Examples of org.objectweb.asm.MethodVisitor

org.objectweb.asm.MethodVisitor
A visitor to visit a Java method. The methods of this interface must be called in the following order: [ visitAnnotationDefault ] ( visitAnnotation | visitParameterAnnotation | visitAttribute )* [ visitCode ( visitXInsn | visitLabel | visitTryCatchBlock | visitLocalVariable | visitLineNumber)* visitMaxs ] visitEnd. In addition, the visitXInsn and visitLabel methods must be called in the sequential order of the bytecode instructions of the visited code, and the visitLocalVariable and visitLineNumber methods must be called after the labels passed as arguments have been visited. @author Eric Bruneton

                Class[] descriptor = new Class[] {arg1, arg2, arg3};
                if (c == null) {
                    Class[] signature = new Class[] { RubyKernel.IRUBY_OBJECT, arg1, arg2, arg3 };
                    Class ret = getReturnClass(method, signature);
                    ClassWriter cw = createCtorFast(mnamePath);
                    MethodVisitor mv = startCallSFast(cw);
                    
                    loadArguments(mv, METHOD_ARGS_INDEX, 3, descriptor);


                    mv.visitMethodInsn(INVOKESTATIC, typePath, method, sig(ret, signature));
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(5, 3);
                    c = endCall(cw, mv, mname);
                }
                FastInvocationCallback ic = (FastInvocationCallback) c.newInstance();
                ic.setArity(Arity.fixed(3));
                ic.setArgumentTypes(descriptor);

View Full Code Here

            try {
                if (c == null) {
                    Class[] signature = new Class[] { IRubyObject[].class };
                    Class ret = getReturnClass(method, signature);
                    ClassWriter cw = createCtorFast(mnamePath);
                    MethodVisitor mv = startCallFast(cw);
                    
                    mv.visitVarInsn(ALOAD, METHOD_ARGS_INDEX);
                    checkCast(mv, IRubyObject[].class);
                    mv.visitMethodInsn(INVOKEVIRTUAL, typePath, method, sig(ret, signature));
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(2, 3);
                    c = endCall(cw, mv, mname);
                }
                FastInvocationCallback ic = (FastInvocationCallback) c.newInstance();
                ic.setArity(Arity.optional());
                ic.setArgumentTypes(InvocationCallback.OPTIONAL_ARGS);

View Full Code Here

            try {
                if (c == null) {
                    Class[] signature = new Class[] { RubyKernel.IRUBY_OBJECT, IRubyObject[].class };
                    Class ret = getReturnClass(method, signature);
                    ClassWriter cw = createCtorFast(mnamePath);
                    MethodVisitor mv = startCallSFast(cw);
                    
                    mv.visitVarInsn(ALOAD, METHOD_ARGS_INDEX);
                    checkCast(mv, IRubyObject[].class);
                    mv.visitMethodInsn(INVOKESTATIC, typePath, method, sig(ret, signature));
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(2, 3);
                    c = endCall(cw, mv, mname);
                }
                FastInvocationCallback ic = (FastInvocationCallback) c.newInstance();
                ic.setArity(Arity.optional());
                ic.setArgumentTypes(InvocationCallback.OPTIONAL_ARGS);

View Full Code Here

    }
    
    @Override
    public MethodVisitor visitMethod(int access, String name, String desc,
            String signature, String[] exceptions) {
        return new MethodVisitor(Opcodes.ASM4) {};
    }

View Full Code Here

        int freeRoom = 1;
        for (int t = 0; t < types.length; t++) {
            freeRoom = freeRoom + types[t].getSize();
        }


        MethodVisitor mv = cw.visitMethod(modifiers, methodName, desc, null,
                exceptions);
        mv.visitCode();


        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, className, DEPENDENCY, DEPENDENCY_DESC);  // The temporal dependency is on the stack.
        mv.visitMethodInsn(INVOKEVIRTUAL, TEMPORAL_DEPENDENCY, "getService", // Call getService
                "()Ljava/lang/Object;"); // The service object is on the stack.
        int varSvc = freeRoom; 
        freeRoom = freeRoom + 1; // Object Reference.
        mv.visitVarInsn(ASTORE, varSvc); // Store the service object.
                
        // Invoke the method on the service object.
        mv.visitVarInsn(ALOAD, varSvc);
        // Push argument on the stack.
        int i = 1; // Arguments. (non static method)
        for (int t = 0; t < types.length; t++) {
            mv.visitVarInsn(types[t].getOpcode(ILOAD), i); 
            i = i + types[t].getSize();
        }
        // Invocation
        mv.visitMethodInsn(INVOKEINTERFACE, itfName, methodName, desc);


        // Return the result
        Type returnType = Type.getReturnType(desc);
        if (returnType.getSort() != Type.VOID) {
            mv.visitInsn(returnType.getOpcode(IRETURN));
        } else {
            mv.visitInsn(RETURN);
        }


