Example usage for org.objectweb.asm Opcodes GOTO

List of usage examples for org.objectweb.asm Opcodes GOTO

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes GOTO.

Prototype

int GOTO

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Usage

From source file:org.adjective.stout.tools.StackVisualiserMethodVisitor.java

License:Apache License

public void visitJumpInsn(int opcode, Label label) {
    switch (opcode) {
    case Opcodes.IFEQ:
        pop(Type.INT_TYPE, Type.BOOLEAN_TYPE);
        break;//from   w  w  w  .j  a v  a 2  s.  co m
    case Opcodes.GOTO:
        break;
    default:
        throw new IllegalArgumentException("Unsupported opcode " + OPCODES[opcode]);
    }
    print(opcode, label.toString());
    label(label, OPCODES[opcode]);
}

From source file:org.apache.cxf.binding.corba.utils.CorbaAnyHelper.java

License:Apache License

private static void addReadOverride(ClassWriter cw) {
    MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "read_value",
            "(Lorg/omg/CORBA/portable/InputStream;Lorg/omg/CORBA/TypeCode;)V", null, null);
    mv.visitCode();/*  ww  w .ja v  a 2s . c om*/
    Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitLineNumber(54, l0);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, "org/apache/cxf/binding/corba/utils/FixedAnyImpl", "obj",
            "Lorg/omg/CORBA/portable/Streamable;");
    Label l1 = new Label();
    mv.visitJumpInsn(Opcodes.IFNULL, l1);
    Label l2 = new Label();
    mv.visitLabel(l2);
    mv.visitLineNumber(55, l2);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, "org/apache/cxf/binding/corba/utils/FixedAnyImpl", "obj",
            "Lorg/omg/CORBA/portable/Streamable;");
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "org/omg/CORBA/portable/Streamable", "_read",
            "(Lorg/omg/CORBA/portable/InputStream;)V");
    Label l3 = new Label();
    mv.visitJumpInsn(Opcodes.GOTO, l3);
    mv.visitLabel(l1);
    mv.visitLineNumber(57, l1);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitVarInsn(Opcodes.ALOAD, 2);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "com/sun/corba/se/impl/corba/AnyImpl", "read_value",
            "(Lorg/omg/CORBA/portable/InputStream;Lorg/omg/CORBA/TypeCode;)V");
    mv.visitLabel(l3);
    mv.visitLineNumber(59, l3);
    mv.visitInsn(Opcodes.RETURN);
    Label l4 = new Label();
    mv.visitLabel(l4);
    mv.visitLocalVariable("this", "Lorg/apache/cxf/binding/corba/utils/FixedAnyImpl;", null, l0, l4, 0);
    mv.visitLocalVariable("is", "Lorg/omg/CORBA/portable/InputStream;", null, l0, l4, 1);
    mv.visitLocalVariable("t", "Lorg/omg/CORBA/TypeCode;", null, l0, l4, 2);
    mv.visitMaxs(3, 3);
    mv.visitEnd();
}

From source file:org.apache.cxf.binding.corba.utils.CorbaAnyHelper.java

License:Apache License

private static void addWriteOverride(ClassWriter cw) {
    MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "write_value",
            "(Lorg/omg/CORBA/portable/OutputStream;)V", null, null);
    mv.visitCode();/*from  ww  w  .  jav  a2 s.co  m*/
    Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitLineNumber(61, l0);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, "org/apache/cxf/binding/corba/utils/FixedAnyImpl", "obj",
            "Lorg/omg/CORBA/portable/Streamable;");
    Label l1 = new Label();
    mv.visitJumpInsn(Opcodes.IFNULL, l1);
    Label l2 = new Label();
    mv.visitLabel(l2);
    mv.visitLineNumber(62, l2);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, "org/apache/cxf/binding/corba/utils/FixedAnyImpl", "obj",
            "Lorg/omg/CORBA/portable/Streamable;");
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "org/omg/CORBA/portable/Streamable", "_write",
            "(Lorg/omg/CORBA/portable/OutputStream;)V");
    Label l3 = new Label();
    mv.visitJumpInsn(Opcodes.GOTO, l3);
    mv.visitLabel(l1);
    mv.visitLineNumber(64, l1);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "com/sun/corba/se/impl/corba/AnyImpl", "write_value",
            "(Lorg/omg/CORBA/portable/OutputStream;)V");
    mv.visitLabel(l3);
    mv.visitLineNumber(66, l3);
    mv.visitInsn(Opcodes.RETURN);
    Label l4 = new Label();
    mv.visitLabel(l4);
    mv.visitLocalVariable("this", "Lorg/apache/cxf/binding/corba/utils/FixedAnyImpl;", null, l0, l4, 0);
    mv.visitLocalVariable("os", "Lorg/omg/CORBA/portable/OutputStream;", null, l0, l4, 1);
    mv.visitMaxs(2, 2);
    mv.visitEnd();

