Antlr4 calulate Example in golang Install antlr4 Install antlr4 Install antlr4 golang runtime go get github.com/antlr/antlr4/runtime/Go/antlr before run download and install java put antlr-4.7-complete.jar to D:\antlr\antlr-4.7-complete.jar cmd antlr.bat go get github.com/antlr/antlr4/runtime/Go/antlr cmd cd visitor go run main.go reference antlr4-golang