Examples of org.mvel2.asm.MethodVisitor.visitTypeInsn()

org.mvel2.asm.MethodVisitor.visitTypeInsn()
Visits a type instruction. A type instruction is an instruction that takes the internal name of a class as parameter. @param opcode the opcode of the type instruction to be visited. This opcode is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF. @param type the operand of the instruction to be visited. This operand must be the internal name of an object or array class (see {@link Type#getInternalName() getInternalName}).

            mv.visitVarInsn( ALOAD, 0 );
            mv.visitMethodInsn( INVOKESTATIC,
                    "java/lang/Enum",
                    "valueOf",
                    "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/Enum;" );
            mv.visitTypeInsn( CHECKCAST,
                    BuildUtils.getInternalType( classDef.getClassName() ) );
            mv.visitInsn( ARETURN );
            mv.visitMaxs( 2, 1 );
            mv.visitEnd();
        }

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                    "[" + BuildUtils.getTypeDescriptor( classDef.getClassName() ) );
            mv.visitMethodInsn( INVOKEVIRTUAL,
                    "[" + BuildUtils.getTypeDescriptor( classDef.getClassName() ),
                    "clone",
                    "()Ljava/lang/Object;" );
            mv.visitTypeInsn( CHECKCAST,
                    "[" + BuildUtils.getTypeDescriptor( classDef.getClassName() ) );
            mv.visitInsn( ARETURN );
            mv.visitMaxs( 1, 0 );
            mv.visitEnd();
        }

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                                           "entrySet", 
                                           "()" + Type.getDescriptor( Set.class ),
                                           "()Ljava/util/Set<Ljava/util/Map$Entry<Ljava/lang/String;Ljava/lang/Object;>;>;", 
                                           null );
        mv.visitCode();
        mv.visitTypeInsn( NEW, Type.getInternalName( HashSet.class ) );
        mv.visitInsn( DUP );
        mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( HashSet.class ), "<init>", "()V" );
        mv.visitVarInsn( ASTORE, 1 );


        for ( FieldDefinition field : core.getFieldsDefinitions() ) {

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                                           "keySet", 
                                           "()" + Type.getDescriptor( Set.class ), 
                                           "()Ljava/util/Set<Ljava/lang/String;>;", 
                                           null);
        mv.visitCode();
        mv.visitTypeInsn( NEW, Type.getInternalName( HashSet.class ) );
        mv.visitInsn( DUP );
        mv.visitMethodInsn( INVOKESPECIAL,
                            Type.getInternalName( HashSet.class ),
                            "<init>", 
                             "()V" );

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                                           "()" + Type.getDescriptor( Collection.class ), 
                                           "()Ljava/util/Collection<Ljava/lang/Object;>;", 
                                           null );
        mv.visitCode();


        mv.visitTypeInsn( NEW, Type.getInternalName( ArrayList.class ) );
        mv.visitInsn( DUP );
        mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( ArrayList.class ), "<init>", "()V" );
        mv.visitVarInsn( ASTORE, 1 );

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        MethodVisitor mv;


        {
            mv = cw.visitMethod( ACC_PUBLIC, "toString", "()" + Type.getDescriptor( String.class ), null, null );
            mv.visitCode();
            mv.visitTypeInsn( NEW, Type.getInternalName( StringBuilder.class ) );
            mv.visitInsn( DUP );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( StringBuilder.class ), "<init>", "()V" );
            mv.visitLdcInsn("[[");
            mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( StringBuilder.class ), "append",
                                "(" + Type.getDescriptor( String.class ) +")" + Type.getDescriptor( StringBuilder.class ) );

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                                "(" + Type.getDescriptor( Object.class ) + Type.getDescriptor( Object.class ) + ")" + Type.getDescriptor( Object.class ), 
                                null, null);
            mv.visitCode();
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitTypeInsn( CHECKCAST, Type.getInternalName( String.class ) );
            mv.visitVarInsn( ALOAD, 2 );
            mv.visitMethodInsn( INVOKEVIRTUAL, BuildUtils.getInternalType( wrapper ), "put", 
                                "(" + Type.getDescriptor( String.class ) + Type.getDescriptor( Object.class ) + ")" + Type.getDescriptor( Object.class ) );
            mv.visitInsn( ARETURN);
//            mv.visitMaxs( 3, 3 );

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        {
            mv = cw.visitMethod(ACC_PUBLIC, "setObject", "(" + Type.getDescriptor( Object.class ) + ")V", null, null );
            mv.visitCode();
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitTypeInsn( CHECKCAST, BuildUtils.getInternalType( core.getName() ) );
            mv.visitFieldInsn( PUTFIELD, BuildUtils.getInternalType( wrapper ), "object", BuildUtils.getTypeDescriptor( core.getName() ) );
            mv.visitInsn( RETURN );
//            mv.visitMaxs( 2, 2 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();

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    protected void buildCommonMethods( ClassWriter cw, String proxy ) {
        MethodVisitor mv;
        {
            mv = cw.visitMethod( ACC_PUBLIC, "toString", "()" + Type.getDescriptor( String.class ), null, null );
            mv.visitCode();
            mv.visitTypeInsn( NEW, Type.getInternalName( StringBuilder.class ) );
            mv.visitInsn( DUP );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( StringBuilder.class ), "<init>", "()V" );
            mv.visitLdcInsn( "(@" + proxy + ") : " );
            mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( StringBuilder.class ), "append", "(" + Type.getDescriptor( String.class ) + ")" + Type.getDescriptor( StringBuilder.class ) );
            mv.visitVarInsn( ALOAD, 0 );

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                l0 = new Label();
                mv.visitLabel( l0 );
            }


            // StringBuilder buf = new StringBuilder();
            mv.visitTypeInsn( Opcodes.NEW,
                              Type.getInternalName( StringBuilder.class ) );
            mv.visitInsn( Opcodes.DUP );
            mv.visitMethodInsn( Opcodes.INVOKESPECIAL,
                                Type.getInternalName( StringBuilder.class ),
                                "<init>",

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