}

From source file:org.apache.cxf.jaxb.WrapperHelperCompiler.java

License:Apache License

private void doCollection(MethodVisitor mv, int x) {
    // List aVal = obj.getA();
    // List newA = (List)lst.get(99);
    // if (aVal == null) {
    // obj.setA(newA);
    // } else if (newA != null) {
    // aVal.addAll(newA);
    // }/*w  w  w  . ja va  2 s . c o  m*/

    Label l3 = new Label();
    mv.visitLabel(l3);
    mv.visitLineNumber(114, l3);

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, periodToSlashes(wrapperType.getName()), getMethods[x].getName(),
            getMethodSignature(getMethods[x]));
    mv.visitVarInsn(Opcodes.ASTORE, 3);
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitIntInsn(Opcodes.BIPUSH, x);
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/List", "get", "(I)Ljava/lang/Object;");
    mv.visitTypeInsn(Opcodes.CHECKCAST, "java/util/List");
    mv.visitVarInsn(Opcodes.ASTORE, 4);
    mv.visitVarInsn(Opcodes.ALOAD, 3);
    Label nonNullLabel = new Label();
    mv.visitJumpInsn(Opcodes.IFNONNULL, nonNullLabel);

    if (setMethods[x] == null) {
        mv.visitTypeInsn(Opcodes.NEW, "java/lang/RuntimeException");
        mv.visitInsn(Opcodes.DUP);
        mv.visitLdcInsn(getMethods[x].getName() + " returned null and there isn't a set method.");
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/RuntimeException", "<init>",
                "(Ljava/lang/String;)V");
        mv.visitInsn(Opcodes.ATHROW);
    } else {
        mv.visitVarInsn(Opcodes.ALOAD, 2);
        mv.visitVarInsn(Opcodes.ALOAD, 4);
        mv.visitTypeInsn(Opcodes.CHECKCAST, getMethods[x].getReturnType().getName().replace('.', '/'));
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, periodToSlashes(wrapperType.getName()),
                setMethods[x].getName(), getMethodSignature(setMethods[x]));
    }
    Label jumpOverLabel = new Label();
    mv.visitJumpInsn(Opcodes.GOTO, jumpOverLabel);
    mv.visitLabel(nonNullLabel);
    mv.visitLineNumber(106, nonNullLabel);

    mv.visitVarInsn(Opcodes.ALOAD, 4);
    mv.visitJumpInsn(Opcodes.IFNULL, jumpOverLabel);
    mv.visitVarInsn(Opcodes.ALOAD, 3);
    mv.visitVarInsn(Opcodes.ALOAD, 4);
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/List", "addAll", "(Ljava/util/Collection;)Z");
    mv.visitInsn(Opcodes.POP);
    mv.visitLabel(jumpOverLabel);
    mv.visitLineNumber(107, jumpOverLabel);
}

From source file:org.apache.s4.core.gen.OverloadDispatcherGenerator.java

License:Apache License

private void generateEventDispatchMethod(ClassWriter cw, String dispatchMethodName,
        List<Hierarchy> eventHierarchies, String processEventMethodName) {
    MethodVisitor mv2 = cw.visitMethod(ACC_PUBLIC, dispatchMethodName,
            "(" + Type.getType(ProcessingElement.class).getDescriptor()
                    + Type.getType(Event.class).getDescriptor() + ")V",
            null, null);/*from  w ww.  j  av  a2 s .c om*/
    mv2.visitCode();
    Label l3 = new Label();
    mv2.visitLabel(l3);
    mv2.visitVarInsn(ALOAD, 1);
    mv2.visitTypeInsn(CHECKCAST, Type.getInternalName(targetClass));
    mv2.visitVarInsn(ASTORE, 3);
    boolean first = true;
    Label aroundLabel = new Label();
    for (Hierarchy hierarchy : eventHierarchies) {
        if (first) {
            Label l4 = new Label();
            mv2.visitLabel(l4);
        }
        mv2.visitVarInsn(ALOAD, 2);
        mv2.visitTypeInsn(INSTANCEOF, Type.getInternalName(hierarchy.getTop()));

