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

org.mvel2.asm.MethodVisitor.visitFieldInsn()
Visits a field instruction. A field instruction is an instruction that loads or stores the value of a field of an object. @param opcode the opcode of the type instruction to be visited. This opcode is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD. @param owner the internal name of the field's owner class (see {@link Type#getInternalName() getInternalName}). @param name the field's name. @param desc the field's descriptor (see {@link Type Type}).

        for ( FieldDefinition field : core.getFieldsDefinitions() ) {
            invokeContainsKey( mv, field.getName() );
        }


        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
        mv.visitVarInsn( ALOAD, 1 );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "containsKey", "(" + Type.getDescriptor( Object.class ) + ")Z" );
        mv.visitInsn( IRETURN );
//        mv.visitMaxs( 2, 2 );
        mv.visitMaxs( 0, 0 );

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        String internalWrapper = BuildUtils.getInternalType( wrapperName );


        MethodVisitor mv = cw.visitMethod( ACC_PUBLIC, "size", "()I", null, null );
        mv.visitCode();
        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "size", "()I" );


        int n = core.getFieldsDefinitions().size();
        for ( int j = 0; j < n; j++ ) {
            mv.visitInsn( ICONST_1 );

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        MethodVisitor mv = cw.visitMethod( ACC_PUBLIC, "isEmpty", "()Z", null, null );
        mv.visitCode();


        if ( ! hasHardFields ) {
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "isEmpty", "()Z" );
        } else {
            mv.visitInsn( ICONST_0 );
        }
        mv.visitInsn( IRETURN );

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                invokeGet( mv, wrapperName, core, field.getName(), field );
            }
        }


        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
        mv.visitVarInsn( ALOAD, 1 );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "get", "(" + Type.getDescriptor( Object.class ) + ")" + Type.getDescriptor( Object.class ) );
        mv.visitInsn( ARETURN );
//        mv.visitMaxs( 2, 2 );
        mv.visitMaxs( 0, 0 );

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            }
        }




        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
        mv.visitVarInsn( ALOAD, 1 );
        mv.visitVarInsn( ALOAD, 2 );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "put", 
                            "(" + Type.getDescriptor( Object.class ) + Type.getDescriptor( Object.class ) + ")" + Type.getDescriptor( Object.class ) );
        mv.visitInsn( ARETURN );

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            mv.visitInsn( POP );
        }


        mv.visitVarInsn( ALOAD, 1 );
        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "entrySet", "()" + Type.getDescriptor( Set.class ) );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Set.class ), "addAll", "(" + Type.getDescriptor( Collection.class )+ ")Z" );
        mv.visitInsn( POP );


        mv.visitVarInsn( ALOAD, 1 );

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            mv.visitInsn( POP );
        }


        mv.visitVarInsn( ALOAD, 1 );
        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "keySet", "()" + Type.getDescriptor( Set.class ) );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Set.class ), "addAll", "(" + Type.getDescriptor( Collection.class ) + ")Z" );
        mv.visitInsn( POP );
        mv.visitVarInsn( ALOAD, 1 );
        mv.visitInsn( ARETURN );

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            mv.visitInsn( POP );
        }


        mv.visitVarInsn( ALOAD, 1 );
        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "values", "()" + Type.getDescriptor( Collection.class ) );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Collection.class ), "addAll", "(" + Type.getDescriptor( Collection.class ) + ")Z" );
        mv.visitInsn( POP );
        mv.visitVarInsn( ALOAD, 1 );
        mv.visitInsn( ARETURN );

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        if ( coreKlazz == null || needsMethod( coreKlazz, "_setBottomTypeCode" ) ) {
            {
                mv = cw.visitMethod( ACC_PUBLIC, "_setBottomTypeCode", "(" + Type.getDescriptor( BitSet.class )+ ")V", null, null );
                mv.visitCode();
                mv.visitVarInsn( ALOAD, 0 );
                mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( wrapperName ), TraitableBean.TRAITSET_FIELD_NAME , Type.getDescriptor( Map.class ) );
                mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitTypeMap.class ) );
                mv.visitVarInsn( ALOAD, 1 );
                mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( TraitTypeMap.class ), "setBottomCode", "(" + Type.getDescriptor( BitSet.class ) + ")V");
                mv.visitInsn( RETURN );
                mv.visitMaxs( 0,0 );

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            {
                mv = cw.visitMethod( ACC_PUBLIC, "getCurrentTypeCode", "()" + Type.getDescriptor( BitSet.class ), null, null );
                mv.visitCode();


                mv.visitVarInsn( ALOAD, 0 );
                mv.visitFieldInsn( GETFIELD,
                                   BuildUtils.getInternalType( wrapperName ),
                                   TraitableBean.TRAITSET_FIELD_NAME,
                                   Type.getDescriptor( Map.class ) );
                Label l3 = new Label();
                mv.visitJumpInsn( IFNONNULL, l3 );

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