Examples of org.springframework.asm.MethodVisitor.visitMethodInsn()

Class org.springframework.asm.MethodVisitor

Examples of org.springframework.asm.MethodVisitor.visitMethodInsn()

org.springframework.asm.MethodVisitor.visitMethodInsn()
Visits a method instruction. A method instruction is an instruction that invokes a method. @param opcode the opcode of the type instruction to be visited. This opcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE. @param owner the internal name of the method's owner class (see {@link Type#getInternalName() getInternalName}). @param name the method's name. @param desc the method's descriptor (see {@link Type Type}).


    // Create default constructor
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, "org/springframework/expression/spel/CompiledExpression",
        "<init>", "()V", false);
    mv.visitInsn(RETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();

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    // plus original method signature
    mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, NEW_INSTANCE, NEW_INSTANCE_DESC, null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, className, NEW_INSTANCE, customTypeNoArgDesc);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();


    // end class generation

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    mv = cw.visitMethod(ACC_PUBLIC, INIT, voidNoArgMethodDescriptor, null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETSTATIC, className, CLASS_FIELD_NAME, CLASS_DESCRIPTOR);
    mv.visitFieldInsn(GETSTATIC, className, ID_FIELD_NAME, Type.INT_TYPE.getDescriptor());
    mv.visitMethodInsn(INVOKESPECIAL, className, INIT, voidArgClassAndIntDescriptor);
    mv.visitInsn(RETURN);
    mv.visitMaxs(3, 1);
    mv.visitEnd();


    // two-arg constructor

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    mv = cw.visitMethod(ACC_PUBLIC, INIT, voidArgClassAndIntDescriptor, null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitVarInsn(ILOAD, 2);
    mv.visitMethodInsn(INVOKESPECIAL, INSTANTIATOR_NAME, INIT, voidArgClassAndIntDescriptor);
    mv.visitInsn(RETURN);
    mv.visitMaxs(3, 3);
    mv.visitEnd();


    Type customClassType = Type.getType(clazz);

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    mv = cw.visitMethod(ACC_PUBLIC, NEW_INSTANCE, customTypeNoArgDesc, null, null);


    mv.visitCode();
    mv.visitTypeInsn(NEW, customClassType.getInternalName());
    mv.visitInsn(DUP);
    mv.visitMethodInsn(INVOKESPECIAL, customClassType.getInternalName(), INIT, voidNoArgMethodDescriptor);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(2, 1);
    mv.visitEnd();


    // plus original method signature

View Full Code Here

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