        Label l5 = new Label();
        mv2.visitJumpInsn(IFEQ, l5);

        Label l6 = new Label();
        mv2.visitLabel(l6);
        mv2.visitVarInsn(ALOAD, 3);
        mv2.visitVarInsn(ALOAD, 2);
        mv2.visitTypeInsn(CHECKCAST, Type.getInternalName(hierarchy.getTop()));
        mv2.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(targetClass), processEventMethodName,
                "(" + Type.getDescriptor(hierarchy.getTop()) + ")V");
        mv2.visitJumpInsn(Opcodes.GOTO, aroundLabel);
        mv2.visitLabel(l5);

        if (first) {
            mv2.visitFrame(F_APPEND, 1, new Object[] { Type.getInternalName(targetClass) }, 0, null);
            first = false;
        } else {
            mv2.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        }
    }
    addErrorLogStatement(mv2);
    if (eventHierarchies.size() > 0) {
        mv2.visitLabel(aroundLabel);
        mv2.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    }
    mv2.visitInsn(RETURN);
    Label l8 = new Label();
    mv2.visitLabel(l8);
    mv2.visitLocalVariable("pe", Type.getDescriptor(ProcessingElement.class), null, l3, l8, 1);
    mv2.visitLocalVariable("event", Type.getDescriptor(Event.class), null, l3, l8, 2);
    mv2.visitLocalVariable("typedPE", Type.getDescriptor(targetClass), null, l3, l8, 3);
    mv2.visitMaxs(4, 4);
    mv2.visitEnd();
}

From source file:org.decojer.cavaj.readers.asm.ReadMethodVisitor.java

License:Open Source License

@Override
public void visitJumpInsn(final int opcode, final Label label) {
    T t = null;//w w  w.j  av  a 2s .  c  om
    Object oValue = null;

    final int targetPc = getPc(label);

    switch (opcode) {
    /********
     * GOTO *
     ********/
    case Opcodes.GOTO: {
        final GOTO op = new GOTO(this.ops.size(), opcode, this.line);
        add(op);
        op.setTargetPc(targetPc);
        if (targetPc < 0) {
            getUnresolved(label).add(op);
        }
        break;
    }
    /********
     * JCMP *
     ********/
    case Opcodes.IF_ACMPEQ:
        t = T.REF;
        oValue = CmpType.T_EQ;
        // fall through
    case Opcodes.IF_ACMPNE:
        if (t == null) {
            t = T.REF;
            oValue = CmpType.T_NE;
        }
        // fall through
    case Opcodes.IF_ICMPEQ:
        if (t == null) {
            t = T.AINT; // boolean too
            oValue = CmpType.T_EQ;
        }
        // fall through
    case Opcodes.IF_ICMPGE:
        if (t == null) {
            t = T.INT;
            oValue = CmpType.T_GE;
        }
        // fall through
    case Opcodes.IF_ICMPGT:
        if (t == null) {
            t = T.INT;
            oValue = CmpType.T_GT;
        }
        // fall through
    case Opcodes.IF_ICMPLE:
        if (t == null) {
            t = T.INT;
            oValue = CmpType.T_LE;
        }
        // fall through
    case Opcodes.IF_ICMPLT:
        if (t == null) {
            t = T.INT;
            oValue = CmpType.T_LT;
        }
        // fall through
    case Opcodes.IF_ICMPNE:
        if (t == null) {
            t = T.AINT; // boolean too
            oValue = CmpType.T_NE;
        } {
        assert oValue instanceof CmpType;
        final JCMP op = new JCMP(this.ops.size(), opcode, this.line, t, (CmpType) oValue);
        add(op);
        op.setTargetPc(targetPc);
        if (targetPc < 0) {
            getUnresolved(label).add(op);
        }
    }
        break;
    /********
     * JCND *
     ********/
    case Opcodes.IFNULL:
        t = T.REF;
        oValue = CmpType.T_EQ;
        // fall through
    case Opcodes.IFNONNULL:
        if (t == null) {
            t = T.REF;
            oValue = CmpType.T_NE;
        }
        // fall through
    case Opcodes.IFEQ:
        if (t == null) {
            t = T.AINT; // boolean too
            oValue = CmpType.T_EQ;
        }
        // fall through
    case Opcodes.IFGE:
        if (t == null) {
            t = T.INT;
            oValue = CmpType.T_GE;
        }
        // fall through
    case Opcodes.IFGT:
        if (t == null) {
            t = T.INT;
            oValue = CmpType.T_GT;
        }
        // fall through
    case Opcodes.IFLE:
        if (t == null) {
            t = T.INT;
            oValue = CmpType.T_LE;
        }
        // fall through
    case Opcodes.IFLT:
        if (t == null) {
            t = T.INT;
            oValue = CmpType.T_LT;
        }
        // fall through
    case Opcodes.IFNE:
        if (t == null) {
            t = T.AINT; // boolean too
            oValue = CmpType.T_NE;
        } {
        assert oValue instanceof CmpType;
        final JCND op = new JCND(this.ops.size(), opcode, this.line, t, (CmpType) oValue);
        add(op);
        op.setTargetPc(targetPc);
        if (targetPc < 0) {
            getUnresolved(label).add(op);
        }
    }
        break;
    /*******
     * JSR *
     *******/
    case Opcodes.JSR: {
        final JSR op = new JSR(this.ops.size(), opcode, this.line);
        add(op);
        op.setTargetPc(targetPc);
        if (targetPc < 0) {
            getUnresolved(label).add(op);
        }
        break;
    }
    default:
        log.warn(getM() + ": Unknown jump insn opcode '" + opcode + "'!");
    }
}

