fix literal bug

Signed-off-by: xiehuc <xiehuc@gmail.com>
fix parse pass case problem

Signed-off-by: xiehuc <xiehuc@gmail.com>
remove test and update readme file

Signed-off-by: xiehuc <xiehuc@gmail.com>
mask basic implemented

Signed-off-by: xiehuc <xiehuc@gmail.com>
final stage

Signed-off-by: xiehuc <xiehuc@gmail.com>