        // End of the method.
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

View Full Code Here

     * and set the {@link ProxyGenerator#DEPENDENCY} field.
     * @param cw the class writer
     * @param className the generated class name.
     */
    private static void generateConstructor(ClassWriter cw, String className) {
        MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", '(' + DEPENDENCY_DESC + ")V", null, null);
        mv.visitCode();


        mv.visitVarInsn(ALOAD, 0); // Load this
        mv.visitInsn(DUP); // Dup
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); // Call  super
        mv.visitVarInsn(ALOAD, 1); // Load the argument
        mv.visitFieldInsn(PUTFIELD, className, DEPENDENCY, DEPENDENCY_DESC); // Assign the dependency field
        mv.visitInsn(RETURN); // Return void


        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

View Full Code Here

    }


    private static void createMethod(final ClassWriter cw, final String className, final String referenceName, final String fieldName, final String typeName, final boolean bind) {
        final org.objectweb.asm.Type type = org.objectweb.asm.Type.getType("L" + typeName.replace('.', '/') + ";");
        final String methodName = (bind ? "" : "un") + "bind" + referenceName.substring(0, 1).toUpperCase() + referenceName.substring(1);
        final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PROTECTED, methodName, "(" + type.toString() + ")V", null, null);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        if ( bind ) {
            mv.visitVarInsn(type.getOpcode(Opcodes.ILOAD), 1);
            mv.visitFieldInsn(Opcodes.PUTFIELD, className.replace('.', '/'), fieldName, type.toString());
        } else {
            mv.visitFieldInsn(Opcodes.GETFIELD, className.replace('.', '/'), fieldName, type.toString());
            mv.visitVarInsn(Opcodes.ALOAD, 1);
            final Label jmpLabel = new Label();
            mv.visitJumpInsn(Opcodes.IF_ACMPNE, jmpLabel);
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitInsn(Opcodes.ACONST_NULL);
            mv.visitFieldInsn(Opcodes.PUTFIELD, className.replace('.', '/'), fieldName, type.toString());
            mv.visitLabel(jmpLabel);
        }
        mv.visitInsn(Opcodes.RETURN);
        mv.visitMaxs(2, 2);
    }

View Full Code Here

    return data;
  }


  private static void create_tuple_copy(int i, ClassVisitor cw,
      String this_class_name, String super_class_name) {
    MethodVisitor mv;
    make_blank_bridge(cw, this_class_name, super_class_name);


    mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "blank", "()L"
        + this_class_name + ";", null, null);
    mv.visitCode();
    mv.visitTypeInsn(Opcodes.NEW, this_class_name);
    mv.visitInsn(Opcodes.DUP);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, this_class_name, "<init>",
        "()V");


    mv.visitInsn(Opcodes.ARETURN);


    mv.visitMaxs(3, 3);
    mv.visitEnd();
  }

View Full Code Here

    mv.visitEnd();
  }


  private static void create_tuple_make(int i, ClassVisitor cw,
      String this_class_name, String super_class_name) {
    MethodVisitor mv;


    mv = cw.visitMethod(Opcodes.ACC_PUBLIC|Opcodes.ACC_STATIC, "create", "()L"
        + this_class_name + ";", null, null);
    mv.visitCode();
    mv.visitTypeInsn(Opcodes.NEW, this_class_name);
    mv.visitInsn(Opcodes.DUP);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, this_class_name, "<init>",
        "()V");


    mv.visitInsn(Opcodes.ARETURN);


    mv.visitMaxs(3, 3);
    mv.visitEnd();
  }

View Full Code Here

    mv.visitEnd();
  }


  private static void create_tuple_make2(int arity, ClassVisitor cw,
      String this_class_name, String super_class_name) {
    MethodVisitor mv;


    StringBuffer sb = new StringBuffer("(");
    for (int i = 0; i<arity; i++) sb.append(EOBJECT_DESC);
    sb.append(")L");
    sb.append(this_class_name);
    sb.append(";");
    
    mv = cw.visitMethod(Opcodes.ACC_PUBLIC|Opcodes.ACC_STATIC, "make_tuple", sb.toString(), null, null);


    mv.visitCode();
    mv.visitTypeInsn(Opcodes.NEW, this_class_name);
    mv.visitInsn(Opcodes.DUP);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, this_class_name, "<init>",
        "()V");


    for (int i = 0; i < arity; i++) {
      mv.visitInsn(Opcodes.DUP);
      mv.visitVarInsn(Opcodes.ALOAD, i);
      mv.visitFieldInsn(Opcodes.PUTFIELD, this_class_name, "elem"+(i+1), EOBJECT_DESC);
    }
    
    mv.visitInsn(Opcodes.ARETURN);


    mv.visitMaxs(3, arity);
    mv.visitEnd();
  }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.objectweb.asm.MethodVisitor

cn.wensiqun.asmsupport.operators.relational.AbstractNullCompareRelational

co.paralleluniverse.data.record.DynamicGeneratedRecord

co.paralleluniverse.fibers.instrument.InstrumentClass

cofh.asm.ASMCore

com.artemis.weaver.AccessorGenerator

com.artemis.weaver.packed.PackedStubs

com.esotericsoftware.reflectasm.ConstructorAccess

com.esotericsoftware.reflectasm.FieldAccess

com.esotericsoftware.reflectasm.MethodAccess

com.facebook.presto.byteCode.MethodDefinition

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.