From source file:org.eclipse.objectteams.otredyn.bytecode.asm.AbstractCreateDispatchCodeAdapter.java

License:Open Source License

protected InsnList createInstructionsToCheackTeams(MethodNode method) {
    // if (teams == null) {
    //       break;
    // }//w  w  w .java  2 s.com
    InsnList instructions = new InsnList();
    instructions.add(new InsnNode(Opcodes.DUP));
    LabelNode label = new LabelNode();
    instructions.add(new JumpInsnNode(Opcodes.IFNONNULL, label));
    instructions.add(new InsnNode(Opcodes.POP));
    instructions.add(new JumpInsnNode(Opcodes.GOTO, findBreakLabel(method.instructions)));
    instructions.add(label);
    return instructions;
}

From source file:org.eclipse.objectteams.otredyn.bytecode.asm.AddGlobalTeamActivationAdapter.java

License:Open Source License

@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
    synchronized (AddGlobalTeamActivationAdapter.class) {
        if (!done && isMainMethod(name, desc, access)) {
            done = true;//from www.ja va2  s. c om
            final MethodVisitor methodVisitor = cv.visitMethod(access, name, desc, null, null);
            return new AdviceAdapter(this.api, methodVisitor, access, name, desc) {
                @Override
                protected void onMethodEnter() {
                    List<String> teams = getTeamsFromConfigFile();
                    for (String aTeam : teams) {
                        Label start, end, typeHandler, ctorHandler, after;

                        String aTeamSlash = aTeam.replace('.', '/');

                        // new SomeTeam():
                        methodVisitor.visitLabel(start = new Label());
                        methodVisitor.visitTypeInsn(Opcodes.NEW, aTeamSlash);
                        //       .activate(Team.ALL_THREADS):
                        methodVisitor.visitInsn(Opcodes.DUP);
                        methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, aTeamSlash, "<init>", "()V",
                                false);
                        methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, ClassNames.TEAM_SLASH, "ALL_THREADS",
                                "Ljava/lang/Thread;");
                        methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, aTeamSlash, "activate",
                                "(Ljava/lang/Thread;)V", false);

                        methodVisitor.visitLabel(end = new Label());
                        methodVisitor.visitJumpInsn(Opcodes.GOTO, after = new Label());

                        // catch (ClassNotFoundException, NoClassDefFoundError):
                        //   System.err.println(...)
                        methodVisitor.visitLabel(typeHandler = new Label());
                        methodVisitor.visitInsn(Opcodes.POP); // discard the exception
                        methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err",
                                "Ljava/io/PrintStream;");
                        methodVisitor.visitLdcInsn("Config error: Team class '" + aTeam + "' in config file '"
                                + TEAM_CONFIG_FILE + "' can not be found!");
                        methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println",
                                "(Ljava/lang/String;)V", false);
                        methodVisitor.visitJumpInsn(Opcodes.GOTO, after);
                        methodVisitor.visitTryCatchBlock(start, end, typeHandler,
                                "java/lang/ClassNotFoundException");
                        // dup to avoid stackmap errors (ASM bug at 1.8)
                        methodVisitor.visitLabel(typeHandler = new Label());
                        methodVisitor.visitInsn(Opcodes.POP); // discard the exception
                        methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err",
                                "Ljava/io/PrintStream;");
                        methodVisitor.visitLdcInsn("Config error: Team class '" + aTeam + "' in config file '"
                                + TEAM_CONFIG_FILE + "' can not be found!");
                        methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println",
                                "(Ljava/lang/String;)V", false);
                        methodVisitor.visitJumpInsn(Opcodes.GOTO, after);
                        //
                        methodVisitor.visitTryCatchBlock(start, end, typeHandler,
                                "java/lang/NoClassDefFoundError");

