytecode b = new Bytecode(pool, 0, retAddr + 1);
        b.setStackDepth(ca.getMaxStack() + 1);
        Javac jv = new Javac(b, cc);
        try {
            int nvars = jv.recordParams(getParameterTypes(),
                                        Modifier.isStatic(getModifiers()));
            jv.recordParamNames(ca, nvars);
            CtClass rtype = getReturnType0();
            int varNo = jv.recordReturnType(rtype, true);
            jv.recordLocalVariables(ca, 0);

            // finally clause for exceptions
            int handlerLen = insertAfterHandler(asFinally, b, rtype, varNo,
                                                jv, src);
            // finally clause for normal termination
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Related Classes of javassist.compiler.Javac

  • javassist.bytecode.Bytecode
  • javassist.bytecode.LocalVariableAttribute
  • javassist.compiler.ast.ASTList
  • javassist.compiler.ast.ASTree
  • javassist.compiler.ast.Declarator
  • javassist.compiler.ast.Expr
  • javassist.compiler.ast.Member
  • javassist.compiler.ast.Stmnt
  • javassist.compiler.ast.Symbol
  • javassist.CtBehavior
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