                        // catch (NoSuchMethodError):
                        //   System.err.println(...)
                        methodVisitor.visitLabel(ctorHandler = new Label());
                        methodVisitor.visitInsn(Opcodes.POP); // discard the exception
                        methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err",
                                "Ljava/io/PrintStream;");
                        methodVisitor.visitLdcInsn(
                                "Activation failed: Team class '" + aTeam + "' has no default constuctor!");
                        methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println",
                                "(Ljava/lang/String;)V", false);
                        methodVisitor.visitTryCatchBlock(start, end, ctorHandler,
                                "java/lang/NoSuchMethodError");

                        methodVisitor.visitLabel(after);
                    }
                }

                @Override
                public void visitMaxs(int maxStack, int maxLocals) {
                    super.visitMaxs(Math.max(maxStack, 3), maxLocals);
                }
            };
        }
        return null;
    }
}

From source file:org.eclipse.objectteams.otredyn.bytecode.asm.CreateAddRemoveRoleMethod.java

License:Open Source License

@Override
protected boolean transform() {
    // void _OT$addRemoveRole(Object role, boolean isAdding) {
    MethodNode method = getMethod(ConstantMembers.addOrRemoveRole);
    final int ROLE_SLOT = 1, IS_ADDING_SLOT = 2;
    Label start = new Label(), end = new Label();
    method.instructions.clear();//from  www  .ja  v  a 2s.c  o m
    method.visitLabel(start);

    // set = <initialized _OT$roleSet;>
    final int SET_SLOT = 3;
    method.visitLocalVariable("set", "Ljava/util/Set;", null, start, end, SET_SLOT);
    genGetInitializedRoleSet(method.instructions, SET_SLOT);

    // if (isAdding) {
    method.instructions.add(new IntInsnNode(Opcodes.ILOAD, IS_ADDING_SLOT));
    LabelNode jumpToRemove = new LabelNode();
    method.instructions.add(new JumpInsnNode(Opcodes.IFEQ, jumpToRemove));

    // set.add(role);
    method.instructions.add(new IntInsnNode(Opcodes.ALOAD, SET_SLOT));
    method.instructions.add(new IntInsnNode(Opcodes.ALOAD, ROLE_SLOT));
    method.instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, ClassNames.HASH_SET_SLASH, "add",
            "(Ljava/lang/Object;)Z", false));
    method.instructions.add(new InsnNode(Opcodes.POP));

    LabelNode jumpToEnd = new LabelNode();
    method.instructions.add(new JumpInsnNode(Opcodes.GOTO, jumpToEnd));
    // } else {
    method.instructions.add(jumpToRemove);
    // set.remove(role);
    method.instructions.add(new IntInsnNode(Opcodes.ALOAD, SET_SLOT));
    method.instructions.add(new IntInsnNode(Opcodes.ALOAD, ROLE_SLOT));
    method.instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, ClassNames.HASH_SET_SLASH, "remove",
            "(Ljava/lang/Object;)Z", false));
    method.instructions.add(new InsnNode(Opcodes.POP));

    method.instructions.add(jumpToEnd);
    // }

    method.instructions.add(new InsnNode(Opcodes.RETURN));
    method.visitLabel(end);
    // }
    // maxs are computed, maxStack from flow, maxLocals from localVariable-slots
    return true;
}

From source file:org.eclipse.objectteams.otredyn.bytecode.asm.CreateSwitchForCallAllBindingsNode.java

License:Open Source License

@Override
protected void addInstructionForDefaultLabel(MethodNode method) {
    gotoLabel = new LabelNode();
    method.instructions.add(new JumpInsnNode(Opcodes.GOTO, gotoLabel));
}